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[TCP] MTUprobe: fix potential sk_send_head corruption

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When the abstraction functions got added, conversion here was
made incorrectly. As a result, the skb may end up pointing
to skb which got included to the probe skb and then was freed.
For it to trigger, however, skb_transmit must fail sending as
well.

Signed-off-by: Ilpo J�rvinen <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Ilpo J�rvinen 2007-11-19 23:24:09 -08:00 • committed by David S. Miller
commit 6e42141009
2 changed files with 3 additions and 1 deletions
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3
include/net/tcp.h
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@ -1288,6 +1288,9 @@ static inline void tcp_insert_write_queue_before(struct sk_buff *new,
struct sock *sk)
{
__skb_insert(new, skb->prev, skb, &sk->sk_write_queue);
if (sk->sk_send_head == skb)
sk->sk_send_head = new;
}
static inline void tcp_unlink_write_queue(struct sk_buff *skb, struct sock *sk)