--- y/drivers/android/binder_alloc.c
+++ b/drivers/android/binder_alloc.c
@@ -320,7 +320,7 @@ static inline void binder_alloc_set_vma(
 		alloc->vma_vm_mm = vma->vm_mm;
 	}
 
-	mmap_assert_write_locked(alloc->vma_vm_mm);
+	mmap_assert_locked(alloc->vma_vm_mm);
 	alloc->vma_addr = vm_start;
 }