From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932511AbZLNTWT (ORCPT ); Mon, 14 Dec 2009 14:22:19 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932496AbZLNTWT (ORCPT ); Mon, 14 Dec 2009 14:22:19 -0500 Received: from gw1.cosmosbay.com ([212.99.114.194]:55819 "EHLO gw1.cosmosbay.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932491AbZLNTWS (ORCPT ); Mon, 14 Dec 2009 14:22:18 -0500 Message-ID: <4B269065.5000601@gmail.com> Date: Mon, 14 Dec 2009 20:22:13 +0100 From: Eric Dumazet User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; fr; rv:1.9.1.5) Gecko/20091204 Thunderbird/3.0 MIME-Version: 1.0 To: David Miller CC: john.dykstra1@gmail.com, lists@nerdbynature.de, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: Re: Badness at net/ipv4/inet_connection_sock.c:293 References: <20091213.234530.82029083.davem@davemloft.net> <4B267708.3010202@gmail.com> <1260817033.9141.8.camel@merlyn> <20091214.111105.224947761.davem@davemloft.net> In-Reply-To: <20091214.111105.224947761.davem@davemloft.net> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-1.6 (gw1.cosmosbay.com [0.0.0.0]); Mon, 14 Dec 2009 20:22:14 +0100 (CET) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Le 14/12/2009 20:11, David Miller a écrit : > From: John Dykstra > Date: Mon, 14 Dec 2009 18:57:13 +0000 > >> That test was changed to match a change in the return values of >> tcp_ack(). No logic change was intended. > > As Eric pointed out, changing tcp_ack()'s behavior effects state > transitions out of SYN_ACK, so this commit is very likely the culprit. > > I usually see 2 or 3 three of these bug triggers in the first ten > minutes after bootup and I haven't seen one yet in 20 minutes > with the commit reverted. > > This change is definitely wrong. Hmm, I didnt yet spotted the problem, just gave some hints ...