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 C62D3C43334 for ; Tue, 28 Jun 2022 22:44:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229535AbiF1Wo5 (ORCPT ); Tue, 28 Jun 2022 18:44:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46678 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229460AbiF1Wo4 (ORCPT ); Tue, 28 Jun 2022 18:44:56 -0400 Received: from mail105.syd.optusnet.com.au (mail105.syd.optusnet.com.au [211.29.132.249]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id D3B0227CF6 for ; Tue, 28 Jun 2022 15:44:55 -0700 (PDT) Received: from dread.disaster.area (pa49-181-2-147.pa.nsw.optusnet.com.au [49.181.2.147]) by mail105.syd.optusnet.com.au (Postfix) with ESMTPS id 08AC010E7829; Wed, 29 Jun 2022 08:44:54 +1000 (AEST) Received: from dave by dread.disaster.area with local (Exim 4.92.3) (envelope-from ) id 1o6Jwz-00CF6v-5M; Wed, 29 Jun 2022 08:44:53 +1000 Date: Wed, 29 Jun 2022 08:44:53 +1000 From: Dave Chinner To: "Darrick J. Wong" Cc: Ayushman Dutta , chandanrlinux@gmail.com, linux-xfs Subject: Re: syzkaller@googlegroups.com Message-ID: <20220628224453.GL227878@dread.disaster.area> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Optus-CM-Score: 0 X-Optus-CM-Analysis: v=2.4 cv=VuxAv86n c=1 sm=1 tr=0 ts=62bb8467 a=ivVLWpVy4j68lT4lJFbQgw==:117 a=ivVLWpVy4j68lT4lJFbQgw==:17 a=4RBUngkUAAAA:8 a=kj9zAlcOel0A:10 a=iWYZZVQfT40A:10 a=JPEYwPQDsx4A:10 a=7-415B0cAAAA:8 a=YJYnwHNeAZZscAt-6PAA:9 a=CjuIK1q_8ugA:10 a=_sbA2Q-Kp09kWB8D3iXc:22 a=biEYGPWJfzWAr4FL6Ov7:22 Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org On Tue, Jun 28, 2022 at 03:07:51PM -0700, Darrick J. Wong wrote: > [+linux-xfs] > > On Tue, Jun 28, 2022 at 02:27:36PM -0500, Ayushman Dutta wrote: > > Kernel Version: 5.10.122 > > > > Kernel revision: 58a0d94cb56fe0982aa1ce9712e8107d3a2257fe > > > > Syzkaller Dashboard report: > > > > ------------[ cut here ]------------ > > WARNING: CPU: 1 PID: 8503 at mm/util.c:618 kvmalloc_node+0x15a/0x170 > > mm/util.c:618 > > No. Do not DM your syzbot reports to random XFS developers. > > Especially do not send me *three message* with 300K of attachments; even > the regular syzbot runners dump all that stuff into a web portal. > > 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 else to do all the work. /me reads the stack trace, takes 30s to look at the change log, finds commit 29d650f7e3ab ("xfs: reject crazy array sizes being fed to XFS_IOC_GETBMAP*"). -Dave. -- Dave Chinner david@fromorbit.com