netdev - Re: [PATCH net] tg3: Fix race condition in tg3_get

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Date:   Sat, 07 Jan 2017 21:35:19 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     michael.chan@...adcom.com
Cc:     netdev@...r.kernel.org, wangyufen@...wei.com
Subject: Re: [PATCH net] tg3: Fix race condition in tg3_get_stats64().

From: Michael Chan <michael.chan@...adcom.com>
Date: Fri,  6 Jan 2017 16:18:53 -0500

> The driver's ndo_get_stats64() method is not always called under RTNL.
> So it can race with driver close or ethtool reconfigurations.  Fix the
> race condition by taking tp->lock spinlock in tg3_free_consistent()
> when freeing the tp->hw_stats memory block.  tg3_get_stats64() is
> already taking tp->lock.
> 
> Reported-by: Wang Yufen <wangyufen@...wei.com>
> Signed-off-by: Michael Chan <michael.chan@...adcom.com>

Applied, thanks Michael.