tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: f30a24ed97b401416118756fa35fbe5d28f999e3 commit: 00ef32565b9bd03c63ed944bc27878fbbc1c4e0a [2700/3897] net: wwan: iosm: device trace collection using relayfs config: ia64-randconfig-r034-20211128 (https://download.01.org/0day-ci/archive/20211128/202111281808.bJpw6GJQ-lkp@xxxxxxxxx/config) compiler: ia64-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://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=00ef32565b9bd03c63ed944bc27878fbbc1c4e0a git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 00ef32565b9bd03c63ed944bc27878fbbc1c4e0a # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=ia64 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): ia64-linux-ld: drivers/net/wwan/iosm/iosm_ipc_trace.o: in function `ipc_trace_create_buf_file_handler': >> iosm_ipc_trace.c:(.text+0x1): undefined reference to `relay_file_operations' >> ia64-linux-ld: iosm_ipc_trace.c:(.text+0x31): undefined reference to `relay_file_operations' ia64-linux-ld: drivers/net/wwan/iosm/iosm_ipc_trace.o: in function `ipc_trace_ctrl_file_write': >> iosm_ipc_trace.c:(.text+0x232): undefined reference to `relay_flush' ia64-linux-ld: drivers/net/wwan/iosm/iosm_ipc_trace.o: in function `ipc_trace_subbuf_start_handler': >> iosm_ipc_trace.c:(.text+0x372): undefined reference to `relay_buf_full' ia64-linux-ld: drivers/net/wwan/iosm/iosm_ipc_trace.o: in function `ipc_trace_port_rx': >> iosm_ipc_trace.c:(.text+0x4e2): undefined reference to `relay_switch_subbuf' ia64-linux-ld: drivers/net/wwan/iosm/iosm_ipc_trace.o: in function `ipc_trace_init': >> iosm_ipc_trace.c:(.text+0x732): undefined reference to `relay_open' ia64-linux-ld: drivers/net/wwan/iosm/iosm_ipc_trace.o: in function `ipc_trace_deinit': >> iosm_ipc_trace.c:(.text+0x792): undefined reference to `relay_close' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx