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[Bug 2119291] Re: mesa 25.0.7 SRU breaks gtk4 on s390x

To: debcrafters-packages@xxxxxxxxxxxxxxxxxxx
From: Andreas Hasenack <2119291@xxxxxxxxxxxxxxxxxx>
Date: Sat, 02 Aug 2025 18:25:54 -0000
Reply-to: Bug 2119291 <2119291@xxxxxxxxxxxxxxxxxx>
Sender: noreply@xxxxxxxxxxxxx
Tests that are failing with TIMEOUT on s390x, from the test logs:
657/666 gtk:reftest / reftest background-positioning-area-empty.ui                   TIMEOUT         90.14s   killed by signal 15 SIGTERM
658/666 gtk:reftest / reftest border-color-default.ui                                TIMEOUT         90.07s   killed by signal 15 SIGTERM
659/666 gtk:reftest / reftest box-pseudo-classes.ui                                  TIMEOUT         90.06s   killed by signal 15 SIGTERM
660/666 gtk:reftest / reftest box-shadow-with-blend-mode.ui                          TIMEOUT         90.06s   killed by signal 15 SIGTERM
661/666 gtk:reftest / reftest css-match-inherit-different-state.ui                   TIMEOUT         90.07s   killed by signal 15 SIGTERM
662/666 gtk:reftest / reftest css-match-inherit.ui                                   TIMEOUT         90.08s   killed by signal 15 SIGTERM
663/666 gtk:reftest / reftest late-property.ui                                       TIMEOUT         90.05s   killed by signal 15 SIGTERM
664/666 gtk:reftest / reftest messagedialog-secondarytext.ui                         TIMEOUT         90.05s   killed by signal 15 SIGTERM
665/666 gtk:reftest / reftest style-properties-only-child.ui                         TIMEOUT         90.05s   killed by signal 15 SIGTERM
666/666 gtk:reftest / reftest window-height-for-width.ui                             TIMEOUT         90.05s   killed by signal 15 SIGTERM
657/666 gtk:reftest / reftest background-positioning-area-empty.ui                   TIMEOUT         90.14s   killed by signal 15 SIGTERM
658/666 gtk:reftest / reftest border-color-default.ui                                TIMEOUT         90.07s   killed by signal 15 SIGTERM
659/666 gtk:reftest / reftest box-pseudo-classes.ui                                  TIMEOUT         90.06s   killed by signal 15 SIGTERM
660/666 gtk:reftest / reftest box-shadow-with-blend-mode.ui                          TIMEOUT         90.06s   killed by signal 15 SIGTERM
661/666 gtk:reftest / reftest css-match-inherit-different-state.ui                   TIMEOUT         90.07s   killed by signal 15 SIGTERM
662/666 gtk:reftest / reftest css-match-inherit.ui                                   TIMEOUT         90.08s   killed by signal 15 SIGTERM
663/666 gtk:reftest / reftest late-property.ui                                       TIMEOUT         90.05s   killed by signal 15 SIGTERM
664/666 gtk:reftest / reftest messagedialog-secondarytext.ui                         TIMEOUT         90.05s   killed by signal 15 SIGTERM
665/666 gtk:reftest / reftest style-properties-only-child.ui                         TIMEOUT         90.05s   killed by signal 15 SIGTERM
666/666 gtk:reftest / reftest window-height-for-width.ui                             TIMEOUT         90.05s   killed by signal 15 SIGTERM
604/666 gtk:reftest / reftest animation-fill-mode-iteration-count.ui                 TIMEOUT         90.23s   killed by signal 15 SIGTERM
605/666 gtk:reftest / reftest background-positioning-area-empty.ui                   TIMEOUT         90.17s   killed by signal 15 SIGTERM
607/666 gtk:reftest / reftest border-color-default.ui                                TIMEOUT         90.08s   killed by signal 15 SIGTERM
609/666 gtk:reftest / reftest box-pseudo-classes.ui                                  TIMEOUT         90.07s   killed by signal 15 SIGTERM
612/666 gtk:reftest / reftest box-shadow-with-blend-mode.ui                          TIMEOUT         90.09s   killed by signal 15 SIGTERM
625/666 gtk:reftest / reftest css-match-inherit.ui                                   TIMEOUT         90.06s   killed by signal 15 SIGTERM
627/666 gtk:reftest / reftest css-match-inherit-different-state.ui                   TIMEOUT         90.08s   killed by signal 15 SIGTERM
631/666 gtk:reftest / reftest default-size-with-titlebar.ui                          TIMEOUT         90.07s   killed by signal 15 SIGTERM
633/666 gtk:reftest / reftest default-size-without-titlebar.ui                       TIMEOUT         90.10s   killed by signal 15 SIGTERM
653/666 gtk:reftest / reftest inscription-overflow.ui                                TIMEOUT         90.07s   killed by signal 15 SIGTERM
