On 13/05/15 19:51, Srinivas Pandruvada wrote:
> On Wed, 2015-05-13 at 15:06 -0300, Fabio Estevam wrote:
>> From: Fabio Estevam <fabio.estevam@xxxxxxxxxxxxx>
>>
>> 'channels' is allocated via kmemdup and it is never freed in the
>> subsequent error paths.
>>
>> Use 'indio_dev->channels' directly instead, so that we avoid such
>> memory leak problem.
>>
>> Signed-off-by: Fabio Estevam <fabio.estevam@xxxxxxxxxxxxx>
> Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>
Applied to the togreg branch of iio.git
Thanks,
>> ---
>> Build-tested only.
>>
>> Changes since v2:
>> - Properly align "accel_3d_parse_report(" in multiple lines
>> Changes since v1:
>> - Make clear in the commit log that the proble only occurs in the error
>> paths
>>
>> drivers/iio/accel/hid-sensor-accel-3d.c | 13 ++++++-------
>> 1 file changed, 6 insertions(+), 7 deletions(-)
>>
>> diff --git a/drivers/iio/accel/hid-sensor-accel-3d.c b/drivers/iio/accel/hid-sensor-accel-3d.c
>> index 2b4fad6..b933957 100644
>> --- a/drivers/iio/accel/hid-sensor-accel-3d.c
>> +++ b/drivers/iio/accel/hid-sensor-accel-3d.c
>> @@ -299,7 +299,6 @@ static int hid_accel_3d_probe(struct platform_device *pdev)
>> struct iio_dev *indio_dev;
>> struct accel_3d_state *accel_state;
>> struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
>> - struct iio_chan_spec *channels;
>>
>> indio_dev = devm_iio_device_alloc(&pdev->dev,
>> sizeof(struct accel_3d_state));
>> @@ -320,21 +319,21 @@ static int hid_accel_3d_probe(struct platform_device *pdev)
>> return ret;
>> }
>>
>> - channels = kmemdup(accel_3d_channels, sizeof(accel_3d_channels),
>> - GFP_KERNEL);
>> - if (!channels) {
>> + indio_dev->channels = kmemdup(accel_3d_channels,
>> + sizeof(accel_3d_channels), GFP_KERNEL);
>> + if (!indio_dev->channels) {
>> dev_err(&pdev->dev, "failed to duplicate channels\n");
>> return -ENOMEM;
>> }
>>
>> - ret = accel_3d_parse_report(pdev, hsdev, channels,
>> - HID_USAGE_SENSOR_ACCEL_3D, accel_state);
>> + ret = accel_3d_parse_report(pdev, hsdev,
>> + (struct iio_chan_spec *)indio_dev->channels,
>> + HID_USAGE_SENSOR_ACCEL_3D, accel_state);
>> if (ret) {
>> dev_err(&pdev->dev, "failed to setup attributes\n");
>> goto error_free_dev_mem;
>> }
>>
>> - indio_dev->channels = channels;
>> indio_dev->num_channels = ARRAY_SIZE(accel_3d_channels);
>> indio_dev->dev.parent = &pdev->dev;
>> indio_dev->info = &accel_3d_info;
>
>
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