cipso: Fix data-races around sysctl.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Wed, 6 Jul 2022 23:40:01 +0000 (16:40 -0700)
committerDavid S. Miller <davem@davemloft.net>
Fri, 8 Jul 2022 11:10:33 +0000 (12:10 +0100)
commitdd44f04b9214adb68ef5684ae87a81ba03632250
tree851600a7ad0e88be1c4be1a4e6c2baaff72dd84e
parent310731e2f1611d1d13aae237abcf8e66d33345d5
cipso: Fix data-races around sysctl.

While reading cipso sysctl variables, they can be changed concurrently.
So, we need to add READ_ONCE() to avoid data-races.

Fixes: 446fda4f2682 ("[NetLabel]: CIPSOv4 engine")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Acked-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Documentation/networking/ip-sysctl.rst
net/ipv4/cipso_ipv4.c