Public bug reported:
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
** Affects: ubuntu-kernel-tests
Importance: Undecided
Status: New
** Affects: linux-kvm (Ubuntu)
Importance: Undecided
Status: New
** Affects: linux-kvm (Ubuntu Bionic)
Importance: Undecided
Status: New
** Tags: 4.15 bionic linux-kvm sru-20190930 ubuntu-ltp
** Tags added: 4.15 bionic linux-kvm ubuntu-ltp
** Also affects: linux-kvm (Ubuntu)
Importance: Undecided
Status: New
** Tags added: sru-20190930
** Also affects: linux-kvm (Ubuntu Bionic)
Importance: Undecided
Status: New
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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
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