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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3FEE5C04A68 for ; Wed, 27 Jul 2022 11:53:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232260AbiG0LxQ (ORCPT ); Wed, 27 Jul 2022 07:53:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40294 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232153AbiG0LxQ (ORCPT ); Wed, 27 Jul 2022 07:53:16 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 1363025285 for ; Wed, 27 Jul 2022 04:53:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1658922794; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=pMfHKlFrYjnxovEaG8YemezedsneUgj3glxjTg4e+70=; b=J7n+/k7EmMoIXMj4eOOMh8Q2loTLcXBgFa4197U3EoC8N+woKhG/cLaAc+RmS7dLLatM7T VhNA3HovW7Ji6KotgD5DgrvZUMceWSqLAMV8s1HpHioymd8W7xUbH9gBqylChGyAflBTPQ V1t5bi5Dya7wNfxUWNv1lxYBBKg3ZKU= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-418-RjB390kPNJG_b5QCft_A1w-1; Wed, 27 Jul 2022 07:53:10 -0400 X-MC-Unique: RjB390kPNJG_b5QCft_A1w-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 8B770802E5D; Wed, 27 Jul 2022 11:53:10 +0000 (UTC) Received: from fedora (unknown [10.40.192.210]) by smtp.corp.redhat.com (Postfix) with ESMTPS id E04A418EB7; Wed, 27 Jul 2022 11:53:09 +0000 (UTC) Date: Wed, 27 Jul 2022 13:53:07 +0200 From: Lukas Czerner To: "Darrick J. Wong" Cc: bugzilla-daemon@kernel.org, linux-ext4@vger.kernel.org Subject: Re: [Bug 216283] New: FUZZ: BUG() triggered in fs/ext4/extent.c:ext4_ext_insert_extent() when mount and operate on crafted image Message-ID: <20220727115307.qco6dn2tqqw52pl7@fedora> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org On Tue, Jul 26, 2022 at 01:10:24PM -0700, Darrick J. Wong wrote: > If you are going to run some scripted tool to randomly > corrupt the filesystem to find failures, then you have an > ethical and moral responsibility to do some of the work to > narrow down and identify the cause of the failure, not just > throw them at someone to do all the work. > > --D While I understand the frustration with the fuzzer bug reports like this I very much disagree with your statement about ethical and moral responsibility. The bug is in the code, it would have been there even if Wenqing Liu didn't run the tool. We know there are bugs in the code we just don't know where all of them are. Now, thanks to this report, we know a little bit more about at least one of them. That's at least a little useful. But you seem to argue that the reporter should put more work in, or not bother at all. That's wrong. Really, Wenqing Liu has no more ethical and moral responsibility than you finding and fixing the problem regardless of the bug report. I think the frustration comes from the fact that it's potentially a lot of work to untangle and fix the real problem and now when it is out there we feel obligated to fix it. And while bug reports and tools generating these can always be better and reporters can always be a bit more active in narrowing the problem down, you're of course free to ignore this until you, or anyone else, has a bit of spare time and energy to investigate. -Lukas