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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 EA3C0C2BA19 for ; Fri, 10 Apr 2020 01:12:01 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id B06692074F for ; Fri, 10 Apr 2020 01:12:01 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B06692074F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=mit.edu Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 075568E0027; Thu, 9 Apr 2020 21:12:01 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 025628E0003; Thu, 9 Apr 2020 21:12:00 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E7E328E0027; Thu, 9 Apr 2020 21:12:00 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0199.hostedemail.com [216.40.44.199]) by kanga.kvack.org (Postfix) with ESMTP id D1DC88E0003 for ; Thu, 9 Apr 2020 21:12:00 -0400 (EDT) Received: from smtpin25.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 97D8BA8E8 for ; Fri, 10 Apr 2020 01:12:00 +0000 (UTC) X-FDA: 76690168800.25.way04_117c0abcf8b5c X-HE-Tag: way04_117c0abcf8b5c X-Filterd-Recvd-Size: 3895 Received: from outgoing.mit.edu (outgoing-auth-1.mit.edu [18.9.28.11]) by imf47.hostedemail.com (Postfix) with ESMTP for ; Fri, 10 Apr 2020 01:11:59 +0000 (UTC) Received: from callcc.thunk.org (pool-72-93-95-157.bstnma.fios.verizon.net [72.93.95.157]) (authenticated bits=0) (User authenticated as tytso@ATHENA.MIT.EDU) by outgoing.mit.edu (8.14.7/8.12.4) with ESMTP id 03A1BYn0032116 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 9 Apr 2020 21:11:35 -0400 Received: by callcc.thunk.org (Postfix, from userid 15806) id 4500142013D; Thu, 9 Apr 2020 21:11:34 -0400 (EDT) Date: Thu, 9 Apr 2020 21:11:34 -0400 From: "Theodore Y. Ts'o" To: Linus Torvalds Cc: Eric Biggers , Matthew Wilcox , Andrew Morton , Dmitry Vyukov , Peter Xu , LKML , Linux-MM , syzkaller-bugs , Stephen Rothwell Subject: Re: [PATCH 0/2] mm: Two small fixes for recent syzbot reports Message-ID: <20200410011134.GG45598@mit.edu> References: <20200409114940.GT21484@bombadil.infradead.org> <20200409111604.c778ff091c00fab5db095e48@linux-foundation.org> <20200409121250.d6bba6965b86c8dfcf325fbc@linux-foundation.org> <20200409195633.GZ21484@bombadil.infradead.org> <20200409202751.GA7976@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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 Thu, Apr 09, 2020 at 01:34:18PM -0700, Linus Torvalds wrote: > > FWIW, the issue of "syzbot report sent and ignored for months/years" is actually > > a much broader one which applies to all bugs, not just build / test breakages. > > I don't know what to do about that, but it may be that people just > don't judge the bugs interesting or assume that they are old. Syzkaller bugs which requuire (a) root privileges to trigger, or (b) require a deliberately corrupted file system are things which I don't consider super interesting. (For the latter, I'll usually wait for some other file system fuzzer to find it, such as Hydra, because Syzkaller makes it painful extract out the file system image, where as other file system fuzzers are *much* more file system developer friendly.) This shouldn't be a surprise to Dmitry, because I've given these feedbacks to him before. It would be nice if there was some way we could triage Syzkaller bugs into different buckets (requires root, lower to P2; requires a corrupted file system image, lower to P2). Unfortunately, that would require Syzkaller to have some kind of login system and way to track state, and Dmitry doesn't want to replicate the functionality of a bug tracker. > That's what made bugzilla so useless - being flooded with stale bugs > that might not be worth worrying about, and no way to really tell. At least with Bugzilla, it becomes possible to attach priorities and flags to them, instead of trying to assume that developers should treat all Syzkaller bugs as the same priority. Because when you do insist that all bugs be treated as high priority, many people will just treat them *all* as a P2 bug, especially when there are so many. - Ted