netdev - [PATCH net-next] netfilter: nf_tables: fix wrong pointer passed to PTR

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Date:   Thu, 19 Jan 2023 15:51:25 +0800
From:   Yang Yingliang <yangyingliang@...wei.com>
To:     <netfilter-devel@...r.kernel.org>, <coreteam@...filter.org>,
        <netdev@...r.kernel.org>
CC:     <pablo@...filter.org>, <kadlec@...filter.org>, <fw@...len.de>,
        <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
        <pabeni@...hat.com>, <ffmancera@...eup.net>
Subject: [PATCH net-next] netfilter: nf_tables: fix wrong pointer passed to PTR_ERR()

It should be 'chain' passed to PTR_ERR() in the error path
after calling nft_chain_lookup() in nf_tables_delrule().

Fixes: f80a612dd77c ("netfilter: nf_tables: add support to destroy operation")
Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
 net/netfilter/nf_tables_api.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 974b95dece1d..10264e98978b 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -3724,7 +3724,7 @@ static int nf_tables_delrule(struct sk_buff *skb, const struct nfnl_info *info,
 		chain = nft_chain_lookup(net, table, nla[NFTA_RULE_CHAIN],
 					 genmask);
 		if (IS_ERR(chain)) {
-			if (PTR_ERR(rule) == -ENOENT &&
+			if (PTR_ERR(chain) == -ENOENT &&
 			    NFNL_MSG_TYPE(info->nlh->nlmsg_type) == NFT_MSG_DESTROYRULE)
 				return 0;
 
-- 
2.25.1