diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index ca39cf20aa96d6986a49629f6d6911ea0950af89..be8054c04eb775ca1a2e92c2d12bb67ab41c89b6 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -1552,7 +1552,7 @@ static void cache_set_flush(struct closure *cl)
 	kobject_put(&c->internal);
 	kobject_del(&c->kobj);
 
-	if (c->gc_thread)
+	if (!IS_ERR_OR_NULL(c->gc_thread))
 		kthread_stop(c->gc_thread);
 
 	if (!IS_ERR_OR_NULL(c->root))