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([2001:470:67:5b9:5dec:e971:4cde:a128]) by smtp.gmail.com with ESMTPSA id h3sm1056943pjz.23.2020.07.08.22.16.27 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 08 Jul 2020 22:16:28 -0700 (PDT) Subject: Re: BUG: KASAN: global-out-of-bounds in is_affected_midr_range_list on arm64 To: Naresh Kamboju , open list , LTP List , linux-arm-kernel@lists.infradead.org Cc: Viresh Kumar , Basil Eljuse , Arnd Bergmann , catalin.marinas@arm.com, Will Deacon , james.morse@arm.com, Bjorn Andersson , saiprakash.ranjan@codeaurora.org, steven.price@arm.com, suzuki.poulose@arm.com, Mark Rutland , ascull@google.com, Marc Zyngier References: From: Florian Fainelli Message-ID: <559c5a04-a2ab-bfa2-c26e-4fbbf6d273ed@gmail.com> Date: Wed, 8 Jul 2020 22:16:26 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Firefox/68.0 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 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 7/8/2020 9:36 PM, Naresh Kamboju wrote: > While running LTP cpuhotplug test on mainline 5.8.0-rc4 the kernel BUG noticed > on arm64 Juno-r2 KASAN config enabled kernel. > > steps to reproduce: > - boot KASAN enabled Juno-r2 device > - cd /opt/ltp > - ./runltp -f cpuhotplug > > metadata: > git branch: master > git repo: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git > git commit: 63e1968a2c87e9461e9694a96991935116e0cec7 > kernel-config: > https://builds.tuxbuild.com/wc75HkrGrWgQCdI-l_1jUw/kernel.config > vmlinux: https://builds.tuxbuild.com/wc75HkrGrWgQCdI-l_1jUw/vmlinux.xz > system.map: https://builds.tuxbuild.com/wc75HkrGrWgQCdI-l_1jUw/System.map > > Test log: > Name: cpuhotplug02 > Date: Thu Jul 9 00:09:24 UTC 2020 > Desc: What happens to a process when its CPU is offlined? > Just sent a tentative fix: https://lore.kernel.org/linux-arm-kernel/20200709051345.14544-1-f.fainelli@gmail.com/ -- Florian