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31 Aug 2022 21:59:57 -0700 X-IronPort-AV: E=Sophos;i="5.93,280,1654585200"; d="scan'208";a="673676377" Received: from rongch2-mobl.ccr.corp.intel.com (HELO [10.254.213.173]) ([10.254.213.173]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Aug 2022 21:59:54 -0700 Subject: Re: [kbuild-all] Re: powerpc-linux-objdump: Warning: Unrecognized form: 0x23 To: Nathan Chancellor Cc: kernel test robot , Kees Cook , llvm@lists.linux.dev, kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Arnd Bergmann , Nick Desaulniers , Masahiro Yamada , Andrew Morton , Linux Memory Management List References: <202208311414.4OPuYS9K-lkp@intel.com> From: "Chen, Rong A" Message-ID: <8d2c3aef-aa4f-1f4d-dc89-622554ffda31@intel.com> Date: Thu, 1 Sep 2022 12:59:52 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Firefox/78.0 Thunderbird/78.12.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1662008400; a=rsa-sha256; cv=none; b=6zwbGIAj/YHxmayg3ucmD9qpeaJUatYCu1EKYlUjtLwsjzZ1H3d2QzBN35pkMJnJGmp9We g7QUHBuO3sYUlC6eWIUUMS4kDfztO6M+rLp4r5G7545GwfW3/5lFCD9TBFsevL4Gj+opX9 UR36MAiW3VisLPntSFTOS5K9Hs2CUBQ= ARC-Authentication-Results: i=1; imf23.hostedemail.com; dkim=none ("invalid DKIM record") header.d=intel.com header.s=Intel header.b=bRai+fLk; dmarc=pass (policy=none) header.from=intel.com; spf=pass (imf23.hostedemail.com: domain of rong.a.chen@intel.com designates 192.55.52.120 as permitted sender) smtp.mailfrom=rong.a.chen@intel.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1662008400; h=from:from:sender: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:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=jfnRrlj+kILyo2lVFrLIu1jKtzqzadKqGjy1XQiQZQ4=; b=6gsuljWNCBO+AybYEiSvg38lizn3fSVmFX0E08pZ4Si34pPi3zkORQ6jCqYhrgxHZ5Bt71 ufHxyamZ/wwd1lT1U6mK7b+JkrxFiVtAlZ7NlPl4bDFPLkUBJ3/75e29YhdDoBohaZQLl2 dBKrRaXR5t3mSZTZRBWoxv0JXAZsHFY= X-Rspam-User: Authentication-Results: imf23.hostedemail.com; dkim=none ("invalid DKIM record") header.d=intel.com header.s=Intel header.b=bRai+fLk; dmarc=pass (policy=none) header.from=intel.com; spf=pass (imf23.hostedemail.com: domain of rong.a.chen@intel.com designates 192.55.52.120 as permitted sender) smtp.mailfrom=rong.a.chen@intel.com X-Rspamd-Server: rspam07 X-Stat-Signature: hyjptu1s3isyseo6c85k8sypnnzxkphs X-Rspamd-Queue-Id: 05C9714004B X-HE-Tag: 1662008398-251489 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 9/1/2022 10:03 AM, Nathan Chancellor wrote: > Hi Rong, > > On Thu, Sep 01, 2022 at 09:15:58AM +0800, Chen, Rong A wrote: >> >> >> On 8/31/2022 11:40 PM, Nathan Chancellor wrote: >>> On Wed, Aug 31, 2022 at 02:52:36PM +0800, kernel test robot wrote: >>>> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master >>>> head: dcf8e5633e2e69ad60b730ab5905608b756a032f >>>> commit: f9b3cd24578401e7a392974b3353277286e49cee Kconfig.debug: make DEBUG_INFO selectable from a choice >>>> date: 5 months ago >>>> config: powerpc-buildonly-randconfig-r003-20220830 (https://download.01.org/0day-ci/archive/20220831/202208311414.4OPuYS9K-lkp@intel.com/config) >>>> compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project c7df82e4693c19e3fd2e25c83eb04d9deb7b7b59) >>>> reproduce (this is a W=1 build): >>>> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross >>>> chmod +x ~/bin/make.cross >>>> # install powerpc cross compiling tool for clang build >>>> # apt-get install binutils-powerpc-linux-gnu >>>> # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f9b3cd24578401e7a392974b3353277286e49cee >>>> git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git >>>> git fetch --no-tags linus master >>>> git checkout f9b3cd24578401e7a392974b3353277286e49cee >>>> # save the config file >>>> mkdir build_dir && cp config build_dir/.config >>>> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash >>>> >>>> If you fix the issue, kindly add following tag where applicable >>>> Reported-by: kernel test robot >>>> >>>> All warnings (new ones prefixed by >>): >>>> >>>>>> powerpc-linux-objdump: Warning: Unrecognized form: 0x23 >>> >>> Given this is clang 16.0.0 with >>> CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT=y, which uses DWARF5 by >>> default instead of DWARF4, it looks like older binutils not >>> understanding DWARF5. What version of binutils is being used by the bot? >> >> Hi Nathan, >> >> We're using binutils v2.38.90.20220713-2 >> >> ||/ Name Version Architecture Description >> +++-==============-==================-============-========================================== >> ii binutils 2.38.90.20220713-2 amd64 GNU assembler, linker and binary utilities > > Thanks for chiming in! This looks like the output of 'dpkg -l', right? I Hi Nathan, oh, yes, I misunderstood, it's not related to this package. > noticed on second glance that the tuple for the objdump warning above is > 'powerpc-linux-', which leads me to believe that a kernel.org toolchain > (or a self compiled one) is being used. I would expect the tuple to be > 'powerpc-linux-gnu-' if Debian's package was being used. Is that > possible? you are right, we used a self-compiled toolchain, we'll try the binutils from debian package. Best Regards, Rong Chen > > Cheers, > Nathan >