--- x/mm/vma.c
+++ y/mm/vma.c
@@ -458,6 +458,7 @@ static bool can_vma_merge_right(struct v
 void remove_vma(struct vm_area_struct *vma)
 {
 	might_sleep();
+	vma_start_write(vma);
 	vma_close(vma);
 	if (vma->vm_file)
 		fput(vma->vm_file);