diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 479a344..a324b4b 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -104,6 +104,7 @@
 
 /* Protects netlink socket hash table mutations */
 DEFINE_MUTEX(nl_sk_hash_lock);
+EXPORT_SYMBOL_GPL(nl_sk_hash_lock);
 
 static int lockdep_nl_sk_hash_is_held(void)
 {