4 files changed, 7 insertions, 2 deletions
diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
index 7c73a10..9047512 100644
--- a/net/bluetooth/af_bluetooth.c
+++ b/net/bluetooth/af_bluetooth.c
@@ -283,6 +283,8 @@ int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
 	if (flags & (MSG_OOB))
 		return -EOPNOTSUPP;
 
+	msg->msg_namelen = 0;
+
 	skb = skb_recv_datagram(sk, flags, noblock, &err);
 	if (!skb) {
 		if (sk->sk_shutdown & RCV_SHUTDOWN)
@@ -290,8 +292,6 @@ int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
 		return err;
 	}
 
-	msg->msg_namelen = 0;
-
 	copied = skb->len;
 	if (len < copied) {
 		msg->msg_flags |= MSG_TRUNC;
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index b044c38..8d0e801 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -1823,6 +1823,9 @@ static struct sk_buff *l2cap_build_cmd(struct l2cap_conn *conn,
 	BT_DBG("conn %p, code 0x%2.2x, ident 0x%2.2x, len %d",
 			conn, code, ident, dlen);
 
+	if (conn->mtu < L2CAP_HDR_SIZE + L2CAP_CMD_HDR_SIZE)
+		return NULL;
+
 	len = L2CAP_HDR_SIZE + L2CAP_CMD_HDR_SIZE + dlen;
 	count = min_t(unsigned int, conn->mtu, len);
 
diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index 927f418..56fcfd1 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -624,6 +624,7 @@ static int rfcomm_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
 
 	if (test_and_clear_bit(RFCOMM_DEFER_SETUP, &d->flags)) {
 		rfcomm_dlc_accept(d);
+		msg->msg_namelen = 0;
 		return 0;
 	}
 
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index db9b289..ac4631d 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -381,6 +381,7 @@ static void __sco_sock_close(struct sock *sk)
 			sco_chan_del(sk, ECONNRESET);
 		break;
 
+	case BT_CONNECT2:
 	case BT_CONNECT:
 	case BT_DISCONN:
 		sco_chan_del(sk, ECONNRESET);