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

[Dan Streetman]

** Description changed:

  [impact]
  
  test case failure
  
  [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]
  
- TBD
+ 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 appears to fail only in Bionic, and this specific testcase was
  backported in patch CVE-2019-384x-2.patch.  It does not appear that it
  ever passed in Bionic on arm64.
  
  [other info]
  
  systemd bionic arm64 autopkgtests have failed forever, but we should fix
  that.

** Description changed:

  [impact]
  
- test case failure
+ 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 appears to fail only in Bionic, and this specific testcase was
- backported in patch CVE-2019-384x-2.patch.  It does not appear that it
- ever passed in Bionic on arm64.
+ 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.

** Changed in: systemd (Ubuntu Bionic)
   Importance: Low => Medium

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https://bugs.launchpad.net/bugs/1870589

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:
  In Progress

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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