From: Taehee Yoo <[email protected]>
[ Upstream commit d4e7df16567b80836a78d31b42f1a9355a636d67 ]
rbnode in insert_tree() is rcu protected pointer.
So, in order to handle this pointer, _rcu function should be used.
rb_link_node_rcu() is a rcu version of rb_link_node().
Fixes: 34848d5c896e ("netfilter: nf_conncount: Split insert and traversal")
Signed-off-by: Taehee Yoo <[email protected]>
Signed-off-by: Pablo Neira Ayuso <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>
---
net/netfilter/nf_conncount.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/netfilter/nf_conncount.c b/net/netfilter/nf_conncount.c
index b6d0f6deea86..9cd180bda092 100644
--- a/net/netfilter/nf_conncount.c
+++ b/net/netfilter/nf_conncount.c
@@ -427,7 +427,7 @@ insert_tree(struct net *net,
count = 1;
rbconn->list.count = count;
- rb_link_node(&rbconn->node, parent, rbnode);
+ rb_link_node_rcu(&rbconn->node, parent, rbnode);
rb_insert_color(&rbconn->node, root);
out_unlock:
spin_unlock_bh(&nf_conncount_locks[hash % CONNCOUNT_LOCK_SLOTS]);
--
2.19.1
