From owner-freebsd-current Fri Jan 12 20: 9:37 2001 Delivered-To: freebsd-current@freebsd.org Received: from meow.osd.bsdi.com (meow.osd.bsdi.com [204.216.28.88]) by hub.freebsd.org (Postfix) with ESMTP id 5EC6A37B402 for ; Fri, 12 Jan 2001 20:09:20 -0800 (PST) Received: from laptop.baldwin.cx (john@jhb-laptop.osd.bsdi.com [204.216.28.241]) by meow.osd.bsdi.com (8.11.1/8.9.3) with ESMTP id f0D48W148004; Fri, 12 Jan 2001 20:08:33 -0800 (PST) (envelope-from jhb@FreeBSD.org) Message-ID: X-Mailer: XFMail 1.4.0 on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <20010112190554.E7240@fw.wintelcom.net> Date: Fri, 12 Jan 2001 20:09:20 -0800 (PST) From: John Baldwin To: Alfred Perlstein Subject: Re: Anybody else seeing a broken /dev/lpt with SMP on -current? Cc: current@FreeBSD.org, Jordan Hubbard Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On 13-Jan-01 Alfred Perlstein wrote: > * John Baldwin [010112 18:56] wrote: >> >> On 13-Jan-01 Jordan Hubbard wrote: >> > I've actually been seeing this for about 2 months now but only just >> > now got motivated enough to enable crashdumps and get some information >> > on what happens whenver I try to use the printer attached to my (sadly :) >> > -current SMP box: >> > >> >> All the other traces show the kerenl having returned to an address that is >> beyongd the end of the kernel (which causes the page fault) meaning that the >> stack is fubar'd, so the trace isn't meaningful anyways. :( Knowing how and >> why the lpd interrupt handler trashes the stack is the useful info, and with >> teh stack already trashed, I don't know of an easy way to figure that out. >> Suggestions welcome. > > printf(9) > >:) Maybe if I had a printer lying around. :) I can send jkh some patches to dump out stuff, but I was looking more for suggestions on making sense of the crashdump, not just brute-forcing it. :-P > -Alfred -- John Baldwin -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.baldwin.cx/~john/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message