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 X-Spam-Level: X-Spam-Status: No, score=-7.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BDB72C5518A for ; Fri, 24 Apr 2020 06:45:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9D6D821655 for ; Fri, 24 Apr 2020 06:45:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726324AbgDXGpn (ORCPT ); Fri, 24 Apr 2020 02:45:43 -0400 Received: from mga17.intel.com ([192.55.52.151]:23572 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726072AbgDXGpn (ORCPT ); Fri, 24 Apr 2020 02:45:43 -0400 IronPort-SDR: eSVOhYbpE/RyQWdfBypNZZb8Uo9cSrmR/CJSiUGb7391vDsV+W7a45lnLsHerIcbBpPwpTLLYe qCHFSvLqF7yQ== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Apr 2020 23:45:42 -0700 IronPort-SDR: UFNXNo99gi3xSih5Mq+nRTg6KILpleImFdiu+1kkn0Jnd7ve0e89Sogsrwh6VVH+oGkDfDwL7A p0O+pGedimpg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,310,1583222400"; d="scan'208";a="291465264" Received: from linux.intel.com ([10.54.29.200]) by fmsmga002.fm.intel.com with ESMTP; 23 Apr 2020 23:45:42 -0700 Received: from [10.249.228.69] (abudanko-mobl.ccr.corp.intel.com [10.249.228.69]) by linux.intel.com (Postfix) with ESMTP id 30F71580100; Thu, 23 Apr 2020 23:45:40 -0700 (PDT) From: Alexey Budankov Subject: [PATCH v3 0/3] perf: make Perf tool aware of SELinux access control To: Arnaldo Carvalho de Melo Cc: Jiri Olsa , Namhyung Kim , Alexander Shishkin , Peter Zijlstra , Ingo Molnar , Andi Kleen , linux-kernel , "selinux@vger.kernel.org" , "linux-security-module@vger.kernel.org" Organization: Intel Corp. Message-ID: Date: Fri, 24 Apr 2020 09:45:39 +0300 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: owner-linux-security-module@vger.kernel.org Precedence: bulk List-ID: Changes in v3: - mention "CAP_PERFMON or CAP_SYS_ADMIN" instead of sole CAP_PERFMON or CAP_SYS_ADMIN capability in the docs and messages to support use case of newer Perf tool on kernel w/o CAP_PERFMON - reverted double new line in "No permission to enable %s event.\n\n" - updated security.txt content with new messages wording v2: https://lore.kernel.org/lkml/66f2975b-4a69-b428-7dc5-d9aa40b3c673@linux.intel.com/ Changes in v2: - implemented minor doc and code changes to substitute CAP_SYS_ADMIN with CAP_PERFMON capability; - introduced Perf doc file with instructions on how to enable and use perf_event LSM hooks for mandatory access control to perf_event_open() syscall; v1: https://lore.kernel.org/lkml/b8a0669e-36e4-a0e8-fd35-3dbd890d2170@linux.intel.com/ repo: git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git perf/core sha1: ee097e8ee56f8867cbbf45fe2a06f6b9e660c39c Extend Perf tool with the check of /sys/fs/selinux/enforce value and notify in case access to perf_event_open() syscall is restricted by the enforced SELinux policy settings. See new added security.txt file for exact steps how the changes look like and how to test the patch set. --- Alexey Budankov (3): perf docs: extend CAP_SYS_ADMIN with CAP_PERFMON where needed perf tool: make Perf tool aware of SELinux access control perf docs: introduce security.txt file to document related issues tools/perf/Documentation/perf-intel-pt.txt | 2 +- tools/perf/Documentation/security.txt | 237 +++++++++++++++++++++ tools/perf/util/cloexec.c | 4 +- tools/perf/util/evsel.c | 39 ++-- 4 files changed, 264 insertions(+), 18 deletions(-) create mode 100644 tools/perf/Documentation/security.txt -- 2.24.1