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(parent: c677514) | patch
tcp: Fix data-races around sysctl_tcp_dsack.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Wed, 20 Jul 2022 16:50:12 +0000 (09:50 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 3 Aug 2022 10:03:43 +0000 (12:03 +0200)
commit1fbf6775c7c9db2a067070d994f3be21b6d44237
tree550e4f6311ca726c3fcebaaa7ef0b9e966de1c33tree | snapshot
parentc6775142bfe8d00623fb0d1759708778437d9d30commit | diff
tcp: Fix data-races around sysctl_tcp_dsack.

commit 92ffadf97267a2ae8eefa7b86a40d3463ef06820 upstream.

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

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
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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