From b9a24bb76bf611a5268ceffe04219e6ad264559b Mon Sep 17 00:00:00 2001 From: WANG Cong Date: Fri, 19 Aug 2016 12:36:54 -0700 Subject: net_sched: properly handle failure case of tcf_exts_init() After commit 22dc13c837c3 ("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 Signed-off-by: Cong Wang Acked-by: Jamal Hadi Salim Acked-by: Jamal Hadi Salim Signed-off-by: David S. Miller --- net/sched/cls_rsvp.h | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) (limited to 'net/sched/cls_rsvp.h') diff --git a/net/sched/cls_rsvp.h b/net/sched/cls_rsvp.h index f9c9fc075fe6..4f05a19fb073 100644 --- a/net/sched/cls_rsvp.h +++ b/net/sched/cls_rsvp.h @@ -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); -- cgit v1.2.3-59-g8ed1b