diff options
Diffstat (limited to 'arch/s390/lib')
| -rw-r--r-- | arch/s390/lib/uaccess_pt.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/s390/lib/uaccess_pt.c b/arch/s390/lib/uaccess_pt.c index dc37ea827f4e..7e8efaade2ea 100644 --- a/arch/s390/lib/uaccess_pt.c +++ b/arch/s390/lib/uaccess_pt.c @@ -18,13 +18,18 @@ static inline pte_t *follow_table(struct mm_struct *mm, unsigned long addr) { pgd_t *pgd; + pud_t *pud; pmd_t *pmd; pgd = pgd_offset(mm, addr); if (pgd_none(*pgd) || unlikely(pgd_bad(*pgd))) return NULL; - pmd = pmd_offset(pgd, addr); + pud = pud_offset(pgd, addr); + if (pud_none(*pud) || unlikely(pud_bad(*pud))) + return NULL; + + pmd = pmd_offset(pud, addr); if (pmd_none(*pmd) || unlikely(pmd_bad(*pmd))) return NULL; |