Re: [PATCH net-next] tun: relax check on eth_get_headlen() return value

[David Miller]

From: Eric Dumazet <eric.duma...@gmail.com>
Date: Tue, 17 Oct 2017 10:07:44 -0700

> From: Eric Dumazet <eduma...@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 <eduma...@google.com>

Applied.