1 files changed, 2 insertions, 0 deletions

diff --git a/mm/page_cgroup.c b/mm/page_cgroup.c
index 4f31c9b3e940..672089d5819f 100644
--- a/mm/page_cgroup.c
+++ b/mm/page_cgroup.c
@@ -99,6 +99,8 @@ struct page_cgroup *lookup_page_cgroup(struct page *page)
         unsigned long pfn = page_to_pfn(page);
         struct mem_section *section = __pfn_to_section(pfn);
 
+        if (!section->page_cgroup)
+                return NULL;
         return section->page_cgroup + pfn;
 }