1 files changed, 4 insertions, 0 deletions

diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index dbeacd8b0f90..def007ec1d6f 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -836,12 +836,16 @@ static int inet_diag_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
         return inet_diag_get_exact(skb, nlh);
 }
 
+static DEFINE_MUTEX(inet_diag_mutex);
+
 static void inet_diag_rcv(struct sock *sk, int len)
 {
         unsigned int qlen = 0;
 
         do {
+                mutex_lock(&inet_diag_mutex);
                 netlink_run_queue(sk, &qlen, &inet_diag_rcv_msg);
+                mutex_unlock(&inet_diag_mutex);
         } while (qlen);
 }