From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg0-f71.google.com (mail-pg0-f71.google.com [74.125.83.71]) by kanga.kvack.org (Postfix) with ESMTP id 9A7AF6B0033 for ; Thu, 23 Nov 2017 00:51:55 -0500 (EST) Received: by mail-pg0-f71.google.com with SMTP id m4so5511359pgc.23 for ; Wed, 22 Nov 2017 21:51:55 -0800 (PST) Received: from lgeamrelo12.lge.com (LGEAMRELO12.lge.com. [156.147.23.52]) by mx.google.com with ESMTP id t2si14860042pgb.591.2017.11.22.21.51.53 for ; Wed, 22 Nov 2017 21:51:54 -0800 (PST) Date: Thu, 23 Nov 2017 14:57:33 +0900 From: Joonsoo Kim Subject: Re: [PATCH 0/5] mm/kasan: advanced check Message-ID: <20171123055732.GA31720@js1304-P5Q-DELUXE> References: <20171117223043.7277-1-wen.gang.wang@oracle.com> <20171120015000.GA13507@js1304-P5Q-DELUXE> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org List-ID: To: Andrey Ryabinin Cc: Dmitry Vyukov , Wengang Wang , Linux-MM , Alexander Potapenko , kasan-dev On Wed, Nov 22, 2017 at 03:04:51PM +0300, Andrey Ryabinin wrote: > On 11/20/2017 04:50 AM, Joonsoo Kim wrote: > > > > The reason I didn't submit the vchecker to mainline is that I didn't find > > the case that this tool is useful in real life. Most of the system broken case > > can be debugged by other ways. Do you see the real case that this tool is > > helpful? If so, I think that vchecker is more appropriate to be upstreamed. > > Could you share your opinion? > > > > Isn't everything that vchecker can do and far beyond that can be done via systemtap > script using watchpoints? I don't have enough knowledge about systemtap however I guess that it's not possible. vchecker uses the ASAN hooks which are placed on all memory read/write around the kernel. We cannot easily add watchpoints for them. Thanks. -- 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