[Bug 1783881] Re: ltp-syscalls: msgstress03 fails because systemd limits number of processes

[Kelsey Margarete Skunberg]

msgstress03 and msgstress04 is failing with similar behavior on Focal
aws : 5.4.0-1026.26 : amd64

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https://bugs.launchpad.net/bugs/1783881

Title:
  ltp-syscalls: msgstress03 fails because systemd limits number of
  processes

Status in ubuntu-kernel-tests:
  Triaged
Status in linux package in Ubuntu:
  Incomplete
Status in linux-azure package in Ubuntu:
  New
Status in systemd package in Ubuntu:
  Incomplete
Status in linux source package in Xenial:
  New
Status in linux-azure source package in Xenial:
  New
Status in systemd source package in Xenial:
  New
Status in linux source package in Bionic:
  New
Status in linux-azure source package in Bionic:
  New
Status in systemd source package in Bionic:
  New

Bug description:
  As systemd limits the number of processes, this test will fail because
  it can't fork enough processes. That is limited to when the test is
  run after logging as user 1000, then running sudo. I guess that
  logging as root may not cause this to happen.

  # ./testcases/bin/msgstress03 
  Fork failed (may be OK if under stress)
  Fork failed (may be OK if under stress)
  msgstress03    1  TFAIL  :  msgstress03.c:157:  Fork failed (may be OK if under stress)
  #

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