--- zzzz-none-000/linux-3.10.107/net/l2tp/l2tp_debugfs.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/net/l2tp/l2tp_debugfs.c	2021-02-04 17:41:59.000000000 +0000
@@ -53,7 +53,7 @@
 
 static void l2tp_dfs_next_session(struct l2tp_dfs_seq_data *pd)
 {
-	pd->session = l2tp_session_get_nth(pd->tunnel, pd->session_idx, true);
+	pd->session = l2tp_session_find_nth(pd->tunnel, pd->session_idx);
 	pd->session_idx++;
 
 	if (pd->session == NULL) {
@@ -127,9 +127,10 @@
 
 #if IS_ENABLED(CONFIG_IPV6)
 		if (tunnel->sock->sk_family == AF_INET6) {
-			struct ipv6_pinfo *np = inet6_sk(tunnel->sock);
+			const struct ipv6_pinfo *np = inet6_sk(tunnel->sock);
+
 			seq_printf(m, " from %pI6c to %pI6c\n",
-				&np->saddr, &np->daddr);
+				&np->saddr, &tunnel->sock->sk_v6_daddr);
 		} else
 #endif
 		seq_printf(m, " from %pI4 to %pI4\n",
@@ -237,14 +238,10 @@
 	}
 
 	/* Show the tunnel or session context */
-	if (!pd->session) {
+	if (pd->session == NULL)
 		l2tp_dfs_seq_tunnel_show(m, pd->tunnel);
-	} else {
+	else
 		l2tp_dfs_seq_session_show(m, pd->session);
-		if (pd->session->deref)
-			pd->session->deref(pd->session);
-		l2tp_session_dec_refcount(pd->session);
-	}
 
 out:
 	return 0;