[Bug 101091] New: [BAT][BWR] igt at prime_vgem@basic-wait-default generated flip_done timed out

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101091

            Bug ID: 101091
           Summary: [BAT][BWR] igt at prime_vgem@basic-wait-default generated
                    flip_done timed out
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: martin.peres at free.fr
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

After running igt at prime_vgem@basic-wait-default on CI_DRM_2627, the machine
fi-bwr-2160 started outputting a "flip_done timed out" message in dmesg for all
the tests following it, until the machine hard hanged in
igt at drv_module_reload@basic-reload.

Here is the message:
[  532.977094] [drm:drm_atomic_helper_commit_cleanup_done] *ERROR*
[CRTC:30:pipe A] flip_done timed out

No other test before appeared to behave any differently from usual, aside from
the following tests happily passing:
 - igt at gem_exec_suspend@basic-s3
 - igt at gem_exec_suspend@basic-s4-devices

Full logs:
https://intel-gfx-ci.01.org/CI/CI_DRM_2627/fi-bwr-2160/igt@vgem_basic@dmabuf-fence.html

All the tests that failed (look at run 2627):
https://intel-gfx-ci.01.org/CI/fi-bwr-2160.html

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