phonet: exit_net cleanup check added

vaverin · davem330 · commit ae61e8cd061d · 2017-11-14T15:45:53.000+09:00
Be sure that pndevs.list 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/phonet/pn_dev.c b/net/phonet/pn_dev.c
@@ -331,7 +331,10 @@ static int __net_init phonet_init_net(struct net *net)
 
 static void __net_exit phonet_exit_net(struct net *net)
 {
+	struct phonet_net *pnn = phonet_pernet(net);
+
 	remove_proc_entry("phonet", net->proc_net);
+	WARN_ON_ONCE(!list_empty(&pnn->pndevs.list));
 }
 
 static struct pernet_operations phonet_net_ops = {

Original file line number	Diff line number	Diff line change
`@@ -331,7 +331,10 @@ static int __net_init phonet_init_net(struct net *net)`
`331`	`331`
`332`	`332`	`static void __net_exit phonet_exit_net(struct net *net)`
`333`	`333`	`{`
	`334`	`+ struct phonet_net *pnn = phonet_pernet(net);`
	`335`	`+`
`334`	`336`	`remove_proc_entry("phonet", net->proc_net);`
	`337`	`+ WARN_ON_ONCE(!list_empty(&pnn->pndevs.list));`
`335`	`338`	`}`
`336`	`339`
`337`	`340`	`static struct pernet_operations phonet_net_ops = {`