https://bugs.freedesktop.org/show_bug.cgi?id=104608
--- Comment #5 from Vedran Miletić vedran@miletic.net --- 4.15-rc8 on Kaveri after modprobe -r:
[ 215.855452] [drm] radeon: finishing device. [ 215.895091] [TTM] Finalizing pool allocator [ 215.895254] [TTM] Finalizing DMA pool allocator [ 215.895302] [TTM] Zone kernel: Used memory at exit: 2080 kiB [ 215.895305] [drm] radeon: ttm finalized
I'll close this bug after I get a chance to try it on RV635. Thanks!