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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7BA02C4332F for ; Tue, 13 Dec 2022 02:25:59 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id C78E78E0003; Mon, 12 Dec 2022 21:25:58 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id C28C58E0002; Mon, 12 Dec 2022 21:25:58 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B18298E0003; Mon, 12 Dec 2022 21:25:58 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id A2AA58E0002 for ; Mon, 12 Dec 2022 21:25:58 -0500 (EST) Received: from smtpin04.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id F1456140444 for ; Tue, 13 Dec 2022 02:25:57 +0000 (UTC) X-FDA: 80235692754.04.4D14E74 Received: from mail3-165.sinamail.sina.com.cn (mail3-165.sinamail.sina.com.cn [202.108.3.165]) by imf18.hostedemail.com (Postfix) with ESMTP id 92E551C0005 for ; Tue, 13 Dec 2022 02:25:55 +0000 (UTC) Authentication-Results: imf18.hostedemail.com; dkim=none; spf=pass (imf18.hostedemail.com: domain of hdanton@sina.com designates 202.108.3.165 as permitted sender) smtp.mailfrom=hdanton@sina.com; dmarc=none ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1670898356; a=rsa-sha256; cv=none; b=I4tqSLI0A/K6D5jmIj4RfqgodOIqd0ViypCZzg2I6o5SP9z/HTdazJxeA+cGTQ2Ix5QSJM /q8Kq4MJs9d0wxEt/dBgw5mfBO9s71LCIkPCZD7qyP6tRW7wE35Q15IwZMY6InLt3iy34P WUHqfjBCw9rEkhZaA0peRvj8v/QBW/k= ARC-Authentication-Results: i=1; imf18.hostedemail.com; dkim=none; spf=pass (imf18.hostedemail.com: domain of hdanton@sina.com designates 202.108.3.165 as permitted sender) smtp.mailfrom=hdanton@sina.com; dmarc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1670898356; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ZGTdh1GpCkOifXyqzm9l6pwbv0ebPNv+Ri9yacUN1aQ=; b=QxRhAY1nTO0mC0PX4sj3zL6SlYos3I8BMxMfD578EUbeArowxodaIBSiGRhiy4VOMBYjJm vd9ikWklGSQPLWYPwH/4HfkHOSIotlwsVBZToI+3oS35DIoX5t9minm2VVWghjijggWz1T /OvhXQsmYAb8LwuyxqcB5qs2QGz8qPs= Received: from unknown (HELO localhost.localdomain)([114.249.57.238]) by sina.com (172.16.97.32) with ESMTP id 6397E1F30000CDCE; Tue, 13 Dec 2022 10:22:45 +0800 (CST) X-Sender: hdanton@sina.com X-Auth-ID: hdanton@sina.com X-SMAIL-MID: 469784676276 From: Hillf Danton To: Al Viro Cc: Marco Elver , Theodore Ts'o , Matthew Wilcox , syzbot , linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com, Aleksandr Nogikh Subject: Re: [syzbot] WARNING in do_mkdirat Date: Tue, 13 Dec 2022 10:25:40 +0800 Message-Id: <20221213022540.3401-1-hdanton@sina.com> In-Reply-To: References: <20221211002908.2210-1-hdanton@sina.com> <00000000000025ff8d05ef842be6@google.com> <20221211075612.2486-1-hdanton@sina.com> <20221211102208.2600-1-hdanton@sina.com> <20221212032911.2965-1-hdanton@sina.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Queue-Id: 92E551C0005 X-Rspamd-Server: rspam01 X-Stat-Signature: yunni4xnj9c9j1gmejghux6izay4cger X-HE-Tag: 1670898355-30243 X-HE-Meta: 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 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 13 Dec 2022 01:44:08 +0000 Al Viro > On Mon, Dec 12, 2022 at 08:29:10PM +0100, Marco Elver wrote: > > > > > Given the call trace above, how do you know the ntfs3 guys should be also > > > > Cced in addition to AV? What if it would take more than three months for > > > > syzbot to learn the skills in your mind? > > Depends. If you really are talking about the *BOT* learning to do > that on its own, it certainly would take more than 3 months; strong AI > is hard. If, OTOH, it is not an AI research project and intervention of > somebody capable of passing the Turing test does not violate the purity > of experiment... Surely converting "if it mounts an image as filesystem > of type $T, grep the tree for "MODULE_ALIAS_FS($T)" and treat that > as if a function from the resulting file had been found in stack trace" > into something usable for the bot should not take more than 3 months, > should it? > > If expressing that rule really takes "more than three months", I would > suggest that something is very wrong with the bot architecture... Nope given the fixes to what the bot reported in the last three years, certainly.