From: Petr Machata <petrm@xxxxxxxxxxxx> Date: Fri, 08 Jun 2018 15:11:47 +0200 > Callers of br_fdb_find() need to hold the hash lock, which > br_fdb_find_port() doesn't do. However, since br_fdb_find_port() is not > doing any actual FDB manipulation, the hash lock is not really needed at > all. So convert to br_fdb_find_rcu(), surrounded by rcu_read_lock() / > _unlock() pair. > > The device pointer copied from inside the FDB entry is then kept alive > by the RTNL lock, which br_fdb_find_port() asserts. > > Fixes: 4d4fd36126d6 ("net: bridge: Publish bridge accessor functions") > Signed-off-by: Petr Machata <petrm@xxxxxxxxxxxx> Applied, thank you.