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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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17
net/sched/cls_rsvp.h
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@@ -487,10 +487,12 @@ static int rsvp_change(struct net *net, struct sk_buff *in_skb,
if (err < 0)
return err;
tcf_exts_init(&e, TCA_RSVP_ACT, TCA_RSVP_POLICE);
err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e, ovr);
err = tcf_exts_init(&e, TCA_RSVP_ACT, TCA_RSVP_POLICE);
if (err < 0)
return err;
err = tcf_exts_validate(net, tp, tb, tca[TCA_RATE], &e, ovr);
if (err < 0)
goto errout2;
f = (struct rsvp_filter *)*arg;
if (f) {
@@ -506,7 +508,11 @@ static int rsvp_change(struct net *net, struct sk_buff *in_skb,
goto errout2;
}
tcf_exts_init(&n->exts, TCA_RSVP_ACT, TCA_RSVP_POLICE);
err = tcf_exts_init(&n->exts, TCA_RSVP_ACT, TCA_RSVP_POLICE);
if (err < 0) {
kfree(n);
goto errout2;
}
if (tb[TCA_RSVP_CLASSID]) {
n->res.classid = nla_get_u32(tb[TCA_RSVP_CLASSID]);
@@ -530,7 +536,9 @@ static int rsvp_change(struct net *net, struct sk_buff *in_skb,
if (f == NULL)
goto errout2;
tcf_exts_init(&f->exts, TCA_RSVP_ACT, TCA_RSVP_POLICE);
err = tcf_exts_init(&f->exts, TCA_RSVP_ACT, TCA_RSVP_POLICE);
if (err < 0)
goto errout;
h2 = 16;
if (tb[TCA_RSVP_SRC]) {
memcpy(f->src, nla_data(tb[TCA_RSVP_SRC]), sizeof(f->src));
@@ -627,6 +635,7 @@ insert:
goto insert;
errout:
tcf_exts_destroy(&f->exts);
kfree(f);
errout2:
tcf_exts_destroy(&e);