[NET]: Check RTNL status in unregister_netdevice

The caller must hold the RTNL so let's check it in unregister_netdevice.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/dev.c b/net/core/dev.c
index 4ced3836690ba950ddcffbc027107987bfdb3964..7153e94f50ad88c701a39f385ffd71b2ac6b5517 100644 (file)
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -3971,6 +3971,8 @@ void synchronize_net(void)
 
 void unregister_netdevice(struct net_device *dev)
 {
+       ASSERT_RTNL();
+
        rollback_registered(dev);
        /* Finish processing unregister after unlock */
        net_set_todo(dev);