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=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 5AA07C10F05 for ; Thu, 4 Apr 2019 09:35:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 298D3205F4 for ; Thu, 4 Apr 2019 09:35:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1554370506; bh=uNcEBcBJFPNua8sY2kxw/P2w7tlod3gFYnt+hnTxyrU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=QuFQb+fiyDVPm2u5qBEc7V8ShKxKhrpvAtQg4SKRDkQS5GpgjKqYV1THbEXNI3FYV jqDtNnNOyVGfvKjKEjgamYIxMIXlrlxVwUWNExPgSHr86252HBxcEDjhDlJ7mbnySI vHMcgtnbBzg1gOVD56UAf8TYw4VHmJ85I/Jr0rEw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731913AbfDDJGo (ORCPT ); Thu, 4 Apr 2019 05:06:44 -0400 Received: from mail.kernel.org ([198.145.29.99]:45304 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731576AbfDDJGn (ORCPT ); Thu, 4 Apr 2019 05:06:43 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id ACBB9214AF; Thu, 4 Apr 2019 09:06:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1554368803; bh=uNcEBcBJFPNua8sY2kxw/P2w7tlod3gFYnt+hnTxyrU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QMs3G4uyezNbWKZh6a0mIBTaBmJGf/w0uofNyDa6x6MMUo9Sh8g4mPzGmlJCfcQ8Q to+a7M6kaobsGPHfCZ2P4L1FPn0pJ/5rLxEDNSZu0SayryHY6H1tnF4zVOtdASAR1y y6jXElkOXbazCdJ4bac620aPb1tGAJW2kxFG/zag= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Zumeng Chen , Kalle Valo , Sasha Levin Subject: [PATCH 4.19 176/187] wlcore: Fix memory leak in case wl12xx_fetch_firmware failure Date: Thu, 4 Apr 2019 10:48:33 +0200 Message-Id: <20190404084611.402025405@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190404084603.119654039@linuxfoundation.org> References: <20190404084603.119654039@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit ba2ffc96321c8433606ceeb85c9e722b8113e5a7 ] Release fw_status, raw_fw_status, and tx_res_if when wl12xx_fetch_firmware failed instead of meaningless goto out to avoid the following memory leak reports(Only the last one listed): unreferenced object 0xc28a9a00 (size 512): comm "kworker/0:4", pid 31298, jiffies 2783204 (age 203.290s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<6624adab>] kmemleak_alloc+0x40/0x74 [<500ddb31>] kmem_cache_alloc_trace+0x1ac/0x270 [] wl12xx_chip_wakeup+0xc4/0x1fc [wlcore] [<76c5db53>] wl1271_op_add_interface+0x4a4/0x8f4 [wlcore] [] drv_add_interface+0xa4/0x1a0 [mac80211] [<65bac325>] ieee80211_reconfig+0x9c0/0x1644 [mac80211] [<2817c80e>] ieee80211_restart_work+0x90/0xc8 [mac80211] [<7e1d425a>] process_one_work+0x284/0x42c [<55f9432e>] worker_thread+0x2fc/0x48c [] kthread+0x148/0x160 [<63144b13>] ret_from_fork+0x14/0x2c [< (null)>] (null) [<1f6e7715>] 0xffffffff Signed-off-by: Zumeng Chen Signed-off-by: Kalle Valo Signed-off-by: Sasha Levin --- drivers/net/wireless/ti/wlcore/main.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c index 19e3c5a0b715..2ca5658bbc2a 100644 --- a/drivers/net/wireless/ti/wlcore/main.c +++ b/drivers/net/wireless/ti/wlcore/main.c @@ -1084,8 +1084,11 @@ static int wl12xx_chip_wakeup(struct wl1271 *wl, bool plt) goto out; ret = wl12xx_fetch_firmware(wl, plt); - if (ret < 0) - goto out; + if (ret < 0) { + kfree(wl->fw_status); + kfree(wl->raw_fw_status); + kfree(wl->tx_res_if); + } out: return ret; -- 2.19.1