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Diffstat (limited to 'net/core/dev.c')
-rw-r--r--net/core/dev.c18
1 files changed, 14 insertions, 4 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index d334446a8ea..ce88c0d3e35 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);
@@ -994,6 +998,8 @@ int dev_open(struct net_device *dev)
{
int ret = 0;
+ ASSERT_RTNL();
+
/*
* Is it already up?
*/
@@ -1060,6 +1066,8 @@ int dev_open(struct net_device *dev)
*/
int dev_close(struct net_device *dev)
{
+ ASSERT_RTNL();
+
might_sleep();
if (!(dev->flags & IFF_UP))
@@ -4480,17 +4488,19 @@ static void __net_exit default_device_exit(struct net *net)
rtnl_lock();
for_each_netdev_safe(net, dev, next) {
int err;
+ char fb_name[IFNAMSIZ];
/* Ignore unmoveable devices (i.e. loopback) */
if (dev->features & NETIF_F_NETNS_LOCAL)
continue;
/* Push remaing network devices to init_net */
- err = dev_change_net_namespace(dev, &init_net, "dev%d");
+ snprintf(fb_name, IFNAMSIZ, "dev%d", dev->ifindex);
+ err = dev_change_net_namespace(dev, &init_net, fb_name);
if (err) {
- printk(KERN_WARNING "%s: failed to move %s to init_net: %d\n",
+ printk(KERN_EMERG "%s: failed to move %s to init_net: %d\n",
__func__, dev->name, err);
- unregister_netdevice(dev);
+ BUG();
}
}
rtnl_unlock();