https://bugs.freedesktop.org/show_bug.cgi?id=64776
--- Comment #2 from Alex Deucher agd5f@yahoo.com --- What you are seeing is a GPU reset. CB6 is writing to an invalid mapping at GPU page 0x00014EDB. Can you bisect the mesa 9.1 branch between 9.1.1 and 9.1.2 to identify the commit that broke it?