Re: Patch "jiffies: Avoid undefined behavior from signed overflow" has been added to the 3.10-stable tree

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On Thu, Mar 20, 2014 at 05:04:48PM -0700, gregkh@xxxxxxxxxxxxxxxxxxx wrote:
> 
> This is a note to let you know that I've just added the patch titled
> 
>     jiffies: Avoid undefined behavior from signed overflow
> 
> to the 3.10-stable tree which can be found at:
>     http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
> 
> The filename of the patch is:
>      jiffies-avoid-undefined-behavior-from-signed-overflow.patch
> and it can be found in the queue-3.10 subdirectory.
> 
> If you, or anyone else, feels it should not be added to the stable tree,
> please let <stable@xxxxxxxxxxxxxxx> know about it.

Does this actually, in practice, result in miscompilation of this
calculation in the kernel with some compiler or configuration?  If so,
this makes sense, but if not, what motivates putting this in stable?

- Josh Triplett
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