From owner-freebsd-current Thu Feb 28 19: 3:30 2002 Delivered-To: freebsd-current@freebsd.org Received: from mail6.speakeasy.net (mail6.speakeasy.net [216.254.0.206]) by hub.freebsd.org (Postfix) with ESMTP id 6EE3C37B400 for ; Thu, 28 Feb 2002 19:03:28 -0800 (PST) Received: (qmail 12871 invoked from network); 1 Mar 2002 03:03:24 -0000 Received: from unknown (HELO server.baldwin.cx) ([65.91.152.157]) (envelope-sender ) by mail6.speakeasy.net (qmail-ldap-1.03) with DES-CBC3-SHA encrypted SMTP for ; 1 Mar 2002 03:03:24 -0000 Received: from laptop.baldwin.cx (john@laptop.baldwin.cx [192.168.0.4]) by server.baldwin.cx (8.11.6/8.11.6) with ESMTP id g2133EG42759; Thu, 28 Feb 2002 22:03:14 -0500 (EST) (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: <200203010153.g211ruo05300@bunrab.catwhisker.org> Date: Thu, 28 Feb 2002 22:03:07 -0500 (EST) From: John Baldwin To: David Wolfskill Subject: Re: Assertion faild at kern_mutex.c Cc: FreeBSD-current@FreeBSD.ORG, kuriyama@imgsrc.co.jp 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 01-Mar-02 David Wolfskill wrote: >>Date: Fri, 01 Mar 2002 10:47:09 +0900 >>From: Jun Kuriyama > >>At Fri, 1 Mar 2002 01:34:17 +0000 (UTC), >>John Baldwin wrote: >>> That's bad juju panic. :) Are you using witness? If so, did you get a >>> printf >>> about sleeping with a lock held? > >>I think I did not get lock warning just before this assertion >>failure. But on my environment, I got this lock order reversal >>everytime I booted. > >>lock order reversal >> 1st 0xc036afc0 allproc @ ../../../kern/vfs_syscalls.c:452 >> 2nd 0xc7ecce34 filedesc structure @ ../../../kern/vfs_syscalls.c:457 > > Although I did not get the reported panic, I have also had a very > similar lock order reversal reported since (at least) the -CURRENT of > 22 Feb. (which as far back as I presently keep the message log). > > I'm skeptical that there is a significant relationship between the panic > & the lock order reversal. There's not. The panic is due to some process being asleep or something while holding a mutex. That reversal is a known problem that involves redoing select a bit. -- John Baldwin <>< http://www.FreeBSD.org/~jhb/ "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