From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Tue, 10 Jun 2014 08:53:00 +0000 (+0200)
Subject: netfilter: nf_tables: use RCU-safe list insertion when replacing rules
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5bc5c307653cbf8fe9da6cbd8ae6c6bd5b86ff4b;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

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 624e083125b9..ba37c10e5139 100644
--- 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;