netdev - Re: ipcomp regression in 2.6.24

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Date:	Tue, 29 Jan 2008 21:12:27 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	herbert@...dor.apana.org.au
Cc:	pupilla@...mail.com, Daniel.Beschorner@...ton.com,
	netdev@...r.kernel.org
Subject: Re: ipcomp regression in 2.6.24

From: Herbert Xu <herbert@...dor.apana.org.au>
Date: Wed, 30 Jan 2008 14:15:33 +1100

> Marco Berizzi <pupilla@...mail.com> wrote:
> >
> >> > With 2.6.24 IPSEC/ESP tunnels to older kernels establish fine, data
> >> > flows in both directions, but no data comes out of the tunnel.
> >> > Needed to disable ipcomp.
> > 
> > Same problem here: linux 2.6.24 driven by openswan 2.4.11
> > on Slackware 11.0
> 
> My bad.  This patch should fix it.
> 
> [IPCOMP]: Fetch nexthdr before ipch is destroyed
> 
> When I moved the nexthdr setting out of IPComp I accidently moved
> the reading of ipch->nexthdr after the decompression.  Unfortunately
> this means that we'd be reading from a stale ipch pointer which
> doesn't work very well.
> 
> This patch moves the reading up so that we get the correct nexthdr
> value.
> 
> Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>

Applied, and queued for -stable, thanks!
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