From owner-freebsd-hackers Sat Dec 7 14:54:48 1996 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.4/8.8.4) id OAA14058 for hackers-outgoing; Sat, 7 Dec 1996 14:54:48 -0800 (PST) Received: from dyson.iquest.net (dyson.iquest.net [198.70.144.127]) by freefall.freebsd.org (8.8.4/8.8.4) with ESMTP id OAA14052 for ; Sat, 7 Dec 1996 14:54:45 -0800 (PST) Received: (from root@localhost) by dyson.iquest.net (8.8.2/8.6.9) id RAA12987; Sat, 7 Dec 1996 17:54:32 -0500 (EST) From: "John S. Dyson" Message-Id: <199612072254.RAA12987@dyson.iquest.net> Subject: Re: Re[2]: FreeBSD 2.1: panic: vm_page_free: invalid wire count To: Gregory_D_Moncreaff@ccmail.ed.ray.com Date: Sat, 7 Dec 1996 17:54:31 -0500 (EST) Cc: dg@root.com, hackers@freebsd.org In-Reply-To: <01ICQHQ35F4Y003FF8@ZEUS.ED.RAY.COM> from "Gregory_D_Moncreaff@ccmail.ed.ray.com" at Dec 7, 96 04:32:00 pm Reply-To: dyson@freebsd.org X-Mailer: ELM [version 2.4 PL24 ME8] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk > I don't understand why it would show up now, and only > on one of the 6 machines I have running the same verion > of FreeBSD. > > Re the 2.1.6.1R version, has Walnut Creek got that on CDROM yet, > their page says 2.1.5 is the version they have... > One of the reasons that bugs like this occur at all is that they are not always reproduceable. No matter how careful I am when I write or port code, it appears that bugs sometimes appear. When testing, if I don't encounter it, I sometimes assume that there is none, and commit it to the system. You have encountered such a bug. It is likely that a few people had encountered it during testing, but maybe not? You are seeing the same syndrome that I see when I modify or write kernel code. It can appear to work perfectly for 99% of the people 99% of the time, but when the bug is found, it is amazing that the code ever worked at all! John