netdev - Re: [PATCH net] macvlan: Fix the bug when destroy macvlan dev port

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Date:	Thu, 14 Aug 2014 09:58:21 -0700
From:	Cong Wang <cwang@...pensource.com>
To:	Ding Tianhong <dingtianhong@...wei.com>
Cc:	"Keller, Jacob E" <jacob.e.keller@...el.com>,
	"David S. Miller" <davem@...emloft.net>,
	Patrick McHardy <kaber@...sh.net>,
	Netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH net] macvlan: Fix the bug when destroy macvlan dev port

On Thu, Aug 14, 2014 at 2:12 AM, Ding Tianhong <dingtianhong@...wei.com> wrote:
>
> To fix this problem, we need to check whether the port is exist when calling
> macvlan_port_destroy(), do nothing if the port has been destroyed yet.
>

As I said, this will make the first call of macvlan_port_destroy()
free the port,
which was freed by the last one before.

Why not just revert your change? It doesn't give any benefit.
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