diff options
| author |   Eric Dumazet <edumazet@google.com> | 2019-11-05 14:11:54 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-11-06 16:14:48 -0800 |
| commit | 099ecf59f05b5f30f42ebac0ab8cb94f9b18c90c (patch) | |
| tree | 06d62b7b24635bbb78ad38f24933cad260b5c346 /net/sched/em_meta.c | |
| parent | net: annotate lockless accesses to sk->sk_ack_backlog (diff) | |
| download | linux-dev-099ecf59f05b5f30f42ebac0ab8cb94f9b18c90c.tar.xz linux-dev-099ecf59f05b5f30f42ebac0ab8cb94f9b18c90c.zip | |
net: annotate lockless accesses to sk->sk_max_ack_backlog
sk->sk_max_ack_backlog can be read without any lock being held
at least in TCP/DCCP cases.
We need to use READ_ONCE()/WRITE_ONCE() to avoid load/store tearing
and/or potential KCSAN warnings.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | net/sched/em_meta.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sched/em_meta.c b/net/sched/em_meta.c index ebb6e2430861..d99966a55c84 100644 --- a/net/sched/em_meta.c +++ b/net/sched/em_meta.c @@ -532,7 +532,7 @@ META_COLLECTOR(int_sk_max_ack_bl) *err = -1; return; } - dst->value = sk->sk_max_ack_backlog; + dst->value = READ_ONCE(sk->sk_max_ack_backlog); } META_COLLECTOR(int_sk_prio) |