From owner-freebsd-current@FreeBSD.ORG Sun Oct 17 09:25:23 2004 Return-Path: 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 2B9BE16A4D3 for ; Sun, 17 Oct 2004 09:25:23 +0000 (GMT) Received: from transport.cksoft.de (transport.cksoft.de [62.111.66.27]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6EC5A43D31 for ; Sun, 17 Oct 2004 09:25:08 +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 5CFCA1FF92F; Sun, 17 Oct 2004 11:25:07 +0200 (CEST) Received: by transport.cksoft.de (Postfix, from userid 66) id 6E81D1FF91D; Sun, 17 Oct 2004 11:25:05 +0200 (CEST) Received: by mail.int.zabbadoz.net (Postfix, from userid 1060) id F0B8D15606; Sun, 17 Oct 2004 09:24:31 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mail.int.zabbadoz.net (Postfix) with ESMTP id E5EC8154FC; Sun, 17 Oct 2004 09:24:31 +0000 (UTC) Date: Sun, 17 Oct 2004 09:24:31 +0000 (UTC) From: "Bjoern A. Zeeb" X-X-Sender: bz@e0-0.zab2.int.zabbadoz.net To: Volker In-Reply-To: <4171D04C.8070601@vwsoft.com> Message-ID: References: <4171D04C.8070601@vwsoft.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Virus-Scanned: by AMaViS cksoft-s20020300-20031204bz on transport.cksoft.de cc: freebsd-current@freebsd.org Subject: Re: LOR ath X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 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: Sun, 17 Oct 2004 09:25:23 -0000 On Sun, 17 Oct 2004, Volker wrote: > Whenever if_ath is loaded or unloaded, the ahc0 driver enters the game. > > After that (kldload), my kernel told me about a LOR: > > lock order reversal > 1st 0xc1a1bc58 ath0 (network driver) @ > /usr/src/sys/modules/ath/../../dev/ath/i > f_ath.c:893 > 2nd 0xc184f620 user map (user map) @ /usr/src/sys/vm/vm_map.c:2997 > KDB: stack backtrace: > kdb_backtrace(0,ffffffff,c0728ee8,c072a388,c06d17ec) at kdb_backtrace+0x29 > witness_checkorder(c184f620,9,c06a7966,bb5) at witness_checkorder+0x540 > _sx_xlock(c184f620,c06a7966,bb5) at _sx_xlock+0x50 > _vm_map_lock_read(c184f5dc,c06a7966,bb5,2000000,c16f3e8c) at > _vm_map_lock_read+0 > x3b > vm_map_lookup(cc7a29dc,8055000,2,cc7a29e0,cc7a29d0) at vm_map_lookup+0x26 > vm_fault(c184f5dc,8055000,2,8,c15907d0) at vm_fault+0x69 > trap_pfault(cc7a2aa4,0,8055000) at trap_pfault+0xf2 > trap(18,10,10,8055000,c16cae00) at trap+0x351 > calltrap() at calltrap+0x5 for the archives. I added this as LOR 042: http://sources.zabbadoz.net/freebsd/lor.html#042 -- Bjoern A. Zeeb bzeeb at Zabbadoz dot NeT