[NET]: Take dev_base_lock when moving device name hash list entry

[deliverable/linux.git] / net / core / dev.c

diff --git a/net/core/dev.c b/net/core/dev.c
index 7bfea5e9030e1bf9d1b1612bb0cfdd7ced4dfbda..346cbf66534e3fce06abae3ec6cd536eb4d5526f 100644 (file)
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -839,8 +839,12 @@ int dev_change_name(struct net_device *dev, char *newname)
                strlcpy(dev->name, newname, IFNAMSIZ);
 
        device_rename(&dev->dev, dev->name);
+
+       write_lock_bh(&dev_base_lock);
        hlist_del(&dev->name_hlist);
        hlist_add_head(&dev->name_hlist, dev_name_hash(dev->name));
+       write_unlock_bh(&dev_base_lock);
+
        raw_notifier_call_chain(&netdev_chain, NETDEV_CHANGENAME, dev);
 
        return err;