https://bugzilla.kernel.org/show_bug.cgi?id=204181
--- Comment #20 from Nicholas Kazlauskas (nicholas.kazlauskas@amd.com) --- I haven't been able to reproduce this on my setup yet with xf86-video-amdgpu on Arch's 5.2.2 kernel. I don't see anything really missing between that and staging that could affect this issue.
It would probably help to have a dmesg log with drm.debug=0x54 - this will enable DRM atomic state debug prints.
You'll probably need to increase your log buffer size to get the state relevant to the crash.
ie: " log_buf_len=64M drm.debug=84 "