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=-5.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 88FE8C43143 for ; Tue, 2 Oct 2018 13:38:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 57F3D206B2 for ; Tue, 2 Oct 2018 13:38:31 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 57F3D206B2 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733256AbeJBUVx (ORCPT ); Tue, 2 Oct 2018 16:21:53 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:36558 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732311AbeJBUU3 (ORCPT ); Tue, 2 Oct 2018 16:20:29 -0400 Received: from localhost (24-104-73-23-ip-static.hfc.comcastbusiness.net [24.104.73.23]) by mail.linuxfoundation.org (Postfix) with ESMTPSA id 34D40B2F; Tue, 2 Oct 2018 13:37:05 +0000 (UTC) From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Bo Chen , Alexander Duyck , Aaron Brown , Jeff Kirsher , Sasha Levin Subject: [PATCH 4.9 87/94] e1000: ensure to free old tx/rx rings in set_ringparam() Date: Tue, 2 Oct 2018 06:25:41 -0700 Message-Id: <20181002132506.580398210@linuxfoundation.org> X-Mailer: git-send-email 2.19.0 In-Reply-To: <20181002132500.494838053@linuxfoundation.org> References: <20181002132500.494838053@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Bo Chen [ Upstream commit ee400a3f1bfe7004a3e14b81c38ccc5583c26295 ] In 'e1000_set_ringparam()', the tx_ring and rx_ring are updated with new value and the old tx/rx rings are freed only when the device is up. There are resource leaks on old tx/rx rings when the device is not up. This bug is reported by COD, a tool for testing kernel module binaries I am building. This patch fixes the bug by always calling 'kfree()' on old tx/rx rings in 'e1000_set_ringparam()'. Signed-off-by: Bo Chen Reviewed-by: Alexander Duyck Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/intel/e1000/e1000_ethtool.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/net/ethernet/intel/e1000/e1000_ethtool.c +++ b/drivers/net/ethernet/intel/e1000/e1000_ethtool.c @@ -645,14 +645,14 @@ static int e1000_set_ringparam(struct ne adapter->tx_ring = tx_old; e1000_free_all_rx_resources(adapter); e1000_free_all_tx_resources(adapter); - kfree(tx_old); - kfree(rx_old); adapter->rx_ring = rxdr; adapter->tx_ring = txdr; err = e1000_up(adapter); if (err) goto err_setup; } + kfree(tx_old); + kfree(rx_old); clear_bit(__E1000_RESETTING, &adapter->flags); return 0;