[Bug 87571] New: [drm] stuck on render ring

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87571

            Bug ID: 87571
           Summary: [drm] stuck on render ring
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: kramaphone at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 111133
  --> https://bugs.freedesktop.org/attachment.cgi?id=111133&action=edit
gpu crash dump

$ dmesg
[ 5990.693243] [drm] stuck on render ring
[ 5990.693249] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[ 5990.693250] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[ 5990.693250] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[ 5990.693251] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[ 5990.693252] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.

$ uname -a
Linux rama 3.13.0-43-generic #72-Ubuntu SMP Mon Dec 8 19:35:06 UTC 2014 x86_64
x86_64 x86_64 GNU/Linux
(This is Ubuntu 14.04.1 LTS.)

$ sudo cat /sys/class/drm/card0/error > ~/gpu.dump

gpu.dump is attached for a review. Please lmk if anything else is needed.

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