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=-5.5 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 55DAAC433DB for ; Wed, 10 Feb 2021 16:42:49 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id AF17164DD6 for ; Wed, 10 Feb 2021 16:42:48 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AF17164DD6 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=i-love.sakura.ne.jp Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 3430D6B0072; Wed, 10 Feb 2021 11:42:48 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 2F2926B0073; Wed, 10 Feb 2021 11:42:48 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 230936B0074; Wed, 10 Feb 2021 11:42:48 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0130.hostedemail.com [216.40.44.130]) by kanga.kvack.org (Postfix) with ESMTP id 0E6076B0072 for ; Wed, 10 Feb 2021 11:42:48 -0500 (EST) Received: from smtpin01.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id D190E1EE6 for ; Wed, 10 Feb 2021 16:42:47 +0000 (UTC) X-FDA: 77802927174.01.hat98_130921c27611 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin01.hostedemail.com (Postfix) with ESMTP id A4E811004EC41 for ; Wed, 10 Feb 2021 16:42:47 +0000 (UTC) X-HE-Tag: hat98_130921c27611 X-Filterd-Recvd-Size: 2960 Received: from www262.sakura.ne.jp (www262.sakura.ne.jp [202.181.97.72]) by imf12.hostedemail.com (Postfix) with ESMTP for ; Wed, 10 Feb 2021 16:42:46 +0000 (UTC) Received: from fsav404.sakura.ne.jp (fsav404.sakura.ne.jp [133.242.250.103]) by www262.sakura.ne.jp (8.15.2/8.15.2) with ESMTP id 11AGdlQW018069; Thu, 11 Feb 2021 01:39:47 +0900 (JST) (envelope-from penguin-kernel@i-love.sakura.ne.jp) Received: from www262.sakura.ne.jp (202.181.97.72) by fsav404.sakura.ne.jp (F-Secure/fsigk_smtp/550/fsav404.sakura.ne.jp); Thu, 11 Feb 2021 01:39:47 +0900 (JST) X-Virus-Status: clean(F-Secure/fsigk_smtp/550/fsav404.sakura.ne.jp) Received: from [192.168.1.9] (M106072142033.v4.enabler.ne.jp [106.72.142.33]) (authenticated bits=0) by www262.sakura.ne.jp (8.15.2/8.15.2) with ESMTPSA id 11AGdl2E018065 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NO); Thu, 11 Feb 2021 01:39:47 +0900 (JST) (envelope-from penguin-kernel@i-love.sakura.ne.jp) Subject: Re: [PATCH 0/3][RESEND] add support for never printing hashed addresses To: Steven Rostedt Cc: Timur Tabi , Petr Mladek , Sergey Senozhatsky , Vlastimil Babka , Andy Shevchenko , Matthew Wilcox , akpm@linux-foundation.org, Linus Torvalds , roman.fietze@magna.com, Kees Cook , John Ogness , akinobu.mita@gmail.com, glider@google.com, Andrey Konovalov , Marco Elver , Rasmus Villemoes , Pavel Machek , linux-kernel@vger.kernel.org, linux-mm@kvack.org References: <20210210051814.845713-1-timur@kernel.org> <6da0be5a-7cb0-4943-e61f-7c3275e60cb6@i-love.sakura.ne.jp> <20210210111836.2468f10a@gandalf.local.home> From: Tetsuo Handa Message-ID: Date: Thu, 11 Feb 2021 01:39:41 +0900 User-Agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.7.0 MIME-Version: 1.0 In-Reply-To: <20210210111836.2468f10a@gandalf.local.home> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 2021/02/11 1:18, Steven Rostedt wrote: > The point of this exercise is to be able to debug the *same* kernel that > someone is having issues with. And this is to facilitate that debugging. That's too difficult to use. If a problem is not reproducible, we will have no choice but always specify "never hash pointers" command line option. If a problem is reproducible, we can rebuild that kernel with "never hash pointers" config option turned on.