Messages in this thread | | | Date | Tue, 22 Feb 2022 02:24:29 +0800 | From | kernel test robot <> | Subject | [ammarfaizi2-block:rostedt/linux-trace/for-next 19/32] kernel/trace/trace_events_synth.c:65:9: warning: 'strncpy' specified bound depends on the length of the source argument |
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tree: https://github.com/ammarfaizi2/linux-block rostedt/linux-trace/for-next head: 864ea0e10cc90416a01b46f0d47a6f26dc020820 commit: 27c888da9867725784bad3d6455d6e53b425fa2b [19/32] tracing: Remove size restriction on synthetic event cmd error logging config: arm-randconfig-r022-20220221 (https://download.01.org/0day-ci/archive/20220222/202202220258.LyXgZyyT-lkp@intel.com/config) compiler: arm-linux-gnueabi-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://github.com/ammarfaizi2/linux-block/commit/27c888da9867725784bad3d6455d6e53b425fa2b git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block git fetch --no-tags ammarfaizi2-block rostedt/linux-trace/for-next git checkout 27c888da9867725784bad3d6455d6e53b425fa2b # 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=arm 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' specified bound depends on the length of the source argument [-Wstringop-truncation] 65 | strncpy(last_cmd, str, strlen(str) + 1); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ kernel/trace/trace_events_synth.c:65:32: note: length computed here 65 | strncpy(last_cmd, str, strlen(str) + 1); | ^~~~~~~~~~~
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) + 1); 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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