From patchwork Wed Mar 9 01:47:02 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peng Liu X-Patchwork-Id: 12774592 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 53ECBC4332F for ; Wed, 9 Mar 2022 01:29:51 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id BEE158D0003; Tue, 8 Mar 2022 20:29:50 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id B9EAE8D0002; Tue, 8 Mar 2022 20:29:50 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A65438D0003; Tue, 8 Mar 2022 20:29:50 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (relay.hostedemail.com [64.99.140.27]) by kanga.kvack.org (Postfix) with ESMTP id 90BF78D0001 for ; Tue, 8 Mar 2022 20:29:50 -0500 (EST) Received: from smtpin05.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id 6BDF16095F for ; Wed, 9 Mar 2022 01:29:50 +0000 (UTC) X-FDA: 79223116140.05.108DA8C Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by imf21.hostedemail.com (Postfix) with ESMTP id 6E5031C000A for ; Wed, 9 Mar 2022 01:29:49 +0000 (UTC) Received: from kwepemi100014.china.huawei.com (unknown [172.30.72.57]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4KCvj30fh4zdZMk; Wed, 9 Mar 2022 09:28:23 +0800 (CST) Received: from kwepemm600017.china.huawei.com (7.193.23.234) by kwepemi100014.china.huawei.com (7.221.188.106) 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 09:29:45 +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 09:29:44 +0800 From: Peng Liu To: , , , , , , , , , CC: , Subject: [PATCH 0/3] kunit: fix a UAF bug and do some optimization Date: Wed, 9 Mar 2022 01:47:02 +0000 Message-ID: <20220309014705.1265861-1-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: dggems701-chm.china.huawei.com (10.3.19.178) To kwepemm600017.china.huawei.com (7.193.23.234) X-CFilter-Loop: Reflected X-Rspamd-Queue-Id: 6E5031C000A X-Stat-Signature: h7bq4ii8p4dtceyzjgo7nqafc1kqs3i4 X-Rspam-User: Authentication-Results: imf21.hostedemail.com; dkim=none; dmarc=pass (policy=quarantine) header.from=huawei.com; spf=pass (imf21.hostedemail.com: domain of liupeng256@huawei.com designates 45.249.212.188 as permitted sender) smtp.mailfrom=liupeng256@huawei.com X-Rspamd-Server: rspam03 X-HE-Tag: 1646789389-71005 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_DYNAMIC_OBJECTS = 65535. Furthermore, some optimization for kunit tests has been done. 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(-)