From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH net-next] tun: relax check on eth_get_headlen() return
 value
Date: Thu, 19 Oct 2017 13:18:48 +0100 (WEST)
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From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Tue, 17 Oct 2017 10:07:44 -0700

> From: Eric Dumazet <edumazet@google.com>
> 
> syzkaller hit the WARN() in tun_get_user(), providing skb
> with payload in fragments only, and nothing in skb->head
> 
> GRO layer is fine with this, so relax the check.
> 
> Fixes: 90e33d459407 ("tun: enable napi_gro_frags() for TUN/TAP driver")
> Signed-off-by: Eric Dumazet <edumazet@google.com>

Applied.