R9 285 kernel agd5f amdgpu with or without patches from 

https://bugs.freedesktop.org/show_bug.cgi?id=91141 

mesa is agd5f with a few patches from mainline to build with current llvm.

ddx is git against older xorg.

Simpler games like openarena don't lock.

Valley settings ultra, 8xAA, fullscreen 1920x1080.

Doesn't show in this log but I've also seen some

 [drm:amdgpu_gem_va_ioctl [amdgpu]] *ERROR* Couldn't update BO_VA (-35)

around the lock/reset on previous tests.