tree: https://github.com/jimc/linux.git dd-drm-next head: e3f40a2de6dbe092915c690ba4c346af81d164dd commit: 9025ef40678e996b49efb875cefcec5d004a4795 [2/12] dyndbg: add DEFINE_DYNAMIC_DEBUG_CATEGORIES and callbacks config: i386-randconfig-c001-20210821 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project a83d99c55ebb14532c414066a5aa3bdb65389965) 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/jimc/linux/commit/9025ef40678e996b49efb875cefcec5d004a... git remote add jimc https://github.com/jimc/linux.git git fetch --no-tags jimc dd-drm-next git checkout 9025ef40678e996b49efb875cefcec5d004a4795 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from <built-in>:4: In file included from drivers/gpu/drm/i915/display/intel_display_types.h:30: In file included from include/linux/i2c.h:13: In file included from include/linux/acpi.h:28: static inline int param_set_dyndbg(const char *instr, const struct kernel_param *kp) ^ include/linux/dynamic_debug.h:234:63: error: declaration of 'struct kernel_param' will not be visible outside of this function [-Werror,-Wvisibility] static inline int param_get_dyndbg(char *buffer, const struct kernel_param *kp) ^ 2 errors generated. vim +232 include/linux/dynamic_debug.h 231 233 { return 0; } 234 static inline int param_get_dyndbg(char *buffer, const struct kernel_param *kp) 235 { return 0; } 236 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org