packet: exit_net cleanup check added

vaverin · davem330 · commit 669f8f1a5c68 · 2017-11-14T15:45:52.000+09:00
Be sure that packet.sklist initialized in net_init hook was return
to initial state.

Signed-off-by: Vasily Averin &lt;vvs@virtuozzo.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
@@ -4560,6 +4560,7 @@ static int __net_init packet_net_init(struct net *net)
 static void __net_exit packet_net_exit(struct net *net)
 {
 	remove_proc_entry("packet", net->proc_net);
+	WARN_ON_ONCE(!hlist_empty(&net->packet.sklist));
 }
 
 static struct pernet_operations packet_net_ops = {

Original file line number	Diff line number	Diff line change
`@@ -4560,6 +4560,7 @@ static int __net_init packet_net_init(struct net *net)`
`4560`	`4560`	`static void __net_exit packet_net_exit(struct net *net)`
`4561`	`4561`	`{`
`4562`	`4562`	`remove_proc_entry("packet", net->proc_net);`
	`4563`	`+ WARN_ON_ONCE(!hlist_empty(&net->packet.sklist));`
`4563`	`4564`	`}`
`4564`	`4565`
`4565`	`4566`	`static struct pernet_operations packet_net_ops = {`