Re: [kbuild-all] Re: powerpc-linux-objdump: Warning: Unrecognized form: 0x23

[Chen, Rong A]

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@xxxxxxxxx/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@xxxxxxxxx>
> > > >
> > > > 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