netdev - Re: [PATCH net] mpls: fix possible use after free of device

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Message-Id: <20150607.193743.1723043986420490845.davem@davemloft.net>
Date:	Sun, 07 Jun 2015 19:37:43 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	rshearma@...cade.com
Cc:	netdev@...r.kernel.org, ebiederm@...ssion.com,
	roopa@...ulusnetworks.com
Subject: Re: [PATCH net] mpls: fix possible use after free of device

From: Robert Shearman <rshearma@...cade.com>
Date: Fri, 5 Jun 2015 18:54:45 +0100

> The mpls device is used in an RCU read context without a lock being
> held. As the memory is freed without waiting for the RCU grace period
> to elapse, the freed memory could still be in use.
> 
> Address this by using kfree_rcu to free the memory for the mpls device
> after the RCU grace period has elapsed.
> 
> Fixes: 03c57747a702 ("mpls: Per-device MPLS state")
> Signed-off-by: Robert Shearman <rshearma@...cade.com>

Applied, thanks.
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