From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from saturn.retrosnub.co.uk ([178.18.118.26]:58693 "EHLO saturn.retrosnub.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752174AbbEQIKw (ORCPT ); Sun, 17 May 2015 04:10:52 -0400 Message-ID: <55584D0B.8010900@kernel.org> Date: Sun, 17 May 2015 09:10:51 +0100 From: Jonathan Cameron MIME-Version: 1.0 To: Srinivas Pandruvada , Fabio Estevam CC: linux-iio@vger.kernel.org, Fabio Estevam Subject: Re: [PATCH v3 2/6] iio: gyro: hid-sensor-gyro-3d: Fix memory leak in probe() References: <1431540374-3168-1-git-send-email-festevam@gmail.com> <1431540374-3168-2-git-send-email-festevam@gmail.com> <1431543143.11262.78.camel@spandruv-DESK3.jf.intel.com> In-Reply-To: <1431543143.11262.78.camel@spandruv-DESK3.jf.intel.com> Content-Type: text/plain; charset=utf-8 Sender: linux-iio-owner@vger.kernel.org List-Id: linux-iio@vger.kernel.org On 13/05/15 19:52, Srinivas Pandruvada wrote: > On Wed, 2015-05-13 at 15:06 -0300, Fabio Estevam wrote: >> From: Fabio Estevam >> >> '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 > Reviewed-by: Srinivas Pandruvada Applied. >> --- >> Build-tested only. >> >> Changes since v2: >> - None >> Changes since v1: >> - Make clear in the commit log that the proble only occurs in the error >> paths >> >> drivers/iio/gyro/hid-sensor-gyro-3d.c | 13 ++++++------- >> 1 file changed, 6 insertions(+), 7 deletions(-) >> >> diff --git a/drivers/iio/gyro/hid-sensor-gyro-3d.c b/drivers/iio/gyro/hid-sensor-gyro-3d.c >> index b5883b6..7b60b58 100644 >> --- a/drivers/iio/gyro/hid-sensor-gyro-3d.c >> +++ b/drivers/iio/gyro/hid-sensor-gyro-3d.c >> @@ -298,7 +298,6 @@ static int hid_gyro_3d_probe(struct platform_device *pdev) >> struct iio_dev *indio_dev; >> struct gyro_3d_state *gyro_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(*gyro_state)); >> if (!indio_dev) >> @@ -317,21 +316,21 @@ static int hid_gyro_3d_probe(struct platform_device *pdev) >> return ret; >> } >> >> - channels = kmemdup(gyro_3d_channels, sizeof(gyro_3d_channels), >> - GFP_KERNEL); >> - if (!channels) { >> + indio_dev->channels = kmemdup(gyro_3d_channels, >> + sizeof(gyro_3d_channels), GFP_KERNEL); >> + if (!indio_dev->channels) { >> dev_err(&pdev->dev, "failed to duplicate channels\n"); >> return -ENOMEM; >> } >> >> - ret = gyro_3d_parse_report(pdev, hsdev, channels, >> - HID_USAGE_SENSOR_GYRO_3D, gyro_state); >> + ret = gyro_3d_parse_report(pdev, hsdev, >> + (struct iio_chan_spec *)indio_dev->channels, >> + HID_USAGE_SENSOR_GYRO_3D, gyro_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(gyro_3d_channels); >> indio_dev->dev.parent = &pdev->dev; >> indio_dev->info = &gyro_3d_info; > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-iio" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >