Compatibility matrix

The libraries have different qualification scopes. lib-ublk’s table records its core null/RAM device stages. go-ublk’s rows below record its broader conformance suite, with skips and faults preserved.

lib-ublk device stages#

Device-stage results recorded 2026-10-10. Validation evidence and scope.

Kernel family	Kernel	M0/M1a device stages
Ubuntu	6.8	pass
Debian	6.12	pass
Ubuntu	7.0	pass
Mainline	7.2.6	pass
Fedora	7.2.9	pass
Mainline	7.3-rc3	pass

These stages cover M0 and M1a, including RAM with 1/2/4/8 queues. The full core runbook passed 33/33 stages on Ubuntu 6.8 and Debian 6.12. Every language binding passed its RAM data-integrity stages on Linux 6.12; binding coverage on the other kernels isn’t established here.

go-ublk conformance runs#

Each row is one boot of one kernel running the go-ublk test suite in a disposable virtual machine. Rows are grouped by kernel family. Expand a row for per-test results and the feature flags the kernel reported.

How to read a status:

Status	Meaning
pass	Every test that ran passed. Skips are listed in the detail.
fail	At least one test failed. The detail says which and why.
timeout	The run did not finish in its time budget, which on this project usually means a hang.
no ublk_drv	The kernel booted but has no `ublk_drv` module, so nothing could run.
boot-failed	The guest never came up. Says nothing about ublk.
fetch-failed	The kernel package could not be downloaded. Says nothing about ublk.

An oops badge means the kernel logged an oops or BUG during the run, whatever the test verdict. Kernel bugs that are known to bite ublk servers are described in Known kernel bugs, and the test layers themselves in Testing and compatibility.

The new zero-copy UBSAN evidence records reports on 7.0-7.2 and a clean observed run on 7.3-rc3. A passing suite doesn’t erase a sanitizer report; the likely counted_by ordering issue is described in the kernel bug guide.

Generated 2026-10-04T18:19:05+00:00 against go-ublk 4d9712f0f26e. 67 runs across 9 kernel families.

pass 47
fail 4
no ublk_drv 14
fetch-failed 2

mainline#

Kernel Distro Arch Boot Status Pass Fail Skip Error Date

6.0.19-060019-genericupstream 6.0 Ubuntu mainline build x86_64 initramfstcg no ublk_drv 8 1 5 0 2026-10-04T15:51:40+00:00

14 tests, no ublk_drv

Test	Result	Seconds	Detail
`probe`	skip		no /dev/ublk-control
`unit/examples_ublk-loop`	pass	0.3	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	5.0	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.4	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.0	27 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.4	37 pass, 0 fail, 0 skip
`unit/internal_uring`	fail	37.8	56 pass, 1 fail, 0 skip; failed: TestDeferTaskrunSingleIssuer core_test.go:117: features 0x1fff core_test.go:154: last opcode 47 core_test.go:490: NewIoUring({Entries:8 CQEntries:0 Flags:12288 OptionalFlags:512}): io_uring_setup entries=8 flags=0x3000: invalid argument
`unit/root`	pass	0.3	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.2	7 pass, 0 fail, 0 skip
`integration/large-io`	skip		no /dev/ublk-control
`verify-sweep`	skip		no /dev/ublk-control
`loop-e2e`	skip		no /dev/ublk-control
`suite`	skip		no /dev/ublk-control

6.1.189-0601189-genericupstream 6.1 Ubuntu mainline build x86_64 initramfstcg no ublk_drv 9 0 5 0 2026-10-04T15:52:34+00:00

14 tests, no ublk_drv

Test	Result	Seconds	Detail
`probe`	skip		no /dev/ublk-control
`unit/examples_ublk-loop`	pass	0.4	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	5.0	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.4	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	0.9	27 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	37.2	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.5	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	skip		no /dev/ublk-control
`verify-sweep`	skip		no /dev/ublk-control
`loop-e2e`	skip		no /dev/ublk-control
`suite`	skip		no /dev/ublk-control

6.2.0-060200-genericupstream 6.2 Ubuntu mainline build x86_64 initramfstcg no ublk_drv 9 0 5 0 2026-10-04T16:03:12+00:00

14 tests, no ublk_drv

Test	Result	Seconds	Detail
`probe`	skip		no /dev/ublk-control
`unit/examples_ublk-loop`	pass	0.6	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	7.8	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.6	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.2	27 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.7	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	40.1	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.5	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.4	7 pass, 0 fail, 0 skip
`integration/large-io`	skip		no /dev/ublk-control
`verify-sweep`	skip	0.1	no /dev/ublk-control
`loop-e2e`	skip	0.1	no /dev/ublk-control
`suite`	skip		no /dev/ublk-control

6.3.0-060300-genericupstream 6.3 Ubuntu mainline build x86_64 initramfstcg no ublk_drv 9 0 5 0 2026-10-04T16:04:09+00:00

14 tests, no ublk_drv

Test	Result	Seconds	Detail
`probe`	skip		no /dev/ublk-control
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.6	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.2	27 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	37.8	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.5	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	skip		no /dev/ublk-control
`verify-sweep`	skip		no /dev/ublk-control
`loop-e2e`	skip		no /dev/ublk-control
`suite`	skip		no /dev/ublk-control

6.4.0-060400-genericupstream 6.4 Ubuntu mainline build x86_64 initramfstcg pass 50 0 25 0 2026-10-04T17:30:05+00:00

75 tests

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"none","srcversion":"784A74C9C421FA0CEFC07D1","library":"features 0x6 known=false; kernel has no GET_FEATURES (ioctl-encoded: no such device; legacy: operation not supported)"}
`unit/examples_ublk-loop`	pass	0.4	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.4	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.2	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.5	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.2	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.2	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.7	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	104.8	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	77.4	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	1.0
`io/integrity/q2-d32-bs4096`	pass	1.1
`io/integrity/q4-d128-bs512`	pass	0.9
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.2
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.1
`io/discard-large`	pass	0.1
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.2
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	1.8
`params/geometry`	pass	0.1
`fs/ext4`	pass	1.6
`fs/xfs`	pass	3.0
`lifecycle/create-close`	pass	0.2
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.3
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.3
`lifecycle/server-killed`	pass	0.3
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.3
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	skip	0.1	kernel lacks DEL_DEV_ASYNC (6.11+): device 0: ublk DEL_DEV_ASYNC dev 0: errno 524
`features/probe`	pass
`features/integrity-inline`	pass	1.0
`features/integrity-user-copy`	skip		kernel lacks USER_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)
`features/integrity-need-get-data`	skip		kernel lacks none (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)
`features/integrity-threads-per-queue`	skip		kernel lacks PER_IO_DAEMON (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)
`features/integrity-batch-io-user-copy`	skip		kernel lacks USER_COPY\|BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)
`features/zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)
`features/batch-io-zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY\|AUTO_BUF_REG\|BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)
`features/zero-copy-close-under-load`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)
`features/handler-async`	pass	0.7
`features/fua`	pass	0.0
`features/tag-find`	pass	0.1
`features/resize`	skip		kernel lacks UPDATE_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	skip		kernel lacks USER_RECOVERY\|USER_RECOVERY_REISSUE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)
`recovery/detach-handoff`	skip		kernel lacks USER_RECOVERY\|USER_RECOVERY_REISSUE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)
`recovery/queue-mode`	skip		kernel lacks USER_RECOVERY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)
`recovery/fail-io-mode`	skip		kernel lacks USER_RECOVERY\|USER_RECOVERY_FAIL_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)
`features/zoned`	skip		kernel lacks USER_COPY\|ZONED (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)
`features/integrity`	skip		kernel lacks USER_COPY\|INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)
`features/unprivileged`	skip		kernel lacks UNPRIVILEGED_DEV (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA, known=false)

6.5.11-060511-genericupstream 6.5 Ubuntu mainline build x86_64 initramfstcg pass 56 0 19 0 2026-10-04T17:31:11+00:00

75 tests, features 0xfe

Feature flags: URING_CMD_COMP_IN_TASK NEED_GET_DATA USER_RECOVERY USER_RECOVERY_REISSUE UNPRIVILEGED_DEV CMD_IOCTL_ENCODE USER_COPY

Test	Result	Seconds	Detail
`probe`	pass	0.2	{"features":"0xfe","opcode":"ioctl","srcversion":"972662443D83734F46BED1F","library":"features 0xfe known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.3	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.2	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.5	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.2	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.7	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	104.9	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	80.5	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.2
`io/integrity/q1-d64-bs512`	pass	0.9
`io/integrity/q2-d32-bs4096`	pass	1.1
`io/integrity/q4-d128-bs512`	pass	1.2
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.4
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.1
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.2
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	2.0
`params/geometry`	pass	0.1
`fs/ext4`	pass	2.0
`fs/xfs`	pass	3.4
`lifecycle/create-close`	pass	0.2
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.4
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.4
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	skip	0.1	kernel lacks DEL_DEV_ASYNC (6.11+): device 0: ublk DEL_DEV_ASYNC dev 0: errno 524
`features/probe`	pass
`features/integrity-inline`	pass	2.9
`features/integrity-user-copy`	pass	1.0
`features/integrity-need-get-data`	pass	0.8
`features/integrity-threads-per-queue`	skip		kernel lacks PER_IO_DAEMON (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY, known=true)
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY, known=true)
`features/zero-copy`	skip	1.3	kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY, known=true)
`features/batch-io-zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY\|AUTO_BUF_REG\|BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY, known=true)
`features/zero-copy-close-under-load`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY, known=true)
`features/handler-async`	pass	2.5
`features/fua`	pass	0.1
`features/tag-find`	pass	1.2
`features/resize`	skip		kernel lacks UPDATE_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY, known=true)
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY, known=true)
`features/safe-stop`	skip	0.6	kernel lacks SAFE_STOP_DEV (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	2.0
`recovery/detach-handoff`	pass	5.7
`recovery/queue-mode`	pass	6.3
`recovery/fail-io-mode`	skip		kernel lacks USER_RECOVERY_FAIL_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY, known=true)
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY, known=true)
`features/zoned`	skip		kernel lacks ZONED (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY, known=true)
`features/integrity`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY, known=true)
`features/unprivileged`	pass	0.6

6.6.158-0606158-genericupstream 6.6 Ubuntu mainline build x86_64 initramfstcg pass 57 0 18 0 2026-10-04T17:31:21+00:00

75 tests, features 0x1fe

Feature flags: URING_CMD_COMP_IN_TASK NEED_GET_DATA USER_RECOVERY USER_RECOVERY_REISSUE UNPRIVILEGED_DEV CMD_IOCTL_ENCODE USER_COPY ZONED

Test	Result	Seconds	Detail
`probe`	pass	0.2	{"features":"0x1fe","opcode":"ioctl","srcversion":"C7BE2610E44A9F0F166E36C","library":"features 0x1fe known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.4	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.1	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.2	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.2	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.8	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	106.0	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	80.4	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	0.9
`io/integrity/q2-d32-bs4096`	pass	1.1
`io/integrity/q4-d128-bs512`	pass	1.0
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.8
`io/integrity-buffered`	pass	1.2
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.1
`io/discard-large`	pass	0.1
`io/write-zeroes`	pass	0.2
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	1.7
`params/geometry`	pass	0.1
`fs/ext4`	pass	1.8
`fs/xfs`	pass	2.7
`lifecycle/create-close`	pass	0.2
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.4
`lifecycle/concurrent-create`	pass	0.1
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.6
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	skip	0.1	kernel lacks DEL_DEV_ASYNC (6.11+): device 0: ublk DEL_DEV_ASYNC dev 0: operation not supported
`features/probe`	pass
`features/integrity-inline`	pass	0.9
`features/integrity-user-copy`	pass	0.9
`features/integrity-need-get-data`	pass	0.9
`features/integrity-threads-per-queue`	skip		kernel lacks PER_IO_DAEMON (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY\|AUTO_BUF_REG\|BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy-close-under-load`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/handler-async`	pass	0.7
`features/fua`	pass	0.1
`features/tag-find`	pass	0.1
`features/resize`	skip		kernel lacks UPDATE_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	5.5
`recovery/detach-handoff`	pass	5.7
`recovery/queue-mode`	pass	6.2
`recovery/fail-io-mode`	skip		kernel lacks USER_RECOVERY_FAIL_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zoned`	pass	0.3
`features/integrity`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/unprivileged`	pass	0.1

6.7.10-060710-genericupstream 6.7 Ubuntu mainline build x86_64 initramfstcg pass 57 0 18 0 2026-10-04T17:34:14+00:00

75 tests, features 0x1fe

Feature flags: URING_CMD_COMP_IN_TASK NEED_GET_DATA USER_RECOVERY USER_RECOVERY_REISSUE UNPRIVILEGED_DEV CMD_IOCTL_ENCODE USER_COPY ZONED

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x1fe","opcode":"ioctl","srcversion":"2FD43D6041186EDD5E8CD6B","library":"features 0x1fe known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	7.6	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.4	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.7	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.4	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.8	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	106.5	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	78.5	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	1.0
`io/integrity/q2-d32-bs4096`	pass	1.1
`io/integrity/q4-d128-bs512`	pass	0.9
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.3
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.1
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	1.9
`params/geometry`	pass	0.1
`fs/ext4`	pass	1.6
`fs/xfs`	pass	2.8
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.4
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.3
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.3
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	skip	0.1	kernel lacks DEL_DEV_ASYNC (6.11+): device 0: ublk DEL_DEV_ASYNC dev 0: errno 524
`features/probe`	pass
`features/integrity-inline`	pass	2.8
`features/integrity-user-copy`	pass	1.0
`features/integrity-need-get-data`	pass	0.9
`features/integrity-threads-per-queue`	skip		kernel lacks PER_IO_DAEMON (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY\|AUTO_BUF_REG\|BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy-close-under-load`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/handler-async`	pass	5.8
`features/fua`	pass	0.1
`features/tag-find`	pass	0.1
`features/resize`	skip		kernel lacks UPDATE_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.5
`recovery/detach-handoff`	pass	0.5
`recovery/queue-mode`	pass	1.2
`recovery/fail-io-mode`	skip		kernel lacks USER_RECOVERY_FAIL_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zoned`	pass	0.2
`features/integrity`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/unprivileged`	pass	0.1

6.8.12-060812-genericupstream 6.8 Ubuntu mainline build x86_64 initramfstcg pass 57 0 18 0 2026-10-04T17:34:23+00:00

75 tests, features 0x1fe

Feature flags: URING_CMD_COMP_IN_TASK NEED_GET_DATA USER_RECOVERY USER_RECOVERY_REISSUE UNPRIVILEGED_DEV CMD_IOCTL_ENCODE USER_COPY ZONED

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x1fe","opcode":"ioctl","srcversion":"29ACB81639AE320440E6E5B","library":"features 0x1fe known=true"}
`unit/examples_ublk-loop`	pass	0.6	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	7.5	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.6	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.2	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.6	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.5	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.8	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	107.2	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	79.3	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	0.9
`io/integrity/q2-d32-bs4096`	pass	1.1
`io/integrity/q4-d128-bs512`	pass	1.0
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.3
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.0
`io/discard`	pass	0.1
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.0
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.0
`io/multi-device`	pass	1.8
`params/geometry`	pass	0.0
`fs/ext4`	pass	2.0
`fs/xfs`	pass	2.8
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.3
`lifecycle/concurrent-create`	pass	0.1
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	5.5
`lifecycle/chaos`	pass	5.1
`lifecycle/list-high-id`	pass	0.0
`lifecycle/delete-async`	skip	0.1	kernel lacks DEL_DEV_ASYNC (6.11+): device 0: ublk DEL_DEV_ASYNC dev 0: errno 524
`features/probe`	pass
`features/integrity-inline`	pass	1.0
`features/integrity-user-copy`	pass	0.9
`features/integrity-need-get-data`	pass	1.2
`features/integrity-threads-per-queue`	skip		kernel lacks PER_IO_DAEMON (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY\|AUTO_BUF_REG\|BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy-close-under-load`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/handler-async`	pass	0.7
`features/fua`	pass	0.0
`features/tag-find`	pass	0.1
`features/resize`	skip		kernel lacks UPDATE_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.5
`recovery/detach-handoff`	pass	0.4
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	skip		kernel lacks USER_RECOVERY_FAIL_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zoned`	pass	0.2
`features/integrity`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/unprivileged`	pass	0.1

6.9.12-060912-genericupstream 6.9 Ubuntu mainline build x86_64 initramfstcg pass 57 0 18 0 2026-10-04T17:35:14+00:00

75 tests, features 0x1fe

Feature flags: URING_CMD_COMP_IN_TASK NEED_GET_DATA USER_RECOVERY USER_RECOVERY_REISSUE UNPRIVILEGED_DEV CMD_IOCTL_ENCODE USER_COPY ZONED

