tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git modules/WIP head: 21453b24e9eaee832e0dd74437713de44eb2d842 commit: 2768d65c7d43ed1eed92a71592820a16c208ba29 [22/23] ftrace: Merge ftrace_module_{init,enable}() config: powerpc-defconfig (attached as .config) compiler: powerpc64-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 2768d65c7d43ed1eed92a71592820a16c208ba29 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=powerpc If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): powerpc64-linux-ld: kernel/module.o: in function `.__se_sys_delete_module': powerpc64-linux-ld: kernel/module.o: in function `.do_init_module': module.c:(.text+0x57f0): undefined reference to `.ftrace_module_release' powerpc64-linux-ld: kernel/module.o: in function `.load_module': module.c:(.text+0x6f90): undefined reference to `.ftrace_module_release' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org