linux-kernel - Re: [PATCH] fix typo/thinko in get_random

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Message-ID: <4EC537B1.1000408@zytor.com>
Date:	Thu, 17 Nov 2011 08:34:57 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Thomas Gleixner <tglx@...utronix.de>
CC:	"Luck, Tony" <tony.luck@...el.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>, Fenghua Yu <fenghua.yu@...el.com>,
	Matt Mackall <mpm@...enic.com>,
	Herbert Xu <herbert@...dor.hengli.com.au>,
	"Theodore Ts'o" <tytso@....edu>, Jeff Garzik <jgarzik@...ox.com>,
	Arjan van de Ven <arjan@...ux.intel.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] fix typo/thinko in get_random_bytes()

On 11/16/2011 11:41 AM, Thomas Gleixner wrote:
> 
> 
> On Wed, 16 Nov 2011, H. Peter Anvin wrote:
> 
>> On 11/16/2011 10:50 AM, Luck, Tony wrote:
>>> If there is an architecture-specific random number generator we use
>>> it to acquire randomness one "long" at a time. We should put these
>>> random words into consecutive words in the result buffer - not just
>>> overwrite the first word again and again.
>>>
>>> Signed-off-by: Tony Luck <tony.luck@...el.com>
>>
>> Ouch.  Good catch.  This, I guess, is the downside of doing this only on
>> the kernel paths... made this kind of errors harder to catch.
>>
>> Acked-by: H. Peter Anvin <hpa@...or.com>
> 
> Acked-by: Thomas Gleixner <tglx@...utronix.de>

Applied to x86/urgent... I'll try to get the tip-bot back online today
if I can find the time.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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