| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.19 035/148] netfilter: nf_conncount: use rb_link_node_rcu() instead of rb_link_node() | Date | Fri, 11 Jan 2019 15:13:33 +0100 |
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4.19-stable review patch. If anyone has any objections, please let me know.
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[ 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 <ap420073@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- 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
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