From owner-freebsd-hackers@FreeBSD.ORG Fri Aug 30 08:17:19 2013 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 12F8281F for ; Fri, 30 Aug 2013 08:17:19 +0000 (UTC) (envelope-from gibblertron@gmail.com) Received: from mail-oa0-x22a.google.com (mail-oa0-x22a.google.com [IPv6:2607:f8b0:4003:c02::22a]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id D5B262082 for ; Fri, 30 Aug 2013 08:17:18 +0000 (UTC) Received: by mail-oa0-f42.google.com with SMTP id j10so1502113oah.1 for ; Fri, 30 Aug 2013 01:17:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=7X2N0VeTmec4lqlxHpM+plbpS9NE1ivYBL313Q9mqZA=; b=MdfkgkpRuqSmxATRoy2xo9YiE5nVqZR7PKC0WnS4XI98Y4Mtu7EV42xRAvVF8VzUrK NyIcat79hpeCM9aRGpGHVde0nicaXgUK+IlS4WK6yfYzos/3PhdjYfwxnipXXDZIXKv1 T46zqLxg1HKuxeRNg8jMphrc0DwIV/fdcovoS31QimlHJtUBZ/ZYHJ+4jzpWNgq/uTVm RBjMXl2qrwq4dCPZOR4P2RZFeuUncBRGr68JjPEf7BV0P1qt6hGY964ErE7SNJ5nHH7l l9bpHmAuM4muRolZf+QoEUZ7/Hp9nq69rzltjMN5kWhV4iC5HCibMmEgxdDl3oP/kwnG xHnQ== MIME-Version: 1.0 X-Received: by 10.182.158.42 with SMTP id wr10mr1126282obb.92.1377850638165; Fri, 30 Aug 2013 01:17:18 -0700 (PDT) Received: by 10.182.45.228 with HTTP; Fri, 30 Aug 2013 01:17:18 -0700 (PDT) In-Reply-To: <521FBE05.6020007@FreeBSD.org> References: <521FBE05.6020007@FreeBSD.org> Date: Fri, 30 Aug 2013 01:17:18 -0700 Message-ID: Subject: Re: Fatal trap 12 going from 8.2 to 8.4 with ZFS From: Patrick To: freebsd-hackers@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 30 Aug 2013 08:17:19 -0000 On Thu, Aug 29, 2013 at 2:32 PM, Andriy Gapon wrote: > on 29/08/2013 19:37 Patrick said the following: >> I've got a system running on a VPS that I'm trying to upgrade from 8.2 >> to 8.4. It has a ZFS root. After booting the new kernel, I get: >> >> Fatal trap 12: page fault while in kernel mode >> cpuid = 0; apic id = 00 >> fault virtual address = 0x40 >> fault code = supervisor read data, page not present >> instruction pointer = 0x20:0xffffffff810d7691 >> stack pointer = 0x28:0xffffff800001ba60 >> frame pointer = 0x28:0xffffff800001ba90 >> code segment = base 0x0, limit 0xfffff, type 0x1b >> = DPL 0, pres 1, long 1, def32 0, gran 1 >> processor eflags = interrupt enabled, resume, IOPL = 0 >> current process = 1 (kernel) >> trap number = 12 >> panic: page fault >> cpuid = 0 >> KDB: stack backtrace: >> #0 0xffffffff8066cb96 at kdb_backtrace+0x66 >> #1 0xffffffff8063925e at panic+0x1ce >> #2 0xffffffff809c21d0 at trap_fatal+0x290 >> #3 0xffffffff809c255e at trap_pfault+0x23e >> #4 0xffffffff809c2a2e at trap+0x3ce >> #5 0xffffffff809a9624 at calltrap+0x8 >> #6 0xffffffff810df517 at vdev_mirror_child_select+0x67 > > If possible, please run 'kgdb /path/to/8.4/kernel' and then in kgdb do 'list > *vdev_mirror_child_select+0x67' Hmmmm... (kgdb) list *vdev_mirror_child_select+0x67 No symbol table is loaded. Use the "file" command. Do I need to build the kernel from source myself? This kernel is what freebsd-update installed during part 1 of the upgrade. Patrick