tree: https://github.com/jpirko/linux_mlxsw petrm_deep_qdisc head: 7d66c347912c7427260e4caeebb4a3a98b84c385 commit: 8086aadd181d6e53ce054e7052858d397ecf2a6e [1/15] net: sch_tbf: Add a graft command config: x86_64-rhel (attached as .config) compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 reproduce (this is a W=1 build): git checkout 8086aadd181d6e53ce054e7052858d397ecf2a6e # save the attached .config to linux build tree make W=1 ARCH=x86_64 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 >>, old ones prefixed by <<): net/sched/sch_tbf.c: In function 'tbf_graft': 565 | tbf_graft_offload(sch, new, *old, extack); | ^~~~~~~~~~~~~~~~~ | tc_can_offload At top level: net/sched/sch_tbf.c:187:13: warning: 'tbf_offload_graft' defined but not used [-Wunused-function] 187 | static void tbf_offload_graft(struct Qdisc *sch, struct Qdisc *new, struct Qdisc *old, | ^~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +565 net/sched/sch_tbf.c 554 555 static int tbf_graft(struct Qdisc *sch, unsigned long arg, struct Qdisc *new, 556 struct Qdisc **old, struct netlink_ext_ack *extack) 557 { 558 struct tbf_sched_data *q = qdisc_priv(sch); 559 560 if (new == NULL) 561 new = &noop_qdisc; 562 563 *old = qdisc_replace(sch, new, &q->qdisc); 564 566 return 0; 567 } 568 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org