[Bug 90008] [BSW/SKL]Piglit sporadically causes system hang

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90008

--- Comment #6 from lu hua <huax.lu at intel.com> ---
Created attachment 115907
  --> https://bugs.freedesktop.org/attachment.cgi?id=115907&action=edit
dmesg

Test the latest mesa master branch and the latest drm-intel-nightly kernel on
BSW, Run full piglit, it causes GPU hang then system, attached the dmesg.

[  378.564175] [drm] GPU HANG: ecode 8:0:0x85dffdfb, in ext_framebuffer [7399],
reason: Ring hung, action: reset
[  378.564269] [drm:i915_reset_and_wakeup] resetting chip
[  378.565766] drm/i915: Resetting chip after gpu hang

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