From owner-freebsd-current@FreeBSD.ORG Wed Jun 9 07:51:58 2010 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 62BBB1065673 for ; Wed, 9 Jun 2010 07:51:58 +0000 (UTC) (envelope-from ticso@cicely7.cicely.de) Received: from raven.bwct.de (raven.bwct.de [85.159.14.73]) by mx1.freebsd.org (Postfix) with ESMTP id E04B88FC18 for ; Wed, 9 Jun 2010 07:51:57 +0000 (UTC) Received: from mail.cicely.de ([10.1.1.37]) by raven.bwct.de (8.13.4/8.13.4) with ESMTP id o597pt4e015484 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Wed, 9 Jun 2010 09:51:55 +0200 (CEST) (envelope-from ticso@cicely7.cicely.de) Received: from cicely7.cicely.de (cicely7.cicely.de [10.1.1.9]) by mail.cicely.de (8.14.3/8.14.3) with ESMTP id o597pq1i089578 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 9 Jun 2010 09:51:52 +0200 (CEST) (envelope-from ticso@cicely7.cicely.de) Received: from cicely7.cicely.de (localhost [127.0.0.1]) by cicely7.cicely.de (8.14.2/8.14.2) with ESMTP id o597pqTh072986; Wed, 9 Jun 2010 09:51:52 +0200 (CEST) (envelope-from ticso@cicely7.cicely.de) Received: (from ticso@localhost) by cicely7.cicely.de (8.14.2/8.14.2/Submit) id o597pqwS072985; Wed, 9 Jun 2010 09:51:52 +0200 (CEST) (envelope-from ticso) Date: Wed, 9 Jun 2010 09:51:52 +0200 From: Bernd Walter To: freebsd-current@freebsd.org Message-ID: <20100609075152.GC72453@cicely7.cicely.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.11 X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED=-1, BAYES_00=-1.9, T_RP_MATCHES_RCVD=-0.01 autolearn=ham version=3.3.0 X-Spam-Checker-Version: SpamAssassin 3.3.0 (2010-01-18) on spamd.cicely.de Cc: Bernd Walter Subject: lock order reversal bufwait/dirhash X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: ticso@cicely.de List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Jun 2010 07:51:58 -0000 Got this during installworld (source on NFS, destination UFS on CF-card) Source is current checked out yesterday. lock order reversal: 1st 0xc28b85b4 bufwait (bufwait) @ /data/builder/c13-2010-06-07/head/sys/kern/vfs_bio.c:2575 2nd 0xc343f000 dirhash (dirhash) @ /data/builder/c13-2010-06-07/head/sys/ufs/ufs/ufs_dirhash.c:283 KDB: stack backtrace: db_trace_self_wrapper(c0905b2b,c0d02c56,c2d3d030,c2d40500,ca657890,...) at db_trace_self_wrapper+0x26 _witness_debugger(c0d02c56,c343f000,c0d279c2,c2d40500,c0d2762e,...) at _witness_debugger+0x25 witness_checkorder(c343f000,9,c0d2762e,11b,0,...) at witness_checkorder+0x73c _sx_xlock(c343f000,0,c0d2762e,11b,c3a07e80,...) at _sx_xlock+0x51 ufsdirhash_acquire(e,1828,ca6579f0,c3a07e80,cb2bd814,...) at ufsdirhash_acquire+0x35 ufsdirhash_add(c3a07e80,ca6579f0,1828,ca657950,ca657954,...) at ufsdirhash_add+0x1f ufs_direnter(c3944dd0,c423e220,ca6579f0,ca657bd0,c292ccb0,...) at ufs_direnter+0x894 ufs_mkdir(ca657bf8,ca657c0c,2,0,0,...) at ufs_mkdir+0x51c VOP_MKDIR_APV(c0e0f4c0,ca657bf8,ca657bd0,ca657b3c,2,...) at VOP_MKDIR_APV+0x8e kern_mkdirat(c39264e0,ffffff9c,80513e0,0,1c0,...) at kern_mkdirat+0x240 kern_mkdir(c39264e0,80513e0,0,1c0,ca657c7c,...) at kern_mkdir+0x2f mkdir(c39264e0,ca657cec,ca657d28,c0d014f7,0,...) at mkdir+0x27 syscallenter(c39264e0,ca657ce4,ca657ce4,0,c0e630c0,...) at syscallenter+0xc6 syscall(ca657d28) at syscall+0x3a Xint0x80_syscall() at Xint0x80_syscall+0x20 --- syscall (136, FreeBSD ELF32, mkdir), eip = 0x281817cf, esp = 0xbfbfe30c, ebp = 0xbfbfe398 --- -- B.Walter http://www.bwct.de Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.