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Mon, 9 Jan 2023 22:57:12 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id XrfwEcibvGMBJwAAMHmgww (envelope-from ); Mon, 09 Jan 2023 22:57:12 +0000 Message-ID: <654982ed-0ccd-8285-65b2-dc05f8b5bd27@suse.cz> Date: Mon, 9 Jan 2023 23:57:12 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.6.1 Subject: Re: [linus:master] [mm, slub] fa9b88e459: kernel_BUG_at_include/linux/page-flags.h Content-Language: en-US To: kernel test robot , kernel test robot Cc: oe-lkp@lists.linux.dev, lkp@intel.com, Mike Rapoport , Christoph Lameter , Hyeonggon Yoo <42.hyeyoo@gmail.com>, linux-kernel@vger.kernel.org, linux-mm@kvack.org References: <202301081605.a2503af7-yujie.liu@intel.com> From: Vlastimil Babka In-Reply-To: <202301081605.a2503af7-yujie.liu@intel.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 345C11C0008 X-Stat-Signature: swerspqeubmjdc1hszd45bto4fwbcczx X-HE-Tag: 1673305033-168995 X-HE-Meta: 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 rg1zbAHS GN3UlyOF9OeedG1iYfVZwxvTUfJgVsp3XoUgpoNEj8VUbmuyQX+OXOsaTfw== 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 1/8/23 17:28, kernel test robot wrote: > Greeting, > > FYI, we noticed kernel_BUG_at_include/linux/page-flags.h due to commit (built with gcc-11): > > commit: fa9b88e459d710cadf3b01e8a64eda00cc91cdd6 ("mm, slub: refactor free debug processing") > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master Thanks for trying to bisect the root cause to earlier commit than 0af8489b0216f, as we discussed. Here I strongly suspect it's also earlier than this commit. Because the code changed here is only used with SLUB_DEBUG, which is not enabled in your config. Only later in 0af8489b0216f it becomes used also by SLUB_TINY. > [test failed on linux-next/master 469a89fd3bb73bb2eea628da2b3e0f695f80b7ce] > > in testcase: boot > > on test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 4G > > caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): >