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

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Date:   Fri, 27 Apr 2018 23:16:53 +0200
From:   Maxime Bizon <mbizon@...ebox.fr>
To:     Herbert Xu <herbert@...dor.apana.org.au>
Cc:     netdev <netdev@...r.kernel.org>
Subject: IP_PKTINFO broken by acf568ee859f0 (xfrm: Reinject transport-mode
 packets through tasklet)

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 ?

Thanks,

-- 
Maxime