linux-kernel - [PATCH net-next] rtnetlink: fix error code in rtnl

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Message-ID: <a2d20cd4-387a-4475-887c-bb7d0e88e25a@stanley.mountain>
Date: Fri, 6 Dec 2024 15:32:52 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Cong Wang <cong.wang@...edance.com>
Cc: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Simon Horman <horms@...nel.org>,
	Kuniyuki Iwashima <kuniyu@...zon.com>,
	Ido Schimmel <idosch@...dia.com>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH net-next] rtnetlink: fix error code in rtnl_newlink()

If rtnl_get_peer_net() fails, then propagate the error code.  Don't
return success.

Fixes: 48327566769a ("rtnetlink: fix double call of rtnl_link_get_net_ifla()")
Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
---
 net/core/rtnetlink.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index ab5f201bf0ab..ebcfc2debf1a 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -3972,8 +3972,10 @@ static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
 
 		if (ops->peer_type) {
 			peer_net = rtnl_get_peer_net(ops, data, extack);
-			if (IS_ERR(peer_net))
+			if (IS_ERR(peer_net)) {
+				ret = PTR_ERR(peer_net);
 				goto put_ops;
+			}
 			if (peer_net)
 				rtnl_nets_add(&rtnl_nets, peer_net);
 		}
-- 
2.45.2