[Bug 87138] [IVB/HSW/BYT/BSW]Piglit sporadically causes GPU hang

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87138

--- Comment #13 from lu hua <huax.lu at intel.com> ---
Created attachment 113291
  --> https://bugs.freedesktop.org/attachment.cgi?id=113291&action=edit
dmesg

I reproduce this error manually on HSW. Run ./bin/textureGather fs r 0 uint
CubeArray repeat -auto -fbo 500 cycles. But no error stated collected in
i915_error_state

[root at x-hsw24 lh]#  dmesg -r|egrep "<[1-4]>"|grep drm
<3>[  152.763646] [drm:i915_hangcheck_elapsed [i915]] *ERROR* Hangcheck timer
elapsed... blitter ring idle


[root at x-hsw24 lh]# cat /sys/kernel/debug/dri/0/i915_error_state
no error state collected

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