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(parent: 64bbd65) | patch
udp: Fix a data-race around sysctl_udp_l3mdev_accept.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Mon, 18 Jul 2022 17:26:43 +0000 (10:26 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 29 Jul 2022 15:14:14 +0000 (17:14 +0200)
commit5eb26f17c0c976d08a9a5814360079708b2b246f
tree8d0955b4d759aa2457a81a6754ca37e9106ee81atree | snapshot
parent64bbd65beae3630181baceaaf097c14e5e29d7cdcommit | diff
udp: Fix a data-race around sysctl_udp_l3mdev_accept.

[ Upstream commit 0a5df587c085dab628e2b84c92f65a65ab8be380 ]

While reading sysctl_udp_l3mdev_accept, it can be changed concurrently.
Thus, we need to add READ_ONCE() to its reader.

Fixes: 88c87d8d1629 ("net: Avoid receiving packets with an l3mdev on unbound UDP sockets")
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/udp.h diff | blob | history
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