[Bug 92751] Segmentation Fault in sna_put_zpixmap_blt (X server crash)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92751

--- Comment #15 from Chris Wilson <chris at chris-wilson.co.uk> ---
(In reply to Joe Peterson from comment #14)
> Created attachment 119454 [details]
> Xorg.0.log (tail) with debug=full
> 
> OK, cool. I've recompiled with --enable-debug=full, and although I could not
> attach gdb this time (other machine in-use at the moment), I did eventually
> get it to crash, and this attachment is the last 130K or so of the
> Xorg.0.log file. Note the traceback is different. I create these most easily
> now by playing a video and dragging the window around the screen.

commit b1015d4de0cb040dc47ebfbef1114b65269f6f36
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Fri Nov 6 20:41:03 2015 +0000

    sna/dri2: Protect against a new possible recursion during TearFree

    With the introduction of a new SwapEvent that may trigger a copy, we
    need to add another check for recursion from a TearFree flip event.

    References: https://bugs.freedesktop.org/show_bug.cgi?id=92751#c14
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

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