From owner-freebsd-stable Fri Feb 20 10:34:03 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id KAA08873 for freebsd-stable-outgoing; Fri, 20 Feb 1998 10:34:03 -0800 (PST) (envelope-from owner-freebsd-stable@FreeBSD.ORG) Received: from fledge.watson.org (root@FLEDGE.RES.CMU.EDU [128.2.91.116]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id KAA08806 for ; Fri, 20 Feb 1998 10:33:48 -0800 (PST) (envelope-from robert@cyrus.watson.org) Received: from trojanhorse.pr.watson.org (trojanhorse.pr.watson.org [192.0.2.10]) by fledge.watson.org (8.8.8/8.6.10) with SMTP id NAA22679; Fri, 20 Feb 1998 13:33:35 -0500 (EST) Date: Fri, 20 Feb 1998 13:32:48 -0500 (EST) From: Robert Watson X-Sender: robert@trojanhorse.pr.watson.org Reply-To: Robert Watson To: John Robert LoVerso cc: stable@FreeBSD.ORG Subject: Re: 2.2-980219-SNAP GENERIC reboots In-Reply-To: <199802201652.LAA10948@postman.opengroup.org> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk On Fri, 20 Feb 1998, John Robert LoVerso wrote: > I have a PPro 180 (Dec Celebris GL180) that I just upgraded from 2.2.1 to > the 2.2-980219-SNAP. Right after upgrading, the machine crashed and rebooted > several times. AFAIK, it always happened when I was giving Netscape 4.04 a > mouse click (or PageDown key). Unfortunately, I don't have a backtrace > because a dump device wasn't configured then. However, since adding a > dump device, I've also built a non-GENERIC kernel (no I386_CPU/I486_CPU, > some other changes), and I haven't had the machine crash since. > > I just note this because before I went to the non-GENERIC kernel, the system > was anything but "stable". I had that problem on the 0216 -GENERIC kernel. I also did not have DDB or dumping available -- the machine would bite when it first attempted to swap -- supervisor read, page not present, etc. As soon as I stuck a custom kernel on the machine (with DDB), it stopped happening. If there is interest, I can turn on a dump device and boot the GENERIC kernel again and see what happens. To trigger it, all I needed to do was have it swap a little bit: #include void main(void) { int i; char *b; while (1) { b = (char *) malloc(8192); for (i = 0 ; i < 8000; i += 5) { b[i] = '\1'; } } } Robert N Watson Carnegie Mellon University http://www.cmu.edu/ SafePort Network Services http://www.safeport.com/ robert@fledge.watson.org http://www.watson.org/~robert/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message