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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Hulk Robot <hulkci@huawei.com>,
        Zhang Changzhong <zhangchangzhong@huawei.com>,
        Jakub Kicinski <kuba@kernel.org>
Subject: [PATCH 5.9 30/46] vxlan: fix error return code in __vxlan_dev_create()
Date:   Sun,  6 Dec 2020 12:17:38 +0100
Message-Id: <20201206111557.909037426@linuxfoundation.org>
In-Reply-To: <20201206111556.455533723@linuxfoundation.org>
References: <20201206111556.455533723@linuxfoundation.org>
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From: Zhang Changzhong <zhangchangzhong@huawei.com>

[ Upstream commit 832e09798c261cf58de3a68cfcc6556408c16a5a ]

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@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Link: https://lore.kernel.org/r/1606903122-2098-1-git-send-email-zhangchangzhong@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/vxlan.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -3881,8 +3881,10 @@ static int __vxlan_dev_create(struct net
 
 	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)