tree: https://git.kernel.org/pub/scm/linux/kernel/git/toke/linux.git xdp-traffic-gen-01 head: a7f4d7f9e215d1e540f81f6cd3f5b46d970c5449 commit: fcc7154eccb6e67d55d0cf407d4ce95c49042a5a [8/10] bpf: Add XDP_REDIRECT support to XDP for bpf_prog_run() config: x86_64-randconfig-a013-20211116 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/toke/linux.git/commit/?id... git remote add toke https://git.kernel.org/pub/scm/linux/kernel/git/toke/linux.git git fetch --no-tags toke xdp-traffic-gen-01 git checkout fcc7154eccb6e67d55d0cf407d4ce95c49042a5a # save the attached .config to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash 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 >>): vmlinux.o: warning: objtool: do_machine_check()+0x6d1: call to queue_task_work() leaves .noinstr.text section vmlinux.o: warning: objtool: enter_from_user_mode()+0x4e: call to on_thread_stack() leaves .noinstr.text section vmlinux.o: warning: objtool: syscall_enter_from_user_mode()+0x53: call to on_thread_stack() leaves .noinstr.text section vmlinux.o: warning: objtool: syscall_enter_from_user_mode_prepare()+0x4e: call to on_thread_stack() leaves .noinstr.text section vmlinux.o: warning: objtool: irqentry_enter_from_user_mode()+0x4e: call to on_thread_stack() leaves .noinstr.text section ld: net/bpf/test_run.o: in function `bpf_test_run_xdp_setup': vim +160 net/bpf/test_run.c 144 145 static int bpf_test_run_xdp_setup(struct bpf_test_timer *t, struct xdp_buff *orig_ctx) 146 { 147 struct xdp_mem_info mem = {}; 148 struct page_pool *pp; 149 int err; 150 struct page_pool_params pp_params = { 151 .order = 0, 152 .flags = 0, 153 .pool_size = NAPI_POLL_WEIGHT * 2, 154 .nid = NUMA_NO_NODE, 155 .max_len = TEST_XDP_FRAME_SIZE, 156 .init_callback = bpf_test_run_xdp_init_page, 157 .init_arg = t, 158 }; 159 161 if (IS_ERR(pp)) 162 return PTR_ERR(pp); 163 164 /* will copy 'mem->id' into pp->xdp_mem_id */ 165 err = xdp_reg_mem_model(&mem, MEM_TYPE_PAGE_POOL, pp); 166 if (err) { 167 page_pool_destroy(pp); 168 return err; 169 } 170 t->xdp.pp = pp; 171 172 /* We create a 'fake' RXQ referencing the original dev, but with an 173 * xdp_mem_info pointing to our page_pool 174 */ 175 xdp_rxq_info_reg(&t->xdp.rxq, orig_ctx->rxq->dev, 0, 0); 176 t->xdp.rxq.mem.type = MEM_TYPE_PAGE_POOL; 177 t->xdp.rxq.mem.id = pp->xdp_mem_id; 178 t->xdp.orig_ctx = orig_ctx; 179 180 return 0; 181 } 182 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org