From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 82FC0C54EBD for ; Mon, 9 Jan 2023 22:57:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237605AbjAIW5V (ORCPT ); Mon, 9 Jan 2023 17:57:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38636 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229616AbjAIW5O (ORCPT ); Mon, 9 Jan 2023 17:57:14 -0500 Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2001:67c:2178:6::1d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EA610EE1F for ; Mon, 9 Jan 2023 14:57:13 -0800 (PST) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 7A3E35CF29; Mon, 9 Jan 2023 22:57:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1673305032; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=+Mo2QOFkARd7xfUhVpKSlF2eFCN0OcEj5g2HeY9vdkM=; b=h/Dzcdvo8qi68HPyGHdzT7j48QBbCimyi4m2hGNUeAW4uV4UqVJiU/DtAa/BLF2Oo8q2K4 DzuP8ZTlDa8GMqFDtmy7lpyNkI8MmsegjgkMCOLarU1JoqjtM1CjHWWK05E56Hv6DakFci VawH1kiEallw7kWR27QNENKU2xZuIsg= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1673305032; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=+Mo2QOFkARd7xfUhVpKSlF2eFCN0OcEj5g2HeY9vdkM=; b=GnJIA1659/PuNcNbfugZp+PuDP0guzpib1GnpQ1prLUOfFDcRdNoyUxq8DABfQf57VU54l h3YUR1l3ZFhWiKDQ== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 4DE0713583; 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 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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): >