linux-kernel - Re: [34/44] Limit sysctl_tcp_mem and sysctl_udp_mem initializers to prevent integer overflows.

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Message-ID: <1291787445.5324.64.camel@edumazet-laptop>
Date:	Wed, 08 Dec 2010 06:50:45 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Greg KH <gregkh@...e.de>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, stable@...nel.org,
	"David S. Miller" <davem@...emloft.net>, stable-review@...nel.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Robin Holt <holt@....com>, Willy Tarreau <w@....eu>,
	netdev@...r.kernel.org, linux-sctp@...r.kernel.org,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	"Pekka Savola (ipv6)" <pekkas@...core.fi>,
	James Morris <jmorris@...ei.org>,
	Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
	Patrick McHardy <kaber@...sh.net>,
	Vlad Yasevich <vladislav.yasevich@...com>,
	Sridhar Samudrala <sri@...ibm.com>
Subject: Re: [34/44] Limit sysctl_tcp_mem and sysctl_udp_mem initializers
 to prevent integer overflows.

Le mardi 07 décembre 2010 à 20:16 -0800, Greg KH a écrit :
> On Tue, Dec 07, 2010 at 05:22:34PM -0800, Linus Torvalds wrote:
> > On Tue, Dec 7, 2010 at 4:04 PM, Greg KH <gregkh@...e.de> wrote:
> > >
> > > From: Robin Holt <holt@....com>
> > >
> > > [ Problem was fixed differently upstream. -DaveM ]
> > 
> > Gaah. I'd really like to see more of a description for things like
> > this. A commit ID for the alternate fix, or at least a few words about
> > the different fix or reason why upstream doesn't need the stable
> > commit.
> 
> I'll let David confirm this, he's the one who sent it to me :)

upstream uses commit 8d987e5c7510 (net: avoid limits overflow)

This commit is a bit more untrusive for stable kernels :

It depends on :
a9febbb4bd13 (sysctl: min/max bounds are optional)
27b3d80a7b6a (sysctl: fix min/max handling in __do_proc_doulongvec_minmax())




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