Test	Result	Seconds	Detail
`probe`	pass	0.2	{"features":"0x1fe","opcode":"ioctl","srcversion":"A452553F9F3C92AF5057567","library":"features 0x1fe known=true"}
`unit/examples_ublk-loop`	pass	0.6	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.9	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.4	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.7	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.5	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.5	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.7	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	109.0	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	78.4	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	0.9
`io/integrity/q2-d32-bs4096`	pass	1.1
`io/integrity/q4-d128-bs512`	pass	1.2
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.2
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.0
`io/discard`	pass	0.1
`io/discard-large`	pass	0.1
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.2
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.0
`io/multi-device`	pass	2.0
`params/geometry`	pass	0.0
`fs/ext4`	pass	1.8
`fs/xfs`	pass	3.7
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.0
`lifecycle/create-start-stop-close`	pass	0.0
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.2
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.0
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	skip	0.1	kernel lacks DEL_DEV_ASYNC (6.11+): device 0: ublk DEL_DEV_ASYNC dev 0: errno 524
`features/probe`	pass
`features/integrity-inline`	pass	3.1
`features/integrity-user-copy`	pass	1.1
`features/integrity-need-get-data`	pass	3.1
`features/integrity-threads-per-queue`	skip		kernel lacks PER_IO_DAEMON (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY\|AUTO_BUF_REG\|BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy-close-under-load`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/handler-async`	pass	0.6
`features/fua`	pass	0.0
`features/tag-find`	pass	0.0
`features/resize`	skip		kernel lacks UPDATE_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.5
`recovery/detach-handoff`	pass	0.5
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	skip		kernel lacks USER_RECOVERY_FAIL_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zoned`	pass	0.3
`features/integrity`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/unprivileged`	pass	0.1

6.10.14-061014-genericupstream 6.10 Ubuntu mainline build x86_64 initramfstcg pass 58 0 17 0 2026-10-04T17:18:19+00:00

75 tests, features 0x1fe

Feature flags: URING_CMD_COMP_IN_TASK NEED_GET_DATA USER_RECOVERY USER_RECOVERY_REISSUE UNPRIVILEGED_DEV CMD_IOCTL_ENCODE USER_COPY ZONED

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x1fe","opcode":"ioctl","srcversion":"2A89CFE8B9E2B4C7F7A4211","library":"features 0x1fe known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.8	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.6	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.2	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.5	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.8	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	110.1	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	82.3	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.1
`io/integrity/q1-d64-bs512`	pass	1.1
`io/integrity/q2-d32-bs4096`	pass	1.1
`io/integrity/q4-d128-bs512`	pass	1.1
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.4
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.2
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.2
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	2.2
`params/geometry`	pass	0.1
`fs/ext4`	pass	2.1
`fs/xfs`	pass	3.5
`lifecycle/create-close`	pass	0.2
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.3
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.3
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.0
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.0
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	3.3
`features/integrity-user-copy`	pass	1.1
`features/integrity-need-get-data`	pass	0.8
`features/integrity-threads-per-queue`	skip		kernel lacks PER_IO_DAEMON (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY\|AUTO_BUF_REG\|BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy-close-under-load`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/handler-async`	pass	0.6
`features/fua`	pass	0.0
`features/tag-find`	pass	0.0
`features/resize`	skip		kernel lacks UPDATE_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.5
`recovery/detach-handoff`	pass	0.5
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	skip		kernel lacks USER_RECOVERY_FAIL_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zoned`	pass	0.3
`features/integrity`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/unprivileged`	pass	0.1

6.11.11-061111-genericupstream 6.11 Ubuntu mainline build x86_64 initramfstcg pass 58 0 17 0 2026-10-04T17:22:02+00:00

75 tests, features 0x1fe

Feature flags: URING_CMD_COMP_IN_TASK NEED_GET_DATA USER_RECOVERY USER_RECOVERY_REISSUE UNPRIVILEGED_DEV CMD_IOCTL_ENCODE USER_COPY ZONED

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x1fe","opcode":"ioctl","srcversion":"569A93F8F4B041ACF871AD1","library":"features 0x1fe known=true"}
`unit/examples_ublk-loop`	pass	0.6	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	7.1	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.6	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.4	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.5	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.5	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.9	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	109.4	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	78.5	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	0.8
`io/integrity/q2-d32-bs4096`	pass	1.0
`io/integrity/q4-d128-bs512`	pass	0.9
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.2
`io/boundaries`	pass	0.1
`io/flush`	pass	0.0
`io/no-volatile-cache`	pass	0.0
`io/discard`	pass	0.1
`io/discard-large`	pass	0.1
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.2
`io/no-discard-advertised`	pass	0.0
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.0
`io/multi-device`	pass	1.7
`params/geometry`	pass	0.0
`fs/ext4`	pass	1.4
`fs/xfs`	pass	2.6
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.0
`lifecycle/create-start-stop-close`	pass	0.0
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.2
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.4
`lifecycle/server-killed`	pass	0.1
`lifecycle/restart-after-stop`	pass	0.0
`lifecycle/chaos`	pass	5.1
`lifecycle/list-high-id`	pass	0.0
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	2.9
`features/integrity-user-copy`	pass	3.2
`features/integrity-need-get-data`	pass	1.0
`features/integrity-threads-per-queue`	skip		kernel lacks PER_IO_DAEMON (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY\|AUTO_BUF_REG\|BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy-close-under-load`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/handler-async`	pass	0.7
`features/fua`	pass	0.1
`features/tag-find`	pass	0.1
`features/resize`	skip		kernel lacks UPDATE_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.6
`recovery/detach-handoff`	pass	0.6
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	skip		kernel lacks USER_RECOVERY_FAIL_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zoned`	pass	0.4
`features/integrity`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/unprivileged`	pass	0.1

6.12.112-0612112-genericupstream 6.12 Ubuntu mainline build x86_64 initramfstcg pass 58 0 17 0 2026-10-04T17:22:16+00:00

75 tests, features 0x1fe

Feature flags: URING_CMD_COMP_IN_TASK NEED_GET_DATA USER_RECOVERY USER_RECOVERY_REISSUE UNPRIVILEGED_DEV CMD_IOCTL_ENCODE USER_COPY ZONED

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x1fe","opcode":"ioctl","srcversion":"D8595C05D9DC36E47CF764A","library":"features 0x1fe known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.6	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.4	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.7	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.6	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.5	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.8	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	108.5	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	77.6	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	0.9
`io/integrity/q1-d64-bs512`	pass	1.0
`io/integrity/q2-d32-bs4096`	pass	1.0
`io/integrity/q4-d128-bs512`	pass	0.8
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.2
`io/boundaries`	pass	0.1
`io/flush`	pass	0.0
`io/no-volatile-cache`	pass	0.0
`io/discard`	pass	0.1
`io/discard-large`	pass	0.1
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.0
`io/multi-device`	pass	1.9
`params/geometry`	pass	0.0
`fs/ext4`	pass	2.0
`fs/xfs`	pass	3.5
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.0
`lifecycle/create-start-stop-close`	pass	0.0
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.3
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.3
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.0
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.0
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	1.0
`features/integrity-user-copy`	pass	1.1
`features/integrity-need-get-data`	pass	0.9
`features/integrity-threads-per-queue`	skip		kernel lacks PER_IO_DAEMON (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY\|AUTO_BUF_REG\|BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy-close-under-load`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/handler-async`	pass	0.7
`features/fua`	pass	0.0
`features/tag-find`	pass	0.1
`features/resize`	skip		kernel lacks UPDATE_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.6
`recovery/detach-handoff`	pass	0.5
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	skip		kernel lacks USER_RECOVERY_FAIL_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zoned`	pass	0.3
`features/integrity`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/unprivileged`	pass	0.1

6.13.12-061312-genericupstream 6.13 Ubuntu mainline build x86_64 initramfstcg pass 59 0 16 0 2026-10-04T17:22:45+00:00

75 tests, features 0x3fe

Feature flags: URING_CMD_COMP_IN_TASK NEED_GET_DATA USER_RECOVERY USER_RECOVERY_REISSUE UNPRIVILEGED_DEV CMD_IOCTL_ENCODE USER_COPY ZONED USER_RECOVERY_FAIL_IO

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x3fe","opcode":"ioctl","srcversion":"BBB487E13AE905CA7000C42","library":"features 0x3fe known=true"}
`unit/examples_ublk-loop`	pass	0.6	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.6	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.6	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.3	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.4	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.5	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.9	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	116.2	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	80.5	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	1.0
`io/integrity/q2-d32-bs4096`	pass	1.1
`io/integrity/q4-d128-bs512`	pass	1.1
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.4
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.2
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.2
`io/write-zeroes-large`	pass	0.2
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	2.0
`params/geometry`	pass	0.0
`fs/ext4`	pass	2.2
`fs/xfs`	pass	3.5
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.0
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.3
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.0
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	3.3
`features/integrity-user-copy`	pass	1.2
`features/integrity-need-get-data`	pass	1.0
`features/integrity-threads-per-queue`	skip		kernel lacks PER_IO_DAEMON (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/batch-io-zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY\|AUTO_BUF_REG\|BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/zero-copy-close-under-load`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/handler-async`	pass	0.6
`features/fua`	pass	0.0
`features/tag-find`	pass	0.1
`features/resize`	skip		kernel lacks UPDATE_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.5
`recovery/detach-handoff`	pass	0.6
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/zoned`	pass	0.4
`features/integrity`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/unprivileged`	pass	0.1

6.14.11-061411-genericupstream 6.14 Ubuntu mainline build x86_64 initramfstcg pass 59 0 16 0 2026-10-04T17:22:58+00:00

75 tests, features 0x3fe

Feature flags: URING_CMD_COMP_IN_TASK NEED_GET_DATA USER_RECOVERY USER_RECOVERY_REISSUE UNPRIVILEGED_DEV CMD_IOCTL_ENCODE USER_COPY ZONED USER_RECOVERY_FAIL_IO

Test	Result	Seconds	Detail
`probe`	pass	0.2	{"features":"0x3fe","opcode":"ioctl","srcversion":"62CB2177FC04A4DB72D45F0","library":"features 0x3fe known=true"}
`unit/examples_ublk-loop`	pass	0.6	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.8	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.6	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.3	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.7	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.6	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.5	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.9	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	112.9	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	80.3	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.1
`io/integrity/q1-d64-bs512`	pass	1.2
`io/integrity/q2-d32-bs4096`	pass	1.1
`io/integrity/q4-d128-bs512`	pass	1.1
`io/integrity/q4-d16-bs4096-maxio64k`	pass	1.0
`io/integrity-buffered`	pass	1.3
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.0
`io/discard`	pass	0.1
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.2
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.0
`io/multi-device`	pass	1.8
`params/geometry`	pass	0.1
`fs/ext4`	pass	2.5
`fs/xfs`	pass	3.7
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.3
`lifecycle/concurrent-create`	pass	0.1
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	3.1
`features/integrity-user-copy`	pass	1.1
`features/integrity-need-get-data`	pass	3.0
`features/integrity-threads-per-queue`	skip		kernel lacks PER_IO_DAEMON (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/batch-io-zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY\|AUTO_BUF_REG\|BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/zero-copy-close-under-load`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/handler-async`	pass	0.6
`features/fua`	pass	0.5
`features/tag-find`	pass	0.1
`features/resize`	skip		kernel lacks UPDATE_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.6
`recovery/detach-handoff`	pass	0.5
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/zoned`	pass	0.4
`features/integrity`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/unprivileged`	pass	0.1

6.15.11-061511-genericupstream 6.15 Ubuntu mainline build x86_64 initramfstcg pass 61 0 14 0 2026-10-04T17:26:07+00:00

75 tests, features 0x3ff

Feature flags: SUPPORT_ZERO_COPY URING_CMD_COMP_IN_TASK NEED_GET_DATA USER_RECOVERY USER_RECOVERY_REISSUE UNPRIVILEGED_DEV CMD_IOCTL_ENCODE USER_COPY ZONED USER_RECOVERY_FAIL_IO

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x3ff","opcode":"ioctl","srcversion":"97151D8EB2134CD7FC3680B","library":"features 0x3ff known=true"}
`unit/examples_ublk-loop`	pass	0.6	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.5	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.6	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.4	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.7	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.6	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.5	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.9	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	108.3	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	80.2	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.1
`io/integrity/q1-d64-bs512`	pass	1.1
`io/integrity/q2-d32-bs4096`	pass	1.1
`io/integrity/q4-d128-bs512`	pass	1.1
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.2
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.0
`io/discard`	pass	0.1
`io/discard-large`	pass	0.1
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.0
`io/multi-device`	pass	1.8
`params/geometry`	pass	0.0
`fs/ext4`	pass	1.7
`fs/xfs`	pass	3.2
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.0
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.2
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.3
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.0
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	1.1
`features/integrity-user-copy`	pass	1.1
`features/integrity-need-get-data`	pass	1.0
`features/integrity-threads-per-queue`	skip		kernel lacks PER_IO_DAEMON (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/zero-copy`	pass	3.4
`features/batch-io-zero-copy`	skip		kernel lacks AUTO_BUF_REG\|BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/zero-copy-close-under-load`	pass	0.3
`features/handler-async`	pass	0.6
`features/fua`	pass	0.1
`features/tag-find`	pass	0.0
`features/resize`	skip		kernel lacks UPDATE_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.6
`recovery/detach-handoff`	pass	0.5
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/zoned`	pass	0.1
`features/integrity`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/unprivileged`	pass	0.1

6.16.12-061612-genericupstream 6.16 Ubuntu mainline build x86_64 initramfstcg pass 63 0 12 0 2026-10-04T17:26:18+00:00

75 tests, features 0x3fff

Feature flags: SUPPORT_ZERO_COPY URING_CMD_COMP_IN_TASK NEED_GET_DATA USER_RECOVERY USER_RECOVERY_REISSUE UNPRIVILEGED_DEV CMD_IOCTL_ENCODE USER_COPY ZONED USER_RECOVERY_FAIL_IO UPDATE_SIZE AUTO_BUF_REG QUIESCE PER_IO_DAEMON

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x3fff","opcode":"ioctl","srcversion":"02788F9BECC395DB27476AB","library":"features 0x3fff known=true"}
`unit/examples_ublk-loop`	pass	0.6	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.6	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.2	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.7	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.6	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.8	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	107.6	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	79.3	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	0.9
`io/integrity/q2-d32-bs4096`	pass	1.0
`io/integrity/q4-d128-bs512`	pass	1.2
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.1
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.1
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	1.9
`params/geometry`	pass	0.0
`fs/ext4`	pass	2.2
`fs/xfs`	pass	3.4
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.3
`lifecycle/concurrent-create`	pass	0.1
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	1.0
`features/integrity-user-copy`	pass	1.1
`features/integrity-need-get-data`	pass	0.9
`features/integrity-threads-per-queue`	pass	0.9
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON, known=true)
`features/zero-copy`	pass	1.3
`features/batch-io-zero-copy`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON, known=true)
`features/zero-copy-close-under-load`	pass	0.3
`features/handler-async`	pass	0.7
`features/fua`	pass	0.1
`features/tag-find`	pass	0.1
`features/resize`	pass	0.1
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.5
`recovery/detach-handoff`	pass	0.6
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON, known=true)
`features/zoned`	pass	0.3
`features/integrity`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON, known=true)
`features/unprivileged`	pass	0.1

6.17.12-061712-genericupstream 6.17 Ubuntu mainline build x86_64 initramfstcg pass 63 0 13 0 2026-10-04T17:26:54+00:00

76 tests, features 0x7fff

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x7fff","opcode":"ioctl","srcversion":"DC54D3D9DD478FDB96CA1EF","library":"features 0x7fff known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.2	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.2	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.4	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.5	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.7	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	107.9	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	79.3	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	0.9
`io/integrity/q1-d64-bs512`	pass	0.9
`io/integrity/q2-d32-bs4096`	pass	1.1
`io/integrity/q4-d128-bs512`	pass	1.2
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.2
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.2
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	2.1
`params/geometry`	pass	0.1
`fs/ext4`	pass	2.0
`fs/xfs`	pass	3.6
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.0
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.3
`lifecycle/concurrent-create`	pass	0.1
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.0
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.0
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	3.1
`features/integrity-user-copy`	pass	3.2
`features/integrity-need-get-data`	pass	2.9
`features/integrity-threads-per-queue`	pass	3.1
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zero-copy`	pass	1.2
`features/batch-io-zero-copy`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zero-copy-close-under-load`	pass	0.3
`features/handler-async`	pass	0.6
`features/fua`	pass	0.0
`features/tag-find`	pass	0.0
`features/resize`	pass	0.1
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.5
`recovery/detach-handoff`	pass	0.5
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zoned`	pass	0.3
`features/integrity`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/unprivileged`	pass	0.1
`kernel-log/io_uring-counted_by-ubsan`	skip		UBSAN report, likely a __counted_by ordering issue in io_uring io_buffer_register_bvec under ublk zero copy (site/content/guide/kernel-bugs.md#found-by-go-ublks-kernel-matrix); 2 line(s), first: [ 243.290044] UBSAN: array-index-out-of-bounds in io_uring/rsrc.c:989:12

6.18.5upstream 6.18 Ubuntu mainline build x86_64 initramfs fetch-failed 0 0 0 1 2026-10-04T18:19:05+00:00

1 test, no ublk_drv

Test	Result	Seconds	Detail
`fetch`	error		v6.18.5: amd64 build failed

6.18.55-061855-genericupstream 6.18 Ubuntu mainline build x86_64 initramfstcg pass 63 0 13 0 2026-10-04T17:27:10+00:00

