tree:   https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git modules/WIP
head:   d4334fbbfc2d716f1e9f8002d51c40a681f047ba
commit: 1a3729608e2468f1f559b7584281e4fe07e9c3ee [22/23] ftrace: Merge ftrace_module_{init,enable}()
config: powerpc-rhel-kconfig (attached as .config)
compiler: powerpc64le-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 1a3729608e2468f1f559b7584281e4fe07e9c3ee
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=powerpc 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>, old ones prefixed by <<):

powerpc64le-linux-ld: kernel/module.o: in function `__se_sys_delete_module':
>> module.c:(.text+0x6790): undefined reference to `ftrace_module_release'
powerpc64le-linux-ld: kernel/module.o: in function `do_init_module':
module.c:(.text+0x6b60): undefined reference to `ftrace_module_release'
powerpc64le-linux-ld: kernel/module.o: in function `load_module':
module.c:(.text+0x9cac): undefined reference to `ftrace_module_release'

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0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org