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=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 26EBCC433E0 for ; Mon, 29 Jun 2020 18:47:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 16A322063A for ; Mon, 29 Jun 2020 18:47:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728987AbgF2SrM (ORCPT ); Mon, 29 Jun 2020 14:47:12 -0400 Received: from outbound-smtp53.blacknight.com ([46.22.136.237]:42629 "EHLO outbound-smtp53.blacknight.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728632AbgF2SqY (ORCPT ); Mon, 29 Jun 2020 14:46:24 -0400 Received: from mail.blacknight.com (pemlinmail06.blacknight.ie [81.17.255.152]) by outbound-smtp53.blacknight.com (Postfix) with ESMTPS id 72326FB182 for ; Mon, 29 Jun 2020 16:08:09 +0100 (IST) Received: (qmail 27903 invoked from network); 29 Jun 2020 15:08:09 -0000 Received: from unknown (HELO techsingularity.net) (mgorman@techsingularity.net@[84.203.18.5]) by 81.17.254.9 with ESMTPSA (AES256-SHA encrypted, authenticated); 29 Jun 2020 15:08:09 -0000 Date: Mon, 29 Jun 2020 16:08:07 +0100 From: Mel Gorman To: Kees Cook Cc: Martin Steigerwald , LKML , Andy Lutomirski , Will Drewry Subject: Re: [REGRESSION] 5.8-rc3: seccomp crash with Chromium, QtWebEngine and related browsers: seccomp-bpf failure in syscall 0072 Message-ID: <20200629150807.GB3183@techsingularity.net> References: <2293324.KF7j4Pszzj@merkaba> <202006290739.8AB49B15@keescook> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline In-Reply-To: <202006290739.8AB49B15@keescook> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jun 29, 2020 at 07:41:56AM -0700, Kees Cook wrote: > On Mon, Jun 29, 2020 at 11:08:10AM +0200, Martin Steigerwald wrote: > > Dear Andy, Kees, Will, dear kernel community, > > > > With 5.8-rc3 there is a seccomp related crash which prevents Chromium and > > QtWebEngine from starting: > > > > Bug 208369 - seccomp crash with Chromium, QtWebEngine and related browsers: seccomp-bpf failure in syscall 0072 > > > > https://bugzilla.kernel.org/show_bug.cgi?id=208369 > > > > Reverting to 5.8-rc2 fixes the issue. > > Hi, > > It looks like this is from e9c15badbb7b ("fs: Do not check if there is a > fsnotify watcher on pseudo inodes") > > Currently being discussed here: > https://lore.kernel.org/lkml/7b4aa1e985007c6d582fffe5e8435f8153e28e0f.camel@redhat.com/#r > It's a definite problem. I've sent a revert but it hasn't hit lkml yet for whatever reason. -- Mel Gorman SUSE Labs