diff --git a/net/tipc/msg.c b/net/tipc/msg.c
index 1649d45..b0d07b3 100644
--- a/net/tipc/msg.c
+++ b/net/tipc/msg.c
@@ -174,7 +174,7 @@ int tipc_buf_append(struct sk_buff **headbuf, struct sk_buff **buf)
 
 	if (fragid == LAST_FRAGMENT) {
 		TIPC_SKB_CB(head)->validated = false;
-		if (unlikely(!tipc_msg_validate(head)))
+		if (unlikely(!tipc_msg_validate(&head)))
 			goto err;
 		*buf = head;
 		TIPC_SKB_CB(head)->tail = NULL;
@@ -201,11 +201,21 @@ int tipc_buf_append(struct sk_buff **headbuf, struct sk_buff **buf)
  * TIPC will ignore the excess, under the assumption that it is optional info
  * introduced by a later release of the protocol.
  */
-bool tipc_msg_validate(struct sk_buff *skb)
+bool tipc_msg_validate(struct sk_buff **_skb)
 {
-	struct tipc_msg *msg;
+	struct sk_buff *skb = *_skb;
+	struct tipc_msg *hdr;
 	int msz, hsz;
 
+	/* Ensure that flow control ratio condition is satisfied */
+	if (unlikely(skb->truesize / buf_roundup_len(skb) > 4)) {
+		skb = skb_copy(skb, GFP_ATOMIC);
+		if (!skb)
+			return false;
+		kfree_skb(*_skb);
+		*_skb = skb;
+	}
+
 	if (unlikely(TIPC_SKB_CB(skb)->validated))
 		return true;
 	if (unlikely(!pskb_may_pull(skb, MIN_H_SIZE)))
@@ -217,11 +227,11 @@ bool tipc_msg_validate(struct sk_buff *skb)
 	if (unlikely(!pskb_may_pull(skb, hsz)))
 		return false;
 
-	msg = buf_msg(skb);
-	if (unlikely(msg_version(msg) != TIPC_VERSION))
+	hdr = buf_msg(skb);
+	if (unlikely(msg_version(hdr) != TIPC_VERSION))
 		return false;
 
-	msz = msg_size(msg);
+	msz = msg_size(hdr);
 	if (unlikely(msz < hsz))
 		return false;
 	if (unlikely((msz - hsz) > TIPC_MAX_USER_MSG_SIZE))
@@ -411,7 +421,7 @@ bool tipc_msg_extract(struct sk_buff *skb, struct sk_buff **iskb, int *pos)
 	skb_pull(*iskb, offset);
 	imsz = msg_size(buf_msg(*iskb));
 	skb_trim(*iskb, imsz);
-	if (unlikely(!tipc_msg_validate(*iskb)))
+	if (unlikely(!tipc_msg_validate(iskb)))
 		goto none;
 	*pos += align(imsz);
 	return true;
diff --git a/net/tipc/msg.h b/net/tipc/msg.h
index bf8f57c..3e4384c 100644
--- a/net/tipc/msg.h
+++ b/net/tipc/msg.h
@@ -926,7 +926,7 @@ static inline bool msg_is_reset(struct tipc_msg *hdr)
 }
 
 struct sk_buff *tipc_buf_acquire(u32 size, gfp_t gfp);
-bool tipc_msg_validate(struct sk_buff *skb);
+bool tipc_msg_validate(struct sk_buff **_skb);
 bool tipc_msg_reverse(u32 own_addr, struct sk_buff **skb, int err);
 void tipc_skb_reject(struct net *net, int err, struct sk_buff *skb,
 		     struct sk_buff_head *xmitq);
@@ -954,6 +954,11 @@ static inline u16 buf_seqno(struct sk_buff *skb)
 	return msg_seqno(buf_msg(skb));
 }
 
+static inline int buf_roundup_len(struct sk_buff *skb)
+{
+	return (skb->len / 1024 + 1) * 1024;
+}
+
 /* tipc_skb_peek(): peek and reserve first buffer in list
  * @list: list to be peeked in
  * Returns pointer to first buffer in list, if any
diff --git a/net/tipc/node.c b/net/tipc/node.c
index 009a816..507017f 100644
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -1539,7 +1539,7 @@ void tipc_rcv(struct net *net, struct sk_buff *skb, struct tipc_bearer *b)
 	__skb_queue_head_init(&xmitq);
 
 	/* Ensure message is well-formed before touching the header */
-	if (unlikely(!tipc_msg_validate(skb)))
+	if (unlikely(!tipc_msg_validate(&skb)))
 		goto discard;
 	hdr = buf_msg(skb);
 	usr = msg_user(hdr);