From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BA7777F for ; Tue, 7 Jun 2022 17:56:03 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E7B6FC34115; Tue, 7 Jun 2022 17:56:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1654624563; bh=IQLEsmrKiVuGX+dVFlCbbaUWubNS1XxR6sRXnYMgr/o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VHlyJnDLk84jld9H4PVjHVOwapr2M2hMszxM84W8zHqsyVEerQpFpf4eLf+w4KgHK 27Wy10vUbQkSgtNI3j28b3cEL95NsCht0216VupTUmp2/Qtj9zF0VGTuDl4BO1rqbq vZQtR828XBeiHatAu+nCVfe8FzAu+bhnhoKWk5m3u2+3VKP2zEbveFSbArwZZqpQjT fF/dkj4ZUqA60m9HxAsi5HpY34EOvDPqsLH9O8/Oqpko1hfmWqiuge0jFIGmvFCtAR X6qGfZf3Ai+jo2DmmwLbBZwgD/y6KEQ0DES832asZ+WrzS5Z+kTYhc8c7d/hUjp2RD jhBjz4nVgjm9Q== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Xiaoke Wang , Dan Carpenter , Greg Kroah-Hartman , Sasha Levin , Larry.Finger@lwfinger.net, florian.c.schilhabel@googlemail.com, kuba@kernel.org, paskripkin@gmail.com, len.baker@gmx.com, skumark1902@gmail.com, wanngchenng@gmail.com, linux-staging@lists.linux.dev Subject: [PATCH AUTOSEL 5.15 02/51] staging: rtl8712: fix a potential memory leak in r871xu_drv_init() Date: Tue, 7 Jun 2022 13:55:01 -0400 Message-Id: <20220607175552.479948-2-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220607175552.479948-1-sashal@kernel.org> References: <20220607175552.479948-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-staging@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit 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