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[2620:137:e000::1:18]) by mx.google.com with ESMTPS id r9-20020adfbb09000000b0020c5dc02c97si3475021wrg.258.2022.05.13.17.02.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 May 2022 17:02:31 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18; Authentication-Results: mx.google.com; dkim=pass header.i=@alien8.de header.s=dkim header.b="P/4fmKKW"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alien8.de Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 3DC6B20956D; Fri, 13 May 2022 16:04:45 -0700 (PDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1382770AbiEMRMo (ORCPT + 99 others); Fri, 13 May 2022 13:12:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38976 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1382339AbiEMRMn (ORCPT ); Fri, 13 May 2022 13:12:43 -0400 Received: from mail.skyhub.de (mail.skyhub.de [IPv6:2a01:4f8:190:11c2::b:1457]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D6EA049F11 for ; Fri, 13 May 2022 10:12:42 -0700 (PDT) Received: from zn.tnic (p5de8eeb4.dip0.t-ipconnect.de [93.232.238.180]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 4C3101EC071C; Fri, 13 May 2022 19:12:37 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1652461957; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=anRexSde4N3xzuM4Gc8q5syTIt1lzd8N4liRy6D1N/E=; b=P/4fmKKWDTBSM+0OtvF/AiA7odlqnnvgLvGfXqFjEWhXvFDtVMOtSx+2oaRGTK4DDc8H6O NS5adJpNFiIrTvbhsk/bClbQqMWMkyA7eLWp/7Q/ePtcrRGTMTsUdpuD4dCB9syPqHAAd0 DB4wWamblKdNE6SweJnUo5vR4A6Tza0= Date: Fri, 13 May 2022 19:12:38 +0200 From: Borislav Petkov To: kernel test robot Cc: Linus Torvalds , kernel test robot , Eric Biggers , Thomas Gleixner , Ingo Molnar , Dave Hansen , Rasmus Villemoes , Sean Christopherson , Naresh Kamboju , LKML , lkp@lists.01.org, kernel test robot , the arch/x86 maintainers Subject: Re: [x86/uaccess] 9c5743dff4: WARNING:at_arch/x86/mm/extable.c:#ex_handler_fprestore Message-ID: References: <20220513085455.GB21013@xsang-OptiPlex-9020> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RDNS_NONE,SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, May 13, 2022 at 09:52:08AM -0700, Linus Torvalds wrote: > On Fri, May 13, 2022 at 1:55 AM kernel test robot wrote: > > > > FYI, we noticed the following commit (built with gcc-11): commit > > 9c5743dff415 ("x86/uaccess: fix code generation in put_user()") > > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master Err, is this seriously a report for a 5.9-something kernel? [ 266.828722][ T1] CPU: 0 PID: 1 Comm: init Not tainted 5.9.0-13419-g9c5743dff415 #1 > > > > in testcase: boot > > > > on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G > > > > caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace): Can you reproduce the same with the latest Linus master or tip/master or something current...? Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette