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mpls: fix uninitialized in_label var warning in mpls_getroute 

Fix the below warning generated by static checker:
    net/mpls/af_mpls.c:2111 mpls_getroute()
    error: uninitialized symbol 'in_label'."

Fixes: 397fc9e5ce ("mpls: route get support")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Roopa Prabhu 2017-07-07 11:21:49 -07:00 committed by David S. Miller
parent 11bafd5477
commit a906c1aa43
1 changed files with 8 additions and 4 deletions
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12
net/mpls/af_mpls.c
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@ -2076,6 +2076,7 @@ static int mpls_getroute(struct sk_buff *in_skb, struct nlmsghdr *in_nlh,
{
struct net *net = sock_net(in_skb->sk);
u32 portid = NETLINK_CB(in_skb).portid;
u32 in_label = LABEL_NOT_SPECIFIED;
struct nlattr *tb[RTA_MAX + 1];
u32 labels[MAX_NEW_LABELS];
struct mpls_shim_hdr *hdr;
@ -2086,9 +2087,8 @@ static int mpls_getroute(struct sk_buff *in_skb, struct nlmsghdr *in_nlh,
struct nlmsghdr *nlh;
struct sk_buff *skb;
struct mpls_nh *nh;
int err = -EINVAL;
u32 in_label;
u8 n_labels;
int err;
err = nlmsg_parse(in_nlh, sizeof(*rtm), tb, RTA_MAX,
rtm_mpls_policy, extack);
@ -2101,11 +2101,15 @@ static int mpls_getroute(struct sk_buff *in_skb, struct nlmsghdr *in_nlh,
u8 label_count;
if (nla_get_labels(tb[RTA_DST], 1, &label_count,
&in_label, extack))
&in_label, extack)) {
err = -EINVAL;
goto errout;
}
if (in_label < MPLS_LABEL_FIRST_UNRESERVED)
if (!mpls_label_ok(net, in_label, extack)) {
err = -EINVAL;
goto errout;
}
}
rt = mpls_route_input_rcu(net, in_label);