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(parent: 559de8e) | patch
tcp: Fix a data-race around sysctl_tcp_notsent_lowat.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Fri, 15 Jul 2022 17:17:51 +0000 (10:17 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 29 Jul 2022 15:14:13 +0000 (17:14 +0200)
commit4fd14997a794af53ccfad0da719cf12e63077118
tree706b22ff0c08a2a7dd93f630e66593ecc60629aftree | snapshot
parent559de8e17debcdbc1fb64bb10fe92608792c6d15commit | diff
tcp: Fix a data-race around sysctl_tcp_notsent_lowat.

[ Upstream commit 45ff95121d90e1b1e5c8da548e6a36921aee7b09 ]

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

Fixes: 7f900a05a58b ("tcp: TCP_NOTSENT_LOWAT socket option")
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>
include/net/tcp.h diff | blob | history
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