Hi Thara, url: https://github.com/0day-ci/linux/commits/Thara-Gopinath/Introduce-warming... base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next config: x86_64-randconfig-m001-20200917 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; Reported-by: Dan Carpenter <dan.carpenter(a)oracle.com&gt; smatch warnings: drivers/thermal/thermal_core.c:436 handle_thermal_trip() error: uninitialized symbol 'mon_type'. # https://github.com/0day-ci/linux/commit/602ffc327f610db12c9657821c144d359... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Thara-Gopinath/Introduce-warming-in-thermal-framework/20200917-113050 git checkout 602ffc327f610db12c9657821c144d359c9d1f7f vim +/mon_type +436 drivers/thermal/thermal_core.c 0c01ebbfd3caf1d drivers/thermal/thermal_sys.c Durgadoss R 2012-09-18 417 static void handle_thermal_trip(struct thermal_zone_device *tz, int trip) 0c01ebbfd3caf1d drivers/thermal/thermal_sys.c Durgadoss R 2012-09-18 418 { 0c01ebbfd3caf1d drivers/thermal/thermal_sys.c Durgadoss R 2012-09-18 419 enum thermal_trip_type type; 602ffc327f610db drivers/thermal/thermal_core.c Thara Gopinath 2020-09-16 420 enum thermal_trip_monitor_type mon_type; 55cdf0a283b8760 drivers/thermal/thermal_core.c Daniel Lezcano 2020-07-06 421 int trip_temp, hyst = 0; 0c01ebbfd3caf1d drivers/thermal/thermal_sys.c Durgadoss R 2012-09-18 422 81ad4276b505e98 drivers/thermal/thermal_core.c Zhang Rui 2016-03-18 423 /* Ignore disabled trip points */ 81ad4276b505e98 drivers/thermal/thermal_core.c Zhang Rui 2016-03-18 424 if (test_bit(trip, &tz->trips_disabled)) 81ad4276b505e98 drivers/thermal/thermal_core.c Zhang Rui 2016-03-18 425 return; 81ad4276b505e98 drivers/thermal/thermal_core.c Zhang Rui 2016-03-18 426 55cdf0a283b8760 drivers/thermal/thermal_core.c Daniel Lezcano 2020-07-06 427 tz->ops->get_trip_temp(tz, trip, &trip_temp); 0c01ebbfd3caf1d drivers/thermal/thermal_sys.c Durgadoss R 2012-09-18 428 tz->ops->get_trip_type(tz, trip, &type); 55cdf0a283b8760 drivers/thermal/thermal_core.c Daniel Lezcano 2020-07-06 429 if (tz->ops->get_trip_hyst) 55cdf0a283b8760 drivers/thermal/thermal_core.c Daniel Lezcano 2020-07-06 430 tz->ops->get_trip_hyst(tz, trip, &hyst); 55cdf0a283b8760 drivers/thermal/thermal_core.c Daniel Lezcano 2020-07-06 431 602ffc327f610db drivers/thermal/thermal_core.c Thara Gopinath 2020-09-16 432 if (tz->ops->get_trip_mon_type) 602ffc327f610db drivers/thermal/thermal_core.c Thara Gopinath 2020-09-16 433 tz->ops->get_trip_mon_type(tz, trip, &mon_type); ^^^^^^^^^ Unintialized on else path 602ffc327f610db drivers/thermal/thermal_core.c Thara Gopinath 2020-09-16 434 55cdf0a283b8760 drivers/thermal/thermal_core.c Daniel Lezcano 2020-07-06 435 if (tz->last_temperature != THERMAL_TEMP_INVALID) { 602ffc327f610db drivers/thermal/thermal_core.c Thara Gopinath 2020-09-16 @436 if (mon_type == THERMAL_TRIP_MONITOR_FALLING) { ^^^^^^^^ 602ffc327f610db drivers/thermal/thermal_core.c Thara Gopinath 2020-09-16 437 if (tz->last_temperature > trip_temp && 602ffc327f610db drivers/thermal/thermal_core.c Thara Gopinath 2020-09-16 438 tz->temperature <= trip_temp) 602ffc327f610db drivers/thermal/thermal_core.c Thara Gopinath 2020-09-16 439 thermal_notify_tz_trip_down(tz->id, trip); 602ffc327f610db drivers/thermal/thermal_core.c Thara Gopinath 2020-09-16 440 if (tz->last_temperature <= trip_temp && 602ffc327f610db drivers/thermal/thermal_core.c Thara Gopinath 2020-09-16 441 tz->temperature > (trip_temp + hyst)) 602ffc327f610db drivers/thermal/thermal_core.c Thara Gopinath 2020-09-16 442 thermal_notify_tz_trip_up(tz->id, trip); 602ffc327f610db drivers/thermal/thermal_core.c Thara Gopinath 2020-09-16 443 } else { 55cdf0a283b8760 drivers/thermal/thermal_core.c Daniel Lezcano 2020-07-06 444 if (tz->last_temperature < trip_temp && 55cdf0a283b8760 drivers/thermal/thermal_core.c Daniel Lezcano 2020-07-06 445 tz->temperature >= trip_temp) 55cdf0a283b8760 drivers/thermal/thermal_core.c Daniel Lezcano 2020-07-06 446 thermal_notify_tz_trip_up(tz->id, trip); 55cdf0a283b8760 drivers/thermal/thermal_core.c Daniel Lezcano 2020-07-06 447 if (tz->last_temperature >= trip_temp && 55cdf0a283b8760 drivers/thermal/thermal_core.c Daniel Lezcano 2020-07-06 448 tz->temperature < (trip_temp - hyst)) 55cdf0a283b8760 drivers/thermal/thermal_core.c Daniel Lezcano 2020-07-06 449 thermal_notify_tz_trip_down(tz->id, trip); 55cdf0a283b8760 drivers/thermal/thermal_core.c Daniel Lezcano 2020-07-06 450 } 602ffc327f610db drivers/thermal/thermal_core.c Thara Gopinath 2020-09-16 451 } 0c01ebbfd3caf1d drivers/thermal/thermal_sys.c Durgadoss R 2012-09-18 452 0c01ebbfd3caf1d drivers/thermal/thermal_sys.c Durgadoss R 2012-09-18 453 if (type == THERMAL_TRIP_CRITICAL || type == THERMAL_TRIP_HOT) 0c01ebbfd3caf1d drivers/thermal/thermal_sys.c Durgadoss R 2012-09-18 454 handle_critical_trips(tz, trip, type); 0c01ebbfd3caf1d drivers/thermal/thermal_sys.c Durgadoss R 2012-09-18 455 else 5be52fccaf3d218 drivers/thermal/thermal_core.c Lukasz Luba 2018-10-15 456 handle_non_critical_trips(tz, trip); 0c01ebbfd3caf1d drivers/thermal/thermal_sys.c Durgadoss R 2012-09-18 457 /* 0c01ebbfd3caf1d drivers/thermal/thermal_sys.c Durgadoss R 2012-09-18 458 * Alright, we handled this trip successfully. 0c01ebbfd3caf1d drivers/thermal/thermal_sys.c Durgadoss R 2012-09-18 459 * So, start monitoring again. 0c01ebbfd3caf1d drivers/thermal/thermal_sys.c Durgadoss R 2012-09-18 460 */ 0c01ebbfd3caf1d drivers/thermal/thermal_sys.c Durgadoss R 2012-09-18 461 monitor_thermal_zone(tz); 0c01ebbfd3caf1d drivers/thermal/thermal_sys.c Durgadoss R 2012-09-18 462 } --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org