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| H A D | br_multicast.c | diff ef5e0d8237287db3a12d84f08fb2483d7a30a943 Wed Nov 09 23:48:03 CST 2011 Andrey Vagin <avagin@openvz.org> bridge: Fix potential deadlock on br->multicast_lock
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>
Signed-off-by: David S. Miller <davem@davemloft.net>
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