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(parent: 414c3eb) | patch
tcp: Fix a data-race around sysctl_tcp_invalid_ratelimit.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Wed, 20 Jul 2022 16:50:26 +0000 (09:50 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 3 Aug 2022 09:59:39 +0000 (11:59 +0200)
commit68b7539206a1d7b37b934ca65b2a3d79eb280b09
tree86f9d47891a2cb892019499645e31f308d537bf4tree | snapshot
parent414c3eba0bdd96b931b3d1dbf22cc000e13f6a16commit | diff
tcp: Fix a data-race around sysctl_tcp_invalid_ratelimit.

[ Upstream commit f268daff545701ced663451d72eec2e050310257 ]

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

Fixes: 2b55d6e9dc1e ("tcp: helpers to mitigate ACK loops by rate-limiting out-of-window dupacks")
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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