linux-kernel - Re: [tip:x86/build] x86, vdso: Error out if the vdso contains external references

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Message-ID: <20100619072745.GA18946@basil.fritz.box>
Date:	Sat, 19 Jun 2010 09:27:45 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	mingo@...hat.com, hpa@...or.com, linux-kernel@...r.kernel.org,
	andi@...stfloor.org, tglx@...utronix.de, hpa@...ux.intel.com
Cc:	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:x86/build] x86, vdso: Error out if the vdso contains
 external references

> diff --git a/arch/x86/vdso/checkundef.sh b/arch/x86/vdso/checkundef.sh
> new file mode 100755
> index 0000000..490be1c
> --- /dev/null
> +++ b/arch/x86/vdso/checkundef.sh
> @@ -0,0 +1,10 @@
> +#!/bin/sh
> +nm="$1"
> +file="$2"
> +"$nm" "$file" | grep '^ *U' > /dev/null 2>&1

Does that really handle the failed inline, static function case? 

In this case you get a function which is not 'U', but it's 
just in the wrong section. I think that would need to be checked too.

-Andi
-- 
ak@...ux.intel.com -- Speaking for myself only.
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