tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git x86/module head: c9a32b3020effe753a95d2e26662206b7aadf832 commit: b88bbb9edf5931e928d27169d4b223f8a99313bb [3/5] x86,module: Detect VMX vs SLD conflicts config: um-defconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 reproduce (this is a W=1 build): git checkout b88bbb9edf5931e928d27169d4b223f8a99313bb # save the attached .config to linux build tree make W=1 ARCH=um 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 `decode_module': /usr/bin/ld: module.c:(.text+0x39): undefined reference to `insn_init' /usr/bin/ld: module.c:(.text+0x6b): undefined reference to `insn_get_length' 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