linux-kernel - Re: [PATCH] Fix guest memory leak and panic

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Message-ID: <1318935055.3385.0.camel@zakaz.uk.xensource.com>
Date:	Tue, 18 Oct 2011 11:50:55 +0100
From:	Ian Campbell <Ian.Campbell@...rix.com>
To:	Krishna Kumar2 <krkumar2@...ibm.com>
CC:	"davem@...emloft.net" <davem@...emloft.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"mst@...hat.com" <mst@...hat.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"rusty@...tcorp.com.au" <rusty@...tcorp.com.au>,
	"virtualization@...ts.linux-foundation.org" 
	<virtualization@...ts.linux-foundation.org>
Subject: Re: [PATCH] Fix guest memory leak and panic

On Tue, 2011-10-18 at 11:46 +0100, Krishna Kumar2 wrote:
> Ian Campbell <Ian.Campbell@...rix.com> wrote on 10/18/2011 03:17:11 PM:
> 
> > > I think the best thing might be to remove the additional ref taking
> from
> > > the setter function and audit the previous changes to ensure they
> > > conform. I'll do that right away and post a fixup patch ASAP.
> >
> > Sigh, only one out of the ten callers of (__)skb_frag_set_page expects
> > skb_frag_set_page to take a new reference. I think that's pretty
> > comprehensive evidence that the current behaviour is unexpected and
> > wrong.
> 
> Looks good!

Thanks.

> Does it make sense to commit both of these patches? The
> reason being - my patch becomes a cleanup of set_skb_frag()
> in virtio_net driver.

I think your patch remains a valid cleanup but I don't maintain that
code.

Ian.


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