76 tests, features 0x7fff

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x7fff","opcode":"ioctl","srcversion":"C233E14752DB5FF7C181894","library":"features 0x7fff known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.7	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.6	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.3	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.7	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.6	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.5	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.8	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	109.4	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	79.6	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	1.0
`io/integrity/q2-d32-bs4096`	pass	1.1
`io/integrity/q4-d128-bs512`	pass	1.0
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.3
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.2
`io/discard-large`	pass	0.1
`io/write-zeroes`	pass	0.2
`io/write-zeroes-large`	pass	0.2
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	2.0
`params/geometry`	pass	0.1
`fs/ext4`	pass	1.9
`fs/xfs`	pass	3.5
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.0
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.3
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	1.0
`features/integrity-user-copy`	pass	1.1
`features/integrity-need-get-data`	pass	1.0
`features/integrity-threads-per-queue`	pass	1.1
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zero-copy`	pass	3.3
`features/batch-io-zero-copy`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zero-copy-close-under-load`	pass	0.3
`features/handler-async`	pass	0.7
`features/fua`	pass	0.1
`features/tag-find`	pass	0.1
`features/resize`	pass	0.1
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.5
`recovery/detach-handoff`	pass	0.6
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zoned`	pass	0.3
`features/integrity`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/unprivileged`	pass	0.1
`kernel-log/io_uring-counted_by-ubsan`	skip		UBSAN report, likely a __counted_by ordering issue in io_uring io_buffer_register_bvec under ublk zero copy (site/content/guide/kernel-bugs.md#found-by-go-ublks-kernel-matrix); 2 line(s), first: [ 237.860356] UBSAN: array-index-out-of-bounds in io_uring/rsrc.c:979:12

6.19.14-061914-genericupstream 6.19 Ubuntu mainline build x86_64 initramfstcg pass 63 0 13 0 2026-10-04T17:30:16+00:00

76 tests, features 0x7fff

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x7fff","opcode":"ioctl","srcversion":"6E232E51ECF56FFF80DC7BF","library":"features 0x7fff known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.6	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.4	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.3	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.7	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	108.0	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	81.1	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	1.0
`io/integrity/q2-d32-bs4096`	pass	1.1
`io/integrity/q4-d128-bs512`	pass	1.1
`io/integrity/q4-d16-bs4096-maxio64k`	pass	1.0
`io/integrity-buffered`	pass	1.2
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.2
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.2
`io/write-zeroes-large`	pass	0.2
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	2.3
`params/geometry`	pass	0.1
`fs/ext4`	pass	2.5
`fs/xfs`	pass	3.8
`lifecycle/create-close`	pass	0.2
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.3
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.3
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.0
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.0
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	3.2
`features/integrity-user-copy`	pass	1.1
`features/integrity-need-get-data`	pass	0.9
`features/integrity-threads-per-queue`	pass	2.8
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zero-copy`	pass	1.3
`features/batch-io-zero-copy`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zero-copy-close-under-load`	pass	0.3
`features/handler-async`	pass	0.6
`features/fua`	pass	0.1
`features/tag-find`	pass	0.1
`features/resize`	pass	0.1
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.6
`recovery/detach-handoff`	pass	0.5
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zoned`	pass	0.1
`features/integrity`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/unprivileged`	pass	0.1
`kernel-log/io_uring-counted_by-ubsan`	skip		UBSAN report, likely a __counted_by ordering issue in io_uring io_buffer_register_bvec under ublk zero copy (site/content/guide/kernel-bugs.md#found-by-go-ublks-kernel-matrix); 2 line(s), first: [ 243.045688] UBSAN: array-index-out-of-bounds in io_uring/rsrc.c:992:12

7.0.14-070014-genericupstream 7.0 Ubuntu mainline build x86_64 initramfstcg pass 73 0 3 0 2026-10-04T17:35:38+00:00

76 tests, features 0x7ffff

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x7ffff","opcode":"ioctl","srcversion":"3743E3FA998B95656BDA492","library":"features 0x7ffff known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.6	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.2	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.5	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.5	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.2	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.7	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	109.2	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	80.9	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	1.0
`io/integrity/q2-d32-bs4096`	pass	1.1
`io/integrity/q4-d128-bs512`	pass	1.4
`io/integrity/q4-d16-bs4096-maxio64k`	pass	1.1
`io/integrity-buffered`	pass	1.2
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.2
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.2
`io/write-zeroes-large`	pass	0.4
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	2.2
`params/geometry`	pass	0.1
`fs/ext4`	pass	2.9
`fs/xfs`	pass	3.7
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.0
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.3
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.0
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	1.1
`features/integrity-user-copy`	pass	1.1
`features/integrity-need-get-data`	pass	1.1
`features/integrity-threads-per-queue`	pass	0.9
`features/integrity-batch-io`	pass	1.0
`features/integrity-batch-io-user-copy`	pass	1.0
`features/zero-copy`	pass	3.3
`features/batch-io-zero-copy`	pass	1.2
`features/batch-io-close-under-load`	pass	0.3
`features/zero-copy-close-under-load`	pass	0.3
`features/handler-async`	pass	0.7
`features/fua`	pass	0.0
`features/tag-find`	pass	0.0
`features/resize`	pass	0.0
`features/no-partition-scan`	pass	3.2
`features/safe-stop`	pass	0.1
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.6
`recovery/detach-handoff`	pass	0.5
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	pass	0.6
`recovery/batch-detach-handoff`	pass	0.5
`recovery/integrity-kill-and-recover`	pass	0.6
`features/zoned`	pass	0.1
`features/integrity`	pass	0.1
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON\|BATCH_IO\|INTEGRITY\|SAFE_STOP_DEV\|NO_AUTO_PART_SCAN, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON\|BATCH_IO\|INTEGRITY\|SAFE_STOP_DEV\|NO_AUTO_PART_SCAN, known=true)
`features/unprivileged`	pass	0.1
`kernel-log/io_uring-counted_by-ubsan`	skip		UBSAN report, likely a __counted_by ordering issue in io_uring io_buffer_register_bvec under ublk zero copy (site/content/guide/kernel-bugs.md#found-by-go-ublks-kernel-matrix); 2 line(s), first: [ 243.235424] UBSAN: array-index-out-of-bounds in io_uring/rsrc.c:980:12

7.1.13-070113-genericupstream 7.1 Ubuntu mainline build x86_64 initramfstcg pass 74 0 2 0 2026-10-04T17:39:54+00:00

76 tests, features 0xfffff

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0xfffff","opcode":"ioctl","srcversion":"85CFDC8551D86D54968BB07","library":"features 0xfffff known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.8	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.1	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.5	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.5	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.9	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	113.1	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	83.4	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	1.0
`io/integrity/q2-d32-bs4096`	pass	1.0
`io/integrity/q4-d128-bs512`	pass	1.0
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.3
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.0
`io/discard`	pass	0.2
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.2
`io/write-zeroes-large`	pass	0.2
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	62.5
`params/geometry`	pass	0.1
`fs/ext4`	pass	2.2
`fs/xfs`	pass	3.9
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.3
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.0
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.0
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	3.0
`features/integrity-user-copy`	pass	3.0
`features/integrity-need-get-data`	pass	2.8
`features/integrity-threads-per-queue`	pass	3.0
`features/integrity-batch-io`	pass	3.0
`features/integrity-batch-io-user-copy`	pass	3.1
`features/zero-copy`	pass	1.2
`features/batch-io-zero-copy`	pass	1.2
`features/batch-io-close-under-load`	pass	0.3
`features/zero-copy-close-under-load`	pass	0.2
`features/handler-async`	pass	0.7
`features/fua`	pass	0.1
`features/tag-find`	pass	0.0
`features/resize`	pass	0.0
`features/no-partition-scan`	pass	3.1
`features/safe-stop`	pass	0.1
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.6
`recovery/detach-handoff`	pass	0.6
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	pass	0.6
`recovery/batch-detach-handoff`	pass	0.6
`recovery/integrity-kill-and-recover`	pass	0.6
`features/zoned`	pass	0.1
`features/integrity`	pass	0.1
`features/shared-memory`	pass	0.1
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON\|BATCH_IO\|INTEGRITY\|SAFE_STOP_DEV\|NO_AUTO_PART_SCAN\|SHMEM_ZC, known=true)
`features/unprivileged`	pass	0.1
`kernel-log/io_uring-counted_by-ubsan`	skip		UBSAN report, likely a __counted_by ordering issue in io_uring io_buffer_register_bvec under ublk zero copy (site/content/guide/kernel-bugs.md#found-by-go-ublks-kernel-matrix); 2 line(s), first: [ 320.397991] UBSAN: array-index-out-of-bounds in io_uring/rsrc.c:983:12

7.2.6-070206-genericupstream 7.2 Ubuntu mainline build x86_64 initramfstcg pass 74 0 2 0 2026-10-04T17:38:49+00:00

76 tests, features 0xfffff

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0xfffff","opcode":"ioctl","srcversion":"CECD8D9B7FC8EF13E8A0C78","library":"features 0xfffff known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	7.0	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.3	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.7	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.9	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.9	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	114.6	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	83.2	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	1.0
`io/integrity/q2-d32-bs4096`	pass	1.2
`io/integrity/q4-d128-bs512`	pass	1.1
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.8
`io/integrity-buffered`	pass	1.2
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.0
`io/discard`	pass	0.1
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.2
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.0
`io/multi-device`	pass	1.7
`params/geometry`	pass	0.0
`fs/ext4`	pass	2.1
`fs/xfs`	pass	3.6
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.0
`lifecycle/create-start-stop-close`	pass	0.0
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.3
`lifecycle/concurrent-create`	pass	0.1
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.0
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.0
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	2.7
`features/integrity-user-copy`	pass	1.0
`features/integrity-need-get-data`	pass	0.9
`features/integrity-threads-per-queue`	pass	0.9
`features/integrity-batch-io`	pass	1.0
`features/integrity-batch-io-user-copy`	pass	1.0
`features/zero-copy`	pass	1.3
`features/batch-io-zero-copy`	pass	3.5
`features/batch-io-close-under-load`	pass	0.3
`features/zero-copy-close-under-load`	pass	0.2
`features/handler-async`	pass	0.7
`features/fua`	pass	0.1
`features/tag-find`	pass	0.1
`features/resize`	pass	0.1
`features/no-partition-scan`	pass	3.1
`features/safe-stop`	pass	0.1
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.6
`recovery/detach-handoff`	pass	0.6
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	pass	0.6
`recovery/batch-detach-handoff`	pass	0.5
`recovery/integrity-kill-and-recover`	pass	0.6
`features/zoned`	pass	0.2
`features/integrity`	pass	0.1
`features/shared-memory`	pass	0.1
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON\|BATCH_IO\|INTEGRITY\|SAFE_STOP_DEV\|NO_AUTO_PART_SCAN\|SHMEM_ZC, known=true)
`features/unprivileged`	pass	0.1
`kernel-log/io_uring-counted_by-ubsan`	skip		UBSAN report, likely a __counted_by ordering issue in io_uring io_buffer_register_bvec under ublk zero copy (site/content/guide/kernel-bugs.md#found-by-go-ublks-kernel-matrix); 2 line(s), first: [ 250.114962] UBSAN: array-index-out-of-bounds in io_uring/rsrc.c:1070:12

7.3.0-070300rc3-genericupstream 7.3 Ubuntu mainline build x86_64 initramfstcg pass 75 0 0 0 2026-10-04T17:39:33+00:00

75 tests, features 0x1fffff

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x1fffff","opcode":"ioctl","srcversion":"2F0A11ABA216DF5A802EA6A","library":"features 0x1fffff known=true"}
`unit/examples_ublk-loop`	pass	0.6	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	7.0	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.3	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.7	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.8	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.5	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.9	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	111.9	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	81.5	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	1.1
`io/integrity/q2-d32-bs4096`	pass	1.1
`io/integrity/q4-d128-bs512`	pass	1.3
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.2
`io/boundaries`	pass	0.1
`io/flush`	pass	0.0
`io/no-volatile-cache`	pass	0.0
`io/discard`	pass	0.2
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.2
`io/write-zeroes-large`	pass	0.2
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	2.0
`params/geometry`	pass	0.1
`fs/ext4`	pass	1.8
`fs/xfs`	pass	3.4
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.0
`lifecycle/create-start-stop-close`	pass	0.0
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.3
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.0
`lifecycle/chaos`	pass	5.3
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	1.1
`features/integrity-user-copy`	pass	1.0
`features/integrity-need-get-data`	pass	0.9
`features/integrity-threads-per-queue`	pass	1.0
`features/integrity-batch-io`	pass	1.0
`features/integrity-batch-io-user-copy`	pass	1.0
`features/zero-copy`	pass	1.2
`features/batch-io-zero-copy`	pass	3.1
`features/batch-io-close-under-load`	pass	0.2
`features/zero-copy-close-under-load`	pass	0.3
`features/handler-async`	pass	0.7
`features/fua`	pass	0.0
`features/tag-find`	pass	0.1
`features/resize`	pass	0.1
`features/no-partition-scan`	pass	3.1
`features/safe-stop`	pass	0.1
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.5
`recovery/detach-handoff`	pass	0.5
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	pass	0.5
`recovery/batch-detach-handoff`	pass	0.7
`recovery/integrity-kill-and-recover`	pass	0.7
`features/zoned`	pass	0.1
`features/integrity`	pass	0.1
`features/shared-memory`	pass	0.1
`features/io-desc-size`	pass	0.0
`features/unprivileged`	pass	0.1

amazon#

Kernel Distro Arch Boot Status Pass Fail Skip Error Date

6.1.186-228.376.amzn2023.x86_64upstream 6.1 Amazon Linux 2023 (6.1) x86_64 initramfstcg no ublk_drv 9 0 5 0 2026-10-04T15:46:05+00:00

14 tests, no ublk_drv

Test	Result	Seconds	Detail
`probe`	skip		no /dev/ublk-control
`unit/examples_ublk-loop`	pass	0.4	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	5.7	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.4	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.0	27 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.5	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	90.3	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.2	7 pass, 0 fail, 0 skip
`integration/large-io`	skip		no /dev/ublk-control
`verify-sweep`	skip		no /dev/ublk-control
`loop-e2e`	skip		no /dev/ublk-control
`suite`	skip		no /dev/ublk-control

6.12.103-129.197.amzn2023.x86_64upstream 6.12 Amazon Linux 2023 (6.12) x86_64 initramfstcg no ublk_drv 9 0 5 0 2026-10-04T15:44:37+00:00

14 tests, no ublk_drv

Test	Result	Seconds	Detail
`probe`	skip		no /dev/ublk-control
`unit/examples_ublk-loop`	pass	0.4	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	5.6	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.4	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.0	27 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.4	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	1.7	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.2	7 pass, 0 fail, 0 skip
`integration/large-io`	skip		no /dev/ublk-control
`verify-sweep`	skip		no /dev/ublk-control
`loop-e2e`	skip		no /dev/ublk-control
`suite`	skip		no /dev/ublk-control

arch#

Kernel Distro Arch Boot Status Pass Fail Skip Error Date

6.18.55-1-ltsupstream 6.18 Arch Linux LTS x86_64 initramfstcg pass 63 0 12 0 2026-10-04T17:13:40+00:00

75 tests, features 0x7fff

Test	Result	Seconds	Detail
`probe`	pass	0.2	{"features":"0x7fff","opcode":"ioctl","srcversion":"C233E14752DB5FF7C181894","library":"features 0x7fff known=true"}
`unit/examples_ublk-loop`	pass	0.3	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	5.1	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.4	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	0.8	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.4	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	1.8	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.3	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.1	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.6	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	99.4	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	76.4	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.1
`io/integrity/q1-d64-bs512`	pass	0.9
`io/integrity/q2-d32-bs4096`	pass	1.0
`io/integrity/q4-d128-bs512`	pass	0.9
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.2
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.2
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.2
`io/write-zeroes-large`	pass	0.2
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.2
`io/readonly`	pass	0.1
`io/multi-device`	pass	1.7
`params/geometry`	pass	0.1
`fs/ext4`	pass	1.5
`fs/xfs`	pass	22.7
`lifecycle/create-close`	pass	0.2
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.7
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.3
`lifecycle/server-killed`	pass	0.3
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.3
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	3.1
`features/integrity-user-copy`	pass	1.0
`features/integrity-need-get-data`	pass	1.0
`features/integrity-threads-per-queue`	pass	1.0
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zero-copy`	pass	1.2
`features/batch-io-zero-copy`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zero-copy-close-under-load`	pass	0.3
`features/handler-async`	pass	0.7
`features/fua`	pass	0.2
`features/tag-find`	pass	0.1
`features/resize`	pass	0.1
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.3
`recovery/kill-and-recover`	pass	0.6
`recovery/detach-handoff`	pass	0.6
`recovery/queue-mode`	pass	1.2
`recovery/fail-io-mode`	pass	0.2
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zoned`	pass	0.3
`features/integrity`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/unprivileged`	pass	0.2

7.2.8-arch1-2upstream 7.2 Arch Linux x86_64 initramfstcg pass 74 0 1 0 2026-10-04T17:13:56+00:00

