tree: https://github.com/jimc/linux.git dd-diet-6c2 head: c0dcfb4fa5652b5d3f9c95f797ba84f8ec6d809b commit: d29f2fbe3a2ecb1391e1ed5271f3f0728e963759 [34/36] dyndbg: add print-once and print-ratelimited features. RFC. config: i386-randconfig-s001-20210615 (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/d29f2fbe3a2ecb1391e1ed5271f3f0728e96... git remote add jimc https://github.com/jimc/linux.git git fetch --no-tags jimc dd-diet-6c2 git checkout d29f2fbe3a2ecb1391e1ed5271f3f0728e963759 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=i386 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 +1457 lib/dynamic_debug.c 1450 1451 /* 1452 * called when enabled callsite has _DPRINTK_FLAGS_RATELIMITED flag 1453 * set (echo +pr >control), it hashes on &table-header+index 1454 */ 1455 static struct dd_ratelimit * dd_rl_fetch(struct _ddebug *desc) 1456 { --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org