From owner-freebsd-current@FreeBSD.ORG Sun Jan 11 19:37:08 2009 Return-Path: Delivered-To: current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id AE3901065672; Sun, 11 Jan 2009 19:37:08 +0000 (UTC) (envelope-from shuvaev@physik.uni-wuerzburg.de) Received: from mailrelay.rz.uni-wuerzburg.de (mailrelay.rz.uni-wuerzburg.de [132.187.3.28]) by mx1.freebsd.org (Postfix) with ESMTP id 3737B8FC1D; Sun, 11 Jan 2009 19:37:08 +0000 (UTC) (envelope-from shuvaev@physik.uni-wuerzburg.de) Received: from virusscan.mail (localhost [127.0.0.1]) by mailrelay.mail (Postfix) with ESMTP id 411CE198DF7; Sun, 11 Jan 2009 20:06:13 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by virusscan.mail (Postfix) with ESMTP id 342F6198DF6; Sun, 11 Jan 2009 20:06:13 +0100 (CET) Received: from mail.physik.uni-wuerzburg.de (wthp192.physik.uni-wuerzburg.de [132.187.40.192]) by mailmaster.uni-wuerzburg.de (Postfix) with ESMTP id 1FE9C198DF5; Sun, 11 Jan 2009 20:06:13 +0100 (CET) Received: from wep4035 ([132.187.37.35]) by mail.physik.uni-wuerzburg.de (Lotus Domino Release 8.0.2HF443) with ESMTP id 2009011120061248-54050 ; Sun, 11 Jan 2009 20:06:12 +0100 Received: by wep4035 (sSMTP sendmail emulation); Sun, 11 Jan 2009 20:06:12 +0100 From: "Alexey Shuvaev" Date: Sun, 11 Jan 2009 20:06:12 +0100 To: Attilio Rao Message-ID: <20090111190612.GA3700@wep4035.physik.uni-wuerzburg.de> References: <4947C526.2080702@citrin.ru> <494B740B.4080602@citrin.ru> <3bbf2fe10901050751y74ccd7e3va68fea0634fbd79f@mail.gmail.com> MIME-Version: 1.0 In-Reply-To: <3bbf2fe10901050751y74ccd7e3va68fea0634fbd79f@mail.gmail.com> Organization: Universitaet Wuerzburg User-Agent: Mutt/1.5.18 (2008-05-17) X-MIMETrack: Itemize by SMTP Server on domino1/uni-wuerzburg(Release 8.0.2HF443 | November 25, 2008) at 01/11/2009 08:06:12 PM, Serialize by Router on domino1/uni-wuerzburg(Release 8.0.2HF443 | November 25, 2008) at 01/11/2009 08:06:13 PM, Serialize complete at 01/11/2009 08:06:13 PM Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Virus-Scanned: by amavisd-new at uni-wuerzburg.de Cc: current@freebsd.org Subject: Re: hangup (livelock) - db> prompt in endless loop 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: Sun, 11 Jan 2009 19:37:09 -0000 On Mon, Jan 05, 2009 at 04:51:04PM +0100, Attilio Rao wrote: > 2008/12/19 Anton Yuzhaninov : > > Anton Yuzhaninov wrote: > >> > >> My box with fresh current sometimes stops to respond. > >> > >> On screen in endless loop printed debugger prompt > >> > >> db> > >> > >> but I can't type anything here. > >> > >> Alt+Ctrl+Esc and Alt+Ctrl+Del don't stops this loop. > >> > >> How I can debug this problem? > >> > >> system: current from Mon Dec 15 16:16:23 MSK 2008 with GENERIC kernel, > >> amd64, SMP. > >> > > > > With more fresh current - Wed Dec 17 21:09:38 > > Panic not repeated. > > This is probabilly a bug in the DDB lookup function. > It just stops immediately or after a couple of commands? (and if it > does, which comands exactly?) > Hi! I've seen this too - but only with one src checkout. The symptoms as they are observed: Leave the system with Xorg turned off (text mode), logout all users, switch to ttyv0 (not sure about this) and go away. When you are back, you see db> prompt running on the screen. This was amd64 CURRENT with GENERIC kernel. So, there was no user interaction (via keyboard). Hope, this helps, Alexey.