From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757850AbZAHDr6 (ORCPT ); Wed, 7 Jan 2009 22:47:58 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752195AbZAHDrt (ORCPT ); Wed, 7 Jan 2009 22:47:49 -0500 Received: from ti-out-0910.google.com ([209.85.142.190]:62316 "EHLO ti-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751072AbZAHDrs (ORCPT ); Wed, 7 Jan 2009 22:47:48 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:mime-version:content-type :content-transfer-encoding:content-disposition; b=g65lOoIimxGuGQThmBcvueRE7+pArcW6o3HlV2CjYgg0SiT7urVLqjsEqi2wVkAyVz 8Er/wzePQqduDN6RwqFQ34OEsd7rkyfhoaEuQ8SOB39csFiL4xteTuM6suL/jI2CdJtz g9HJEqjDCWyfmNDlyVplTdc1wr2oNWWz/bOfE= Message-ID: Date: Thu, 8 Jan 2009 11:47:46 +0800 From: "Wang Xu" To: linux-kernel@vger.kernel.org Subject: "Treason uncloaked" issue of TCP MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, We have a cluster with around 200 nodes, and all of them are installed with CentOS 5.2/2.6.18-92.el5 kernel. And we found many dmesg log as follows: | TCP: Treason uncloaked! Peer 192.168.33.182:55510/60222 shrinks window 977590224:977590304. Repaired. | TCP: Treason uncloaked! Peer 192.168.33.185:55510/49646 shrinks window 2483808366:2483808382. Repaired. | TCP: Treason uncloaked! Peer 192.168.33.133:51316/51560 shrinks window 236559458:236559498. Repaired. | TCP: Treason uncloaked! Peer 192.168.33.115:55510/53342 shrinks window 3977841758:3977841854. Repaired. I searched from the web but cannot get any idea: * its a cluster in lab, no WAN access and only with internal communication, thus it shouldn't be something like attack. * all of them are linux (red hat/centos kernel), hence it must not be other buggy stack * I have checked the source, and it have already with the patch http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=2ad41065d9fe518759b695fc2640cf9c07261dd2 Does anyone have some suggestion? And if you need any more information, I can provide it. Thank you! -- Wang Xu Timothy Leary - "Women who seek to be equal with men lack ambition."