ubuntu_ltp_controllers:memcg_move_charge_at_immigrate: memcg_process: shmget() failed: Invalid argument

[Stefan Bader]

Something vaguely similar had been reported against i386 for disco (bug #1837037). Just thought I do this as a new bug with further comments. Seen for kuzzle(arm64) for hirsute:linux(5.11.0-41.45 ) on sru-20211108.

memcg_move_charge_at_immigrate_test 2 TINFO: Test move anon
memcg_move_charge_at_immigrate_test 2 TINFO: Running memcg_process --mmap-anon --shm --mmap-file -s 135168
memcg_move_charge_at_immigrate_test 2 TINFO: Warming up pid: 148126
memcg_process: shmget() failed: Invalid argument
 /opt/ltp/testcases/bin/memcg_move_charge_at_immigrate_test.sh: 263: kill: No such process
memcg_move_charge_at_immigrate_test 2 TFAIL: Process 148126 exited with 1 after warm up
memcg_move_charge_at_immigrate_test 3 TINFO: Test move file
memcg_move_charge_at_immigrate_test 3 TINFO: Running memcg_process --mmap-anon --shm --mmap-file -s 135168
memcg_move_charge_at_immigrate_test 3 TINFO: Warming up pid: 148137
memcg_process: shmget() failed: Invalid argument
 /opt/ltp/testcases/bin/memcg_move_charge_at_immigrate_test.sh: 263: kill: No such process
memcg_move_charge_at_immigrate_test 3 TFAIL: Process 148137 exited with 1 after warm up
memcg_move_charge_at_immigrate_test 4 TINFO: Test move anon and file
memcg_move_charge_at_immigrate_test 4 TINFO: Running memcg_process --mmap-anon --shm -s 135168
memcg_move_charge_at_immigrate_test 4 TINFO: Warming up pid: 148148
memcg_process: shmget() failed: Invalid argument
 /opt/ltp/testcases/bin/memcg_move_charge_at_immigrate_test.sh: 263: kill: No such process
memcg_move_charge_at_immigrate_test 4 TFAIL: Process 148148 exited with 1 after warm up

This seems to be related to a certain shmget() size. Maybe the method of guessing how much to use goes wrong in some cases and then leads to those issues.

[Po-Hsu Lin (cypressyew)]

Found on node a1.medium with H-5.11 AWS 5.11.0-1023.24