655/666 gtk:reftest / reftest inscription-overflow-multiline.ui                      TIMEOUT         90.06s   killed by signal 15 SIGTERM
656/666 gtk:reftest / reftest inscription-overflow-yalign.ui                         TIMEOUT         90.06s   killed by signal 15 SIGTERM
658/666 gtk:reftest / reftest label-wrap-word-char-natural-size.ui                   TIMEOUT         90.06s   killed by signal 15 SIGTERM
659/666 gtk:reftest / reftest late-binding.ui                                        TIMEOUT         90.06s   killed by signal 15 SIGTERM
660/666 gtk:reftest / reftest late-property.ui                                       TIMEOUT         90.06s   killed by signal 15 SIGTERM
661/666 gtk:reftest / reftest messagedialog-secondarytext.ui                         TIMEOUT         90.06s   killed by signal 15 SIGTERM
662/666 gtk:reftest / reftest overlay-no-main-widget.ui                              TIMEOUT         90.13s   killed by signal 15 SIGTERM
663/666 gtk:reftest / reftest sibling-pseudoclasses.ui                               TIMEOUT         90.05s   killed by signal 15 SIGTERM
664/666 gtk:reftest / reftest style-properties-only-child.ui                         TIMEOUT         90.05s   killed by signal 15 SIGTERM
665/666 gtk:reftest / reftest treeview-crash-too-wide.ui                             TIMEOUT         90.05s   killed by signal 15 SIGTERM
666/666 gtk:reftest / reftest window-height-for-width.ui                             TIMEOUT         90.05s   killed by signal 15 SIGTERM
604/666 gtk:reftest / reftest animation-fill-mode-iteration-count.ui                 TIMEOUT         90.23s   killed by signal 15 SIGTERM
605/666 gtk:reftest / reftest background-positioning-area-empty.ui                   TIMEOUT         90.17s   killed by signal 15 SIGTERM
607/666 gtk:reftest / reftest border-color-default.ui                                TIMEOUT         90.08s   killed by signal 15 SIGTERM
609/666 gtk:reftest / reftest box-pseudo-classes.ui                                  TIMEOUT         90.07s   killed by signal 15 SIGTERM
612/666 gtk:reftest / reftest box-shadow-with-blend-mode.ui                          TIMEOUT         90.09s   killed by signal 15 SIGTERM
625/666 gtk:reftest / reftest css-match-inherit.ui                                   TIMEOUT         90.06s   killed by signal 15 SIGTERM
627/666 gtk:reftest / reftest css-match-inherit-different-state.ui                   TIMEOUT         90.08s   killed by signal 15 SIGTERM
631/666 gtk:reftest / reftest default-size-with-titlebar.ui                          TIMEOUT         90.07s   killed by signal 15 SIGTERM
633/666 gtk:reftest / reftest default-size-without-titlebar.ui                       TIMEOUT         90.10s   killed by signal 15 SIGTERM
653/666 gtk:reftest / reftest inscription-overflow.ui                                TIMEOUT         90.07s   killed by signal 15 SIGTERM
655/666 gtk:reftest / reftest inscription-overflow-multiline.ui                      TIMEOUT         90.06s   killed by signal 15 SIGTERM
656/666 gtk:reftest / reftest inscription-overflow-yalign.ui                         TIMEOUT         90.06s   killed by signal 15 SIGTERM
658/666 gtk:reftest / reftest label-wrap-word-char-natural-size.ui                   TIMEOUT         90.06s   killed by signal 15 SIGTERM
659/666 gtk:reftest / reftest late-binding.ui                                        TIMEOUT         90.06s   killed by signal 15 SIGTERM
660/666 gtk:reftest / reftest late-property.ui                                       TIMEOUT         90.06s   killed by signal 15 SIGTERM
661/666 gtk:reftest / reftest messagedialog-secondarytext.ui                         TIMEOUT         90.06s   killed by signal 15 SIGTERM
662/666 gtk:reftest / reftest overlay-no-main-widget.ui                              TIMEOUT         90.13s   killed by signal 15 SIGTERM
663/666 gtk:reftest / reftest sibling-pseudoclasses.ui                               TIMEOUT         90.05s   killed by signal 15 SIGTERM
664/666 gtk:reftest / reftest style-properties-only-child.ui                         TIMEOUT         90.05s   killed by signal 15 SIGTERM
665/666 gtk:reftest / reftest treeview-crash-too-wide.ui                             TIMEOUT         90.05s   killed by signal 15 SIGTERM
666/666 gtk:reftest / reftest window-height-for-width.ui                             TIMEOUT         90.05s   killed by signal 15 SIGTERM

