linux-hardening - Re: [PATCH v5 4/5] Add new file in LKDTM to test fortified strscpy.

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Date:   Thu, 19 Nov 2020 12:36:13 +0800
From:   kernel test robot <lkp@...el.com>
To:     laniel_francis@...vacyrequired.com, akpm@...ux-foundation.org
Cc:     kbuild-all@...ts.01.org, linux-hardening@...r.kernel.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org, dja@...ens.net,
        keescook@...omium.org,
        Francis Laniel <laniel_francis@...vacyrequired.com>
Subject: Re: [PATCH v5 4/5] Add new file in LKDTM to test fortified strscpy.

Hi,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on char-misc/char-misc-testing]
[also build test WARNING on kselftest/next linus/master hnaz-linux-mm/master v5.10-rc4 next-20201118]
[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/0day-ci/linux/commits/laniel_francis-privacyrequired-com/Fortify-strscpy/20201118-190826
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git 93c69b2d17372463ae33b79b3002c22a208945b3
config: xtensa-allyesconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 9.3.0
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/0day-ci/linux/commit/b8ce9dd880f1853b99ef29a47088fe8f9c2bf885
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review laniel_francis-privacyrequired-com/Fortify-strscpy/20201118-190826
        git checkout b8ce9dd880f1853b99ef29a47088fe8f9c2bf885
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=xtensa 

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

All warnings (new ones prefixed by >>):

   In file included from drivers/misc/lkdtm/fortify.c:9:
>> drivers/misc/lkdtm/lkdtm.h:5: warning: "pr_fmt" redefined
       5 | #define pr_fmt(fmt) "lkdtm: " fmt
         | 
   In file included from include/linux/kernel.h:16,
                    from include/asm-generic/bug.h:20,
                    from ./arch/xtensa/include/generated/asm/bug.h:1,
                    from include/linux/bug.h:5,
                    from include/linux/mmdebug.h:5,
                    from include/linux/gfp.h:5,
                    from include/linux/slab.h:15,
                    from drivers/misc/lkdtm/fortify.c:8:
   include/linux/printk.h:301: note: this is the location of the previous definition
     301 | #define pr_fmt(fmt) fmt
         | 

vim +/pr_fmt +5 drivers/misc/lkdtm/lkdtm.h

9a49a528dcf3c20 drivers/misc/lkdtm.h Kees Cook 2016-02-22  4  
6d2e91a662256fd drivers/misc/lkdtm.h Kees Cook 2016-07-15 @5  #define pr_fmt(fmt) "lkdtm: " fmt
6d2e91a662256fd drivers/misc/lkdtm.h Kees Cook 2016-07-15  6  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Download attachment ".config.gz" of type "application/gzip" (66129 bytes)