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[2001:14bb:52:7be:f0bf:dd2d:f008:5213]) by smtp.gmail.com with ESMTPSA id e201-v6sm3314921lfg.42.2018.10.29.11.24.44 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 29 Oct 2018 11:24:45 -0700 (PDT) Subject: Re: [PATCH 09/17] prmem: hardened usercopy To: crecklin@redhat.com, Mimi Zohar , Kees Cook , Matthew Wilcox , Dave Chinner , James Morris , Michal Hocko , kernel-hardening@lists.openwall.com, linux-integrity@vger.kernel.org, linux-security-module@vger.kernel.org Cc: igor.stoppa@huawei.com, Dave Hansen , Jonathan Corbet , Laura Abbott , linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <20181023213504.28905-1-igor.stoppa@huawei.com> <20181023213504.28905-10-igor.stoppa@huawei.com> From: Igor Stoppa Message-ID: Date: Mon, 29 Oct 2018 20:24:43 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 29/10/2018 11:45, Chris von Recklinghausen wrote: [...] > Could you add code somewhere (lkdtm driver if possible) to demonstrate > the issue and verify the code change? Sure. Eventually, I'd like to add test cases for each functionality. I didn't do it right away for those parts which are either not immediately needed for the main functionality or I'm still not confident enough that they won't change radically. -- igor