Mark VMA as locked before copying it and when copy_vma produces a new VMA. Signed-off-by: Suren Baghdasaryan <surenb@xxxxxxxxxx> --- mm/mmap.c | 1 + mm/mremap.c | 1 + 2 files changed, 2 insertions(+) diff --git a/mm/mmap.c b/mm/mmap.c index ade3909c89b4..121544fd90de 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -3248,6 +3248,7 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap, get_file(new_vma->vm_file); if (new_vma->vm_ops && new_vma->vm_ops->open) new_vma->vm_ops->open(new_vma); + vma_mark_locked(new_vma); vma_link(mm, new_vma, prev, rb_link, rb_parent); *need_rmap_locks = false; } diff --git a/mm/mremap.c b/mm/mremap.c index b522cd0259a0..bdbf96254e43 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -620,6 +620,7 @@ static unsigned long move_vma(struct vm_area_struct *vma, return -ENOMEM; } + vma_mark_locked(vma); new_pgoff = vma->vm_pgoff + ((old_addr - vma->vm_start) >> PAGE_SHIFT); new_vma = copy_vma(&vma, new_addr, new_len, new_pgoff, &need_rmap_locks); -- 2.37.2.789.g6183377224-goog
