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Subject[PATCH 3.16 303/346] irda: Free skb on irda_accept error path.
3.16.39-rc1 review patch.  If anyone has any objections, please let me know.

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

From: "phil.turnbull@oracle.com" <phil.turnbull@oracle.com>

commit 8ab86c00e349cef9fb14719093a7f198bcc72629 upstream.

skb is not freed if newsk is NULL. Rework the error path so free_skb is
unconditionally called on function exit.

Fixes: c3ea9fa27413 ("[IrDA] af_irda: IRDA_ASSERT cleanups")
Signed-off-by: Phil Turnbull <phil.turnbull@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
net/irda/af_irda.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

--- a/net/irda/af_irda.c
+++ b/net/irda/af_irda.c
@@ -843,7 +843,7 @@ static int irda_accept(struct socket *so
struct sock *sk = sock->sk;
struct irda_sock *new, *self = irda_sk(sk);
struct sock *newsk;
- struct sk_buff *skb;
+ struct sk_buff *skb = NULL;
int err;

IRDA_DEBUG(2, "%s()\n", __func__);
@@ -913,7 +913,6 @@ static int irda_accept(struct socket *so
err = -EPERM; /* value does not seem to make sense. -arnd */
if (!new->tsap) {
IRDA_DEBUG(0, "%s(), dup failed!\n", __func__);
- kfree_skb(skb);
goto out;
}

@@ -932,7 +931,6 @@ static int irda_accept(struct socket *so
/* Clean up the original one to keep it in listen state */
irttp_listen(self->tsap);

- kfree_skb(skb);
sk->sk_ack_backlog--;

newsock->state = SS_CONNECTED;
@@ -940,6 +938,7 @@ static int irda_accept(struct socket *so
irda_connect_response(new);
err = 0;
out:
+ kfree_skb(skb);
release_sock(sk);
return err;
}
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