From owner-freebsd-stable Tue Feb 27 11: 5:59 2001 Delivered-To: freebsd-stable@freebsd.org Received: from sydney.worldwide.lemis.com (dhcp183.sitaranetworks.com [199.103.141.183]) by hub.freebsd.org (Postfix) with ESMTP id 53DB137B719 for ; Tue, 27 Feb 2001 11:05:48 -0800 (PST) (envelope-from grog@sydney.worldwide.lemis.com) Received: (from grog@localhost) by sydney.worldwide.lemis.com (8.11.1/8.9.3) id f1QFUle15212; Mon, 26 Feb 2001 09:30:47 -0600 (CST) (envelope-from grog) Date: Mon, 26 Feb 2001 09:30:47 -0600 From: Greg Lehey To: Peter Blok Cc: freebsd-stable@freebsd.org Subject: Re: DDB watch Message-ID: <20010226093046.A15164@sydney.worldwide.lemis.com> References: <000501c09f75$35b888d0$8a02a8c0@ntpc> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0i In-Reply-To: <000501c09f75$35b888d0$8a02a8c0@ntpc>; from Peter.Blok@inter.NL.net on Sun, Feb 25, 2001 at 10:52:11PM +0100 Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-418-838-708 WWW-Home-Page: http://www.lemis.com/~grog X-PGP-Fingerprint: 6B 7B C3 8C 61 CD 54 AF 13 24 52 F8 6D A4 95 EF Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sunday, 25 February 2001 at 22:52:11 +0100, Peter Blok wrote: > Hi, > > I was trying to setup a "watch" in DDB. When it hits it, the kernel > reboots. Am I doing something wrong or isn't it working. I start up > with boot -d set a breakpoint somewhere, hits breakpoint and set > watchpoint. After the continue it crashes, without a backtrace. Just > a black screen and reboot. There are places where you can't set a breakpoint. An obvious place is in the ddb code: if you hit a breakpoint there, you're going to recurse to the top of the stack and crash. There are other less obvious places, and I suspect that's what you have hit. Greg -- Finger grog@lemis.com for PGP public key See complete headers for address and phone numbers To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message