From owner-freebsd-bugs@FreeBSD.ORG Tue Aug 29 18:20:23 2006 Return-Path: X-Original-To: freebsd-bugs@hub.freebsd.org Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1292116A508 for ; Tue, 29 Aug 2006 18:20:23 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [216.136.204.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id 50B9743D58 for ; Tue, 29 Aug 2006 18:20:20 +0000 (GMT) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.13.4/8.13.4) with ESMTP id k7TIKKO7095062 for ; Tue, 29 Aug 2006 18:20:20 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.13.4/8.13.4/Submit) id k7TIKKgk095061; Tue, 29 Aug 2006 18:20:20 GMT (envelope-from gnats) Resent-Date: Tue, 29 Aug 2006 18:20:20 GMT Resent-Message-Id: <200608291820.k7TIKKgk095061@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Radim Kolar Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1958316A4DD for ; Tue, 29 Aug 2006 18:14:22 +0000 (UTC) (envelope-from hsn@netmag.cz) Received: from smtp-out4.iol.cz (smtp-out4.iol.cz [194.228.2.92]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6BE2243D49 for ; Tue, 29 Aug 2006 18:14:21 +0000 (GMT) (envelope-from hsn@netmag.cz) Received: from antivir4.iol.cz (avir4 [192.168.30.209]) by smtp-out4.iol.cz (Postfix) with ESMTP id 7A3361F909D for ; Tue, 29 Aug 2006 20:13:15 +0200 (CEST) Received: from localhost (antivir4.iol.cz [127.0.0.1]) by antivir4.iol.cz (Postfix) with ESMTP id 650DA240042 for ; Tue, 29 Aug 2006 20:13:15 +0200 (CEST) Received: from smtp-out4.iol.cz (smtp-out-4.iplanet.iol.cz [192.168.30.31]) by antivir4.iol.cz (Postfix) with ESMTP id 39CA0240043 for ; Tue, 29 Aug 2006 20:13:15 +0200 (CEST) Received: from sanatana.dharma (96.219.broadband3.iol.cz [85.70.219.96]) by smtp-out4.iol.cz (Postfix) with ESMTP id 1DD8822AEAA for ; Tue, 29 Aug 2006 20:13:13 +0200 (CEST) Received: from hsn@localhost by sanatana.dharma (Exim 4.63_0 FreeBSD) id 1GI85H-000FJg-5q ; Tue, 29 Aug 2006 20:13:11 +0200 Message-Id: Date: Tue, 29 Aug 2006 20:13:11 +0200 From: Radim Kolar To: FreeBSD-gnats-submit@FreeBSD.org X-Send-Pr-Version: 3.113 Cc: hsn@sd.iol.cz Subject: kern/102653: TCP stack sends infinite retries for connection in LAST_ACK state X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Radim Kolar List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 29 Aug 2006 18:20:23 -0000 >Number: 102653 >Category: kern >Synopsis: TCP stack sends infinite retries for connection in LAST_ACK state >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Tue Aug 29 18:20:19 GMT 2006 >Closed-Date: >Last-Modified: >Originator: Radim Kolar >Release: FreeBSD 6.1-STABLE i386 >Organization: >Environment: System: FreeBSD sanatana.dharma 6.1-STABLE FreeBSD 6.1-STABLE #3: Fri Aug 25 12:13:08 CEST 2006 root@sanatana.dharma:/usr/obj/usr/src/sys/UP i386 >Description: I discovered that my machine sends infinite retries for these 2 connections: tcp4 0 0 sanatana.61564 mail.xsec.it.http LAST_ACK tcp4 0 0 sanatana.59795 www.xiti.dk.http LAST_ACK it sends packets every 2 seconds or so and gets no reply from remote computer: 20:07:14.855393 IP sanatana.dharma.61564 > mail.xsec.it.http: . ack 1 win 0 20:07:14.855593 IP sanatana.dharma.61564 > mail.xsec.it.http: F 1:1(0) ack 1 win 32832 20:07:14.855662 IP sanatana.dharma.59795 > www.xiti.gr.http: . ack 1 win 0 20:07:14.855797 IP sanatana.dharma.59795 > www.xiti.gr.http: F 1:1(0) ack 1 win 32832 20:07:16.726973 IP sanatana.dharma.61564 > mail.xsec.it.http: F 1:1(0) ack 1 win 32832 20:07:17.214834 IP sanatana.dharma.59795 > www.xiti.gr.http: F 1:1(0) ack 1 win 32832 20:07:17.344771 IP sanatana.dharma.61564 > mail.xsec.it.http: F 1:1(0) ack 1 win 32832 20:07:17.954631 IP sanatana.dharma.59795 > www.xiti.gr.http: F 1:1(0) ack 1 win 32832 20:07:18.380573 IP sanatana.dharma.61564 > mail.xsec.it.http: F 1:1(0) ack 1 win 32832 20:07:19.234371 IP sanatana.dharma.59795 > www.xiti.gr.http: F 1:1(0) ack 1 win 32832 I watched this activity for about 15 minutes, so my guess is that bsd box never gives up. >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted: