From patchwork Wed Mar 9 08:37:50 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peng Liu X-Patchwork-Id: 12774829 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 822CBC433EF for ; Wed, 9 Mar 2022 08:19:42 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 9157F8D0018; Wed, 9 Mar 2022 03:19:41 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 8C4F48D0001; Wed, 9 Mar 2022 03:19:41 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 7B47E8D0018; Wed, 9 Mar 2022 03:19:41 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0075.hostedemail.com [216.40.44.75]) by kanga.kvack.org (Postfix) with ESMTP id 69C328D0001 for ; Wed, 9 Mar 2022 03:19:41 -0500 (EST) Received: from smtpin22.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 23326A15E0 for ; Wed, 9 Mar 2022 08:19:41 +0000 (UTC) X-FDA: 79224148962.22.EEBA845 Received: from szxga08-in.huawei.com (szxga08-in.huawei.com [45.249.212.255]) by imf12.hostedemail.com (Postfix) with ESMTP id 68A6440007 for ; Wed, 9 Mar 2022 08:19:40 +0000 (UTC) Received: from kwepemi500008.china.huawei.com (unknown [172.30.72.56]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4KD4k00LnFz1GCDF; Wed, 9 Mar 2022 16:14:48 +0800 (CST) Received: from kwepemm600017.china.huawei.com (7.193.23.234) by kwepemi500008.china.huawei.com (7.221.188.139) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Wed, 9 Mar 2022 16:19:36 +0800 Received: from localhost.localdomain (10.175.112.125) by kwepemm600017.china.huawei.com (7.193.23.234) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Wed, 9 Mar 2022 16:19:35 +0800 From: Peng Liu To: , , , , , , , , , CC: , Subject: [PATCH v2 0/3] kunit: fix a UAF bug and do some optimization Date: Wed, 9 Mar 2022 08:37:50 +0000 Message-ID: <20220309083753.1561921-1-liupeng256@huawei.com> X-Mailer: git-send-email 2.18.0.huawei.25 MIME-Version: 1.0 X-Originating-IP: [10.175.112.125] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To kwepemm600017.china.huawei.com (7.193.23.234) X-CFilter-Loop: Reflected X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 68A6440007 X-Rspam-User: Authentication-Results: imf12.hostedemail.com; dkim=none; dmarc=pass (policy=quarantine) header.from=huawei.com; spf=pass (imf12.hostedemail.com: domain of liupeng256@huawei.com designates 45.249.212.255 as permitted sender) smtp.mailfrom=liupeng256@huawei.com X-Stat-Signature: 1qmcdehire63epdkr73mhktgxi9ahwmc X-HE-Tag: 1646813980-515301 X-Bogosity: Ham, tests=bogofilter, spamicity=0.027941, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: This series is to fix UAF when running kfence test case test_gfpzero, which is time costly. This UAF bug can be easily triggered by setting CONFIG_KFENCE_NUM_OBJECTS = 65535. Furthermore, some optimization for kunit tests has been done. v1->v2: Change log is updated. Peng Liu (3): kunit: fix UAF when run kfence test case test_gfpzero kunit: make kunit_test_timeout compatible with comment kfence: test: try to avoid test_gfpzero trigger rcu_stall lib/kunit/try-catch.c | 3 ++- mm/kfence/kfence_test.c | 3 ++- 2 files changed, 4 insertions(+), 2 deletions(-) Tested-by: Brendan Higgins