From: Ian Kumlien
Date: Mon, 2 Jan 2017 09:18:35 +0100
> __skb_flow_dissect can be called with a skb or a data packet, either
> can be NULL. All calls seems to have been moved to __skb_header_pointer
> except the pptp handling which is still calling skb_header_pointer.
...
> Fixes: ab10dccb1160
__skb_flow_dissect can be called with a skb or a data packet, either
can be NULL. All calls seems to have been moved to __skb_header_pointer
except the pptp handling which is still calling skb_header_pointer.
skb_header_pointer will use skb->data and thus:
[ 109.556866] BUG: unable to handle kern
