Hi Paul, url: https://github.com/0day-ci/linux/commits/Paul-Cercueil/hwmon-Add-label-attribute-v2/20220105-231930 base: https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next config: i386-randconfig-m021-20220105 (https://download.01.org/0day-ci/archive/20220108/202201081730.TlHZabuC-lkp@xxxxxxxxx/config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> smatch warnings: drivers/hwmon/hwmon.c:851 __hwmon_device_register() error: uninitialized symbol 'hdev'. drivers/hwmon/hwmon.c:854 __hwmon_device_register() warn: possible memory leak of 'hwdev' vim +/hdev +851 drivers/hwmon/hwmon.c d560168b5d0fb4 Guenter Roeck 2015-08-26 745 static struct device * d560168b5d0fb4 Guenter Roeck 2015-08-26 746 __hwmon_device_register(struct device *dev, const char *name, void *drvdata, d560168b5d0fb4 Guenter Roeck 2015-08-26 747 const struct hwmon_chip_info *chip, bab2243ce18978 Guenter Roeck 2013-07-06 748 const struct attribute_group **groups) 1236441f38b6a9 Mark M. Hoffman 2005-07-15 749 { bab2243ce18978 Guenter Roeck 2013-07-06 750 struct hwmon_device *hwdev; 57dab49995d01d Paul Cercueil 2022-01-05 751 const char *label; d560168b5d0fb4 Guenter Roeck 2015-08-26 752 struct device *hdev; 44e3ad882bb268 Akinobu Mita 2020-05-04 753 int i, err, id; ded2b666156130 Mark M. Hoffman 2006-03-05 754 74d3b6419772e4 Guenter Roeck 2017-01-27 755 /* Complain about invalid characters in hwmon name attribute */ 648cd48c9e566f Guenter Roeck 2014-02-28 756 if (name && (!strlen(name) || strpbrk(name, "-* \t\n"))) 74d3b6419772e4 Guenter Roeck 2017-01-27 757 dev_warn(dev, 74d3b6419772e4 Guenter Roeck 2017-01-27 758 "hwmon: '%s' is not a valid name attribute, please fix\n", 74d3b6419772e4 Guenter Roeck 2017-01-27 759 name); 648cd48c9e566f Guenter Roeck 2014-02-28 760 4ca5f468cc2a0b Jonathan Cameron 2011-10-31 761 id = ida_simple_get(&hwmon_ida, 0, 0, GFP_KERNEL); 4ca5f468cc2a0b Jonathan Cameron 2011-10-31 762 if (id < 0) 4ca5f468cc2a0b Jonathan Cameron 2011-10-31 763 return ERR_PTR(id); 1236441f38b6a9 Mark M. Hoffman 2005-07-15 764 bab2243ce18978 Guenter Roeck 2013-07-06 765 hwdev = kzalloc(sizeof(*hwdev), GFP_KERNEL); bab2243ce18978 Guenter Roeck 2013-07-06 766 if (hwdev == NULL) { bab2243ce18978 Guenter Roeck 2013-07-06 767 err = -ENOMEM; bab2243ce18978 Guenter Roeck 2013-07-06 768 goto ida_remove; bab2243ce18978 Guenter Roeck 2013-07-06 769 } 1236441f38b6a9 Mark M. Hoffman 2005-07-15 770 57dab49995d01d Paul Cercueil 2022-01-05 771 if (device_property_present(dev, "label")) { 57dab49995d01d Paul Cercueil 2022-01-05 772 err = device_property_read_string(dev, "label", &label); 57dab49995d01d Paul Cercueil 2022-01-05 773 if (err < 