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 X-Spam-Level: X-Spam-Status: No, score=-8.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A208AC433E2 for ; Tue, 15 Sep 2020 18:49:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5DA5A20B1F for ; Tue, 15 Sep 2020 18:49:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alien8.de header.i=@alien8.de header.b="YcyLUqDx" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727580AbgIOStt (ORCPT ); Tue, 15 Sep 2020 14:49:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33546 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727812AbgIORZO (ORCPT ); Tue, 15 Sep 2020 13:25:14 -0400 Received: from mail.skyhub.de (mail.skyhub.de [IPv6:2a01:4f8:190:11c2::b:1457]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C5C22C06178A for ; Tue, 15 Sep 2020 10:22:55 -0700 (PDT) Received: from zn.tnic (p200300ec2f0e42006096e946d741c4e4.dip0.t-ipconnect.de [IPv6:2003:ec:2f0e:4200:6096:e946:d741:c4e4]) (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 6CD321EC0268; Tue, 15 Sep 2020 19:21:53 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1600190513; 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=JO/BJln6+VhiNncCauMkRlCcTkl9Kn6f84sTOpoazpg=; b=YcyLUqDxMPbtOgMA9A5nqkYPUS1MKbmMrWICT8LAHBhA7+QWojjLGDb9ZoGixwS6bSVb1q 2dJqfHErHJBosB3C5tF89YkTnIJoWdITggy3bcKuiCarola0d4ApkBtLdF0bfFqeIpCCLi wK0HysijJfK6c8qhW627xg8wVycblwE= Date: Tue, 15 Sep 2020 19:21:52 +0200 From: Borislav Petkov To: Josh Poimboeuf Cc: Nick Desaulniers , Rong Chen , kernel test robot , "Li, Philip" , x86-ml , linux-kernel@vger.kernel.org Subject: Re: [tip:x86/seves] BUILD SUCCESS WITH WARNING e6eb15c9ba3165698488ae5c34920eea20eaa38e Message-ID: <20200915172152.GR14436@zn.tnic> References: <5f60c4e0.Ru0MTgSE9A7mqhpG%lkp@intel.com> <20200915135519.GJ14436@zn.tnic> <20200915141816.GC28738@shao2-debian> <20200915160554.GN14436@zn.tnic> <20200915170248.gcv54pvyckteyhk3@treble> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20200915170248.gcv54pvyckteyhk3@treble> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Sep 15, 2020 at 12:02:48PM -0500, Josh Poimboeuf wrote: > If somebody can share the .o file, I can take a look. If only I could reproduce... So I built: /home/share/src/llvm/tc-build/install/bin/clang-12 --version ClangBuiltLinux clang version 12.0.0 (https://github.com/llvm/llvm-project 74a9c6d7e1c49cd0e3a8e8072b8aa03f7a84caff) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /home/share/src/llvm/tc-build/install/bin and I don't trigger that warning even with that compiler. What I do get is a lot of those pairs: init/calibrate.o: warning: objtool: asan.module_ctor()+0xc: call without frame pointer save/setup init/calibrate.o: warning: objtool: asan.module_dtor()+0xc: call without frame pointer save/setup init/version.o: warning: objtool: asan.module_ctor()+0xc: call without frame pointer save/setup init/version.o: warning: objtool: asan.module_dtor()+0xc: call without frame pointer save/setup certs/system_keyring.o: warning: objtool: asan.module_ctor()+0xc: call without frame pointer save/setup certs/system_keyring.o: warning: objtool: asan.module_dtor()+0xc: call without frame pointer save/setup ... and a link fail at the end. ld: arch/x86/events/core.o: in function `events_sysfs_show': core.c:(.text+0x469b): undefined reference to `stpcpy' ld: arch/x86/events/core.o: in function `events_ht_sysfs_show': core.c:(.text+0x46f7): undefined reference to `stpcpy' ld: drivers/tty/tty_io.o: in function `alloc_tty_struct': tty_io.c:(.text+0x2da5): undefined reference to `stpcpy' ld: drivers/tty/tty_io.o: in function `tty_register_device_attr': tty_io.c:(.text+0x6a09): undefined reference to `stpcpy' ld: drivers/tty/tty_io.o: in function `show_cons_active': tty_io.c:(.text+0xa819): undefined reference to `stpcpy' ld: drivers/scsi/scsi_transport_sas.o:scsi_transport_sas.c:(.text+0x6139): more undefined references to `stpcpy' follow make: *** [Makefile:1166: vmlinux] Error 1 I'm thinking clang12 is too unstable to take it seriously... -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette