1 files changed, 10 insertions, 6 deletions

diff --git a/net/tipc/link.c b/net/tipc/link.c
index 882c5c9c52f9..c5190ab75290 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -280,13 +280,13 @@ struct tipc_link *tipc_link_create(struct tipc_node *n_ptr,
         return l_ptr;
 }
 
-
 void tipc_link_delete_list(unsigned int bearer_id, bool shutting_down)
 {
         struct tipc_link *l_ptr;
         struct tipc_node *n_ptr;
 
-        list_for_each_entry(n_ptr, &tipc_node_list, list) {
+        rcu_read_lock();
+        list_for_each_entry_rcu(n_ptr, &tipc_node_list, list) {
                 spin_lock_bh(&n_ptr->lock);
                 l_ptr = n_ptr->links[bearer_id];
                 if (l_ptr) {
@@ -309,6 +309,7 @@ void tipc_link_delete_list(unsigned int bearer_id, bool shutting_down)
                 }
                 spin_unlock_bh(&n_ptr->lock);
         }
+        rcu_read_unlock();
 }
 
 /**
@@ -461,13 +462,15 @@ void tipc_link_reset_list(unsigned int bearer_id)
         struct tipc_link *l_ptr;
         struct tipc_node *n_ptr;
 
-        list_for_each_entry(n_ptr, &tipc_node_list, list) {
+        rcu_read_lock();
+        list_for_each_entry_rcu(n_ptr, &tipc_node_list, list) {
                 spin_lock_bh(&n_ptr->lock);
                 l_ptr = n_ptr->links[bearer_id];
                 if (l_ptr)
                         tipc_link_reset(l_ptr);
                 spin_unlock_bh(&n_ptr->lock);
         }
+        rcu_read_unlock();
 }
 
 static void link_activate(struct tipc_link *l_ptr)
@@ -2404,13 +2407,12 @@ static struct tipc_node *tipc_link_find_owner(const char *link_name,
 {
         struct tipc_link *l_ptr;
         struct tipc_node *n_ptr;
-        struct tipc_node *tmp_n_ptr;
         struct tipc_node *found_node = 0;
-
         int i;
 
         *bearer_id = 0;
-        list_for_each_entry_safe(n_ptr, tmp_n_ptr, &tipc_node_list, list) {
+        rcu_read_lock();
+        list_for_each_entry_rcu(n_ptr, &tipc_node_list, list) {
                 tipc_node_lock(n_ptr);
                 for (i = 0; i < MAX_BEARERS; i++) {
                         l_ptr = n_ptr->links[i];
@@ -2424,6 +2426,8 @@ static struct tipc_node *tipc_link_find_owner(const char *link_name,
                 if (found_node)
                         break;
         }
+        rcu_read_unlock();
+
         return found_node;
 }