From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Kamal Heib , Sasha Levin Subject: [PATCH 4.18 074/228] staging: mt7621-eth: Fix memory leak in mtk_add_mac() error path Date: Tue, 2 Oct 2018 06:22:51 -0700 Message-Id: <20181002132504.326727824@linuxfoundation.org> In-Reply-To: <20181002132459.032960735@linuxfoundation.org> References: <20181002132459.032960735@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: 4.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Kamal Heib [ Upstream commit 85e1d42663a0c163002961d2685be952067b0dc2 ] Fix memory leak in error path of mtk_add_mac() by make sure to free the allocated netdev. Fixes: e3cbf478f846 ('staging: mt7621-eth: add the drivers core files') Signed-off-by: Kamal Heib Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/staging/mt7621-eth/mtk_eth_soc.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) --- a/drivers/staging/mt7621-eth/mtk_eth_soc.c +++ b/drivers/staging/mt7621-eth/mtk_eth_soc.c @@ -2012,8 +2012,10 @@ static int mtk_add_mac(struct mtk_eth *e mac->hw_stats = devm_kzalloc(eth->dev, sizeof(*mac->hw_stats), GFP_KERNEL); - if (!mac->hw_stats) - return -ENOMEM; + if (!mac->hw_stats) { + err = -ENOMEM; + goto free_netdev; + } spin_lock_init(&mac->hw_stats->stats_lock); mac->hw_stats->reg_offset = id * MTK_STAT_OFFSET; } @@ -2037,7 +2039,8 @@ static int mtk_add_mac(struct mtk_eth *e err = register_netdev(eth->netdev[id]); if (err) { dev_err(eth->dev, "error bringing up device\n"); - return err; + err = -ENOMEM; + goto free_netdev; } eth->netdev[id]->irq = eth->irq; netif_info(eth, probe, eth->netdev[id], @@ -2045,6 +2048,10 @@ static int mtk_add_mac(struct mtk_eth *e eth->netdev[id]->base_addr, eth->netdev[id]->irq); return 0; + +free_netdev: + free_netdev(eth->netdev[id]); + return err; } static int mtk_probe(struct platform_device *pdev)