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net_sched: add rtnl assertion to tcf_exts_destroy() 

After previous patches, it is now safe to claim that
tcf_exts_destroy() is always called with RTNL lock.

Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Jiri Pirko <jiri@resnulli.us>
Cc: John Fastabend <john.fastabend@gmail.com>
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>
This commit is contained in:
Cong Wang 2017-10-26 18:24:40 -07:00 committed by David S. Miller
parent 27ce4f05e2
commit 2d132eba1d
1 changed files with 1 additions and 0 deletions
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1
net/sched/cls_api.c
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@ -909,6 +909,7 @@ void tcf_exts_destroy(struct tcf_exts *exts)
#ifdef CONFIG_NET_CLS_ACT
LIST_HEAD(actions);
ASSERT_RTNL();
tcf_exts_to_list(exts, &actions);
tcf_action_destroy(&actions, TCA_ACT_UNBIND);
kfree(exts->actions);