tree: https://github.com/jimc/linux.git dd-diet-7a head: f03372b06242fed45a298d29d372b9af92c795a2 commit: 5729928be52f1ce26a82e6263185f7f2f891d68e [36/37] dyndbg: add print-once and print-ratelimited features. RFC. config: i386-randconfig-s001-20210711 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty # https://github.com/jimc/linux/commit/5729928be52f1ce26a82e6263185f7f2f891... git remote add jimc https://github.com/jimc/linux.git git fetch --no-tags jimc dd-diet-7a git checkout 5729928be52f1ce26a82e6263185f7f2f891d68e # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) lib/dynamic_debug.c: note: in included file (through include/linux/printk.h, include/linux/kernel.h): include/linux/dynamic_debug.h:336:1: sparse: sparse: symbol '_LINKONCE_dyndbg_header' was not declared. Should it be static? include/linux/dynamic_debug.h:336:1: sparse: sparse: symbol '_LINKONCE_dyndbg_site_header' was not declared. Should it be static? vim +1485 lib/dynamic_debug.c 1478 1479 /* 1480 * called when enabled callsite has _DPRINTK_FLAGS_RATELIMITED flag 1481 * set (echo +pr >control), it hashes on &table-header+index 1482 */ 1483 static struct dd_ratelimit *dd_rl_fetch(struct _ddebug *desc) 1484 { --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org