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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B36F1C4332F for ; Mon, 14 Nov 2022 12:55:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237507AbiKNMzR (ORCPT ); Mon, 14 Nov 2022 07:55:17 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47562 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237508AbiKNMzR (ORCPT ); Mon, 14 Nov 2022 07:55:17 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5F3BF275F8 for ; Mon, 14 Nov 2022 04:55:16 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id C585A6117B for ; Mon, 14 Nov 2022 12:55:15 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C0052C433D6; Mon, 14 Nov 2022 12:55:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1668430515; bh=So4KTSjvUEcYg2qnLK1G4EkNRdS8THM5K746TjcZe/g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vNaco7GI62+q21TKfWHcmiQqisHibr1A2YaMynV8MeoA6rhvRAE2niy4IPxEpmFSK 3Ls5UNTTC6rKx+K8Scym3TJ3rJLWtu1K6mW1ymKKOEj2eQZ0fVRx2DYqDJcy2A31JV G0vgIEtb1prv70CqtFqz4CxjTP3Hmz1vmFbWM2MU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yang Yingliang , Peter Ujfalusi , Vinod Koul , Sasha Levin Subject: [PATCH 5.15 050/131] dmaengine: ti: k3-udma-glue: fix memory leak when register device fail Date: Mon, 14 Nov 2022 13:45:19 +0100 Message-Id: <20221114124450.850239307@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221114124448.729235104@linuxfoundation.org> References: <20221114124448.729235104@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Yang Yingliang [ Upstream commit ac2b9f34f02052709aea7b34bb2a165e1853eb41 ] If device_register() fails, it should call put_device() to give up reference, the name allocated in dev_set_name() can be freed in callback function kobject_cleanup(). Fixes: 5b65781d06ea ("dmaengine: ti: k3-udma-glue: Add support for K3 PKTDMA") Signed-off-by: Yang Yingliang Acked-by: Peter Ujfalusi Link: https://lore.kernel.org/r/20221020062827.2914148-1-yangyingliang@huawei.com Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin --- drivers/dma/ti/k3-udma-glue.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/dma/ti/k3-udma-glue.c b/drivers/dma/ti/k3-udma-glue.c index 4fdd9f06b723..4f1aeb81e9c7 100644 --- a/drivers/dma/ti/k3-udma-glue.c +++ b/drivers/dma/ti/k3-udma-glue.c @@ -299,6 +299,7 @@ struct k3_udma_glue_tx_channel *k3_udma_glue_request_tx_chn(struct device *dev, ret = device_register(&tx_chn->common.chan_dev); if (ret) { dev_err(dev, "Channel Device registration failed %d\n", ret); + put_device(&tx_chn->common.chan_dev); tx_chn->common.chan_dev.parent = NULL; goto err; } @@ -917,6 +918,7 @@ k3_udma_glue_request_rx_chn_priv(struct device *dev, const char *name, ret = device_register(&rx_chn->common.chan_dev); if (ret) { dev_err(dev, "Channel Device registration failed %d\n", ret); + put_device(&rx_chn->common.chan_dev); rx_chn->common.chan_dev.parent = NULL; goto err; } @@ -1048,6 +1050,7 @@ k3_udma_glue_request_remote_rx_chn(struct device *dev, const char *name, ret = device_register(&rx_chn->common.chan_dev); if (ret) { dev_err(dev, "Channel Device registration failed %d\n", ret); + put_device(&rx_chn->common.chan_dev); rx_chn->common.chan_dev.parent = NULL; goto err; } -- 2.35.1