[kbuild-all] [peterz-queue:objtool/core 30/39] module.c:undefined reference to `apply_retpolines'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git objtool/core head: c59205d0022488e4625ffbcf7c87095dca05fa6d commit: ad68a08875a6f809f833c958ff034df214973562 [30/39] x86/alternative: Implement .retpoline_sites support config: um-x86_64_defconfig (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/peterz/queue.git/commit/?... git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git git fetch --no-tags peterz-queue objtool/core git checkout ad68a08875a6f809f833c958ff034df214973562 # save the attached .config to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=um SUBARCH=x86_64 SHELL=/bin/bash 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 >>): /usr/bin/ld: arch/x86/um/../kernel/module.o: in function `module_finalize': collect2: error: ld returned 1 exit status --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org