Created attachment 116176 [details]
dmesg log

Here is the dmesg log with Linux 4.0.4-gentoo and LLVM patched to disable the
machine scheduler for SI, after replaying both sarnex' and my trace. I don't
have an unpatched LLVM build right now, but don't remember the dmesg output
being different.

The log is compressed because there are lots of GPU faults at the end (bug
#87278) which pushed the uncompressed log over the attachment size limit - not
sure if you wanted those or just the startup part.

Bug #90378 has the dmesg output for L4D2 including GPU lockups with an
unpatched (but older revision on) LLVM and 4.0.1-gentoo in attachment 115653 [details].