raw: Fix a data-race around sysctl_raw_l3mdev_accept.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Tue, 12 Jul 2022 00:15:29 +0000 (17:15 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 21 Jul 2022 19:24:27 +0000 (21:24 +0200)
commit46e9c46203fd4676720ddca0fef7eff26826648e
tree0abacfeb1fa19c9c5add7408cf654f31ceae12e7
parent8d7a13654a988a8433bfbe3474f83b82c0dea6ab
raw: Fix a data-race around sysctl_raw_l3mdev_accept.

[ Upstream commit 1dace014928e6e385363032d359a04dee9158af0 ]

While reading sysctl_raw_l3mdev_accept, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.

Fixes: 6897445fb194 ("net: provide a sysctl raw_l3mdev_accept for raw socket lookup with VRFs")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
include/net/raw.h