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apport-collect 1953345

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This change has been made by an automated script, maintained by the
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** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1953345

Title:
  memcg is disabled in v5.15 RT kernel (known issue)

Status in ubuntu-kernel-tests:
  New
Status in linux package in Ubuntu:
  Incomplete
Status in linux source package in Jammy:
  Incomplete

Bug description:
  From v5.15.2-rt20 announcement:
    Known issues:
    - The "Memory controller" (CONFIG_MEMCG) has been disabled.

  This might be the cause of ubuntu_ltp_controllers failure - 
ubuntu_ltp_controllers.pids_1_100:
  ##########
  COMMAND: /opt/ltp/bin/ltp-pan -q -e -S -a 466487 -n 466487 -f 
/tmp/ltp-DbBcUelSWj/alltests -l /dev/null -C /dev/null -T /dev/null
  LOG File: /dev/null
  FAILED COMMAND File: /dev/null
  TCONF COMMAND File: /dev/null
  Running tests.......
  pids 1 TINFO: timeout per run is 0h 5m 0s
  mount: /dev/cgroup: none already mounted on /sys/fs/bpf.
  pids 1 TBROK: mount -t cgroup -o pids none /dev/cgroup failed
  pids 1 TINFO: removing created directories
  rmdir: failed to remove '/dev/cgroup/ltp_pids_1': No such file or directory
  pids 1 TINFO: Umounting pids
  umount: /dev/cgroup: not mounted.
  pids 1 TINFO: AppArmor enabled, this may affect test results
  pids 1 TINFO: it can be disabled with TST_DISABLE_APPARMOR=1 (requires 
super/root)
  pids 1 TINFO: loaded AppArmor profiles: none
  ##########

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