tree: https://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux.git ceph-fscrypt head: adf69efebc954db1aa7af7b93febbc2a1b51dc6c commit: adf69efebc954db1aa7af7b93febbc2a1b51dc6c [57/57] libceph: define a structure to track SPARSE_READ reply processing config: i386-randconfig-a015 (https://download.01.org/0day-ci/archive/20220211/202202111326.dzplRoUb-lk...) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project f6685f774697c85d6a352dcea013f46a99f9fe31) 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/jlayton/linux.git/commit/... git remote add jlayton https://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux.git git fetch --no-tags jlayton ceph-fscrypt git checkout adf69efebc954db1aa7af7b93febbc2a1b51dc6c # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash net/ceph/ 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 >>): static int prepare_read_data(struct cepn_connection *con) ^ net/ceph/messenger_v2.c:1787:5: error: incomplete definition of type 'struct cepn_connection' con->in_data_crc = -1; ~~~^ net/ceph/messenger_v2.c:1783:37: note: forward declaration of 'struct cepn_connection' static int prepare_read_data(struct cepn_connection *con) ^ net/ceph/messenger_v2.c:1788:47: error: incomplete definition of type 'struct cepn_connection' ret = prepare_read_data_len(con, data_len(con->in_msg)); ~~~^ net/ceph/messenger_v2.c:1783:37: note: forward declaration of 'struct cepn_connection' static int prepare_read_data(struct cepn_connection *con) ^ net/ceph/messenger_v2.c:1790:6: error: incomplete definition of type 'struct cepn_connection' con->v2.in_state = IN_S_PREPARE_READ_DATA_CONT; ~~~^ net/ceph/messenger_v2.c:1783:37: note: forward declaration of 'struct cepn_connection' static int prepare_read_data(struct cepn_connection *con) ^ net/ceph/messenger_v2.c:1842:24: error: use of undeclared identifier 'iter' if (!iov_iter_is_bvec(iter)) ^ net/ceph/messenger_v2.c:1881:10: error: implicit declaration of function 'handle_epilogue' [-Werror,-Wimplicit-function-declaration] return handle_epilogue(con); ^ net/ceph/messenger_v2.c:1881:10: note: did you mean 'decode_epilogue'? net/ceph/messenger_v2.c:573:12: note: 'decode_epilogue' declared here static int decode_epilogue(void *p, u32 *front_crc, u32 *middle_crc, ^ net/ceph/messenger_v2.c:1898:24: error: use of undeclared identifier 'iter' if (!iov_iter_is_kvec(iter)) ^ net/ceph/messenger_v2.c:1951:28: error: incompatible pointer types passing 'struct ceph_connection *' to parameter of type 'struct cepn_connection *' [-Werror,-Wincompatible-pointer-types] return prepare_read_data(con); ^~~ net/ceph/messenger_v2.c:1783:54: note: passing argument to parameter 'con' here static int prepare_read_data(struct cepn_connection *con) ^ net/ceph/messenger_v2.c:2938:12: error: static declaration of 'handle_epilogue' follows non-static declaration static int handle_epilogue(struct ceph_connection *con) ^ net/ceph/messenger_v2.c:1881:10: note: previous implicit declaration is here return handle_epilogue(con); ^ net/ceph/messenger_v2.c:3012:28: error: incompatible pointer types passing 'struct ceph_connection *' to parameter of type 'struct cepn_connection *' [-Werror,-Wincompatible-pointer-types] ret = prepare_read_data(con); ^~~ net/ceph/messenger_v2.c:1783:54: note: passing argument to parameter 'con' here static int prepare_read_data(struct cepn_connection *con) ^ net/ceph/messenger_v2.c:3014:8: error: use of undeclared identifier 'IN_S_PREPARE_READ_SPARSE_DATA' case IN_S_PREPARE_READ_SPARSE_DATA: ^ 1 warning and 10 errors generated. vim +1783 net/ceph/messenger_v2.c 1782 1784 { 1785 int ret; 1786 1787 con->in_data_crc = -1; 1788 ret = prepare_read_data_len(con, data_len(con->in_msg)); 1789 if (ret == 0) 1790 con->v2.in_state = IN_S_PREPARE_READ_DATA_CONT; 1791 return ret; 1792 } 1793 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org