tree: https://github.com/dsahern/linux nvme-tcp-offload head: b9ae3391dc24a401030b31ad5363e0471ae386e0 commit: baa2dd14401e2b226927dcaf1d0b3cb2207b1901 [6/15] nvme-tcp: Add DDP data-path config: alpha-randconfig-r026-20201209 (attached as .config) compiler: alpha-linux-gcc (GCC) 9.3.0 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/dsahern/linux/commit/baa2dd14401e2b226927dcaf1d0b3cb22... git remote add dsahern-linux https://github.com/dsahern/linux git fetch --no-tags dsahern-linux nvme-tcp-offload git checkout baa2dd14401e2b226927dcaf1d0b3cb2207b1901 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=alpha If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): 462 | void nvme_tcp_ddp_teardown_done(void *ddp_ctx) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/nvme/host/tcp.c:486:6: warning: no previous prototype for 'nvme_tcp_resync_request' [-Wmissing-prototypes] 486 | bool nvme_tcp_resync_request(struct sock *sk, u32 seq, u32 flags) | ^~~~~~~~~~~~~~~~~~~~~~~ vim +/nvme_tcp_ddp_teardown_done +462 drivers/nvme/host/tcp.c 461 463 {} 464 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org