From owner-freebsd-questions Fri Dec 17 11:50:37 1999 Delivered-To: freebsd-questions@freebsd.org Received: from chronis.pobox.com (chronis.pobox.com [208.210.124.49]) by hub.freebsd.org (Postfix) with ESMTP id 453EF157E7 for ; Fri, 17 Dec 1999 11:50:25 -0800 (PST) (envelope-from scott@chronis.pobox.com) Received: by chronis.pobox.com (Postfix, from userid 1001) id C276E9B7A; Fri, 17 Dec 1999 14:50:12 -0500 (EST) Date: Fri, 17 Dec 1999 14:50:12 -0500 From: scott To: freebsd-questions@freebsd.org Subject: Re: system freeze: how to debug? Message-ID: <19991217145012.A19799@chronis.pobox.com> Mail-Followup-To: freebsd-questions@freebsd.org References: <19991216235723.A9224@chronis.pobox.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95.7i In-Reply-To: Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG db> trace Debugger(e01e9787) at Debugger+0x37 panic (c01f8b56, cb2cff58, c019ddf5, 1c0f000, 7a0f000) at panic+0x74 pmap_copy_page (1c0f000, 7a0f000, cb2af620) at pmap_copy_page+0x21 vm_fault (cb2c0e80, 28141000, 3, 8, cb2af620) at vm_fault+0x721 trap_pfault (cb2cffbc, 1, 281416f0) at trap_pfault+0xaa trap (8120027, bfbf0027, 0, 8129000, bfbfd5ec) at trap+0x1aa calltrap() at calltrap+0x1c --- trap 0xc, eip=0x80662ac esp=0xbfbfd5e0 ebp=0xbfbfd5ec --- Any ideas what that means? scott On Thu, Dec 16, 1999 at 11:15:27PM -0600, David Scheidt wrote: > On Thu, 16 Dec 1999, scott wrote: > > > I have a 3.3 release system that keeps freezing when stressed. It is > > running postfix, and that's all. When it freezes, there is no kernel > > dump, no console message, no log messages. It simply will not respond > > to anything, console or otherwise, except to recycle the power. > > > > How do I get this system to be more informative about what is causing > > this problem? > > Put > options DDB > in your kernel config, config -g your kernel, make and install it, and wait > for it to hang. When it does, use CTRL-ALT-ESC to break into the debugger. > Type trace , copy down the output, then do panic continue > . > > Save the crashdump, and post the stack trace. There are instructions on > this in section 22 of the handbook < > http://www.freebsd.org/handbook/kerneldebug.html > or your local copy. You > probably should read that first. > > Regards, > > David Scheidt > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message