Hi Mickaël and Günther,
I received the following report about a failing landlock selftest from
the 0day bot.
On Mon, May 11, 2026 at 10:15:00PM +0800, kernel test robot wrote:
> kernel test robot noticed
> "kernel-selftests.landlock.audit_test.audit.tsync_override_log_subdomains_off.fail"
> on:
>
> commit: 465b05bae5ac553c13315681c1490dc565337771 ("selftests: harness:
> Restore order of test functions")
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
>
>
> in testcase: kernel-selftests
> version: kernel-selftests-x86_64-9f2693489ef8-1_20260201
> with following parameters:
>
> group: landlock
>
> config: x86_64-rhel-9.4-kselftests
> compiler: gcc-14
> test machine: 16 threads Intel(R) Core(TM) i7-13620H (Raptor Lake) with 32G
> memory
>
> (please refer to attached dmesg/kmsg for entire log/backtrace)
>
> If you fix the issue in a separate patch/commit (i.e. not just a new version
> of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <[email protected]>
> | Closes: https://lore.kernel.org/oe-lkp/[email protected]
I was unable to run the landlock selftests myself, on my machines they are
failing at runtime with all kinds of colorful errors. Are the requirements
explained somewhere?
> # # RUN audit.tsync_override_log_subdomains_off ...
> # # audit_test.c:591:tsync_override_log_subdomains_off:Expected 0 (0) ==
> matches_log_signal(_metadata, self->audit_fd, child_data.parent_pid, NULL)
> (-11)
This error number means "EAGAIN 11 Resource temporarily unavailable",
so it could be a temporary error.
Can you reproduce this issue? Is it really dependent on my patch as
blamed above? If so, does the selftest rely on the previous, incorrect order?
> # # tsync_override_log_subdomains_off: Test failed
> # # FAIL audit.tsync_override_log_subdomains_off
> # not ok 5 audit.tsync_override_log_subdomains_off
Thomas
