linux-kernel - Re: early exception error

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Message-ID: <alpine.DEB.1.10.0812301737320.16936@asgard.lang.hm>
Date:	Tue, 30 Dec 2008 17:39:29 -0800 (PST)
From:	david@...g.hm
To:	Andi Kleen <andi@...stfloor.org>
cc:	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: early exception error

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

ffffffff8099e4c1 T free_bootmem_node
ffffffff8099e4e5 t alloc_bootmem_core
ffffffff8099e774 t ___alloc_bootmem_nopanic


the first error maps to

ffffffff809c2de4 T free_bootmem_node
ffffffff809c2e08 t alloc_bootmem_core
ffffffff809c3097 t ___alloc_bootmem_nopanic


so it looks like this is in alloc_bootmem_core in both cases.

David Lang
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