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-rw-r--r--net/core/rtnetlink.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index c894c4af8981..2715f8d21517 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -3857,7 +3857,6 @@ static int valid_fdb_dump_legacy(const struct nlmsghdr *nlh,
int *br_idx, int *brport_idx,
struct netlink_ext_ack *extack)
{
- struct ifinfomsg *ifm = nlmsg_data(nlh);
struct nlattr *tb[IFLA_MAX+1];
int err;
@@ -3871,6 +3870,8 @@ static int valid_fdb_dump_legacy(const struct nlmsghdr *nlh,
if (nlmsg_len(nlh) != sizeof(struct ndmsg) &&
(nlmsg_len(nlh) != sizeof(struct ndmsg) +
nla_attr_size(sizeof(u32)))) {
+ struct ifinfomsg *ifm;
+
err = nlmsg_parse(nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX,
ifla_policy, extack);
if (err < 0) {
@@ -3880,6 +3881,7 @@ static int valid_fdb_dump_legacy(const struct nlmsghdr *nlh,
*br_idx = nla_get_u32(tb[IFLA_MASTER]);
}
+ ifm = nlmsg_data(nlh);
*brport_idx = ifm->ifi_index;
}
return 0;