tree:   https://github.com/ammarfaizi2/linux-block paulmck/linux-rcu/dev
head:   e4c62168a64c5ee1414f955cecedaa00aaaa4e84
commit: f1c73cc03a10ba8300792eb9cbd0686614efd2b2 [39/41] rcu-tasks: Report stalls during synchronize_srcu() in rcu_tasks_postscan()
config: m68k-allmodconfig
compiler: m68k-linux-gcc (GCC) 12.1.0
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/ammarfaizi2/linux-block/commit/f1c73cc03a10ba8300792eb9cbd0686614efd2b2
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block paulmck/linux-rcu/dev
        git checkout f1c73cc03a10ba8300792eb9cbd0686614efd2b2
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash kernel/

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

All warnings (new ones prefixed by >>):

   In file included from include/linux/kernel.h:29,
                    from kernel/rcu/update.c:21:
   kernel/rcu/tasks.h: In function 'tasks_rcu_exit_srcu_stall':
   kernel/rcu/tasks.h:944:17: error: implicit declaration of function 'tasks_gp_state_getname' [-Werror=implicit-function-declaration]
     944 |                 tasks_gp_state_getname(&rcu_tasks), jiffies - rcu_tasks.gp_jiffies);
         |                 ^~~~~~~~~~~~~~~~~~~~~~
   include/linux/printk.h:429:33: note: in definition of macro 'printk_index_wrap'
     429 |                 _p_func(_fmt, ##__VA_ARGS__);                           \
         |                                 ^~~~~~~~~~~
   include/linux/printk.h:530:9: note: in expansion of macro 'printk'
     530 |         printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
         |         ^~~~~~
   kernel/rcu/tasks.h:942:9: note: in expansion of macro 'pr_info'
     942 |         pr_info("%s: %s grace period number %lu (since boot) gp_state: %s is %lu jiffies old.\n",
         |         ^~~~~~~
>> include/linux/kern_levels.h:5:25: warning: format '%s' expects argument of type 'char *', but argument 5 has type 'int' [-Wformat=]
       5 | #define KERN_SOH        "\001"          /* ASCII Start Of Header */
         |                         ^~~~~~
   include/linux/printk.h:429:25: note: in definition of macro 'printk_index_wrap'
     429 |                 _p_func(_fmt, ##__VA_ARGS__);                           \
         |                         ^~~~
   include/linux/printk.h:530:9: note: in expansion of macro 'printk'
     530 |         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:530:16: note: in expansion of macro 'KERN_INFO'
     530 |         printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
         |                ^~~~~~~~~
   kernel/rcu/tasks.h:942:9: note: in expansion of macro 'pr_info'
     942 |         pr_info("%s: %s grace period number %lu (since boot) gp_state: %s is %lu jiffies old.\n",
         |         ^~~~~~~
   cc1: some warnings being treated as errors


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@perches.com>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests