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netfilter: ipset: Correct rcu_dereference() call in ip_set_put_comment()

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[ Upstream commit 17b8b74c0f8dbf9b9e3301f9ca5b65dd1c079951 ]

The function is called when rcu_read_lock() is held and not
when rcu_read_lock_bh() is held.

Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jozsef Kadlecsik 2018-10-19 19:35:19 +02:00 committed by Greg Kroah-Hartman
parent 28bd72a726
commit 79f2eb5fde
1 changed files with 2 additions and 2 deletions
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4
include/linux/netfilter/ipset/ip_set_comment.h
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@ -43,11 +43,11 @@ ip_set_init_comment(struct ip_set *set, struct ip_set_comment *comment,
rcu_assign_pointer(comment->c, c);
}
/* Used only when dumping a set, protected by rcu_read_lock_bh() */
/* Used only when dumping a set, protected by rcu_read_lock() */
static inline int
ip_set_put_comment(struct sk_buff *skb, const struct ip_set_comment *comment)
{
struct ip_set_comment_rcu *c = rcu_dereference_bh(comment->c);
struct ip_set_comment_rcu *c = rcu_dereference(comment->c);
if (!c)
return 0;