linux-kernel - Re: early exception error

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Date:	Sun, 4 Jan 2009 00:24:26 +0300
From:	Cyrill Gorcunov <gorcunov@...il.com>
To:	david@...g.hm, Andi Kleen <andi@...stfloor.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: early exception error

[Cyrill Gorcunov - Sat, Jan 03, 2009 at 10:03:16PM +0300]
| (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 -

Hardly possible that we trigger BUG here since I don't
see BUG: on the photo. Investigating.

		- Cyrill -
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