From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH net] ipv6: Fix traffic triggered IPsec connections.
Date: Mon, 09 Oct 2017 09:41:00 -0700 (PDT)
Message-ID: <20171009.094100.2282782707149245126.davem@davemloft.net>
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Cc: tobias@strongswan.org, weiwan@google.com, netdev@vger.kernel.org
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From: Steffen Klassert <steffen.klassert@secunet.com>
Date: Mon, 9 Oct 2017 08:39:43 +0200

> A recent patch removed the dst_free() on the allocated
> dst_entry in ipv6_blackhole_route(). The dst_free() marked
> the dst_entry as dead and added it to the gc list. I.e. it
> was setup for a one time usage. As a result we may now have
> a blackhole route cached at a socket on some IPsec scenarios.
> This makes the connection unusable.
> 
> Fix this by marking the dst_entry directly at allocation time
> as 'dead', so it is used only once.
> 
> Fixes: 587fea741134 ("ipv6: mark DST_NOGC and remove the operation of dst_free()")
> Reported-by: Tobias Brunner <tobias@strongswan.org>
> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

Applied and queued up for -stable, thanks.