linux-kernel - Re: [PATCH v2] kexec_file: Drop weak attribute from arch_kexec_apply_relocations[

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Date:   Thu, 19 May 2022 10:29:48 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     kernel test robot <lkp@...el.com>
Cc:     "Naveen N. Rao" <naveen.n.rao@...ux.vnet.ibm.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Eric Biederman <ebiederm@...ssion.com>,
        kbuild-all@...ts.01.org,
        Linux Memory Management List <linux-mm@...ck.org>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        kexec@...ts.infradead.org
Subject: Re: [PATCH v2] kexec_file: Drop weak attribute from
 arch_kexec_apply_relocations[_add]

On Thu, 19 May 2022 23:17:48 +0800 kernel test robot <lkp@...el.com> wrote:

> Hi "Naveen,
> 
> I love your patch! Yet something to improve:
> 
> [auto build test ERROR on f993aed406eaf968ba3867a76bb46c95336a33d0]
> 
> url:    https://github.com/intel-lab-lkp/linux/commits/Naveen-N-Rao/kexec_file-Drop-weak-attribute-from-arch_kexec_apply_relocations-_add/20220519-171432
> base:   f993aed406eaf968ba3867a76bb46c95336a33d0
> config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20220519/202205192320.CoXevcfR-lkp@intel.com/config)
> compiler: s390-linux-gcc (GCC) 11.3.0
> 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
>         # https://github.com/intel-lab-lkp/linux/commit/67171688c71cb5b05f26e0dfc45eec8d8d1428ff
>         git remote add linux-review https://github.com/intel-lab-lkp/linux
>         git fetch --no-tags linux-review Naveen-N-Rao/kexec_file-Drop-weak-attribute-from-arch_kexec_apply_relocations-_add/20220519-171432
>         git checkout 67171688c71cb5b05f26e0dfc45eec8d8d1428ff
>         # save the config file
>         mkdir build_dir && cp config build_dir/.config
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash arch/s390/
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
> 
> All errors (new ones prefixed by >>):
> 
>    In file included from arch/s390/kernel/machine_kexec_reloc.c:3:
> >> arch/s390/include/asm/kexec.h:89:38: error: unknown type name 'Elf_Shdr'; did you mean 'elf_shdr'?
>       89 |                                      Elf_Shdr *section,
>          |                                      ^~~~~~~~
>          |                                      elf_shdr
>    arch/s390/include/asm/kexec.h:90:44: error: unknown type name 'Elf_Shdr'
>       90 |                                      const Elf_Shdr *relsec,
>          |                                            ^~~~~~~~
>    arch/s390/include/asm/kexec.h:91:44: error: unknown type name 'Elf_Shdr'
>       91 |                                      const Elf_Shdr *symtab);
>          |                                            ^~~~~~~~

Thanks, I did this:

--- a/arch/s390/include/asm/kexec.h~kexec_file-drop-weak-attribute-from-arch_kexec_apply_relocations-fix
+++ a/arch/s390/include/asm/kexec.h
@@ -9,6 +9,8 @@
 #ifndef _S390_KEXEC_H
 #define _S390_KEXEC_H
 
+#include <linux/module.h>
+
 #include <asm/processor.h>
 #include <asm/page.h>
 #include <asm/setup.h>
_