[Bug 1905044] Re: systemd 245.4-4ubuntu3.3 ADT test failure with linux-hwe-5.8

[Kleber Sacilotto de Souza]

@ddstreet thanks for pointing to that other bug report.

After applying the fix from
https://github.com/systemd/systemd/pull/16424 to
systemd_245.4-4ubuntu3.3, 'systemd show' does work:

$ ./systemctl show -p CapabilityBoundingSet apparmor
CapabilityBoundingSet=cap_chown cap_dac_override cap_dac_read_search cap_fowner cap_fsetid cap_kill

But the testcase fails a little bit down the line:

$ ./test-cap-list
cap_chown = 0
cap_dac_override = 1
cap_dac_read_search = 2
[...]
cap_block_suspend vs. cap_block_suspend
cap_audit_read vs. cap_audit_read
Assertion 'streq(t1, t)' failed at src/test/test-cap-list.c:61, function test_capability_set_one(). Aborting.
Aborted (core dumped)

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https://bugs.launchpad.net/bugs/1905044

Title:
  systemd 245.4-4ubuntu3.3 ADT test failure with linux-hwe-5.8

Status in systemd package in Ubuntu:
  Invalid
Status in systemd source package in Focal:
  Confirmed

Bug description:
  Testing failed on:
      amd64: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-focal/focal/amd64/s/systemd/20201117_174614_4ece6@/log.gz
      arm64: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-focal/focal/arm64/s/systemd/20201117_221555_48b91@/log.gz
      ppc64el: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-focal/focal/ppc64el/s/systemd/20201117_175806_e779f@/log.gz
      s390x: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-focal/focal/s390x/s/systemd/20201117_153051_90e7e@/log.gz

  The failing testcases are:

  - root-unittests

  Assertion 'capability_set_to_string_alloc(c, &t1) == 0' failed at src/test/test-cap-list.c:60, funct
  ion test_capability_set_one(). Aborting.
  FAIL: test-cap-list (code: 134)

  - upstream

  TEST-24-UNIT-TESTS:

  --- test-cap-list begin ---
  Assertion 'capability_set_to_string_alloc(c, &t1) == 0' failed at src/test/test-cap-list.c:60, funct
  ion test_capability_set_one(). Aborting.
  --- test-cap-list end ---

  Both seem to be failing with the same assertion.

  These tests are successful on Focal with linux 5.4, therefore they
  would regress when upgrading the kernel from 5.4 to 5.8.

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