tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: f55966571d5eb2876a11e48e798b4592fa1ffbb7 commit: 77a781155a659053f3b7e81a0ab115d27ff151cd ice: enable receive hardware timestamping date: 4 weeks ago config: i386-randconfig-a015-20210709 (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/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 77a781155a659053f3b7e81a0ab115d27ff151cd # 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 >>): ld: drivers/net/ethernet/intel/ice/ice_main.o: in function `ice_do_ioctl': ld: drivers/net/ethernet/intel/ice/ice_main.o: in function `ice_prepare_for_reset': ice_main.c:(.text+0x107f): undefined reference to `ice_ptp_release' ld: drivers/net/ethernet/intel/ice/ice_main.o: in function `ice_rebuild': ice_main.c:(.text+0x43de): undefined reference to `ice_ptp_init' ld: drivers/net/ethernet/intel/ice/ice_main.o: in function `ice_remove': ice_main.c:(.text+0x4777): undefined reference to `ice_ptp_release' ld: drivers/net/ethernet/intel/ice/ice_main.o: in function `ice_probe': ice_main.c:(.text+0x6910): undefined reference to `ice_ptp_init' ld: drivers/net/ethernet/intel/ice/ice_txrx_lib.o: in function `ice_process_skb_fields': ld: drivers/net/ethernet/intel/ice/ice_ethtool.o: in function `ice_get_ts_info': ice_ethtool.c:(.text+0xc2d): undefined reference to `ice_get_ptp_clock_index' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org