1 files changed, 12 insertions, 1 deletions

diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index d4defdd44937..42923b14dfa6 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -1432,6 +1432,17 @@ void udp6_proc_exit(struct net *net) {
 }
 #endif /* CONFIG_PROC_FS */
 
+void udp_v6_clear_sk(struct sock *sk, int size)
+{
+        struct inet_sock *inet = inet_sk(sk);
+
+        /* we do not want to clear pinet6 field, because of RCU lookups */
+        sk_prot_clear_portaddr_nulls(sk, offsetof(struct inet_sock, pinet6));
+
+        size -= offsetof(struct inet_sock, pinet6) + sizeof(inet->pinet6);
+        memset(&inet->pinet6 + 1, 0, size);
+}
+
 /* ------------------------------------------------------------------------ */
 
 struct proto udpv6_prot = {
@@ -1462,7 +1473,7 @@ struct proto udpv6_prot = {
         .compat_setsockopt = compat_udpv6_setsockopt,
         .compat_getsockopt = compat_udpv6_getsockopt,
 #endif
-        .clear_sk          = sk_prot_clear_portaddr_nulls,
+        .clear_sk          = udp_v6_clear_sk,
 };
 
 static struct inet_protosw udpv6_protosw = {