netdev - Re: [Bugme-new] [Bug 27212] New: Warning kmemcheck: Caught 64-bit read from uninitialized memory in netlink_broadcast

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Message-ID: <alpine.DEB.2.00.1102151403170.10742@chino.kir.corp.google.com>
Date:	Tue, 15 Feb 2011 14:21:11 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Pekka Enberg <penberg@...nel.org>
cc:	Eric Dumazet <eric.dumazet@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	netdev@...r.kernel.org, bugzilla-daemon@...zilla.kernel.org,
	bugme-daemon@...zilla.kernel.org, casteyde.christian@...e.fr,
	Changli Gao <xiaosuo@...il.com>,
	Vegard Nossum <vegardno@....uio.no>,
	David Miller <davem@...emloft.net>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Christoph Lameter <cl@...ux.com>
Subject: Re: [Bugme-new] [Bug 27212] New: Warning kmemcheck: Caught 64-bit
 read from uninitialized memory in netlink_broadcast_filtered

On Tue, 15 Feb 2011, Pekka Enberg wrote:

> > [PATCH] slub: fix kmemcheck calls to match ksize() hints
> >
> > Recent use of ksize() in network stack (commit ca44ac38 : net: don't
> > reallocate skb->head unless the current one hasn't the needed extra size
> > or is shared) triggers kmemcheck warnings, because ksize() can return
> > more space than kmemcheck is aware of.
> >
> > Pekka Enberg noticed SLAB+kmemcheck is doing the right thing, while SLUB
> > +kmemcheck doesnt.
> >
> > Bugzilla reference #27212
> >
> > Reported-by: Christian Casteyde <casteyde.christian@...e.fr>
> > Suggested-by: Pekka Enberg <penberg@...nel.org>
> > Signed-off-by: Eric Dumazet <eric.dumazet@...il.com>
> > CC: David Miller <davem@...emloft.net>
> > CC: Changli Gao <xiaosuo@...il.com>
> > CC: Andrew Morton <akpm@...ux-foundation.org>

Acked-by: David Rientjes <rientjes@...gle.com>
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