From owner-freebsd-current@FreeBSD.ORG Fri Jul 15 08:26:05 2005 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 A0BE216A41C for ; Fri, 15 Jul 2005 08:26:05 +0000 (GMT) (envelope-from thierry@herbelot.com) Received: from postfix3-2.free.fr (postfix3-2.free.fr [213.228.0.169]) by mx1.FreeBSD.org (Postfix) with ESMTP id 421E143D45 for ; Fri, 15 Jul 2005 08:26:04 +0000 (GMT) (envelope-from thierry@herbelot.com) Received: from herbelot.dyndns.org (bne75-4-82-227-159-103.fbx.proxad.net [82.227.159.103]) by postfix3-2.free.fr (Postfix) with ESMTP id 22AB9C026 for ; Fri, 15 Jul 2005 10:26:03 +0200 (CEST) Received: from diversion.herbelot.nom (diversion.herbelot.nom [192.168.2.6]) by herbelot.dyndns.org (8.13.3/8.13.3) with ESMTP id j6F8Psoo021253; Fri, 15 Jul 2005 10:26:00 +0200 (CEST) From: Thierry Herbelot To: bzeeb+freebsd+lor@zabbadoz.net Date: Fri, 15 Jul 2005 10:25:44 +0200 User-Agent: KMail/1.8.1 X-Warning: Windows can lose your files X-Op-Sys: Le FriBi de la mort qui tue X-Org: TfH&Co X-MailScanner: Found to be clean MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200507151025.46679.thierry@herbelot.com> Cc: freebsd-current@freebsd.org Subject: new lock order reversal X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: thierry@herbelot.com List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 15 Jul 2005 08:26:05 -0000 Hello, I just had a look a the list of LOR you maintain and I did not see this one : (on a very recent -Current, on both a UP and an SMP machine, with straight GENERIC kernels) lock order reversal 1st 0xc0979dc0 UMA lock (UMA lock) @ /usr/src/sys/vm/uma_core.c:1475 2nd 0xc1061144 system map (system map) @ /usr/src/sys/vm/vm_map.c:2317 KDB: stack backtrace: kdb_backtrace(0,ffffffff,c092eef8,c092f038,c08b9964) at kdb_backtrace+0x29 witness_checkorder(c1061144,9,c0870168,90d) at witness_checkorder+0x564 _mtx_lock_flags(c1061144,0,c0870168,90d) at _mtx_lock_flags+0x5b _vm_map_lock(c10610c0,c0870168,90d) at _vm_map_lock+0x26 vm_map_remove(c10610c0,c19e0000,c19e1000,c83adc08,c077e2c1) at vm_map_remove+0x1f kmem_free(c10610c0,c19e0000,1000,c83adc38,c077dc72) at kmem_free+0x25 page_free(c19e0000,1000,2) at page_free+0x29 zone_drain(c104adc0) at zone_drain+0x26a zone_foreach(c077da08,c83adcec,c078f487,c133c180,c83adc74) at zone_foreach+0x37 uma_reclaim(c133c180,c83adc74,0,c0925520,c83adc80) at uma_reclaim+0x12 vm_pageout_scan(0,c097a220,0,c0871655,5c3) at vm_pageout_scan+0x103 vm_pageout(0,c83add38,0,c0790240,0) at vm_pageout+0x2c3 fork_exit(c0790240,0,c83add38) at fork_exit+0xa0 fork_trampoline() at fork_trampoline+0x8 --- trap 0x1, eip = 0, esp = 0xc83add6c, ebp = 0 --- CVS idents : /usr/src/sys/vm/uma_core.c: $FreeBSD: src/sys/vm/uma_core.c,v 1.122 2005/07/14 16:35:13 rwatson Exp $ /usr/src/sys/vm/vm_map.c: $FreeBSD: src/sys/vm/vm_map.c,v 1.366 2005/05/02 07:05:20 alc Exp $ Cheers TfH