[Bug 2073933] Re: tests/integration/test_signal_crashes.py::T::test_core_dump_packaged fails on armhf

[Benjamin Drung]

Verified successful autopkgtest on
https://autopkgtest.ubuntu.com/packages/apport for 2.28.1-0ubuntu3.3:

* amd64: https://autopkgtest.ubuntu.com/results/autopkgtest-noble/noble/amd64/a/apport/20241114_155914_7aded@/log.gz
* arm64: https://autopkgtest.ubuntu.com/results/autopkgtest-noble/noble/arm64/a/apport/20241114_152854_d2cf5@/log.gz
* armhf: https://autopkgtest.ubuntu.com/results/autopkgtest-noble/noble/armhf/a/apport/20241114_153245_54069@/log.gz
* ppc64el: https://autopkgtest.ubuntu.com/results/autopkgtest-noble/noble/ppc64el/a/apport/20241114_153720_f72b7@/log.gz
* s390x: https://autopkgtest.ubuntu.com/results/autopkgtest-noble/noble/s390x/a/apport/20241114_152611_b90ee@/log.gz

All test were successful, except for these tests on s390x:

```
FAILED tests/unit/test_problem_report.py::T::test_modify
FAILED tests/unit/test_report.py::T::test_report_from_systemd_coredump_storage_journal
FAILED tests/integration/test_problem_report.py::T::test_big_file
FAILED tests/integration/test_problem_report.py::T::test_write_file
```

These four test failures are caused by bug #2076269 which I will address
in a future SRU (summary: it's a flaw of the test, but not the non-test
code).

** Tags removed: verification-needed verification-needed-noble
** Tags added: verification-done verification-done-noble

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Title:
  tests/integration/test_signal_crashes.py::T::test_core_dump_packaged
  fails on armhf

Status in Apport:
  Fix Released
Status in apport package in Ubuntu:
  Fix Released
Status in apport source package in Noble:
  Fix Committed

Bug description:
  [ Impact ]

  The Apport 2.29.0 test case
  `tests/integration/test_signal_crashes.py::T::test_core_dump_packaged`
  can fail on armhf:

  ```
  394s =================================== FAILURES ===================================
  394s __________________________ T.test_core_dump_packaged ___________________________
  394s
  394s self = <tests.integration.test_signal_crashes.T testMethod=test_core_dump_packaged>
  394s
  394s     def test_core_dump_packaged(self):
  394s         """Packaged executables create core dumps on proper ulimits."""
  394s         # for SEGV and ABRT we expect reports and core files
  394s         for sig in (signal.SIGSEGV, signal.SIGABRT):
  394s             for kb, exp_file in core_ulimit_table:
  394s                 resource.setrlimit(resource.RLIMIT_CORE, (kb, -1))
  394s                 self.do_crash(
  394s                     expect_corefile=exp_file,
  394s                     expect_corefile_owner=os.geteuid(),
  394s                     sig=sig,
  394s                 )
  394s >               self.check_report_coredump(self.test_report)
  394s
  394s /tmp/autopkgtest.GVBNRi/autopkgtest_tmp/tests/integration/test_signal_crashes.py:426:
  394s _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
  394s /tmp/autopkgtest.GVBNRi/autopkgtest_tmp/tests/integration/test_signal_crashes.py:1216: in check_report_coredump
  394s     self.assertIn("\n#2", r.get("Stacktrace"))
  394s E   AssertionError: '\n#2' not found in '#0  0xf7fe2734 in ?? ()\nNo symbol table info available.\n#1  0xf7fef000 in ?? ()\nNo symbol table info available.\nBacktrace stopped: previous frame identical to this frame (corrupt stack?)'
  ```

  Full log: https://autopkgtest.ubuntu.com/results/autopkgtest-
  oracular/oracular/armhf/a/apport/20240618_034715_7581f@/log.gz

  [ Test Plan ]

  Check that the fixed Apport does not have failing unit-and-
  integration-tests autopkgtests on all archs.

  [ Where problems could occur ]

  The fix only touches test code. It could only affect the test results,
  but not code installed on the users machines.

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