linux-kernel - Re: 2.6.23-rc1: i386 section mismatch warnings

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Message-ID: <20070724123029.GA15462@uranus.ravnborg.org>
Date:	Tue, 24 Jul 2007 14:30:29 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Gabriel C <nix.or.die@...glemail.com>
Cc:	Al Viro <viro@....linux.org.uk>, Jeff Garzik <jeff@...zik.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.23-rc1: i386 section mismatch warnings

On Tue, Jul 24, 2007 at 10:08:47AM +0200, Sam Ravnborg wrote:
> On Tue, Jul 24, 2007 at 09:48:48AM +0200, Gabriel C wrote:
> > Al Viro wrote:
> > > On Mon, Jul 23, 2007 at 09:18:38PM -0400, Jeff Garzik wrote:
> > >> make allmodconfig on i386:
> > >>
> > >> WARNING: vmlinux(.text+0xc0101183): Section mismatch: reference to 
> > > 
> > > Ignore.  vmlinux.o ones are interesting; so are ones in modules.
> > > vmlinux ones are either duplicates of vmlinux.o or false positives.
> > 
> > allyesconfig has a lot Section mismatch warnings , are these false positive too ?
> > 
> > 
> > http://lkml.org/lkml/2007/7/22/312
> 
> The first group are to be solved.
> The last group can be ignored.
> 
> I have saved your original mail but not yet looked into any of them.
> I assume that a few hours work can bring down the list considerably but
> I was sidetracked by a book (HP7) ;-)

Took a closer look at the warnings.
modpost gets confused on the weired section mames: .init.text.1, .init.text.3 etc.

See for example:

WARNING: vmlinux.o(.data+0x4b38): Section mismatch: reference to .init.text.3:powernow_cpu_init (between 'powernow_driver' and 'minimum
                                                                 ^^^^^^^^^^^^

This is easy to ignore but anyone that knows why we suddenly have a number following
the section name in a few cases?

	Sam
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