netdev - Re: [PATCH net-next 1/1] netvsc: fix rtnl deadlock on unregister of vf

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Message-Id: <20170806.212929.246667029504105138.davem@davemloft.net>
Date:   Sun, 06 Aug 2017 21:29:29 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     stephen@...workplumber.org
Cc:     kys@...rosoft.com, haiyangz@...rosoft.com, sthemmin@...rosoft.com,
        devel@...uxdriverproject.org, netdev@...r.kernel.org
Subject: Re: [PATCH net-next 1/1] netvsc: fix rtnl deadlock on unregister
 of vf

From: Stephen Hemminger <stephen@...workplumber.org>
Date: Fri,  4 Aug 2017 12:14:00 -0700

> With new transparent VF support, it is possible to get a deadlock
> when some of the deferred work is running and the unregister_vf
> is trying to cancel the work element. The solution is to use
> trylock and reschedule (similar to bonding and team device).
> 
> Reported-by: Vitaly Kuznetsov <vkuznets@...hat.com>
> Fixes: 0c195567a8f6 ("netvsc: transparent VF management")
> Signed-off-by: Stephen Hemminger <sthemmin@...rosoft.com>

Applied, thanks.