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Date: Wed, 05 Mar 2008 10:03:08 +0100
From: Kris Kennaway <kris@FreeBSD.org>
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Cc: freebsd-hackers@freebsd.org
Subject: Re: Kernel crash on Asus A7N8X-X
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Frédéric PRACA wrote:
> Hello dear hackers,
> I own a Asus A7N8X-X motherboard (NForce2 chipset) with a Radeon 9600 video
> card. After upgrading from 6.3 to 7.0, I launched xorg which crashed the kernel.
> After looking in the kernel core dump, I found that the agp_nvidia_flush_tlb
> function of /usr/src/sys/pci/agp_nvidia.c crashed on the line 377. The loop
> fails from the beginning (when i==0). I commented out the two last loops and it
> seems to work now but as I didn't understand what is this code for, I'd like to
> have some explanation about it and want to know if someone got the same problem.

Usually it's a good idea to show the data that led to your conclusions 
(backtraces, etc), not just your conclusions.  Sometimes there is more 
going on than is immediately apparent.

Krs