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Date:   Mon, 20 Jan 2020 09:17:35 +0000
From:   "Hans-Christian Egtvedt (hegtvedt)" <>
To:     "" <>
CC:     "" <>,
        Eric Dumazet <>,
        Greg Kroah-Hartman <>
Subject: Regression in macvlan driver in stable release 4.4.209


I am seeing a regression in the macvlan kernel driver after Linux stable 
release 4.4.209, bisecting identifies commit

There seems to be a history behind this, and I do not have the full 
overview of the intention behind the change.

What I see on my target, Aarch64 CPU, is that this patch moves the eth 
pointer in macvlan_broadcast() function some bytes. This will cause 
everything within the ethhdr struct to be wrong AFAICT.

An example:
Original code "eth = eth_hdr(skb)"
    eth = ffffffc007a1b002
New code "eth = skb_eth_hdr(skb)"
    eth = ffffffc007a1b010

Let me know if I can assist in any way.

Best regards,
Hans-Christian Noren Egtvedt

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