:::::: :::::: Manual check reason: "low confidence bisect report" :::::: Manual check reason: "only Kconfig file updated" :::::: Manual check reason: "low confidence static check first_new_problem: drivers/hwmon/asb100.c:579:23: warning: use of uninitialized value '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value]" ::::::
BCC: l...@intel.com CC: kbuild-...@lists.01.org CC: linux-ker...@vger.kernel.org TO: "Uwe Kleine-König" <u.kleine-koe...@pengutronix.de> CC: Guenter Roeck <li...@roeck-us.net> CC: Jean Delvare <jdelv...@suse.de> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 6614a3c3164a5df2b54abb0b3559f51041cf705b commit: b97adb596399581df42a5f94e14235359f150373 hwmon: Allow to compile ASB100 and FSCHMD on !X86 date: 3 weeks ago :::::: branch date: 20 hours ago :::::: commit date: 3 weeks ago config: arm-randconfig-c002-20220804 (https://download.01.org/0day-ci/archive/20220807/202208070327.sgrcpnyl-...@intel.com/config) compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0 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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b97adb596399581df42a5f94e14235359f150373 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout b97adb596399581df42a5f94e14235359f150373 # save the config file COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross ARCH=arm KBUILD_USERCFLAGS='-fanalyzer -Wno-error' If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <l...@intel.com> gcc-analyzer warnings: (new ones prefixed by >>) drivers/hwmon/asb100.c: In function 'pwm1_enable_store': >> drivers/hwmon/asb100.c:579:23: warning: use of uninitialized value >> '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value] 579 | unsigned long val; | ^~~ 'pwm1_enable_store': event 1 | | 579 | unsigned long val; | | ^~~ | | | | | (1) use of uninitialized value '<unknown>' here | In file included from include/linux/bitops.h:7, from include/linux/log2.h:12, from include/asm-generic/div64.h:55, from arch/arm/include/asm/div64.h:107, from include/linux/math.h:6, from include/linux/math64.h:6, from include/linux/time.h:6, from include/linux/stat.h:19, from include/linux/module.h:13, from drivers/hwmon/asb100.c:28: drivers/hwmon/asb100.c: In function 'asb100_update_device': include/linux/typecheck.h:11:19: warning: use of uninitialized value '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value] 11 | typeof(x) __dummy2; \ | ^~~~~~~~ include/linux/jiffies.h:105:10: note: in expansion of macro 'typecheck' 105 | (typecheck(unsigned long, a) && \ | ^~~~~~~~~ drivers/hwmon/asb100.c:945:13: note: in expansion of macro 'time_after' 945 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | ^~~~~~~~~~ 'asb100_update_device': event 1 | |include/linux/typecheck.h:11:19: | 11 | typeof(x) __dummy2; \ | | ^~~~~~~~ | | | | | (1) use of uninitialized value '<unknown>' here include/linux/jiffies.h:105:10: note: in expansion of macro 'typecheck' | 105 | (typecheck(unsigned long, a) && \ | | ^~~~~~~~~ drivers/hwmon/asb100.c:945:13: note: in expansion of macro 'time_after' | 945 | if (time_after(jiffies, data->last_updated + HZ + HZ / 2) | | ^~~~~~~~~~ | -- drivers/hwmon/fschmd.c: In function 'temp_max_store': >> drivers/hwmon/fschmd.c:362:14: warning: use of uninitialized value >> '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value] 362 | long v; | ^ 'temp_max_store': event 1 | | 362 | long v; | | ^ | | | | | (1) use of uninitialized value '<unknown>' here | drivers/hwmon/fschmd.c: In function 'fan_div_store': drivers/hwmon/fschmd.c:436:23: warning: use of uninitialized value '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value] 436 | unsigned long v; | ^ 'fan_div_store': event 1 | | 436 | unsigned long v; | | ^ | | | | | (1) use of uninitialized value '<unknown>' here | drivers/hwmon/fschmd.c: In function 'pwm_auto_point1_pwm_store': drivers/hwmon/fschmd.c:525:23: warning: use of uninitialized value '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value] 525 | unsigned long v; | ^ 'pwm_auto_point1_pwm_store': event 1 | | 525 | unsigned long v; | | ^ | | | | | (1) use of uninitialized value '<unknown>' here | drivers/hwmon/fschmd.c: