Comment # 35 on bug 72785 from Luke-Jr

(In reply to Luke-Jr from comment #34)
> [  855.257659] radeon 0000:01:00.0: ring 3 stalled for more than 10000msec
> [  855.257670] radeon 0000:01:00.0: GPU lockup (waiting for
> 0x000000000000963c last fence id 0x000000000000963b on ring 3)

Side note: The keccak kernel gave this same problem - oddly enough, unrolling
the for loop going over each round fixed it O.o