From patchwork Sun Sep 26 07:20:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kefeng Wang X-Patchwork-Id: 12517979 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 097A2C433F5 for ; Sun, 26 Sep 2021 07:18:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E003A60F94 for ; Sun, 26 Sep 2021 07:18:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231223AbhIZHTq (ORCPT ); Sun, 26 Sep 2021 03:19:46 -0400 Received: from szxga02-in.huawei.com ([45.249.212.188]:19364 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231124AbhIZHTq (ORCPT ); Sun, 26 Sep 2021 03:19:46 -0400 Received: from dggemv711-chm.china.huawei.com (unknown [172.30.72.55]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4HHH7N57H2zRSQg; Sun, 26 Sep 2021 15:13:52 +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 15.1.2308.8; Sun, 26 Sep 2021 15:18:07 +0800 Received: from localhost.localdomain.localdomain (10.175.113.25) by dggpemm500001.china.huawei.com (7.185.36.107) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.8; Sun, 26 Sep 2021 15:18:06 +0800 From: Kefeng Wang To: , , , , , , , , , CC: , , , , Kefeng Wang Subject: [PATCH v3 0/9] sections: Unify kernel sections range check and use Date: Sun, 26 Sep 2021 15:20:39 +0800 Message-ID: <20210926072048.190336-1-wangkefeng.wang@huawei.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 X-Originating-IP: [10.175.113.25] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To dggpemm500001.china.huawei.com (7.185.36.107) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org There are three head files(kallsyms.h, kernel.h and sections.h) which include the kernel sections range check, let's make some cleanup and unify them. 1. cleanup arch specific text/data check and fix address boundary check in kallsyms.h 2. make all the basic/core kernel range check function into sections.h 3. update all the callers, and use the helper in sections.h to simplify the code After this series, we have 5 APIs about kernel sections range check in sections.h * is_kernel_rodata() --- already in sections.h * is_kernel_core_data() --- come from core_kernel_data() in kernel.h * is_kernel_inittext() --- come from kernel.h and kallsyms.h * __is_kernel_text() --- add new internal helper * __is_kernel() --- add new internal helper Note: For the last two helpers, people should not use directly, consider to use corresponding function in kallsyms.h. v3: - Add Steven's RB to patch2 - Introduce two internal helper, then use is_kernel_text() in core_kernel_text() and is_kernel() in kernel_or_module_addr() suggested by Steven v2: https://lore.kernel.org/linux-arch/20210728081320.20394-1-wangkefeng.wang@huawei.com/ - add ACK/RW to patch2, and drop inappropriate fix tag - keep 'core' to check kernel data, suggestted by Steven Rostedt , rename is_kernel_data() to is_kernel_core_data() - drop patch8 which is merged - drop patch9 which is resend independently v1: https://lore.kernel.org/linux-arch/20210626073439.150586-1-wangkefeng.wang@huawei.com Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-arch@vger.kernel.org Cc: bpf@vger.kernel.org Kefeng Wang (9): kallsyms: Remove arch specific text and data check kallsyms: Fix address-checks for kernel related range sections: Move and rename core_kernel_data() to is_kernel_core_data() sections: Move is_kernel_inittext() into sections.h x86: mm: Rename __is_kernel_text() to is_x86_32_kernel_text() sections: Provide internal __is_kernel() and __is_kernel_text() helper mm: kasan: Use is_kernel() helper extable: Use is_kernel_text() helper powerpc/mm: Use is_kernel_text() and is_kernel_inittext() helper arch/powerpc/mm/pgtable_32.c | 7 +--- arch/x86/kernel/unwind_orc.c | 2 +- arch/x86/mm/init_32.c | 14 +++---- include/asm-generic/sections.h | 75 ++++++++++++++++++++++++++-------- include/linux/kallsyms.h | 13 +----- include/linux/kernel.h | 2 - kernel/extable.c | 33 ++------------- kernel/locking/lockdep.c | 3 -- kernel/trace/ftrace.c | 2 +- mm/kasan/report.c | 2 +- net/sysctl_net.c | 2 +- 11 files changed, 75 insertions(+), 80 deletions(-)