From patchwork Thu Oct 31 01:47:43 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zicheng Qu X-Patchwork-Id: 13857413 Received: from szxga04-in.huawei.com (szxga04-in.huawei.com [45.249.212.190]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 80F2A53A7; Thu, 31 Oct 2024 01:58:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.190 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730339923; cv=none; b=PdbAenxTNMeMQVq/fwOjNdllaCDj01pVQTGU1CLi3nud2zjpqeLJyHqFiBDAUrzaYC2onm//za5mgvHiD9cMKaoSB2/5PpQbmeLillSziVV5wm36OFMZvPtRK76igTmYgqSTo8btzgOL4SYgMxMCoa26YYTdcgmiDPYDIz81lrw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1730339923; c=relaxed/simple; bh=BMO5Um2k402N5llMU45si6zlYft08g0myJPm9Zl04xk=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=s4NMqjdriaDRiiS6on58n6XhIgwPecFtDnLAxJKavJeCqV8RMRMCLx1pB58VrXXxDitYJbwzEyXVuQeS47TTvIqrwra9EHwdMQY6/dSYMOKZM2h+MExhI2E+H5gSw/TUC3Xqc0CX5ZTd5LCCMeUHQ5kmOoxCTSrPryjicNAT3lU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.190 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.163.44]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4Xf6Yq5M9bz2FblB; Thu, 31 Oct 2024 09:57:03 +0800 (CST) Received: from kwepemd200012.china.huawei.com (unknown [7.221.188.145]) by mail.maildlp.com (Postfix) with ESMTPS id A93F31400DC; Thu, 31 Oct 2024 09:58:36 +0800 (CST) Received: from huawei.com (10.67.175.84) by kwepemd200012.china.huawei.com (7.221.188.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1258.34; Thu, 31 Oct 2024 09:58:36 +0800 From: Zicheng Qu To: , , , , CC: , , , Subject: [PATCH] iio: fix memory leak for iio_gts_build_avail_scale_table() Date: Thu, 31 Oct 2024 01:47:43 +0000 Message-ID: <20241031014743.2313121-1-quzicheng@huawei.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To kwepemd200012.china.huawei.com (7.221.188.145) In iio_gts_build_avail_scale_table(), the memory allocated for per_time_gains is freed using kfree(per_time_gains) before return 0. However, the type per_time_gains is 'int **', and the memory allocated for its inner elements is not being freed, leading to a memory leak. Cc: stable@vger.kernel.org # v6.6+ Fixes: 38416c28e168 ("iio: light: Add gain-time-scale helpers") Signed-off-by: Zicheng Qu --- drivers/iio/industrialio-gts-helper.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/iio/industrialio-gts-helper.c b/drivers/iio/industrialio-gts-helper.c index 59d7615c0f56..f2450b2e740d 100644 --- a/drivers/iio/industrialio-gts-helper.c +++ b/drivers/iio/industrialio-gts-helper.c @@ -307,6 +307,8 @@ static int iio_gts_build_avail_scale_table(struct iio_gts *gts) if (ret) goto err_free_out; + for (j = 0; j < gts->num_itime; j++) + kfree(per_time_gains[i]); kfree(per_time_gains); gts->per_time_avail_scale_tables = per_time_scales;