diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index 46d1e71..1bfc104 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -875,13 +875,16 @@ static int __inet_diag_dump(struct sk_buff *skb, struct netlink_callback *cb,
 		struct inet_diag_req_v2 *r, struct nlattr *bc)
 {
 	const struct inet_diag_handler *handler;
+	int err = 0;

 	handler = inet_diag_lock_handler(r->sdiag_protocol);
 	if (!IS_ERR(handler))
 		handler->dump(skb, cb, r, bc);
+	else
+		err = PTR_ERR(handler);
 	inet_diag_unlock_handler(handler);

-	return skb->len;
+	return err ? : skb->len;
 }

 static int inet_diag_dump(struct sk_buff *skb, struct netlink_callback *cb)