diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index abca870d8ff69fe76a19bef7d9338d4f80fabaf0..48cd88e625539cb7b94b34747233d57c1543bcee 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1249,6 +1249,9 @@ int udp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 
 	if (noblock)
 		return -EAGAIN;
+
+	/* starting over for a new packet */
+	msg->msg_flags &= ~MSG_TRUNC;
 	goto try_again;
 }
 
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 1e7a43f500ab5fac6a1f5d97af09aa49fd2c5249..328985c408838ad9e50fb1e209cc4f9c592a56a3 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -455,6 +455,9 @@ int udpv6_recvmsg(struct kiocb *iocb, struct sock *sk,
 
 	if (noblock)
 		return -EAGAIN;
+
+	/* starting over for a new packet */
+	msg->msg_flags &= ~MSG_TRUNC;
 	goto try_again;
 }