netdev - Re: IP_PKTINFO broken by acf568ee859f0 (xfrm: Reinject transport-mode packets through tasklet)

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Message-ID: <20180501075106.vx4va4tejjbmsjkj@gauss3.secunet.de>
Date:   Tue, 1 May 2018 09:51:06 +0200
From:   Steffen Klassert <steffen.klassert@...unet.com>
To:     Maxime Bizon <mbizon@...ebox.fr>
CC:     Herbert Xu <herbert@...dor.apana.org.au>,
        netdev <netdev@...r.kernel.org>
Subject: Re: IP_PKTINFO broken by acf568ee859f0 (xfrm: Reinject
 transport-mode packets through tasklet)

On Fri, Apr 27, 2018 at 11:16:53PM +0200, Maxime Bizon wrote:
> 
> Hello Herbert,
> 
> That patch just went into stable 4.14 and is causing a regression on my
> setup.
> 
> Basically, IP_PKTINFO does not work anymore on transport-mode packets,
> because skb->cb is now used to store the finish callback.
> 
> Was that expected or is it an unforeseen side effect ?

This should be fixed by:

commit 9a3fb9fb84cc ("xfrm: Fix transport mode skb control buffer usage.")