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[69.174.147.237]) by smtp.gmail.com with ESMTPSA id b12sm3411769ilq.53.2020.09.14.12.06.04 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 14 Sep 2020 12:06:05 -0700 (PDT) In-Reply-To: To: linux-arm-kernel@lists.infradead.org From: Derrick McKee Subject: Re: [PATCH 00/35] kasan: add hardware tag-based mode for arm64 Message-ID: <5282f36a-8df7-a20e-4d1d-41d1230ba11f@gmail.com> Date: Mon, 14 Sep 2020 15:06:04 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.12.0 MIME-Version: 1.0 Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200914_150609_554670_00D1AD30 X-CRM114-Status: GOOD ( 15.65 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: catalin.marinas@arm.com, Vincenzo Frascino , andreyknvl@google.com Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org > This patchset adds a new hardware tag-based mode to KASAN [1]. The new mode > is similar to the existing software tag-based KASAN, but relies on arm64 > Memory Tagging Extension (MTE) [2] to perform memory and pointer tagging > (instead of shadow memory and compiler instrumentation). What does one need to do to enable MTE in the kernel? I am trying to color some kernel module data, but when I call mte_get_mem_tag after calling mte_set_mem_tag_range, I get an invalid value. I have assured that mte_assign_mem_tag_range has been called in mte_set_mem_tag_range, so the initial sanity checks pass. Thanks. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel