diff options
Diffstat (limited to 'arch/xtensa/mm/fault.c')
| -rw-r--r-- | arch/xtensa/mm/fault.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/xtensa/mm/fault.c b/arch/xtensa/mm/fault.c index f81b1478da61..68a041402025 100644 --- a/arch/xtensa/mm/fault.c +++ b/arch/xtensa/mm/fault.c @@ -197,6 +197,7 @@ vmalloc_fault: struct mm_struct *act_mm = current->active_mm; int index = pgd_index(address); pgd_t *pgd, *pgd_k; + pud_t *pud, *pud_k; pmd_t *pmd, *pmd_k; pte_t *pte_k; @@ -211,8 +212,13 @@ vmalloc_fault: pgd_val(*pgd) = pgd_val(*pgd_k); - pmd = pmd_offset(pgd, address); - pmd_k = pmd_offset(pgd_k, address); + pud = pud_offset(pgd, address); + pud_k = pud_offset(pgd_k, address); + if (!pud_present(*pud) || !pud_present(*pud_k)) + goto bad_page_fault; + + pmd = pmd_offset(pud, address); + pmd_k = pmd_offset(pud_k, address); if (!pmd_present(*pmd) || !pmd_present(*pmd_k)) goto bad_page_fault; |