From owner-freebsd-net@FreeBSD.ORG Fri May 27 11:30:10 2011 Return-Path: Delivered-To: freebsd-net@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 232F81065670 for ; Fri, 27 May 2011 11:30:10 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 075828FC17 for ; Fri, 27 May 2011 11:30:10 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.4/8.14.4) with ESMTP id p4RBU9WF000398 for ; Fri, 27 May 2011 11:30:09 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.4/8.14.4/Submit) id p4RBU9Xv000393; Fri, 27 May 2011 11:30:09 GMT (envelope-from gnats) Date: Fri, 27 May 2011 11:30:09 GMT Message-Id: <201105271130.p4RBU9Xv000393@freefall.freebsd.org> To: freebsd-net@FreeBSD.org From: Gleb Smirnoff Cc: Subject: Re: kern/157287: re0: INVARIANTS panic (Memory modified after free) X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Gleb Smirnoff List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 27 May 2011 11:30:10 -0000 The following reply was made to PR kern/157287; it has been noted by GNATS. From: Gleb Smirnoff To: Joerg Wunsch Cc: FreeBSD-gnats-submit@FreeBSD.org, freebsd-bugs@FreeBSD.org Subject: Re: kern/157287: re0: INVARIANTS panic (Memory modified after free) Date: Fri, 27 May 2011 15:22:24 +0400 On Thu, May 26, 2011 at 05:54:24PM +0200, Joerg Wunsch wrote: J> As it turns out this might be related to something else that has been J> using that piece of memory before re(4) is activated, here are the J> boot messages for reference. You can try to add 'options DEBUG_MEMGUARD' to your kernel config, and add the 'vm.memguard.desc=devbuf' to your /boot/loader.conf. This may help to find place where memory is tampered after free. -- Totus tuus, Glebius.