[Bug 2067922] Re: on WSL systemd status fails output

[Ubuntu Foundations Team Bug Bot]

The attachment "8e57759d6d80ef772d8e17a4559a6797e09af93a.patch" seems to
be a patch.  If it isn't, please remove the "patch" flag from the
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** Tags added: patch

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Title:
  on WSL systemd status fails output

Status in systemd package in Ubuntu:
  New
Status in systemd source package in Noble:
  Triaged

Bug description:
  WSL 24.04 / systemd 255.4-1ubuntu8

  * Upstream report: https://github.com/microsoft/WSL/issues/8879
  * Upstream PR: https://github.com/systemd/systemd/pull/32534
  * Upstream commit: https://github.com/systemd/systemd-stable/commit/8e57759d6d80ef772d8e17a4559a6797e09af93a.patch

  
  In WSL, the cgroup.procs PID list for some reason contain a ton of zeros everywhere from unmapped PIDs.
  Whenever cg_read_pid encounters such a zero, it throws an error. This makes systemd near unusable inside of WSL.

  
  # Test Case
  install Ubuntu WSL 24.04 from the MS STore. This version has systemd already enabled.

  ## Expected Behavior
  systemctl status command to work

  ## Actual Behavior
  toor at XPS:~$ systemctl status
  Failed to dump process list for 'XPS', ignoring: Input/output error
  ● XPS
      State: degraded
      Units: 318 loaded (incl. loaded aliases)
       Jobs: 0 queued
     Failed: 1 units
      Since: Sat 2022-09-24 08:43:15 PDT; 14min ago
    systemd: 251.4-1ubuntu6
    Tainted: cgroupsv1
     CGroup: /

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