Description: mm/memory.c: fix race when faulting a device private page
References:
Notes:
 bwh> This bug seems to be present in 4.19, though the affected code
 bwh> has changed a fair bit and the upstream fix won't be easy to
 bwh> backport.
Bugs:
upstream: released (6.1-rc1) [16ce101db85db694a91380aa4c89b25530871d33]
6.1-upstream-stable: N/A "Fixed before branch point"
5.10-upstream-stable: needed
4.19-upstream-stable: needed
sid: released (6.1.4-1)
6.1-bookworm-security: N/A "Fixed before branch point"
5.10-bullseye-security: needed
4.19-buster-security: needed