75 tests, features 0xfffff

Test	Result	Seconds	Detail
`probe`	pass	0.2	{"features":"0xfffff","opcode":"ioctl","srcversion":"465AF2E302619F74AAD76FE","library":"features 0xfffff known=true"}
`unit/examples_ublk-loop`	pass	0.4	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	5.3	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.4	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	0.9	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.5	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.0	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.3	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.2	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.5	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	101.6	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	78.9	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.1
`io/integrity/q1-d64-bs512`	pass	0.9
`io/integrity/q2-d32-bs4096`	pass	1.0
`io/integrity/q4-d128-bs512`	pass	0.9
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	18.1
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.2
`io/discard-large`	pass	0.1
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	1.6
`params/geometry`	pass	0.1
`fs/ext4`	pass	2.2
`fs/xfs`	pass	4.5
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.4
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.3
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	3.5
`features/integrity-user-copy`	pass	3.5
`features/integrity-need-get-data`	pass	1.0
`features/integrity-threads-per-queue`	pass	1.0
`features/integrity-batch-io`	pass	0.9
`features/integrity-batch-io-user-copy`	pass	0.9
`features/zero-copy`	pass	3.4
`features/batch-io-zero-copy`	pass	1.1
`features/batch-io-close-under-load`	pass	0.3
`features/zero-copy-close-under-load`	pass	0.3
`features/handler-async`	pass	0.7
`features/fua`	pass	0.1
`features/tag-find`	pass	0.1
`features/resize`	pass	0.1
`features/no-partition-scan`	pass	3.2
`features/safe-stop`	pass	0.1
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.6
`recovery/detach-handoff`	pass	0.6
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	pass	0.6
`recovery/batch-detach-handoff`	pass	0.5
`recovery/integrity-kill-and-recover`	pass	0.6
`features/zoned`	pass	0.2
`features/integrity`	pass	0.1
`features/shared-memory`	pass	0.1
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON\|BATCH_IO\|INTEGRITY\|SAFE_STOP_DEV\|NO_AUTO_PART_SCAN\|SHMEM_ZC, known=true)
`features/unprivileged`	pass	0.1

debian#

Kernel Distro Arch Boot Status Pass Fail Skip Error Date

6.1.0-53-amd64upstream 6.1 Debian 12 x86_64 initramfstcg no ublk_drv 9 0 5 0 2026-10-04T15:47:14+00:00

14 tests, no ublk_drv

Test	Result	Seconds	Detail
`probe`	skip		no /dev/ublk-control
`unit/examples_ublk-loop`	pass	0.4	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	5.0	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.4	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	0.8	27 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	35.4	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.3	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.2	7 pass, 0 fail, 0 skip
`integration/large-io`	skip		no /dev/ublk-control
`verify-sweep`	skip		no /dev/ublk-control
`loop-e2e`	skip		no /dev/ublk-control
`suite`	skip		no /dev/ublk-control

6.12.95+deb12-amd64upstream 6.12 Debian 12 backports x86_64 initramfstcg pass 58 0 17 0 2026-10-04T17:14:07+00:00

75 tests, features 0x1fe

Feature flags: URING_CMD_COMP_IN_TASK NEED_GET_DATA USER_RECOVERY USER_RECOVERY_REISSUE UNPRIVILEGED_DEV CMD_IOCTL_ENCODE USER_COPY ZONED

Test	Result	Seconds	Detail
`probe`	pass	0.2	{"features":"0x1fe","opcode":"ioctl","library":"features 0x1fe known=true"}
`unit/examples_ublk-loop`	pass	0.4	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	5.7	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.4	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.0	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.5	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	1.9	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.3	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.2	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.8	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	102.4	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	73.9	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	1.0
`io/integrity/q2-d32-bs4096`	pass	1.0
`io/integrity/q4-d128-bs512`	pass	1.0
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.1
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.2
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.2
`io/write-zeroes-large`	pass	0.2
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.2
`io/readonly`	pass	0.1
`io/multi-device`	pass	1.6
`params/geometry`	pass	0.1
`fs/ext4`	pass	1.9
`fs/xfs`	pass	2.8
`lifecycle/create-close`	pass	0.2
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.7
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.3
`lifecycle/server-killed`	pass	0.3
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	1.0
`features/integrity-user-copy`	pass	1.0
`features/integrity-need-get-data`	pass	1.0
`features/integrity-threads-per-queue`	skip		kernel lacks PER_IO_DAEMON (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY\|AUTO_BUF_REG\|BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy-close-under-load`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/handler-async`	pass	0.8
`features/fua`	pass	0.1
`features/tag-find`	pass	0.1
`features/resize`	skip		kernel lacks UPDATE_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.6
`recovery/detach-handoff`	pass	0.6
`recovery/queue-mode`	pass	1.2
`recovery/fail-io-mode`	skip		kernel lacks USER_RECOVERY_FAIL_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zoned`	pass	0.4
`features/integrity`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/unprivileged`	pass	0.2

6.12.111+deb13-amd64upstream 6.12 Debian 13 x86_64 initramfstcg pass 58 0 17 0 2026-10-04T17:14:11+00:00

75 tests, features 0x1fe

Feature flags: URING_CMD_COMP_IN_TASK NEED_GET_DATA USER_RECOVERY USER_RECOVERY_REISSUE UNPRIVILEGED_DEV CMD_IOCTL_ENCODE USER_COPY ZONED

Test	Result	Seconds	Detail
`probe`	pass	0.2	{"features":"0x1fe","opcode":"ioctl","library":"features 0x1fe known=true"}
`unit/examples_ublk-loop`	pass	0.4	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	5.8	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.4	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	0.9	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.5	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	1.8	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.3	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.2	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.7	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	103.7	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	73.4	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.1
`io/integrity/q1-d64-bs512`	pass	0.9
`io/integrity/q2-d32-bs4096`	pass	1.0
`io/integrity/q4-d128-bs512`	pass	0.9
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.2
`io/boundaries`	pass	0.2
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.2
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.2
`io/write-zeroes-large`	pass	0.2
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.2
`io/readonly`	pass	0.1
`io/multi-device`	pass	1.8
`params/geometry`	pass	0.1
`fs/ext4`	pass	2.3
`fs/xfs`	pass	2.9
`lifecycle/create-close`	pass	0.2
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.7
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.3
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.3
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	0.9
`features/integrity-user-copy`	pass	1.0
`features/integrity-need-get-data`	pass	1.0
`features/integrity-threads-per-queue`	skip		kernel lacks PER_IO_DAEMON (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY\|AUTO_BUF_REG\|BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy-close-under-load`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/handler-async`	pass	0.8
`features/fua`	pass	0.1
`features/tag-find`	pass	0.1
`features/resize`	skip		kernel lacks UPDATE_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.6
`recovery/detach-handoff`	pass	0.5
`recovery/queue-mode`	pass	1.2
`recovery/fail-io-mode`	skip		kernel lacks USER_RECOVERY_FAIL_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zoned`	pass	0.3
`features/integrity`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/unprivileged`	pass	0.2

7.1.13+deb13-amd64upstream 7.1 Debian 13 backports x86_64 initramfs fetch-failed 0 0 0 1 2026-10-04T18:19:05+00:00

1 test, no ublk_drv

Test	Result	Seconds	Detail
`fetch`	error		extract failed

fedora#

Kernel Distro Arch Boot Status Pass Fail Skip Error Date

6.19.14-108.fc42.x86_64upstream 6.19 Fedora 42 x86_64 initramfstcg pass 63 0 13 0 2026-10-04T17:17:59+00:00

76 tests, features 0x7fff

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x7fff","opcode":"ioctl","library":"features 0x7fff known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.7	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.2	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.7	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.7	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.5	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.9	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	114.2	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	80.4	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	1.1
`io/integrity/q2-d32-bs4096`	pass	1.1
`io/integrity/q4-d128-bs512`	pass	1.4
`io/integrity/q4-d16-bs4096-maxio64k`	pass	1.1
`io/integrity-buffered`	pass	1.2
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.2
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.2
`io/write-zeroes-large`	pass	0.2
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	3.1
`params/geometry`	pass	0.1
`fs/ext4`	pass	2.7
`fs/xfs`	pass	5.0
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.4
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.3
`lifecycle/server-killed`	pass	0.3
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	3.3
`features/integrity-user-copy`	pass	1.1
`features/integrity-need-get-data`	pass	3.2
`features/integrity-threads-per-queue`	pass	1.2
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zero-copy`	pass	1.3
`features/batch-io-zero-copy`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zero-copy-close-under-load`	pass	0.3
`features/handler-async`	pass	0.6
`features/fua`	pass	0.1
`features/tag-find`	pass	0.1
`features/resize`	pass	0.1
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.6
`recovery/detach-handoff`	pass	0.6
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zoned`	pass	0.1
`features/integrity`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/unprivileged`	pass	0.1
`kernel-log/io_uring-counted_by-ubsan`	skip		UBSAN report, likely a __counted_by ordering issue in io_uring io_buffer_register_bvec under ublk zero copy (site/content/guide/kernel-bugs.md#found-by-go-ublks-kernel-matrix); 2 line(s), first: [ 253.347226] UBSAN: array-index-out-of-bounds in io_uring/rsrc.c:992:12

7.2.8-100.fc43.x86_64upstream 7.2 Fedora 43 x86_64 initramfstcg pass 74 0 2 0 2026-10-04T17:18:33+00:00

76 tests, features 0xfffff

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0xfffff","opcode":"ioctl","library":"features 0xfffff known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.5	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.2	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.7	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.7	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.9	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	113.4	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	84.0	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.2
`io/integrity/q1-d64-bs512`	pass	1.0
`io/integrity/q2-d32-bs4096`	pass	1.2
`io/integrity/q4-d128-bs512`	pass	1.6
`io/integrity/q4-d16-bs4096-maxio64k`	pass	1.1
`io/integrity-buffered`	pass	1.4
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.2
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.2
`io/write-zeroes-large`	pass	0.2
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	2.2
`params/geometry`	pass	0.1
`fs/ext4`	pass	2.5
`fs/xfs`	pass	5.7
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.4
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.3
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.4
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	1.2
`features/integrity-user-copy`	pass	3.5
`features/integrity-need-get-data`	pass	1.0
`features/integrity-threads-per-queue`	pass	3.1
`features/integrity-batch-io`	pass	1.1
`features/integrity-batch-io-user-copy`	pass	3.3
`features/zero-copy`	pass	3.4
`features/batch-io-zero-copy`	pass	1.4
`features/batch-io-close-under-load`	pass	0.3
`features/zero-copy-close-under-load`	pass	0.3
`features/handler-async`	pass	1.1
`features/fua`	pass	0.2
`features/tag-find`	pass	0.1
`features/resize`	pass	0.1
`features/no-partition-scan`	pass	3.2
`features/safe-stop`	pass	0.1
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.6
`recovery/detach-handoff`	pass	0.6
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	pass	0.6
`recovery/batch-detach-handoff`	pass	0.6
`recovery/integrity-kill-and-recover`	pass	0.6
`features/zoned`	pass	0.1
`features/integrity`	pass	0.1
`features/shared-memory`	pass	0.1
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON\|BATCH_IO\|INTEGRITY\|SAFE_STOP_DEV\|NO_AUTO_PART_SCAN\|SHMEM_ZC, known=true)
`features/unprivileged`	pass	0.1
`kernel-log/io_uring-counted_by-ubsan`	skip		UBSAN report, likely a __counted_by ordering issue in io_uring io_buffer_register_bvec under ublk zero copy (site/content/guide/kernel-bugs.md#found-by-go-ublks-kernel-matrix); 2 line(s), first: [ 260.774796] UBSAN: array-index-out-of-bounds in io_uring/rsrc.c:1070:12

7.2.8-200.fc44.x86_64upstream 7.2 Fedora 44 x86_64 initramfstcg pass 74 0 2 0 2026-10-04T17:18:41+00:00

76 tests, features 0xfffff

Test	Result	Seconds	Detail
`probe`	pass	0.2	{"features":"0xfffff","opcode":"ioctl","library":"features 0xfffff known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.7	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.6	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.3	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.7	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.5	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.8	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	114.4	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	83.9	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.1
`io/integrity/q1-d64-bs512`	pass	1.0
`io/integrity/q2-d32-bs4096`	pass	1.2
`io/integrity/q4-d128-bs512`	pass	1.6
`io/integrity/q4-d16-bs4096-maxio64k`	pass	1.0
`io/integrity-buffered`	pass	1.4
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.2
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.2
`io/write-zeroes-large`	pass	0.2
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	3.0
`params/geometry`	pass	0.1
`fs/ext4`	pass	2.5
`fs/xfs`	pass	5.5
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.4
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.3
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	3.0
`features/integrity-user-copy`	pass	1.1
`features/integrity-need-get-data`	pass	1.0
`features/integrity-threads-per-queue`	pass	1.0
`features/integrity-batch-io`	pass	1.1
`features/integrity-batch-io-user-copy`	pass	1.1
`features/zero-copy`	pass	3.5
`features/batch-io-zero-copy`	pass	1.1
`features/batch-io-close-under-load`	pass	0.3
`features/zero-copy-close-under-load`	pass	0.3
`features/handler-async`	pass	0.8
`features/fua`	pass	0.1
`features/tag-find`	pass	0.1
`features/resize`	pass	0.1
`features/no-partition-scan`	pass	3.1
`features/safe-stop`	pass	0.1
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.8
`recovery/detach-handoff`	pass	0.7
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	pass	0.6
`recovery/batch-detach-handoff`	pass	0.5
`recovery/integrity-kill-and-recover`	pass	0.6
`features/zoned`	pass	0.2
`features/integrity`	pass	0.1
`features/shared-memory`	pass	0.1
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON\|BATCH_IO\|INTEGRITY\|SAFE_STOP_DEV\|NO_AUTO_PART_SCAN\|SHMEM_ZC, known=true)
`features/unprivileged`	pass	0.1
`kernel-log/io_uring-counted_by-ubsan`	skip		UBSAN report, likely a __counted_by ordering issue in io_uring io_buffer_register_bvec under ublk zero copy (site/content/guide/kernel-bugs.md#found-by-go-ublks-kernel-matrix); 2 line(s), first: [ 257.079700] UBSAN: array-index-out-of-bounds in io_uring/rsrc.c:1070:12

oracle#

Kernel Distro Arch Boot Status Pass Fail Skip Error Date

5.15.0-324.217.5.3.el9uek.x86_64upstream 5.15 Oracle Linux 9 UEK7 x86_64 initramfstcg no ublk_drv 7 2 5 0 2026-10-04T16:15:11+00:00

14 tests, no ublk_drv

Test	Result	Seconds	Detail
`probe`	skip		no /dev/ublk-control
`unit/examples_ublk-loop`	pass	0.4	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	5.9	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.4	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	0.8	27 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	fail	0.6	30 pass, 23 fail, 4 skip; failed: TestHotPathDoesNotAllocate TestSetupDropsRejectedOptionalFlags TestProbe TestNopRoundTrips TestMsgRingWakesAnotherRing TestDeferTaskrunSingleIssuer TestRingCloseReleasesMappingsAndFds TestRealRingNewCloseWithPipe TestRealRingSubmitCtrlCmdPipeUnsupported TestRealRingSecondRoundTripSameRing TestSubmitCtrlCmdStagesCallerBuffer TestCtrlTimeoutAndStragglerCQE TestCtrlContextCancelReapsCommand TestCtrlContextCancelGraceExpires TestCloseDuringUnboundedCtrlWait TestCloseWhileWaitForCompletionParked TestRealRingOpenCloseNoRegistration TestSparseBufferTable TestFixedFiles TestProvidedBufferRing TestIoUringCloseReleasesRegistrations TestSubmitIOCmdReturnsFabricatedSuccess TestSubmitIOCmdProductionCallSiteDiscardsResult bench_test.go:42: NewMinimalRing: io_uring_setup entries=8 flags=0xc00: invalid argument core_test.go:117: features 0x7ff core_test.go:129: Flags() = 0x0, want only IORING_SETUP_SUBMIT_ALL
`unit/root`	pass	0.3	45 pass, 0 fail, 0 skip
`unit/test_unit`	fail	0.3	6 pass, 1 fail, 0 skip; failed: TestURingInterface unit_test.go:75: NewRing failed: io_uring_setup entries=32 flags=0xc00: invalid argument
`integration/large-io`	skip		no /dev/ublk-control
`verify-sweep`	skip		no /dev/ublk-control
`loop-e2e`	skip		no /dev/ublk-control
`suite`	skip		no /dev/ublk-control

6.12.0-206.104.4.4.el9uek.x86_64upstream 6.12 Oracle Linux 9 UEK8 x86_64 initramfstcg pass 58 0 17 0 2026-10-04T17:43:17+00:00

75 tests, features 0x1fe

Feature flags: URING_CMD_COMP_IN_TASK NEED_GET_DATA USER_RECOVERY USER_RECOVERY_REISSUE UNPRIVILEGED_DEV CMD_IOCTL_ENCODE USER_COPY ZONED

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x1fe","opcode":"ioctl","srcversion":"8E25B1D69C813343B3FB102","library":"features 0x1fe known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.7	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.4	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.0	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.4	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.6	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	98.1	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	75.3	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	0.9
`io/integrity/q1-d64-bs512`	pass	0.9
`io/integrity/q2-d32-bs4096`	pass	1.0
`io/integrity/q4-d128-bs512`	pass	0.8
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.8
`io/integrity-buffered`	pass	0.9
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.1
`io/discard-large`	pass	0.1
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	1.3
`params/geometry`	pass	0.1
`fs/ext4`	pass	1.9
`fs/xfs`	pass	3.5
`lifecycle/create-close`	pass	0.2
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.4
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.1
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	3.0
`features/integrity-user-copy`	pass	0.9
`features/integrity-need-get-data`	pass	0.9
`features/integrity-threads-per-queue`	skip		kernel lacks PER_IO_DAEMON (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY\|AUTO_BUF_REG\|BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy-close-under-load`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/handler-async`	pass	0.7
`features/fua`	pass	0.1
`features/tag-find`	pass	0.1
`features/resize`	skip		kernel lacks UPDATE_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.5
`recovery/detach-handoff`	pass	0.5
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	skip		kernel lacks USER_RECOVERY_FAIL_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zoned`	pass	0.2
`features/integrity`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/unprivileged`	pass	0.1

rhel#

Kernel Distro Arch Boot Status Pass Fail Skip Error Date

5.14.0-687.53.1.el9_8.x86_64upstream 5.14 AlmaLinux 9 x86_64 initramfstcg no ublk_drv 7 2 5 0 2026-10-04T15:44:37+00:00

