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(parent: 85225e6) | 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)
commit2afdbe7b8de84c28e219073a6661080e1b3ded48
tree1671e0ab895d93a261db38e1ef1e4c313537fd9ftree | snapshot
parent85225e6f0a76e6745bc841c9f25169c509b573d8commit | 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: 032ee4236954 ("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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