From owner-freebsd-current Tue Apr 18 18:38: 4 2000 Delivered-To: freebsd-current@freebsd.org Received: from localhost (localhost [127.0.0.1]) by hub.freebsd.org (Postfix) with ESMTP id 148C737B9BF; Tue, 18 Apr 2000 18:37:59 -0700 (PDT) (envelope-from green@FreeBSD.org) Date: Tue, 18 Apr 2000 21:37:57 -0400 (EDT) From: Brian Fundakowski Feldman X-Sender: green@green.dyndns.org To: Alan Cox Cc: Matthew Dillon , Alfred Perlstein , Michael Reifenberger , current@freebsd.org, alc@freebsd.org Subject: Re: Anyone able to verify the fix for (was Re: panic: vm_object_shadow: source object has OBJ_ONEMAPPING set.) In-Reply-To: <20000418194126.C2616@cs.rice.edu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Tue, 18 Apr 2000, Alan Cox wrote: > This patch introduces a new bug. While it does guarantee that > the assertion in vm_object_shadow isn't tripped over, it doesn't > clear the OBJ_ONEMAPPING flag on the newly created shadow object. > (New objects are created with OBJ_ONEMAPPING set.) Consequently, > we'll have two overlapping mappings to the same shadow object > that has OBJ_ONEMAPPING set. That's bad. Well, it didn't blow up my computer; that's good! It prevented the panic, and it can't possibly be worse than my previous patch. > The real problem is that the assertion is just plain wrong, not > the code around it. It needs to be corrected or removed. As I suspected all along ;) > Alan -- Brian Fundakowski Feldman \ FreeBSD: The Power to Serve! / green@FreeBSD.org `------------------------------' To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message