diff --git a/include/net/inet_timewait_sock.h b/include/net/inet_timewait_sock.h
index 4b8ece22b8e94417879a6504e87afe5bd0ecc371..b63b80fac567a2e103c996d8c021b10ef6e150e8 100644
--- a/include/net/inet_timewait_sock.h
+++ b/include/net/inet_timewait_sock.h
@@ -16,6 +16,7 @@
 #define _INET_TIMEWAIT_SOCK_
 
 
+#include <linux/kmemcheck.h>
 #include <linux/list.h>
 #include <linux/module.h>
 #include <linux/timer.h>
@@ -127,10 +128,12 @@ struct inet_timewait_sock {
 	__be32			tw_rcv_saddr;
 	__be16			tw_dport;
 	__u16			tw_num;
+	kmemcheck_bitfield_begin(flags);
 	/* And these are ours. */
 	__u8			tw_ipv6only:1,
 				tw_transparent:1;
-	/* 15 bits hole, try to pack */
+	/* 14 bits hole, try to pack */
+	kmemcheck_bitfield_end(flags);
 	__u16			tw_ipv6_offset;
 	unsigned long		tw_ttd;
 	struct inet_bind_bucket	*tw_tb;
diff --git a/net/ipv4/inet_timewait_sock.c b/net/ipv4/inet_timewait_sock.c
index 8554d0ea1719b7621667026a1641cb7da20ca2d4..03169fc848779fc0ee53bf3f76b05c5357c7f1bb 100644
--- a/net/ipv4/inet_timewait_sock.c
+++ b/net/ipv4/inet_timewait_sock.c
@@ -9,6 +9,7 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/kmemcheck.h>
 #include <net/inet_hashtables.h>
 #include <net/inet_timewait_sock.h>
 #include <net/ip.h>
@@ -117,6 +118,8 @@ struct inet_timewait_sock *inet_twsk_alloc(const struct sock *sk, const int stat
 	if (tw != NULL) {
 		const struct inet_sock *inet = inet_sk(sk);
 
+		kmemcheck_annotate_bitfield(tw, flags);
+
 		/* Give us an identity. */
 		tw->tw_daddr	    = inet->daddr;
 		tw->tw_rcv_saddr    = inet->rcv_saddr;