From owner-freebsd-current@FreeBSD.ORG Wed Dec 17 14:30:50 2008 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 65243106564A for ; Wed, 17 Dec 2008 14:30:50 +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 E27778FC1E for ; Wed, 17 Dec 2008 14:30:49 +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 E91E6198EC7 for ; Wed, 17 Dec 2008 15:30:48 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by virusscan.mail (Postfix) with ESMTP id DD88B198EBD for ; Wed, 17 Dec 2008 15:30:48 +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 C8DB1198E91 for ; Wed, 17 Dec 2008 15:30:48 +0100 (CET) Received: from wep4035 ([132.187.37.35]) by mail.physik.uni-wuerzburg.de (Lotus Domino Release 8.0.2HF443) with ESMTP id 2008121715304823-69196 ; Wed, 17 Dec 2008 15:30:48 +0100 Received: by wep4035 (sSMTP sendmail emulation); Wed, 17 Dec 2008 15:30:48 +0100 From: "Alexey Shuvaev" Date: Wed, 17 Dec 2008 15:30:48 +0100 To: freebsd-current@freebsd.org Message-ID: <20081217143048.GA86431@wep4035.physik.uni-wuerzburg.de> References: <4947C526.2080702@citrin.ru> <20081217100406.GA1595@wep4035.physik.uni-wuerzburg.de> <3a142e750812170612j1d656284s20c65542b85578eb@mail.gmail.com> MIME-Version: 1.0 In-Reply-To: <3a142e750812170612j1d656284s20c65542b85578eb@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 12/17/2008 03:30:48 PM, Serialize by Router on domino1/uni-wuerzburg(Release 8.0.2HF443 | November 25, 2008) at 12/17/2008 03:30:48 PM, Serialize complete at 12/17/2008 03:30:48 PM Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Virus-Scanned: by amavisd-new at uni-wuerzburg.de 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: Wed, 17 Dec 2008 14:30:50 -0000 On Wed, Dec 17, 2008 at 03:12:40PM +0100, Paul B. Mahol wrote: > On 12/17/08, Alexey Shuvaev wrote: > > On Tue, Dec 16, 2008 at 06:11:34PM +0300, 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. > >> > > Me too! > > > > The system is: > > # uname -a > > FreeBSD wep4035 8.0-CURRENT FreeBSD 8.0-CURRENT #0: Mon Dec 15 14:21:48 CET > > 2008 > > root@wep4035:/usr/obj/usr/src/sys/USB2 amd64 > > > > It can hang even in single user mode with only / mounted read-only, > > but with already configured network (msk). I have never seen how it > > happens, however :( > > Looks like syscons problem, does it happen with kern.smp.disabled=1? > I don't see it yet for FreeBSD wep4035 8.0-CURRENT FreeBSD 8.0-CURRENT #0: Tue Dec 16 18:47:56 CET 2008 root@wep4035:/usr/obj/usr/src/sys/USB2 amd64 With 15 Dec current it should already be hanging. Alexey.