[Bug 89033] New: [SNB]igt/kms_flip some some cases hang and cause system unable to reboot.

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sun Feb 8 21:36:04 PST 2015


https://bugs.freedesktop.org/show_bug.cgi?id=89033

            Bug ID: 89033
           Summary: [SNB]igt/kms_flip some some cases hang and cause
                    system unable to reboot.
           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: hengx.ding at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 113268
  --> https://bugs.freedesktop.org/attachment.cgi?id=113268&action=edit
dmesg

==System Environment==
--------------------------
Regression: not sure, this issue is not 100% reproducible.
Non-working platforms: SNB
==kernel==
--------------------------
nightly-2015-02-09/b4442ee4e150506cebeee72249efc566c5f14bbe

==Bug detailed description==
--------------------------
Some of kms_flip subcases will hang, the white block stop fliping on monitor,
and the case is unable to be stoped with ctrl+c or kill command. If you tried
to reboot it, the ssh connection may lost, seems the system is hang. This issue
is not 100% reproducible, so the affect case maybe more than listed.

Affected cases:

igt/kms_flip/plain-flip-fb-recreate
igt/kms_flip/2x-plain-flip-fb-recreate-interruptible


==Reproduce steps==
---------------------------- 
1. ./kms_flip --run-subtest plain-flip-fb-recreate

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