From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2F153C2D0A8 for ; Wed, 30 Sep 2020 06:28:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E7E4120789 for ; Wed, 30 Sep 2020 06:28:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1601447332; bh=sVXZexhiPvOc3YsTNHMCvWVEmuSvfWouq03GErnEmGY=; h=Subject:To:From:Date:List-ID:From; b=HzBn2vccZdif6jk+SJmg1BQHtUWRiB/3bMD6zH9yemUVfZOauRLOV1lfGZEzVtMWg XJPoDjmJBpf63JXnPgLMxvBCQaEDZJ1enqkwga+Cj4SDqydmP0RNBmUziJNDe25fVT F8LLxVONQGkweiwdirckS9CV7VqhnErAZv18PirU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725872AbgI3G2w (ORCPT ); Wed, 30 Sep 2020 02:28:52 -0400 Received: from mail.kernel.org ([198.145.29.99]:53928 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725825AbgI3G2w (ORCPT ); Wed, 30 Sep 2020 02:28:52 -0400 Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A8F9B2071E; Wed, 30 Sep 2020 06:28:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1601447332; bh=sVXZexhiPvOc3YsTNHMCvWVEmuSvfWouq03GErnEmGY=; h=Subject:To:From:Date:From; b=xoyJy4cWfxKJunZw3ziS2JBRPkZq6Wa2hWj+U0QxZXDRRTBllgPAsHG5zl6IK/pCq 02wtt6SX6aeom+dPaX4kFTmM++ISpABRLizUJCJTxl1K/8hYTsAlKr7TIG/uqO5KD1 9qH4GkyRKi7Mji4Z9NeKP+EPCRaAQnfTp3uJubQc= Subject: patch "iio: adc: gyroadc: fix leak of device node iterator" added to staging-next To: kernel@cdqe.de, Jonathan.Cameron@huawei.com, Stable@vger.kernel.org From: Date: Wed, 30 Sep 2020 08:28:08 +0200 Message-ID: <160144728888203@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org This is a note to let you know that I've just added the patch titled iio: adc: gyroadc: fix leak of device node iterator to my staging git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git in the staging-next branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will also be merged in the next major kernel release during the merge window. If you have any questions about this process, please let me know. >From da4410d4078ba4ead9d6f1027d6db77c5a74ecee Mon Sep 17 00:00:00 2001 From: Tobias Jordan Date: Sat, 26 Sep 2020 18:19:46 +0200 Subject: iio: adc: gyroadc: fix leak of device node iterator Add missing of_node_put calls when exiting the for_each_child_of_node loop in rcar_gyroadc_parse_subdevs early. Also add goto-exception handling for the error paths in that loop. Fixes: 059c53b32329 ("iio: adc: Add Renesas GyroADC driver") Signed-off-by: Tobias Jordan Link: https://lore.kernel.org/r/20200926161946.GA10240@agrajag.zerfleddert.de Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/adc/rcar-gyroadc.c | 21 +++++++++++++++------ 1 file changed, 15 insertions(+), 6 deletions(-) diff --git a/drivers/iio/adc/rcar-gyroadc.c b/drivers/iio/adc/rcar-gyroadc.c index dcaefc108ff6..9f38cf3c7dc2 100644 --- a/drivers/iio/adc/rcar-gyroadc.c +++ b/drivers/iio/adc/rcar-gyroadc.c @@ -357,7 +357,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev) num_channels = ARRAY_SIZE(rcar_gyroadc_iio_channels_3); break; default: - return -EINVAL; + goto err_e_inval; } /* @@ -374,7 +374,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev) dev_err(dev, "Failed to get child reg property of ADC \"%pOFn\".\n", child); - return ret; + goto err_of_node_put; } /* Channel number is too high. */ @@ -382,7 +382,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev) dev_err(dev, "Only %i channels supported with %pOFn, but reg = <%i>.\n", num_channels, child, reg); - return -EINVAL; + goto err_e_inval; } } @@ -391,7 +391,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev) dev_err(dev, "Channel %i uses different ADC mode than the rest.\n", reg); - return -EINVAL; + goto err_e_inval; } /* Channel is valid, grab the regulator. */ @@ -401,7 +401,8 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev) if (IS_ERR(vref)) { dev_dbg(dev, "Channel %i 'vref' supply not connected.\n", reg); - return PTR_ERR(vref); + ret = PTR_ERR(vref); + goto err_of_node_put; } priv->vref[reg] = vref; @@ -425,8 +426,10 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev) * attached to the GyroADC at a time, so if we found it, * we can stop parsing here. */ - if (childmode == RCAR_GYROADC_MODE_SELECT_1_MB88101A) + if (childmode == RCAR_GYROADC_MODE_SELECT_1_MB88101A) { + of_node_put(child); break; + } } if (first) { @@ -435,6 +438,12 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev) } return 0; + +err_e_inval: + ret = -EINVAL; +err_of_node_put: + of_node_put(child); + return ret; } static void rcar_gyroadc_deinit_supplies(struct iio_dev *indio_dev) -- 2.28.0