1 files changed, 8 insertions, 1 deletions

diff --git a/net/netfilter/nf_conntrack_extend.c b/net/netfilter/nf_conntrack_extend.c
index bcc19fa4ed1e..8a3f8b34e466 100644
--- a/net/netfilter/nf_conntrack_extend.c
+++ b/net/netfilter/nf_conntrack_extend.c
@@ -59,12 +59,19 @@ nf_ct_ext_create(struct nf_ct_ext **ext, enum nf_ct_ext_id id, gfp_t gfp)
         if (!*ext)
                 return NULL;
 
+        INIT_RCU_HEAD(&(*ext)->rcu);
         (*ext)->offset[id] = off;
         (*ext)->len = len;
 
         return (void *)(*ext) + off;
 }
 
+static void __nf_ct_ext_free_rcu(struct rcu_head *head)
+{
+        struct nf_ct_ext *ext = container_of(head, struct nf_ct_ext, rcu);
+        kfree(ext);
+}
+
 void *__nf_ct_ext_add(struct nf_conn *ct, enum nf_ct_ext_id id, gfp_t gfp)
 {
         struct nf_ct_ext *new;
@@ -106,7 +113,7 @@ void *__nf_ct_ext_add(struct nf_conn *ct, enum nf_ct_ext_id id, gfp_t gfp)
                                         (void *)ct->ext + ct->ext->offset[i]);
                         rcu_read_unlock();
                 }
-                kfree(ct->ext);
+                call_rcu(&ct->ext->rcu, __nf_ct_ext_free_rcu);
                 ct->ext = new;
         }