14 tests, no ublk_drv

Test	Result	Seconds	Detail
`probe`	skip		no /dev/ublk-control
`unit/examples_ublk-loop`	pass	0.4	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.1	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	0.8	27 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.7	37 pass, 0 fail, 0 skip
`unit/internal_uring`	fail	0.4	18 pass, 12 fail, 27 skip; failed: TestRealRingNewCloseWithPipe TestRealRingSubmitCtrlCmdPipeUnsupported TestRealRingSecondRoundTripSameRing TestSubmitCtrlCmdStagesCallerBuffer TestCtrlTimeoutAndStragglerCQE TestCtrlContextCancelReapsCommand TestCtrlContextCancelGraceExpires TestCloseDuringUnboundedCtrlWait TestCloseWhileWaitForCompletionParked TestRealRingOpenCloseNoRegistration TestSubmitIOCmdReturnsFabricatedSuccess TestSubmitIOCmdProductionCallSiteDiscardsResult bench_test.go:18: io_uring unavailable: io_uring_setup entries=8 flags=0x0: operation not permitted core_test.go:104: io_uring unavailable: io_uring_setup entries=5 flags=0x8: operation not permitted core_test.go:124: io_uring unavailable: io_uring_setup entries=4 flags=0x2080: operation not permitted
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	fail	0.3	6 pass, 1 fail, 0 skip; failed: TestURingInterface unit_test.go:75: NewRing failed: io_uring_setup entries=32 flags=0xc00: operation not permitted
`integration/large-io`	skip		no /dev/ublk-control
`verify-sweep`	skip		no /dev/ublk-control
`loop-e2e`	skip		no /dev/ublk-control
`suite`	skip		no /dev/ublk-control

5.14.0-754.el9.x86_64upstream 5.14 CentOS Stream 9 x86_64 initramfstcg no ublk_drv 7 2 5 0 2026-10-04T15:46:23+00:00

14 tests, no ublk_drv

Test	Result	Seconds	Detail
`probe`	skip		no /dev/ublk-control
`unit/examples_ublk-loop`	pass	0.4	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	5.8	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	0.9	27 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	fail	0.4	18 pass, 12 fail, 27 skip; failed: TestRealRingNewCloseWithPipe TestRealRingSubmitCtrlCmdPipeUnsupported TestRealRingSecondRoundTripSameRing TestSubmitCtrlCmdStagesCallerBuffer TestCtrlTimeoutAndStragglerCQE TestCtrlContextCancelReapsCommand TestCtrlContextCancelGraceExpires TestCloseDuringUnboundedCtrlWait TestCloseWhileWaitForCompletionParked TestRealRingOpenCloseNoRegistration TestSubmitIOCmdReturnsFabricatedSuccess TestSubmitIOCmdProductionCallSiteDiscardsResult bench_test.go:18: io_uring unavailable: io_uring_setup entries=8 flags=0x0: operation not permitted core_test.go:104: io_uring unavailable: io_uring_setup entries=5 flags=0x8: operation not permitted core_test.go:124: io_uring unavailable: io_uring_setup entries=4 flags=0x2080: operation not permitted
`unit/root`	pass	0.3	45 pass, 0 fail, 0 skip
`unit/test_unit`	fail	0.3	6 pass, 1 fail, 0 skip; failed: TestURingInterface unit_test.go:75: NewRing failed: io_uring_setup entries=32 flags=0xc00: operation not permitted
`integration/large-io`	skip		no /dev/ublk-control
`verify-sweep`	skip		no /dev/ublk-control
`loop-e2e`	skip		no /dev/ublk-control
`suite`	skip		no /dev/ublk-control

5.14.0-687.54.1.el9_8.x86_64upstream 5.14 Rocky Linux 9 x86_64 initramfstcg no ublk_drv 7 2 5 0 2026-10-04T16:16:53+00:00

14 tests, no ublk_drv

Test	Result	Seconds	Detail
`probe`	skip		no /dev/ublk-control
`unit/examples_ublk-loop`	pass	0.3	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	5.6	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	0.8	27 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	fail	0.4	18 pass, 12 fail, 27 skip; failed: TestRealRingNewCloseWithPipe TestRealRingSubmitCtrlCmdPipeUnsupported TestRealRingSecondRoundTripSameRing TestSubmitCtrlCmdStagesCallerBuffer TestCtrlTimeoutAndStragglerCQE TestCtrlContextCancelReapsCommand TestCtrlContextCancelGraceExpires TestCloseDuringUnboundedCtrlWait TestCloseWhileWaitForCompletionParked TestRealRingOpenCloseNoRegistration TestSubmitIOCmdReturnsFabricatedSuccess TestSubmitIOCmdProductionCallSiteDiscardsResult bench_test.go:18: io_uring unavailable: io_uring_setup entries=8 flags=0x0: operation not permitted core_test.go:104: io_uring unavailable: io_uring_setup entries=5 flags=0x8: operation not permitted core_test.go:124: io_uring unavailable: io_uring_setup entries=4 flags=0x2080: operation not permitted
`unit/root`	pass	0.3	45 pass, 0 fail, 0 skip
`unit/test_unit`	fail	0.3	6 pass, 1 fail, 0 skip; failed: TestURingInterface unit_test.go:75: NewRing failed: io_uring_setup entries=32 flags=0xc00: operation not permitted
`integration/large-io`	skip		no /dev/ublk-control
`verify-sweep`	skip		no /dev/ublk-control
`loop-e2e`	skip		no /dev/ublk-control
`suite`	skip		no /dev/ublk-control

6.12.0-211.56.1.el10_2.x86_64upstream 6.12 AlmaLinux 10 x86_64 initramfstcg fail 7 68 0 0 2026-10-04T17:10:26+00:00

75 tests

Test	Result	Seconds	Detail
`probe`	fail	0.2	{"features":"unknown","srcversion":"5799E24E6A58591A9F62173","error":"io_uring setup: io_uring_setup entries=4 flags=0xc00: operation not permitted","library":"error: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)"}
`unit/examples_ublk-loop`	pass	0.3	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	5.4	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.4	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	0.9	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.4	37 pass, 0 fail, 0 skip
`unit/internal_uring`	fail	0.3	18 pass, 12 fail, 27 skip; failed: TestRealRingNewCloseWithPipe TestRealRingSubmitCtrlCmdPipeUnsupported TestRealRingSecondRoundTripSameRing TestSubmitCtrlCmdStagesCallerBuffer TestCtrlTimeoutAndStragglerCQE TestCtrlContextCancelReapsCommand TestCtrlContextCancelGraceExpires TestCloseDuringUnboundedCtrlWait TestCloseWhileWaitForCompletionParked TestRealRingOpenCloseNoRegistration TestSubmitIOCmdReturnsFabricatedSuccess TestSubmitIOCmdProductionCallSiteDiscardsResult bench_test.go:18: io_uring unavailable: io_uring_setup entries=8 flags=0x0: operation not permitted core_test.go:133: io_uring unavailable: io_uring_setup entries=5 flags=0x8: operation not permitted core_test.go:153: io_uring unavailable: io_uring_setup entries=4 flags=0x2080: operation not permitted
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	fail	0.3	6 pass, 1 fail, 0 skip; failed: TestURingInterface unit_test.go:75: NewRing failed: io_uring_setup entries=32 flags=0xc00: operation not permitted
`integration/large-io`	fail	0.3	0 pass, 1 fail, 0 skip; failed: TestDisposableLargeIOPublicRunnerPaths largeio_kernel_test.go:84: CreateAndServe with existing ublk privilege: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group) largeio_kernel_test.go:84: Create with existing ublk privilege: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`verify-sweep`	fail	4.3	integrity sweep: PASS=0 FAIL=24; FAIL: device did not appear (q=1 d=1) FAIL: device did not appear (q=1 d=1) FAIL: device did not appear (q=1 d=64) FAIL: device did not appear (q=1 d=64) FAIL: device did not appear (q=1 d=128) FAIL: device did not appear (q=1 d=128) FAIL: device did not appear (q=2 d=1) FAIL: device did not appear (q=2 d=1)
`loop-e2e`	fail	29.0	;
`io/integrity/q1-d1-bs512`	fail	0.0	CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/integrity/q1-d64-bs512`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/integrity/q2-d32-bs4096`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/integrity/q4-d128-bs512`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/integrity/q4-d16-bs4096-maxio64k`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/integrity-buffered`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/boundaries`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/flush`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/no-volatile-cache`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/discard`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/discard-large`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/write-zeroes`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/write-zeroes-large`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/no-discard-advertised`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/error-propagation`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/readonly`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/multi-device`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`params/geometry`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`fs/ext4`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`fs/xfs`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/create-close`	fail	0.0	failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/fixed-id`	fail		open control device: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted
`lifecycle/create-start-stop-close`	fail		failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/ctx-cancel-idle`	fail		failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/churn-leaks`	fail		failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/concurrent-create`	fail	0.0	worker 3 cycle 0: create: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/close-under-load`	fail	0.0	failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/server-killed`	fail	0.0	server: ERROR failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/restart-after-stop`	fail		failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/chaos`	fail	0.0	server create: server: ERROR failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/list-high-id`	fail		failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/delete-async`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/probe`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/integrity-inline`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/integrity-user-copy`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/integrity-need-get-data`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/integrity-threads-per-queue`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/integrity-batch-io`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/integrity-batch-io-user-copy`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/zero-copy`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/batch-io-zero-copy`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/batch-io-close-under-load`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/zero-copy-close-under-load`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/handler-async`	fail	0.0	CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/fua`	fail	0.0	CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/tag-find`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/resize`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/no-partition-scan`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/safe-stop`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/ctx-cancel-under-load`	fail	0.0	failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`recovery/kill-and-recover`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`recovery/detach-handoff`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`recovery/queue-mode`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`recovery/fail-io-mode`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`recovery/batch-kill-and-recover`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`recovery/batch-detach-handoff`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`recovery/integrity-kill-and-recover`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/zoned`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/integrity`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/shared-memory`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/io-desc-size`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/unprivileged`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)

6.12.0-211.56.1.el10_2.x86_64upstream 6.12 AlmaLinux 10 [sysctl.kernel.io_uring_disabled=0] x86_64 initramfstcg pass 63 0 12 0 2026-10-04T18:04:41+00:00

75 tests, features 0x7fff

Test	Result	Seconds	Detail
`probe`	pass	0.2	{"features":"0x7fff","opcode":"ioctl","srcversion":"5799E24E6A58591A9F62173","library":"features 0x7fff known=true"}
`unit/examples_ublk-loop`	pass	0.4	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	5.7	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.0	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.5	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.1	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.2	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.7	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	98.3	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	74.2	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	0.9
`io/integrity/q2-d32-bs4096`	pass	1.0
`io/integrity/q4-d128-bs512`	pass	0.9
`io/integrity/q4-d16-bs4096-maxio64k`	pass	1.0
`io/integrity-buffered`	pass	1.1
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.1
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.2
`io/readonly`	pass	0.1
`io/multi-device`	pass	1.8
`params/geometry`	pass	0.1
`fs/ext4`	pass	2.1
`fs/xfs`	pass	3.6
`lifecycle/create-close`	pass	0.2
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.4
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.3
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	0.9
`features/integrity-user-copy`	pass	0.9
`features/integrity-need-get-data`	pass	0.9
`features/integrity-threads-per-queue`	pass	0.9
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zero-copy`	pass	1.1
`features/batch-io-zero-copy`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zero-copy-close-under-load`	pass	0.2
`features/handler-async`	pass	0.7
`features/fua`	pass	0.1
`features/tag-find`	pass	0.1
`features/resize`	pass	0.1
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.6
`recovery/detach-handoff`	pass	0.6
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zoned`	pass	0.2
`features/integrity`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/unprivileged`	pass	0.1

6.12.0-271.el10.x86_64upstream 6.12 CentOS Stream 10 x86_64 initramfstcg fail 7 68 0 0 2026-10-04T17:10:24+00:00

75 tests

Test	Result	Seconds	Detail
`probe`	fail	0.2	{"features":"unknown","srcversion":"A72A5ED01780D367B935BB1","error":"io_uring setup: io_uring_setup entries=4 flags=0xc00: operation not permitted","library":"error: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)"}
`unit/examples_ublk-loop`	pass	0.4	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	5.4	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.4	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	0.8	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.5	37 pass, 0 fail, 0 skip
`unit/internal_uring`	fail	0.3	18 pass, 12 fail, 27 skip; failed: TestRealRingNewCloseWithPipe TestRealRingSubmitCtrlCmdPipeUnsupported TestRealRingSecondRoundTripSameRing TestSubmitCtrlCmdStagesCallerBuffer TestCtrlTimeoutAndStragglerCQE TestCtrlContextCancelReapsCommand TestCtrlContextCancelGraceExpires TestCloseDuringUnboundedCtrlWait TestCloseWhileWaitForCompletionParked TestRealRingOpenCloseNoRegistration TestSubmitIOCmdReturnsFabricatedSuccess TestSubmitIOCmdProductionCallSiteDiscardsResult bench_test.go:18: io_uring unavailable: io_uring_setup entries=8 flags=0x0: operation not permitted core_test.go:133: io_uring unavailable: io_uring_setup entries=5 flags=0x8: operation not permitted core_test.go:153: io_uring unavailable: io_uring_setup entries=4 flags=0x2080: operation not permitted
`unit/root`	pass	0.3	45 pass, 0 fail, 0 skip
`unit/test_unit`	fail	0.3	6 pass, 1 fail, 0 skip; failed: TestURingInterface unit_test.go:75: NewRing failed: io_uring_setup entries=32 flags=0xc00: operation not permitted
`integration/large-io`	fail	0.3	0 pass, 1 fail, 0 skip; failed: TestDisposableLargeIOPublicRunnerPaths largeio_kernel_test.go:84: CreateAndServe with existing ublk privilege: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group) largeio_kernel_test.go:84: Create with existing ublk privilege: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`verify-sweep`	fail	4.3	integrity sweep: PASS=0 FAIL=24; FAIL: device did not appear (q=1 d=1) FAIL: device did not appear (q=1 d=1) FAIL: device did not appear (q=1 d=64) FAIL: device did not appear (q=1 d=64) FAIL: device did not appear (q=1 d=128) FAIL: device did not appear (q=1 d=128) FAIL: device did not appear (q=2 d=1) FAIL: device did not appear (q=2 d=1)
`loop-e2e`	fail	29.0	;
`io/integrity/q1-d1-bs512`	fail	0.0	CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/integrity/q1-d64-bs512`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/integrity/q2-d32-bs4096`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/integrity/q4-d128-bs512`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/integrity/q4-d16-bs4096-maxio64k`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/integrity-buffered`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/boundaries`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/flush`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/no-volatile-cache`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/discard`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/discard-large`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/write-zeroes`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/write-zeroes-large`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/no-discard-advertised`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/error-propagation`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/readonly`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/multi-device`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`params/geometry`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`fs/ext4`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`fs/xfs`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/create-close`	fail	0.1	failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/fixed-id`	fail		open control device: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted
`lifecycle/create-start-stop-close`	fail		failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/ctx-cancel-idle`	fail		failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/churn-leaks`	fail		failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/concurrent-create`	fail	0.0	worker 3 cycle 0: create: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/close-under-load`	fail	0.0	failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/server-killed`	fail	0.1	server: ERROR failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/restart-after-stop`	fail		failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/chaos`	fail	0.0	create: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/list-high-id`	fail		failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/delete-async`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/probe`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/integrity-inline`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/integrity-user-copy`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/integrity-need-get-data`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/integrity-threads-per-queue`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/integrity-batch-io`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/integrity-batch-io-user-copy`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/zero-copy`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/batch-io-zero-copy`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/batch-io-close-under-load`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/zero-copy-close-under-load`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/handler-async`	fail	0.0	CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/fua`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/tag-find`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/resize`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/no-partition-scan`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/safe-stop`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/ctx-cancel-under-load`	fail	0.0	failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`recovery/kill-and-recover`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`recovery/detach-handoff`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`recovery/queue-mode`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`recovery/fail-io-mode`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`recovery/batch-kill-and-recover`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`recovery/batch-detach-handoff`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`recovery/integrity-kill-and-recover`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/zoned`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/integrity`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/shared-memory`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/io-desc-size`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/unprivileged`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)

6.12.0-271.el10.x86_64upstream 6.12 CentOS Stream 10 [sysctl.kernel.io_uring_disabled=0] x86_64 initramfstcg pass 63 0 12 0 2026-10-04T18:04:45+00:00

