tree: git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux topic-rpc-with-tls-upcall head: 0fd328ea53e7d539bf8bb160d773e1d027c60fea commit: adb54a631895e050da6ed9a18f9b503f927b642d [18/19] SUNRPC: RPC client support for TLS handshake upcall config: m68k-mvme16x_defconfig (https://download.01.org/0day-ci/archive/20220113/202201131717.0cAQPcmU-lk...) compiler: m68k-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/cel/linux.git/commit/?id=... git remote add cel git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux git fetch --no-tags cel topic-rpc-with-tls-upcall git checkout adb54a631895e050da6ed9a18f9b503f927b642d # 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=m68k 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 >>): m68k-linux-ld: net/sunrpc/xprtsock.o: in function `xs_tcp_tls_handshake_async': m68k-linux-ld: net/sunrpc/xprtsock.o: in function `xs_tcp_tls_handshake_sync': xprtsock.c:(.text+0x958): undefined reference to `tls_client_hello_user' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org