Re: [PATCH RFC 02/10] x86, kfence: enable KFENCE for x86

From: kernel test robot <lkp@intel.com>
To: kbuild-all@lists.01.org
Subject: Re: [PATCH RFC 02/10] x86, kfence: enable KFENCE for x86
Date: Tue, 08 Sep 2020 01:31:34 +0800	[thread overview]
Message-ID: <202009080112.2UWgF1O6%lkp@intel.com> (raw)
In-Reply-To: <20200907134055.2878499-3-elver@google.com>

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Hi Marco,

[FYI, it's a private test report for your RFC patch.]
[auto build test WARNING on hnaz-linux-mm/master]
[also build test WARNING on arm64/for-next/core tip/x86/core linus/master v5.9-rc4 next-20200903]
[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/Marco-Elver/KFENCE-A-low-overhead-sampling-based-memory-safety-error-detector/20200907-214229
base:   https://github.com/hnaz/linux-mm master
config: i386-allyesconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce (this is a W=1 build):
        # save the attached .config to linux build tree
        make W=1 ARCH=i386 

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

All warnings (new ones prefixed by >>):

   In file included from include/linux/printk.h:7,
                    from include/linux/kernel.h:15,
                    from include/asm-generic/bug.h:20,
                    from arch/x86/include/asm/bug.h:93,
                    from include/linux/bug.h:5,
                    from mm/kfence/core.c:6:
   mm/kfence/core.c: In function 'kfence_init':
>> include/linux/kern_levels.h:5:18: warning: format '%zu' expects argument of type 'size_t', but argument 2 has type 'long unsigned int' [-Wformat=]
       5 | #define KERN_SOH "\001"  /* ASCII Start Of Header */
         |                  ^~~~~~
   include/linux/kern_levels.h:14:19: note: in expansion of macro 'KERN_SOH'
      14 | #define KERN_INFO KERN_SOH "6" /* informational */
         |                   ^~~~~~~~
   include/linux/printk.h:369:9: note: in expansion of macro 'KERN_INFO'
     369 |  printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
         |         ^~~~~~~~~
   mm/kfence/core.c:552:2: note: in expansion of macro 'pr_info'
     552 |  pr_info("initialized - using %zu bytes for %d objects", KFENCE_POOL_SIZE,
         |  ^~~~~~~
   mm/kfence/core.c:552:33: note: format string is defined here
     552 |  pr_info("initialized - using %zu bytes for %d objects", KFENCE_POOL_SIZE,
         |                               ~~^
         |                                 |
         |                                 unsigned int
         |                               %lu

# https://github.com/0day-ci/linux/commit/347eefe4fa3022b7f8ddd093ce109529b511240b
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Marco-Elver/KFENCE-A-low-overhead-sampling-based-memory-safety-error-detector/20200907-214229
git checkout 347eefe4fa3022b7f8ddd093ce109529b511240b
vim +5 include/linux/kern_levels.h

314ba3520e513a Joe Perches 2012-07-30  4  
04d2c8c83d0e3a Joe Perches 2012-07-30 @5  #define KERN_SOH	"\001"		/* ASCII Start Of Header */
04d2c8c83d0e3a Joe Perches 2012-07-30  6  #define KERN_SOH_ASCII	'\001'
04d2c8c83d0e3a Joe Perches 2012-07-30  7  

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

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