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([2600:1700:e321:62f0:329c:23ff:fee3:9d7c]) by smtp.gmail.com with ESMTPSA id t187-20020aca5fc4000000b00325cda1ffb4sm188141oib.51.2022.05.19.14.41.56 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 19 May 2022 14:41:57 -0700 (PDT) Message-ID: <28f3958f-dd25-cb1a-0a4c-040e7706ffc7@roeck-us.net> Date: Thu, 19 May 2022 14:41:55 -0700 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.8.1 Content-Language: en-US To: Liam Howlett Cc: Heiko Carstens , Sven Schnelle , Andrew Morton , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" References: <20220428172040.GA3623323@roeck-us.net> <20220513165955.mkg5wvfi4dwpzoer@revolver> <20220519143541.dfzgoubmkboc6kk4@revolver> From: Guenter Roeck Subject: Re: [PATCH] mapletree-vs-khugepaged In-Reply-To: <20220519143541.dfzgoubmkboc6kk4@revolver> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 8437440010 X-Stat-Signature: tocrb8rnh4mo4caprwwfu595z4eex4md Authentication-Results: imf17.hostedemail.com; dkim=pass header.d=gmail.com header.s=20210112 header.b=X1FGonc0; spf=pass (imf17.hostedemail.com: domain of groeck7@gmail.com designates 209.85.210.51 as permitted sender) smtp.mailfrom=groeck7@gmail.com; dmarc=none X-HE-Tag: 1652996493-836027 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 5/19/22 07:35, Liam Howlett wrote: > * Guenter Roeck [220517 10:32]: > > ... >> >> Another bisect result, boot failures with nommu targets (arm:mps2-an385, >> m68k:mcf5208evb). Bisect log is the same for both. > ... >> # first bad commit: [bd773a78705fb58eeadd80e5b31739df4c83c559] nommu: remove uses of VMA linked list > > I cannot reproduce this on my side, even with that specific commit. Can > you point me to the failure log, config file, etc? Do you still see > this with the fixes I've sent recently? > This was in linux-next; most recently with next-20220517. I don't know if that was up-to-date with your patches. The problem seems to be memory allocation failures. A sample log is at https://kerneltests.org/builders/qemu-m68k-next/builds/1065/steps/qemubuildcommand/logs/stdio The log history at https://kerneltests.org/builders/qemu-m68k-next?numbuilds=30 will give you a variety of logs. The configuration is derived from m5208evb_defconfig, with initrd and command line embedded in the image. You can see the detailed configuration updates at https://github.com/groeck/linux-build-test/blob/master/rootfs/m68k/run-qemu-m68k.sh Qemu command line is qemu-system-m68k -M mcf5208evb -kernel vmlinux \ -cpu m5208 -no-reboot -nographic -monitor none -append "rdinit=/sbin/init console=ttyS0,115200" with initrd from https://github.com/groeck/linux-build-test/blob/master/rootfs/m68k/rootfs-5208.cpio.gz I use qemu v6.2, but any recent qemu version should work. Hope this helps, Guenter