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=-6.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 903D2C0044C for ; Sun, 11 Nov 2018 23:16:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4D98D20817 for ; Sun, 11 Nov 2018 23:16:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="alp8Wm34" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4D98D20817 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389944AbeKLJGw (ORCPT ); Mon, 12 Nov 2018 04:06:52 -0500 Received: from mail.kernel.org ([198.145.29.99]:49358 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389765AbeKLIVi (ORCPT ); Mon, 12 Nov 2018 03:21:38 -0500 Received: from localhost (unknown [206.108.79.134]) (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 4D9E421508; Sun, 11 Nov 2018 22:31:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1541975500; bh=1dPJcaejeqyW/yShYY1p3jzTyQewnFFV6XfGNb2KrlE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=alp8Wm348BBHn0Iaeaivu6fbgO4DZRHZ9PVOsnzo43kufGfynaSQQYdNEGg3HT8xh DZCH7XpTvSdkawRWj5wl2UdxLylyi7OOripcwvwa0Y5jmYkJ8gh5RZ1ZI/97iORK8S fvqyazUrOTYTtXV66PAQ9dahfiWbIT0DJqTPgi0E= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Colin Ian King , Bjorn Andersson Subject: [PATCH 4.18 308/350] rpmsg: smd: fix memory leak on channel create Date: Sun, 11 Nov 2018 14:22:52 -0800 Message-Id: <20181111221720.958420964@linuxfoundation.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181111221707.043394111@linuxfoundation.org> References: <20181111221707.043394111@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Colin Ian King commit 940c620d6af8fca7d115de40f19870fba415efac upstream. Currently a failed allocation of channel->name leads to an immediate return without freeing channel. Fix this by setting ret to -ENOMEM and jumping to an exit path that kfree's channel. Detected by CoverityScan, CID#1473692 ("Resource Leak") Fixes: 53e2822e56c7 ("rpmsg: Introduce Qualcomm SMD backend") Cc: stable@vger.kernel.org Signed-off-by: Colin Ian King Signed-off-by: Bjorn Andersson Signed-off-by: Greg Kroah-Hartman --- drivers/rpmsg/qcom_smd.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) --- a/drivers/rpmsg/qcom_smd.c +++ b/drivers/rpmsg/qcom_smd.c @@ -1114,8 +1114,10 @@ static struct qcom_smd_channel *qcom_smd channel->edge = edge; channel->name = kstrdup(name, GFP_KERNEL); - if (!channel->name) - return ERR_PTR(-ENOMEM); + if (!channel->name) { + ret = -ENOMEM; + goto free_channel; + } spin_lock_init(&channel->tx_lock); spin_lock_init(&channel->recv_lock); @@ -1165,6 +1167,7 @@ static struct qcom_smd_channel *qcom_smd free_name_and_channel: kfree(channel->name); +free_channel: kfree(channel); return ERR_PTR(ret);