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=-13.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 9D83BC433E3 for ; Thu, 16 Jul 2020 03:52:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7AC922071B for ; Thu, 16 Jul 2020 03:52:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728232AbgGPDwG (ORCPT ); Wed, 15 Jul 2020 23:52:06 -0400 Received: from szxga06-in.huawei.com ([45.249.212.32]:55772 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726776AbgGPDwF (ORCPT ); Wed, 15 Jul 2020 23:52:05 -0400 Received: from DGGEMS401-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id 3485F2FA021D15DE2CCB; Thu, 16 Jul 2020 11:52:03 +0800 (CST) Received: from huawei.com (10.175.113.133) by DGGEMS401-HUB.china.huawei.com (10.3.19.201) with Microsoft SMTP Server id 14.3.487.0; Thu, 16 Jul 2020 11:51:59 +0800 From: Wang Hai To: , , , , , , , CC: , , Subject: [PATCH] net: smc91x: Fix possible memory leak in smc_drv_probe() Date: Thu, 16 Jul 2020 11:50:38 +0800 Message-ID: <20200716035038.19207-1-wanghai38@huawei.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.175.113.133] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If try_toggle_control_gpio() failed in smc_drv_probe(), free_netdev(ndev) should be called to free the ndev created earlier. Otherwise, a memleak will occur. Fixes: 7d2911c43815 ("net: smc91x: Fix gpios for device tree based booting") Reported-by: Hulk Robot Signed-off-by: Wang Hai --- drivers/net/ethernet/smsc/smc91x.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/smsc/smc91x.c b/drivers/net/ethernet/smsc/smc91x.c index 90410f9d3b1a..1c4fea9c3ec4 100644 --- a/drivers/net/ethernet/smsc/smc91x.c +++ b/drivers/net/ethernet/smsc/smc91x.c @@ -2274,7 +2274,7 @@ static int smc_drv_probe(struct platform_device *pdev) ret = try_toggle_control_gpio(&pdev->dev, &lp->power_gpio, "power", 0, 0, 100); if (ret) - return ret; + goto out_free_netdev; /* * Optional reset GPIO configured? Minimum 100 ns reset needed @@ -2283,7 +2283,7 @@ static int smc_drv_probe(struct platform_device *pdev) ret = try_toggle_control_gpio(&pdev->dev, &lp->reset_gpio, "reset", 0, 0, 100); if (ret) - return ret; + goto out_free_netdev; /* * Need to wait for optional EEPROM to load, max 750 us according -- 2.17.1