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| author |   Roopa Prabhu <roopa@cumulusnetworks.com> | 2017-07-07 11:21:49 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-07-08 11:26:41 +0100 |
| commit | a906c1aa43fa9f3785240fda03269d4283635df2 (patch) | |
| tree | 3e5eac4532b62821d30f44674f4c14e3735f6aa0 /net/mpls/af_mpls.c | |
| parent | doc: SKB_GSO_[IPIP|SIT] have been replaced (diff) | |
| download | linux-dev-a906c1aa43fa9f3785240fda03269d4283635df2.tar.xz linux-dev-a906c1aa43fa9f3785240fda03269d4283635df2.zip | |
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: 397fc9e5cefe ("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>
Diffstat (limited to 'net/mpls/af_mpls.c')
| -rw-r--r-- | net/mpls/af_mpls.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/net/mpls/af_mpls.c b/net/mpls/af_mpls.c index bdcfb2d04cd2..ea4f481839dd 100644 --- a/net/mpls/af_mpls.c +++ b/net/mpls/af_mpls.c @@ -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); |