linux-kernel - [patch 102/101] TCP: Fix minisock tcp_create_openreq

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Date:	Wed, 7 Mar 2007 15:12:05 -0800
From:	Chris Wright <chrisw@...s-sol.org>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	"Theodore Ts'o" <tytso@....edu>,
	Zwane Mwaikambo <zwane@....linux.org.uk>,
	Justin Forbes <jmforbes@...uxtx.org>,
	Chris Wedgwood <reviews@...cw.f00f.org>,
	Randy Dunlap <rdunlap@...otime.net>,
	Michael Krufky <mkrufky@...uxtv.org>,
	Chuck Ebbert <cebbert@...hat.com>,
	Dave Jones <davej@...hat.com>,
	Chuck Wolber <chuckw@...ntumlinux.com>,
	akpm@...ux-foundation.org, torvalds@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, David Miller <davem@...emloft.net>,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: [patch 102/101] TCP: Fix minisock tcp_create_openreq_child() typo.

From: Arnaldo Carvalho de Melo <acme@...hat.com>

On 2/28/07, KOVACS Krisztian <hidden@...abit.hu> wrote:
>
>   Hi,
>
>   While reading TCP minisock code I've found this suspiciously looking
> code fragment:
>
> - 8< -
> struct sock *tcp_create_openreq_child(struct sock *sk, struct request_sock *req, struct sk_buff *skb)
> {
>         struct sock *newsk = inet_csk_clone(sk, req, GFP_ATOMIC);
>
>         if (newsk != NULL) {
>                 const struct inet_request_sock *ireq = inet_rsk(req);
>                 struct tcp_request_sock *treq = tcp_rsk(req);
>                 struct inet_connection_sock *newicsk = inet_csk(sk);
>                 struct tcp_sock *newtp;
> - 8< -
>
>   The above code initializes newicsk to inet_csk(sk), isn't that supposed
> to be inet_csk(newsk)?  As far as I can tell this might leave
> icsk_ack.last_seg_size zero even if we do have received data.

Good catch!

David, please apply the attached patch.

Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Chris Wright <chrisw@...s-sol.org>

---
 net/ipv4/tcp_minisocks.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-2.6.20.1.orig/net/ipv4/tcp_minisocks.c
+++ linux-2.6.20.1/net/ipv4/tcp_minisocks.c
@@ -381,7 +381,7 @@ struct sock *tcp_create_openreq_child(st
 	if (newsk != NULL) {
 		const struct inet_request_sock *ireq = inet_rsk(req);
 		struct tcp_request_sock *treq = tcp_rsk(req);
-		struct inet_connection_sock *newicsk = inet_csk(sk);
+		struct inet_connection_sock *newicsk = inet_csk(newsk);
 		struct tcp_sock *newtp;
 
 		/* Now setup tcp_sock */
-
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