diff options
Diffstat (limited to 'drivers/misc/sgi-gru/grufault.c')
| -rw-r--r-- | drivers/misc/sgi-gru/grufault.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/grufault.c index 6fb773dbcd0c..93be82fc338a 100644 --- a/drivers/misc/sgi-gru/grufault.c +++ b/drivers/misc/sgi-gru/grufault.c @@ -219,15 +219,20 @@ static int atomic_pte_lookup(struct vm_area_struct *vma, unsigned long vaddr, int write, unsigned long *paddr, int *pageshift) { pgd_t *pgdp; - pmd_t *pmdp; + p4d_t *p4dp; pud_t *pudp; + pmd_t *pmdp; pte_t pte; pgdp = pgd_offset(vma->vm_mm, vaddr); if (unlikely(pgd_none(*pgdp))) goto err; - pudp = pud_offset(pgdp, vaddr); + p4dp = p4d_offset(pgdp, vaddr); + if (unlikely(p4d_none(*p4dp))) + goto err; + + pudp = pud_offset(p4dp, vaddr); if (unlikely(pud_none(*pudp))) goto err; |