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tcp: Fix a data-race around sysctl_tcp_frto.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Wed, 20 Jul 2022 16:50:15 +0000 (09:50 -0700)
committerDavid S. Miller <davem@davemloft.net>
Fri, 22 Jul 2022 11:06:17 +0000 (12:06 +0100)
commit706c6202a3589f290e1ef9be0584a8f4a3cc0507
treeddc3d4276299696711276fa93be5753c3586ed16
parent36eeee75ef0157e42fb6593dcc65daab289b559e
tcp: Fix a data-race around sysctl_tcp_frto.

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

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/tcp_input.c