From: Cong Wang xiyou.wangcong@gmail.com
[ Upstream commit 1aad8049909a6d3379175ef2824a68ac35c0b564 ]
All TC actions call tcf_action_check_ctrlact() to validate goto chain, so this check in tcf_action_init_1() is actually redundant. Remove it to save troubles of leaking memory.
Fixes: e49d8c22f126 ("net_sched: defer tcf_idr_insert() in tcf_action_init_1()") Reported-by: Vlad Buslov vladbu@mellanox.com Suggested-by: Davide Caratti dcaratti@redhat.com Cc: Jamal Hadi Salim jhs@mojatatu.com Cc: Jiri Pirko jiri@resnulli.us Signed-off-by: Cong Wang xiyou.wangcong@gmail.com Reviewed-by: Davide Caratti dcaratti@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/sched/act_api.c | 14 -------------- 1 file changed, 14 deletions(-)
--- a/net/sched/act_api.c +++ b/net/sched/act_api.c @@ -706,13 +706,6 @@ int tcf_action_destroy(struct tc_action return ret; }
-static int tcf_action_destroy_1(struct tc_action *a, int bind) -{ - struct tc_action *actions[] = { a, NULL }; - - return tcf_action_destroy(actions, bind); -} - static int tcf_action_put(struct tc_action *p) { return __tcf_action_put(p, false); @@ -932,13 +925,6 @@ struct tc_action *tcf_action_init_1(stru if (err < 0) goto err_mod;
- if (TC_ACT_EXT_CMP(a->tcfa_action, TC_ACT_GOTO_CHAIN) && - !rcu_access_pointer(a->goto_chain)) { - tcf_action_destroy_1(a, bind); - NL_SET_ERR_MSG(extack, "can't use goto chain with NULL chain"); - return ERR_PTR(-EINVAL); - } - if (!name && tb[TCA_ACT_COOKIE]) tcf_set_action_cookie(&a->act_cookie, cookie);