https://bugs.freedesktop.org/show_bug.cgi?id=62466
--- Comment #7 from Knut Andre Tidemann knut.tidemann@gmail.com --- That patch fixes the bug! I can reliably reproduce it in a few seconds without the patch, but I have not been able to get a GPU hang after I applied the patch!
I've only done minimal teseting, 5-10 min, but everything works great.