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Date: Fri, 1 Aug 2003 18:04:43 -0400 (EDT)
From: Daniel Eischen <eischen@vigrid.com>
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To: Thorsten Greiner <thorsten.greiner@web.de>
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cc: Julian Elischer <julian@elischer.org>
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Subject: Re: NVidia glx stuff dies in sysarch(I386_SET_LDT, ...)
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On Fri, 1 Aug 2003, Thorsten Greiner wrote:

> * Thorsten Greiner <thorsten.greiner@web.de> [2003-08-01 23:47]:
> > I will test wether the problem still occurs with version 1.84 of
> > sys_machdep.c and let you know.
> 
> Yup, reverting to 1.84 unbreaks this for me. Looking at the changes
> made it appears to me that the check
> 
>         if (uap->start < NLDT || uap->num <= 0)
>             return (EINVAL);i
> 
> causes this, because NLDT is 6 and the NVidia stuff passes
> uap->start == 6 to this call.

It can't use 6.  FreeBSD reserves 0-16 for its own use.

I think the bug was in the old code allowing this to
happen...

-- 
Dan Eischen