From patchwork Wed Sep 25 01:20:21 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Navid Emamdoost X-Patchwork-Id: 1131161 Return-Path: Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BC591C432C1 for ; Wed, 25 Sep 2019 01:20:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8BCDC2146E for ; Wed, 25 Sep 2019 01:20:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="SWiOz5xt" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2411353AbfIYBUn (ORCPT ); Tue, 24 Sep 2019 21:20:43 -0400 Received: from mail-io1-f68.google.com ([209.85.166.68]:33885 "EHLO mail-io1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2392379AbfIYBUn (ORCPT ); Tue, 24 Sep 2019 21:20:43 -0400 Received: by mail-io1-f68.google.com with SMTP id q1so9351551ion.1; Tue, 24 Sep 2019 18:20:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=mQUUiLblrejWrKd0KlOdzOcENXF40rH5GYEM9TuaSS4=; b=SWiOz5xtaFHfAe7qhrZOfB3XaTTABaRoUA2WkntQTu6mZLAPtLqltcn1HSz4FOVdmc C4hiQS6HxKitVmGPHJR6BnOiAdmb8p/ke41JsAiVtxDyJj/EtgPgcn000LqwSw2XXpRs aJsehFF9sM31eMjJ3jPJMVhf1moysCBTI8rG+6ARu4tg//7sLz/cZpWsKuTFtLA41S2X Moj049CPHidyuiCC+TLFAA4dTAVT1wk5YorB1e+xMSVKHkW4g3k4FuVp38c12CmbT13R wsO2tqJ0iRFy2a/3SfO203+i0XYenfEQ/WWVu5ywTPrwX422oKO4PeywgDE5pL7ILA7N 5lXA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=mQUUiLblrejWrKd0KlOdzOcENXF40rH5GYEM9TuaSS4=; b=PVpA/fyBIdoLH3ctyZntsZiwJLKRkFCP/mefxIVWehzdNs+J01dhg9UvthHik8uSD0 WAfXOKljH2T6Dz6LC8B/araiwV5iwm9zy3h1VlfLlervg6lYtMtGN8XfNFJccvIcoFIf 0rOQal8NWpkvib3lEqdVdolhDogapBQWxjPQApj9tuYkO3JWOpr994A5Legt0Ha/Mdpg iLum0KUzciv2wLRhPIGTis08rgOJQbuV/lWNmEkCqbS6tSlvN/HH7apJEJU+Xm1vfhqB SB2zOsviArNFeNhb/VpZyY329Au5/aGwh06J3nI6xfxyUSWEDCs24g1LN/PL7ESZvquK +kzg== X-Gm-Message-State: APjAAAWn+51fVnTld2M5xyo/OXfdxePecAEGRlXft7qNHI0Gnp9EyVgR otCkul6uMkwDI6M6UjbBXIo20ZwJqcc= X-Google-Smtp-Source: APXvYqwYH0op/7MmCPiM8xAfMsxn7k8FX5LrV/HLNynk01ydo/cjks9o5mJOS8EhqcleAu7Y+qfNeQ== X-Received: by 2002:a02:5ec4:: with SMTP id h187mr2345350jab.101.1569374442036; Tue, 24 Sep 2019 18:20:42 -0700 (PDT) Received: from cs-dulles.cs.umn.edu (cs-dulles.cs.umn.edu. [128.101.35.54]) by smtp.googlemail.com with ESMTPSA id r12sm28225ilq.70.2019.09.24.18.20.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Sep 2019 18:20:41 -0700 (PDT) From: Navid Emamdoost Cc: emamd001@umn.edu, smccaman@umn.edu, kjlu@umn.edu, Navid Emamdoost , Ping-Ke Shih , Kalle Valo , "David S. Miller" , linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] rtlwifi: prevent memory leak in rtl_usb_probe Date: Tue, 24 Sep 2019 20:20:21 -0500 Message-Id: <20190925012022.13727-1-navid.emamdoost@gmail.com> X-Mailer: git-send-email 2.17.1 To: unlisted-recipients:; (no To-header on input) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In rtl_usb_probe if allocation for usb_data fails the allocated hw should be released. In addition the allocated rtlpriv->usb_data should be released on error handling path. Signed-off-by: Navid Emamdoost --- drivers/net/wireless/realtek/rtlwifi/usb.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/realtek/rtlwifi/usb.c b/drivers/net/wireless/realtek/rtlwifi/usb.c index 4b59f3b46b28..348b0072cdd6 100644 --- a/drivers/net/wireless/realtek/rtlwifi/usb.c +++ b/drivers/net/wireless/realtek/rtlwifi/usb.c @@ -1021,8 +1021,10 @@ int rtl_usb_probe(struct usb_interface *intf, rtlpriv->hw = hw; rtlpriv->usb_data = kcalloc(RTL_USB_MAX_RX_COUNT, sizeof(u32), GFP_KERNEL); - if (!rtlpriv->usb_data) + if (!rtlpriv->usb_data) { + ieee80211_free_hw(hw); return -ENOMEM; + } /* this spin lock must be initialized early */ spin_lock_init(&rtlpriv->locks.usb_lock); @@ -1083,6 +1085,7 @@ int rtl_usb_probe(struct usb_interface *intf, _rtl_usb_io_handler_release(hw); usb_put_dev(udev); complete(&rtlpriv->firmware_loading_complete); + kfree(rtlpriv->usb_data); return -ENODEV; } EXPORT_SYMBOL(rtl_usb_probe);