linux-hardening - Re: [PATCH] capabilities: new kernel.ns_modules

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Date:   Thu, 11 Aug 2022 05:54:00 +0800
From:   kernel test robot <lkp@...el.com>
To:     Vegard Nossum <vegard.nossum@...cle.com>,
        linux-kernel@...r.kernel.org
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        Vegard Nossum <vegard.nossum@...cle.com>,
        Thadeu Lima de Souza Cascardo <cascardo@...onical.com>,
        Serge Hallyn <serge@...lyn.com>,
        Eric Biederman <ebiederm@...ssion.com>,
        Kees Cook <keescook@...omium.org>,
        linux-hardening@...r.kernel.org, John Haxby <john.haxby@...cle.com>
Subject: Re: [PATCH] capabilities: new kernel.ns_modules_allowed sysctl

Hi Vegard,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on kees/for-next/pstore]
[also build test ERROR on v5.19]
[cannot apply to linus/master next-20220810]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Vegard-Nossum/capabilities-new-kernel-ns_modules_allowed-sysctl/20220810-031142
base:   https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/pstore
config: arm64-buildonly-randconfig-r006-20220810 (https://download.01.org/0day-ci/archive/20220811/202208110524.fN5PNDSo-lkp@intel.com/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 5f1c7e2cc5a3c07cbc2412e851a7283c1841f520)
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 arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://github.com/intel-lab-lkp/linux/commit/bd78b69455d4b3cac70812bf23a27de310e813cd
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Vegard-Nossum/capabilities-new-kernel-ns_modules_allowed-sysctl/20220810-031142
        git checkout bd78b69455d4b3cac70812bf23a27de310e813cd
        # 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=arm64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

>> kernel/kmod.c:213:2: error: call to undeclared function 'register_sysctl_init'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
           register_sysctl_init("kernel", kmod_sysctl_table);
           ^
   1 error generated.


vim +/register_sysctl_init +213 kernel/kmod.c

   210	
   211	static int __init kmod_sysctl_init(void)
   212	{
 > 213		register_sysctl_init("kernel", kmod_sysctl_table);

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp