linux-kernel - [kevin78:percpu-cleanup 3/4] include/linux/kern_levels.h:5:25: warning: format '%lx' expects argument of type 'long unsigned int', but argument 4 has type 'long long unsigned int'

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Date:   Tue, 14 Dec 2021 06:19:48 +0800
From:   kernel test robot <lkp@...el.com>
To:     Kefeng Wang <wangkefeng.wang@...wei.com>
Cc:     kbuild-all@...ts.01.org, wangkefeng.wang@...wei.com,
        weiyongjun1@...wei.com, linux-kernel@...r.kernel.org
Subject: [kevin78:percpu-cleanup 3/4] include/linux/kern_levels.h:5:25:
 warning: format '%lx' expects argument of type 'long unsigned int', but
 argument 4 has type 'long long unsigned int'

tree:   https://github.com/kevin78/linux.git percpu-cleanup
head:   ec8bef0e65982bb71c931efddde0fca6418e02ba
commit: c3ebf9a83e686d6d3dc8b571493219a64558d536 [3/4] mm: percpu: Add generic pcpu_fc_alloc/free funciton
config: arm64-defconfig (https://download.01.org/0day-ci/archive/20211214/202112140613.AxIBwwbd-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 11.2.0
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/kevin78/linux/commit/c3ebf9a83e686d6d3dc8b571493219a64558d536
        git remote add kevin78 https://github.com/kevin78/linux.git
        git fetch --no-tags kevin78 percpu-cleanup
        git checkout c3ebf9a83e686d6d3dc8b571493219a64558d536
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm64 SHELL=/bin/bash

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 include/linux/kernel.h:20,
                    from include/linux/cpumask.h:10,
                    from mm/percpu.c:72:
   mm/percpu.c: In function 'pcpu_fc_alloc':
>> include/linux/kern_levels.h:5:25: warning: format '%lx' expects argument of type 'long unsigned int', but argument 4 has type 'long long unsigned int' [-Wformat=]
       5 | #define KERN_SOH        "\001"          /* ASCII Start Of Header */
         |                         ^~~~~~
   include/linux/printk.h:422:25: note: in definition of macro 'printk_index_wrap'
     422 |                 _p_func(_fmt, ##__VA_ARGS__);                           \
         |                         ^~~~
   include/linux/printk.h:132:17: note: in expansion of macro 'printk'
     132 |                 printk(fmt, ##__VA_ARGS__);             \
         |                 ^~~~~~
   include/linux/printk.h:580:9: note: in expansion of macro 'no_printk'
     580 |         no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
         |         ^~~~~~~~~
   include/linux/kern_levels.h:15:25: note: in expansion of macro 'KERN_SOH'
      15 | #define KERN_DEBUG      KERN_SOH "7"    /* debug-level messages */
         |                         ^~~~~~~~
   include/linux/printk.h:580:19: note: in expansion of macro 'KERN_DEBUG'
     580 |         no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
         |                   ^~~~~~~~~~
   mm/percpu.c:3011:17: note: in expansion of macro 'pr_debug'
    3011 |                 pr_debug("per cpu data for cpu%d %lu bytes at %016lx\n",
         |                 ^~~~~~~~
   include/linux/kern_levels.h:5:25: warning: format '%lx' expects argument of type 'long unsigned int', but argument 5 has type 'long long unsigned int' [-Wformat=]
       5 | #define KERN_SOH        "\001"          /* ASCII Start Of Header */
         |                         ^~~~~~
   include/linux/printk.h:422:25: note: in definition of macro 'printk_index_wrap'
     422 |                 _p_func(_fmt, ##__VA_ARGS__);                           \
         |                         ^~~~
   include/linux/printk.h:132:17: note: in expansion of macro 'printk'
     132 |                 printk(fmt, ##__VA_ARGS__);             \
         |                 ^~~~~~
   include/linux/printk.h:580:9: note: in expansion of macro 'no_printk'
     580 |         no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
         |         ^~~~~~~~~
   include/linux/kern_levels.h:15:25: note: in expansion of macro 'KERN_SOH'
      15 | #define KERN_DEBUG      KERN_SOH "7"    /* debug-level messages */
         |                         ^~~~~~~~
   include/linux/printk.h:580:19: note: in expansion of macro 'KERN_DEBUG'
     580 |         no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
         |                   ^~~~~~~~~~
   mm/percpu.c:3018:17: note: in expansion of macro 'pr_debug'
    3018 |                 pr_debug("per cpu data for cpu%d %lu bytes on node%d at %016lx\n",
         |                 ^~~~~~~~


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  

:::::: The code at line 5 was first introduced by commit
:::::: 04d2c8c83d0e3ac5f78aeede51babb3236200112 printk: convert the format for KERN_<LEVEL> to a 2 byte pattern

:::::: TO: Joe Perches <joe@...ches.com>
:::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>

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