From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.12]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3F7673E47B; Wed, 4 Jun 2025 17:00:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.12 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749056437; cv=none; b=XYIpfyTRgOCMCTAMVr6hYEVlny0imO4K4J/D0NxqTmnc87mZGsn472QadSYgnznsTIeNB9BERifKbip+RAI5AydaQ5/pCWGIPHRXvZZBY5Z9JUvGdlBkTTIJ73dfBIfWAniU3xnPBYjdQ0ydxU2kRnHiSdHKlUR0S5JkN5ykVQg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749056437; c=relaxed/simple; bh=auvs4Tx6ETmc5Q9TTJca+IVOL/0bx9oSSwGfQ6lDcsw=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition; b=J7Dk8wzBx+E1mAlxOno5Hkpgu9yZc6iBPPtxSqdkVDM11NeZGiiRtyk5UjsNSZ51YeuArsihL923abIH0FDHVfnNcqHfhKPQ7o5qoV0DQmElmNcJ5keammV4in/L9P+EhGXB/MyyJCNRCRmIIzjZjZ6D09omu5LfVFAiAs6Ay8o= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=MouUGLFO; arc=none smtp.client-ip=198.175.65.12 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="MouUGLFO" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1749056436; x=1780592436; h=date:from:to:cc:subject:message-id:mime-version; bh=auvs4Tx6ETmc5Q9TTJca+IVOL/0bx9oSSwGfQ6lDcsw=; b=MouUGLFO/WIEdXLOwnvO9GT48EhejLXoIZlb7EnCM/utbUqGyZRZ0qzh yrEqLmgAbVXt/SUHbS5F9DQz0rCXT6G+Rqo4DHo997AmR18ghj91VOYJW MqA09aQIfjOyrtudgKllSaZi5NrnEcrSJ1sDYz+fAyGvB7WHpbGD6r3gu GhhWrVWPRjtvra7s4hixPIix6hY5QXEBiPB26/R1fi81iAilXVB1vR9Te yEeJJbjcD/M5FleyD0i3JqI7iFzus2vytO9kiwifvgyKqol7VAGN3sW/Z VWjSA6RtDvG2YSC5g5ynHj/uOnjDsTJ7605XpqB+5ZN24jHimo1cDf0t5 g==; X-CSE-ConnectionGUID: Fg7qSkbnSHGHm1kwtTiV0A== X-CSE-MsgGUID: USJxuVYXRhuT4QXctSotQQ== X-IronPort-AV: E=McAfee;i="6800,10657,11454"; a="62540908" X-IronPort-AV: E=Sophos;i="6.16,209,1744095600"; d="scan'208";a="62540908" Received: from fmviesa006.fm.intel.com ([10.60.135.146]) by orvoesa104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Jun 2025 09:59:16 -0700 X-CSE-ConnectionGUID: djJ2TNIAReGfVSq7rrH3Nw== X-CSE-MsgGUID: 8o9+lSOVQtWTk1ROwhGjZg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.16,209,1744095600"; d="scan'208";a="145120552" Received: from lkp-server01.sh.intel.com (HELO e8142ee1dce2) ([10.239.97.150]) by fmviesa006.fm.intel.com with ESMTP; 04 Jun 2025 09:59:14 -0700 Received: from kbuild by e8142ee1dce2 with local (Exim 4.96) (envelope-from ) id 1uMrSK-0003LT-2c; Wed, 04 Jun 2025 16:59:12 +0000 Date: Thu, 5 Jun 2025 00:58:13 +0800 From: kernel test robot To: Benjamin Berg Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, Johannes Berg Subject: [uml:next 24/27] arch/x86/um/tls_32.c:28:6: warning: variable 'cpu' set but not used Message-ID: <202506050008.AwXLNxQX-lkp@intel.com> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline tree: https://git.kernel.org/pub/scm/linux/kernel/git/uml/linux next head: 942349413a49670e8bed246e2185fd3a053227be commit: 406d17c6c370a33cfb54067d9e205305293d4604 [24/27] um: Implement kernel side of SECCOMP based process handling config: um-randconfig-002-20250604 (https://download.01.org/0day-ci/archive/20250605/202506050008.AwXLNxQX-lkp@intel.com/config) compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project f819f46284f2a79790038e1f6649172789734ae8) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250605/202506050008.AwXLNxQX-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202506050008.AwXLNxQX-lkp@intel.com/ All warnings (new ones prefixed by >>): >> arch/x86/um/tls_32.c:28:6: warning: variable 