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-rw-r--r--mm/mmap.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/mmap.c b/mm/mmap.c
index c66e4622a557..84c71431a527 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2812,6 +2812,8 @@ cannot_expand:
if (vma->vm_file)
i_mmap_lock_write(vma->vm_file->f_mapping);
+ /* Lock the VMA since it is modified after insertion into VMA tree */
+ vma_start_write(vma);
vma_iter_store(&vmi, vma);
mm->map_count++;
if (vma->vm_file) {