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: i386-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # 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 make W=1 O=build_dir ARCH=i386 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/rocker/rocker_main.c: In function 'rocker_switchdev_fdb_event': 2804 | struct switchdev_notifier_fdb_info *fdb_info = ptr; | ^~~~~~~~ drivers/net/ethernet/rocker/rocker_main.c:2801:43: note: previous definition of 'fdb_info' was here 2801 | struct switchdev_notifier_fdb_info *fdb_info) | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~ 2804 | struct switchdev_notifier_fdb_info *fdb_info = ptr; | ^~~ drivers/net/ethernet/rocker/rocker_main.c:2804:49: note: each undeclared identifier is reported only once for each function it appears in vim +/fdb_info +2804 drivers/net/ethernet/rocker/rocker_main.c 2798 2799 static int 2800 rocker_switchdev_fdb_event(unsigned long event, struct net_device *dev, 2801 struct switchdev_notifier_fdb_info *fdb_info) 2802 { 2803 struct rocker_switchdev_event_work *switchdev_work; 2805 struct rocker_port *rocker_port; 2806 2807 rocker_port = netdev_priv(dev); 2808 switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC); 2809 if (WARN_ON(!switchdev_work)) 2810 return NOTIFY_BAD; 2811 2812 INIT_WORK(&switchdev_work->work, rocker_switchdev_event_work); 2813 switchdev_work->rocker_port = rocker_port; 2814 switchdev_work->event = event; 2815 2816 memcpy(&switchdev_work->fdb_info, ptr, 2817 sizeof(switchdev_work->fdb_info)); 2818 switchdev_work->fdb_info.addr = kzalloc(ETH_ALEN, GFP_ATOMIC); 2819 if (unlikely(!switchdev_work->fdb_info.addr)) { 2820 kfree(switchdev_work); 2821 return NOTIFY_BAD; 2822 } 2823 2824 ether_addr_copy((u8 *)switchdev_work->fdb_info.addr, 2825 fdb_info->addr); 2826 /* Take a reference on the rocker device */ 2827 dev_hold(dev); 2828 2829 queue_work(rocker_port->rocker->rocker_owq, 2830 &switchdev_work->work); 2831 2832 return NOTIFY_DONE; 2833 } 2834 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org