1 files changed, 3 insertions, 0 deletions

diff --git a/net/ipv6/anycast.c b/net/ipv6/anycast.c
index 2f4f584d796d..757a810d8f15 100644
--- a/net/ipv6/anycast.c
+++ b/net/ipv6/anycast.c
@@ -189,6 +189,9 @@ void ipv6_sock_ac_close(struct sock *sk)
         struct net *net = sock_net(sk);
         int     prev_index;
 
+        if (!np->ipv6_ac_list)
+                return;
+
         write_lock_bh(&ipv6_sk_ac_lock);
         pac = np->ipv6_ac_list;
         np->ipv6_ac_list = NULL;