https://bugs.freedesktop.org/show_bug.cgi?id=102500
--- Comment #18 from Vedran Miletić vedran@miletic.net --- (In reply to Arek Ruśniak from comment #16)
Patch fixes issue. I've tried both staging-4.12 and staging-drm-next branches. Thanks Christian
PS. It will be nice if Vedran could confirmed this for Vega before we close.
I can confirm that after applying the patch the issue doesn't occur for me. (I hope that's enough, I can't claim more than that since I have done 2-3 upgrades of mesa/llvm since I last tested the broken kernel.)