2 files changed, 9 insertions, 3 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index 08dec6eb922b..e0489ca731c5 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -977,7 +977,12 @@ int register_netdevice_notifier(struct notifier_block *nb)
 
 int unregister_netdevice_notifier(struct notifier_block *nb)
 {
-        return notifier_chain_unregister(&netdev_chain, nb);
+        int err;
+
+        rtnl_lock();
+        err = notifier_chain_unregister(&netdev_chain, nb);
+        rtnl_unlock();
+        return err;
 }
 
 /**
diff --git a/net/core/sock.c b/net/core/sock.c
index 1a7e6eac90b0..e110b9004147 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -404,8 +404,9 @@ set_rcvbuf:
                         if (!valbool) {
                                 sk->sk_bound_dev_if = 0;
                         } else {
-                                if (optlen > IFNAMSIZ) 
-                                        optlen = IFNAMSIZ; 
+                                if (optlen > IFNAMSIZ - 1)
+                                        optlen = IFNAMSIZ - 1;
+                                memset(devname, 0, sizeof(devname));
                                 if (copy_from_user(devname, optval, optlen)) {
                                         ret = -EFAULT;
                                         break;