1 files changed, 2 insertions, 0 deletions

diff --git a/kernel/resource.c b/kernel/resource.c
index 7b36976e5dea..9c9841cb6902 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -453,6 +453,8 @@ static struct resource * __insert_resource(struct resource *parent, struct resou
 
                 if (first == parent)
                         return first;
+                if (WARN_ON(first == new))      /* duplicated insertion */
+                        return first;
 
                 if ((first->start > new->start) || (first->end < new->end))
                         break;