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| author | Misono Tomohiro <misono.tomohiro@jp.fujitsu.com> | 2020-06-25 07:32:42 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-07-09 10:37:11 +0300 |
| commit | e210d910f0b77a594d350c92aa815f60283a64a5 (patch) | |
| tree | 20cdd9d13ea23ddf5521c06ced9632b713fd3182 /drivers/hwmon | |
| parent | cbec0023eb85a55f24554b7f2df53ca37deff1b9 (diff) | |
| download | linux-e210d910f0b77a594d350c92aa815f60283a64a5.tar.xz | |
hwmon: (acpi_power_meter) Fix potential memory leak in acpi_power_meter_add()
[ Upstream commit 8b97f9922211c44a739c5cbd9502ecbb9f17f6d1 ]
Although it rarely happens, we should call free_capabilities()
if error happens after read_capabilities() to free allocated strings.
Fixes: de584afa5e188 ("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>
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/acpi_power_meter.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/hwmon/acpi_power_meter.c b/drivers/hwmon/acpi_power_meter.c index 2f2fb1966958..2f40da04a944 100644 --- a/drivers/hwmon/acpi_power_meter.c +++ b/drivers/hwmon/acpi_power_meter.c @@ -896,7 +896,7 @@ static int acpi_power_meter_add(struct acpi_device *device) res = setup_attrs(resource); if (res) - goto exit_free; + goto exit_free_capability; resource->hwmon_dev = hwmon_device_register(&device->dev); if (IS_ERR(resource->hwmon_dev)) { @@ -909,6 +909,8 @@ static int acpi_power_meter_add(struct acpi_device *device) exit_remove: remove_attrs(resource); +exit_free_capability: + free_capabilities(resource); exit_free: kfree(resource); exit: |