From owner-freebsd-current@FreeBSD.ORG Tue Aug 10 18:53:16 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 02B2D16A4D7 for ; Tue, 10 Aug 2004 18:53:16 +0000 (GMT) Received: from pd3mo2so.prod.shaw.ca (shawidc-mo1.cg.shawcable.net [24.71.223.10]) by mx1.FreeBSD.org (Postfix) with ESMTP id D343543D5F for ; Tue, 10 Aug 2004 18:53:15 +0000 (GMT) (envelope-from colin.percival@wadham.ox.ac.uk) Received: from pd5mr1so.prod.shaw.ca (pd5mr1so-qfe3.prod.shaw.ca [10.0.141.232]) by l-daemon (iPlanet Messaging Server 5.2 HotFix 1.18 (built Jul 28 2003)) with ESMTP id <0I2800CBZURZL4@l-daemon> for freebsd-current@freebsd.org; Tue, 10 Aug 2004 12:45:35 -0600 (MDT) Received: from pn2ml4so.prod.shaw.ca ([10.0.121.148]) by pd5mr1so.prod.shaw.ca (Sun ONE Messaging Server 6.0 HotFix 1.01 (built Mar 15 2004)) with ESMTP id <0I280010GURTJYJ0@pd5mr1so.prod.shaw.ca> for freebsd-current@freebsd.org; Tue, 10 Aug 2004 12:45:29 -0600 (MDT) Received: from piii600.wadham.ox.ac.uk (S0106006067227a4a.vc.shawcable.net [24.87.233.42]) by l-daemon (iPlanet Messaging Server 5.2 HotFix 1.18 (built Jul 28 2003)) with ESMTP id <0I280020HURSL9@l-daemon> for freebsd-current@freebsd.org; Tue, 10 Aug 2004 12:45:29 -0600 (MDT) Date: Tue, 10 Aug 2004 11:45:09 -0700 From: Colin Percival In-reply-to: <20040810203073.SM01804@manrikigusari> X-Sender: cperciva@popserver.sfu.ca (Unverified) To: root@mediamonks.net Message-id: <6.1.0.6.1.20040810114002.03ef96c8@popserver.sfu.ca> MIME-version: 1.0 X-Mailer: QUALCOMM Windows Eudora Version 6.1.0.6 Content-type: text/plain; charset=us-ascii References: <20040810203073.SM01804@manrikigusari> cc: freebsd-current@freebsd.org Subject: Re: Lock order reversal in 5.2-CURRENT X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 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: Tue, 10 Aug 2004 18:53:16 -0000 At 11:29 10/08/2004, Terrence Koeman wrote: >lock order reversal > 1st 0xc0645aa0 sched lock (sched lock) @ /usr/src/sys/vm/vm_zeroidle.c:156 > 2nd 0xc06748c0 sio (sio) @ /usr/src/sys/dev/sio/sio.c:3039 > >This LOR is not on http://sources.zabbadoz.net/freebsd/lor.html, so I'm >guessing this one locked up my system. This is LOR #013 on bzeeb's list. There isn't any solution yet, but there is a simple workaround: unplug the serial console. Colin Percival