Hi Mirsad, kernel test robot noticed the following build warnings: [auto build test WARNING on linus/master] [also build test WARNING on v6.6-rc2 next-20230920] [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/Mirsad-Goran-Todorovac/acpica-use-spinlocks-to-fix-the-data-races-reported-by-the-KCSAN/20230920-080345 base: linus/master patch link: https://lore.kernel.org/r/20230920000139.15533-1-mirsad.todorovac%40alu.unizg.hr patch subject: [PATCH v1 1/1] acpica: use spinlocks to fix the data-races reported by the KCSAN config: i386-randconfig-003-20230920 (https://download.01.org/0day-ci/archive/20230920/202309201331.S2c1JL2h-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230920/202309201331.S2c1JL2h-lkp@xxxxxxxxx/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 <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202309201331.S2c1JL2h-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): drivers/acpi/acpica/utdebug.c: In function 'acpi_debug_print': >> drivers/acpi/acpica/utdebug.c:145:13: warning: unused variable 'nesting_level' [-Wunused-variable] 145 | u32 nesting_level; | ^~~~~~~~~~~~~ vim +/nesting_level +145 drivers/acpi/acpica/utdebug.c 113 114 /******************************************************************************* 115 * 116 * FUNCTION: acpi_debug_print 117 * 118 * PARAMETERS: requested_debug_level - Requested debug print level 119 * line_number - Caller's line number (for error output) 120 * function_name - Caller's procedure name 121 * module_name - Caller's module name 122 * component_id - Caller's component ID 123 * format - Printf format field 124 * ... - Optional printf arguments 125 * 126 * RETURN: None 127 * 128 * DESCRIPTION: Print error message with prefix consisting of the module name, 129 * line number, and component ID. 130 * 131 ******************************************************************************/ 132 133 void ACPI_INTERNAL_VAR_XFACE 134 acpi_debug_print(u32 requested_debug_level, 135 u32 line_number, 136 const char *function_name, 137 const char *module_name, 138 u32 component_id, const char *format, ...) 139 { 140 acpi_thread_id thread_id; 141 va_list args; 142 #ifdef ACPI_APPLICATION 143 int fill_count; 144 #endif > 145 u32 nesting_level; 146 147 /* Check if debug output enabled */ 148 149 if (!ACPI_IS_DEBUG_ENABLED(requested_debug_level, component_id)) { 150 return; 151 } 152 153 /* 154 * Thread tracking and context switch notification 155 */ 156 thread_id = acpi_os_get_thread_id(); 157 if (thread_id != acpi_gbl_previous_thread_id) { 158 if (ACPI_LV_THREADS & acpi_dbg_level) { 159 acpi_os_printf 160 ("\n**** Context Switch from TID %u to TID %u ****\n\n", 161 (u32)acpi_gbl_previous_thread_id, (u32)thread_id); 162 } 163 164 acpi_gbl_previous_thread_id = thread_id; 165 WRITE_ONCE(acpi_gbl_nesting_level, 0); 166 } 167 168 /* 169 * Display the module name, current line number, thread ID (if requested), 170 * current procedure nesting level, and the current procedure name 171 */ 172 acpi_os_printf("%9s-%04d ", module_name, line_number); 173 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
