1 files changed, 6 insertions, 2 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index a1607bc0cd4c..582963077877 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -903,7 +903,11 @@ int dev_change_name(struct net_device *dev, char *newname)
                 strlcpy(dev->name, newname, IFNAMSIZ);
 
 rollback:
-        device_rename(&dev->dev, dev->name);
+        err = device_rename(&dev->dev, dev->name);
+        if (err) {
+                memcpy(dev->name, oldname, IFNAMSIZ);
+                return err;
+        }
 
         write_lock_bh(&dev_base_lock);
         hlist_del(&dev->name_hlist);
@@ -3137,7 +3141,7 @@ int dev_change_flags(struct net_device *dev, unsigned flags)
          *      Load in the correct multicast list now the flags have changed.
          */
 
-        if (dev->change_rx_flags && (dev->flags ^ flags) & IFF_MULTICAST)
+        if (dev->change_rx_flags && (old_flags ^ flags) & IFF_MULTICAST)
                 dev->change_rx_flags(dev, IFF_MULTICAST);
 
         dev_set_rx_mode(dev);