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(parent: 9ffb4fd) | patch
tcp: Fix a data-race around sysctl_tcp_challenge_ack_limit.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Wed, 20 Jul 2022 16:50:21 +0000 (09:50 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 3 Aug 2022 10:00:46 +0000 (12:00 +0200)
commitc37c7f35d7b707c2db656b0ab60419d4fb45b5c5
treeb63388e7171fbc150005ffbcfeebb3299f858afbtree
parent9ffb4fdfd80a93c7e2a5e3bc649cd3b219ecd2d9commit | diff
tcp: Fix a data-race around sysctl_tcp_challenge_ack_limit.

commit db3815a2fa691da145cfbe834584f31ad75df9ff upstream.

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

Fixes: 282f23c6ee34 ("tcp: implement RFC 5961 3.2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/ipv4/tcp_input.c diff | blob | history
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