[Bug 104297] [i965] Downward causes GPU hangs and misrendering on Haswell

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Jan 31 10:53:15 UTC 2018


https://bugs.freedesktop.org/show_bug.cgi?id=104297

--- Comment #28 from Darius Spitznagel <d.spitznagel at goodbytez.de> ---
Maybe this helps.

I've applied Kevins "GEM BO padding to find OOB buffer writes" patch series to
master ef272b161e05e8216f2d1f4df5023f3aed0ae4fa from here...
https://patchwork.freedesktop.org/series/35080/

Replayed my trace file in a loop for >30 minutes with...

INTEL_DEBUG=check_oob apitrace replay Downward.trace >> downward_debug.log 2>&1

The patch detected lots of "out-of-bounds write from brw_bo".

"cat downward_debug.log | grep Detected" shows them all.

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