Hi Jim, I love your patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on next-20200807] [cannot apply to linux/master asm-generic/master v5.8] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Jim-Cromie/dyndbg-WIP-diet-plan/... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 86cfccb66937dd6cbf26ed619958b9e587e6a115 config: i386-randconfig-a003-20200807 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): # save the attached .config to linux build tree make 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; All errors (new ones prefixed by >>): ld: lib/dynamic_debug.o: in function `ddebug_callsite_put': lib/dynamic_debug.c:176: undefined reference to `zs_unmap_object' ld: lib/dynamic_debug.o: in function `ddebug_callsite_get': lib/dynamic_debug.c:164: undefined reference to `zs_map_object' ld: lib/dynamic_debug.o: in function `ddebug_zpool_add': lib/dynamic_debug.c:985: undefined reference to `zs_malloc' ld: lib/dynamic_debug.c:994: undefined reference to `zs_map_object' ld: lib/dynamic_debug.c:1004: undefined reference to `zs_unmap_object' ld: lib/dynamic_debug.o: in function `ddebug_callsite_put': lib/dynamic_debug.c:176: undefined reference to `zs_unmap_object' ld: lib/dynamic_debug.o: in function `ddebug_callsite_get': lib/dynamic_debug.c:164: undefined reference to `zs_map_object' ld: lib/dynamic_debug.o: in function `ddebug_callsite_put': lib/dynamic_debug.c:176: undefined reference to `zs_unmap_object' ld: lib/dynamic_debug.o: in function `ddebug_callsite_get': lib/dynamic_debug.c:164: undefined reference to `zs_map_object' ld: lib/dynamic_debug.o: in function `ddebug_zpool_remove': ld: lib/dynamic_debug.c:1011: undefined reference to `zs_unmap_object' ld: lib/dynamic_debug.o: in function `ddebug_zpool_init': lib/dynamic_debug.c:1178: undefined reference to `zs_create_pool' ld: lib/dynamic_debug.c:1188: undefined reference to `zs_compact' ld: lib/dynamic_debug.c:1188: undefined reference to `zs_get_total_pages' vim +1016 lib/dynamic_debug.c 1006 1007 static void ddebug_zpool_remove(struct _ddebug *dp) 1008 { 1009 if (dp->site) { 1010 pr_warn("zhandle shouldnt be mapped now\n"); 1011 zs_unmap_object(dd_callsite_zpool, dp->zhandle); 1012 } 1013 if (!dp->zhandle) 1014 pr_err("zhandle already cleared !\n"); 1015 else 1017 } 1018 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org