tree: https://github.com/norov/linux bm-new head: b529d6ec834c582d88d8f1286490bb69ee4bedb2 commit: d9365a115ddda67b4bbe080adf3919f32b9a36c4 [13/15] kernel/cpu: add num_active_cpu counter config: arm64-randconfig-r005-20211208 (https://download.01.org/0day-ci/archive/20211209/202112092257.dQgv78Nx-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 097a1cb1d5ebb3a0ec4bcaed8ba3ff6a8e33c00a) 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 # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://github.com/norov/linux/commit/d9365a115ddda67b4bbe080adf3919f32b9... git remote add norov https://github.com/norov/linux git fetch --no-tags norov bm-new git checkout d9365a115ddda67b4bbe080adf3919f32b9a36c4 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; Note: the norov/bm-new HEAD b529d6ec834c582d88d8f1286490bb69ee4bedb2 builds fine. It only hurts bisectability. All errors (new ones prefixed by >>): static atomic_t num_active_cpus = ATOMIC_INIT(0); ^ include/linux/cpumask.h:979:28: note: previous definition is here static inline unsigned int num_active_cpus(void) ^ atomic_add(is_active ? 1 : -1, &num_active_cpus); ^~~~~~~~~~~~~~~~ include/linux/atomic/atomic-instrumented.h:54:29: note: passing argument to parameter 'v' here atomic_add(int i, atomic_t *v) ^ active_cpus = atomic_read(&num_active_cpus); ^~~~~~~~~~~~~~~~ include/linux/atomic/atomic-instrumented.h:25:29: note: passing argument to parameter 'v' here atomic_read(const atomic_t *v) ^ 3 errors generated. vim +/num_active_cpus +42 drivers/leds/trigger/ledtrig-cpu.c 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 40 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 41 static struct led_trigger *trig_cpu_all; 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 @42 static atomic_t num_active_cpus = ATOMIC_INIT(0); 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 43 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 44 /** 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 45 * ledtrig_cpu - emit a CPU event as a trigger c10074a1e5809e drivers/leds/trigger/ledtrig-cpu.c Lee Jones 2021-05-28 46 * @ledevt: CPU event to be emitted 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 47 * 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 48 * Emit a CPU event on a CPU core, which will trigger a e602fda1a358a0 drivers/leds/trigger/ledtrig-cpu.c Pavel Machek 2016-10-03 49 * bound LED to turn on or turn off. 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 50 */ 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 51 void ledtrig_cpu(enum cpu_led_event ledevt) 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 52 { 24c9301ffd2135 drivers/leds/trigger/ledtrig-cpu.c Christoph Lameter 2014-05-05 53 struct led_trigger_cpu *trig = this_cpu_ptr(&cpu_trig); 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 54 bool is_active = trig->is_active; 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 55 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 56 /* Locate the correct CPU LED */ 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 57 switch (ledevt) { 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 58 case CPU_LED_IDLE_END: 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 59 case CPU_LED_START: 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 60 /* Will turn the LED on, max brightness */ 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 61 is_active = true; 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 62 break; 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 63 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 64 case CPU_LED_IDLE_START: 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 65 case CPU_LED_STOP: 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 66 case CPU_LED_HALTED: 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 67 /* Will turn the LED off */ 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 68 is_active = false; 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 69 break; 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 70 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 71 default: 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 72 /* Will leave the LED as it is */ 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 73 break; 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 74 } 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 75 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 76 if (is_active != trig->is_active) { 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 77 unsigned int active_cpus; 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 78 unsigned int total_cpus; 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 79 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 80 /* Update trigger state */ 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 81 trig->is_active = is_active; 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 @82 atomic_add(is_active ? 1 : -1, &num_active_cpus); 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 @83 active_cpus = atomic_read(&num_active_cpus); 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 84 total_cpus = num_present_cpus(); 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 85 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 86 led_trigger_event(trig->_trig, 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 87 is_active ? LED_FULL : LED_OFF); 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 88 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 89 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 90 led_trigger_event(trig_cpu_all, 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 91 DIV_ROUND_UP(LED_FULL * active_cpus, total_cpus)); 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 92 0b88b71c7762a4 drivers/leds/trigger/ledtrig-cpu.c Paulo Costa 2017-02-09 93 } 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 94 } 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 95 EXPORT_SYMBOL(ledtrig_cpu); 8f88731d052d2b drivers/leds/ledtrig-cpu.c Bryan Wu 2011-06-25 96 :::::: The code at line 42 was first introduced by commit :::::: 0b88b71c7762a406ff99c625935474dc42a25003 leds/trigger/cpu: Add LED trigger for all CPUs aggregated :::::: TO: Paulo Costa <me(a)paulo.costa.nom.br&gt; :::::: CC: Jacek Anaszewski <jacek.anaszewski(a)gmail.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org