Date: Tue, 30 Dec 2008 17:39:29 -0800 (PST)
From: david@lang.hm
To: Andi Kleen <andi@firstfloor.org>
cc: linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: early exception error
In-Reply-To: <87k59hur5f.fsf@basil.nowhere.org>
Message-ID: <alpine.DEB.1.10.0812301737320.16936@asgard.lang.hm>
References: <alpine.DEB.1.10.0812301416550.16847@asgard.lang.hm> <87k59hur5f.fsf@basil.nowhere.org>
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On Wed, 31 Dec 2008, Andi Kleen wrote:

> david@lang.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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