canonical-ubuntu-qa team mailing list archive

[Po-Hsu Lin <1848473@xxxxxxxxxxxxxxxxxx>]

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

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https://bugs.launchpad.net/bugs/1848473

Title:
  cgroup_fj_stress_* in controllers from ubuntu_ltp failed with dir
  creation / fork on B-KVM

Status in ubuntu-kernel-tests:
  Fix Released
Status in linux-kvm package in Ubuntu:
  Invalid
Status in linux-kvm source package in Bionic:
  Invalid

Bug description:
  It looks like the test failed with cannot fork, and the following test
  will failed with mkdir.

  Take this one for example:
   tag=cgroup_fj_stress_perf_event_2_9_each stime=1571098406 dur=7 exit=exited stat=2 core=no cu=451 cs=280
   ...
   ...
   cgroup_fj_stress_perf_event_2_9_each 1 TINFO: Attaching task 1326 to /sys/fs/cgroup/perf_event/ltp/2/1/1/2/1/2/1
   cgroup_fj_stress_perf_event_2_9_each 1 TINFO: Attaching task 1329 to /sys/fs/cgroup/perf_event/ltp/2/1/1/2/1/2/1/1
   /opt/ltp/testcases/bin/cgroup_fj_stress.sh: 53: /opt/ltp/testcases/bin/cgroup_fj_stress.sh: Cannot fork
   tag=cgroup_fj_stress_perf_event_10_3_each stime=1571098419 dur=2 exit=exited stat=2 core=no cu=134 cs=84
   startup='Tue Oct 15 00:13:39 2019'
   cgroup_fj_stress_perf_event_10_3_each 1 TINFO: Subsystem perf_event is mounted at /sys/fs/cgroup/perf_event
   cgroup_fj_stress_perf_event_10_3_each 1 TINFO: Creating subgroups ...
   mkdir: cannot create directory ‘/sys/fs/cgroup/perf_event/ltp’: File exists
   cgroup_fj_stress_perf_event_10_3_each 1 TBROK: mkdir /sys/fs/cgroup/perf_event/ltp failed
   cgroup_fj_stress_perf_event_10_3_each 1 TINFO: Removing all ltp subgroups...

  
  Failed test cases sorted alphabetically:
  cgroup_fj_stress_blkio_10_3_each                -mkdir
  cgroup_fj_stress_blkio_2_9_each                 -cannot fork
  cgroup_fj_stress_cpu_10_3_each                  -mkdir
  cgroup_fj_stress_cpu_2_9_each                   -cannot fork
  cgroup_fj_stress_cpuacct_10_3_each              -mkdir
  cgroup_fj_stress_cpuacct_2_9_each               -cannot fork
  cgroup_fj_stress_cpuset_10_3_each               -mkdir
  cgroup_fj_stress_cpuset_2_9_each                -cannot fork
  cgroup_fj_stress_devices_10_3_each              -mkdir
  cgroup_fj_stress_devices_2_9_each               -cannot fork
  cgroup_fj_stress_freezer_10_3_each              -mkdir
  cgroup_fj_stress_freezer_2_9_each               -cannot fork
  cgroup_fj_stress_hugetlb_10_3_each              -mkdir
  cgroup_fj_stress_hugetlb_2_9_each               -cannot fork
  cgroup_fj_stress_memory_10_3_each               -mkdir
  cgroup_fj_stress_memory_2_9_each                -cannot fork
  cgroup_fj_stress_net_cls_10_3_each              -mkdir
  cgroup_fj_stress_net_cls_2_9_each               -cannot fork
  cgroup_fj_stress_net_prio_10_3_each             -mkdir
  cgroup_fj_stress_net_prio_2_9_each              -cannot fork
  cgroup_fj_stress_perf_event_10_3_each           -mkdir
  cgroup_fj_stress_perf_event_2_9_each            -cannot fork

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