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[71.184.117.43]) by smtp.gmail.com with ESMTPSA id d67sm8223865qkf.76.2019.02.07.05.27.48 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 07 Feb 2019 05:27:48 -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: From: Qian Cai Message-ID: <89b343eb-16ff-1020-2efc-55ca58fafae7@lca.pw> Date: Thu, 7 Feb 2019 08:27:47 -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=0.000110, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 2/7/19 7:58 AM, Andrey Konovalov wrote: > On Thu, Feb 7, 2019 at 5:04 AM Qian Cai wrote: >> >> The kernel was compiled by clang-7.0.1 on a ThunderX2 server, and it fails to >> boot. CONFIG_KASAN_GENERIC=y works fine. > > Hi Qian, > > Could you share the kernel commit id and .config that you use? v5.0-rc5 https://git.sr.ht/~cai/linux-debug/tree/master/config # cat /proc/cmdline page_poison=on crashkernel=768M earlycon page_owner=on numa_balancing=enable slub_debug=-