Public bug reported:

This was observed on:
- focal:linux-hwe-5.15
- cycle 20230320
- rumford

Logs:

18690           05:38:38 DEBUG| memcg_usage_in_bytes_test 1 TINFO: timeout per 
run is 0h 5m 0s
                18691           05:38:38 DEBUG| memcg_usage_in_bytes_test 1 
TINFO: set /sys/fs/cgroup/memory/memory.use_hierarchy to 0 failed
                18692           05:38:38 DEBUG| memcg_usage_in_bytes_test 1 
TINFO: Test memory.usage_in_bytes
                18693           05:38:38 DEBUG| memcg_usage_in_bytes_test 1 
TINFO: Running memcg_process --mmap-anon -s 4194304
                18694           05:38:38 DEBUG| memcg_usage_in_bytes_test 1 
TINFO: Warming up pid: 127171
                18695           05:38:38 DEBUG| memcg_usage_in_bytes_test 1 
TINFO: Process is still here after warm up: 127171
                18696           05:38:38 DEBUG| memcg_usage_in_bytes_test 1 
TPASS: memory.usage_in_bytes is 4202496-4337664 as expected
                18697           05:38:38 DEBUG| memcg_usage_in_bytes_test 1 
TBROK: timed out on memory.usage_in_bytes 131072 4202496 4194304
                18698           05:38:38 DEBUG| memcg_usage_in_bytes_test 1 
TINFO: AppArmor enabled, this may affect test results
                18699           05:38:38 DEBUG| memcg_usage_in_bytes_test 1 
TINFO: it can be disabled with TST_DISABLE_APPARMOR=1 (requires super/root)
                18700           05:38:38 DEBUG| memcg_usage_in_bytes_test 1 
TINFO: loaded AppArmor profiles: none
                18701           05:38:38 DEBUG| 
                18702           05:38:38 DEBUG| Summary:
                18703           05:38:38 DEBUG| passed   1
                18704           05:38:38 DEBUG| failed   0
                18705           05:38:38 DEBUG| broken   1
                18706           05:38:38 DEBUG| skipped  0
                18707           05:38:38 DEBUG| warnings 0
                18708           05:38:38 DEBUG| INFO: ltp-pan reported some 
tests FAIL
                18709           05:38:38 DEBUG| LTP Version: 20220527

** Affects: linux-hwe-5.15 (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: linux-hwe-5.15 (Ubuntu Focal)
     Importance: Undecided
         Status: New


** Tags: sru-20230320

** Tags added: sru-20230320

** Package changed: linux (Ubuntu) => linux-hwe-5.15 (Ubuntu)

** Also affects: linux-hwe-5.15 (Ubuntu Focal)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/2015876

Title:
  ubuntu_ltp_controllers.memcg_usage_in_bytes fails the
  memory.usage_in_bytes subtest

Status in linux-hwe-5.15 package in Ubuntu:
  New
Status in linux-hwe-5.15 source package in Focal:
  New

Bug description:
  This was observed on:
  - focal:linux-hwe-5.15
  - cycle 20230320
  - rumford

  Logs:

  18690                 05:38:38 DEBUG| memcg_usage_in_bytes_test 1 TINFO: 
timeout per run is 0h 5m 0s
                18691           05:38:38 DEBUG| memcg_usage_in_bytes_test 1 
TINFO: set /sys/fs/cgroup/memory/memory.use_hierarchy to 0 failed
                18692           05:38:38 DEBUG| memcg_usage_in_bytes_test 1 
TINFO: Test memory.usage_in_bytes
                18693           05:38:38 DEBUG| memcg_usage_in_bytes_test 1 
TINFO: Running memcg_process --mmap-anon -s 4194304
                18694           05:38:38 DEBUG| memcg_usage_in_bytes_test 1 
TINFO: Warming up pid: 127171
                18695           05:38:38 DEBUG| memcg_usage_in_bytes_test 1 
TINFO: Process is still here after warm up: 127171
                18696           05:38:38 DEBUG| memcg_usage_in_bytes_test 1 
TPASS: memory.usage_in_bytes is 4202496-4337664 as expected
                18697           05:38:38 DEBUG| memcg_usage_in_bytes_test 1 
TBROK: timed out on memory.usage_in_bytes 131072 4202496 4194304
                18698           05:38:38 DEBUG| memcg_usage_in_bytes_test 1 
TINFO: AppArmor enabled, this may affect test results
                18699           05:38:38 DEBUG| memcg_usage_in_bytes_test 1 
TINFO: it can be disabled with TST_DISABLE_APPARMOR=1 (requires super/root)
                18700           05:38:38 DEBUG| memcg_usage_in_bytes_test 1 
TINFO: loaded AppArmor profiles: none
                18701           05:38:38 DEBUG| 
                18702           05:38:38 DEBUG| Summary:
                18703           05:38:38 DEBUG| passed   1
                18704           05:38:38 DEBUG| failed   0
                18705           05:38:38 DEBUG| broken   1
                18706           05:38:38 DEBUG| skipped  0
                18707           05:38:38 DEBUG| warnings 0
                18708           05:38:38 DEBUG| INFO: ltp-pan reported some 
tests FAIL
                18709           05:38:38 DEBUG| LTP Version: 20220527

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