From owner-freebsd-bugs@FreeBSD.ORG Mon Sep 29 02:50:22 2003 Return-Path: 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 8E59E16A4B3 for ; Mon, 29 Sep 2003 02:50:22 -0700 (PDT) Received: from freefall.freebsd.org (freefall.freebsd.org [216.136.204.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id 410F044020 for ; Mon, 29 Sep 2003 02:50:21 -0700 (PDT) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.12.9/8.12.9) with ESMTP id h8T9oLFY004613 for ; Mon, 29 Sep 2003 02:50:21 -0700 (PDT) (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.12.9/8.12.9/Submit) id h8T9oL3i004611; Mon, 29 Sep 2003 02:50:21 -0700 (PDT) (envelope-from gnats) Resent-Date: Mon, 29 Sep 2003 02:50:21 -0700 (PDT) Resent-Message-Id: <200309290950.h8T9oL3i004611@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, "Shaun D. Jurrens" Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 0913416A4B3 for ; Mon, 29 Sep 2003 02:42:01 -0700 (PDT) Received: from vmx2.skoleetaten.oslo.no (vmx2.skoleetaten.oslo.no [193.156.192.32]) by mx1.FreeBSD.org (Postfix) with ESMTP id 98A1243FFD for ; Mon, 29 Sep 2003 02:41:59 -0700 (PDT) (envelope-from shamz@nevada.skoleetaten.oslo.no) Received: from smtp.skoleetaten.oslo.no (localhost [127.0.0.1]) 0731579446 for ; Mon, 29 Sep 2003 11:40:33 +0200 (CEST) Received: from nevada (nevada.skoleetaten.oslo.no [193.156.192.131]) 9AF0A7930D for ; Mon, 29 Sep 2003 11:40:32 +0200 (CEST) Message-Id: 1064828432@nevada Date: Mon, 29 Sep 2003 11:40:32 +0200 From: "Shaun D. Jurrens" To: FreeBSD-gnats-submit@FreeBSD.org X-Send-Pr-Version: gtk-send-pr 0.1 Subject: kern/57344: KMEM exhaustion from cloned routes X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 29 Sep 2003 09:50:22 -0000 >Number: 57344 >Category: kern >Synopsis: KMEM exhaustion from cloned routes >Confidential: no >Severity: critical >Priority: high >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Sep 29 02:50:20 PDT 2003 >Closed-Date: >Last-Modified: >Originator: Shaun D. Jurrens >Release: FreeBSD 4.8-RELEASE-p9 i386 >Organization: >Environment: System: FreeBSD centurion 4.8-RELEASE-p9 FreeBSD 4.8-RELEASE-p9 #1: Fri Sep i386 >Description: Use of static routes on routing firewall causes cloned routes to be created to next hop router. These routes do not time-out nor is kernel memory freed, eventually resulting in kernel memory exhaustion and routing failures. This problem has existed for some time. See also: http://www.freebsd.org/cgi/getmsg.cgi?fetch=38493+45748+/usr/local/www/db/text/2003/freebsd-net/20030518.freebsd-net >How-To-Repeat: set up a box with sufficient hosts to cause routing table to be filled with cloned routes. Deleting cloned routes does not free memory. This is a potential source for DoS attacks. >Fix: unknown. net.inet.ip.rtexpire: 2 net.inet.ip.rtminexpire: 2 seem to have no effect. suggest closer examination of the contents of /usr/src/sys/net/route.c and friends... >Release-Note: >Audit-Trail: >Unformatted: