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 5527BC433EF for ; Fri, 13 May 2022 17:12:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1382771AbiEMRMp (ORCPT ); Fri, 13 May 2022 13:12:45 -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: 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