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Date:   Tue, 10 Jan 2017 20:19:58 -0500 (EST)
From:   David Miller <>
Subject: Re: [PATCH net] net: dsa: Ensure validity of dst->ds[0]

From: Florian Fainelli <>
Date: Mon,  9 Jan 2017 11:58:34 -0800

> It is perfectly possible to have non zero indexed switches being present
> in a DSA switch tree, in such a case, we will be deferencing a NULL
> pointer while dsa_cpu_port_ethtool_{setup,restore}. Be more defensive
> and ensure that dst->ds[0] is valid before doing anything with it.
> Fixes: 0c73c523cf73 ("net: dsa: Initialize CPU port ethtool ops per tree")
> Signed-off-by: Florian Fainelli <>

Applied and queued up for -stable, thanks.

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