Thread (2 messages) flat view 2 messages, 2 authors, 2025-11-17
STALE260d

[PATCH linux] netfilter: conntrack: Add missing modification about data-race around ct->timeout

From: Chenguang Zhao <hidden>
Date: 2025-11-17 08:56:50
Also in: lkml, netfilter-devel
Subsystem: netfilter, networking [general], the rest · Maintainers: Pablo Neira Ayuso, Florian Westphal, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds

Add missing modification about data-race around ct->timeout

Signed-off-by: Chenguang Zhao <redacted>

Fixes: 802a7dc5cf1b ("netfilter: conntrack: annotate data-races around ct->timeout")
---
 net/netfilter/nf_conntrack_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index 344f88295976..0b26d53f3b65 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -1297,7 +1297,7 @@ __nf_conntrack_confirm(struct sk_buff *skb)
 	/* Timeout is relative to confirmation time, not original
 	   setting time, otherwise we'd get timer wrap in
 	   weird delay cases. */
-	ct->timeout += nfct_time_stamp;
+	WRITE_ONCE(ct->timeout, ct->timeout + nfct_time_stamp);
 
 	__nf_conntrack_insert_prepare(ct);
 
-- 
2.25.1
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