| From | Ben Hutchings <> | Date | Mon, 14 Nov 2016 00:14:07 +0000 | Subject | [PATCH 3.2 129/152] irda: Free skb on irda_accept error path. |
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3.2.84-rc1 review patch. If anyone has any objections, please let me know.
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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 3.2: 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 @@ -846,7 +846,7 @@ 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__); @@ -916,7 +916,6 @@ 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; } @@ -935,7 +934,6 @@ 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; @@ -943,6 +941,7 @@ 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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