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Date:      Tue, 17 Sep 2002 19:23:20 +0200 (CEST)
From:      Martin Blapp <mb@imp.ch>
To:        Nate Lawson <nate@root.org>
Cc:        <current@freebsd.org>, <peter@freebsd.org>
Subject:   Re: Crashdumps available for download ... please help
Message-ID:  <20020917192159.I3162-100000@levais.imp.ch>
In-Reply-To: <Pine.BSF.4.21.0209171014370.40800-100000@root.org>

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Hi,

> Try building your kernel with "options PMAP_REMOVE_PAGES_CURPROC_ONLY" and
> see if the panic goes away.  If that works, the problem is
> pmap_pte_quick().

I'll do ASAP. I'm at work at the moment, and the box in question is
at home :).

Thanks very much for looking into that !

> In looking at pmap_pte_quick, either it is wrong or line 2941 is wrong in
> always dereferencing pte.  pmap_pte_quick can return NULL (well 0).  It
> seems like pmap_pte_quick is wrong because vtopte() never returns NULL,
> just (PTmap + i386_btop(va)) i.e. a valid base plus some offset.

Martin


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