[PATCH 5.10 0/1] xfrm: fix rcu lock in xfrm_notify_userpolicy()

[Fedor Pchelkin]

Syzkaller reports suspicious RCU usage in xfrm_set_default in 5.10 stable
releases. The problem has been fixed by the following patch which can be
cleanly applied to 5.10 branch.

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.