--- zzzz-none-000/linux-4.9.218/net/l2tp/l2tp_debugfs.c	2020-04-02 15:20:41.000000000 +0000
+++ seale-7590ac-750/linux-4.9.218/net/l2tp/l2tp_debugfs.c	2022-11-30 09:46:20.000000000 +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_get_nth(pd->tunnel, pd->session_idx);
 	pd->session_idx++;
 
 	if (pd->session == NULL) {
@@ -145,8 +145,7 @@
 		   "");
 	seq_printf(m, " %d sessions, refcnt %d/%d\n", session_count,
 		   tunnel->sock ? atomic_read(&tunnel->sock->sk_refcnt) : 0,
-		   atomic_read(&tunnel->ref_count));
-
+		   refcount_read(&tunnel->ref_count));
 	seq_printf(m, " %08x rx %ld/%ld/%ld rx %ld/%ld/%ld\n",
 		   tunnel->debug,
 		   atomic_long_read(&tunnel->stats.tx_packets),
@@ -171,7 +170,7 @@
 		   "");
 	if (session->send_seq || session->recv_seq)
 		seq_printf(m, "   nr %hu, ns %hu\n", session->nr, session->ns);
-	seq_printf(m, "   refcnt %d\n", atomic_read(&session->ref_count));
+	seq_printf(m, "   refcnt %d\n", refcount_read(&session->ref_count));
 	seq_printf(m, "   config %d/%d/%c/%c/%s/%s %08x %u\n",
 		   session->mtu, session->mru,
 		   session->recv_seq ? 'R' : '-',
@@ -181,8 +180,8 @@
 		   session->lns_mode ? "LNS" : "LAC",
 		   session->debug,
 		   jiffies_to_msecs(session->reorder_timeout));
-	seq_printf(m, "   offset 0 l2specific %hu/%hu\n",
-		   session->l2specific_type, session->l2specific_len);
+	seq_printf(m, "   offset %hu l2specific %hu/%hu\n",
+		   session->offset, session->l2specific_type, session->l2specific_len);
 	if (session->cookie_len) {
 		seq_printf(m, "   cookie %02x%02x%02x%02x",
 			   session->cookie[0], session->cookie[1],
@@ -242,8 +241,6 @@
 		l2tp_dfs_seq_tunnel_show(m, pd->tunnel);
 	} else {
 		l2tp_dfs_seq_session_show(m, pd->session);
-		if (pd->session->deref)
-			pd->session->deref(pd->session);
 		l2tp_session_dec_refcount(pd->session);
 	}