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authorEric Dumazet <edumazet@google.com>2019-11-05 14:11:53 -0800
committerDavid S. Miller <davem@davemloft.net>2019-11-06 16:14:48 -0800
commit288efe8606b62d0753ba6722b36ef241877251fd (patch)
tree37cbacf02e504fafe20062ae25909a4ecfc4c807 /net/sched
parent7976a11b30929871a4c84c3c406d7681a3dbcc10 (diff)
downloadlinux-288efe8606b62d0753ba6722b36ef241877251fd.tar.bz2
net: annotate lockless accesses to sk->sk_ack_backlog
sk->sk_ack_backlog can be read without any lock being held. 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 'net/sched')
-rw-r--r--net/sched/em_meta.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sched/em_meta.c b/net/sched/em_meta.c
index 3177dcb17316..ebb6e2430861 100644
--- a/net/sched/em_meta.c
+++ b/net/sched/em_meta.c
@@ -521,7 +521,7 @@ META_COLLECTOR(int_sk_ack_bl)
*err = -1;
return;
}
- dst->value = sk->sk_ack_backlog;
+ dst->value = READ_ONCE(sk->sk_ack_backlog);
}
META_COLLECTOR(int_sk_max_ack_bl)