Comment # 7 on bug 110701 from Christian Widmer

(In reply to Yury Zhuravlev from comment #6)
> 78e35df52aa2f7d770f929a0866a0faa89c261a9 radeonsi: update buffer descriptors
> in all contexts after buffer invalidation

That is the commit I identified in comment #1 as being responsible for my
issues. I would not be surprised if reverting that one makes your faults
disappear as well.