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(parent: 5037ca9) | patch
tcp: Fix data-races around sysctl_tcp_recovery.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Mon, 18 Jul 2022 17:26:46 +0000 (10:26 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 29 Jul 2022 15:25:22 +0000 (17:25 +0200)
commita31e2d0cb5cfa2aae3144cac04f25031d5d20fb4
treeb27b2cf98fcf3c122b5a9400495dda531a6cd1cetree | snapshot
parent5037ca9e4b169cc9aed0174d658c3d81fdaf8ea5commit | diff
tcp: Fix data-races around sysctl_tcp_recovery.

[ Upstream commit e7d2ef837e14a971a05f60ea08c47f3fed1a36e4 ]

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

Fixes: 4f41b1c58a32 ("tcp: use RACK to detect losses")
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_input.c diff | blob | history
net/ipv4/tcp_recovery.c diff | blob | history
Domain: System / Kernel;