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ac4c886883
br_fdb_change_mac_address() calls fdb_insert()/fdb_delete() without br->hash_lock. These hash list updates are racy with br_fdb_update()/br_fdb_cleanup(). Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp> Acked-by: Vlad Yasevich <vyasevic@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>