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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 26B9CC433EF for ; Wed, 17 Nov 2021 02:15:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 06B836322C for ; Wed, 17 Nov 2021 02:15:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232535AbhKQCSc (ORCPT ); Tue, 16 Nov 2021 21:18:32 -0500 Received: from szxga01-in.huawei.com ([45.249.212.187]:31877 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229910AbhKQCSb (ORCPT ); Tue, 16 Nov 2021 21:18:31 -0500 Received: from dggemv711-chm.china.huawei.com (unknown [172.30.72.55]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4Hv5xT2vXLzcbPb; Wed, 17 Nov 2021 10:10:37 +0800 (CST) Received: from dggpemm500001.china.huawei.com (7.185.36.107) by dggemv711-chm.china.huawei.com (10.1.198.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.20; Wed, 17 Nov 2021 10:15:30 +0800 Received: from [10.174.177.243] (10.174.177.243) by dggpemm500001.china.huawei.com (7.185.36.107) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.2308.20; Wed, 17 Nov 2021 10:15:30 +0800 Message-ID: <7ae0d25e-4baa-76e2-4937-9b413af25591@huawei.com> Date: Wed, 17 Nov 2021 10:15:30 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.2.0 Subject: Re: arch/arm/mm/fault.c:210:24: sparse: sparse: incorrect type in return expression (different base types) Content-Language: en-US To: kernel test robot CC: , , "Russell King (Oracle)" References: <202111170449.8KzXziyR-lkp@intel.com> From: Kefeng Wang In-Reply-To: <202111170449.8KzXziyR-lkp@intel.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [10.174.177.243] X-ClientProxiedBy: dggeme711-chm.china.huawei.com (10.1.199.107) To dggpemm500001.china.huawei.com (7.185.36.107) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org https://lore.kernel.org/linux-arm-kernel/20211115075834.156838-1-wangkefeng.wang@huawei.com/ On 2021/11/17 4:14, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > head: 8ab774587903771821b59471cc723bba6d893942 > commit: caed89dab0ca0e73d7e016c04e1f5957650f4ec3 ARM: 9128/1: mm: Refactor the __do_page_fault() > date: 4 weeks ago > config: arm-randconfig-s031-20211116 (attached as .config) > compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0 > reproduce: > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # apt-get install sparse > # sparse version: v0.6.4-dirty > # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=caed89dab0ca0e73d7e016c04e1f5957650f4ec3 > git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > git fetch --no-tags linus master > git checkout caed89dab0ca0e73d7e016c04e1f5957650f4ec3 > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm SHELL=/bin/bash arch/arm/mm/ > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot > > > sparse warnings: (new ones prefixed by >>) >>> arch/arm/mm/fault.c:210:24: sparse: sparse: incorrect type in return expression (different base types) @@ expected restricted vm_fault_t @@ got int @@ > arch/arm/mm/fault.c:210:24: sparse: expected restricted vm_fault_t > arch/arm/mm/fault.c:210:24: sparse: got int > arch/arm/mm/fault.c:214:32: sparse: sparse: incorrect type in return expression (different base types) @@ expected restricted vm_fault_t @@ got int @@ > arch/arm/mm/fault.c:214:32: sparse: expected restricted vm_fault_t > arch/arm/mm/fault.c:214:32: sparse: got int > arch/arm/mm/fault.c:216:32: sparse: sparse: incorrect type in return expression (different base types) @@ expected restricted vm_fault_t @@ got int @@ > arch/arm/mm/fault.c:216:32: sparse: expected restricted vm_fault_t > arch/arm/mm/fault.c:216:32: sparse: got int > arch/arm/mm/fault.c:218:32: sparse: sparse: incorrect type in return expression (different base types) @@ expected restricted vm_fault_t @@ got int @@ > arch/arm/mm/fault.c:218:32: sparse: expected restricted vm_fault_t > arch/arm/mm/fault.c:218:32: sparse: got int > arch/arm/mm/fault.c:226:24: sparse: sparse: incorrect type in return expression (different base types) @@ expected restricted vm_fault_t @@ got int @@ > arch/arm/mm/fault.c:226:24: sparse: expected restricted vm_fault_t > arch/arm/mm/fault.c:226:24: sparse: got int > arch/arm/mm/fault.c:312:13: sparse: sparse: restricted vm_fault_t degrades to integer > arch/arm/mm/fault.c:312:13: sparse: sparse: restricted vm_fault_t degrades to integer > arch/arm/mm/fault.c:345:24: sparse: sparse: restricted vm_fault_t degrades to integer >