diff options
| -rw-r--r-- | mm/userfaultfd.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/mm/userfaultfd.c b/mm/userfaultfd.c index 68157359dc34..dd167184575e 100644 --- a/mm/userfaultfd.c +++ b/mm/userfaultfd.c @@ -300,7 +300,10 @@ static int mfill_atomic_pte_poison(pmd_t *dst_pmd, spinlock_t *ptl; _dst_pte = make_pte_marker(PTE_MARKER_POISONED); + ret = -EAGAIN; dst_pte = pte_offset_map_lock(dst_mm, dst_pmd, dst_addr, &ptl); + if (!dst_pte) + goto out; if (mfill_file_over_size(dst_vma, dst_addr)) { ret = -EFAULT; @@ -319,6 +322,7 @@ static int mfill_atomic_pte_poison(pmd_t *dst_pmd, ret = 0; out_unlock: pte_unmap_unlock(dst_pte, ptl); +out: return ret; } |