diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 944c18913ca05cea348b479d90ba879254735540..cd7bb3d7f2b4de657a997a0362b0c03917ba889f 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -1985,6 +1985,8 @@ static void l2cap_ack_timeout(struct work_struct *work)
 	struct l2cap_chan *chan = container_of(work, struct l2cap_chan,
 							ack_timer.work);
 
+	BT_DBG("chan %p", chan);
+
 	lock_sock(chan->sk);
 	l2cap_send_ack(chan);
 	release_sock(chan->sk);