netdev - [PATCH net-next v6 1/3] net sched actions: User proper root attribute table for actions

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Date:   Fri, 21 Apr 2017 06:55:30 -0400
From:   Jamal Hadi Salim <jhs@...atatu.com>
To:     davem@...emloft.net
Cc:     jiri@...nulli.us, xiyou.wangcong@...il.com, eric.dumazet@...il.com,
        netdev@...r.kernel.org, Jamal Hadi Salim <jhs@...atatu.com>
Subject: [PATCH net-next v6 1/3] net sched actions: User proper root attribute table for actions

From: Jamal Hadi Salim <jhs@...atatu.com>

Bug fix for an issue which has been around for about a decade.
We got away with it because the enumeration was larger than needed.

Fixes commit 7ba699c604ab ("[NET_SCHED]: Convert actions from rtnetlink to new netlink API")

Thanks to Jiri Pirko for spotting it.

Signed-off-by: Jamal Hadi Salim <jhs@...atatu.com>
---
 net/sched/act_api.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 82b1d48..9ce22b7 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -997,7 +997,7 @@ static int tc_ctl_action(struct sk_buff *skb, struct nlmsghdr *n,
 			 struct netlink_ext_ack *extack)
 {
 	struct net *net = sock_net(skb->sk);
-	struct nlattr *tca[TCA_ACT_MAX + 1];
+	struct nlattr *tca[TCAA_MAX + 1];
 	u32 portid = skb ? NETLINK_CB(skb).portid : 0;
 	int ret = 0, ovr = 0;
 
@@ -1005,7 +1005,7 @@ static int tc_ctl_action(struct sk_buff *skb, struct nlmsghdr *n,
 	    !netlink_capable(skb, CAP_NET_ADMIN))
 		return -EPERM;
 
-	ret = nlmsg_parse(n, sizeof(struct tcamsg), tca, TCA_ACT_MAX, NULL,
+	ret = nlmsg_parse(n, sizeof(struct tcamsg), tca, TCAA_MAX, NULL,
 			  extack);
 	if (ret < 0)
 		return ret;
-- 
1.9.1