From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pd0-f177.google.com (mail-pd0-f177.google.com [209.85.192.177]) by kanga.kvack.org (Postfix) with ESMTP id 488976B0032 for ; Fri, 23 Jan 2015 05:14:33 -0500 (EST) Received: by mail-pd0-f177.google.com with SMTP id y13so7717061pdi.8 for ; Fri, 23 Jan 2015 02:14:33 -0800 (PST) Received: from mailout1.w1.samsung.com (mailout1.w1.samsung.com. [210.118.77.11]) by mx.google.com with ESMTPS id pl10si1448438pbb.48.2015.01.23.02.14.31 for (version=TLSv1 cipher=RC4-MD5 bits=128/128); Fri, 23 Jan 2015 02:14:32 -0800 (PST) Received: from eucpsbgm2.samsung.com (unknown [203.254.199.245]) by mailout1.w1.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0NIM00IHKKMZ6A60@mailout1.w1.samsung.com> for linux-mm@kvack.org; Fri, 23 Jan 2015 10:18:35 +0000 (GMT) Message-id: <54C21EFD.6080900@samsung.com> Date: Fri, 23 Jan 2015 13:14:21 +0300 From: Andrey Ryabinin MIME-version: 1.0 Subject: Re: [PATCH v9 00/17] Kernel address sanitizer - runtime memory debugger. References: <1404905415-9046-1-git-send-email-a.ryabinin@samsung.com> <1421859105-25253-1-git-send-email-a.ryabinin@samsung.com> <54C042D2.4040809@oracle.com> <54C16F99.2000006@oracle.com> In-reply-to: <54C16F99.2000006@oracle.com> Content-type: text/plain; charset=windows-1252 Content-transfer-encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Sasha Levin , Andrey Ryabinin Cc: LKML , Dmitry Vyukov , Konstantin Serebryany , Dmitry Chernenkov , Andrey Konovalov , Yuri Gribov , Konstantin Khlebnikov , Michal Marek , Thomas Gleixner , Ingo Molnar , Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , Dave Hansen , Andi Kleen , Vegard Nossum , "H. Peter Anvin" , "x86@kernel.org" , "linux-mm@kvack.org" , Randy Dunlap , Peter Zijlstra , Alexander Viro , Dave Jones , Jonathan Corbet , Linus Torvalds , Catalin Marinas On 01/23/2015 12:46 AM, Sasha Levin wrote: > Just to keep it going, here's a funny trace where kasan is catching issues > in ubsan: :) > Thanks, it turns out to be a GCC bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64741 As a workaround you could put kasan_disable_local()/kasan_enable_local() into ubsan_prologue()/ubsan_epilogue(). -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753748AbbAWKOd (ORCPT ); Fri, 23 Jan 2015 05:14:33 -0500 Received: from mailout1.w1.samsung.com ([210.118.77.11]:47190 "EHLO mailout1.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752263AbbAWKOa (ORCPT ); Fri, 23 Jan 2015 05:14:30 -0500 X-AuditID: cbfec7f5-b7fc86d0000066b7-20-54c21e72e45f Message-id: <54C21EFD.6080900@samsung.com> Date: Fri, 23 Jan 2015 13:14:21 +0300 From: Andrey Ryabinin User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0 MIME-version: 1.0 To: Sasha Levin , Andrey Ryabinin Cc: LKML , Dmitry Vyukov , Konstantin Serebryany , Dmitry Chernenkov , Andrey Konovalov , Yuri Gribov , Konstantin Khlebnikov , Michal Marek , Thomas Gleixner , Ingo Molnar , Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , Dave Hansen , Andi Kleen , Vegard Nossum , "H. Peter Anvin" , "x86@kernel.org" , "linux-mm@kvack.org" , Randy Dunlap , Peter Zijlstra , Alexander Viro , Dave Jones , Jonathan Corbet , Linus Torvalds , Catalin Marinas Subject: Re: [PATCH v9 00/17] Kernel address sanitizer - runtime memory debugger. References: <1404905415-9046-1-git-send-email-a.ryabinin@samsung.com> <1421859105-25253-1-git-send-email-a.ryabinin@samsung.com> <54C042D2.4040809@oracle.com> <54C16F99.2000006@oracle.com> In-reply-to: <54C16F99.2000006@oracle.com> Content-type: text/plain; charset=windows-1252 Content-transfer-encoding: 7bit X-Brightmail-Tracker: H4sIAAAAAAAAA02SW0hTcRzH+Z+7q8HxsjoJWQgSCM20oj8hYj0dkEJQwoLKqWMaTm3HSeZD 3lCcJaLo2pBceEHXSt1WppTOKU102VyakJecOU1ympomiNYuD/n2+X35Xl5+FBrgxIKpjKxc sSxLlBlK8LDRA8vEWVmIOfFc5dwZuPdehcOGDh0Bh778IeF662MAp3ZWAVw0lQO4uTIPoHGq GIHLDgcJqx1lJKzvOg7bK0sI2L3kQmB7xTwOP/c2EHBO9xeHdpMGgaV9NgSWbR3g0PLEhEDX jBKDZc1dCLS8NqKwaWgahWtLtSg06OtQuFDlIuGkdoCEn/YtONzt/I7HhrC6ZzrANvZsALZH PUuyGr2cNbSFs03vVhBWr60gWP1mDckqXBMIuzY2RrLDT/cwdnFCibBNVbU4u+H8irHrfZME a9UMkfGBt3jRaeLMjDyxLCImmZc+Yt7HchaQB0s6BVEIWhAF8KMY+gLzsqSU8PExxjbX4WYe FUC3AOZ5rw73HSUIYx1VehN8OpzpnypHPYzRYYytp5T0MEELmQN1t7dJQCcxv7TbhM/vz+zW zmEKQFFBdCLzY/i+pxOlBynmo7Xe2xlIJzB2hxX1jdkQ5o3T6A37ucdeLDejnjDqHvg2Hu6R UfoUY9C50GpAqw9NqP+71IdcGoBqgUAsT83hUiTSKCEnknLyLIkwNVuqB77X2H4LWj5cNgOa AqFH+abVgcQAXJTH5UvNgKHQ0CD+nd9uiZ8myn8olmXflckzxZwZIJRfcCG4mduwIqy4EeME kqIuVU53R5Jpr9FZEH2FUhGzdwe4a1zx9Norwe32yBPRg4K4KTtSqYgVxsSejOO17iSkRFRl nJc9Mvo7VQatvEY5MtMpuRfluCRKDos/3T5mL79aLcaK6hbatiJhQREu7XauX/8Z3z9+JLVz ebvZ72KVKBTj0kWR4aiME/0DDB/8AfgCAAA= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/23/2015 12:46 AM, Sasha Levin wrote: > Just to keep it going, here's a funny trace where kasan is catching issues > in ubsan: :) > Thanks, it turns out to be a GCC bug: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64741 As a workaround you could put kasan_disable_local()/kasan_enable_local() into ubsan_prologue()/ubsan_epilogue().