linux-kernel - Re: [PATCH v4 4/4] selftest: Taint kernel when test module loaded

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Message-ID: <202207020132.SKDpQP9D-lkp@intel.com>
Date:   Sat, 2 Jul 2022 01:37:08 +0800
From:   kernel test robot <lkp@...el.com>
To:     David Gow <davidgow@...gle.com>,
        Brendan Higgins <brendanhiggins@...gle.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Jonathan Corbet <corbet@....net>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Kees Cook <keescook@...omium.org>,
        Shuah Khan <skhan@...uxfoundation.org>,
        Greg KH <greg@...ah.com>, Luis Chamberlain <mcgrof@...nel.org>,
        Masahiro Yamada <masahiroy@...nel.org>
Cc:     kbuild-all@...ts.01.org,
        Linux Memory Management List <linux-mm@...ck.org>,
        David Gow <davidgow@...gle.com>,
        "Guilherme G . Piccoli" <gpiccoli@...lia.com>,
        Sebastian Reichel <sre@...nel.org>,
        John Ogness <john.ogness@...utronix.de>,
        Joe Fradley <joefradley@...gle.com>,
        Daniel Latypov <dlatypov@...gle.com>,
        kunit-dev@...glegroups.com, linux-kselftest@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Lucas De Marchi <lucas.demarchi@...el.com>,
        Aaron Tomlin <atomlin@...hat.com>,
        linux-fsdevel@...r.kernel.org, linux-block@...r.kernel.org,
        Michal Marek <michal.lkml@...kovi.net>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        linux-kbuild@...r.kernel.org
Subject: Re: [PATCH v4 4/4] selftest: Taint kernel when test module loaded

Hi David,

I love your patch! Yet something to improve:

[auto build test ERROR on masahiroy-kbuild/for-next]
[also build test ERROR on shuah-kselftest/next linus/master v5.19-rc4 next-20220701]
[cannot apply to mcgrof/modules-next]
[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]

url:    https://github.com/intel-lab-lkp/linux/commits/David-Gow/panic-Taint-kernel-if-tests-are-run/20220701-164843
base:   https://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild.git for-next
config: alpha-randconfig-r006-20220629 (https://download.01.org/0day-ci/archive/20220702/202207020132.SKDpQP9D-lkp@intel.com/config)
compiler: alpha-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/42b6461d6cca4baeeeed474b1400e203057c2b9b
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review David-Gow/panic-Taint-kernel-if-tests-are-run/20220701-164843
        git checkout 42b6461d6cca4baeeeed474b1400e203057c2b9b
        # 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=alpha 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 >>):

   In file included from lib/test_printf.c:27:
   lib/test_printf.c: In function 'test_printf_init':
>> lib/../tools/testing/selftests/kselftest_module.h:45:19: error: 'TAINT_KUNIT' undeclared (first use in this function)
      45 |         add_taint(TAINT_KUNIT, LOCKDEP_STILL_OK);       \
         |                   ^~~~~~~~~~~
   lib/test_printf.c:801:1: note: in expansion of macro 'KSTM_MODULE_LOADERS'
     801 | KSTM_MODULE_LOADERS(test_printf);
         | ^~~~~~~~~~~~~~~~~~~
   lib/../tools/testing/selftests/kselftest_module.h:45:19: note: each undeclared identifier is reported only once for each function it appears in
      45 |         add_taint(TAINT_KUNIT, LOCKDEP_STILL_OK);       \
         |                   ^~~~~~~~~~~
   lib/test_printf.c:801:1: note: in expansion of macro 'KSTM_MODULE_LOADERS'
     801 | KSTM_MODULE_LOADERS(test_printf);
         | ^~~~~~~~~~~~~~~~~~~


vim +/TAINT_KUNIT +45 lib/../tools/testing/selftests/kselftest_module.h

    40	
    41	#define KSTM_MODULE_LOADERS(__module)			\
    42	static int __init __module##_init(void)			\
    43	{							\
    44		pr_info("loaded.\n");				\
  > 45		add_taint(TAINT_KUNIT, LOCKDEP_STILL_OK);	\
    46		selftest();					\
    47		return kstm_report(total_tests, failed_tests, skipped_tests);	\
    48	}							\
    49	static void __exit __module##_exit(void)		\
    50	{							\
    51		pr_info("unloaded.\n");				\
    52	}							\
    53	module_init(__module##_init);				\
    54	module_exit(__module##_exit)
    55	

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