From owner-freebsd-stable Thu Feb 7 21:10:51 2002 Delivered-To: freebsd-stable@freebsd.org Received: from lists.blarg.net (lists.blarg.net [206.124.128.17]) by hub.freebsd.org (Postfix) with ESMTP id 9F26F37B417 for ; Thu, 7 Feb 2002 21:10:45 -0800 (PST) Received: from thig.blarg.net (thig.blarg.net [206.124.128.18]) by lists.blarg.net (Postfix) with ESMTP id E9F78BCAA for ; Thu, 7 Feb 2002 21:08:49 -0800 (PST) Received: from localhost.localdomain ([206.124.139.115]) by thig.blarg.net (8.9.3/8.9.3) with ESMTP id UAA31881 for ; Thu, 7 Feb 2002 20:38:47 -0800 Received: (from jojo@localhost) by localhost.localdomain (8.11.6/8.11.3) id g185AA000495; Thu, 7 Feb 2002 21:10:10 -0800 (PST) (envelope-from swear@blarg.net) To: freebsd-stable@freebsd.org Subject: How do I handle repeatable OS crash? From: swear@blarg.net (Gary W. Swearingen) Date: 07 Feb 2002 21:10:10 -0800 Message-ID: <3gpu3gwoct.u3g@localhost.localdomain> Lines: 19 User-Agent: Gnus/5.0808 (Gnus v5.8.8) XEmacs/21.1 (Cuyahoga Valley) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG I'm running 4.5-PRE from about 26'dec'02 and have a badly-burned CD-R with which I can repeatably hang the system by simply trying to mount it. I haven't seen any error messages in /var/log/messages, but did see a bunch of stuff come to the console which it seemed to be re-writing slightly differently (it seemed to be flashing) and which I failed to try to copy to paper. Any way to get that to go to a file when it's still writable? I'd like to know how to gather info for a good PR. Is this documented somewhere? I didn't see it in the Handbook. I suppose I can determine how to create a "crash file" from the dumpon man page, but I'll bet it'd be real helpful to have some cookbook recipes for using a debugger on the crash file. Which debugger? gdb? ddb? Can I do anything with a normal kernel, or do I HAVE to rebuild it with extra options? I'm thinking I should work with the now-old OS version because if I upgrade to 4.5-R or -S, some weird interaction may hide the bug. Even if it has simply been fixed, I'd sort of like to see how this works for next time, before upgrading the OS. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message