From owner-freebsd-current@FreeBSD.ORG Fri Mar 20 05:08:12 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 63CDA106564A for ; Fri, 20 Mar 2009 05:08:12 +0000 (UTC) (envelope-from alc@cs.rice.edu) Received: from mail.cs.rice.edu (mail.cs.rice.edu [128.42.1.31]) by mx1.freebsd.org (Postfix) with ESMTP id 3BE108FC19 for ; Fri, 20 Mar 2009 05:08:12 +0000 (UTC) (envelope-from alc@cs.rice.edu) Received: from mail.cs.rice.edu (localhost.localdomain [127.0.0.1]) by mail.cs.rice.edu (Postfix) with ESMTP id E8DF12C2ACE; Thu, 19 Mar 2009 23:37:31 -0500 (CDT) X-Virus-Scanned: by amavis-2.4.0 at mail.cs.rice.edu Received: from mail.cs.rice.edu ([127.0.0.1]) by mail.cs.rice.edu (mail.cs.rice.edu [127.0.0.1]) (amavisd-new, port 10024) with LMTP id rBz64-YuCNzK; Thu, 19 Mar 2009 23:37:24 -0500 (CDT) Received: from adsl-216-63-78-18.dsl.hstntx.swbell.net (adsl-216-63-78-18.dsl.hstntx.swbell.net [216.63.78.18]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.cs.rice.edu (Postfix) with ESMTP id 03CE32C2A91; Thu, 19 Mar 2009 23:37:23 -0500 (CDT) Message-ID: <49C31D83.3020608@cs.rice.edu> Date: Thu, 19 Mar 2009 23:37:23 -0500 From: Alan Cox User-Agent: Thunderbird 2.0.0.19 (X11/20090124) MIME-Version: 1.0 To: Steve Kargl References: <20090317213856.GA1215@troutmask.apl.washington.edu> <20090319221443.GA1275@troutmask.apl.washington.edu> In-Reply-To: <20090319221443.GA1275@troutmask.apl.washington.edu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: alc@freebsd.org, freebsd-current@freebsd.org Subject: Re: panic: vm_page_free_toq: freeing mapped page X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 20 Mar 2009 05:08:12 -0000 Steve Kargl wrote: > On Wed, Mar 18, 2009 at 01:38:55PM -0500, Alan Cox wrote: > >> Can you please file a problem report on this crash? I'd like to have it in >> the database. It's a very rare crash that been reported on a couple >> occasions over the past five or more years. >> >> Thanks, >> Alan >> >> 2009/3/17 Steve Kargl >> >> >>> Script started on Tue Mar 17 14:31:57 2009 >>> troutmask:root[201] kgdb /usr/obj/usr/src/sys/SPEW/kernel.debug >>> /usr/tmp/vmcore.3 >>> >>> Unread portion of the kernel message buffer: >>> panic: vm_page_free_toq: freeing mapped page 0xffffff01f77d8f70 >>> > > My system just panicked again with the same back trace and message. > I was starting linux's acroread on my amd64 system. If you want > the kernel.debug and vmcore.4, then send me an email off-list. > > After looking more carefully at your stack trace, I realize that it is different from the one that I've seen before involving the vm_page_free_toq assertion. Your stack trace says that you crashed while starting a 32-bit process from a 64-bit parent. This takes a slightly different path through the code than starting a 64-bit process from 64-bit parent. Please send me a pointer to your kernel.debug and vmcore.4 Thanks, Alan