Messages in this thread | | | Date | Fri, 28 Jan 2022 11:07:33 +0800 | From | kernel test robot <> | Subject | [zanussi-trace:ftrace/misc-bugfixes-v1 7/7] kernel/trace/trace_events_synth.c:65:9: warning: 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/zanussi/linux-trace.git ftrace/misc-bugfixes-v1 head: a291c672d6e1d7f557d9e15a5ac3f0b446e29dcd commit: a291c672d6e1d7f557d9e15a5ac3f0b446e29dcd [7/7] tracing: Remove size restriction on synthetic event cmd error logging config: sparc-allyesconfig (https://download.01.org/0day-ci/archive/20220128/202201281113.KBRwLvOv-lkp@intel.com/config) compiler: sparc64-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/zanussi/linux-trace.git/commit/?id=a291c672d6e1d7f557d9e15a5ac3f0b446e29dcd git remote add zanussi-trace https://git.kernel.org/pub/scm/linux/kernel/git/zanussi/linux-trace.git git fetch --no-tags zanussi-trace ftrace/misc-bugfixes-v1 git checkout a291c672d6e1d7f557d9e15a5ac3f0b446e29dcd # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=sparc SHELL=/bin/bash kernel/trace/
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
kernel/trace/trace_events_synth.c: In function 'last_cmd_set': >> kernel/trace/trace_events_synth.c:65:9: warning: 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length [-Wstringop-truncation] 65 | strncpy(last_cmd, str, strlen(str)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +/strncpy +65 kernel/trace/trace_events_synth.c
54 55 static void last_cmd_set(const char *str) 56 { 57 if (!str) 58 return; 59 60 kfree(last_cmd); 61 last_cmd = kzalloc(strlen(str) + 1, GFP_KERNEL); 62 if (!last_cmd) 63 return; 64 > 65 strncpy(last_cmd, str, strlen(str)); 66 } 67
--- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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