From owner-freebsd-current Fri Jun 22 11:21:53 2001 Delivered-To: freebsd-current@freebsd.org Received: from meow.osd.bsdi.com (meow.osd.bsdi.com [204.216.28.88]) by hub.freebsd.org (Postfix) with ESMTP id 961BE37B401 for ; Fri, 22 Jun 2001 11:21:48 -0700 (PDT) (envelope-from jhb@FreeBSD.org) Received: from laptop.baldwin.cx (john@jhb-laptop.osd.bsdi.com [204.216.28.241]) by meow.osd.bsdi.com (8.11.3/8.11.2) with ESMTP id f5MILEI72977; Fri, 22 Jun 2001 11:21:14 -0700 (PDT) (envelope-from jhb@FreeBSD.org) Message-ID: X-Mailer: XFMail 1.4.0 on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <20010623031738P.matusita@jp.FreeBSD.org> Date: Fri, 22 Jun 2001 11:30:01 -0700 (PDT) From: John Baldwin To: Makoto MATSUSHITA Subject: Re: lock order reversal Cc: current@FreeBSD.org Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On 22-Jun-01 Makoto MATSUSHITA wrote: > > jhb> Can you turn on WITNESS_DDB in your kenrel config file (or set > jhb> the debug.witness_ddb loader tunable/sysctl before you get this > jhb> reversal) and get a backtrace from ddb? > > Yes; I turned 'debug.witness_ddb' on now. I'll send a ddb 'trace' > output if next time lock-order-reversal is happen. You will have to reboot for it to fire. We only report the first lock order found between two locks to avoid flooding the console. -- John Baldwin -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.baldwin.cx/~john/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message