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 099B1CCA48F for ; Mon, 13 Jun 2022 13:14:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1359565AbiFMNNt (ORCPT ); Mon, 13 Jun 2022 09:13:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41654 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1359475AbiFMNJ5 (ORCPT ); Mon, 13 Jun 2022 09:09:57 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CCC3639B98; Mon, 13 Jun 2022 04:20:50 -0700 (PDT) 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 ams.source.kernel.org (Postfix) with ESMTPS id 7877CB80D31; Mon, 13 Jun 2022 11:20:49 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CDD02C34114; Mon, 13 Jun 2022 11:20:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1655119248; bh=IQLEsmrKiVuGX+dVFlCbbaUWubNS1XxR6sRXnYMgr/o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=oDlQjPZya0tbb2vGzG2BD1avGXDy2QKelW9SvElUuC8V12ix+LsOw/CLAHEZ2Jfjq WDKsk3l+a0XNUYFEjqstyY6Jz3vY80/PaXNhcblE9P9R6ZpG8Yt7obtN2+BmIgO2vv TquWVOy9IIRACgg7qgbYngBnERtsVWrkjvHM350g= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dan Carpenter , Xiaoke Wang , Sasha Levin Subject: [PATCH 5.15 166/247] staging: rtl8712: fix a potential memory leak in r871xu_drv_init() Date: Mon, 13 Jun 2022 12:11:08 +0200 Message-Id: <20220613094927.993699724@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220613094922.843438024@linuxfoundation.org> References: <20220613094922.843438024@linuxfoundation.org> User-Agent: quilt/0.66 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: Xiaoke Wang [ Upstream commit 7288ff561de650d4139fab80e9cb0da9b5b32434 ] In r871xu_drv_init(), if r8712_init_drv_sw() fails, then the memory allocated by r8712_alloc_io_queue() in r8712_usb_dvobj_init() is not properly released as there is no action will be performed by r8712_usb_dvobj_deinit(). To properly release it, we should call r8712_free_io_queue() in r8712_usb_dvobj_deinit(). Besides, in r871xu_dev_remove(), r8712_usb_dvobj_deinit() will be called by r871x_dev_unload() under condition `padapter->bup` and r8712_free_io_queue() is called by r8712_free_drv_sw(). However, r8712_usb_dvobj_deinit() does not rely on `padapter->bup` and calling r8712_free_io_queue() in r8712_free_drv_sw() is negative for better understading the code. So I move r8712_usb_dvobj_deinit() into r871xu_dev_remove(), and remove r8712_free_io_queue() from r8712_free_drv_sw(). Reviewed-by: Dan Carpenter Signed-off-by: Xiaoke Wang Link: https://lore.kernel.org/r/tencent_B8048C592777830380A23A7C4409F9DF1305@qq.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/staging/rtl8712/os_intfs.c | 1 - drivers/staging/rtl8712/usb_intf.c | 6 +++--- 2 files changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/staging/rtl8712/os_intfs.c b/drivers/staging/rtl8712/os_intfs.c index 9502f6aa5306..bc033849fcea 100644 --- a/drivers/staging/rtl8712/os_intfs.c +++ b/drivers/staging/rtl8712/os_intfs.c @@ -332,7 +332,6 @@ void r8712_free_drv_sw(struct _adapter *padapter) r8712_free_evt_priv(&padapter->evtpriv); r8712_DeInitSwLeds(padapter); r8712_free_mlme_priv(&padapter->mlmepriv); - r8712_free_io_queue(padapter); _free_xmit_priv(&padapter->xmitpriv); _r8712_free_sta_priv(&padapter->stapriv); _r8712_free_recv_priv(&padapter->recvpriv); diff --git a/drivers/staging/rtl8712/usb_intf.c b/drivers/staging/rtl8712/usb_intf.c index cae04272deff..a61dd96ab2a4 100644 --- a/drivers/staging/rtl8712/usb_intf.c +++ b/drivers/staging/rtl8712/usb_intf.c @@ -265,6 +265,7 @@ static uint r8712_usb_dvobj_init(struct _adapter *padapter) static void r8712_usb_dvobj_deinit(struct _adapter *padapter) { + r8712_free_io_queue(padapter); } void rtl871x_intf_stop(struct _adapter *padapter) @@ -302,9 +303,6 @@ void r871x_dev_unload(struct _adapter *padapter) rtl8712_hal_deinit(padapter); } - /*s6.*/ - if (padapter->dvobj_deinit) - padapter->dvobj_deinit(padapter); padapter->bup = false; } } @@ -607,6 +605,8 @@ static void r871xu_dev_remove(struct usb_interface *pusb_intf) /* Stop driver mlme relation timer */ r8712_stop_drv_timers(padapter); r871x_dev_unload(padapter); + if (padapter->dvobj_deinit) + padapter->dvobj_deinit(padapter); r8712_free_drv_sw(padapter); free_netdev(pnetdev); -- 2.35.1