From owner-freebsd-stable@FreeBSD.ORG Thu Feb 16 17:19:32 2012 Return-Path: Delivered-To: stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C1C18106564A for ; Thu, 16 Feb 2012 17:19:32 +0000 (UTC) (envelope-from paul@gromit.dlib.vt.edu) Received: from lennier.cc.vt.edu (lennier.cc.vt.edu [198.82.162.213]) by mx1.freebsd.org (Postfix) with ESMTP id 35F1B8FC1B for ; Thu, 16 Feb 2012 17:19:31 +0000 (UTC) Received: from vivi.cc.vt.edu (vivi.cc.vt.edu [198.82.163.43]) by lennier.cc.vt.edu (8.13.8/8.13.8) with ESMTP id q1GHJ1gL006439; Thu, 16 Feb 2012 12:19:01 -0500 Received: from auth3.smtp.vt.edu (EHLO auth3.smtp.vt.edu) ([198.82.161.152]) by vivi.cc.vt.edu (MOS 4.3.3-GA FastPath queued) with ESMTP id UHI24539; Thu, 16 Feb 2012 12:19:01 -0500 (EST) Received: from pmather.tower.lib.vt.edu (pmather.tower.lib.vt.edu [128.173.51.28]) (authenticated bits=0) by auth3.smtp.vt.edu (8.13.8/8.13.8) with ESMTP id q1GHJ1mt010759 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO); Thu, 16 Feb 2012 12:19:01 -0500 Mime-Version: 1.0 (Apple Message framework v1084) Content-Type: text/plain; charset=us-ascii From: Paul Mather In-Reply-To: <20120216154932.GM3283@deviant.kiev.zoral.com.ua> Date: Thu, 16 Feb 2012 12:07:46 -0500 Content-Transfer-Encoding: quoted-printable Message-Id: References: <20120215004753.GQ3283@deviant.kiev.zoral.com.ua> <8F48D496-59BD-431D-B7F1-962A79C7ACC5@gromit.dlib.vt.edu> <20120216154932.GM3283@deviant.kiev.zoral.com.ua> To: Konstantin Belousov X-Mailer: Apple Mail (2.1084) X-Mirapoint-Received-SPF: 198.82.161.152 auth3.smtp.vt.edu paul@gromit.dlib.vt.edu 5 none X-Junkmail-Status: score=10/50, host=vivi.cc.vt.edu X-Junkmail-Signature-Raw: score=unknown, refid=str=0001.0A020201.4F3D3A85.007B,ss=1,re=0.000,fgs=0, ip=0.0.0.0, so=2011-07-25 19:15:43, dmn=2011-05-27 18:58:46, mode=single engine X-Junkmail-IWF: false Cc: stable@freebsd.org Subject: Re: ZFS + nullfs + Linuxulator = panic? 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: Thu, 16 Feb 2012 17:19:32 -0000 On Feb 16, 2012, at 10:49 AM, Konstantin Belousov wrote: > On Thu, Feb 16, 2012 at 10:09:27AM -0500, Paul Mather wrote: >> On Feb 14, 2012, at 7:47 PM, Konstantin Belousov wrote: >>=20 >>> On Tue, Feb 14, 2012 at 09:38:18AM -0500, Paul Mather wrote: >>>> I have a problem with RELENG_8 (FreeBSD/amd64 running a GENERIC = kernel, last built 2012-02-08). It will panic during the daily periodic = scripts that run at 3am. Here is the most recent panic message: >>>>=20 >>>> Fatal trap 9: general protection fault while in kernel mode >>>> cpuid =3D 0; apic id =3D 00 >>>> instruction pointer =3D 0x20:0xffffffff8069d266 >>>> stack pointer =3D 0x28:0xffffff8094b90390 >>>> frame pointer =3D 0x28:0xffffff8094b903a0 >>>> code segment =3D base 0x0, limit 0xfffff, type 0x1b >>>> =3D DPL 0, pres 1, long 1, def32 0, gran 1 >>>> processor eflags =3D resume, IOPL =3D 0 >>>> current process =3D 72566 (ps) >>>> trap number =3D 9 >>>> panic: general protection fault >>>> cpuid =3D 0 >>>> KDB: stack backtrace: >>>> #0 0xffffffff8062cf8e at kdb_backtrace+0x5e >>>> #1 0xffffffff805facd3 at panic+0x183 >>>> #2 0xffffffff808e6c20 at trap_fatal+0x290 >>>> #3 0xffffffff808e715a at trap+0x10a >>>> #4 0xffffffff808cec64 at calltrap+0x8 >>>> #5 0xffffffff805ee034 at fill_kinfo_thread+0x54 >>>> #6 0xffffffff805eee76 at fill_kinfo_proc+0x586 >>>> #7 0xffffffff805f22b8 at sysctl_out_proc+0x48 >>>> #8 0xffffffff805f26c8 at sysctl_kern_proc+0x278 >>>> #9 0xffffffff8060473f at sysctl_root+0x14f >>>> #10 0xffffffff80604a2a at userland_sysctl+0x14a >>>> #11 0xffffffff80604f1a at __sysctl+0xaa >>>> #12 0xffffffff808e62d4 at amd64_syscall+0x1f4 >>>> #13 0xffffffff808cef5c at Xfast_syscall+0xfc >>>=20 >>> Please look up the line number for the fill_kinfo_thread+0x54. >>=20 >>=20 >> Is there a way for me to do this from the above information? As >> I said in the original message, I failed to get a crash dump after >> reboot (because, it turns out, I hadn't set up my gmirror swap device >> properly). Alas, with the latest panic, it appears to have hung[1] >> during the "Dumping" phase, so it looks like I won't get a saved = crash >> dump this time, either. :-( >=20 > Load the kernel.debug into kgdb, and from there do > "list *fill_kinfo_thread+0x54". gromit# kgdb /usr/obj/usr/src/sys/GENERIC/kernel.debug GNU gdb 6.1.1 [FreeBSD] Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you = are welcome to change it and/or distribute copies of it under certain = conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for = details. This GDB was configured as "amd64-marcel-freebsd"... (kgdb) list *fill_kinfo_thread+0x54 0xffffffff805ee034 is in fill_kinfo_thread = (/usr/src/sys/kern/kern_proc.c:854). 849 thread_lock(td); 850 if (td->td_wmesg !=3D NULL) 851 strlcpy(kp->ki_wmesg, td->td_wmesg, = sizeof(kp->ki_wmesg)); 852 else 853 bzero(kp->ki_wmesg, sizeof(kp->ki_wmesg)); 854 strlcpy(kp->ki_ocomm, td->td_name, = sizeof(kp->ki_ocomm)); 855 if (TD_ON_LOCK(td)) { 856 kp->ki_kiflag |=3D KI_LOCKBLOCK; 857 strlcpy(kp->ki_lockname, td->td_lockname, 858 sizeof(kp->ki_lockname)); (kgdb)=20 Cheers, Paul.