From owner-freebsd-current@FreeBSD.ORG Sun Sep 10 21:10:26 2006 Return-Path: X-Original-To: freebsd-current@FreeBSD.org Delivered-To: freebsd-current@FreeBSD.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8180916A407 for ; Sun, 10 Sep 2006 21:10:26 +0000 (UTC) (envelope-from jos@catnook.com) Received: from lizzy.dyndns.org (209-204-181-78.dsl.static.sonic.net [209.204.181.78]) by mx1.FreeBSD.org (Postfix) with SMTP id 0CF4043D45 for ; Sun, 10 Sep 2006 21:10:25 +0000 (GMT) (envelope-from jos@catnook.com) Received: (qmail 1249 invoked by uid 1000); 10 Sep 2006 21:10:47 -0000 Date: Sun, 10 Sep 2006 14:10:25 -0700 From: Jos Backus To: freebsd-current@FreeBSD.org Message-ID: <20060910211047.GA1216@lizzy.catnook.local> Mail-Followup-To: freebsd-current@FreeBSD.org References: <20060829170124.GA1818@lizzy.catnook.local> <20060901151404.C18193@fledge.watson.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060901151404.C18193@fledge.watson.org> User-Agent: Mutt/1.5.13 (2006-08-11) Cc: Subject: Re: Retrieving info from panics while in X X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: jos@catnook.com List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 10 Sep 2006 21:10:26 -0000 So this panic happened again. Here's some information about it: lizzy:~% sudo kgdb /usr/obj/usr/src/sys/LIZZY/kernel.debug crash/vmcore.0 kgdb: kvm_nlist(_stopped_cpus): kgdb: kvm_nlist(_stoppcbs): [GDB will not be able to debug user-mode threads: /usr/lib/libthread_db.so: Undefined symbol "ps_pglobal_lookup"] 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 "i386-marcel-freebsd". Unread portion of the kernel message buffer: Slab at 0xc4d1efa8, freei 8 = 0. panic: Duplicate free of item 0xc4d1e800 from zone 0xc0c45080(mbuf_packet) Uptime: 8h43m17s Physical memory: 1018 MB Dumping 172 MB: 157 141 125 109 93 77 61 45 29 13 #0 doadump () at pcpu.h:166 166 pcpu.h: No such file or directory. in pcpu.h (kgdb) bt #0 doadump () at pcpu.h:166 #1 0xc04c4250 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:409 #2 0xc04c44fb in panic ( fmt=0xc0610aa7 "Duplicate free of item %p from zone %p(%s)\n") at /usr/src/sys/kern/kern_shutdown.c:565 #3 0xc058cc0c in uma_dbg_free (zone=0xc0c45080, slab=0xc4d1efa8, item=0xc4d1e800) at /usr/src/sys/vm/uma_dbg.c:302 #4 0xc058b43f in uma_zfree_arg (zone=0xc0c45080, item=0xc4d1e800, udata=0x0) at /usr/src/sys/vm/uma_core.c:2269 #5 0xc04ff1c1 in mb_free_ext (m=0xc4d1e800) at uma.h:303 #6 0xc04ff02e in m_freem (mb=0x0) at mbuf.h:446 #7 0xc0723b4c in ?? () #8 0xc4d1e800 in ?? () #9 0xc30ae800 in ?? () #10 0x00000100 in ?? () #11 0xc3080000 in ?? () #12 0xc3080000 in ?? () #13 0xc30801cc in ?? () #14 0x00000018 in ?? () #15 0xe35bdcc8 in ?? () #16 0xc072852b in ?? () #17 0xc30801cc in ?? () #18 0x00000000 in ?? () #19 0xc0733ae5 in ?? () #20 0x000004e9 in ?? () #21 0xc3032780 in ?? () #22 0x00000001 in ?? () #23 0xe35bdca8 in ?? () #24 0xc04d9bcf in critical_exit () at kern_switch.c:625 Previous frame inner to this frame (corrupt stack?) (kgdb) Let me know what other bits of info you need in order to debug this. -- Jos Backus jos at catnook.com