focal ubuntu_ltp_controllers:cpuset_memory_pressure fails on ppc64el

Logs

This happens only on ppcel.10 on Kernel-P10d-LPAR10.ppc64el.10 instance.
First seen on 5.4.0-162 kernel.

Logs
 ubuntu_ltp_controllers.cpuset_memory ubuntu_ltp_controllers.cpuset_memory timestamp=1692037714 localtime=Aug 14 18:28:34
      128209 18:28:34 DEBUG| Persistent state client._record_indent now set to 1
      128210 18:28:34 DEBUG| Persistent state client.unexpected_reboot deleted
      128211 18:28:34 DEBUG| Test has timeout: 4500 sec.
      128212 18:28:34 INFO | START ubuntu_ltp_controllers.cpuset_memory_pressure ubuntu_ltp_controllers.cpuset_memory_pressure timestamp=1692037714 timeout=4500 localtime=Aug 14 18:28:34
      128213 18:28:34 DEBUG| Persistent state client._record_indent now set to 2
      128214 18:28:34 DEBUG| Persistent state client.unexpected_reboot now set to ('ubuntu_ltp_controllers.cpuset_memory_pressure', 'ubuntu_ltp_controllers.cpuset_memory_pressure')
      128215 18:28:34 DEBUG| Waiting for pid 911488 for 4500 seconds
      128216 18:28:34 WARNI| System python is too old, crash handling disabled
      128217 18:28:53 ERROR| Exception escaping from test:
      128218 Traceback (most recent call last):
      128219 File "/home/ubuntu/autotest/client/shared/test.py", line 411, in _exec
      128220 _call_test_function(self.execute, *p_args, **p_dargs)
      128221 File "/home/ubuntu/autotest/client/shared/test.py", line 823, in _call_test_function
      128222 return func(*args, **dargs)
      128223 File "/home/ubuntu/autotest/client/shared/test.py", line 291, in execute
      128224 postprocess_profiled_run, args, dargs)
      128225 File "/home/ubuntu/autotest/client/shared/test.py", line 212, in _call_run_once
      128226 self.run_once(*args, **dargs)
      128227 File "/home/ubuntu/autotest/client/tests/ubuntu_ltp_controllers/ubuntu_ltp_controllers.py", line 136, in run_once
      128228 print(utils.system_output(cmd, verbose=False))
      128229 File "/home/ubuntu/autotest/client/shared/utils.py", line 1271, in system_output
      128230 verbose=verbose, args=args).stdout
      128231 File "/home/ubuntu/autotest/client/shared/utils.py", line 918, in run
      128232 "Command returned non-zero exit status")
      128233 CmdError: Command failed, rc=1, Command returned non-zero exit status
      128234 * Command:
      128235 /opt/ltp/runltp -f /tmp/target -q -C /dev/null -l /dev/null -T /dev/null
      128236 Exit status: 1
      128237 Duration: 19.525826931
      128238
      128239 stdout:
      128240 Checking for required user/group ids
      128241
      128242 'root' user id and group found.
      128243 'nobody' user id and group found.
      128244 'bin' user id and group found.
      128245 'daemon' user id and group found.
      128246 Users group found.
      128247 Sys group found.
      128248 Required users/groups exist.
      128249 no big block device was specified on commandline.
      128250 Tests which require a big block device are disabled.
      128251 You can specify it with option -z
      128252 INFO: Test start time: Mon Aug 14 18:28:34 UTC 2023
      128253 COMMAND: /opt/ltp/bin/ltp-pan -q -e -S -a 911492 -n 911492 -f /tmp/ltp-C63O6yAx3r/alltests -l /dev/null -C /dev/null -T /dev/null
      128254 LOG File: /dev/null
      128255 FAILED COMMAND File: /dev/null
      128256 TCONF COMMAND File: /dev/null
      128257 Running tests.......
      128258 cpuset_memory_pressure 1 TINFO: CPUs are numbered continuously starting at 0 (0-15)
      128259 cpuset_memory_pressure 1 TINFO: Nodes are numbered continuously starting at 0 (0-2)
      128260 cpuset_memory_pressure 1 TPASS: Cpuset memory pressure test succeeded.
      128261 cpuset_memory_pressure 3 TPASS: Cpuset memory pressure test succeeded.
      128262 cpuset_memory_pressure 5 TPASS: Cpuset memory pressure test succeeded.
      128263 Killed
      128264 cpuset_memory_pressure 7 TPASS: Cpuset memory pressure test succeeded.
      128265 cpuset_memory_pressure 9 TFAIL: root group's memory_pressure didn't have memory pressure rate.
      128266