1 files changed, 2 insertions, 0 deletions

diff --git a/mm/mmap.c b/mm/mmap.c
index 2d942353d681..9a796c41e7d9 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -334,8 +334,10 @@ void validate_mm(struct mm_struct *mm)
         struct vm_area_struct *vma = mm->mmap;
         while (vma) {
                 struct anon_vma_chain *avc;
+                vma_lock_anon_vma(vma);
                 list_for_each_entry(avc, &vma->anon_vma_chain, same_vma)
                         anon_vma_interval_tree_verify(avc);
+                vma_unlock_anon_vma(vma);
                 vma = vma->vm_next;
                 i++;
         }