1 files changed, 4 insertions, 1 deletions

diff --git a/mm/memory.c b/mm/memory.c
index bbab1e37055..48c122d42ed 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -969,7 +969,7 @@ struct page *follow_page(struct vm_area_struct *vma, unsigned long address,
                 goto no_page_table;
         
         pmd = pmd_offset(pud, address);
-        if (pmd_none(*pmd) || unlikely(pmd_bad(*pmd)))
+        if (pmd_none(*pmd))
                 goto no_page_table;
 
         if (pmd_huge(*pmd)) {
@@ -978,6 +978,9 @@ struct page *follow_page(struct vm_area_struct *vma, unsigned long address,
                 goto out;
         }
 
+        if (unlikely(pmd_bad(*pmd)))
+                goto no_page_table;
+
         ptep = pte_offset_map_lock(mm, pmd, address, &ptl);
         if (!ptep)
                 goto out;