bluetooth: handle l2cap_create_connless_pdu() errors

l2cap_create_connless_pdu() can sometimes return ERR_PTR(-ENOMEM) or
ERR_PTR(-EFAULT).

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 1 deletions

diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index 99d68c34e4f1..9753b690a8b3 100644
--- a/net/bluetooth/l2cap.c
+++ b/net/bluetooth/l2cap.c
@@ -1626,7 +1626,10 @@ static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct ms
         /* Connectionless channel */
         if (sk->sk_type == SOCK_DGRAM) {
                 skb = l2cap_create_connless_pdu(sk, msg, len);
-                err = l2cap_do_send(sk, skb);
+                if (IS_ERR(skb))
+                        err = PTR_ERR(skb);
+                else
+                        err = l2cap_do_send(sk, skb);
                 goto done;
         }