diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
index e6bcf01411d0..13b5e35e8790 100644
--- a/net/ipv4/ip_tunnel.c
+++ b/net/ipv4/ip_tunnel.c
@@ -491,19 +491,17 @@ int ip_tunnel_encap_setup(struct ip_tunnel *t,
 {
 	int hlen;
 
-	memset(&t->encap, 0, sizeof(t->encap));
-
 	hlen = ip_encap_hlen(ipencap);
 	if (hlen < 0)
 		return hlen;
 
-	t->encap.type = ipencap->type;
-	t->encap.sport = ipencap->sport;
-	t->encap.dport = ipencap->dport;
-	t->encap.flags = ipencap->flags;
+	WRITE_ONCE(t->encap.type, ipencap->type);
+	WRITE_ONCE(t->encap.sport, ipencap->sport);
+	WRITE_ONCE(t->encap.dport, ipencap->dport);
+	WRITE_ONCE(t->encap.flags, ipencap->flags);
 
-	t->encap_hlen = hlen;
-	t->hlen = t->encap_hlen + t->tun_hlen;
+	WRITE_ONCE(t->encap_hlen, hlen);
+	WRITE_ONCE(t->hlen, hlen + t->tun_hlen);
 
 	return 0;
 }