x86, sparse: Do not force removal of __user when calling copy_to/from_user_nocheck()

[pandora-kernel.git] / mm / rmap.c

diff --git a/mm/rmap.c b/mm/rmap.c
index 55c8b8d..068522d 100644 (file)
--- 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;
        }