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path: root/arch/arm/lib/uaccess_with_memcpy.c
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Diffstat (limited to 'arch/arm/lib/uaccess_with_memcpy.c')
-rw-r--r--arch/arm/lib/uaccess_with_memcpy.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/arm/lib/uaccess_with_memcpy.c b/arch/arm/lib/uaccess_with_memcpy.c
index e2d2f2cd0c4..8b9b13649f8 100644
--- a/arch/arm/lib/uaccess_with_memcpy.c
+++ b/arch/arm/lib/uaccess_with_memcpy.c
@@ -27,13 +27,18 @@ pin_page_for_write(const void __user *_addr, pte_t **ptep, spinlock_t **ptlp)
pgd_t *pgd;
pmd_t *pmd;
pte_t *pte;
+ pud_t *pud;
spinlock_t *ptl;
pgd = pgd_offset(current->mm, addr);
if (unlikely(pgd_none(*pgd) || pgd_bad(*pgd)))
return 0;
- pmd = pmd_offset(pgd, addr);
+ pud = pud_offset(pgd, addr);
+ if (unlikely(pud_none(*pud) || pud_bad(*pud)))
+ return 0;
+
+ pmd = pmd_offset(pud, addr);
if (unlikely(pmd_none(*pmd) || pmd_bad(*pmd)))
return 0;