From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH] net: smsc911x: Fix unload crash when link is up
Date: Wed, 07 Mar 2018 13:23:13 -0500 (EST)
Message-ID: <20180307.132313.862901353807914148.davem@davemloft.net>
References: <20180306150006.31512-1-jeremy.linton@arm.com>
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Cc: netdev@vger.kernel.org, steve.glendinning@shawell.net,
        matt.sealey@arm.com, linux-kernel@vger.kernel.org
To: jeremy.linton@arm.com
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From: Jeremy Linton <jeremy.linton@arm.com>
Date: Tue,  6 Mar 2018 09:00:06 -0600

> The smsc911x driver will crash if it is rmmod'ed while the netdev
> is up like:
> 
> Call trace:
 ...
> This is caused by the mdiobus being unregistered/free'd
> and the code in phy_detach() attempting to manipulate mdio
> related structures from unregister_netdev() calling close()
> 
> To fix this, we delay the mdiobus teardown until after
> the netdev is deregistered.
> 
> Reported-by: Matt Sealey <matt.sealey@arm.com>
> Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>

Applied, thanks.