1 files changed, 18 insertions, 0 deletions

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index b3ee791ad663..3ca1d5ff0319 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1240,6 +1240,23 @@ int do_sysctl_strategy (ctl_table *table,
 }
 #endif /* CONFIG_SYSCTL_SYSCALL */
 
+static void sysctl_set_parent(struct ctl_table *parent, struct ctl_table *table)
+{
+        for (; table->ctl_name || table->procname; table++) {
+                table->parent = parent;
+                if (table->child)
+                        sysctl_set_parent(table, table->child);
+        }
+}
+
+static __init int sysctl_init(void)
+{
+        sysctl_set_parent(NULL, root_table);
+        return 0;
+}
+
+core_initcall(sysctl_init);
+
 /**
  * register_sysctl_table - register a sysctl hierarchy
  * @table: the top-level table structure
@@ -1318,6 +1335,7 @@ struct ctl_table_header *register_sysctl_table(ctl_table * table)
         INIT_LIST_HEAD(&tmp->ctl_entry);
         tmp->used = 0;
         tmp->unregistering = NULL;
+        sysctl_set_parent(NULL, table);
         spin_lock(&sysctl_lock);
         list_add_tail(&tmp->ctl_entry, &root_table_header.ctl_entry);
         spin_unlock(&sysctl_lock);