netdev: exit_net cleanup check added

Be sure that dev_base_head list initialized in net_init hook was return to initial state Signed-off-by: Vasily Averin <[email protected]> Signed-off-by: David S. Miller <[email protected]>
thomasl · Nov 14, 2017 · ee21b18 · ee21b18
1 parent 0e4ec5a
commit ee21b18
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/net/core/dev.c b/net/core/dev.c
@@ -8667,6 +8667,8 @@ static void __net_exit netdev_exit(struct net *net)
 {
 	kfree(net->dev_name_head);
 	kfree(net->dev_index_head);
+	if (net != &init_net)
+		WARN_ON_ONCE(!list_empty(&net->dev_base_head));
 }
 
 static struct pernet_operations __net_initdata netdev_net_ops = {