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netfilter: ipset: fix order of kfree_rcu() and rcu_assign_pointer()

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[ Upstream commit 3ca9982a88 ]

Sashiko pointed out that kfree_rcu() was called before
rcu_assign_pointer() in handling the comment extension.
Fix the order so that rcu_assign_pointer() called first.

Fixes: b57b2d1fa5 ("netfilter: ipset: Prepare the ipset core to use RCU at set level")
Signed-off-by: Jozsef Kadlecsik <kadlec@netfilter.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jozsef Kadlecsik
2026-07-24 16:03:20 +02:00
committed by Greg Kroah-Hartman
parent 6329d3a9af
commit d01b4b471f
1 changed files with 2 additions and 2 deletions
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net/netfilter/ipset/ip_set_core.c
+2 -2
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@@ -351,8 +351,8 @@ ip_set_init_comment(struct ip_set *set, struct ip_set_comment *comment,
if (unlikely(c)) {
set->ext_size -= sizeof(*c) + strlen(c->str) + 1;
kfree_rcu(c, rcu);
rcu_assign_pointer(comment->c, NULL);
kfree_rcu(c, rcu);
}
if (!len)
return;
@@ -393,8 +393,8 @@ ip_set_comment_free(struct ip_set *set, void *ptr)
if (unlikely(!c))
return;
set->ext_size -= sizeof(*c) + strlen(c->str) + 1;
kfree_rcu(c, rcu);
rcu_assign_pointer(comment->c, NULL);
kfree_rcu(c, rcu);
}
typedef void (*destroyer)(struct ip_set *, void *);