[Bug 98317] New: [BSW]GPU HANG: ecode 8:0:0x7f5f7f7f, in ba [916], reason: Ring hung, action: reset

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98317

            Bug ID: 98317
           Summary: [BSW]GPU HANG: ecode 8:0:0x7f5f7f7f, in ba [916],
                    reason: Ring hung, action: reset
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: william.wu at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 127396
  --> https://bugs.freedesktop.org/attachment.cgi?id=127396&action=edit
dump log from /sys/class/drm/card0/error

When using libva-stack from 01.org to encoding, occasionally get this GPU hang
issue.
Fully log from dmesg as below shows:
[177082.427310] [drm] stuck on render ring 
[177082.438483] [drm] GPU HANG: ecode 8:0:0x7f5f7f7f, in ba [916], reason: Ring
hung, action: reset 
[177082.448325] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace. 
[177082.458809] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel 
[177082.468840] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue. 
[177082.479831] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it. 
[177082.489967] [drm] GPU crash dump saved to /sys/class/drm/card0/error 
[177082.499497] drm/i915: Resetting chip after gpu hang 
[177088.423173] [drm] stuck on render ring 
[177088.434265] [drm] GPU HANG: ecode 8:0:0x7f5f7f7f, in ba [916], reason: Ring
hung, action: reset 
[177088.444257] [drm:i915_context_is_banned] *ERROR* gpu hanging too fast,
banning! 
[177088.454664] drm/i915: Resetting chip after gpu hang 

Linux Kernel version: 4.2.0

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