From: "Chen, Rong A" <rong.a.chen@intel.com>
To: Nathan Chancellor <nathan@kernel.org>, kernel test robot <lkp@intel.com>
Cc: Kees Cook <keescook@chromium.org>,
llvm@lists.linux.dev, kbuild-all@lists.01.org,
linux-kernel@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>,
Nick Desaulniers <ndesaulniers@google.com>,
Masahiro Yamada <masahiroy@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Linux Memory Management List <linux-mm@kvack.org>
Subject: Re: [kbuild-all] Re: powerpc-linux-objdump: Warning: Unrecognized form: 0x23
Date: Thu, 1 Sep 2022 09:15:58 +0800 [thread overview]
Message-ID: <b0b8fecd-4041-d04e-9a11-2c7947e5d5a0@intel.com> (raw)
In-Reply-To: <Yw+A+0BY26l0AC5j@dev-arch.thelio-3990X>
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 <lkp@intel.com>
>>
>> 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
Best Regards,
Rong Chen
> CONFIG_DEBUG_INFO_DWARF5 requires 2.35.2, it seems like it might be
> worth trying to extend those dependencies to
> CONFIG_DEBUG_INFO_DWARF_TOOLCHAIN_DEFAULT to avoid issues like this,
> especially in lieu of Nick's series here, which is already codifying the
> implicit default DWARF version of the compiler.
>
> https://lore.kernel.org/20220826181035.859042-1-ndesaulniers@google.com/
>
> Cheers,
> Nathan
> _______________________________________________
> kbuild-all mailing list -- kbuild-all@lists.01.org
> To unsubscribe send an email to kbuild-all-leave@lists.01.org
>
next prev parent reply other threads:[~2022-09-01 1:16 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-31 6:52 kernel test robot
2022-08-31 15:40 ` Nathan Chancellor
2022-09-01 1:15 ` Chen, Rong A [this message]
2022-09-01 2:03 ` [kbuild-all] " Nathan Chancellor
2022-09-01 4:59 ` Chen, Rong A
2022-09-01 5:45 ` Christophe Leroy
2022-09-01 5:52 ` Chen, Rong A
2022-09-01 16:55 ` Nathan Chancellor
2022-09-01 17:04 ` Nick Desaulniers
2022-09-02 0:54 ` Chen, Rong A
2022-09-02 1:01 ` Philip Li
2022-09-01 5:44 ` Christophe Leroy
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