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=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no 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 A1AC5C43381 for ; Wed, 20 Jan 2021 05:10:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 50A5D2311C for ; Wed, 20 Jan 2021 05:10:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729608AbhATFGT (ORCPT ); Wed, 20 Jan 2021 00:06:19 -0500 Received: from namei.org ([65.99.196.166]:50812 "EHLO mail.namei.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729291AbhATFCm (ORCPT ); Wed, 20 Jan 2021 00:02:42 -0500 Received: from localhost (localhost [127.0.0.1]) by mail.namei.org (Postfix) with ESMTPS id 964A8751; Wed, 20 Jan 2021 05:01:13 +0000 (UTC) Date: Wed, 20 Jan 2021 16:01:13 +1100 (AEDT) From: James Morris To: Suren Baghdasaryan cc: Andrew Morton , jannh@google.com, Kees Cook , jeffv@google.com, minchan@kernel.org, mhocko@suse.com, shakeelb@google.com, rientjes@google.com, edgararriaga@google.com, timmurray@google.com, linux-mm@kvack.org, selinux@vger.kernel.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-team@android.com, linux-security-module@vger.kernel.org Subject: Re: [PATCH v2 1/1] mm/madvise: replace ptrace attach requirement for process_madvise In-Reply-To: <20210111170622.2613577-1-surenb@google.com> Message-ID: References: <20210111170622.2613577-1-surenb@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 11 Jan 2021, Suren Baghdasaryan wrote: > Replace PTRACE_MODE_ATTACH with a combination of PTRACE_MODE_READ > and CAP_SYS_NICE. PTRACE_MODE_READ to prevent leaking ASLR metadata > and CAP_SYS_NICE for influencing process performance. Almost missed these -- please cc the LSM mailing list when modifying capabilities or other LSM-related things. -- James Morris