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(parent: a88de75) | 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 10:03:46 +0000 (12:03 +0200)
commitff2932ac8ee1ce6f66ba1b5017843c87492cd1a8
tree0241fd11a49603d51335b853d452b86883bf891ctree | snapshot
parenta88de75673e4f898564f90feb61e5d625e03c4c4commit | 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
Domain: System / Kernel;