mac80211: fix statistics leak if dev_alloc_name() fails
authorJohannes Berg <johannes.berg@intel.com>
Tue, 26 Apr 2016 11:47:08 +0000 (13:47 +0200)
committerJohannes Berg <johannes.berg@intel.com>
Wed, 27 Apr 2016 08:06:58 +0000 (10:06 +0200)
In the case that dev_alloc_name() fails, e.g. because the name was
given by the user and already exists, we need to clean up properly
and free the per-CPU statistics. Fix that.

Cc: stable@vger.kernel.org
Fixes: 5a490510ba5f ("mac80211: use per-CPU TX/RX statistics")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
net/mac80211/iface.c

index 453b4e7417804105cb136e2ec7f4c57a39392db3..e1cb22c16530377cc8ce0d9bf907bbd662f18337 100644 (file)
@@ -1761,7 +1761,7 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name,
 
                ret = dev_alloc_name(ndev, ndev->name);
                if (ret < 0) {
-                       free_netdev(ndev);
+                       ieee80211_if_free(ndev);
                        return ret;
                }
 
@@ -1847,7 +1847,7 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name,
 
                ret = register_netdevice(ndev);
                if (ret) {
-                       free_netdev(ndev);
+                       ieee80211_if_free(ndev);
                        return ret;
                }
        }