From: Eric Dumazet <eric.duma...@gmail.com>
Date: Fri, 30 Oct 2015 09:46:12 -0700
> From: Eric Dumazet <eduma...@google.com>
>
> IPv6 request sockets store a pointer to skb containing the SYN packet
> to be able to transfer it to full blown socket when 3WHS is done
> (ireq->pktopts -> np->pktoptions)
>
> As explained in commit 5e0724d027f0 ("tcp/dccp: fix hashdance race for
> passive sessions"), we must transfer the skb only if we won the
> hashdance race, if multiple cpus receive the 'ack' packet completing
> 3WHS at the same time.
>
> Fixes: e994b2f0fb92 ("tcp: do not lock listener to process SYN packets")
> Fixes: 079096f103fa ("tcp/dccp: install syn_recv requests into ehash table")
> Signed-off-by: Eric Dumazet <eduma...@google.com>
Applied.
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