From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH net] packet: reset network header if packet shorter
 than ll reserved space
Date: Thu, 12 Jul 2018 16:57:16 -0700 (PDT)
Message-ID: <20180712.165716.1550134204399452005.davem@davemloft.net>
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From: Willem de Bruijn <willemdebruijn.kernel@gmail.com>
Date: Wed, 11 Jul 2018 12:00:45 -0400

> From: Willem de Bruijn <willemb@google.com>
> 
> If variable length link layer headers result in a packet shorter
> than dev->hard_header_len, reset the network header offset. Else
> skb->mac_len may exceed skb->len after skb_mac_reset_len.
> 
> packet_sendmsg_spkt already has similar logic.
> 
> Fixes: b84bbaf7a6c8 ("packet: in packet_snd start writing at link layer allocation")
> Signed-off-by: Willem de Bruijn <willemb@google.com>

Applied and queued up for -stable.