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(parent: 0fc9357) | patch
tcp: Fix a data-race around sysctl_tcp_mtu_probe_floor.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Wed, 13 Jul 2022 20:52:03 +0000 (13:52 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 29 Jul 2022 15:25:14 +0000 (17:25 +0200)
commitcc36c37f5fe066c4708e623ead96dc8f57224bf5
tree974551cd30f1eadc62f329ca20cd0fcbeb49578ftree | snapshot
parent0fc9357282df055e30990b29f4b7afa53ab42cdbcommit | diff
tcp: Fix a data-race around sysctl_tcp_mtu_probe_floor.

[ Upstream commit 8e92d4423615a5257d0d871fc067aa561f597deb ]

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

Fixes: c04b79b6cfd7 ("tcp: add new tcp_mtu_probe_floor sysctl")
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_timer.c diff | blob | history
Domain: System / Kernel;