https://bugzilla.kernel.org/show_bug.cgi?id=207383
--- Comment #11 from Duncan (1i5t5.duncan@cox.net) --- (In reply to Duncan from comment #10)
I did get an apparent graphics crash at the bisect-point above, but it didn't dump anything in the log this time
Got a gpf dump with amdgpu_atomic_commit_tail, confirming it's the same bug. Still a couple bisect steps to go, but the EFI candidate's out now, leaving only three (plus mediatek and nouveau, and an amdgpu that says it was doc fix only), and the current round is testing between 406 and the 6bf/17f pair so I should eliminate at least one of the three this round:
4064b9827 Peter Xu mm: allow VM_FAULT_RETRY for multiple times
6bfef2f91 Jason Gunthorpe mm/hmm: remove HMM_FAULT_SNAPSHOT
17ffdc482 Christoph Hellwig mm: simplify device private page handling in hmm_range_fault