netfilter: nf_tables: use RCU-safe list insertion when replacing rules

The patch 5e94846 ("netfilter: nf_tables: add insert operation") did
not include RCU-safe list insertion when replacing rules.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 624e083..ba37c10 100644 (file)
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -1796,7 +1796,7 @@ static int nf_tables_newrule(struct sock *nlsk, struct sk_buff *skb,
                                goto err2;
                        }
                        nft_rule_disactivate_next(net, old_rule);
-                       list_add_tail(&rule->list, &old_rule->list);
+                       list_add_tail_rcu(&rule->list, &old_rule->list);
                } else {
                        err = -ENOENT;
                        goto err2;