commit 46e235c15ca44f34cb79f4dbec909b8c51999dc1
author Cong Wang <xiyou.wangcong@gmail.com> Thu Oct 26 18:24:41 2017 -0700
committer David S. Miller <davem@davemloft.net> Sun Oct 29 22:49:31 2017 +0900
tree cd968c0a4bb7b8db08d09541301f95290c13db1e
parent 2d132eba1d972ea6c0e47286e4c821b4a3c5b84d

net_sched: fix call_rcu() race on act_sample module removal

Similar to commit c78e1746d3ad
("net: sched: fix call_rcu() race on classifier module unloads"),
we need to wait for flying RCU callback tcf_sample_cleanup_rcu().

Cc: Yotam Gigi <yotamg@mellanox.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Jiri Pirko <jiri@resnulli.us>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>