Date: Tue, 18 Apr 2000 21:37:57 -0400 (EDT) From: Brian Fundakowski Feldman <green@FreeBSD.org> To: Alan Cox <alc@cs.rice.edu> Cc: Matthew Dillon <dillon@apollo.backplane.com>, Alfred Perlstein <bright@wintelcom.net>, Michael Reifenberger <root@nihil.plaut.de>, 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.) Message-ID: <Pine.BSF.4.21.0004182136500.83565-100000@green.dyndns.org> In-Reply-To: <20000418194126.C2616@cs.rice.edu>
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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
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