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List:       linux-bridge
Subject:    Re: [Bridge] [PATCH] bridge: Fix potential deadlock on
From:       David Miller <davem () davemloft ! net>
Date:       2011-11-14 5:39:19
Message-ID: 20111114.003919.1393266325552023244.davem () davemloft ! net
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From: Andrew Vagin <avagin@openvz.org>
Date: Thu, 10 Nov 2011 18:48:03 +0300

> multicast_lock is taken in softirq context, so we should use
> spin_lock_bh() in userspace.
> 
> call-chain in softirq context:
> run_timer_softirq()
> 	br_multicast_query_expired()
> 
> call-chain in userspace:
> sysfs_write_file()
> 	store_multicast_snooping()
> 		br_multicast_toggle()
> 
> Signed-off-by: Andrew Vagin <avagin@openvz.org>

Applied, thanks.
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