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(parent: 27333ee) | patch
tcp: Fix a data-race around sysctl_tcp_min_rtt_wlen.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Wed, 20 Jul 2022 16:50:24 +0000 (09:50 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 3 Aug 2022 10:03:49 +0000 (12:03 +0200)
commit55a8752dc801b7770055dd63da8665631a14dfc6
treed189badaaa2a9bb0cb6508affd664254d1206442tree | snapshot
parent27333ee0c924546cd3dbcfee6f569a0cef659a97commit | diff
tcp: Fix a data-race around sysctl_tcp_min_rtt_wlen.

[ Upstream commit 4509ae5160b2decbd4fc8ddecadf403055cb3d24 ]

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

Fixes: 50bc59fc3444 ("tcp: track min RTT using windowed min-filter")
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
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