'cpu' set but not used [-Wunused-but-set-variable] 28 | u32 cpu; | ^ arch/x86/um/tls_32.c:129:19: warning: unused function 'needs_TLS_update' [-Wunused-function] 129 | static inline int needs_TLS_update(struct task_struct *task) | ^~~~~~~~~~~~~~~~ 2 warnings generated. vim +/cpu +28 arch/x86/um/tls_32.c 3feb88562d149f arch/um/sys-i386/tls.c Paolo 'Blaisorblade' Giarrusso 2006-03-31 24 406d17c6c370a3 arch/x86/um/tls_32.c Benjamin Berg 2025-06-02 25 static int do_set_thread_area(struct task_struct* task, struct user_desc *info) aa6758d4867cd0 arch/um/sys-i386/tls.c Paolo 'Blaisorblade' Giarrusso 2006-03-31 26 { aa6758d4867cd0 arch/um/sys-i386/tls.c Paolo 'Blaisorblade' Giarrusso 2006-03-31 27 int ret; aa6758d4867cd0 arch/um/sys-i386/tls.c Paolo 'Blaisorblade' Giarrusso 2006-03-31 @28 u32 cpu; aa6758d4867cd0 arch/um/sys-i386/tls.c Paolo 'Blaisorblade' Giarrusso 2006-03-31 29 406d17c6c370a3 arch/x86/um/tls_32.c Benjamin Berg 2025-06-02 30 if (info->entry_number < host_gdt_entry_tls_min || 406d17c6c370a3 arch/x86/um/tls_32.c Benjamin Berg 2025-06-02 31 info->entry_number >= host_gdt_entry_tls_min + GDT_ENTRY_TLS_ENTRIES) 406d17c6c370a3 arch/x86/um/tls_32.c Benjamin Berg 2025-06-02 32 return -EINVAL; 406d17c6c370a3 arch/x86/um/tls_32.c Benjamin Berg 2025-06-02 33 406d17c6c370a3 arch/x86/um/tls_32.c Benjamin Berg 2025-06-02 34 if (using_seccomp) { 406d17c6c370a3 arch/x86/um/tls_32.c Benjamin Berg 2025-06-02 35 int idx = info->entry_number - host_gdt_entry_tls_min; 406d17c6c370a3 arch/x86/um/tls_32.c Benjamin Berg 2025-06-02 36 struct stub_data *data = (void *)task->mm->context.id.stack; 406d17c6c370a3 arch/x86/um/tls_32.c Benjamin Berg 2025-06-02 37 406d17c6c370a3 arch/x86/um/tls_32.c Benjamin Berg 2025-06-02 38 data->arch_data.tls[idx] = *info; 406d17c6c370a3 arch/x86/um/tls_32.c Benjamin Berg 2025-06-02 39 data->arch_data.sync |= BIT(idx); 406d17c6c370a3 arch/x86/um/tls_32.c Benjamin Berg 2025-06-02 40 406d17c6c370a3 arch/x86/um/tls_32.c Benjamin Berg 2025-06-02 41 return 0; 406d17c6c370a3 arch/x86/um/tls_32.c Benjamin Berg 2025-06-02 42 } 406d17c6c370a3 arch/x86/um/tls_32.c Benjamin Berg 2025-06-02 43 aa6758d4867cd0 arch/um/sys-i386/tls.c Paolo 'Blaisorblade' Giarrusso 2006-03-31 44 cpu = get_cpu(); 406d17c6c370a3 arch/x86/um/tls_32.c Benjamin Berg 2025-06-02 45 ret = os_set_thread_area(info, task->mm->context.id.pid); aa6758d4867cd0 arch/um/sys-i386/tls.c Paolo 'Blaisorblade' Giarrusso 2006-03-31 46 put_cpu(); b8bec829c90d45 arch/um/sys-i386/tls.c Jeff Dike 2008-02-04 47 b8bec829c90d45 arch/um/sys-i386/tls.c Jeff Dike 2008-02-04 48 if (ret) b8bec829c90d45 arch/um/sys-i386/tls.c Jeff Dike 2008-02-04 49 printk(KERN_ERR "PTRACE_SET_THREAD_AREA failed, err = %d, " b8bec829c90d45 arch/um/sys-i386/tls.c Jeff Dike 2008-02-04 50 "index = %d\n", ret, info->entry_number); b8bec829c90d45 arch/um/sys-i386/tls.c Jeff Dike 2008-02-04 51 aa6758d4867cd0 arch/um/sys-i386/tls.c Paolo 'Blaisorblade' Giarrusso 2006-03-31 52 return ret; aa6758d4867cd0 arch/um/sys-i386/tls.c Paolo 'Blaisorblade' Giarrusso 2006-03-31 53 } aa6758d4867cd0 arch/um/sys-i386/tls.c Paolo 'Blaisorblade' Giarrusso 2006-03-31 54 :::::: The code at line 28 was first introduced by commit :::::: aa6758d4867cd07bd76105ade6177fe6148e559a [PATCH] uml: implement {get,set}_thread_area for i386 :::::: TO: Paolo 'Blaisorblade' Giarrusso :::::: CC: Linus Torvalds -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki