Description: mm/mempolicy: Take VMA lock before replacing policy
References:
 https://bugzilla.redhat.com/show_bug.cgi?id=2227244
 https://www.spinics.net/lists/stable-commits/msg310136.html
Notes:
 carnil> For 6.4.y fixed in 6.4.8.
 carnil> Commit fixes 5e31275cc997 ("mm: add per-VMA lock and helper
 carnil> functions to control it") in 6.4-rc1.
Bugs:
upstream: released (6.5-rc4) [6c21e066f9256ea1df6f88768f6ae1080b7cf509]
6.1-upstream-stable: N/A "Vulnerable code not present"
5.10-upstream-stable: N/A "Vulnerable code not present"
4.19-upstream-stable: N/A "Vulnerable code not present"
sid: released (6.4.11-1)
6.1-bookworm-security: N/A "Vulnerable code not present"
5.10-bullseye-security: N/A "Vulnerable code not present"
4.19-buster-security: N/A "Vulnerable code not present"