From owner-freebsd-bugs Tue Dec 19 00:42:28 1995 Return-Path: owner-bugs Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id AAA01089 for bugs-outgoing; Tue, 19 Dec 1995 00:42:28 -0800 (PST) Received: from who.cdrom.com (who.cdrom.com [192.216.222.3]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id AAA01084 for ; Tue, 19 Dec 1995 00:42:24 -0800 (PST) Received: from hda.com (hda.com [199.232.40.182]) by who.cdrom.com (8.6.12/8.6.11) with ESMTP id AAA02630 for ; Tue, 19 Dec 1995 00:37:51 -0800 Received: (from dufault@localhost) by hda.com (8.6.11/8.6.9) id DAA19622; Tue, 19 Dec 1995 03:42:53 -0500 From: Peter Dufault Message-Id: <199512190842.DAA19622@hda.com> Subject: Re: Problem with FreeBSD 2.1.0-RELEASE To: davidg@Root.COM Date: Tue, 19 Dec 1995 03:42:52 -0500 (EST) Cc: gibbs@freefall.freebsd.org, m.sapsed@bangor.ac.uk, hm@hcs.de, freebsd-bugs@freebsd.org In-Reply-To: <199512190342.TAA02913@corbin.Root.COM> from "David Greenman" at Dec 18, 95 07:42:33 pm X-Mailer: ELM [version 2.4 PL24] Content-Type: text Sender: owner-bugs@freebsd.org Precedence: bulk > >> Fatal trap 12: page fault while in kernel mode > >> Fault virtual address = 0x60 > >> Fault code = supervisor read, page not present > ... > >> Stopped at _incore+0x48: cmpl %esi, 0x48(%ebx) > > ... > > This is a "can't happen" panic. I don't think so. The offset to the b_lblkno was 72 (0x48) and the fault address was 0x60, so the bp in %ebx was 0x24 at the check for NULL. -- Peter Dufault Real Time Machine Control and Simulation HD Associates, Inc. Voice: 508 433 6936 dufault@hda.com Fax: 508 433 5267