tree: https://github.com/jpirko/linux_mlxsw petrm_wip head: 1fdfe6d7f2d5e76d5b9a41a380a4bf928a9eb3f0 commit: db0a26918a58afafeae818f805209958ae3fd543 [35/36] qevent wip config: mips-rt305x_defconfig (attached as .config) compiler: mipsel-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 db0a26918a58afafeae818f805209958ae3fd543 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips 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 <<): mipsel-linux-ld: net/sched/sch_api.o: in function `sch_qdisc_find.constprop.0': sch_api.c:(.text.unlikely+0xc0): undefined reference to `__tcf_qdisc_find' mipsel-linux-ld: net/sched/sch_api.o: in function `tc_new_qevent': sch_api.c:(.text.unlikely+0x3b0): undefined reference to `__tcf_qdisc_cl_find' mipsel-linux-ld: net/sched/sch_api.o: in function `tc_del_qevent': sch_api.c:(.text.unlikely+0x5cc): undefined reference to `__tcf_qdisc_cl_find' mipsel-linux-ld: net/sched/sch_fifo.o: in function `fifo_destroy': sch_fifo.c:(.text+0xbc): undefined reference to `tcf_exts_destroy' mipsel-linux-ld: net/sched/sch_fifo.o: in function `fifo_init': sch_fifo.c:(.text+0x310): undefined reference to `tcf_exts_destroy' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org