netdev - [PATCH 1/2] xen-netfront: Fix mismatched rtnl

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Message-ID: <20180621130021.27029-2-ross.lagerwall@citrix.com>
Date:   Thu, 21 Jun 2018 14:00:20 +0100
From:   Ross Lagerwall <ross.lagerwall@...rix.com>
To:     <netdev@...r.kernel.org>
CC:     Ross Lagerwall <ross.lagerwall@...rix.com>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Juergen Gross <jgross@...e.com>,
        "David S. Miller" <davem@...emloft.net>,
        <xen-devel@...ts.xenproject.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH 1/2] xen-netfront: Fix mismatched rtnl_unlock

Fixes: f599c64fdf7d ("xen-netfront: Fix race between device setup and open")
Reported-by: Ben Hutchings <ben.hutchings@...ethink.co.uk>
Signed-off-by: Ross Lagerwall <ross.lagerwall@...rix.com>
---
 drivers/net/xen-netfront.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
index 922ce0a..ee4cb6c 100644
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -1810,7 +1810,7 @@ static int talk_to_netback(struct xenbus_device *dev,
 	err = xen_net_read_mac(dev, info->netdev->dev_addr);
 	if (err) {
 		xenbus_dev_fatal(dev, err, "parsing %s/mac", dev->nodename);
-		goto out;
+		goto out_unlocked;
 	}
 
 	rtnl_lock();
@@ -1925,6 +1925,7 @@ static int talk_to_netback(struct xenbus_device *dev,
 	xennet_destroy_queues(info);
  out:
 	rtnl_unlock();
+out_unlocked:
 	device_unregister(&dev->dev);
 	return err;
 }
-- 
2.9.5