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netfilter: nf_tables: prefer kfree_rcu(ptr, rcu) variant

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[ Upstream commit ae089831ff ]

While kfree_rcu(ptr) _is_ supported, it has some limitations.

Given that 99.99% of kfree_rcu() users [1] use the legacy
two parameters variant, and @catchall objects do have an rcu head,
simply use it.

Choice of kfree_rcu(ptr) variant was probably not intentional.

[1] including calls from net/netfilter/nf_tables_api.c

Fixes: aaa31047a6 ("netfilter: nftables: add catch-all set element support")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Eric Dumazet
2022-02-22 10:13:31 -08:00
committed by Greg Kroah-Hartman
parent 4ed52fbeb9
commit 9920d99cc8
1 changed files with 2 additions and 2 deletions
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4
net/netfilter/nf_tables_api.c
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@@ -4486,7 +4486,7 @@ static void nft_set_catchall_destroy(const struct nft_ctx *ctx,
list_for_each_entry_safe(catchall, next, &set->catchall_list, list) {
list_del_rcu(&catchall->list);
nft_set_elem_destroy(set, catchall->elem, true);
kfree_rcu(catchall);
kfree_rcu(catchall, rcu);
}
}
@@ -5653,7 +5653,7 @@ static void nft_setelem_catchall_remove(const struct net *net,
list_for_each_entry_safe(catchall, next, &set->catchall_list, list) {
if (catchall->elem == elem->priv) {
list_del_rcu(&catchall->list);
kfree_rcu(catchall);
kfree_rcu(catchall, rcu);
break;
}
}