From patchwork Sun Jan 3 00:26:26 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Finn Thain X-Patchwork-Id: 11995395 X-Patchwork-Delegate: kuba@kernel.org 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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 D981EC433DB for ; Sun, 3 Jan 2021 00:32:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 97960207AA for ; Sun, 3 Jan 2021 00:32:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726894AbhACAcN (ORCPT ); Sat, 2 Jan 2021 19:32:13 -0500 Received: from kvm5.telegraphics.com.au ([98.124.60.144]:48486 "EHLO kvm5.telegraphics.com.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726802AbhACAcM (ORCPT ); Sat, 2 Jan 2021 19:32:12 -0500 Received: by kvm5.telegraphics.com.au (Postfix, from userid 502) id 6401229A96; Sat, 2 Jan 2021 19:31:29 -0500 (EST) To: "David S. Miller" , Jakub Kicinski Cc: "Christophe JAILLET" , "Thomas Bogendoerfer" , "Chris Zankel" , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Message-Id: <529006a7dcd2cd345c2261d4beae0960880f4828.1609633586.git.fthain@telegraphics.com.au> From: Finn Thain Subject: [PATCH v4 net RESEND] net/sonic: Fix some resource leaks in error handling paths Date: Sun, 03 Jan 2021 11:26:26 +1100 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Christophe JAILLET A call to dma_alloc_coherent() is wrapped by sonic_alloc_descriptors(). This is correctly freed in the remove function, but not in the error handling path of the probe function. Fix this by adding the missing dma_free_coherent() call. While at it, rename a label in order to be slightly more informative. Cc: Christophe JAILLET Cc: Thomas Bogendoerfer Cc: Chris Zankel References: commit 10e3cc180e64 ("net/sonic: Fix a resource leak in an error handling path in 'jazz_sonic_probe()'") Fixes: 74f2a5f0ef64 ("xtensa: Add support for the Sonic Ethernet device for the XT2000 board.") Fixes: efcce839360f ("[PATCH] macsonic/jazzsonic network drivers update") Signed-off-by: Christophe JAILLET Signed-off-by: Finn Thain --- Changed since v3: - Update commit log. Changed since v2: - Dropped whitespace change. --- drivers/net/ethernet/natsemi/macsonic.c | 12 ++++++++++-- drivers/net/ethernet/natsemi/xtsonic.c | 7 +++++-- 2 files changed, 15 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/natsemi/macsonic.c b/drivers/net/ethernet/natsemi/macsonic.c index 776b7d264dc3..2289e1fe3741 100644 --- a/drivers/net/ethernet/natsemi/macsonic.c +++ b/drivers/net/ethernet/natsemi/macsonic.c @@ -506,10 +506,14 @@ static int mac_sonic_platform_probe(struct platform_device *pdev) err = register_netdev(dev); if (err) - goto out; + goto undo_probe; return 0; +undo_probe: + dma_free_coherent(lp->device, + SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode), + lp->descriptors, lp->descriptors_laddr); out: free_netdev(dev); @@ -584,12 +588,16 @@ static int mac_sonic_nubus_probe(struct nubus_board *board) err = register_netdev(ndev); if (err) - goto out; + goto undo_probe; nubus_set_drvdata(board, ndev); return 0; +undo_probe: + dma_free_coherent(lp->device, + SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode), + lp->descriptors, lp->descriptors_laddr); out: free_netdev(ndev); return err; diff --git a/drivers/net/ethernet/natsemi/xtsonic.c b/drivers/net/ethernet/natsemi/xtsonic.c index afa166ff7aef..28d9e98db81a 100644 --- a/drivers/net/ethernet/natsemi/xtsonic.c +++ b/drivers/net/ethernet/natsemi/xtsonic.c @@ -229,11 +229,14 @@ int xtsonic_probe(struct platform_device *pdev) sonic_msg_init(dev); if ((err = register_netdev(dev))) - goto out1; + goto undo_probe1; return 0; -out1: +undo_probe1: + dma_free_coherent(lp->device, + SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode), + lp->descriptors, lp->descriptors_laddr); release_region(dev->base_addr, SONIC_MEM_SIZE); out: free_netdev(dev);