From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751878AbcCJN4B (ORCPT ); Thu, 10 Mar 2016 08:56:01 -0500 Received: from mx2.parallels.com ([199.115.105.18]:51561 "EHLO mx2.parallels.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751510AbcCJNzw (ORCPT ); Thu, 10 Mar 2016 08:55:52 -0500 Subject: Re: [PATCH] mm/mempool: Avoid KASAN marking mempool posion checks as use-after-free To: Matthew Dawson , References: <1457504179-18942-1-git-send-email-matthew@mjdsystems.ca> CC: , Andrew Morton From: Andrey Ryabinin Message-ID: <56E17CE4.7090400@virtuozzo.com> Date: Thu, 10 Mar 2016 16:55:48 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.0 MIME-Version: 1.0 In-Reply-To: <1457504179-18942-1-git-send-email-matthew@mjdsystems.ca> Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: US-EXCH2.sw.swsoft.com (10.255.249.46) To US-EXCH2.sw.swsoft.com (10.255.249.46) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/09/2016 09:16 AM, Matthew Dawson wrote: > When removing an element from the mempool, mark it as unpoisoned in KASAN > before verifying its contents for SLUB/SLAB debugging. Otherwise KASAN > will flag the reads checking the element use-after-free writes as > use-after-free reads. > > Signed-off-by: Matthew Dawson Acked-by: Andrey Ryabinin