[Bug 79053] [BDW userptr regression] Rendercheck dcoords causes X crash

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=79053

--- Comment #32 from Chris Wilson <chris at chris-wilson.co.uk> ---
(In reply to comment #31)
> Chris, based on this latest testing result, do you have any more ideas on
> this bug?

It's a stray write from the render ring (I believe) that clobbers the blt used
to transfer the results back. But no, I don't have enough to pin down where or
why?

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