diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 37e69295f250d585b1a2f7e9bf38f80b7186cdbb..d55d905463ebc6186527403a5c9343894cdd189b 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -555,10 +555,8 @@ static void __purge_vmap_area_lazy(unsigned long *start, unsigned long *end,
 	}
 	rcu_read_unlock();
 
-	if (nr) {
-		BUG_ON(nr > atomic_read(&vmap_lazy_nr));
+	if (nr)
 		atomic_sub(nr, &vmap_lazy_nr);
-	}
 
 	if (nr || force_flush)
 		flush_tlb_kernel_range(*start, *end);