tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: f8e6dfc64f6135d1b6c5215c14cd30b9b60a0008 commit: d86481e924a7d6e8a40477ffa98077c6c0d77ed5 nvmet: use min of device_path and disk len date: 6 months ago config: powerpc-randconfig-c023-20210812 (attached as .config) compiler: powerpc-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/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout d86481e924a7d6e8a40477ffa98077c6c0d77ed5 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=powerpc 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 >>): In file included from drivers/nvme/target/core.c:14: In function '__assign_req_name', inlined from 'trace_event_raw_event_nvmet_req_init' at drivers/nvme/target/./trace.h:61:1: 56 | strncpy(name, req->ns->device_path, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 57 | min_t(size_t, DISK_NAME_LEN, strlen(req->ns->device_path))); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from include/linux/kernel.h:14, from include/linux/list.h:9, from include/linux/module.h:12, from drivers/nvme/target/core.c:7: drivers/nvme/target/./trace.h: In function 'trace_event_raw_event_nvmet_req_init': drivers/nvme/target/trace.h:57:46: note: length computed here 57 | min_t(size_t, DISK_NAME_LEN, strlen(req->ns->device_path))); include/linux/minmax.h:38:39: note: in definition of macro '__cmp_once' 38 | typeof(y) unique_y = (y); \ | ^ include/linux/minmax.h:110:33: note: in expansion of macro '__careful_cmp' 110 | #define min_t(type, x, y) __careful_cmp((type)(x), (type)(y), <) | ^~~~~~~~~~~~~ drivers/nvme/target/trace.h:57:17: note: in expansion of macro 'min_t' 57 | min_t(size_t, DISK_NAME_LEN, strlen(req->ns->device_path))); | ^~~~~ In file included from drivers/nvme/target/core.c:14: In function '__assign_req_name', inlined from 'trace_event_raw_event_nvmet_req_complete' at drivers/nvme/target/./trace.h:103:1: 56 | strncpy(name, req->ns->device_path, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 57 | min_t(size_t, DISK_NAME_LEN, strlen(req->ns->device_path))); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from include/linux/kernel.h:14, from include/linux/list.h:9, from include/linux/module.h:12, from drivers/nvme/target/core.c:7: drivers/nvme/target/./trace.h: In function 'trace_event_raw_event_nvmet_req_complete': drivers/nvme/target/trace.h:57:46: note: length computed here 57 | min_t(size_t, DISK_NAME_LEN, strlen(req->ns->device_path))); include/linux/minmax.h:38:39: note: in definition of macro '__cmp_once' 38 | typeof(y) unique_y = (y); \ | ^ include/linux/minmax.h:110:33: note: in expansion of macro '__careful_cmp' 110 | #define min_t(type, x, y) __careful_cmp((type)(x), (type)(y), <) | ^~~~~~~~~~~~~ drivers/nvme/target/trace.h:57:17: note: in expansion of macro 'min_t' 57 | min_t(size_t, DISK_NAME_LEN, strlen(req->ns->device_path))); | ^~~~~ vim +/strncpy +56 drivers/nvme/target/trace.h 48 49 static inline void __assign_req_name(char *name, struct nvmet_req *req) 50 { 51 if (!req->ns) { 52 memset(name, 0, DISK_NAME_LEN); 53 return; 54 } 55 57 min_t(size_t, DISK_NAME_LEN, strlen(req->ns->device_path))); 58 } 59 #endif 60 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org