linux-kernel - Re: [ 011/120] lib/gcd.c: prevent possible div by 0

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Date:	Fri, 12 Oct 2012 22:11:24 +0100
From:	Ben Hutchings <ben@...adent.org.uk>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	alan@...rguk.ukuu.org.uk, Davidlohr Bueso <dave@....org>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [ 011/120] lib/gcd.c: prevent possible div by 0

On Thu, 2012-10-11 at 09:59 +0900, Greg Kroah-Hartman wrote:
> 3.4-stable review patch.  If anyone has any objections, please let me know.
> 
> ------------------
> 
> From: Davidlohr Bueso <dave@....org>
> 
> commit e96875677fb2b7cb739c5d7769824dff7260d31d upstream.
> 
> Account for all properties when a and/or b are 0:
> gcd(0, 0) = 0
> gcd(a, 0) = a
> gcd(0, b) = b
> 
> Fixes no known problems in current kernels.
[...]

I can't believe this change is harmful, but unless there are some known
problems this doesn't meet the criteria for a stable update.

Ben.

-- 
Ben Hutchings
Kids!  Bringing about Armageddon can be dangerous.  Do not attempt it in
your own home. - Terry Pratchett and Neil Gaiman, `Good Omens'

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