Comment # 5 on bug 108771 from Christopher Snowhill

I have reproduced the freeze with the linked apitrace log, also on an Arch
Linux desktop. I had to install apitrace from git to replay the log, and it
freezes a few "seconds" into the cut scene.

Arch Linux 64b, Xorg 1.20.3, xf86-video-amdgpu 18.1.0, mesa 18.3.1, llvm 7.0.1,
with an i7 3770, a 480 and 32GB of RAM.

I've only tested with Linux 4.20, Arch default kernel.

Attaching the same two logs as OP.