tcp: Fix data-races around sysctl_tcp_base_mss.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Wed, 13 Jul 2022 20:52:01 +0000 (13:52 -0700)
committerDavid S. Miller <davem@davemloft.net>
Fri, 15 Jul 2022 10:49:55 +0000 (11:49 +0100)
commit88d78bc097cd8ebc6541e93316c9d9bf651b13e8
treec76a6a482e4b6238c272aac7170c9b99491f3629
parentf47d00e077e7d61baf69e46dde3210c886360207
tcp: Fix data-races around sysctl_tcp_base_mss.

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

Fixes: 5d424d5a674f ("[TCP]: MTU probing")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/tcp_output.c
net/ipv4/tcp_timer.c