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[2620:137:e000::1:20]) by mx.google.com with ESMTP id hp15-20020a1709073e0f00b00722e51021b3si20609331ejc.74.2022.07.27.04.58.50; Wed, 27 Jul 2022 04:59:14 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-ext4-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=dSIwl6O3; spf=pass (google.com: domain of linux-ext4-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-ext4-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232153AbiG0LxX (ORCPT + 99 others); Wed, 27 Jul 2022 07:53:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40392 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232504AbiG0LxW (ORCPT ); Wed, 27 Jul 2022 07:53:22 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4E11849B7D for ; Wed, 27 Jul 2022 04:53:18 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 06BDEB8202F for ; Wed, 27 Jul 2022 11:53:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id AE290C4347C for ; Wed, 27 Jul 2022 11:53:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1658922795; bh=ErMJDgBN5YfYH6KPzp9CdkXYj/lXQm+JSWp0RpEWlr0=; h=From:To:Subject:Date:In-Reply-To:References:From; b=dSIwl6O3FY8t0JAtn0b331udN9yF3tFh2qRySlhKbgw8wjQ2GbcevGxHoONTGmScK bv6PqIctqKyM9PhUPu/VCIfXruWU8Y0B9WDPmtLQEetkLXhHcFhvYpyRRN/JdsZqgs Q8Bl8aNAnZZqnJl5Eeao+icrk7Hek+TnNmXFTlqycdnrMBxFvf/r+p1o74uYVGAJEP XwYLiNvBdbMoG6AsEgTcYwe8EvbBbWH+EcFUjkJ8lkEVYRFSsevYlsGDA5fJ+T5hNT Fxd+oFDgquo452Nj5PP+QdDDS3lahFci5Hb+5+bc/qMVFIg0ivYLuJXFxGFiaTfrnT oNaMldszsxo6Q== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 95424C433E6; Wed, 27 Jul 2022 11:53:15 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-ext4@vger.kernel.org Subject: [Bug 216283] FUZZ: BUG() triggered in fs/ext4/extent.c:ext4_ext_insert_extent() when mount and operate on crafted image Date: Wed, 27 Jul 2022 11:53:15 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo fs_ext4@kernel-bugs.osdl.org X-Bugzilla-Product: File System X-Bugzilla-Component: ext4 X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: lczerner@redhat.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: fs_ext4@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-Spam-Status: No, score=-7.7 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=3D216283 --- Comment #2 from Lukas Czerner (lczerner@redhat.com) --- 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. >=20 > --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 --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=