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[Po-Hsu Lin <1836694@xxxxxxxxxxxxxxxxxx>]

** Tags removed: ubuntu-ltp
** Tags added: ubuntu-ltp-controllers

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https://bugs.launchpad.net/bugs/1836694

Title:
  memcg_test_3 from controllers in LTP timeout with Bionic/Focal/Hirsute
  (arm64)

Status in ubuntu-kernel-tests:
  Confirmed
Status in linux package in Ubuntu:
  Confirmed
Status in linux source package in Bionic:
  Confirmed
Status in linux source package in Focal:
  Confirmed
Status in linux source package in Hirsute:
  Won't Fix
Status in linux source package in Impish:
  Won't Fix

Bug description:
  This failure could be found in the LTP test suite on a Moonshot ARM64
  node with B-4.15, but sometimes it will pass if you try to run it
  manually. (Sometimes not.)

  <<<test_start>>>
  tag=memcg_test_3 stime=1563249678
  cmdline="memcg_test_3"
  contacts=""
  analysis=exit
  <<<test_output>>>
  incrementing stop
  tst_test.c:1100: INFO: Timeout per run is 0h 05m 00s
  Test timeouted, sending SIGKILL!
  tst_test.c:1140: INFO: If you are running on slow machine, try exporting LTP_TIMEOUT_MUL > 1
  tst_test.c:1141: BROK: Test killed! (timeout?)

  Summary:
  passed   0
  failed   0
  skipped  0
  warnings 0
  tst_tmpdir.c:330: WARN: tst_rmdir: rmobj(/tmp/ltp-nJ05WiJDR1/06EzUc) failed: unlink(/tmp/ltp-nJ05WiJDR1/06EzUc/memcg/cgroup.clone_children) failed; errno=1: EPERM
  <<<execution_status>>>

  
  When it fails, the attempt to remove files will fail, and most of the cgroup_fj_* test will fail:
    * cgroup_fj_function_memory
    * cgroup_fj_stress_memory_10_3_each
    * cgroup_fj_stress_memory_10_3_none
    * cgroup_fj_stress_memory_10_3_one
    * cgroup_fj_stress_memory_1_200_each
    * cgroup_fj_stress_memory_1_200_none
    * cgroup_fj_stress_memory_1_200_one
    * cgroup_fj_stress_memory_200_1_each
    * cgroup_fj_stress_memory_200_1_none
    * cgroup_fj_stress_memory_200_1_one
    * cgroup_fj_stress_memory_2_2_each
    * cgroup_fj_stress_memory_2_2_none
    * cgroup_fj_stress_memory_2_2_one
    * cgroup_fj_stress_memory_2_9_each
    * cgroup_fj_stress_memory_2_9_none
    * cgroup_fj_stress_memory_2_9_one
    * cgroup_fj_stress_memory_3_3_each
    * cgroup_fj_stress_memory_3_3_none
    * cgroup_fj_stress_memory_3_3_one
    * cgroup_fj_stress_memory_4_4_each
    * cgroup_fj_stress_memory_4_4_none
    * cgroup_fj_stress_memory_4_4_one

  Steps to run this:
    git clone --depth=1 https://github.com/linux-test-project/ltp.git
    cd ltp; make autotools; ./configure; make; sudo make install
    echo "memcg_test_3    memcg_test_3" > /tmp/jobs
    sudo /opt/ltp/runltp -f /tmp/jobs

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: linux-image-4.15.0-54-generic 4.15.0-54.58
  ProcVersionSignature: User Name 4.15.0-54.58-generic 4.15.18
  Uname: Linux 4.15.0-54-generic aarch64
  AlsaDevices:
   total 0
   crw-rw---- 1 root audio 116,  1 Jul 16 03:46 seq
   crw-rw---- 1 root audio 116, 33 Jul 16 03:46 timer
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
  ApportVersion: 2.20.9-0ubuntu7.6
  Architecture: arm64
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord'
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  Date: Tue Jul 16 04:16:14 2019
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
  Lsusb: Error: command ['lsusb'] failed with exit code 1:
  PciMultimedia:
   
  ProcFB:
   
  ProcKernelCmdLine: console=ttyS0,9600n8r ro
  RelatedPackageVersions:
   linux-restricted-modules-4.15.0-54-generic N/A
   linux-backports-modules-4.15.0-54-generic  N/A
   linux-firmware                             1.173.8
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)

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