From owner-freebsd-current@FreeBSD.ORG Fri Jul 15 09:05:11 2005 Return-Path: X-Original-To: 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 A16F416A41C for ; Fri, 15 Jul 2005 09:05:11 +0000 (GMT) (envelope-from bzeeb-lists@lists.zabbadoz.net) Received: from transport.cksoft.de (transport.cksoft.de [62.111.66.27]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3C72D43D49 for ; Fri, 15 Jul 2005 09:05:10 +0000 (GMT) (envelope-from bzeeb-lists@lists.zabbadoz.net) Received: from transport.cksoft.de (localhost [127.0.0.1]) by transport.cksoft.de (Postfix) with ESMTP id 6602C1FFAD2; Fri, 15 Jul 2005 11:05:08 +0200 (CEST) Received: by transport.cksoft.de (Postfix, from userid 66) id 076811FF9AF; Fri, 15 Jul 2005 11:05:06 +0200 (CEST) Received: by mail.int.zabbadoz.net (Postfix, from userid 1060) id DE79615652; Fri, 15 Jul 2005 09:04:42 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mail.int.zabbadoz.net (Postfix) with ESMTP id D3FEA15583; Fri, 15 Jul 2005 09:04:42 +0000 (UTC) Date: Fri, 15 Jul 2005 09:04:42 +0000 (UTC) From: "Bjoern A. Zeeb" X-X-Sender: bz@e0-0.zab2.int.zabbadoz.net To: FreeBSD current mailing list Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Virus-Scanned: by AMaViS cksoft-s20020300-20031204bz on transport.cksoft.de Cc: Thierry Herbelot Subject: new lock order reversal (fwd) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list 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 09:05:11 -0000 Added as http://sources.zabbadoz.net/freebsd/lor.html#109 ---------- Forwarded message ---------- Date: Fri, 15 Jul 2005 10:42:19 +0200 From: Thierry Herbelot Subject: new lock order reversal 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