tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: e71e3a48a7e89fa71fb70bf4602367528864d2ff commit: 0b7338b27e821a61cfa695077aa352312c0ab2f6 [11080/11253] EDAC/igen6: Add Intel Tiger Lake SoC support config: x86_64-randconfig-a013-20210620 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi... git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 0b7338b27e821a61cfa695077aa352312c0ab2f6 # save the attached .config to linux build tree make W=1 ARCH=x86_64 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: drivers/edac/igen6_edac.o: in function `igen6_remove': ld: igen6_edac.c:(.text+0x593): undefined reference to `gen_pool_destroy' ld: drivers/edac/igen6_edac.o: in function `ecclog_gen_pool_add': igen6_edac.c:(.text+0xa24): undefined reference to `gen_pool_alloc_algo_owner' ld: drivers/edac/igen6_edac.o: in function `igen6_probe': igen6_edac.c:(.text+0x2b06): undefined reference to `gen_pool_create' ld: igen6_edac.c:(.text+0x2d7a): undefined reference to `gen_pool_add_owner' ld: igen6_edac.c:(.text+0x2d8d): undefined reference to `gen_pool_destroy' ld: igen6_edac.c:(.text+0x2f86): undefined reference to `gen_pool_destroy' ld: drivers/edac/igen6_edac.o: in function `ecclog_work_cb': igen6_edac.c:(.text+0x3578): undefined reference to `gen_pool_free_owner' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org