diff --git a/mm/mmap.c b/mm/mmap.c
index bf2298de8a0f..26cff775c25a 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2902,6 +2902,8 @@ 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);
 	mas_store_prealloc(&mas, vma);
 	mm->map_count++;
 	if (vma->vm_file) {