linux-kernel - Re: [PATCH 2/2] x86: ia32_signal: remove unnecessary padding

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Message-ID: <491B0E6F.2010301@zytor.com>
Date:	Wed, 12 Nov 2008 09:12:15 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Mikael Pettersson <mikpe@...uu.se>
CC:	Ingo Molnar <mingo@...e.hu>,
	Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] x86: ia32_signal: remove unnecessary padding

Mikael Pettersson wrote:
> It does cause each signal delivery to leak 2 uninitialised
> kernel bytes to the end of retcode[], which seems unnecessary.

Not just unnecessary, it is a huge no-no for security.

NAK on this.

	-hpa
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