Comment # 2 on bug 95659 from Tiger

(In reply to Michel Dänzer from comment #1)
> Did this also happen with older versions of Mesa and/or the kernel?

I've done the test with Mesa 10.3.0 (xorg-server-1.16,libdrm-2.56) and
kernel-3.14, the GPU lockup does not occur. 
I've also tried with Mesa 10.3.0 and kernel-4.4, the GPU lockup still not
occurs. So It looks like it have a relationship with the mesa.