From owner-freebsd-current@FreeBSD.ORG Fri Apr 4 13:06:43 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 BB59B106566C; Fri, 4 Apr 2008 13:06:43 +0000 (UTC) (envelope-from ml@t-b-o-h.net) Received: from vjofn.tucs-beachin-obx-house.com (vjofn-pt.tunnel.tserv1.fmt.ipv6.he.net [IPv6:2001:470:1f00:ffff::5e5]) by mx1.freebsd.org (Postfix) with ESMTP id 639B08FC12; Fri, 4 Apr 2008 13:06:43 +0000 (UTC) (envelope-from ml@t-b-o-h.net) Received: from himinbjorg.tucs-beachin-obx-house.com ([208.45.246.58]) (authenticated bits=0) by vjofn.tucs-beachin-obx-house.com (8.14.2/8.14.2) with ESMTP id m34D6VRH078287; Fri, 4 Apr 2008 09:06:42 -0400 (EDT) Received: from himinbjorg.tucs-beachin-obx-house.com (localhost.tucs-beachin-obx-house.com [127.0.0.1]) by himinbjorg.tucs-beachin-obx-house.com (8.13.8/8.13.6) with ESMTP id m34D6Nsd019219; Fri, 4 Apr 2008 09:06:24 -0400 (EDT) (envelope-from ml@t-b-o-h.net) Received: (from tbohml@localhost) by himinbjorg.tucs-beachin-obx-house.com (8.13.8/8.13.6/Submit) id m34D6NiF019218; Fri, 4 Apr 2008 09:06:23 -0400 (EDT) (envelope-from tbohml) From: "Tuc at T-B-O-H.NET" Message-Id: <200804041306.m34D6NiF019218@himinbjorg.tucs-beachin-obx-house.com> To: rpaulo@freebsd.org (Rui Paulo) Date: Fri, 4 Apr 2008 09:06:23 -0400 (EDT) In-Reply-To: <20080404095923.GA955@fnop.net> X-Mailer: ELM [version 2.5 PL8] MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: freebsd-current@freebsd.org, "Tuc at T-B-O-H.NET" Subject: Re: Reproducable Kernel HARD lockup 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: Fri, 04 Apr 2008 13:06:43 -0000 > > On Fri, Apr 04, 2008 at 12:24:26AM -0400, Tuc at T-B-O-H.NET wrote: > > Hi, > > > > LONG LONG LONG story made short. > > > > Running Soekris 4801-60 previously on 5.5 . Would lock up > > every so often, then more often, then finally constantly. Shipped > > back to vendor, replaced, all good. Months later started to lock > > every few weeks, then every few hours. Replace CF with hard drive, > > locks in 10 minutes, etc. > > > > Load OpenBSD on disk. Runs for days with no problem. > > Decide I don't like OpenBSD ports system so decide to go FreeBSD > > 7. Glitch with memory stick, but otherwise system seems to run > > fine. Start SETI, system locks HARD. I have it set to be able > > to break to debugger with CR ~ ^b, but that just doesn't happen. > > (Previously tested it would in single user when system running > > fine). > > > > Is there any way to debug a kernel lockup if you CAN'T > > break to debugger?? > > http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug.html > > Hope this helps. > Unfortunately, not that I can see. Kernel already had : options KDB options KDB_TRACE options KDB_UNATTENDED options DDB #break on sequence CR ~ ^b options ALT_BREAK_TO_DEBUGGER And I couldn't break to the debugger for love nor money once it happens. I also can't remote debug due to my 7.0 system not having a serial port. Thanks, Tuc