From owner-freebsd-fs@FreeBSD.ORG Tue Feb 1 09:54:18 2011 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 367DF106564A for ; Tue, 1 Feb 2011 09:54:18 +0000 (UTC) (envelope-from rs@bytecamp.net) Received: from mail.bytecamp.net (mail.bytecamp.net [212.204.60.9]) by mx1.freebsd.org (Postfix) with ESMTP id 7BD618FC14 for ; Tue, 1 Feb 2011 09:54:17 +0000 (UTC) Received: (qmail 93288 invoked by uid 89); 1 Feb 2011 10:54:15 +0100 Received: from stella.bytecamp.net (HELO ?212.204.60.37?) (rs%bytecamp.net@212.204.60.37) by mail.bytecamp.net with CAMELLIA256-SHA encrypted SMTP; 1 Feb 2011 10:54:15 +0100 Message-ID: <4D47D847.8080308@bytecamp.net> Date: Tue, 01 Feb 2011 10:54:15 +0100 From: Robert Schulze Organization: bytecamp GmbH User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.13) Gecko/20101208 Thunderbird/3.1.7 MIME-Version: 1.0 To: freebsd-fs@freebsd.org Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Subject: LOR in dirhash X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 Feb 2011 09:54:18 -0000 We are currently having continuous problems with 8-STABLE. Since we upgraded, we have "double faults" every three days or so, yesterday we built a debugging kernel to identify the problem. Today I saw a LOR in /var/log/messages, the whole output: 8<---------------------------------------------------------- lock order reversal: 1st 0xffffff81ef08ce98 bufwait (bufwait) @ /usr/src/sys/kern/vfs_bio.c:2636 2nd 0xffffff00157b4600 dirhash (dirhash) @ /usr/src/sys/ufs/ufs/ufs_dirhash.c:285 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2a kdb_backtrace() at kdb_backtrace+0x37 _witness_debugger() at _witness_debugger+0x49 witness_checkorder() at witness_checkorder+0x7d3 _sx_xlock() at _sx_xlock+0x4a ufsdirhash_acquire() at ufsdirhash_acquire+0x3a ufsdirhash_add() at ufsdirhash_add+0x19 ufs_diren ter() at ufs_direnter+0x876 ufs_makeinode() at ufs_makeinode+0x239 VOP_CREATE_APV() at VOP_CREATE_APV+0xb6 vn_open_cred() at vn_open_cred+0x415 kern_openat() at kern_openat+0x165 syscallenter() at syscallenter+0xe5 syscall() at syscall+0x55 Xfast_syscall() at Xfast_syscall+0xe2 --- syscall (5, FreeBSD ELF64 , open) , rip = 0x8009 a4a7c, rsp = 0x 7ffffff e918, r bp = 0x1 --- 8<---------------------------------------------------------- maybe this is a seriuos one? with kind regards, Robert Schulze