[Bug 1870589] Re: test-seccomp fails test_restrict_suid_sgid on arm64 on Bionic

[Łukasz Zemczak]

Hello Dan, or anyone else affected,

Accepted systemd into bionic-proposed. The package will build now and be
available at
https://launchpad.net/ubuntu/+source/systemd/237-3ubuntu10.40 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, what testing has been
performed on the package and change the tag from verification-needed-
bionic to verification-done-bionic. If it does not fix the bug for you,
please add a comment stating that, and change the tag to verification-
failed-bionic. In either case, without details of your testing we will
not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: systemd (Ubuntu Bionic)
       Status: In Progress => Fix Committed

** Tags added: verification-needed verification-needed-bionic

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Title:
  test-seccomp fails test_restrict_suid_sgid on arm64 on Bionic

Status in systemd package in Ubuntu:
  Fix Released
Status in systemd source package in Bionic:
  Fix Committed

Bug description:
  [impact]

  RestrictSUIDSGID (backported to Bionic in security CVE) fails 100% of
  the time on arm64, and testcase failure indicates this as well.

  [test case]

  check autopkgtest logs, e.g.
  https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-bionic/bionic/arm64/s/systemd/20200401_091111_34f60@/log.gz

  /* test_restrict_suid_sgid */
  Failed to add suid/sgid rule for architecture arm64, skipping: Numerical argument out of domain
  Assertion 'chmod(path, 0775 | S_ISUID) < 0 && errno == EPERM' failed at ../src/test/test-seccomp.c:823, function test_restrict_suid_sgid(). Aborting.
  suidsgidseccomp terminated by signal ABRT.
  Assertion 'wait_for_terminate_and_check("suidsgidseccomp", pid, WAIT_LOG) == EXIT_SUCCESS' failed at ../src/test/test-seccomp.c:889, function test_restrict_suid_sgid(). Aborting.
  FAIL: test-seccomp (code: 134)
  Aborted (core dumped)

  [regression potential]

  this improves the function that (tries to) install seccomp suid/sgid
  filters, so and regression would involve failure to restrict suid/sgid
  with seccomp filters; however on arm64, the this functionality already
  fails 100% of the time (which is what the failed test case was
  pointing out).

  [scope]

  this fails only in Bionic, and this specific feature and testcase was
  backported in patches for CVE-2019-384x.  It does not appear that the
  backported feature, or its testcase, ever passed in Bionic on arm64.

  [other info]

  systemd bionic arm64 autopkgtests have failed forever, but we should
  fix that.

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