linux-kernel - [arm-integrator:kernel-in-vmalloc-v5.17-rc1 8/8] include/linux/kern_levels.h:5:25: warning: format '%x' expects argument of type 'unsigned int', but argument 2 has type 'long unsigned int'

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Date:   Fri, 11 Mar 2022 18:28:02 +0800
From:   kernel test robot <lkp@...el.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [arm-integrator:kernel-in-vmalloc-v5.17-rc1 8/8]
 include/linux/kern_levels.h:5:25: warning: format '%x' expects argument of
 type 'unsigned int', but argument 2 has type 'long unsigned int'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git kernel-in-vmalloc-v5.17-rc1
head:   66e9038ef48dc66c07b12443b73e2d1f3f12cbab
commit: 66e9038ef48dc66c07b12443b73e2d1f3f12cbab [8/8] KASAN horror
config: arm-allmodconfig (https://download.01.org/0day-ci/archive/20220311/202203111841.1Q9NXFVF-lkp@intel.com/config)
compiler: arm-linux-gnueabi-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://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git/commit/?id=66e9038ef48dc66c07b12443b73e2d1f3f12cbab
        git remote add arm-integrator https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git
        git fetch --no-tags arm-integrator kernel-in-vmalloc-v5.17-rc1
        git checkout 66e9038ef48dc66c07b12443b73e2d1f3f12cbab
        # 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=arm SHELL=/bin/bash arch/arm/mm/

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/asm-generic/bug.h:22,
                    from arch/arm/include/asm/bug.h:60,
                    from include/linux/bug.h:5,
                    from include/linux/kasan.h:5,
                    from arch/arm/mm/kasan_init.c:11:
   arch/arm/mm/kasan_init.c: In function 'kasan_init':
>> include/linux/kern_levels.h:5:25: warning: format '%x' expects argument of type 'unsigned int', but argument 2 has type 'long unsigned int' [-Wformat=]
       5 | #define KERN_SOH        "\001"          /* ASCII Start Of Header */
         |                         ^~~~~~
   include/linux/printk.h:418:25: note: in definition of macro 'printk_index_wrap'
     418 |                 _p_func(_fmt, ##__VA_ARGS__);                           \
         |                         ^~~~
   include/linux/printk.h:519:9: note: in expansion of macro 'printk'
     519 |         printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
         |         ^~~~~~
   include/linux/kern_levels.h:14:25: note: in expansion of macro 'KERN_SOH'
      14 | #define KERN_INFO       KERN_SOH "6"    /* informational */
         |                         ^~~~~~~~
   include/linux/printk.h:519:16: note: in expansion of macro 'KERN_INFO'
     519 |         printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
         |                ^~~~~~~~~
   arch/arm/mm/kasan_init.c:237:9: note: in expansion of macro 'pr_info'
     237 |         pr_info("clearing PGDs from %08x-%08x\n", KASAN_SHADOW_START, KASAN_SHADOW_END);
         |         ^~~~~~~
   include/linux/kern_levels.h:5:25: warning: format '%x' expects argument of type 'unsigned int', but argument 3 has type 'long unsigned int' [-Wformat=]
       5 | #define KERN_SOH        "\001"          /* ASCII Start Of Header */
         |                         ^~~~~~
   include/linux/printk.h:418:25: note: in definition of macro 'printk_index_wrap'
     418 |                 _p_func(_fmt, ##__VA_ARGS__);                           \
         |                         ^~~~
   include/linux/printk.h:519:9: note: in expansion of macro 'printk'
     519 |         printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
         |         ^~~~~~
   include/linux/kern_levels.h:14:25: note: in expansion of macro 'KERN_SOH'
      14 | #define KERN_INFO       KERN_SOH "6"    /* informational */
         |                         ^~~~~~~~
   include/linux/printk.h:519:16: note: in expansion of macro 'KERN_INFO'
     519 |         printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
         |                ^~~~~~~~~
   arch/arm/mm/kasan_init.c:237:9: note: in expansion of macro 'pr_info'
     237 |         pr_info("clearing PGDs from %08x-%08x\n", KASAN_SHADOW_START, KASAN_SHADOW_END);
         |         ^~~~~~~


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>

---
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