[Bug 2148656] Re: Bug reports with zstd compressed CoreDump are not retraced

[Launchpad Bug Tracker]

This bug was fixed in the package apport - 2.28.3-0ubuntu0.1

---------------
apport (2.28.3-0ubuntu0.1) noble; urgency=medium

  * New upstream bug-fix release.
    - Fix support for zstd compressed CoreDump (LP: #2148656)
    - apt_dpkg:
      + Fix retracing with a HTTP proxy set (LP: #2159029)
      + exclude {usr/,}lib/modules and more from Contents-*.gz cache
        to reduce required memory for apport-retrace (LP: #2073787)
      + fix mapping primary ports.ubuntu.com to archive.ubuntu.com
        (LP: #2150427)
      + fix GDB command for amd64 sandbox on non-amd64 (LP: #2150427)
      + Replace apt-key with direct key download
    - problem_report: avoid double .txt file extension (LP: #2149892)
    - test:
      + relax check for Package field (LP: #2149909)
      + fix running tests as non-root system user (LP: #2153134)
  * Depend on python3-pytest-cov in addition to python3-pytest
  * test: replace SKIP_ONLINE_TESTS by requires_internet marker
  * test: wait for child processes to complete execve() (LP: #2161888)

 -- Benjamin Drung <bdrung at ubuntu.com>  Wed, 29 Jul 2026 16:09:48 +0200

** Changed in: apport (Ubuntu Noble)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/2148656

Title:
  Bug reports with zstd compressed CoreDump are not retraced

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

Bug description:
  [ Impact ]

  When Apport is used with systemd-coredump, the CoreDump is zstd
  compressed (instead of gzip). When filing Launchpad bugs, the zstd
  compressed CoreDump is attached to the bug named CoreDump.gz (see bug
  #2148535 for example). The file should be named CoreDump.zstd instead.
  apport-retrace will complain about this coredump file, because it is
  not valid gzip.

  [ Test Plan ]

  Besides the autopkgtest test coverage:

  1. Install systemd-coredump
  2. Reboot (to ensure systemd-coredump is used)
  3. Call: divide-by-zero
  4. Report the crash to qastaging: APPORT_LAUNCHPAD_INSTANCE=qastaging apport-cli /var/crash/_usr_bin_divide-by-zero.1000.crash
  5. Retrace that reported bug: APPORT_LAUNCHPAD_INSTANCE=qastaging apport-retrace --auth ~/.cache/apport/launchpad.credentials -S system $bug_namber

  [ Where problems could occur ]

  The change is in the code that handles submitting problem reports to
  Launchpad. It could affect reporting bugs against Ubuntu and could
  cause breaking retracing them.

  [ Other Info ]

  This SRU addresses a big number of bugs, because it addresses the
  several bugs that causes the autopkgtest to fail or fail under certain
  conditions. I also bundled the fixes around reporting/retracing the
  bugs reports that we found after modernizing the retracing
  infrastructure.

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