linux-kernel - Re: [PATCH] ipv6:Fix concurrent access issue in the function inet6_rtm

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Message-ID: <CAHA+R7OvAjc0VKXR9w7TiRkqs-bU8AMKpoUONsBMWKSvVdEc0Q@mail.gmail.com>
Date:	Tue, 4 Aug 2015 20:54:59 -0700
From:	Cong Wang <cwang@...pensource.com>
To:	Nicholas Krause <uboot477@...il.com>
Cc:	David Miller <davem@...emloft.net>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	James Morris <jmorris@...ei.org>,
	Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
	Patrick McHardy <kaber@...sh.net>,
	netdev <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Nicholas Krause <xerofoify@...il.com>
Subject: Re: [PATCH] ipv6:Fix concurrent access issue in the function inet6_rtm_deladdr

On Tue, Aug 4, 2015 at 7:39 PM, Nicholas Krause <uboot477@...il.com> wrote:
> From: Nicholas Krause <xerofoify@...il.com>
>
> This fixes the issue with conncurrent access when calling the function
> inte6_addr_del due to this function using non locked wrapper versions
> of certain functions by locking the routing mutex before and after this
> call with rtnl_lock/unlock. After the unlocking just return the error
> code as normal to signal success or failure to the caller of the function
> inet_6_rtm_addr.
>

Huh? Isn't inet6_rtm_deladdr() already called with rtnl lock?

What bug are you trying to fix?
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