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(parent: aabe943) | patch
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)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 29 Jul 2022 15:25:14 +0000 (17:25 +0200)
commit4d7dea651b7fe0322be95054f64e3711afccc543
tree91cc6cdefe843c50230fd6ded28b073d1e016075tree | snapshot
parentaabe9438fdfe004e021d5a206227ec105dbe2416commit | diff
tcp: Fix data-races around sysctl_tcp_base_mss.

[ Upstream commit 88d78bc097cd8ebc6541e93316c9d9bf651b13e8 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
net/ipv4/tcp_output.c diff | blob | history
net/ipv4/tcp_timer.c diff | blob | history
Domain: System / Kernel;