Issue found on specific instance i3en.24xlarge It looks like this is a test case issue caused by cgroup_fj_function_memory test, which failed with: startup='Sat Oct 3 01:23:54 2020' cgroup_fj_function2_memory 1 TINFO: Subsystem memory is mounted at /sys/fs/cgroup/memory /dev/memcg mkdir: cannot create directory ‘/sys/fs/cgroup/memory’: File exists cgroup_fj_function2_memory 1 TBROK: mkdir /sys/fs/cgroup/memory /dev/memcg/ltp failed cgroup_fj_function2_memory 1 TINFO: Removing all ltp subgroups... find: ‘/sys/fs/cgroup/memory\n/dev/memcg/ltp/’: No such file or directory tag=cgroup_fj_function_memory stime=1601688234 dur=0 exit=exited stat=2 core=no cu=1 cs=1 Other cgroup_fj_stress_memory* tests failed with: startup='Sat Oct 3 01:27:01 2020' cgroup_fj_stress_memory_2_2_none 1 TINFO: Subsystem memory is mounted at /sys/fs/cgroup/memory /dev/memcg cgroup_fj_stress_memory_2_2_none 1 TINFO: Creating subgroups ... mkdir: cannot create directory ‘/sys/fs/cgroup/memory’: File exists mkdir: cannot create directory ‘/dev/memcg/ltp’: File exists cgroup_fj_stress_memory_2_2_none 1 TBROK: mkdir /sys/fs/cgroup/memory /dev/memcg/ltp failed cgroup_fj_stress_memory_2_2_none 1 TINFO: Removing all ltp subgroups... find: ‘/sys/fs/cgroup/memory\n/dev/memcg/ltp/’: No such file or directory tag=cgroup_fj_stress_memory_2_2_none stime=1601688421 dur=0 exit=exited stat=2 core=no cu=1 cs=1 startup='Sat Oct 3 01:27:01 2020' cgroup_fj_stress_memory_3_3_none 1 TINFO: Subsystem memory is mounted at /sys/fs/cgroup/memory /dev/memcg cgroup_fj_stress_memory_3_3_none 1 TINFO: Creating subgroups ... mkdir: cannot create directory ‘/sys/fs/cgroup/memory’: File exists mkdir: cannot create directory ‘/dev/memcg/ltp’: File exists cgroup_fj_stress_memory_3_3_none 1 TBROK: mkdir /sys/fs/cgroup/memory /dev/memcg/ltp failed cgroup_fj_stress_memory_3_3_none 1 TINFO: Removing all ltp subgroups... find: ‘/sys/fs/cgroup/memory\n/dev/memcg/ltp/’: No such file or directory tag=cgroup_fj_stress_memory_3_3_none stime=1601688421 dur=0 exit=exited stat=2 core=no cu=1 cs=1 startup='Sat Oct 3 01:27:01 2020' cgroup_fj_stress_memory_4_4_none 1 TINFO: Subsystem memory is mounted at /sys/fs/cgroup/memory /dev/memcg cgroup_fj_stress_memory_4_4_none 1 TINFO: Creating subgroups ... mkdir: cannot create directory ‘/sys/fs/cgroup/memory’: File exists mkdir: cannot create directory ‘/dev/memcg/ltp’: File exists cgroup_fj_stress_memory_4_4_none 1 TBROK: mkdir /sys/fs/cgroup/memory /dev/memcg/ltp failed cgroup_fj_stress_memory_4_4_none 1 TINFO: Removing all ltp subgroups... find: ‘/sys/fs/cgroup/memory\n/dev/memcg/ltp/’: No such file or directory tag=cgroup_fj_stress_memory_4_4_none stime=1601688421 dur=0 exit=exited stat=2 core=no cu=1 cs=1 startup='Sat Oct 3 01:27:01 2020' cgroup_fj_stress_memory_2_9_none 1 TINFO: Subsystem memory is mounted at /sys/fs/cgroup/memory /dev/memcg cgroup_fj_stress_memory_2_9_none 1 TINFO: Creating subgroups ... mkdir: cannot create directory ‘/sys/fs/cgroup/memory’: File exists mkdir: cannot create directory ‘/dev/memcg/ltp’: File exists cgroup_fj_stress_memory_2_9_none 1 TBROK: mkdir /sys/fs/cgroup/memory /dev/memcg/ltp failed cgroup_fj_stress_memory_2_9_none 1 TINFO: Removing all ltp subgroups... find: ‘/sys/fs/cgroup/memory\n/dev/memcg/ltp/’: No such file or directory tag=cgroup_fj_stress_memory_2_9_none stime=1601688421 dur=0 exit=exited stat=2 core=no cu=1 cs=1 startup='Sat Oct 3 01:27:01 2020' cgroup_fj_stress_memory_10_3_none 1 TINFO: Subsystem memory is mounted at /sys/fs/cgroup/memory /dev/memcg cgroup_fj_stress_memory_10_3_none 1 TINFO: Creating subgroups ... mkdir: cannot create directory ‘/sys/fs/cgroup/memory’: File exists mkdir: cannot create directory ‘/dev/memcg/ltp’: File exists cgroup_fj_stress_memory_10_3_none 1 TBROK: mkdir /sys/fs/cgroup/memory /dev/memcg/ltp failed cgroup_fj_stress_memory_10_3_none 1 TINFO: Removing all ltp subgroups... find: ‘/sys/fs/cgroup/memory\n/dev/memcg/ltp/’: No such file or directory tag=cgroup_fj_stress_memory_10_3_none stime=1601688421 dur=0 exit=exited stat=2 core=no cu=1 cs=1 startup='Sat Oct 3 01:27:01 2020' cgroup_fj_stress_memory_1_200_none 1 TINFO: Subsystem memory is mounted at /sys/fs/cgroup/memory /dev/memcg cgroup_fj_stress_memory_1_200_none 1 TINFO: Creating subgroups ... mkdir: cannot create directory ‘/sys/fs/cgroup/memory’: File exists mkdir: cannot create directory ‘/dev/memcg/ltp’: File exists cgroup_fj_stress_memory_1_200_none 1 TBROK: mkdir /sys/fs/cgroup/memory /dev/memcg/ltp failed cgroup_fj_stress_memory_1_200_none 1 TINFO: Removing all ltp subgroups... find: ‘/sys/fs/cgroup/memory\n/dev/memcg/ltp/’: No such file or directory tag=cgroup_fj_stress_memory_1_200_none stime=1601688421 dur=0 exit=exited stat=2 core=no cu=1 cs=1 startup='Sat Oct 3 01:27:01 2020' cgroup_fj_stress_memory_200_1_none 1 TINFO: Subsystem memory is mounted at /sys/fs/cgroup/memory /dev/memcg cgroup_fj_stress_memory_200_1_none 1 TINFO: Creating subgroups ... mkdir: cannot create directory ‘/sys/fs/cgroup/memory’: File exists mkdir: cannot create directory ‘/dev/memcg/ltp’: File exists cgroup_fj_stress_memory_200_1_none 1 TBROK: mkdir /sys/fs/cgroup/memory /dev/memcg/ltp failed cgroup_fj_stress_memory_200_1_none 1 TINFO: Removing all ltp subgroups... find: ‘/sys/fs/cgroup/memory\n/dev/memcg/ltp/’: No such file or directory tag=cgroup_fj_stress_memory_200_1_none stime=1601688421 dur=0 exit=exited stat=2 core=no cu=1 cs=1 startup='Sat Oct 3 01:27:01 2020' cgroup_fj_stress_memory_2_2_one 1 TINFO: Subsystem memory is mounted at /sys/fs/cgroup/memory /dev/memcg cgroup_fj_stress_memory_2_2_one 1 TINFO: Creating subgroups ... mkdir: cannot create directory ‘/sys/fs/cgroup/memory’: File exists mkdir: cannot create directory ‘/dev/memcg/ltp’: File exists cgroup_fj_stress_memory_2_2_one 1 TBROK: mkdir /sys/fs/cgroup/memory /dev/memcg/ltp failed cgroup_fj_stress_memory_2_2_one 1 TINFO: Removing all ltp subgroups... find: ‘/sys/fs/cgroup/memory\n/dev/memcg/ltp/’: No such file or directory tag=cgroup_fj_stress_memory_2_2_one stime=1601688421 dur=0 exit=exited stat=2 core=no cu=1 cs=1 startup='Sat Oct 3 01:27:01 2020' cgroup_fj_stress_memory_3_3_one 1 TINFO: Subsystem memory is mounted at /sys/fs/cgroup/memory /dev/memcg cgroup_fj_stress_memory_3_3_one 1 TINFO: Creating subgroups ... mkdir: cannot create directory ‘/sys/fs/cgroup/memory’: File exists mkdir: cannot create directory ‘/dev/memcg/ltp’: File exists cgroup_fj_stress_memory_3_3_one 1 TBROK: mkdir /sys/fs/cgroup/memory /dev/memcg/ltp failed cgroup_fj_stress_memory_3_3_one 1 TINFO: Removing all ltp subgroups... find: ‘/sys/fs/cgroup/memory\n/dev/memcg/ltp/’: No such file or directory tag=cgroup_fj_stress_memory_3_3_one stime=1601688421 dur=0 exit=exited stat=2 core=no cu=1 cs=0 startup='Sat Oct 3 01:27:01 2020' cgroup_fj_stress_memory_4_4_one 1 TINFO: Subsystem memory is mounted at /sys/fs/cgroup/memory /dev/memcg cgroup_fj_stress_memory_4_4_one 1 TINFO: Creating subgroups ... mkdir: cannot create directory ‘/sys/fs/cgroup/memory’: File exists mkdir: cannot create directory ‘/dev/memcg/ltp’: File exists cgroup_fj_stress_memory_4_4_one 1 TBROK: mkdir /sys/fs/cgroup/memory /dev/memcg/ltp failed cgroup_fj_stress_memory_4_4_one 1 TINFO: Removing all ltp subgroups... find: ‘/sys/fs/cgroup/memory\n/dev/memcg/ltp/’: No such file or directory tag=cgroup_fj_stress_memory_4_4_one stime=1601688421 dur=0 exit=exited stat=2 core=no cu=1 cs=1 startup='Sat Oct 3 01:27:02 2020' cgroup_fj_stress_memory_2_9_one 1 TINFO: Subsystem memory is mounted at /sys/fs/cgroup/memory /dev/memcg cgroup_fj_stress_memory_2_9_one 1 TINFO: Creating subgroups ... mkdir: cannot create directory ‘/sys/fs/cgroup/memory’: File exists mkdir: cannot create directory ‘/dev/memcg/ltp’: File exists cgroup_fj_stress_memory_2_9_one 1 TBROK: mkdir /sys/fs/cgroup/memory /dev/memcg/ltp failed cgroup_fj_stress_memory_2_9_one 1 TINFO: Removing all ltp subgroups... find: ‘/sys/fs/cgroup/memory\n/dev/memcg/ltp/’: No such file or directory tag=cgroup_fj_stress_memory_2_9_one stime=1601688422 dur=0 exit=exited stat=2 core=no cu=0 cs=1 startup='Sat Oct 3 01:27:02 2020' cgroup_fj_stress_memory_10_3_one 1 TINFO: Subsystem memory is mounted at /sys/fs/cgroup/memory /dev/memcg cgroup_fj_stress_memory_10_3_one 1 TINFO: Creating subgroups ... mkdir: cannot create directory ‘/sys/fs/cgroup/memory’: File exists mkdir: cannot create directory ‘/dev/memcg/ltp’: File exists cgroup_fj_stress_memory_10_3_one 1 TBROK: mkdir /sys/fs/cgroup/memory /dev/memcg/ltp failed cgroup_fj_stress_memory_10_3_one 1 TINFO: Removing all ltp subgroups... find: ‘/sys/fs/cgroup/memory\n/dev/memcg/ltp/’: No such file or directory tag=cgroup_fj_stress_memory_10_3_one stime=1601688422 dur=0 exit=exited stat=2 core=no cu=1 cs=1 startup='Sat Oct 3 01:27:02 2020' cgroup_fj_stress_memory_1_200_one 1 TINFO: Subsystem memory is mounted at /sys/fs/cgroup/memory /dev/memcg cgroup_fj_stress_memory_1_200_one 1 TINFO: Creating subgroups ... mkdir: cannot create directory ‘/sys/fs/cgroup/memory’: File exists mkdir: cannot create directory ‘/dev/memcg/ltp’: File exists cgroup_fj_stress_memory_1_200_one 1 TBROK: mkdir /sys/fs/cgroup/memory /dev/memcg/ltp failed cgroup_fj_stress_memory_1_200_one 1 TINFO: Removing all ltp subgroups... find: ‘/sys/fs/cgroup/memory\n/dev/memcg/ltp/’: No such file or directory tag=cgroup_fj_stress_memory_1_200_one stime=1601688422 dur=0 exit=exited stat=2 core=no cu=1 cs=1 startup='Sat Oct 3 01:27:02 2020' cgroup_fj_stress_memory_200_1_one 1 TINFO: Subsystem memory is mounted at /sys/fs/cgroup/memory /dev/memcg cgroup_fj_stress_memory_200_1_one 1 TINFO: Creating subgroups ... mkdir: cannot create directory ‘/sys/fs/cgroup/memory’: File exists mkdir: cannot create directory ‘/dev/memcg/ltp’: File exists cgroup_fj_stress_memory_200_1_one 1 TBROK: mkdir /sys/fs/cgroup/memory /dev/memcg/ltp failed cgroup_fj_stress_memory_200_1_one 1 TINFO: Removing all ltp subgroups... find: ‘/sys/fs/cgroup/memory\n/dev/memcg/ltp/’: No such file or directory tag=cgroup_fj_stress_memory_200_1_one stime=1601688422 dur=0 exit=exited stat=2 core=no cu=1 cs=1 startup='Sat Oct 3 01:27:02 2020' cgroup_fj_stress_memory_2_2_each 1 TINFO: Subsystem memory is mounted at /sys/fs/cgroup/memory /dev/memcg cgroup_fj_stress_memory_2_2_each 1 TINFO: Creating subgroups ... mkdir: cannot create directory ‘/sys/fs/cgroup/memory’: File exists mkdir: cannot create directory ‘/dev/memcg/ltp’: File exists cgroup_fj_stress_memory_2_2_each 1 TBROK: mkdir /sys/fs/cgroup/memory /dev/memcg/ltp failed cgroup_fj_stress_memory_2_2_each 1 TINFO: Removing all ltp subgroups... find: ‘/sys/fs/cgroup/memory\n/dev/memcg/ltp/’: No such file or directory tag=cgroup_fj_stress_memory_2_2_each stime=1601688422 dur=0 exit=exited stat=2 core=no cu=1 cs=0 startup='Sat Oct 3 01:27:02 2020' cgroup_fj_stress_memory_3_3_each 1 TINFO: Subsystem memory is mounted at /sys/fs/cgroup/memory /dev/memcg cgroup_fj_stress_memory_3_3_each 1 TINFO: Creating subgroups ... mkdir: cannot create directory ‘/sys/fs/cgroup/memory’: File exists mkdir: cannot create directory ‘/dev/memcg/ltp’: File exists cgroup_fj_stress_memory_3_3_each 1 TBROK: mkdir /sys/fs/cgroup/memory /dev/memcg/ltp failed cgroup_fj_stress_memory_3_3_each 1 TINFO: Removing all ltp subgroups... find: ‘/sys/fs/cgroup/memory\n/dev/memcg/ltp/’: No such file or directory tag=cgroup_fj_stress_memory_3_3_each stime=1601688422 dur=0 exit=exited stat=2 core=no cu=1 cs=1 startup='Sat Oct 3 01:27:02 2020' cgroup_fj_stress_memory_4_4_each 1 TINFO: Subsystem memory is mounted at /sys/fs/cgroup/memory /dev/memcg cgroup_fj_stress_memory_4_4_each 1 TINFO: Creating subgroups ... mkdir: cannot create directory ‘/sys/fs/cgroup/memory’: File exists mkdir: cannot create directory ‘/dev/memcg/ltp’: File exists cgroup_fj_stress_memory_4_4_each 1 TBROK: mkdir /sys/fs/cgroup/memory /dev/memcg/ltp failed cgroup_fj_stress_memory_4_4_each 1 TINFO: Removing all ltp subgroups... find: ‘/sys/fs/cgroup/memory\n/dev/memcg/ltp/’: No such file or directory tag=cgroup_fj_stress_memory_4_4_each stime=1601688422 dur=0 exit=exited stat=2 core=no cu=1 cs=1 startup='Sat Oct 3 01:27:02 2020' cgroup_fj_stress_memory_2_9_each 1 TINFO: Subsystem memory is mounted at /sys/fs/cgroup/memory /dev/memcg cgroup_fj_stress_memory_2_9_each 1 TINFO: Creating subgroups ... mkdir: cannot create directory ‘/sys/fs/cgroup/memory’: File exists mkdir: cannot create directory ‘/dev/memcg/ltp’: File exists cgroup_fj_stress_memory_2_9_each 1 TBROK: mkdir /sys/fs/cgroup/memory /dev/memcg/ltp failed cgroup_fj_stress_memory_2_9_each 1 TINFO: Removing all ltp subgroups... find: ‘/sys/fs/cgroup/memory\n/dev/memcg/ltp/’: No such file or directory tag=cgroup_fj_stress_memory_2_9_each stime=1601688422 dur=0 exit=exited stat=2 core=no cu=1 cs=1 startup='Sat Oct 3 01:27:02 2020' cgroup_fj_stress_memory_10_3_each 1 TINFO: Subsystem memory is mounted at /sys/fs/cgroup/memory /dev/memcg cgroup_fj_stress_memory_10_3_each 1 TINFO: Creating subgroups ... mkdir: cannot create directory ‘/sys/fs/cgroup/memory’: File exists mkdir: cannot create directory ‘/dev/memcg/ltp’: File exists cgroup_fj_stress_memory_10_3_each 1 TBROK: mkdir /sys/fs/cgroup/memory /dev/memcg/ltp failed cgroup_fj_stress_memory_10_3_each 1 TINFO: Removing all ltp subgroups... find: ‘/sys/fs/cgroup/memory\n/dev/memcg/ltp/’: No such file or directory tag=cgroup_fj_stress_memory_10_3_each stime=1601688422 dur=0 exit=exited stat=2 core=no cu=2 cs=0 startup='Sat Oct 3 01:27:02 2020' cgroup_fj_stress_memory_1_200_each 1 TINFO: Subsystem memory is mounted at /sys/fs/cgroup/memory /dev/memcg cgroup_fj_stress_memory_1_200_each 1 TINFO: Creating subgroups ... mkdir: cannot create directory ‘/sys/fs/cgroup/memory’: File exists mkdir: cannot create directory ‘/dev/memcg/ltp’: File exists cgroup_fj_stress_memory_1_200_each 1 TBROK: mkdir /sys/fs/cgroup/memory /dev/memcg/ltp failed cgroup_fj_stress_memory_1_200_each 1 TINFO: Removing all ltp subgroups... find: ‘/sys/fs/cgroup/memory\n/dev/memcg/ltp/’: No such file or directory tag=cgroup_fj_stress_memory_1_200_each stime=1601688422 dur=0 exit=exited stat=2 core=no cu=1 cs=1 startup='Sat Oct 3 01:27:02 2020' cgroup_fj_stress_memory_200_1_each 1 TINFO: Subsystem memory is mounted at /sys/fs/cgroup/memory /dev/memcg cgroup_fj_stress_memory_200_1_each 1 TINFO: Creating subgroups ... mkdir: cannot create directory ‘/sys/fs/cgroup/memory’: File exists mkdir: cannot create directory ‘/dev/memcg/ltp’: File exists cgroup_fj_stress_memory_200_1_each 1 TBROK: mkdir /sys/fs/cgroup/memory /dev/memcg/ltp failed cgroup_fj_stress_memory_200_1_each 1 TINFO: Removing all ltp subgroups... find: ‘/sys/fs/cgroup/memory\n/dev/memcg/ltp/’: No such file or directory tag=cgroup_fj_stress_memory_200_1_each stime=1601688422 dur=0 exit=exited stat=2 core=no cu=1 cs=1