Merge tag 'v3.13-rc8' into x86/ras, to pick up fixes.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/mm/rmap.c b/mm/rmap.c
index 55c8b8dc9ffb..068522d8502a 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -600,7 +600,11 @@ pte_t *__page_check_address(struct page *page, struct mm_struct *mm,
         spinlock_t *ptl;
 
         if (unlikely(PageHuge(page))) {
+                /* when pud is not present, pte will be NULL */
                 pte = huge_pte_offset(mm, address);
+                if (!pte)
+                        return NULL;
+
                 ptl = huge_pte_lockptr(page_hstate(page), mm, pte);
                 goto check;
         }