If I see it corretly, this crash is connected to the patch for [CVE-2014-8092 
1/4], since the corresponding patch [1] adds this line 1959:

if (lengthProto >= (INT32_MAX / stuff->height))

which causes the arithmetic exception for me. I could try hotfixing it locally 
by checking for "stuff->height != 0".

As I am not familiar with this code, any opinions if this is a good idea?

Cheers,
Andreas

[1] 
http://cgit.freedesktop.org/xorg/xserver/commit/?id=eeae42d60bf3d5663ea088581f6c28a82cd17829


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