https://bugs.freedesktop.org/show_bug.cgi?id=81907
--- Comment #3 from Christoph Haag haagch@frickel.club --- Oh, the hang in comment 1 may have been my fault for running it with hyperz.
But without hyperz it hangs too, just less verbosely:
radeon 0000:01:00.0: ring 3 stalled for more than 10016msec radeon 0000:01:00.0: GPU lockup (waiting for 0x0000000000011c4a last fence id 0x0000000000011b2a on ring 3) [TTM] Buffer eviction failed