[Bug 91718] piglit.spec.arb_shader_image_load_store.invalid causes intermittent GPU HANG

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Tue Aug 25 10:06:41 PDT 2015


https://bugs.freedesktop.org/show_bug.cgi?id=91718

--- Comment #9 from Francisco Jerez <currojerez at riseup.net> ---
(In reply to Mark Janes from comment #8)
> I enabled arb_shader_image_load_store.invalid on all systems other than IVB.
> It looks to have created a hang on BYT
> 
> http://otc-mesa-ci.jf.intel.com/job/Leeroy/163544/
> 
> Let me know if you think "invalid" should be reliable on BYT.

Thank you.  I've been able to reproduce the hang locally today.  We seem to be
hitting another hardware bug in the "invalid/format mismatch" subtests causing
a GPU hang when a shader uses an untyped format but the bound surface is not of
type RAW.  It's likely to affect both IVB and BYT equally, but other gens
should be okay.  The attached workaround seems to fix it reliably on at least
IVB.

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