tree: https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git features head: 0d6d75d2a2c341ce99f0549fa28bee93fa56505d commit: 70aa5d39826528e77f5595a5f9297d919112d396 [20/21] s390/sclp: add tracing of SCLP interactions config: s390-buildonly-randconfig-r005-20210825 (attached as .config) compiler: s390-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/s390/linux.git/commit/?id=70aa5d39826528e77f5595a5f9297d919112d396 git remote add s390 https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git git fetch --no-tags s390 features git checkout 70aa5d39826528e77f5595a5f9297d919112d396 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=s390 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In function 'sclp_trace', inlined from 'sclp_trace_evbuf' at drivers/s390/char/sclp.c:141:2, inlined from 'sclp_dispatch_evbufs.isra' at drivers/s390/char/sclp.c:562:3: >> drivers/s390/char/sclp.c:84:9: warning: 'strncpy' output truncated before terminating nul copying 4 bytes from a string of the same length [-Wstringop-truncation] 84 | strncpy(e.id, id, sizeof(e.id)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In function 'sclp_trace', inlined from 'sclp_dispatch_state_change' at drivers/s390/char/sclp.c:794:4: >> drivers/s390/char/sclp.c:84:9: warning: 'strncpy' output truncated before terminating nul copying 4 bytes from a string of the same length [-Wstringop-truncation] 84 | strncpy(e.id, id, sizeof(e.id)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In function 'sclp_trace', inlined from 'sclp_trace_req' at drivers/s390/char/sclp.c:166:2, inlined from 'sclp_req_queue_timeout' at drivers/s390/char/sclp.c:373:4: >> drivers/s390/char/sclp.c:84:9: warning: 'strncpy' output truncated before terminating nul copying 4 bytes from a string of the same length [-Wstringop-truncation] 84 | strncpy(e.id, id, sizeof(e.id)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In function 'sclp_trace', inlined from 'sclp_trace_sccb' at drivers/s390/char/sclp.c:131:2, inlined from 'sclp_service_call_trace' at drivers/s390/char/sclp.c:393:2: >> drivers/s390/char/sclp.c:84:9: warning: 'strncpy' output truncated before terminating nul copying 4 bytes from a string of the same length [-Wstringop-truncation] 84 | strncpy(e.id, id, sizeof(e.id)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In function 'sclp_trace', inlined from 'sclp_service_call_trace' at drivers/s390/char/sclp.c:398:2: >> drivers/s390/char/sclp.c:84:9: warning: 'strncpy' output truncated before terminating nul copying 4 bytes from a string of the same length [-Wstringop-truncation] 84 | strncpy(e.id, id, sizeof(e.id)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In function 'sclp_trace', inlined from 'sclp_trace_req' at drivers/s390/char/sclp.c:166:2, inlined from 'sclp_process_queue' at drivers/s390/char/sclp.c:469:3: >> drivers/s390/char/sclp.c:84:9: warning: 'strncpy' output truncated before terminating nul copying 4 bytes from a string of the same length [-Wstringop-truncation] 84 | strncpy(e.id, id, sizeof(e.id)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In function 'sclp_trace', inlined from 'sclp_interrupt_handler' at drivers/s390/char/sclp.c:689:4: >> drivers/s390/char/sclp.c:84:9: warning: 'strncpy' output truncated before terminating nul copying 4 bytes from a string of the same length [-Wstringop-truncation] 84 | strncpy(e.id, id, sizeof(e.id)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In function 'sclp_trace', inlined from 'sclp_trace_req' at drivers/s390/char/sclp.c:166:2, inlined from 'sclp_interrupt_handler' at drivers/s390/char/sclp.c:680:4: >> drivers/s390/char/sclp.c:84:9: warning: 'strncpy' output truncated before terminating nul copying 4 bytes from a string of the same length [-Wstringop-truncation] 84 | strncpy(e.id, id, sizeof(e.id)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In function 'sclp_trace', inlined from 'sclp_add_request' at drivers/s390/char/sclp.c:505:2: >> drivers/s390/char/sclp.c:84:9: warning: 'strncpy' output truncated before terminating nul copying 4 bytes from a string of the same length [-Wstringop-truncation] 84 | strncpy(e.id, id, sizeof(e.id)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In function 'sclp_trace', inlined from 'sclp_sync_wait' at drivers/s390/char/sclp.c:721:2: >> drivers/s390/char/sclp.c:84:9: warning: 'strncpy' output truncated before terminating nul copying 4 bytes from a string of the same length [-Wstringop-truncation] 84 | strncpy(e.id, id, sizeof(e.id)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In function 'sclp_trace', inlined from 'sclp_sync_wait' at drivers/s390/char/sclp.c:762:2: >> drivers/s390/char/sclp.c:84:9: warning: 'strncpy' output truncated before terminating nul copying 4 bytes from a string of the same length [-Wstringop-truncation] 84 | strncpy(e.id, id, sizeof(e.id)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In function 'sclp_trace', inlined from 'sclp_trace_register' at drivers/s390/char/sclp.c:180:2, inlined from 'sclp_unregister' at drivers/s390/char/sclp.c:908:2: >> drivers/s390/char/sclp.c:84:9: warning: 'strncpy' output truncated before terminating nul copying 4 bytes from a string of the same length [-Wstringop-truncation] 84 | strncpy(e.id, id, sizeof(e.id)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/strncpy +84 drivers/s390/char/sclp.c 78 79 static inline void sclp_trace(int prio, char *id, u32 a, u64 b, bool err) 80 { 81 struct sclp_trace_entry e; 82 83 memset(&e, 0, sizeof(e)); > 84 strncpy(e.id, id, sizeof(e.id)); 85 e.a = a; 86 e.b = b; 87 debug_event(&sclp_debug, prio, &e, sizeof(e)); 88 if (err) 89 debug_event(&sclp_debug_err, 0, &e, sizeof(e)); 90 } 91 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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