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net_sched: properly handle failure case of tcf_exts_init()

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After commit 22dc13c837 ("net_sched: convert tcf_exts from list to pointer array")
we do dynamic allocation in tcf_exts_init(), therefore we need
to handle the ENOMEM case properly.

Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
WANG Cong
2016-08-19 12:36:54 -07:00
committed by David S. Miller
parent c1346a7e70
commit b9a24bb76b
11 changed files with 182 additions and 75 deletions
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12
net/sched/cls_basic.c
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@@ -138,10 +138,12 @@ static int basic_set_parms(struct net *net, struct tcf_proto *tp,
struct tcf_exts e;
struct tcf_ematch_tree t;
tcf_exts_init(&e, TCA_BASIC_ACT, TCA_BASIC_POLICE);
err = tcf_exts_validate(net, tp, tb, est, &e, ovr);
err = tcf_exts_init(&e, TCA_BASIC_ACT, TCA_BASIC_POLICE);
if (err < 0)
return err;
err = tcf_exts_validate(net, tp, tb, est, &e, ovr);
if (err < 0)
goto errout;
err = tcf_em_tree_validate(tp, tb[TCA_BASIC_EMATCHES], &t);
if (err < 0)
@@ -189,7 +191,10 @@ static int basic_change(struct net *net, struct sk_buff *in_skb,
if (!fnew)
return -ENOBUFS;
tcf_exts_init(&fnew->exts, TCA_BASIC_ACT, TCA_BASIC_POLICE);
err = tcf_exts_init(&fnew->exts, TCA_BASIC_ACT, TCA_BASIC_POLICE);
if (err < 0)
goto errout;
err = -EINVAL;
if (handle) {
fnew->handle = handle;
@@ -226,6 +231,7 @@ static int basic_change(struct net *net, struct sk_buff *in_skb,
return 0;
errout:
tcf_exts_destroy(&fnew->exts);
kfree(fnew);
return err;
}