https://bugs.freedesktop.org/show_bug.cgi?id=105401
--- Comment #3 from Andrey Grodzovsky andrey.grodzovsky@amd.com --- Please check your libdrm and verify it's version is 2.4.91
https://lists.freedesktop.org/archives/dri-devel/2018-March/168156.html
I believe it should be fixed by
amdgpu: Fix mistake in initial hole size calculation.
Andrey