[Bug 101422] New: GPU HANG: ecode 9:1:0xcab6fff5, in queue_encoding: [1120], reason: Ring hung, action: reset

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101422

            Bug ID: 101422
           Summary: GPU HANG: ecode 9:1:0xcab6fff5, in queue_encoding:
                    [1120], reason: Ring hung, action: reset
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: high
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: tadala.veerannababu at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org
     i915 features: GPU hang

Created attachment 131953
  --> https://bugs.freedesktop.org/attachment.cgi?id=131953&action=edit
gpu crash dump

Hi,

Observed this on Intel sky-lake platform while running multiple gstreamer
pipelines which includes decode, encode and display.

Linux custom image : Build using yocto. 
yocto version : krogoth
kernel version : 4.4
Hardware details :  Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz

More information on observed hang: 

Jun 13 06:32:04 64006A23AEE9 user.info kernel: [drm] stuck on bsd ring
Jun 13 06:32:04 64006A23AEE9 user.info kernel: [drm] GPU HANG: ecode
9:1:0xcab6fff5, in queue_encoding: [1120], reason: Ring hung, action: reset
Jun 13 06:32:04 64006A23AEE9 user.info kernel: [drm] GPU hangs can indicate a
bug anywhere in the entire gfx stack, including userspace.
Jun 13 06:32:04 64006A23AEE9 user.info kernel: [drm] Please file a _new_ bug
report on bugs.freedesktop.org against DRI -> DRM/Intel
Jun 13 06:32:04 64006A23AEE9 user.info kernel: [drm] drm/i915 developers can
then reassign to the right component if it's not a kernel issue.
Jun 13 06:32:04 64006A23AEE9 user.info kernel: [drm] The gpu crash dump is
required to analyze gpu hangs, so please always attach it.
Jun 13 06:32:04 64006A23AEE9 user.info kernel: [drm] GPU crash dump saved to
/sys/class/drm/card0/error
Jun 13 06:32:04 64006A23AEE9 user.notice kernel: drm/i915: Resetting chip after
gpu hang
Jun 13 06:32:04 64006A23AEE9 user.err kernel: [drm:i915_gem_init_hw] *ERROR*
Failed to initialize GuC, error -5 (ignored)

GPU crash dump also attached here.

Please let me know if you need more information. Thanks in advance.

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