diff options
| author | Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> | 2007-11-29 23:07:58 +1100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-12-14 09:51:04 -0800 |
| commit | 5fb62a184b2f0ea0e3aa2baeed2a01b71844368d (patch) | |
| tree | 46a350776ab66ed2ce4c10d25ce961d986386dd9 /include | |
| parent | 593b85eff26bc1c33c54be8632ac181b6cc1b5a4 (diff) | |
TCP: MTUprobe: fix potential sk_send_head corruption
[TCP] MTUprobe: fix potential sk_send_head corruption
[ Upstream commit: 6e42141009ff18297fe19d19296738b742f861db ]
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 Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/tcp.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h index 54053de0bdd7..704d51e1f543 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -1256,6 +1256,9 @@ 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) |