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-rw-r--r--net/netlink/af_netlink.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index d1fd9f7c867e..0563b4d34eae 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1822,6 +1822,11 @@ static int netlink_sendmsg(struct socket *sock, struct msghdr *msg, size_t len)
if (msg->msg_flags&MSG_OOB)
return -EOPNOTSUPP;
+ if (len == 0) {
+ pr_warn_once("Zero length message leads to an empty skb\n");
+ return -ENODATA;
+ }
+
err = scm_send(sock, msg, &scm, true);
if (err < 0)
return err;