From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DEFE1ECAAD5 for ; Mon, 12 Sep 2022 06:00:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229544AbiILF76 (ORCPT ); Mon, 12 Sep 2022 01:59:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58562 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229459AbiILF7y (ORCPT ); Mon, 12 Sep 2022 01:59:54 -0400 Received: from out30-43.freemail.mail.aliyun.com (out30-43.freemail.mail.aliyun.com [115.124.30.43]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CF66013E04 for ; Sun, 11 Sep 2022 22:59:51 -0700 (PDT) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R151e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018045192;MF=luoben@linux.alibaba.com;NM=1;PH=DS;RN=11;SR=0;TI=SMTPD_---0VPOQ3u0_1662962379; Received: from localhost(mailfrom:luoben@linux.alibaba.com fp:SMTPD_---0VPOQ3u0_1662962379) by smtp.aliyun-inc.com; Mon, 12 Sep 2022 13:59:45 +0800 From: Ben Luo To: cl@linux.com, penberg@kernel.org, rientjes@google.com, iamjoonsoo.kim@lge.com, akpm@linux-foundation.org, vbabka@suse.cz, roman.gushchin@linux.dev, 42.hyeyoo@gmail.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: luoben@linux.alibaba.com Subject: [PATCH] mm/slub: return 0 when object pointer is NULL Date: Mon, 12 Sep 2022 13:59:39 +0800 Message-Id: <1662962379-16174-1-git-send-email-luoben@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org NULL is definitly not a valid address Signed-off-by: Ben Luo --- mm/slub.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/slub.c b/mm/slub.c index 862dbd9..50fad18 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -674,7 +674,7 @@ static inline int check_valid_pointer(struct kmem_cache *s, void *base; if (!object) - return 1; + return 0; base = slab_address(slab); object = kasan_reset_tag(object); -- 1.8.3.1