75 tests, features 0x7fff

Test	Result	Seconds	Detail
`probe`	pass	0.2	{"features":"0x7fff","opcode":"ioctl","srcversion":"A72A5ED01780D367B935BB1","library":"features 0x7fff known=true"}
`unit/examples_ublk-loop`	pass	0.4	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	5.7	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.0	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.5	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.1	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.2	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.7	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	102.0	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	73.5	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	0.9
`io/integrity/q2-d32-bs4096`	pass	1.0
`io/integrity/q4-d128-bs512`	pass	0.9
`io/integrity/q4-d16-bs4096-maxio64k`	pass	1.0
`io/integrity-buffered`	pass	1.1
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.1
`io/discard-large`	pass	0.1
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	1.9
`params/geometry`	pass	0.1
`fs/ext4`	pass	2.1
`fs/xfs`	pass	3.5
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.4
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.3
`lifecycle/server-killed`	pass	0.3
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	2.8
`features/integrity-user-copy`	pass	0.9
`features/integrity-need-get-data`	pass	0.9
`features/integrity-threads-per-queue`	pass	0.8
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zero-copy`	pass	1.1
`features/batch-io-zero-copy`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zero-copy-close-under-load`	pass	0.3
`features/handler-async`	pass	0.6
`features/fua`	pass	0.1
`features/tag-find`	pass	0.1
`features/resize`	pass	0.1
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.5
`recovery/detach-handoff`	pass	0.5
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zoned`	pass	0.1
`features/integrity`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/unprivileged`	pass	0.1

6.12.0-211.61.1.el10_2.x86_64upstream 6.12 Rocky Linux 10 x86_64 initramfstcg fail 7 68 0 0 2026-10-04T17:40:32+00:00

75 tests

Test	Result	Seconds	Detail
`probe`	fail	0.2	{"features":"unknown","srcversion":"5799E24E6A58591A9F62173","error":"io_uring setup: io_uring_setup entries=4 flags=0xc00: operation not permitted","library":"error: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)"}
`unit/examples_ublk-loop`	pass	0.4	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.7	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	0.8	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.7	37 pass, 0 fail, 0 skip
`unit/internal_uring`	fail	0.4	18 pass, 12 fail, 27 skip; failed: TestRealRingNewCloseWithPipe TestRealRingSubmitCtrlCmdPipeUnsupported TestRealRingSecondRoundTripSameRing TestSubmitCtrlCmdStagesCallerBuffer TestCtrlTimeoutAndStragglerCQE TestCtrlContextCancelReapsCommand TestCtrlContextCancelGraceExpires TestCloseDuringUnboundedCtrlWait TestCloseWhileWaitForCompletionParked TestRealRingOpenCloseNoRegistration TestSubmitIOCmdReturnsFabricatedSuccess TestSubmitIOCmdProductionCallSiteDiscardsResult bench_test.go:18: io_uring unavailable: io_uring_setup entries=8 flags=0x0: operation not permitted core_test.go:133: io_uring unavailable: io_uring_setup entries=5 flags=0x8: operation not permitted core_test.go:153: io_uring unavailable: io_uring_setup entries=4 flags=0x2080: operation not permitted
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	fail	0.4	6 pass, 1 fail, 0 skip; failed: TestURingInterface unit_test.go:75: NewRing failed: io_uring_setup entries=32 flags=0xc00: operation not permitted
`integration/large-io`	fail	0.4	0 pass, 1 fail, 0 skip; failed: TestDisposableLargeIOPublicRunnerPaths largeio_kernel_test.go:84: CreateAndServe with existing ublk privilege: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group) largeio_kernel_test.go:84: Create with existing ublk privilege: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`verify-sweep`	fail	5.7	integrity sweep: PASS=0 FAIL=24; FAIL: device did not appear (q=1 d=1) FAIL: device did not appear (q=1 d=1) FAIL: device did not appear (q=1 d=64) FAIL: device did not appear (q=1 d=64) FAIL: device did not appear (q=1 d=128) FAIL: device did not appear (q=1 d=128) FAIL: device did not appear (q=2 d=1) FAIL: device did not appear (q=2 d=1)
`loop-e2e`	fail	30.7	;
`io/integrity/q1-d1-bs512`	fail	0.0	CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/integrity/q1-d64-bs512`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/integrity/q2-d32-bs4096`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/integrity/q4-d128-bs512`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/integrity/q4-d16-bs4096-maxio64k`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/integrity-buffered`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/boundaries`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/flush`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/no-volatile-cache`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/discard`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/discard-large`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/write-zeroes`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/write-zeroes-large`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/no-discard-advertised`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/error-propagation`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/readonly`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`io/multi-device`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`params/geometry`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`fs/ext4`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`fs/xfs`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/create-close`	fail	0.1	failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/fixed-id`	fail		open control device: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted
`lifecycle/create-start-stop-close`	fail		failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/ctx-cancel-idle`	fail		failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/churn-leaks`	fail		failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/concurrent-create`	fail	0.1	worker 0 cycle 0: create: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/close-under-load`	fail	0.1	failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/server-killed`	fail	0.1	server: ERROR failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/restart-after-stop`	fail		failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/chaos`	fail	0.1	create: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/list-high-id`	fail		failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/delete-async`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/probe`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/integrity-inline`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/integrity-user-copy`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/integrity-need-get-data`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/integrity-threads-per-queue`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/integrity-batch-io`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/integrity-batch-io-user-copy`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/zero-copy`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/batch-io-zero-copy`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/batch-io-close-under-load`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/zero-copy-close-under-load`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/handler-async`	fail	0.0	CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/fua`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/tag-find`	fail		CreateAndServe: failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/resize`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/no-partition-scan`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/safe-stop`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`lifecycle/ctx-cancel-under-load`	fail	0.0	failed to create controller: failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`recovery/kill-and-recover`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`recovery/detach-handoff`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`recovery/queue-mode`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`recovery/fail-io-mode`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`recovery/batch-kill-and-recover`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`recovery/batch-detach-handoff`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`recovery/integrity-kill-and-recover`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/zoned`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/integrity`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/shared-memory`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/io-desc-size`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)
`features/unprivileged`	fail		failed to create io_uring: io_uring_setup entries=4 flags=0xc00: operation not permitted (io_uring is disabled: set sysctl kernel.io_uring_disabled=0, or 1 with this process in kernel.io_uring_group)

6.12.0-211.61.1.el10_2.x86_64upstream 6.12 Rocky Linux 10 [sysctl.kernel.io_uring_disabled=0] x86_64 initramfstcg pass 63 0 12 0 2026-10-04T18:04:45+00:00

75 tests, features 0x7fff

Test	Result	Seconds	Detail
`probe`	pass	0.2	{"features":"0x7fff","opcode":"ioctl","srcversion":"5799E24E6A58591A9F62173","library":"features 0x7fff known=true"}
`unit/examples_ublk-loop`	pass	0.4	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	5.8	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.4	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.0	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.5	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.1	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.2	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.7	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	101.0	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	74.0	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	0.9
`io/integrity/q2-d32-bs4096`	pass	1.0
`io/integrity/q4-d128-bs512`	pass	0.9
`io/integrity/q4-d16-bs4096-maxio64k`	pass	1.0
`io/integrity-buffered`	pass	1.2
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.1
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	1.9
`params/geometry`	pass	0.1
`fs/ext4`	pass	2.0
`fs/xfs`	pass	3.6
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.4
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.3
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.3
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	2.7
`features/integrity-user-copy`	pass	0.9
`features/integrity-need-get-data`	pass	0.9
`features/integrity-threads-per-queue`	pass	0.8
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zero-copy`	pass	1.1
`features/batch-io-zero-copy`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zero-copy-close-under-load`	pass	0.3
`features/handler-async`	pass	0.7
`features/fua`	pass	0.1
`features/tag-find`	pass	0.1
`features/resize`	pass	0.1
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.5
`recovery/detach-handoff`	pass	0.5
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zoned`	pass	0.3
`features/integrity`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/unprivileged`	pass	0.1

suse#

Kernel Distro Arch Boot Status Pass Fail Skip Error Date

6.4.0-150600.23.103-defaultupstream 6.4 openSUSE Leap 15.6 x86_64 initramfstcg pass 57 0 18 0 2026-10-04T17:39:31+00:00

75 tests, features 0x1fe

Feature flags: URING_CMD_COMP_IN_TASK NEED_GET_DATA USER_RECOVERY USER_RECOVERY_REISSUE UNPRIVILEGED_DEV CMD_IOCTL_ENCODE USER_COPY ZONED

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x1fe","opcode":"ioctl","srcversion":"79902CC49213BE9EB29753D","library":"features 0x1fe known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.5	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.4	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.0	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.1	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.3	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.7	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	100.4	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	72.7	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	0.9
`io/integrity/q1-d64-bs512`	pass	0.8
`io/integrity/q2-d32-bs4096`	pass	0.9
`io/integrity/q4-d128-bs512`	pass	0.8
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.0
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.1
`io/discard-large`	pass	0.1
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	1.3
`params/geometry`	pass	0.1
`fs/ext4`	pass	1.5
`fs/xfs`	pass	1.9
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.3
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.3
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.4
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	skip	0.1	kernel lacks DEL_DEV_ASYNC (6.11+): device 0: ublk DEL_DEV_ASYNC dev 0: operation not supported
`features/probe`	pass
`features/integrity-inline`	pass	0.9
`features/integrity-user-copy`	pass	0.9
`features/integrity-need-get-data`	pass	0.8
`features/integrity-threads-per-queue`	skip		kernel lacks PER_IO_DAEMON (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY\|AUTO_BUF_REG\|BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy-close-under-load`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/handler-async`	pass	0.6
`features/fua`	pass	0.1
`features/tag-find`	pass	0.1
`features/resize`	skip		kernel lacks UPDATE_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	5.5
`recovery/detach-handoff`	pass	5.6
`recovery/queue-mode`	pass	6.3
`recovery/fail-io-mode`	skip		kernel lacks USER_RECOVERY_FAIL_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zoned`	pass	0.2
`features/integrity`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/unprivileged`	pass	0.1

6.12.0-160000.38-defaultupstream 6.12 openSUSE Leap 16.0 x86_64 initramfstcg no ublk_drv 9 0 5 0 2026-10-04T16:13:53+00:00

14 tests, no ublk_drv

Test	Result	Seconds	Detail
`probe`	skip		no /dev/ublk-control
`unit/examples_ublk-loop`	pass	0.4	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	5.3	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.4	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	0.8	27 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.5	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.0	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.2	7 pass, 0 fail, 0 skip
`integration/large-io`	skip		no /dev/ublk-control
`verify-sweep`	skip		no /dev/ublk-control
`loop-e2e`	skip		no /dev/ublk-control
`suite`	skip		no /dev/ublk-control

7.2.8-1-defaultupstream 7.2 openSUSE Tumbleweed x86_64 initramfstcg pass 74 0 1 0 2026-10-04T17:43:00+00:00

75 tests, features 0xfffff

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0xfffff","opcode":"ioctl","srcversion":"465AF2E302619F74AAD76FE","library":"features 0xfffff known=true"}
`unit/examples_ublk-loop`	pass	0.4	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.1	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.0	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.3	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.2	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.7	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	105.8	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	76.4	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	0.9
`io/integrity/q1-d64-bs512`	pass	0.9
`io/integrity/q2-d32-bs4096`	pass	1.0
`io/integrity/q4-d128-bs512`	pass	0.9
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.1
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.1
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.2
`io/write-zeroes-large`	pass	0.2
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	1.8
`params/geometry`	pass	0.1
`fs/ext4`	pass	2.0
`fs/xfs`	pass	3.7
`lifecycle/create-close`	pass	0.2
`lifecycle/fixed-id`	pass	0.2
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.4
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.1
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	1.0
`features/integrity-user-copy`	pass	4.0
`features/integrity-need-get-data`	pass	0.9
`features/integrity-threads-per-queue`	pass	2.9
`features/integrity-batch-io`	pass	1.0
`features/integrity-batch-io-user-copy`	pass	2.7
`features/zero-copy`	pass	3.1
`features/batch-io-zero-copy`	pass	1.2
`features/batch-io-close-under-load`	pass	0.3
`features/zero-copy-close-under-load`	pass	0.3
`features/handler-async`	pass	0.7
`features/fua`	pass	0.1
`features/tag-find`	pass	0.1
`features/resize`	pass	0.1
`features/no-partition-scan`	pass	3.1
`features/safe-stop`	pass	0.1
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.6
`recovery/detach-handoff`	pass	0.6
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	pass	0.6
`recovery/batch-detach-handoff`	pass	0.5
`recovery/integrity-kill-and-recover`	pass	0.6
`features/zoned`	pass	0.2
`features/integrity`	pass	0.1
`features/shared-memory`	pass	0.1
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON\|BATCH_IO\|INTEGRITY\|SAFE_STOP_DEV\|NO_AUTO_PART_SCAN\|SHMEM_ZC, known=true)
`features/unprivileged`	pass	0.1

ubuntu#

Kernel Distro Arch Boot Status Pass Fail Skip Error Date

5.15.0-198-genericupstream 5.15 Ubuntu 22.04 GA x86_64 initramfstcg no ublk_drv 7 2 5 0 2026-10-04T16:17:02+00:00

14 tests, no ublk_drv

Test	Result	Seconds	Detail
`probe`	skip		no /dev/ublk-control
`unit/examples_ublk-loop`	pass	0.4	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	5.6	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.4	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	0.9	27 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	fail	0.6	30 pass, 23 fail, 4 skip; failed: TestHotPathDoesNotAllocate TestSetupDropsRejectedOptionalFlags TestProbe TestNopRoundTrips TestMsgRingWakesAnotherRing TestDeferTaskrunSingleIssuer TestRingCloseReleasesMappingsAndFds TestRealRingNewCloseWithPipe TestRealRingSubmitCtrlCmdPipeUnsupported TestRealRingSecondRoundTripSameRing TestSubmitCtrlCmdStagesCallerBuffer TestCtrlTimeoutAndStragglerCQE TestCtrlContextCancelReapsCommand TestCtrlContextCancelGraceExpires TestCloseDuringUnboundedCtrlWait TestCloseWhileWaitForCompletionParked TestRealRingOpenCloseNoRegistration TestSparseBufferTable TestFixedFiles TestProvidedBufferRing TestIoUringCloseReleasesRegistrations TestSubmitIOCmdReturnsFabricatedSuccess TestSubmitIOCmdProductionCallSiteDiscardsResult bench_test.go:42: NewMinimalRing: io_uring_setup entries=8 flags=0xc00: invalid argument core_test.go:117: features 0x7ff core_test.go:129: Flags() = 0x0, want only IORING_SETUP_SUBMIT_ALL
`unit/root`	pass	0.3	45 pass, 0 fail, 0 skip
`unit/test_unit`	fail	0.2	6 pass, 1 fail, 0 skip; failed: TestURingInterface unit_test.go:75: NewRing failed: io_uring_setup entries=32 flags=0xc00: invalid argument
`integration/large-io`	skip		no /dev/ublk-control
`verify-sweep`	skip		no /dev/ublk-control
`loop-e2e`	skip		no /dev/ublk-control
`suite`	skip		no /dev/ublk-control

6.8.0-142-genericupstream 6.8 Ubuntu 24.04 cloud image x86_64 full-vmtcg no ublk_drv 9 0 5 0 2026-10-04T18:07:41+00:00

14 tests, no ublk_drv

Test	Result	Seconds	Detail
`probe`	skip		no /dev/ublk-control
`unit/examples_ublk-loop`	pass	0.6	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	5.1	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.6	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.0	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	1.5	55 pass, 0 fail, 2 skip
`unit/root`	pass	0.5	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	skip		no /dev/ublk-control
`verify-sweep`	skip		no /dev/ublk-control
`loop-e2e`	skip		no /dev/ublk-control
`suite`	skip		no /dev/ublk-control

6.8.0-142-genericupstream 6.8 Ubuntu 24.04 cloud image + linux-modules-extra x86_64 full-vmtcg pass 57 0 18 0 2026-10-04T18:18:15+00:00

75 tests, features 0x1fe

Feature flags: URING_CMD_COMP_IN_TASK NEED_GET_DATA USER_RECOVERY USER_RECOVERY_REISSUE UNPRIVILEGED_DEV CMD_IOCTL_ENCODE USER_COPY ZONED

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x1fe","opcode":"ioctl","srcversion":"3EEA037C46C1E6B583496F4","library":"features 0x1fe known=true"}
`unit/examples_ublk-loop`	pass	0.6	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	5.5	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.0	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	1.5	55 pass, 0 fail, 2 skip
`unit/root`	pass	0.5	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.8	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	122.3	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	42.8	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	1.0
`io/integrity/q2-d32-bs4096`	pass	1.0
`io/integrity/q4-d128-bs512`	pass	0.8
`io/integrity/q4-d16-bs4096-maxio64k`	pass	2.4
`io/integrity-buffered`	pass	1.1
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.2
`io/discard-large`	pass	0.1
`io/write-zeroes`	pass	0.2
`io/write-zeroes-large`	pass	0.2
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	1.9
`params/geometry`	pass	0.1
`fs/ext4`	pass	1.8
`fs/xfs`	pass	2.5
`lifecycle/create-close`	pass	0.2
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.6
`lifecycle/concurrent-create`	pass	0.4
`lifecycle/close-under-load`	pass	0.5
`lifecycle/server-killed`	pass	0.3
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.3
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	skip	0.1	kernel lacks DEL_DEV_ASYNC (6.11+): device 0: ublk DEL_DEV_ASYNC dev 0: operation not supported
`features/probe`	pass
`features/integrity-inline`	pass	0.9
`features/integrity-user-copy`	pass	1.0
`features/integrity-need-get-data`	pass	0.8
`features/integrity-threads-per-queue`	skip		kernel lacks PER_IO_DAEMON (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY\|AUTO_BUF_REG\|BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy-close-under-load`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/handler-async`	pass	0.6
`features/fua`	pass	0.1
`features/tag-find`	pass	0.1
`features/resize`	skip		kernel lacks UPDATE_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.3
`recovery/kill-and-recover`	pass	0.5
`recovery/detach-handoff`	pass	0.6
`recovery/queue-mode`	pass	1.2
`recovery/fail-io-mode`	skip		kernel lacks USER_RECOVERY_FAIL_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zoned`	pass	0.3
`features/integrity`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/unprivileged`	pass	0.1

