From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754175AbdKADLt (ORCPT ); Tue, 31 Oct 2017 23:11:49 -0400 Received: from shards.monkeyblade.net ([184.105.139.130]:44676 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751958AbdKADLr (ORCPT ); Tue, 31 Oct 2017 23:11:47 -0400 Date: Wed, 01 Nov 2017 12:11:44 +0900 (KST) Message-Id: <20171101.121144.2041853344891602326.davem@davemloft.net> To: bianpan2016@163.com Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: net: lapbether: fix double free From: David Miller In-Reply-To: <1509285442-24312-1-git-send-email-bianpan2016@163.com> References: <1509285442-24312-1-git-send-email-bianpan2016@163.com> X-Mailer: Mew version 6.7 on Emacs 25.3 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Tue, 31 Oct 2017 20:11:47 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Pan Bian Date: Sun, 29 Oct 2017 21:57:22 +0800 > The function netdev_priv() returns the private data of the device. The > memory to store the private data is allocated in alloc_netdev() and is > released in netdev_free(). Calling kfree() on the return value of > netdev_priv() after netdev_free() results in a double free bug. > > Signed-off-by: Pan Bian Applied.