linux-kernel - Re: early exception error

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Message-ID: <20090103190316.GB7367@localhost>
Date:	Sat, 3 Jan 2009 22:03:16 +0300
From:	Cyrill Gorcunov <gorcunov@...il.com>
To:	david@...g.hm
Cc:	Andi Kleen <andi@...stfloor.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: early exception error

(list restored)

[david@...g.hm - Sat, Jan 03, 2009 at 11:19:00AM -0800]
...
>>>
>>> two new screenshots at http://linux.lang.hm/linux
>>>
>>> 36 is a boot with just earlyprintk=vga
>>> 37 is a boot with numa=noacpi
>>> I also put the vmlinux file there, I'll put the System.map and config
>>> there later (I did enable kernel_debug on this build as well)
>>>
>>> David Lang
>>>
>>
>> David, I can't find vmlinux neither .config?
>> Maybe they have hidden attribute?
>
> oops, they are there now.
>
> David Lang
>

ok, according to failing address we've a BUG_ON
triggered

---
(gdb) l *0xffffffff8096452a
0xffffffff8096452a is in alloc_bootmem_core (mm/bootmem.c:442).
437		unsigned long fallback = 0;
438		unsigned long min, max, start, sidx, midx, step;
439	
440		BUG_ON(!size);
441		BUG_ON(align & (align - 1));
442		BUG_ON(limit && goal + size > limit);
443	
444		if (!bdata->node_bootmem_map)
445			return NULL;
446	
(gdb) 
---

so we're in attempt to overrun 'limit'.
Hmm...

		- Cyrill -
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