focal ubuntu_ltp_controllers:memcg_stat_rss fails on ppc64el

[Roxana Nicolescu]

This test's been failing for a while but this error is different. Seen only on ppc64el.10 with focal linux 5.4.0-162

Logs
17330 Checking for required user/group ids
      17331
      17332 'root' user id and group found.
      17333 'nobody' user id and group found.
      17334 'bin' user id and group found.
      17335 'daemon' user id and group found.
      17336 Users group found.
      17337 Sys group found.
      17338 Required users/groups exist.
      17339 no big block device was specified on commandline.
      17340 Tests which require a big block device are disabled.
      17341 You can specify it with option -z
      17342 INFO: Test start time: Mon Aug 14 17:31:26 UTC 2023
      17343 COMMAND: /opt/ltp/bin/ltp-pan -q -e -S -a 231822 -n 231822 -f /tmp/ltp-GW3L7W4Pi5/alltests -l /dev/null -C /dev/null -T /dev/null
      17344 LOG File: /dev/null
      17345 FAILED COMMAND File: /dev/null
      17346 TCONF COMMAND File: /dev/null
      17347 Running tests.......
      17348 memcg_stat_rss 1 TINFO: timeout per run is 0h 5m 0s
      17349 memcg_stat_rss 1 TINFO: set /sys/fs/cgroup/memory/memory.use_hierarchy to 0 failed
      17350 memcg_stat_rss 1 TINFO: Setting shmmax
      17351 memcg_stat_rss 1 TINFO: Running memcg_process --mmap-anon -s 2162688
      17352 memcg_stat_rss 1 TINFO: Warming up pid: 231919
      17353 memcg_stat_rss 1 TINFO: Process is still here after warm up: 231919
      17354 memcg_stat_rss 1 TFAIL: rss is 0, 2162688 expected
      17355 memcg_stat_rss 2 TINFO: Running memcg_process --mmap-file -s 65536
      17356 memcg_stat_rss 2 TINFO: Warming up pid: 231939
      17357 memcg_stat_rss 2 TINFO: Process is still here after warm up: 231939
      17358 memcg_stat_rss 2 TPASS: rss is 0 as expected
      17359 memcg_stat_rss 3 TINFO: Running memcg_process --shm -k 3 -s 65536
      17360 memcg_stat_rss 3 TINFO: Warming up pid: 231955
      17361 memcg_stat_rss 3 TINFO: Process is still here after warm up: 231955
      17362 memcg_stat_rss 3 TPASS: rss is 0 as expected
      17363 memcg_stat_rss 4 TINFO: Running memcg_process --mmap-anon --mmap-file --shm -s 2162688
      17364 memcg_stat_rss 4 TINFO: Warming up pid: 231973
      17365 memcg_stat_rss 4 TINFO: Process is still here after warm up: 231973
      17366 memcg_stat_rss 4 TPASS: rss is 2162688 as expected
      17367 memcg_stat_rss 5 TINFO: Running memcg_process --mmap-lock1 -s 2162688
      17368 memcg_stat_rss 5 TINFO: Warming up pid: 231991
      17369 memcg_stat_rss 5 TINFO: Process is still here after warm up: 231991
      17370 memcg_stat_rss 5 TPASS: rss is 2162688 as expected
      17371 memcg_stat_rss 6 TINFO: Running memcg_process --mmap-anon -s 2162688
      17372 memcg_stat_rss 6 TINFO: Warming up pid: 232007
      17373 memcg_stat_rss 6 TINFO: Process is still here after warm up: 232007
      17374 memcg_stat_rss 6 TPASS: rss is 2162688 as expected
      17375 memcg_stat_rss 6 TPASS: rss is 0 as expected
      17376 memcg_stat_rss 7 TINFO: Running memcg_process --mmap-file -s 65536
      17377 memcg_stat_rss 7 TINFO: Warming up pid: 232028
      17378 memcg_stat_rss 7 TINFO: Process is still here after warm up: 232028
      17379 memcg_stat_rss 7 TPASS: rss is 0 as expected
      17380 memcg_stat_rss 7 TPASS: rss is 0 as expected
      17381 memcg_stat_rss 8 TINFO: Running memcg_process --shm -k 8 -s 65536
      17382 memcg_stat_rss 8 TINFO: Warming up pid: 232047
      17383 memcg_stat_rss 8 TINFO: Process is still here after warm up: 232047
      17384 memcg_stat_rss 8 TPASS: rss is 0 as expected
      17385 memcg_stat_rss 8 TPASS: rss is 0 as expected
      17386 memcg_stat_rss 9 TINFO: Running memcg_process --mmap-anon --mmap-file --shm -s 2162688
      17387 memcg_stat_rss 9 TINFO: Warming up pid: 232068
      17388 memcg_stat_rss 9 TINFO: Process is still here after warm up: 232068
      17389 memcg_stat_rss 9 TPASS: rss is 2162688 as expected
      17390 memcg_stat_rss 9 TPASS: rss is 0 as expected
      17391 memcg_stat_rss 10 TINFO: Running memcg_process --mmap-lock1 -s 2162688
      17392 memcg_stat_rss 10 TINFO: Warming up pid: 232087
      17393 memcg_stat_rss 10 TINFO: Process is still here after warm up: 232087
      17394 memcg_stat_rss 10 TPASS: rss is 2162688 as expected
      17395 memcg_stat_rss 10 TPASS: rss is 0 as expected
      17396 memcg_stat_rss 11 TINFO: AppArmor enabled, this may affect test results
      17397 memcg_stat_rss 11 TINFO: it can be disabled with TST_DISABLE_APPARMOR=1 (requires super/root)
      17398 memcg_stat_rss 11 TINFO: loaded AppArmor profiles: none
      17399
      17400 Summary:
      17401 passed 14
      17402 failed 1
      17403 broken 0
      17404 skipped 0
      17405 warnings 0
      17406 INFO: ltp-pan reported some tests FAIL
      17407 LTP Version: 20230516