From owner-freebsd-current@FreeBSD.ORG Sat May 8 10:20:08 2010 Return-Path: Delivered-To: current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 2B6761065674 for ; Sat, 8 May 2010 10:20:08 +0000 (UTC) (envelope-from uqs@spoerlein.net) Received: from acme.spoerlein.net (acme.spoerlein.net [188.72.220.29]) by mx1.freebsd.org (Postfix) with ESMTP id 91BC08FC1C for ; Sat, 8 May 2010 10:20:07 +0000 (UTC) Received: from elmar.spoerlein.net (e180134083.adsl.alicedsl.de [85.180.134.83]) by acme.spoerlein.net (8.14.4/8.14.4) with ESMTP id o48AK54w018590 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Sat, 8 May 2010 12:20:06 +0200 (CEST) (envelope-from uqs@spoerlein.net) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=spoerlein.net; s=dkim200908; t=1273314006; bh=gWwuHO8j14pD/2HHi4F7xTDuVcjvmr66eDJnCe/lKRA=; h=Date:From:To:Subject:Message-ID:MIME-Version:Content-Type; b=n7dAssNTS69i3+SUK6rfLRRDWd4akq/6zAVEyG3fgolsr5D8Y1HTJP0SSc3cIRHAt kjX9dZY9jWimpWzrm49r0k7poFBXGIs9S3JuH9WXzl3BAWcuX3pjAbFJ0LSwU3cOqH umR2rrLdCs7W6BJoYXxOcOn6tqehV8l+Tw4Fchp4= Received: from elmar.spoerlein.net (localhost [127.0.0.1]) by elmar.spoerlein.net (8.14.4/8.14.4) with ESMTP id o48AK5o4011234 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sat, 8 May 2010 12:20:05 +0200 (CEST) (envelope-from uqs@spoerlein.net) Received: (from uqs@localhost) by elmar.spoerlein.net (8.14.4/8.14.4/Submit) id o48AK5Mw011233 for current@freebsd.org; Sat, 8 May 2010 12:20:05 +0200 (CEST) (envelope-from uqs@spoerlein.net) Date: Sat, 8 May 2010 12:20:05 +0200 From: Ulrich =?utf-8?B?U3DDtnJsZWlu?= To: current@freebsd.org Message-ID: <20100508102005.GB1867@elmar.spoerlein.net> Mail-Followup-To: current@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.20 (2009-06-14) Cc: Subject: LOR: ufs vs bufwait 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: Sat, 08 May 2010 10:20:08 -0000 This LOR also is not yet listed on the LOR page, so I guess it's rather new. I do use SUJ. lock order reversal: 1st 0xc48388d8 ufs (ufs) @ /usr/src/sys/kern/vfs_lookup.c:502 2nd 0xec0fe304 bufwait (bufwait) @ /usr/src/sys/ufs/ffs/ffs_softdep.c:11363 3rd 0xc49e56b8 ufs (ufs) @ /usr/src/sys/kern/vfs_subr.c:2091 KDB: stack backtrace: db_trace_self_wrapper(c09394fe,fb817308,c062e515,c061e8ab,c093c4f1,...) at db_trace_self_wrapper+0x26 kdb_backtrace(c061e8ab,c093c4f1,c418b168,c418ef28,fb817364,...) at kdb_backtrace+0x29 _witness_debugger(c093c4f1,c49e56b8,c092e785,c418ef28,c094369d,...) at _witness_debugger+0x25 witness_checkorder(c49e56b8,9,c094369d,82b,0,...) at witness_checkorder+0x839 __lockmgr_args(c49e56b8,80100,c49e56d8,0,0,...) at __lockmgr_args+0x7f9 ffs_lock(fb817488,c062e2bb,c0942b3f,80100,c49e5660,...) at ffs_lock+0x82 VOP_LOCK1_APV(c09bd600,fb817488,c4827cd4,c09d62a0,c49e5660,...) at VOP_LOCK1_APV+0xb5 _vn_lock(c49e5660,80100,c094369d,82b,4,...) at _vn_lock+0x5e vget(c49e5660,80100,c4827c30,50,0,...) at vget+0xb9 vfs_hash_get(c47bea20,b803,80000,c4827c30,fb8175d8,...) at vfs_hash_get+0xe6 ffs_vgetf(c47bea20,b803,80000,fb8175d8,1,...) at ffs_vgetf+0x49 softdep_sync_metadata(c4838880,0,c0962957,144,0,...) at softdep_sync_metadata+0xc82 ffs_syncvnode(c4838880,1,c4827c30,fb817698,246,...) at ffs_syncvnode+0x3e2 ffs_truncate(c4838880,200,0,880,c41fb480,...) at ffs_truncate+0x862 ufs_direnter(c4838880,c49e5660,fb81794c,fb817bd4,0,...) at ufs_direnter+0x8d4 ufs_makeinode(fb817bd4,0,fb817b30,fb817a94,c08e4cf5,...) at ufs_makeinode+0x517 ufs_create(fb817b30,fb817b48,0,0,fb817ba8,...) at ufs_create+0x30 VOP_CREATE_APV(c09bd600,fb817b30,2,fb817ac0,0,...) at VOP_CREATE_APV+0xa5 vn_open_cred(fb817ba8,fb817c5c,1a4,0,c41fb480,...) at vn_open_cred+0x1de vn_open(fb817ba8,fb817c5c,1a4,c47e2428,0,...) at vn_open+0x3b kern_openat(c4827c30,ffffff9c,804c5e8,0,602,...) at kern_openat+0x125 kern_open(c4827c30,804c5e8,0,601,21b6,...) at kern_open+0x35 open(c4827c30,fb817cf8,c0972725,c091f062,c47ea2a8,...) at open+0x30 syscall(fb817d38) at syscall+0x220 Xint0x80_syscall() at Xint0x80_syscall+0x20 --- syscall (5, FreeBSD ELF32, open), eip = 0x2817bf33, esp = 0xbfbfec4c, ebp = 0xbfbfecb8 ---