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(parent: 0728cac) | patch
tcp: Fix a data-race around sysctl_tcp_limit_output_bytes.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Wed, 20 Jul 2022 16:50:20 +0000 (09:50 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 3 Aug 2022 10:03:46 +0000 (12:03 +0200)
commit4f06f60cd4e33d1a78c1124d573c1b8b3c4fa02e
treecd51330195f933300c58110c02e2c7fd50f4d07dtree | snapshot
parent0728cacb4700d9fb93239dbf02a8b05390498d5ecommit | diff
tcp: Fix a data-race around sysctl_tcp_limit_output_bytes.

commit 38bdf925a45ac7e2eec3767ddde4772755ff7956 upstream.

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

Fixes: 6475c3971092 ("tcp: TCP Small Queues")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/ipv4/tcp_output.c diff | blob | history
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