From owner-freebsd-stable@FreeBSD.ORG Wed Sep 1 02:19:42 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id DD5B01065698 for ; Wed, 1 Sep 2010 02:19:42 +0000 (UTC) (envelope-from frank@zzattack.org) Received: from mail-ew0-f54.google.com (mail-ew0-f54.google.com [209.85.215.54]) by mx1.freebsd.org (Postfix) with ESMTP id 693A28FC15 for ; Wed, 1 Sep 2010 02:19:42 +0000 (UTC) Received: by ewy4 with SMTP id 4so4492289ewy.13 for ; Tue, 31 Aug 2010 19:19:41 -0700 (PDT) Received: by 10.213.52.5 with SMTP id f5mr10341269ebg.35.1283305899591; Tue, 31 Aug 2010 18:51:39 -0700 (PDT) Received: from [10.31.45.197] (21-78-ftth.onsneteindhoven.nl [88.159.78.21]) by mx.google.com with ESMTPS id v8sm15122589eeh.14.2010.08.31.18.51.37 (version=SSLv3 cipher=RC4-MD5); Tue, 31 Aug 2010 18:51:38 -0700 (PDT) Message-ID: <4C7DB18F.5030501@zzattack.org> Date: Wed, 01 Sep 2010 03:51:11 +0200 From: Frank Razenberg User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.8) Gecko/20100802 Thunderbird/3.1.2 MIME-Version: 1.0 To: freebsd-stable@freebsd.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: kernel panic when accessing /dev/tap0 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 01 Sep 2010 02:19:42 -0000 Hi, Robert Watson described a problem in this discussion: http://lists.freebsd.org/pipermail/freebsd-stable/2006-May/025880.html Currently I'm experiencing a similar problem, but on amd64 and FreeBSD 8.1 Release. Accessing /dev/tap0 instantly results in a kernel panic, so it's most likely if_tap related. Is this a known problem? I've started encountering it ever since I rebuilt my kernel with "options vimage". Fatal trap 12: page fault while in kernel mode cpuid = 1; apic id = 01 fault virtual address = 0x28 If more debugging information is required I will gladly provide it. Frank Razenberg