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=-1.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 0C936C433E0 for ; Mon, 29 Jun 2020 21:02:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E041720759 for ; Mon, 29 Jun 2020 21:02:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="f1Zw2us9" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390181AbgF2VCX (ORCPT ); Mon, 29 Jun 2020 17:02:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43354 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731176AbgF2TMu (ORCPT ); Mon, 29 Jun 2020 15:12:50 -0400 Received: from mail-pj1-x1041.google.com (mail-pj1-x1041.google.com [IPv6:2607:f8b0:4864:20::1041]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 98232C03079A for ; Mon, 29 Jun 2020 08:32:57 -0700 (PDT) Received: by mail-pj1-x1041.google.com with SMTP id i4so8182942pjd.0 for ; Mon, 29 Jun 2020 08:32:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=4t61qDcD9t0KKwIOWrgMLHqw6luF403ud9+USbhr5Do=; b=f1Zw2us9o49Eu71aJrlGHo04ZRY7QZzbRup9cDhXPrdys5NCbtrwwZ9pEbrgIAcFDV eM2fom5cdkPTZmiR9/3k2DDYeAe7mz0pGBRrmu9J1eZQ5+pU8OQPFma2kxCA8YoEYT6/ QNTls6pHGfC4NzMoKRE9KfVtOP3HYkGtLvqY0= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=4t61qDcD9t0KKwIOWrgMLHqw6luF403ud9+USbhr5Do=; b=cVE18yf2oqtJPIMSy7Rnbp1GGyPNS3APSZN9CCSxlCNlyiAZ5B/L/Z9IQhbC9KKTDb YvlFhG5+QfZCxZydmMftihq7O4X0xaOlNKn8RsoPMzw1EFZ4EYh1N+E0pNWjdt88B/0n 47Dm31snvufPyml9kCnGoRpZbZ3gnderpZTj3hdtX2oNoX/Y8Xq2d+o0HnaWE3Hr+C02 hYnysXjWIKXIde0KLItaJNN7CXGa1cC+PJM3W1uV1/ELLlJuvnIjqI1FVyK8ABjt+Sn1 3bQlrjzBy8VFJdNLqADTvNcf1fUTNzoLGSp05SfqCkinbivh2edlbbAkfklo4iIFJHDM 0wZQ== X-Gm-Message-State: AOAM530WrrvPydG49qZvpsR7S9m8WBES/cLapxqhNsXyOoeooPyCtIjZ LGg/cDJuyztZD1oQvX4b5CKRjg== X-Google-Smtp-Source: ABdhPJzcj9ClCuDDBM/Zy5UtPW75kM74Sk8AWoUEmrvlZaKFndJT7HdEDX9CcTWtQPZhETha0qm7rw== X-Received: by 2002:a17:90a:2a04:: with SMTP id i4mr17890051pjd.91.1593444777172; Mon, 29 Jun 2020 08:32:57 -0700 (PDT) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id n189sm122007pfn.108.2020.06.29.08.32.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 29 Jun 2020 08:32:56 -0700 (PDT) Date: Mon, 29 Jun 2020 08:32:55 -0700 From: Kees Cook To: Mel Gorman 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: <202006290831.E9E695450@keescook> References: <2293324.KF7j4Pszzj@merkaba> <202006290739.8AB49B15@keescook> <20200629150807.GB3183@techsingularity.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200629150807.GB3183@techsingularity.net> 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 04:08:07PM +0100, Mel Gorman wrote: > 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. Okay, thanks! (Yeah, I think vger might be stuck?) -- Kees Cook