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

[bugzilla-daemon at freedesktop.org]

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

--- Comment #11 from Tapani Pälli <lemody at gmail.com> ---
(In reply to Ben Widawsky from comment #10)
> Tapani, do you know if it's always the same test which is failing for you?
> The error state you posted may be fixed by
> 5ae6c7bfce5c9fb91ab6cef2ea74a39af091d5f6 in master. Just a hunch (EU 0 in
> the GS went out to lunch).

OK thanks, I've pulled drm-nightly and current Mesa at 065978d and will try to
reproduce.

As additional info for the GPU hangs, I've found that following tests cause
hangs reliably:

arb_gpu_shader5/execution/sampler_array_indexing/gs-weird-uniforms.shader_test
arb_gpu_shader5/execution/sampler_array_indexing/fs-weird-uniforms.shader_test

still not sure what makes the whole machine hang, will keep digging.

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