https://bugs.freedesktop.org/show_bug.cgi?id=80419
--- Comment #75 from Michel Dänzer michel@daenzer.net --- (In reply to Kamil Páral from comment #74)
There's this line: (EE) 2: /lib64/libc.so.6 (__memcpy_avx_unaligned+0x1ab) [0x7fe7ee3ffafb] which is the same function that I reported to be crashing in apitrace: https://github.com/apitrace/apitrace/issues/407
Is this just a coincidence, or these two bugs are related (or the very same)?
Presumably coincidence. The apitrace crashes are segmentation faults, i.e. probably due to overrunning some buffer[0]. The Xorg crash is a bus error, which is probably fallout of the GPU hang.
That said, we could probably confirm either way if we could look at a gdb backtrace of the Xorg crash.
[0] FWIW, replaying the apitrace with valgrind on llvmpipe, I'm also seeing invalid memory access, so it might be a bug in apitrace or some shared Gallium / Mesa code rather than in the radeonsi driver.