0) 57dab49995d01d Paul Cercueil 2022-01-05 774 goto free_hwmon; "hwdev" not freed on this goto path and "hdev" is uninitialized. Sort of related bugs. 57dab49995d01d Paul Cercueil 2022-01-05 775 57dab49995d01d Paul Cercueil 2022-01-05 776 hwdev->label = kstrdup(label, GFP_KERNEL); 57dab49995d01d Paul Cercueil 2022-01-05 777 if (hwdev->label == NULL) { 57dab49995d01d Paul Cercueil 2022-01-05 778 err = -ENOMEM; 57dab49995d01d Paul Cercueil 2022-01-05 779 goto free_hwmon; 57dab49995d01d Paul Cercueil 2022-01-05 780 } 57dab49995d01d Paul Cercueil 2022-01-05 781 } 57dab49995d01d Paul Cercueil 2022-01-05 782 d560168b5d0fb4 Guenter Roeck 2015-08-26 783 hdev = &hwdev->dev; d560168b5d0fb4 Guenter Roeck 2015-08-26 784 239552f495b91f Guenter Roeck 2016-10-16 785 if (chip) { d560168b5d0fb4 Guenter Roeck 2015-08-26 786 struct attribute **attrs; b2a4cc3a060da0 Guenter Roeck 2016-10-16 787 int ngroups = 2; /* terminating NULL plus &hwdev->groups */ d560168b5d0fb4 Guenter Roeck 2015-08-26 788 d560168b5d0fb4 Guenter Roeck 2015-08-26 789 if (groups) d560168b5d0fb4 Guenter Roeck 2015-08-26 790 for (i = 0; groups[i]; i++) d560168b5d0fb4 Guenter Roeck 2015-08-26 791 ngroups++; d560168b5d0fb4 Guenter Roeck 2015-08-26 792 3bf8bdcf3bada7 Guenter Roeck 2020-01-16 793 hwdev->groups = kcalloc(ngroups, sizeof(*groups), GFP_KERNEL); 38d8ed65092ed2 Colin Ian King 2016-10-23 794 if (!hwdev->groups) { 38d8ed65092ed2 Colin Ian King 2016-10-23 795 err = -ENOMEM; 38d8ed65092ed2 Colin Ian King 2016-10-23 796 goto free_hwmon; 38d8ed65092ed2 Colin Ian King 2016-10-23 797 } d560168b5d0fb4 Guenter Roeck 2015-08-26 798 3bf8bdcf3bada7 Guenter Roeck 2020-01-16 799 attrs = __hwmon_create_attrs(drvdata, chip); d560168b5d0fb4 Guenter Roeck 2015-08-26 800 if (IS_ERR(attrs)) { d560168b5d0fb4 Guenter Roeck 2015-08-26 801 err = PTR_ERR(attrs); d560168b5d0fb4 Guenter Roeck 2015-08-26 802 goto free_hwmon; d560168b5d0fb4 Guenter Roeck 2015-08-26 803 } d560168b5d0fb4 Guenter Roeck 2015-08-26 804 d560168b5d0fb4 Guenter Roeck 2015-08-26 805 hwdev->group.attrs = attrs; d560168b5d0fb4 Guenter Roeck 2015-08-26 806 ngroups = 0; d560168b5d0fb4 Guenter Roeck 2015-08-26 807 hwdev->groups[ngroups++] = &hwdev->group; d560168b5d0fb4 Guenter Roeck 2015-08-26 808 d560168b5d0fb4 Guenter Roeck 2015-08-26 809 if (groups) { d560168b5d0fb4 Guenter Roeck 2015-08-26 810 for (i = 0; groups[i]; i++) d560168b5d0fb4 Guenter Roeck 2015-08-26 811 hwdev->groups[ngroups++] = groups[i]; d560168b5d0fb4 Guenter Roeck 2015-08-26 812 } d560168b5d0fb4 Guenter Roeck 2015-08-26 813 d560168b5d0fb4 Guenter Roeck 2015-08-26 814 hdev->groups = hwdev->groups; d560168b5d0fb4 Guenter Roeck 2015-08-26 815 } else { d560168b5d0fb4 Guenter Roeck 2015-08-26 816 hdev->groups = groups; d560168b5d0fb4 Guenter Roeck 2015-08-26 817 } d560168b5d0fb4 Guenter Roeck 2015-08-26 818 bab2243ce18978 Guenter Roeck 2013-07-06 819 hwdev->name = name; d560168b5d0fb4 Guenter Roeck 2015-08-26 820 hdev->class = &hwmon_class; d560168b5d0fb4 Guenter Roeck 2015-08-26 821 hdev->parent = dev; d560168b5d0fb4 Guenter Roeck 2015-08-26 822 hdev->of_node = dev ? dev->of_node : NULL; d560168b5d0fb4 Guenter Roeck 2015-08-26 823 hwdev->chip = chip; d560168b5d0fb4 Guenter Roeck 2015-08-26 824 dev_set_drvdata(hdev, drvdata); d560168b5d0fb4 Guenter Roeck 2015-08-26 825 dev_set_name(hdev, HWMON_ID_FORMAT, id); d560168b5d0fb4 Guenter Roeck 2015-08-26 826 err = device_register(hdev); ada61aa0b1184a Yang Yingliang 2021-10-12 827 if (err) { ada61aa0b1184a Yang Yingliang 2021-10-12 828 put_device(hdev); ada61aa0b1184a Yang Yingliang 2021-10-12 829 goto ida_remove; ada61aa0b1184a Yang Yingliang 2021-10-12 830 } d560168b5d0fb4 Guenter Roeck 2015-08-26 831 1597b374af2226 Guenter Roeck 2020-05-28 832 INIT_LIST_HEAD(&hwdev->tzdata); 1597b374af2226 Guenter Roeck 2020-05-28 833 c41dd48e21fae3 Eduardo Valentin 2019-05-29 834 if (dev && dev->of_node && chip && chip->ops->read && d560168b5d0fb4 Guenter Roeck 2015-08-26 835 chip->info[0]->type == hwmon_chip && d560168b5d0fb4 Guenter Roeck 2015-08-26 836 (chip->info[0]->config[0] & HWMON_C_REGISTER_TZ)) { 44e3ad882bb268 Akinobu Mita 2020-05-04 837 err = hwmon_thermal_register_sensors(hdev); 74e3512731bd5c Dmitry Osipenko 2018-10-24 838 if (err) { 74e3512731bd5c Dmitry Osipenko 2018-10-24 839 device_unregister(hdev); 792eac18431967 Guenter Roeck 2019-06-06 840 /* 44e3ad882bb268 Akinobu Mita 2020-05-04 841 * Don't worry about hwdev; hwmon_dev_release(), called 44e3ad882bb268 Akinobu Mita 2020-05-04 842 * from device_unregister(), will free it. 792eac18431967 Guenter Roeck 2019-06-06 843 */ 74e3512731bd5c Dmitry Osipenko 2018-10-24 844 goto ida_remove; 74e3512731bd5c Dmitry Osipenko 2018-10-24 845 } 47c332deb8e89f Linus Walleij 2017-12-05 846 } bab2243ce18978 Guenter Roeck 2013-07-06 847 d560168b5d0fb4 Guenter Roeck 2015-08-26 848 return hdev; bab2243ce18978 Guenter Roeck 2013-07-06 849 d560168b5d0fb4 Guenter Roeck 2015-08-26 850 free_hwmon: 3bf8bdcf3bada7 Guenter Roeck 2020-01-16 @851 hwmon_dev_release(hdev); bab2243ce18978 Guenter Roeck 2013-07-06 852 ida_remove: 4ca5f468cc2a0b Jonathan Cameron 2011-10-31 853 ida_simple_remove(&hwmon_ida, id); bab2243ce18978 Guenter Roeck 2013-07-06 @854 return ERR_PTR(err); bab2243ce18978 Guenter Roeck 2013-07-06 855 } --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
