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(parent: bff091f) | 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)
committerDavid S. Miller <davem@davemloft.net>
Fri, 22 Jul 2022 11:06:18 +0000 (12:06 +0100)
commitf268daff545701ced663451d72eec2e050310257
tree1671e0ab895d93a261db38e1ef1e4c313537fd9ftree | snapshot
parentbff091fc535f5cbbea97e3b717384d447f1d62ebcommit | diff
tcp: Fix a data-race around sysctl_tcp_invalid_ratelimit.

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>
net/ipv4/tcp_input.c diff | blob | history
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