Hi Vladimir, [FYI, it's a private test report for your RFC patch.] [auto build test ERROR on net-next/master] url: https://github.com/0day-ci/linux/commits/Vladimir-Oltean/DSA-FDB-isolatio... base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git ab44035d308227723b490487ff0feba521e87029 config: arm64-allyesconfig (attached as .config) compiler: aarch64-linux-gcc (GCC) 11.2.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/c3f584a3a5fcbaf747a1c754720afa897... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Vladimir-Oltean/DSA-FDB-isolation/20210818-200630 git checkout c3f584a3a5fcbaf747a1c754720afa897885c9a7 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm64 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 >>): drivers/net/ethernet/ti/am65-cpsw-switchdev.c: In function 'am65_cpsw_switchdev_fdb_event': 461 | memcpy(&switchdev_work->fdb_info, ptr, | ^~~ drivers/net/ethernet/ti/am65-cpsw-switchdev.c:461:43: note: each undeclared identifier is reported only once for each function it appears in vim +/ptr +461 drivers/net/ethernet/ti/am65-cpsw-switchdev.c c3f584a3a5fcba Vladimir Oltean 2021-08-18 442 c3f584a3a5fcba Vladimir Oltean 2021-08-18 443 static int am65_cpsw_switchdev_fdb_event(struct net_device *ndev, c3f584a3a5fcba Vladimir Oltean 2021-08-18 444 unsigned long event, c3f584a3a5fcba Vladimir Oltean 2021-08-18 445 struct switchdev_notifier_fdb_info *fdb_info) c3f584a3a5fcba Vladimir Oltean 2021-08-18 446 { c3f584a3a5fcba Vladimir Oltean 2021-08-18 447 struct am65_cpsw_switchdev_event_work *switchdev_work; c3f584a3a5fcba Vladimir Oltean 2021-08-18 448 struct am65_cpsw_port *port = am65_ndev_to_port(ndev); c3f584a3a5fcba Vladimir Oltean 2021-08-18 449 c3f584a3a5fcba Vladimir Oltean 2021-08-18 450 if (!am65_cpsw_port_dev_check(ndev)) c3f584a3a5fcba Vladimir Oltean 2021-08-18 451 return 0; 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 452 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 453 switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 454 if (WARN_ON(!switchdev_work)) c3f584a3a5fcba Vladimir Oltean 2021-08-18 455 return -ENOMEM; 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 456 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 457 INIT_WORK(&switchdev_work->work, am65_cpsw_switchdev_event_work); 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 458 switchdev_work->port = port; 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 459 switchdev_work->event = event; 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 460 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 @461 memcpy(&switchdev_work->fdb_info, ptr, 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 462 sizeof(switchdev_work->fdb_info)); 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 463 switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 464 if (!switchdev_work->fdb_info.addr) 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 465 goto err_addr_alloc; 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 466 ether_addr_copy((u8 *)switchdev_work->fdb_info.addr, 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 467 fdb_info->addr); 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 468 dev_hold(ndev); 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 469 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 470 queue_work(system_long_wq, &switchdev_work->work); 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 471 c3f584a3a5fcba Vladimir Oltean 2021-08-18 472 return 0; 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 473 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 474 err_addr_alloc: 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 475 kfree(switchdev_work); c3f584a3a5fcba Vladimir Oltean 2021-08-18 476 return -ENOMEM; 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 477 } 86e8b070b25e3c Vignesh Raghavendra 2021-02-11 478 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org