In function 'alert_led_store': drivers/hwmon/fschmd.c:570:23: warning: use of uninitialized value '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value] 570 | unsigned long v; | ^ 'alert_led_store': event 1 | | 570 | unsigned long v; | | ^ | | | | | (1) use of uninitialized value '<unknown>' here | In file included from include/linux/bitops.h:7, from include/linux/log2.h:12, from include/asm-generic/div64.h:55, from arch/arm/include/asm/div64.h:107, from include/linux/math.h:6, from include/linux/math64.h:6, from include/linux/time.h:6, from include/linux/stat.h:19, from include/linux/module.h:13, from drivers/hwmon/fschmd.c:22: drivers/hwmon/fschmd.c: In function 'fschmd_update_device': include/linux/typecheck.h:11:19: warning: use of uninitialized value '<unknown>' [CWE-457] [-Wanalyzer-use-of-uninitialized-value] 11 | typeof(x) __dummy2; \ | ^~~~~~~~ include/linux/jiffies.h:105:10: note: in expansion of macro 'typecheck' 105 | (typecheck(unsigned long, a) && \ | ^~~~~~~~~ drivers/hwmon/fschmd.c:1306:13: note: in expansion of macro 'time_after' 1306 | if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { | ^~~~~~~~~~ 'fschmd_update_device': event 1 | |include/linux/typecheck.h:11:19: | 11 | typeof(x) __dummy2; \ | | ^~~~~~~~ | | | | | (1) use of uninitialized value '<unknown>' here include/linux/jiffies.h:105:10: note: in expansion of macro 'typecheck' | 105 | (typecheck(unsigned long, a) && \ | | ^~~~~~~~~ drivers/hwmon/fschmd.c:1306:13: note: in expansion of macro 'time_after' | 1306 | if (time_after(jiffies, data->last_updated + 2 * HZ) || !data->valid) { | | ^~~~~~~~~~ | vim +579 drivers/hwmon/asb100.c ^1da177e4c3f41 drivers/i2c/chips/asb100.c Linus Torvalds 2005-04-16 572 82e73f7f953877 drivers/hwmon/asb100.c Julia Lawall 2016-12-22 573 static ssize_t pwm1_enable_store(struct device *dev, 82e73f7f953877 drivers/hwmon/asb100.c Julia Lawall 2016-12-22 574 struct device_attribute *attr, 82e73f7f953877 drivers/hwmon/asb100.c Julia Lawall 2016-12-22 575 const char *buf, size_t count) ^1da177e4c3f41 drivers/i2c/chips/asb100.c Linus Torvalds 2005-04-16 576 { ^1da177e4c3f41 drivers/i2c/chips/asb100.c Linus Torvalds 2005-04-16 577 struct i2c_client *client = to_i2c_client(dev); ^1da177e4c3f41 drivers/i2c/chips/asb100.c Linus Torvalds 2005-04-16 578 struct asb100_data *data = i2c_get_clientdata(client); 8c103696fa59e1 drivers/hwmon/asb100.c Guenter Roeck 2012-01-14 @579 unsigned long val; 8c103696fa59e1 drivers/hwmon/asb100.c Guenter Roeck 2012-01-14 580 int err; 8c103696fa59e1 drivers/hwmon/asb100.c Guenter Roeck 2012-01-14 581 8c103696fa59e1 drivers/hwmon/asb100.c Guenter Roeck 2012-01-14 582 err = kstrtoul(buf, 10, &val); 8c103696fa59e1 drivers/hwmon/asb100.c Guenter Roeck 2012-01-14 583 if (err) 8c103696fa59e1 drivers/hwmon/asb100.c Guenter Roeck 2012-01-14 584 return err; ^1da177e4c3f41 drivers/i2c/chips/asb100.c Linus Torvalds 2005-04-16 585 9a61bf6300533d drivers/hwmon/asb100.c Ingo Molnar 2006-01-18 586 mutex_lock(&data->update_lock); ^1da177e4c3f41 drivers/i2c/chips/asb100.c Linus Torvalds 2005-04-16 587 data->pwm &= 0x0f; /* keep the duty cycle bits */ ^1da177e4c3f41 drivers/i2c/chips/asb100.c Linus Torvalds 2005-04-16 588 data->pwm |= (val ? 0x80 : 0x00); ^1da177e4c3f41 drivers/i2c/chips/asb100.c Linus Torvalds 2005-04-16 589 asb100_write_value(client, ASB100_REG_PWM1, data->pwm); 9a61bf6300533d drivers/hwmon/asb100.c Ingo Molnar 2006-01-18 590 mutex_unlock(&data->update_lock); ^1da177e4c3f41 drivers/i2c/chips/asb100.c Linus Torvalds 2005-04-16 591 return count; ^1da177e4c3f41 drivers/i2c/chips/asb100.c Linus Torvalds 2005-04-16 592 } ^1da177e4c3f41 drivers/i2c/chips/asb100.c Linus Torvalds 2005-04-16 593 :::::: The code at line 579 was first introduced by commit :::::: 8c103696fa59e1b810bf24a63304acd5ab585c12 hwmon: (asb100): Fix checkpatch issues :::::: TO: Guenter Roeck <li...@roeck-us.net> :::::: CC: Guenter Roeck <guenter.ro...@ericsson.com> -- 0-DAY CI Kernel Test Service https://01.org/lkp _______________________________________________ kbuild mailing list -- kbuild@lists.01.org To unsubscribe send an email to kbuild-le...@lists.01.org
