Hi Andy, kernel test robot noticed the following build warnings:
[auto build test WARNING on rafael-pm/linux-next] [also build test WARNING on rafael-pm/bleeding-edge linus/master v7.0-rc4 next-20260316] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Andy-Shevchenko/ACPI-processor-idle-Replace-strlcat-with-better-alternative/20260317-014800 base: https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git linux-next patch link: https://lore.kernel.org/r/20260316170158.1596857-1-andriy.shevchenko%40linux.intel.com patch subject: [PATCH v1 1/1] ACPI: processor: idle: Replace strlcat() with better alternative config: x86_64-rhel-9.4 (https://download.01.org/0day-ci/archive/20260317/[email protected]/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260317/[email protected]/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All warnings (new ones prefixed by >>): drivers/acpi/processor_idle.c: In function 'flatten_lpi_states': >> drivers/acpi/processor_idle.c:1013:56: warning: 'snprintf' output may be >> truncated before the last format character [-Wformat-truncation=] 1013 | snprintf(result->desc, ACPI_CX_DESC_LEN, "%s+%s", local->desc, parent->desc); | ^ In function 'combine_lpi_states', inlined from 'flatten_lpi_states' at drivers/acpi/processor_idle.c:1059:8: drivers/acpi/processor_idle.c:1013:9: note: 'snprintf' output 2 or more bytes (assuming 33) into a destination of size 32 1013 | snprintf(result->desc, ACPI_CX_DESC_LEN, "%s+%s", local->desc, parent->desc); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/snprintf +1013 drivers/acpi/processor_idle.c 984 985 /** 986 * combine_lpi_states - combine local and parent LPI states to form a composite LPI state 987 * 988 * @local: local LPI state 989 * @parent: parent LPI state 990 * @result: composite LPI state 991 */ 992 static bool combine_lpi_states(struct acpi_lpi_state *local, 993 struct acpi_lpi_state *parent, 994 struct acpi_lpi_state *result) 995 { 996 if (parent->entry_method == ACPI_CSTATE_INTEGER) { 997 if (!parent->address) /* 0 means autopromotable */ 998 return false; 999 result->address = local->address + parent->address; 1000 } else { 1001 result->address = parent->address; 1002 } 1003 1004 result->min_residency = max(local->min_residency, parent->min_residency); 1005 result->wake_latency = local->wake_latency + parent->wake_latency; 1006 result->enable_parent_state = parent->enable_parent_state; 1007 result->entry_method = local->entry_method; 1008 1009 result->flags = parent->flags; 1010 result->arch_flags = parent->arch_flags; 1011 result->index = parent->index; 1012 > 1013 snprintf(result->desc, ACPI_CX_DESC_LEN, "%s+%s", local->desc, > parent->desc); 1014 return true; 1015 } 1016 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
