[Bug 68964] [ivb] Screen corruption in Chromium

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=68964

--- Comment #9 from Chris Wilson <chris at chris-wilson.co.uk> ---
It is possible that you install a different set of kernel headers which changes
how userspace behaves (enables different feature paths etc), I don't think X
has such subtleties. (The DDX does, but it uses local definitions to isolate
itself from random versions of the kernel headers.)

I would suggest that it is a timing issue - as far as I can tell it requires
reusing the wrong buffer at the wrong time to trigger.

I've gone ahead and pushed the patch the patch to disable MOCS for staging
upload buffers.

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