From owner-freebsd-hackers@FreeBSD.ORG Thu Aug 29 16:37:51 2013 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id F195315E for ; Thu, 29 Aug 2013 16:37:51 +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 C187226B6 for ; Thu, 29 Aug 2013 16:37:51 +0000 (UTC) Received: by mail-oa0-f42.google.com with SMTP id j10so724109oah.29 for ; Thu, 29 Aug 2013 09:37:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=6ZnesQJvSuzdxQdcLuP9OUxx3ja8H5DGa1xqJ9zM3Ts=; b=BlddKEO8gJM5yCTVLnwNORfrY8/tB8EK1oepQ37aw0itGsZCeCXHVJlEQtoiUxWTTL YL4HUYOhnNi7iGb+RFH1CMBItczgeQx24gFV7Cyfriv4cltpLZJeIC1VTPTC8G1ZNsdY GZPFNQVfzuA2GzRQXZZjhsZn/cwlhCb415E+KeznJeJEkWjhRzpamCGJRkqR/MzYtMdU i1N6gLjlifm0rmsZpmQxxRDaefAse3njIqand+YkWfZZBXmgQNOvCk02gGFA09cLGDFF P2Ob/AQkXgNwtxK7BmMmhyUwM8ZCdn7hlmOX6NFcy6/CN4C1v+b3KBT2JkahSoNqIa1O UB+w== MIME-Version: 1.0 X-Received: by 10.60.133.233 with SMTP id pf9mr3210637oeb.46.1377794271003; Thu, 29 Aug 2013 09:37:51 -0700 (PDT) Received: by 10.182.45.228 with HTTP; Thu, 29 Aug 2013 09:37:50 -0700 (PDT) Date: Thu, 29 Aug 2013 09:37:50 -0700 Message-ID: Subject: 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: Thu, 29 Aug 2013 16:37:52 -0000 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 #7 0xffffffff810dfacc at vdev_mirror_io_start+0x24c #8 0xffffffff810f7c52 at zio_vdev_io_start+0x232 #9 0xffffffff810f76f3 at zio_execute+0xc3 #10 0xffffffff810f77ad at zio_wait+0x2d #11 0xffffffff8108991e at arc_read+0x6ce #12 0xffffffff8109d9d4 at dmu_objset_open_impl+0xd4 #13 0xffffffff810b4014 at dsl_pool_init+0x34 #14 0xffffffff810c7eea at spa_load+0x6aa #15 0xffffffff810c90b2 at spa_load_best+0x52 #16 0xffffffff810cb0ca at spa_open_common+0x14a #17 0xffffffff810a892d at dsl_dir_open_spa+0x2cd Uptime: 3s Cannot dump. Device not defined or unavailable. I've booted back into the 8.2 kernel without any problems, but I'm wondering if anyone can suggest what I should try to get this working? I used freebsd-update to upgrade, and this was after the first "freebsd-update install" where it installs the kernel. My /boot/loader.conf has: zfs_load="YES" vfs.root.mountfrom="zfs:zroot" Should I be going from 8.2 -> 8.3 -> 8.4? Patrick