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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8CFE6C433F5 for ; Thu, 24 Feb 2022 09:45:22 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 251CE8D0002; Thu, 24 Feb 2022 04:45:22 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 1DA7D8D0001; Thu, 24 Feb 2022 04:45:22 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 07D238D0002; Thu, 24 Feb 2022 04:45:22 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0150.hostedemail.com [216.40.44.150]) by kanga.kvack.org (Postfix) with ESMTP id E718F8D0001 for ; Thu, 24 Feb 2022 04:45:21 -0500 (EST) Received: from smtpin17.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 853C8181CAC73 for ; Thu, 24 Feb 2022 09:45:21 +0000 (UTC) X-FDA: 79177190442.17.DBF08D6 Received: from mail-ej1-f50.google.com (mail-ej1-f50.google.com [209.85.218.50]) by imf04.hostedemail.com (Postfix) with ESMTP id 017F840006 for ; Thu, 24 Feb 2022 09:45:20 +0000 (UTC) Received: by mail-ej1-f50.google.com with SMTP id p14so3022938ejf.11 for ; Thu, 24 Feb 2022 01:45:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=2bq1GD0jy9T+yRRISppNcCl5IjRO7UwAkdMEPjekUD4=; b=CJKeWGRH84suOvoSjt58KDLWmFmX/vxqR72SQml+AHqPcLbBss5jDWcTr6AM7P9YG+ +cFxHfRFn49+jra/Fbe23fQ3ItjFw2uQJ3/E1+MqOBNZlQY0H0YimN4jC61KyqZ/bhFq Fr14TUI2j5sG4M28ss3+5HsL6dNvfyY7xaoaBUFq6yCSKOpT9mSA4Y0XGrsGI8lcqauD RKJEoylC8Emm3Ik6KTnHSdqwYQADVP0OKq5dDEd31LbIAyudOMbcaNqJAIMhmSz3Xbzf eFnI+Zq53aXN7hJfLXs1zuCYwNzu/AqctUqlFgW8StCHzzmSbMw0upXx/DworrBaBqAG wy7w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=2bq1GD0jy9T+yRRISppNcCl5IjRO7UwAkdMEPjekUD4=; b=UKS5GdzNtUWXU8+5Mc8dw7Bsc/2UJWL8SrA1kxBpKMKyC5rlaYA+2pXXhL30mulnUo IJfEPySJUkqGMWsrQ/4P+5T7ld7t8/0QCEGvBqnOvNaCPsAt6iYNOZVpgeUQyls7wRJk 210i54nLx2azUocmTdYe9FgOMbv9P4oH3vpvd2rC96bOEPk+HYwr2pU4MMgjBNBKOkmY jitfjGYAABcMJlEBHTz80JNvmbmC5v3qdWeWy3ZNahInm8X0KCzhNgrPf3twKymWaC9k o487UcX43Q7UALqtS/sU7COkHc66SCL0CCxl8XbePvW8+tyzLTF57RBw45zfPwiXF5tk N1xQ== X-Gm-Message-State: AOAM5339lSjttlZQgQkQGbk68UHIoWEXX6sIsI/eDirxRyQnZGrB1r50 kFC3ujEPzrjSIWJz6CCpMg== X-Google-Smtp-Source: ABdhPJyI9AsrwzY4egVw/KkmAwv6B63e+6k98CRk1XQ8KI7+7LLVavtr+Ld0EyoA9Rue9FEoV6rTMw== X-Received: by 2002:a17:906:dfe9:b0:6cf:7f1d:dddd with SMTP id lc9-20020a170906dfe900b006cf7f1dddddmr1547256ejc.621.1645695919492; Thu, 24 Feb 2022 01:45:19 -0800 (PST) Received: from localhost.localdomain ([46.53.251.11]) by smtp.gmail.com with ESMTPSA id s6sm1075471ejc.206.2022.02.24.01.45.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 24 Feb 2022 01:45:19 -0800 (PST) Date: Thu, 24 Feb 2022 12:45:17 +0300 From: Alexey Dobriyan To: Kees Cook Cc: Eric Biederman , David Gow , Magnus =?utf-8?B?R3Jvw58=?= , kunit-dev@googlegroups.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-hardening@vger.kernel.org Subject: Re: [PATCH] binfmt_elf: Introduce KUnit test Message-ID: References: <20220224054332.1852813-1-keescook@chromium.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20220224054332.1852813-1-keescook@chromium.org> Authentication-Results: imf04.hostedemail.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=CJKeWGRH; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (imf04.hostedemail.com: domain of adobriyan@gmail.com designates 209.85.218.50 as permitted sender) smtp.mailfrom=adobriyan@gmail.com X-Rspam-User: X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 017F840006 X-Stat-Signature: uo6tcchsbgcq8hm8mik1pfpr1b94e9x3 X-HE-Tag: 1645695920-870197 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, Feb 23, 2022 at 09:43:32PM -0800, Kees Cook wrote: > Adds simple KUnit test for some binfmt_elf internals: specifically a > regression test for the problem fixed by commit 8904d9cd90ee ("ELF: > fix overflow in total mapping size calculation"). This can be tested by small 2 segment program run from userspace. Make 2 segments, swap them, and see executable rejected because mmap gets too big an area. PT_ALEXEY