4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Colin Ian King <redacted>


[ Upstream commit b024d949a3c24255a7ef1a470420eb478949aa4c ]

list.dev has not been initialized and so the copy_to_user is copying
data from the stack back to user space which is a potential
information leak. Fix this ensuring all of list is initialized to
zero.

Detected by CoverityScan, CID#1357894 ("Uninitialized scalar variable")

Signed-off-by: Colin Ian King <redacted>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/irda/af_irda.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/irda/af_irda.c
+++ b/net/irda/af_irda.c

@@ -2227,7 +2227,7 @@ static int irda_getsockopt(struct socket
 {
 	struct sock *sk = sock->sk;
 	struct irda_sock *self = irda_sk(sk);
-	struct irda_device_list list;
+	struct irda_device_list list = { 0 };
 	struct irda_device_info *discoveries;
 	struct irda_ias_set *	ias_opt;	/* IAS get/query params */
 	struct ias_object *	ias_obj;	/* Object in IAS */