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Date:	Thu, 08 Apr 2010 18:03:52 +0200
From:	Andreas Schwab <schwab@...hat.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Mike Galbraith <efault@....de>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [GIT PULL] scheduler fix

Linus Torvalds <torvalds@...ux-foundation.org> writes:

> On Thu, 8 Apr 2010, Ingo Molnar wrote:
>>  
>> -	if (len < nr_cpu_ids)
>> +	if ((len * BITS_PER_BYTE) < nr_cpu_ids)
>>  		return -EINVAL;
>
> Not that it really matters, but this will now fail for no good reason if 
> you pass it a half-gigabyte area due to overflow.

Which can easily be avoided.

	if (len < DIV_ROUND_UP(nr_cpu_ids, BITS_PER_BYTE))

Andreas.

-- 
Andreas Schwab, schwab@...hat.com
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