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[71.184.117.43]) by smtp.gmail.com with ESMTPSA id g3sm457393qkc.54.2019.02.07.16.30.11 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 07 Feb 2019 16:30:11 -0800 (PST) Subject: Re: CONFIG_KASAN_SW_TAGS=y NULL pointer dereference at freelist_dereference() To: Andrey Konovalov Cc: Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , kasan-dev , Linux ARM , Linux-MM References: <89b343eb-16ff-1020-2efc-55ca58fafae7@lca.pw> From: Qian Cai Message-ID: Date: Thu, 7 Feb 2019 19:30:10 -0500 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:60.0) Gecko/20100101 Thunderbird/60.3.3 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit 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 2/7/19 10:34 AM, Andrey Konovalov wrote: > Reproduced, looks like a conflict with CONFIG_SLAB_FREELIST_HARDENED. > Could you try the attached patch? > You nailed it!