linux-kernel - Re: /proc/kallsyms broken in 2.6.26-rc1-git6

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Message-ID: <20080512172836.GC6913@cvg>
Date:	Mon, 12 May 2008 21:28:36 +0400
From:	Cyrill Gorcunov <gorcunov@...il.com>
To:	Sam Ravnborg <sam@...nborg.org>
Cc:	Paulo Marques <pmarques@...popie.com>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Andi Kleen <andi@...stfloor.org>, linux-kernel@...r.kernel.org
Subject: Re: /proc/kallsyms broken in 2.6.26-rc1-git6

[Sam Ravnborg - Mon, May 12, 2008 at 07:23:23PM +0200]
| On Mon, May 12, 2008 at 07:50:52PM +0400, Cyrill Gorcunov wrote:
| > [Paulo Marques - Mon, May 12, 2008 at 11:00:32AM +0100]
| > > Alexey Dobriyan wrote:
| > >> On Fri, May 09, 2008 at 08:59:56PM +0100, Paulo Marques wrote:
| > >>> Andi Kleen wrote:
| > >>>> [...]
| > >>>> Yes and? Surely that's not correct?
| > >>> That's not for me to judge, but I believe it has always been like that.
| > >> *cough*
| > >> Here is how typical /proc/kallsyms looks like:
| > >> ffffffff80200000 A _text
| > >> ffffffff80200000 T startup_64
| > >> ffffffff802000b7 t ident_complete
| > >> ffffffff80200100 T secondary_startup_64
| > >
| > > This isn't helpful... the question is whether it is kallsyms misbehaving 
| > > and placing new symbols in the kernel image or if it is some other change 
| > > in the kernel that is generating new symbols that end up in the symbol 
| > > table.
| > >
| > > My guess it is that it is the later, and in that case, from a kallsyms 
| > > standpoint "it has always been like that".
| > >
| > > -- 
| > > Paulo Marques - www.grupopie.com
| > >
| > >
| > 
| > If it help - I've taken Andi's config, compiled the kernel and
| > didn't find any screwed symbols (nor is System.map nor in /proc/kallsyms).
| 
| I expect it to be a toolchain issue. Andi is often running with gcc versions
| that are very new (fresh from svn maybe). I dunno about binutils.
| To reproduce I would expect that a very recent gcc/binutils is needed.
| Andi?
| 
| 	Sam
|

Probably, I've used:
	gcc (GCC) 4.1.2 (Gentoo 4.1.2 p1.0.2)
	sys-devel/binutils 2.18-r1

		- Cyrill -
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