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af_iucv: wrong mapping of sent and confirmed skbs 

When sending data through IUCV a MESSAGE COMPLETE interrupt
signals that sent data memory can be freed or reused again.
With commit f9c41a62bb
"af_iucv: fix recvmsg by replacing skb_pull() function" the
MESSAGE COMPLETE callback iucv_callback_txdone() identifies
the wrong skb as being confirmed, which leads to data corruption.
This patch fixes the skb mapping logic in iucv_callback_txdone().

Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ursula Braun 2014-05-13 14:38:02 +02:00 committed by David S. Miller
parent 03a58baa78
commit f5738e2ef8
1 changed files with 1 additions and 1 deletions
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2
net/iucv/af_iucv.c
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@ -1830,7 +1830,7 @@ static void iucv_callback_txdone(struct iucv_path *path,
spin_lock_irqsave(&list->lock, flags);
while (list_skb != (struct sk_buff *)list) {
if (msg->tag != IUCV_SKB_CB(list_skb)->tag) {
if (msg->tag == IUCV_SKB_CB(list_skb)->tag) {
this = list_skb;
break;
}