On Tue, Jun 01, 2021 at 12:24:09PM +0300, Dan Carpenter wrote: > We're supposed to be holding the "vmf->ptl" spin_lock when we goto > out_map. The lock is dropped after if finishes cleaning up. > > Fixes: 9aff7b33c74a ("mm: thp: refactor NUMA fault handling") > Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Ouch. Acked-by: Mel Gorman <mgorman@xxxxxxx> However, that git commit is not stable. Instead of Fixes: I would suggest renaming the patch to "mm: thp: refactor NUMA fault handling -fix" and replacing Fixes with "This patch is a fix to the mmotm patch mm-thp-refactor-numa-fault-handling.patch". Andrew usually slots that into the correct place in his quilt series and collapses the fixes before sending to Linus which works better with bisection. -- Mel Gorman SUSE Labs