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: x86_64-randconfig-a015 (https://download.01.org/0day-ci/archive/20220211/202202111451.CXV1VUqM-lk...) 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/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 make W=1 O=build_dir ARCH=x86_64 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 >>): 1783 | static int prepare_read_data(struct cepn_connection *con) | ^~~~~~~~~~~~~~~ net/ceph/messenger_v2.c: In function 'prepare_read_data': net/ceph/messenger_v2.c:1787:5: error: dereferencing pointer to incomplete type 'struct cepn_connection' 1787 | con->in_data_crc = -1; | ^~ net/ceph/messenger_v2.c:1788:30: error: passing argument 1 of 'prepare_read_data_len' from incompatible pointer type [-Werror=incompatible-pointer-types] 1788 | ret = prepare_read_data_len(con, data_len(con->in_msg)); | ^~~ | | | struct cepn_connection * net/ceph/messenger_v2.c:1759:58: note: expected 'struct ceph_connection *' but argument is of type 'struct cepn_connection *' 1759 | static int prepare_read_data_len(struct ceph_connection *con, int len) | ~~~~~~~~~~~~~~~~~~~~~~~~^~~ net/ceph/messenger_v2.c: In function 'prepare_sparse_read_data_cont': net/ceph/messenger_v2.c:1842:24: error: 'iter' undeclared (first use in this function) 1842 | if (!iov_iter_is_bvec(iter)) | ^~~~ net/ceph/messenger_v2.c:1842:24: note: each undeclared identifier is reported only once for each function it appears in net/ceph/messenger_v2.c:1881:10: error: implicit declaration of function 'handle_epilogue'; did you mean 'decode_epilogue'? [-Werror=implicit-function-declaration] 1881 | return handle_epilogue(con); | ^~~~~~~~~~~~~~~ | decode_epilogue net/ceph/messenger_v2.c:1839:19: warning: unused variable 'in_iter' [-Wunused-variable] 1839 | struct iov_iter *in_iter = &con->v2.in_iter; | ^~~~~~~ net/ceph/messenger_v2.c: In function 'prepare_sparse_read_header': net/ceph/messenger_v2.c:1898:24: error: 'iter' undeclared (first use in this function) 1898 | if (!iov_iter_is_kvec(iter)) | ^~~~ net/ceph/messenger_v2.c:1895:19: warning: unused variable 'in_iter' [-Wunused-variable] 1895 | struct iov_iter *in_iter = &con->v2.in_iter; | ^~~~~~~ net/ceph/messenger_v2.c:1893:17: warning: unused variable 'bv' [-Wunused-variable] 1893 | struct bio_vec bv; | ^~ net/ceph/messenger_v2.c: In function 'prepare_read_tail_plain': net/ceph/messenger_v2.c:1951:28: error: passing argument 1 of 'prepare_read_data' from incompatible pointer type [-Werror=incompatible-pointer-types] 1951 | return prepare_read_data(con); | ^~~ | | | struct ceph_connection * net/ceph/messenger_v2.c:1783:54: note: expected 'struct cepn_connection *' but argument is of type 'struct ceph_connection *' 1783 | static int prepare_read_data(struct cepn_connection *con) | ~~~~~~~~~~~~~~~~~~~~~~~~^~~ net/ceph/messenger_v2.c: At top level: net/ceph/messenger_v2.c:2938:12: error: static declaration of 'handle_epilogue' follows non-static declaration 2938 | static int handle_epilogue(struct ceph_connection *con) | ^~~~~~~~~~~~~~~ net/ceph/messenger_v2.c:1881:10: note: previous implicit declaration of 'handle_epilogue' was here 1881 | return handle_epilogue(con); | ^~~~~~~~~~~~~~~ net/ceph/messenger_v2.c: In function 'populate_in_iter': net/ceph/messenger_v2.c:3012:28: error: passing argument 1 of 'prepare_read_data' from incompatible pointer type [-Werror=incompatible-pointer-types] 3012 | ret = prepare_read_data(con); | ^~~ | | | struct ceph_connection * net/ceph/messenger_v2.c:1783:54: note: expected 'struct cepn_connection *' but argument is of type 'struct ceph_connection *' 1783 | static int prepare_read_data(struct cepn_connection *con) | ~~~~~~~~~~~~~~~~~~~~~~~~^~~ net/ceph/messenger_v2.c:3014:8: error: 'IN_S_PREPARE_READ_SPARSE_DATA' undeclared (first use in this function); did you mean 'IN_S_PREPARE_SPARSE_DATA'? 3014 | case IN_S_PREPARE_READ_SPARSE_DATA: | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | IN_S_PREPARE_SPARSE_DATA At top level: net/ceph/messenger_v2.c:1834:12: warning: 'prepare_sparse_read_data_cont' defined but not used [-Wunused-function] 1834 | static int prepare_sparse_read_data_cont(struct ceph_connection *con) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors 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