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[Po-Hsu Lin <1985879@xxxxxxxxxxxxxxxxxx>]

This is affecting X-s390x as well.

** Tags added: sru-20230612

** Tags added: 4.4 xenial

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https://bugs.launchpad.net/bugs/1985879

Title:
  cpuset_regression_test from ubuntu_ltp_controllers failed on B/F-s390x

Status in ubuntu-kernel-tests:
  New

Bug description:
  Issue found on B-4.15.0-192.203 s390x zVM and LPAR

  It looks like a new failure after updating our LTP fork in 20220811
  [1]

  Test log:
  INFO: Test start time: Fri 12 Aug 04:13:14 BST 2022
  COMMAND:    /opt/ltp/bin/ltp-pan -q  -e -S   -a 17829     -n 17829  -f /tmp/ltp-QgtTUiO3dI/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.......
  cpuset_regression_test 1 TINFO: timeout per run is 0h 5m 0s
  cpuset_regression_test 1 TINFO: test starts with cgroup version 1
  sh: echo: I/O error
  cpuset_regression_test 1 TFAIL: 'echo 1 > /sys/fs/cgroup/cpuset/testdir/cpuset.cpu_exclusive' failed
  cpuset_regression_test 1 TINFO: AppArmor enabled, this may affect test results
  cpuset_regression_test 1 TINFO: it can be disabled with TST_DISABLE_APPARMOR=1 (requires super/root)
  cpuset_regression_test 1 TINFO: loaded AppArmor profiles: none

  Summary:
  passed   0
  failed   1
  broken   0
  skipped  0
  warnings 0
  INFO: ltp-pan reported some tests FAIL
  LTP Version: 20220527
  INFO: Test end time: Fri 12 Aug 04:13:14 BST 2022

  Next is to run a bisect for this.

  [1] https://lists.ubuntu.com/archives/kernel-
  team/2022-August/132526.html

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