[Bug 1953005] [NEW] systemd autopkgtest failures on jammy 5.15 due to cgroup v2 ABI change

[Andrea Righi]

Public bug reported:

I'm getting the following errors when running systemd autopkgtest on the
latest Jammy 5.15 Ubuntu kernel:

Received SIGCHLD from PID 2674 (sh).
Child 2674 (sh) died (code=killed, status=13/PIPE)
exec-ignoresigpipe-no.service: Failed to read oom_kill field of memory.events cgroup attribute: No such file or directory
exec-ignoresigpipe-no.service: Child 2674 belongs to exec-ignoresigpipe-no.service.
exec-ignoresigpipe-no.service: Main process exited, code=killed, status=13/PIPE
exec-ignoresigpipe-no.service: Failed with result 'signal'.
exec-ignoresigpipe-no.service: Service will not restart (restart setting)
exec-ignoresigpipe-no.service: Changed start -> failed
exec-ignoresigpipe-no.service: Unit entered failed state.
Testing without inaccessible, skipping test_exec_inaccessiblepaths
exec-ioschedulingclass-none.service: Passing 0 fds to service
exec-ioschedulingclass-none.service: About to execute /bin/sh -x -c 'c=$$(LC_ALL=C ionice); test "$${c%:*}" = "none"'
exec-ioschedulingclass-none.service: Forked /bin/sh as 2675
exec-ioschedulingclass-none.service: Changed dead -> start
PR_SET_MM_ARG_START failed: Operation not permitted

...

FAIL: test-execute

The fact that is failing to read memory.events makes me think that the
expected cgroup wasn't created correctly. I don't see any potential ABI
change in the kernel. I need to investigate more.

** Affects: systemd (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1953005

Title:
  systemd autopkgtest failures on jammy 5.15 due to cgroup v2 ABI change

Status in systemd package in Ubuntu:
  New

Bug description:
  I'm getting the following errors when running systemd autopkgtest on
  the latest Jammy 5.15 Ubuntu kernel:

  Received SIGCHLD from PID 2674 (sh).
  Child 2674 (sh) died (code=killed, status=13/PIPE)
  exec-ignoresigpipe-no.service: Failed to read oom_kill field of memory.events cgroup attribute: No such file or directory
  exec-ignoresigpipe-no.service: Child 2674 belongs to exec-ignoresigpipe-no.service.
  exec-ignoresigpipe-no.service: Main process exited, code=killed, status=13/PIPE
  exec-ignoresigpipe-no.service: Failed with result 'signal'.
  exec-ignoresigpipe-no.service: Service will not restart (restart setting)
  exec-ignoresigpipe-no.service: Changed start -> failed
  exec-ignoresigpipe-no.service: Unit entered failed state.
  Testing without inaccessible, skipping test_exec_inaccessiblepaths
  exec-ioschedulingclass-none.service: Passing 0 fds to service
  exec-ioschedulingclass-none.service: About to execute /bin/sh -x -c 'c=$$(LC_ALL=C ionice); test "$${c%:*}" = "none"'
  exec-ioschedulingclass-none.service: Forked /bin/sh as 2675
  exec-ioschedulingclass-none.service: Changed dead -> start
  PR_SET_MM_ARG_START failed: Operation not permitted

  ...

  FAIL: test-execute

  The fact that is failing to read memory.events makes me think that the
  expected cgroup wasn't created correctly. I don't see any potential
  ABI change in the kernel. I need to investigate more.

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