linux-kernel - Re: [PATCH v4 1/2] Provide in-kernel headers for making it easy to extend the kernel

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Date:   Thu, 7 Mar 2019 13:54:51 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     Joel Fernandes <joel@...lfernandes.org>
Cc:     kbuild test robot <lkp@...el.com>, kbuild-all@...org,
        LKML <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Alexei Starovoitov <ast@...nel.org>,
        atish patra <atishp04@...il.com>,
        Daniel Colascione <dancol@...gle.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Guenter Roeck <groeck@...omium.org>,
        Jonathan Corbet <corbet@....net>,
        Karim Yaghmour <karim.yaghmour@...rsys.com>,
        Kees Cook <keescook@...omium.org>,
        "Cc: Android Kernel" <kernel-team@...roid.com>,
        "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>,
        linux-trace-devel@...r.kernel.org,
        Manoj Rao <linux@...ojrajarao.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Qais Yousef <qais.yousef@....com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Shuah Khan <shuah@...nel.org>, Yonghong Song <yhs@...com>
Subject: Re: [PATCH v4 1/2] Provide in-kernel headers for making it easy to
 extend the kernel

On Thu, Mar 7, 2019 at 5:31 AM Joel Fernandes <joel@...lfernandes.org> wrote:
>
>
> > On Sat, Mar 2, 2019 at 2:00 PM kbuild test robot <lkp@...el.com> wrote:
> > >
> > > Hi Joel,
> > >
> > > Thank you for the patch! Yet something to improve:
> > >
> > > [auto build test ERROR on linus/master]
> > > [also build test ERROR on v5.0-rc8]
> > > [cannot apply to next-20190301]
> > > [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
> > >
> > > url:    https://github.com/0day-ci/linux/commits/Joel-Fernandes-Google/Provide-in-kernel-headers-for-making-it-easy-to-extend-the-kernel/20190303-014850
> > > config: sh-allmodconfig (attached as .config)
> > > compiler: sh4-linux-gnu-gcc (Debian 8.2.0-11) 8.2.0
> > > reproduce:
> > >         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> > >         chmod +x ~/bin/make.cross
> > >         # save the attached .config to linux build tree
> > >         GCC_VERSION=8.2.0 make.cross ARCH=sh
> > >
> > > All errors (new ones prefixed by >>):
> > >
> > > >> find: 'arch/sh/kernel/module.lds': No such file or directory
> > > >> find: 'arch/sh/kernel/module.lds': No such file or directory
> On Sun, Mar 03, 2019 at 08:11:59AM -0800, Joel Fernandes wrote:
> > This report is for an older version of the patch so ignore it. The
> > issue is already resolved.
> >
>
> Apologies, this issue is real. However it does not cause any failure. It is
> only causing find command to be a bit noisy.
>
> The below diff fixes it and I'll update the patch for v5:



Let's take a look a little bit closer.


$ find  arch  -name module.lds
arch/ia64/module.lds
arch/powerpc/kernel/module.lds
arch/riscv/kernel/module.lds
arch/arm/kernel/module.lds
arch/m68k/kernel/module.lds
arch/arm64/kernel/module.lds



(1) module.lds may not exist for some architectures
(2) module.lds may be located in a different directory (ia64)

Your fix-up missed (2).







> diff --git a/scripts/gen_ikh_data.sh b/scripts/gen_ikh_data.sh
> index 1fa5628fcc30..9a7ea856acbc 100755
> --- a/scripts/gen_ikh_data.sh
> +++ b/scripts/gen_ikh_data.sh
> @@ -1,5 +1,6 @@
>  #!/bin/bash
>  # SPDX-License-Identifier: GPL-2.0
> +set -e
>
>  spath="$(dirname "$(readlink -f "$0")")"
>  kroot="$spath/.."
> @@ -11,12 +12,14 @@ file_list=${@:2}
>
>  src_file_list=""
>  for f in $file_list; do
> +       if [ ! -f "$kroot/$f" ] && [ ! -d "$kroot/$f" ]; then continue; fi
>         src_file_list="$src_file_list $(echo $f | grep -v OBJDIR)"
>  done
>
>  obj_file_list=""
>  for f in $file_list; do
>         f=$(echo $f | grep OBJDIR | sed -e 's/OBJDIR\///g')
> +       if [ ! -f $f ] && [ ! -d $f ]; then continue; fi
>         obj_file_list="$obj_file_list $f";
>  done
>
> --
> 2.21.0.352.gf09ad66450-goog
>

--
Best Regards
Masahiro Yamada