linux-kernel - [PATCH net] vxlan: fix error return code in __vxlan_dev

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Message-ID: <1606903122-2098-1-git-send-email-zhangchangzhong@huawei.com>
Date:   Wed, 2 Dec 2020 17:58:42 +0800
From:   Zhang Changzhong <zhangchangzhong@...wei.com>
To:     <davem@...emloft.net>, <kuba@...nel.org>, <ap420073@...il.com>
CC:     <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH net] vxlan: fix error return code in __vxlan_dev_create()

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: 0ce1822c2a08 ("vxlan: add adjacent link to limit depth level")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@...wei.com>
---
 drivers/net/vxlan.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 1a557ae..a506872 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -3877,8 +3877,10 @@ static int __vxlan_dev_create(struct net *net, struct net_device *dev,
 
 	if (dst->remote_ifindex) {
 		remote_dev = __dev_get_by_index(net, dst->remote_ifindex);
-		if (!remote_dev)
+		if (!remote_dev) {
+			err = -ENODEV;
 			goto errout;
+		}
 
 		err = netdev_upper_dev_link(remote_dev, dev, extack);
 		if (err)
-- 
2.9.5