6.8.0-138-genericupstream 6.8 Ubuntu 22.04 HWE x86_64 initramfstcg pass 57 0 18 0 2026-10-04T17:43:48+00:00

75 tests, features 0x1fe

Feature flags: URING_CMD_COMP_IN_TASK NEED_GET_DATA USER_RECOVERY USER_RECOVERY_REISSUE UNPRIVILEGED_DEV CMD_IOCTL_ENCODE USER_COPY ZONED

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x1fe","opcode":"ioctl","srcversion":"3EEA037C46C1E6B583496F4","library":"features 0x1fe known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.3	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.1	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	1.7	55 pass, 0 fail, 2 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.2	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.7	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	108.9	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	77.8	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	1.0
`io/integrity/q2-d32-bs4096`	pass	0.9
`io/integrity/q4-d128-bs512`	pass	0.8
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.2
`io/boundaries`	pass	0.1
`io/flush`	pass	0.0
`io/no-volatile-cache`	pass	0.0
`io/discard`	pass	0.1
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.0
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.0
`io/multi-device`	pass	1.8
`params/geometry`	pass	0.1
`fs/ext4`	pass	1.5
`fs/xfs`	pass	2.5
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.0
`lifecycle/create-start-stop-close`	pass	0.0
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.2
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.3
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.0
`lifecycle/chaos`	pass	5.1
`lifecycle/list-high-id`	pass	0.0
`lifecycle/delete-async`	skip	0.1	kernel lacks DEL_DEV_ASYNC (6.11+): device 0: ublk DEL_DEV_ASYNC dev 0: operation not supported
`features/probe`	pass
`features/integrity-inline`	pass	1.0
`features/integrity-user-copy`	pass	0.9
`features/integrity-need-get-data`	pass	0.9
`features/integrity-threads-per-queue`	skip		kernel lacks PER_IO_DAEMON (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY\|AUTO_BUF_REG\|BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy-close-under-load`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/handler-async`	pass	0.7
`features/fua`	pass	0.0
`features/tag-find`	pass	0.1
`features/resize`	skip		kernel lacks UPDATE_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.5
`recovery/detach-handoff`	pass	0.5
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	skip		kernel lacks USER_RECOVERY_FAIL_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zoned`	pass	0.2
`features/integrity`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/unprivileged`	pass	0.1

6.8.0-146-genericupstream 6.8 Ubuntu 24.04 GA x86_64 initramfstcg pass 57 0 18 0 2026-10-04T17:47:14+00:00

75 tests, features 0x1fe

Feature flags: URING_CMD_COMP_IN_TASK NEED_GET_DATA USER_RECOVERY USER_RECOVERY_REISSUE UNPRIVILEGED_DEV CMD_IOCTL_ENCODE USER_COPY ZONED

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x1fe","opcode":"ioctl","srcversion":"3EEA037C46C1E6B583496F4","library":"features 0x1fe known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.4	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.2	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	1.6	55 pass, 0 fail, 2 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.8	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	107.8	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	78.3	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	1.0
`io/integrity/q2-d32-bs4096`	pass	1.0
`io/integrity/q4-d128-bs512`	pass	0.9
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.2
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.0
`io/discard`	pass	0.2
`io/discard-large`	pass	0.1
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.0
`io/multi-device`	pass	1.8
`params/geometry`	pass	0.1
`fs/ext4`	pass	1.8
`fs/xfs`	pass	3.1
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.2
`lifecycle/concurrent-create`	pass	0.1
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.1
`lifecycle/restart-after-stop`	pass	0.0
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.0
`lifecycle/delete-async`	skip	0.1	kernel lacks DEL_DEV_ASYNC (6.11+): device 0: ublk DEL_DEV_ASYNC dev 0: operation not supported
`features/probe`	pass
`features/integrity-inline`	pass	3.3
`features/integrity-user-copy`	pass	1.0
`features/integrity-need-get-data`	pass	0.9
`features/integrity-threads-per-queue`	skip		kernel lacks PER_IO_DAEMON (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY\|AUTO_BUF_REG\|BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy-close-under-load`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/handler-async`	pass	0.7
`features/fua`	pass	0.0
`features/tag-find`	pass	0.0
`features/resize`	skip		kernel lacks UPDATE_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.5
`recovery/detach-handoff`	pass	0.5
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	skip		kernel lacks USER_RECOVERY_FAIL_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zoned`	pass	0.3
`features/integrity`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/unprivileged`	pass	0.1

6.11.0-29-genericupstream 6.11 Ubuntu 24.04 HWE 6.11 x86_64 initramfstcg pass 58 0 17 0 2026-10-04T17:48:55+00:00

75 tests, features 0x1fe

Feature flags: URING_CMD_COMP_IN_TASK NEED_GET_DATA USER_RECOVERY USER_RECOVERY_REISSUE UNPRIVILEGED_DEV CMD_IOCTL_ENCODE USER_COPY ZONED

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x1fe","opcode":"ioctl","srcversion":"2C0A96F9DD3BD98632E5CC4","library":"features 0x1fe known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	7.0	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.4	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.1	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.7	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.6	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.8	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	109.1	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	77.1	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	0.9
`io/integrity/q1-d64-bs512`	pass	0.9
`io/integrity/q2-d32-bs4096`	pass	1.1
`io/integrity/q4-d128-bs512`	pass	0.9
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.8
`io/integrity-buffered`	pass	1.1
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.0
`io/discard`	pass	0.1
`io/discard-large`	pass	0.1
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.0
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	1.6
`params/geometry`	pass	0.0
`fs/ext4`	pass	2.2
`fs/xfs`	pass	2.9
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.0
`lifecycle/create-start-stop-close`	pass	0.0
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.3
`lifecycle/concurrent-create`	pass	0.1
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.1
`lifecycle/restart-after-stop`	pass	0.0
`lifecycle/chaos`	pass	5.1
`lifecycle/list-high-id`	pass	0.0
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	3.0
`features/integrity-user-copy`	pass	1.0
`features/integrity-need-get-data`	pass	0.8
`features/integrity-threads-per-queue`	skip		kernel lacks PER_IO_DAEMON (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY\|AUTO_BUF_REG\|BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zero-copy-close-under-load`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/handler-async`	pass	0.6
`features/fua`	pass	0.0
`features/tag-find`	pass	0.0
`features/resize`	skip		kernel lacks UPDATE_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.5
`recovery/detach-handoff`	pass	0.5
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	skip		kernel lacks USER_RECOVERY_FAIL_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/zoned`	pass	0.3
`features/integrity`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED, known=true)
`features/unprivileged`	pass	0.1

6.14.0-37-genericupstream 6.14 Ubuntu 24.04 HWE 6.14 x86_64 initramfstcg pass 59 0 16 0 2026-10-04T17:51:14+00:00

75 tests, features 0x3fe

Feature flags: URING_CMD_COMP_IN_TASK NEED_GET_DATA USER_RECOVERY USER_RECOVERY_REISSUE UNPRIVILEGED_DEV CMD_IOCTL_ENCODE USER_COPY ZONED USER_RECOVERY_FAIL_IO

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x3fe","opcode":"ioctl","srcversion":"6E70DC46A91D65E323A150A","library":"features 0x3fe known=true"}
`unit/examples_ublk-loop`	pass	0.6	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.9	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.2	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.5	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.3	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.2	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.7	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	103.9	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	79.3	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	0.9
`io/integrity/q2-d32-bs4096`	pass	1.1
`io/integrity/q4-d128-bs512`	pass	1.2
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.1
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.1
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.0
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.0
`io/multi-device`	pass	2.0
`params/geometry`	pass	0.1
`fs/ext4`	pass	1.9
`fs/xfs`	pass	3.5
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.0
`lifecycle/create-start-stop-close`	pass	0.0
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.3
`lifecycle/concurrent-create`	pass	0.1
`lifecycle/close-under-load`	pass	0.3
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.0
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.0
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	2.7
`features/integrity-user-copy`	pass	1.0
`features/integrity-need-get-data`	pass	2.8
`features/integrity-threads-per-queue`	skip		kernel lacks PER_IO_DAEMON (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/batch-io-zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY\|AUTO_BUF_REG\|BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/zero-copy-close-under-load`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/handler-async`	pass	0.6
`features/fua`	pass	0.1
`features/tag-find`	pass	0.0
`features/resize`	skip		kernel lacks UPDATE_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.5
`recovery/detach-handoff`	pass	0.5
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/zoned`	pass	0.3
`features/integrity`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/unprivileged`	pass	0.1

6.14.0-37-genericupstream 6.14 Ubuntu 25.04 x86_64 initramfstcg pass 59 0 16 0 2026-10-04T17:56:12+00:00

75 tests, features 0x3fe

Feature flags: URING_CMD_COMP_IN_TASK NEED_GET_DATA USER_RECOVERY USER_RECOVERY_REISSUE UNPRIVILEGED_DEV CMD_IOCTL_ENCODE USER_COPY ZONED USER_RECOVERY_FAIL_IO

Test	Result	Seconds	Detail
`probe`	pass	0.2	{"features":"0x3fe","opcode":"ioctl","srcversion":"6E70DC46A91D65E323A150A","library":"features 0x3fe known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.4	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.2	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.5	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.8	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	108.2	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	79.3	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.1
`io/integrity/q1-d64-bs512`	pass	1.0
`io/integrity/q2-d32-bs4096`	pass	1.0
`io/integrity/q4-d128-bs512`	pass	1.0
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.2
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.1
`io/discard-large`	pass	0.1
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.0
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.0
`io/multi-device`	pass	2.0
`params/geometry`	pass	0.0
`fs/ext4`	pass	2.1
`fs/xfs`	pass	3.2
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.3
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.1
`lifecycle/restart-after-stop`	pass	0.0
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.0
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	0.9
`features/integrity-user-copy`	pass	1.0
`features/integrity-need-get-data`	pass	1.0
`features/integrity-threads-per-queue`	skip		kernel lacks PER_IO_DAEMON (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/batch-io-zero-copy`	skip		kernel lacks SUPPORT_ZERO_COPY\|AUTO_BUF_REG\|BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/zero-copy-close-under-load`	skip		kernel lacks SUPPORT_ZERO_COPY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/handler-async`	pass	0.7
`features/fua`	pass	0.0
`features/tag-find`	pass	0.0
`features/resize`	skip		kernel lacks UPDATE_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.5
`recovery/detach-handoff`	pass	0.5
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/zoned`	pass	0.3
`features/integrity`	skip		kernel lacks INTEGRITY (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO, known=true)
`features/unprivileged`	pass	0.1

6.17.0-42-genericupstream 6.17 Ubuntu 24.04 HWE 6.17 x86_64 initramfstcg pass 63 0 12 0 2026-10-04T17:52:09+00:00

75 tests, features 0x7fff

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x7fff","opcode":"ioctl","srcversion":"8F3FCC0225E19BF890B533B","library":"features 0x7fff known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.5	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.2	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.4	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.2	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.7	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	106.2	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	79.9	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.1
`io/integrity/q1-d64-bs512`	pass	0.9
`io/integrity/q2-d32-bs4096`	pass	1.1
`io/integrity/q4-d128-bs512`	pass	1.1
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.1
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.1
`io/discard-large`	pass	0.1
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	1.9
`params/geometry`	pass	0.1
`fs/ext4`	pass	1.7
`fs/xfs`	pass	2.8
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.0
`lifecycle/create-start-stop-close`	pass	0.0
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.3
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.1
`lifecycle/restart-after-stop`	pass	0.0
`lifecycle/chaos`	pass	5.1
`lifecycle/list-high-id`	pass	0.0
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	1.1
`features/integrity-user-copy`	pass	3.0
`features/integrity-need-get-data`	pass	1.0
`features/integrity-threads-per-queue`	pass	2.9
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zero-copy`	pass	1.1
`features/batch-io-zero-copy`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zero-copy-close-under-load`	pass	0.2
`features/handler-async`	pass	0.6
`features/fua`	pass	0.1
`features/tag-find`	pass	0.0
`features/resize`	pass	0.0
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.6
`recovery/detach-handoff`	pass	0.5
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zoned`	pass	0.1
`features/integrity`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/unprivileged`	pass	0.1

6.17.0-40-genericupstream 6.17 Ubuntu 24.04 HWE 6.17.0-40 (known-bad control) x86_64 initramfstcg fail oops 10 1 0 2 2026-10-04T18:00:54+00:00

13 tests, features 0x7fff

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x7fff","opcode":"ioctl","srcversion":"6A00163FD3030280266148D","library":"features 0x7fff known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.4	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.2	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.3	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.2	7 pass, 0 fail, 0 skip
`integration/large-io`	timeout	310.3	0 pass, 0 fail, 0 skip; killed after 300s; last: /usr/local/go/src/testing/testing.go:1934 +0xea created by testing.(*T).Run in goroutine 19 /usr/local/go/src/testing/testing.go:1997 +0x465
`verify-sweep`	error		guest died (qemu rc=0)
`kernel-log`	fail		6 oops/hang line(s); first: [ 18.002829] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 18.005440] #PF: supervisor read access in kernel mode [ 18.005538] #PF: error_code(0x0000) - not-present page [ 18.005644] PGD 537a067 P4D 5297067 PUD 5393067 PMD 0 [ 18.006348] Oops: Oops: 0000 [#1] SMP NOPTI [ 18.006620] CPU: 1 UID: 0 PID: 416 Comm: iou-wrk-413 Not tainted 6.17.0-40-generic #40~24.04.1-Ubuntu PREEMPT(voluntary) [ 18.006982] Hardware name: QEMU Ubuntu 24.04 PC v2 (i440FX + PIIX, arch_caps fix, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 18.007337] RIP: 0010:ublk_init_queues+0x4e/0x1f0 [ublk_drv] [ 18.008109] Code: 48 c7 c0 40 bc 7c 9a 31 db 48 89 45 d0 45 0f b7 6f 0a 8b 35 c4 cb e7 d9 31 c0 45 8d 65 01 41 c1 e4 06 eb 12 49 8b 4f 50 89 c2 <3b> 1c 91 0f 84 25 01 00 00 83 c0 01 89 c2 48 c7 c7 60 b5 63 99 e8 [ 18.008450] RSP: 0018:ff5b0310806a3bd0 EFLAGS: 00000293 [ 18.008536] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 18.008633] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 [ 18.008721] RBP: ff5b0310806a3c08 R08: 0000000000000000 R09: 0000000000000000 [ 18.008995] R10: 0000000000000000 R11: 0000000000000000 R12:

6.17.0-41-genericupstream 6.17 Ubuntu 25.10 x86_64 initramfstcg pass 63 0 13 0 2026-10-04T17:57:15+00:00

76 tests, features 0x7fff

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x7fff","opcode":"ioctl","srcversion":"8F3FCC0225E19BF890B533B","library":"features 0x7fff known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.2	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.1	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.3	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.5	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.9	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	106.4	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	76.6	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	0.8
`io/integrity/q2-d32-bs4096`	pass	1.0
`io/integrity/q4-d128-bs512`	pass	1.0
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.8
`io/integrity-buffered`	pass	1.1
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.0
`io/discard`	pass	0.1
`io/discard-large`	pass	0.1
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.0
`io/multi-device`	pass	1.7
`params/geometry`	pass	0.1
`fs/ext4`	pass	1.9
`fs/xfs`	pass	3.4
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.0
`lifecycle/create-start-stop-close`	pass	0.0
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.2
`lifecycle/concurrent-create`	pass	0.1
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.0
`lifecycle/chaos`	pass	5.1
`lifecycle/list-high-id`	pass	0.0
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	2.9
`features/integrity-user-copy`	pass	1.1
`features/integrity-need-get-data`	pass	1.0
`features/integrity-threads-per-queue`	pass	0.8
`features/integrity-batch-io`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/integrity-batch-io-user-copy`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zero-copy`	pass	1.1
`features/batch-io-zero-copy`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/batch-io-close-under-load`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zero-copy-close-under-load`	pass	0.2
`features/handler-async`	pass	0.6
`features/fua`	pass	0.0
`features/tag-find`	pass	0.1
`features/resize`	pass	0.0
`features/no-partition-scan`	skip		kernel lacks NO_AUTO_PART_SCAN (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/safe-stop`	skip		kernel lacks SAFE_STOP_DEV (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.5
`recovery/detach-handoff`	pass	0.5
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`recovery/batch-detach-handoff`	skip		kernel lacks BATCH_IO (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`recovery/integrity-kill-and-recover`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/zoned`	pass	0.1
`features/integrity`	skip		kernel lacks INTEGRITY (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON, known=true)
`features/unprivileged`	pass	0.1
`kernel-log/io_uring-counted_by-ubsan`	skip		UBSAN report, likely a __counted_by ordering issue in io_uring io_buffer_register_bvec under ublk zero copy (site/content/guide/kernel-bugs.md#found-by-go-ublks-kernel-matrix); 2 line(s), first: [ 230.726315] UBSAN: array-index-out-of-bounds in io_uring/rsrc.c:989:12

7.0.0-1014-awsupstream 7.0 Ubuntu 24.04 linux-aws x86_64 initramfstcg pass 73 0 2 0 2026-10-04T17:44:56+00:00

