Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Subject: Re: [BREAKAGE] Since 4.18, kernel sets SB_I_NODEV implicitly on
 userns mounts, breaking systemd-nspawn
To:     Linus Torvalds <torvalds@linux-foundation.org>,
        <christian.brauner@canonical.com>
CC:     <nix.or.die@gmail.com>,
        "Eric W. Biederman" <ebiederm@xmission.com>,
        <ellierevves@gmail.com>,
        Linux List Kernel Mailing <linux-kernel@vger.kernel.org>,
        Al Viro <viro@zeniv.linux.org.uk>,
        <seth.forshee@canonical.com>, <stable@vger.kernel.org>,
        <gregkh@linuxfoundation.org>
References: <e62d4c3a-b89b-2380-7b39-66733b389145@gmail.com>
 <CAEJqkggwbNP3Q+7AWr4i64CvAdCp15jVLOtUsnMo6rLk3ExTkA@mail.gmail.com>
 <CAHk-=wjd2VJDM+RXwg30MpW45F5EHZtLErzxQzYxi4+Dnm3sjw@mail.gmail.com>
 <CAPP7u0Vo6gB86S-hZcOW9Rmki8oKHd=Lyx3x-N9gjPC4JP_YxQ@mail.gmail.com>
 <CAHk-=wg-6jYZ=bJWdyBR=n8QOfwHTZZdzSUUPgFW+NGCV-pe2g@mail.gmail.com>
 <CAPP7u0UhPyC=eewx4dYu+AU5tK_URE8_5PW9cNkK6Ppp7vkqHg@mail.gmail.com>
 <CAHk-=wg8Qrh4nvFbWttz6zPMeRKO2Twv57vZfGaQ6odsjYFEnQ@mail.gmail.com>
From:   Thomas Backlund <tmb@mageia.org>
Message-ID: <828415b6-9fee-96bd-b6b0-fd4450df97a8@mageia.org>
Date:   Sun, 23 Dec 2018 12:54:11 +0200
MIME-Version: 1.0
In-Reply-To: <CAHk-=wg8Qrh4nvFbWttz6zPMeRKO2Twv57vZfGaQ6odsjYFEnQ@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"; format=flowed
Content-Language: en-US
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Den 23-12-2018 kl. 01:28, skrev Linus Torvalds:
> On Sat, Dec 22, 2018 at 3:07 PM Christian Brauner
> <christian.brauner@canonical.com> wrote:
>>
>> However, for this case should I resend the revert?
> 
> Since I was pointed at the original email thread, I just picked it up
> from there directly. It still applied cleanly, nothing had changed in
> that area.
> 
>                  Linus
> 

This should also be picked up for 4.19 lts

Greg, it's now upstream as:

 From 94f82008ce30e2624537d240d64ce718255e0b80 Mon Sep 17 00:00:00 2001
From: Christian Brauner <christian@brauner.io>
Date: Thu, 5 Jul 2018 17:51:20 +0200
Subject: Revert "vfs: Allow userns root to call mknod on owned filesystems."

--
Thomas