linux-kernel - Re: [PATCH x86 for review III] [12/29] x86_64: 32-bit ptrace mangles sixth system call argument

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Message-Id: <200702122326.23406.andi@firstfloor.org>
Date:	Mon, 12 Feb 2007 23:26:23 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Chuck Ebbert <cebbert@...hat.com>
Cc:	Jeff Dike <jdike@...toit.com>, patches@...-64.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH x86 for review III] [12/29] x86_64: 32-bit ptrace mangles sixth system call argument


> Didn't we have problems with this exact approach before? This one was dropped
> because it caused 32-bit programs to crash:
> http://www2.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.13/2.6.13-mm2/broken-out/x86-64-ptrace-ia32-bp-fix.patch
> 
> See:
> 	http://lkml.org/lkml/2005/09/16/261
> 
> for the one I proposed instead.

Yes you're right. I dropped it for now.

-Andi
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