linux-kernel - Re: [patch] time: cast ->raw_interval to u64 to avoid shift overflow

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Message-ID: <5074777B.9070907@us.ibm.com>
Date:	Tue, 09 Oct 2012 12:14:03 -0700
From:	John Stultz <johnstul@...ibm.com>
To:	Dan Carpenter <dan.carpenter@...cle.com>
CC:	Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: Re: [patch] time: cast ->raw_interval to u64 to avoid shift overflow

On 10/09/2012 12:18 AM, Dan Carpenter wrote:
> We fixed a bunch of integer overflows in timekeeping code during the 3.6
> cycle.  I did an audit based on that and found this potential overflow.
>
> Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

Yep. Looks like this would trigger if you had NOZ idle for more then 4 
seconds.

Thanks for the audit, and sending this in!

Thomas: Mind queuing this?  Probably should be marked for stable too.

Acked-by: John Stultz <johnstul@...ibm.com>


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