linux-kernel - Re: [PATCH v4 next 3/3] modules:capabilities: add a per-task modules auto-load mode

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Date:   Tue, 23 May 2017 22:18:58 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Djalal Harouni <tixxdz@...il.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        netdev@...r.kernel.org, linux-security-module@...r.kernel.org,
        kernel-hardening@...ts.openwall.com,
        Andy Lutomirski <luto@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Rusty Russell <rusty@...tcorp.com.au>,
        "Serge E. Hallyn" <serge@...lyn.com>, Jessica Yu <jeyu@...hat.com>,
        "David S. Miller" <davem@...emloft.net>,
        James Morris <james.l.morris@...cle.com>,
        Paul Moore <paul@...l-moore.com>,
        Stephen Smalley <sds@...ho.nsa.gov>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
        Ingo Molnar <mingo@...nel.org>,
        Linux API <linux-api@...r.kernel.org>,
        Dongsu Park <dpark@...teo.net>,
        Casey Schaufler <casey@...aufler-ca.com>,
        Jonathan Corbet <corbet@....net>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Zendyani <zendyani@...il.com>, linux-doc@...r.kernel.org,
        Al Viro <viro@...iv.linux.org.uk>,
        Ben Hutchings <ben.hutchings@...ethink.co.uk>,
        Djalal Harouni <tixxdz@...il.com>
Subject: Re: [PATCH v4 next 3/3] modules:capabilities: add a per-task modules
 auto-load mode

Hi Djalal,

[auto build test ERROR on next-20170522]

url:    https://github.com/0day-ci/linux/commits/Djalal-Harouni/modules-automatic-module-loading-restrictions/20170523-193128
config: sparc64-allnoconfig (attached as .config)
compiler: sparc64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=sparc64 

All errors (new ones prefixed by >>):

   In file included from arch/sparc/kernel/setup_64.c:32:0:
   include/linux/module.h:683:30: error: storage class specified for parameter '__module_address'
    static inline struct module *__module_address(unsigned long addr)
                                 ^~~~~~~~~~~~~~~~
   include/linux/module.h:683:30: error: parameter '__module_address' declared 'inline' [-Werror]
>> include/linux/module.h:684:1: error: 'always_inline' attribute ignored [-Werror=attributes]
    {
    ^
   include/linux/module.h:683:30: error: 'no_instrument_function' attribute applies only to functions
    static inline struct module *__module_address(unsigned long addr)
                                 ^~~~~~~~~~~~~~~~
   include/linux/module.h:684:1: error: expected ';', ',' or ')' before '{' token
    {
    ^
   cc1: all warnings being treated as errors

vim +/always_inline +684 include/linux/module.h

98702500 Djalal Harouni 2017-05-22  677  static inline int task_modules_autoload_mode(struct task_struct *task)
98702500 Djalal Harouni 2017-05-22  678  {
98702500 Djalal Harouni 2017-05-22  679  	return -ENOSYS;
98702500 Djalal Harouni 2017-05-22  680  }
98702500 Djalal Harouni 2017-05-22  681  
98702500 Djalal Harouni 2017-05-22  682  static inline bool within_module_core(unsigned long addr,
e610499e Rusty Russell  2009-03-31 @683  static inline struct module *__module_address(unsigned long addr)
e610499e Rusty Russell  2009-03-31 @684  {
e610499e Rusty Russell  2009-03-31  685  	return NULL;
e610499e Rusty Russell  2009-03-31  686  }
e610499e Rusty Russell  2009-03-31  687  

:::::: The code at line 684 was first introduced by commit
:::::: e610499e2656e61975affd0af56b26eb73964c84 module: __module_address

:::::: TO: Rusty Russell <rusty@...tcorp.com.au>
:::::: CC: Rusty Russell <rusty@...tcorp.com.au>

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