linux-kernel - Re: early exception error

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Message-ID: <20081231012542.GP496@one.firstfloor.org>
Date:	Wed, 31 Dec 2008 02:25:42 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	david@...g.hm
Cc:	Andi Kleen <andi@...stfloor.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: early exception error

On Tue, Dec 30, 2008 at 05:39:29PM -0800, david@...g.hm wrote:
> On Wed, 31 Dec 2008, Andi Kleen wrote:
> 
> >david@...g.hm writes:
> >>
> >>doing a grep through System.map for the address that appears in the
> >>error returns nothing
> >
> >This might be obvious, but you can't grep directly for these addresses
> >because System.map contains the starting addresses of functions only
> >and normally the reported address is somewhere in the middle of a
> >function. So you instead have to look for the highest number lower or equal
> >the address from the exception.
> 
> thanks, this was not obvious to me
> 
> the -2 error maps to

You should also boot with earlyprintk=vga to get more context.

-Andi
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