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| author | Cong Wang <xiyou.wangcong@gmail.com> | 2017-10-27 03:24:41 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-10-29 14:49:31 +0100 |
| commit | 46e235c15ca44f34cb79f4dbec909b8c51999dc1 (patch) | |
| tree | cd968c0a4bb7b8db08d09541301f95290c13db1e /net | |
| parent | net_sched: add rtnl assertion to tcf_exts_destroy() (diff) | |
| download | linux-46e235c15ca44f34cb79f4dbec909b8c51999dc1.tar.xz linux-46e235c15ca44f34cb79f4dbec909b8c51999dc1.zip | |
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>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sched/act_sample.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/sched/act_sample.c b/net/sched/act_sample.c index ec986ae52808..a9f9a2ccc664 100644 --- a/net/sched/act_sample.c +++ b/net/sched/act_sample.c @@ -264,6 +264,7 @@ static int __init sample_init_module(void) static void __exit sample_cleanup_module(void) { + rcu_barrier(); tcf_unregister_action(&act_sample_ops, &sample_net_ops); } |