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 /net | |
| 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 'net')
| -rw-r--r-- | net/ipv4/tcp_output.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 666d8a58d14..097165fab7f 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -1287,7 +1287,6 @@ static int tcp_mtu_probe(struct sock *sk) skb = tcp_send_head(sk); tcp_insert_write_queue_before(nskb, skb, sk); - tcp_advance_send_head(sk, skb); TCP_SKB_CB(nskb)->seq = TCP_SKB_CB(skb)->seq; TCP_SKB_CB(nskb)->end_seq = TCP_SKB_CB(skb)->seq + probe_size; |