75 tests, features 0x7ffff

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x7ffff","opcode":"ioctl","srcversion":"6CF423FB6E75AB0FBD69592","library":"features 0x7ffff known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.9	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.6	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.3	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.6	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.2	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.8	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	110.2	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	81.4	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.1
`io/integrity/q1-d64-bs512`	pass	1.1
`io/integrity/q2-d32-bs4096`	pass	1.1
`io/integrity/q4-d128-bs512`	pass	1.1
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.3
`io/boundaries`	pass	0.1
`io/flush`	pass	0.0
`io/no-volatile-cache`	pass	0.0
`io/discard`	pass	0.2
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.2
`io/write-zeroes-large`	pass	0.2
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	2.5
`params/geometry`	pass	0.1
`fs/ext4`	pass	2.1
`fs/xfs`	pass	3.9
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.2
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	1.1
`features/integrity-user-copy`	pass	1.1
`features/integrity-need-get-data`	pass	1.1
`features/integrity-threads-per-queue`	pass	3.1
`features/integrity-batch-io`	pass	1.0
`features/integrity-batch-io-user-copy`	pass	3.2
`features/zero-copy`	pass	3.7
`features/batch-io-zero-copy`	pass	1.3
`features/batch-io-close-under-load`	pass	0.3
`features/zero-copy-close-under-load`	pass	0.3
`features/handler-async`	pass	0.8
`features/fua`	pass	0.1
`features/tag-find`	pass	0.1
`features/resize`	pass	0.1
`features/no-partition-scan`	pass	3.1
`features/safe-stop`	pass	0.3
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.6
`recovery/detach-handoff`	pass	0.6
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	pass	0.5
`recovery/batch-detach-handoff`	pass	0.6
`recovery/integrity-kill-and-recover`	pass	0.6
`features/zoned`	pass	0.1
`features/integrity`	pass	0.1
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON\|BATCH_IO\|INTEGRITY\|SAFE_STOP_DEV\|NO_AUTO_PART_SCAN, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON\|BATCH_IO\|INTEGRITY\|SAFE_STOP_DEV\|NO_AUTO_PART_SCAN, known=true)
`features/unprivileged`	pass	0.1

7.0.0-1017-azureupstream 7.0 Ubuntu 24.04 linux-azure x86_64 initramfstcg pass 73 0 2 0 2026-10-04T17:47:19+00:00

75 tests, features 0x7ffff

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x7ffff","opcode":"ioctl","srcversion":"6CF423FB6E75AB0FBD69592","library":"features 0x7ffff known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.6	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.2	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.3	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.2	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.7	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	109.1	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	81.3	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	1.0
`io/integrity/q2-d32-bs4096`	pass	1.2
`io/integrity/q4-d128-bs512`	pass	1.2
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.2
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.0
`io/discard`	pass	0.1
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.2
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	2.0
`params/geometry`	pass	0.0
`fs/ext4`	pass	2.1
`fs/xfs`	pass	4.1
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.0
`lifecycle/create-start-stop-close`	pass	0.0
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.3
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.0
`lifecycle/chaos`	pass	5.1
`lifecycle/list-high-id`	pass	0.0
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	0.9
`features/integrity-user-copy`	pass	1.1
`features/integrity-need-get-data`	pass	3.0
`features/integrity-threads-per-queue`	pass	1.1
`features/integrity-batch-io`	pass	1.7
`features/integrity-batch-io-user-copy`	pass	1.2
`features/zero-copy`	pass	1.2
`features/batch-io-zero-copy`	pass	3.5
`features/batch-io-close-under-load`	pass	0.3
`features/zero-copy-close-under-load`	pass	0.2
`features/handler-async`	pass	0.7
`features/fua`	pass	0.0
`features/tag-find`	pass	0.0
`features/resize`	pass	0.1
`features/no-partition-scan`	pass	3.1
`features/safe-stop`	pass	0.0
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.5
`recovery/detach-handoff`	pass	0.4
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	pass	0.5
`recovery/batch-detach-handoff`	pass	0.8
`recovery/integrity-kill-and-recover`	pass	0.5
`features/zoned`	pass	0.2
`features/integrity`	pass	0.0
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON\|BATCH_IO\|INTEGRITY\|SAFE_STOP_DEV\|NO_AUTO_PART_SCAN, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON\|BATCH_IO\|INTEGRITY\|SAFE_STOP_DEV\|NO_AUTO_PART_SCAN, known=true)
`features/unprivileged`	pass	0.1

7.0.0-1014-gcpupstream 7.0 Ubuntu 24.04 linux-gcp x86_64 initramfstcg pass 73 0 2 0 2026-10-04T17:48:05+00:00

75 tests, features 0x7ffff

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x7ffff","opcode":"ioctl","srcversion":"6CF423FB6E75AB0FBD69592","library":"features 0x7ffff known=true"}
`unit/examples_ublk-loop`	pass	0.6	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.8	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.3	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.3	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.5	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.8	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	110.7	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	79.0	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	0.9
`io/integrity/q2-d32-bs4096`	pass	1.1
`io/integrity/q4-d128-bs512`	pass	1.3
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.2
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.0
`io/discard`	pass	0.1
`io/discard-large`	pass	0.1
`io/write-zeroes`	pass	0.2
`io/write-zeroes-large`	pass	0.2
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	2.0
`params/geometry`	pass	0.0
`fs/ext4`	pass	2.1
`fs/xfs`	pass	3.1
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.0
`lifecycle/create-start-stop-close`	pass	0.0
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.2
`lifecycle/concurrent-create`	pass	0.1
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.1
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.0
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	2.8
`features/integrity-user-copy`	pass	1.0
`features/integrity-need-get-data`	pass	0.9
`features/integrity-threads-per-queue`	pass	0.9
`features/integrity-batch-io`	pass	0.9
`features/integrity-batch-io-user-copy`	pass	1.0
`features/zero-copy`	pass	2.7
`features/batch-io-zero-copy`	pass	3.1
`features/batch-io-close-under-load`	pass	0.2
`features/zero-copy-close-under-load`	pass	0.2
`features/handler-async`	pass	0.7
`features/fua`	pass	0.0
`features/tag-find`	pass	0.0
`features/resize`	pass	0.0
`features/no-partition-scan`	pass	3.1
`features/safe-stop`	pass	0.1
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.5
`recovery/detach-handoff`	pass	0.4
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	pass	0.5
`recovery/batch-detach-handoff`	pass	0.5
`recovery/integrity-kill-and-recover`	pass	0.5
`features/zoned`	pass	0.1
`features/integrity`	pass	0.0
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON\|BATCH_IO\|INTEGRITY\|SAFE_STOP_DEV\|NO_AUTO_PART_SCAN, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON\|BATCH_IO\|INTEGRITY\|SAFE_STOP_DEV\|NO_AUTO_PART_SCAN, known=true)
`features/unprivileged`	pass	0.1

7.0.0-38-genericupstream 7.0 Ubuntu 24.04 HWE x86_64 initramfstcg pass 73 0 2 0 2026-10-04T17:55:44+00:00

75 tests, features 0x7ffff

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x7ffff","opcode":"ioctl","srcversion":"6CF423FB6E75AB0FBD69592","library":"features 0x7ffff known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.7	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.1	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.3	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.3	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.8	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	107.5	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	81.2	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	1.0
`io/integrity/q2-d32-bs4096`	pass	1.2
`io/integrity/q4-d128-bs512`	pass	1.4
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.1
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.2
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.2
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.1
`io/multi-device`	pass	2.2
`params/geometry`	pass	0.1
`fs/ext4`	pass	2.4
`fs/xfs`	pass	3.7
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.1
`lifecycle/create-start-stop-close`	pass	0.0
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.3
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.0
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.1
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	3.2
`features/integrity-user-copy`	pass	3.1
`features/integrity-need-get-data`	pass	3.0
`features/integrity-threads-per-queue`	pass	3.0
`features/integrity-batch-io`	pass	2.8
`features/integrity-batch-io-user-copy`	pass	1.1
`features/zero-copy`	pass	1.2
`features/batch-io-zero-copy`	pass	1.2
`features/batch-io-close-under-load`	pass	0.2
`features/zero-copy-close-under-load`	pass	0.2
`features/handler-async`	pass	0.7
`features/fua`	pass	0.1
`features/tag-find`	pass	0.1
`features/resize`	pass	0.1
`features/no-partition-scan`	pass	3.1
`features/safe-stop`	pass	0.1
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.6
`recovery/detach-handoff`	pass	0.6
`recovery/queue-mode`	pass	1.5
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	pass	0.6
`recovery/batch-detach-handoff`	pass	0.6
`recovery/integrity-kill-and-recover`	pass	0.6
`features/zoned`	pass	0.1
`features/integrity`	pass	0.1
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON\|BATCH_IO\|INTEGRITY\|SAFE_STOP_DEV\|NO_AUTO_PART_SCAN, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON\|BATCH_IO\|INTEGRITY\|SAFE_STOP_DEV\|NO_AUTO_PART_SCAN, known=true)
`features/unprivileged`	pass	0.1

7.0.0-38-genericupstream 7.0 Ubuntu 24.04 HWE 7.0.0-38 (Slide-tested) x86_64 initramfstcg pass 73 0 2 0 2026-10-04T17:53:15+00:00

75 tests, features 0x7ffff

Test	Result	Seconds	Detail
`probe`	pass	0.3	{"features":"0x7ffff","opcode":"ioctl","srcversion":"6CF423FB6E75AB0FBD69592","library":"features 0x7ffff known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.0	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.3	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.2	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.5	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.2	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.8	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	107.7	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	80.0	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	1.0
`io/integrity/q1-d64-bs512`	pass	1.0
`io/integrity/q2-d32-bs4096`	pass	1.2
`io/integrity/q4-d128-bs512`	pass	1.2
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.9
`io/integrity-buffered`	pass	1.2
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.1
`io/discard`	pass	0.2
`io/discard-large`	pass	0.2
`io/write-zeroes`	pass	0.2
`io/write-zeroes-large`	pass	0.2
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.1
`io/readonly`	pass	0.0
`io/multi-device`	pass	2.2
`params/geometry`	pass	0.0
`fs/ext4`	pass	2.2
`fs/xfs`	pass	3.9
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.0
`lifecycle/create-start-stop-close`	pass	0.1
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.3
`lifecycle/concurrent-create`	pass	0.2
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.0
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.0
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	1.0
`features/integrity-user-copy`	pass	1.1
`features/integrity-need-get-data`	pass	1.0
`features/integrity-threads-per-queue`	pass	3.0
`features/integrity-batch-io`	pass	0.9
`features/integrity-batch-io-user-copy`	pass	2.9
`features/zero-copy`	pass	3.5
`features/batch-io-zero-copy`	pass	1.3
`features/batch-io-close-under-load`	pass	0.2
`features/zero-copy-close-under-load`	pass	0.3
`features/handler-async`	pass	0.8
`features/fua`	pass	0.0
`features/tag-find`	pass	0.0
`features/resize`	pass	0.0
`features/no-partition-scan`	pass	3.1
`features/safe-stop`	pass	0.1
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.6
`recovery/detach-handoff`	pass	0.5
`recovery/queue-mode`	pass	1.2
`recovery/fail-io-mode`	pass	0.2
`recovery/batch-kill-and-recover`	pass	0.6
`recovery/batch-detach-handoff`	pass	0.6
`recovery/integrity-kill-and-recover`	pass	0.6
`features/zoned`	pass	0.1
`features/integrity`	pass	0.1
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON\|BATCH_IO\|INTEGRITY\|SAFE_STOP_DEV\|NO_AUTO_PART_SCAN, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON\|BATCH_IO\|INTEGRITY\|SAFE_STOP_DEV\|NO_AUTO_PART_SCAN, known=true)
`features/unprivileged`	pass	0.1

7.0.0-38-genericupstream 7.0 Ubuntu 26.04 x86_64 initramfstcg pass 73 0 3 0 2026-10-04T17:59:42+00:00

76 tests, features 0x7ffff

Test	Result	Seconds	Detail
`probe`	pass	0.2	{"features":"0x7ffff","opcode":"ioctl","srcversion":"6CF423FB6E75AB0FBD69592","library":"features 0x7ffff known=true"}
`unit/examples_ublk-loop`	pass	0.5	10 pass, 0 fail, 0 skip
`unit/examples_ublk-mem`	pass	6.3	20 pass, 0 fail, 0 skip
`unit/internal_ctrl`	pass	0.5	44 pass, 0 fail, 0 skip
`unit/internal_logging`	pass	0.2	4 pass, 0 fail, 0 skip
`unit/internal_queue`	pass	1.2	28 pass, 0 fail, 0 skip
`unit/internal_uapi`	pass	0.6	37 pass, 0 fail, 0 skip
`unit/internal_uring`	pass	2.5	57 pass, 0 fail, 0 skip
`unit/root`	pass	0.4	45 pass, 0 fail, 0 skip
`unit/test_unit`	pass	0.2	7 pass, 0 fail, 0 skip
`integration/large-io`	pass	0.7	1 pass, 0 fail, 0 skip
`verify-sweep`	pass	103.3	integrity sweep: PASS=24 FAIL=0
`loop-e2e`	pass	70.7	PASS=14 FAIL=0
`io/integrity/q1-d1-bs512`	pass	0.9
`io/integrity/q1-d64-bs512`	pass	0.8
`io/integrity/q2-d32-bs4096`	pass	1.0
`io/integrity/q4-d128-bs512`	pass	0.9
`io/integrity/q4-d16-bs4096-maxio64k`	pass	0.8
`io/integrity-buffered`	pass	1.0
`io/boundaries`	pass	0.1
`io/flush`	pass	0.1
`io/no-volatile-cache`	pass	0.0
`io/discard`	pass	0.1
`io/discard-large`	pass	0.1
`io/write-zeroes`	pass	0.1
`io/write-zeroes-large`	pass	0.1
`io/no-discard-advertised`	pass	0.1
`io/error-propagation`	pass	0.2
`io/readonly`	pass	0.1
`io/multi-device`	pass	1.6
`params/geometry`	pass	0.1
`fs/ext4`	pass	1.6
`fs/xfs`	pass	3.3
`lifecycle/create-close`	pass	0.1
`lifecycle/fixed-id`	pass	0.0
`lifecycle/create-start-stop-close`	pass	0.0
`lifecycle/ctx-cancel-idle`	pass	0.3
`lifecycle/churn-leaks`	pass	0.2
`lifecycle/concurrent-create`	pass	0.1
`lifecycle/close-under-load`	pass	0.2
`lifecycle/server-killed`	pass	0.2
`lifecycle/restart-after-stop`	pass	0.0
`lifecycle/chaos`	pass	5.2
`lifecycle/list-high-id`	pass	0.0
`lifecycle/delete-async`	pass	0.1
`features/probe`	pass
`features/integrity-inline`	pass	2.6
`features/integrity-user-copy`	pass	0.9
`features/integrity-need-get-data`	pass	1.0
`features/integrity-threads-per-queue`	pass	0.8
`features/integrity-batch-io`	pass	0.9
`features/integrity-batch-io-user-copy`	pass	0.9
`features/zero-copy`	pass	1.0
`features/batch-io-zero-copy`	pass	2.8
`features/batch-io-close-under-load`	pass	0.2
`features/zero-copy-close-under-load`	pass	0.2
`features/handler-async`	pass	0.6
`features/fua`	pass	0.0
`features/tag-find`	pass	0.0
`features/resize`	pass	0.1
`features/no-partition-scan`	pass	3.1
`features/safe-stop`	pass	0.0
`lifecycle/ctx-cancel-under-load`	pass	0.2
`recovery/kill-and-recover`	pass	0.6
`recovery/detach-handoff`	pass	0.5
`recovery/queue-mode`	pass	1.1
`recovery/fail-io-mode`	pass	0.1
`recovery/batch-kill-and-recover`	pass	0.5
`recovery/batch-detach-handoff`	pass	0.5
`recovery/integrity-kill-and-recover`	pass	0.5
`features/zoned`	pass	0.2
`features/integrity`	pass	0.0
`features/shared-memory`	skip		kernel lacks SHMEM_ZC (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON\|BATCH_IO\|INTEGRITY\|SAFE_STOP_DEV\|NO_AUTO_PART_SCAN, known=true)
`features/io-desc-size`	skip		kernel lacks IO_DESC_SIZE (reports SUPPORT_ZERO_COPY\|URING_CMD_COMP_IN_TASK\|NEED_GET_DATA\|USER_RECOVERY\|USER_RECOVERY_REISSUE\|UNPRIVILEGED_DEV\|CMD_IOCTL_ENCODE\|USER_COPY\|ZONED\|USER_RECOVERY_FAIL_IO\|UPDATE_SIZE\|AUTO_BUF_REG\|QUIESCE\|PER_IO_DAEMON\|BUF_REG_OFF_DAEMON\|BATCH_IO\|INTEGRITY\|SAFE_STOP_DEV\|NO_AUTO_PART_SCAN, known=true)
`features/unprivileged`	pass	0.1
`kernel-log/io_uring-counted_by-ubsan`	skip		UBSAN report, likely a __counted_by ordering issue in io_uring io_buffer_register_bvec under ublk zero copy (site/content/guide/kernel-bugs.md#found-by-go-ublks-kernel-matrix); 2 line(s), first: [ 221.700620] UBSAN: array-index-out-of-bounds in io_uring/rsrc.c:980:12

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