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https://bugs.launchpad.net/bugs/2119291

Title:
  mesa 25.0.7 SRU breaks gtk4 on s390x

Status in gtk4 package in Ubuntu:
  Fix Released
Status in mesa package in Ubuntu:
  New
Status in gtk4 source package in Noble:
  Fix Committed
Status in mesa source package in Noble:
  New

Bug description:
  [ Impact ]

  There are a number of gtk4 tests (build-time, and again at autopkgtest
  time) that are failing on s390x *only* when run in the combination of
  an updated mesa package (25.0.7-0ubuntu0.24.04.1).

  s390x is not a desktop platform, there are no desktop images for it,
  and gtk4 is not seeded in that architecture. While it would be best to
  fully understand what is making these tests fail, it's best to skip
  them for now in that architecture only, so that users in other
  architectures can benefit from the mesa and gtk4 updates.

  
  [ Test Plan ]
  The failure manifests itself in the build-time tests, which are again repeated at autopkgtest time. Therefore, the test plan consists of:
  - no build failure in any platform, and specifically s390x
  - no autopkgtest failure in any platform, and specifically s390x

  [ Where problems could occur ]

  This SRU is skipping certain gtk4 tests in s390x only, not reducing
  the test coverage in other architectures.

  Since the real cause of the test failures was not determined yet (and
  they only fail in combination with the new mesa update, as mentioned
  in the [impact] section), it's possible that by skipping these tests
  we are overlooking something that could be important down the line.

  [ Other Info ]

  There is already a long list of tests that are being skipped on s390x,
  and we are adding more tests to that list.

  [ Original Description ]

  First seen in the autopkgtest:

  https://autopkgtest.ubuntu.com/packages/g/gtk4/noble/s390x

  mesa 25.0.7-0ubuntu0.24.04.1 regresses the autopkgtest of gtk4
  4.14.5+ds-0ubuntu0.1 on s390x.

  42515s build-x11            PASS (superficial)
  42515s build-wayland        FAIL timed out
  42515s python3-gi-x11       PASS (superficial)
  42515s python3-gi-wayland   FAIL timed out
  42515s installed-tests-x11  PASS
  42515s installed-tests-wayland FAIL non-zero exit status 2
  42515s installed-tests-flaky-x11 FLAKY non-zero exit status 2
  42515s installed-tests-flaky-wayland FLAKY non-zero exit status 2

  The build-wayland and python3-gi-wayland autopkgtests do not terminate
  and eventually hit the time out.

  We have tried running the tests on a bigger instance (added to
  'big_packages') and have tried triggering the tests with 'all-
  proposed=1'.

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References

[Bug 2119291] [NEW] mesa 25.0.7 SRU breaks gtk4 on s390x
From: Graham Inggs, 2025-08-01