https://bugs.freedesktop.org/show_bug.cgi?id=106544
--- Comment #4 from Leonid Maksymchuk leonmaxx@gmail.com --- With my Radeon R9 Fury, I tested kernels down to 4.16.3 (latest version that does not crash) and found this commit to be a reason for errors:
https://patchwork.kernel.org/patch/10354647/
I built kernel 4.16.13 with this commit reverted, and it works nicely without errors in dmesg.