https://bugs.freedesktop.org/show_bug.cgi?id=88978
--- Comment #15 from Daniel Scharrer daniel@constexpr.org --- Created attachment 116176 --> https://bugs.freedesktop.org/attachment.cgi?id=116176&action=edit 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.