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hwmon: (acpi_power_meter) Fix potential memory leak in acpi_power_meter_add()
[ Upstream commit8b97f99222
] Although it rarely happens, we should call free_capabilities() if error happens after read_capabilities() to free allocated strings. Fixes:de584afa5e
("hwmon driver for ACPI 4.0 power meters") Signed-off-by: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com> Link: https://lore.kernel.org/r/20200625043242.31175-1-misono.tomohiro@jp.fujitsu.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Sasha Levin <sashal@kernel.org>
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1 changed files with 3 additions and 1 deletions
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@ -895,7 +895,7 @@ static int acpi_power_meter_add(struct acpi_device *device)
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res = setup_attrs(resource);
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if (res)
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goto exit_free;
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goto exit_free_capability;
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resource->hwmon_dev = hwmon_device_register(&device->dev);
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if (IS_ERR(resource->hwmon_dev)) {
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@ -908,6 +908,8 @@ static int acpi_power_meter_add(struct acpi_device *device)
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exit_remove:
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remove_attrs(resource);
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exit_free_capability:
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free_capabilities(resource);
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exit_free:
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kfree(resource);
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exit:
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