https://bugs.freedesktop.org/show_bug.cgi?id=108493
--- Comment #6 from Timur Kristóf venemo@msn.com --- On freenode in #dri-devel I got the suggestion to run unigine heaven with GALLIUM_DDEBUG="1000". So I just did that. It created 3 files, which I attached to this bug report along with the dmesg log that I took after the crash.
Some people suggested that this may be in fact an issue with radeonsi (and not amdgpu), if this is the case, please reassign this bug appropriately.