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 05:34:24PM -0700, Josh Triplett wrote:
> 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?

I was asked to backport it because some people have seen this happen in
the past.

thanks,

greg k-h
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