From: Kees Cook <keescook@chromium.org>
To: Christian Brauner <christian.brauner@ubuntu.com>
Cc: Sargun Dhillon <sargun@sargun.me>,
containers@lists.linux-foundation.org, cyphar@cyphar.com,
jannh@google.com, jeffv@google.com, linux-api@vger.kernel.org,
linux-kernel@vger.kernel.org, palmer@google.com,
rsesek@google.com, tycho@tycho.ws,
Matt Denton <mpdenton@google.com>,
Al Viro <viro@zeniv.linux.org.uk>
Subject: Re: [PATCH v2 2/3] seccomp: Introduce addfd ioctl to seccomp user notifier
Date: Sat, 30 May 2020 09:14:50 -0700 [thread overview]
Message-ID: <202005300911.AAE71F1955@keescook> (raw)
In-Reply-To: <20200530141329.tjrtrdy66jhqzojy@wittgenstein>
On Sat, May 30, 2020 at 04:13:29PM +0200, Christian Brauner wrote:
> On Fri, May 29, 2020 at 10:47:12PM -0700, Kees Cook wrote:
> > Oh hey! Look at scm_detach_fds_compat(). It needs this too. (And it's
> > missing the cgroup tracking.) That would fix:
> >
> > 48a87cc26c13 ("net: netprio: fd passed in SCM_RIGHTS datagram not set correctly")
> > d84295067fc7 ("net: net_cls: fd passed in SCM_RIGHTS datagram not set correctly")
> >
> > So, yes, let's get this fixed up. I'd say first fix the missing sock
> > update in the compat path (so it can be CCed stable). Then fix the missing
>
> send this patch to net.
>
> > sock update in pidfd_getfd() (so it can be CCed stable), then write the
>
> send this patch to me.
>
> > helper with a refactoring of scm_detach_fds(), scm_detach_fds_compat(),
>
> this would be net-next most likely.
>
> > and pidfd_getfd(). And then add the addfd seccomp user_notif ioctl cmd.
>
> If you do this first, I'd suggest you resend the series here after all
> this has been merged. We're not in a rush since this won't make it for
> the 5.8 merge window anyway. By the time the changes land Kees might've
> applied my changes to his tree so you can rebase yours on top of it
> relieving Kees from fixing up merge conflicts.
>
> About your potential net and net-next changes. Just in case you don't
> know - otherwise ignore this - please read and treat
> https://www.kernel.org/doc/Documentation/networking/netdev-FAQ.txt
> as the gospel. Also note, that after this Sunday - assuming Linus
> releases - net-next will be closed until the merge window is closed,
> i.e. for _at least_ 2 weeks. After the merge window closes you can check
> http://vger.kernel.org/~davem/net-next.html
> which either has a picture saying "Come In We're Open" or a sign saying
> "Sorry, We're Closed". Only send when the first sign is up or the wrath
> of Dave might hit you. :)
Yeah, timing is awkward here. I was originally thinking it could all
just land via seccomp (with appropriate Acks). Hmmm.
--
Kees Cook
next prev parent reply other threads:[~2020-05-30 16:14 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-28 11:08 [PATCH v2 0/3] Add seccomp notifier ioctl that enables adding fds Sargun Dhillon
2020-05-28 11:08 ` [PATCH v2 1/3] seccomp: Add find_notification helper Sargun Dhillon
2020-05-29 6:23 ` Kees Cook
2020-05-29 17:40 ` Sargun Dhillon
2020-05-29 20:14 ` Kees Cook
2020-05-29 9:57 ` Christian Brauner
2020-05-28 11:08 ` [PATCH v2 2/3] seccomp: Introduce addfd ioctl to seccomp user notifier Sargun Dhillon
2020-05-29 7:31 ` Kees Cook
2020-05-29 7:38 ` Christian Brauner
2020-05-29 7:45 ` Kees Cook
2020-05-30 1:10 ` Sargun Dhillon
2020-05-30 2:43 ` Kees Cook
2020-05-30 3:17 ` Jann Horn
2020-05-30 5:22 ` Kees Cook
2020-05-30 13:58 ` Christian Brauner
2020-05-30 16:09 ` Kees Cook
2020-05-30 3:58 ` Sargun Dhillon
2020-05-30 5:47 ` Kees Cook
2020-05-30 14:13 ` Christian Brauner
2020-05-30 16:14 ` Kees Cook [this message]
2020-05-30 16:21 ` Christian Brauner
2020-05-30 14:08 ` Al Viro
2020-05-30 16:07 ` Kees Cook
2020-06-01 19:02 ` Sargun Dhillon
2020-06-01 19:59 ` Kees Cook
2020-05-29 9:24 ` Giuseppe Scrivano
2020-05-29 10:32 ` Christian Brauner
2020-05-29 13:31 ` Christian Brauner
2020-05-29 22:35 ` Sargun Dhillon
2020-05-28 11:08 ` [PATCH v2 3/3] selftests/seccomp: Test SECCOMP_IOCTL_NOTIF_ADDFD Sargun Dhillon
2020-05-29 7:41 ` Kees Cook
2020-05-29 13:29 ` Tycho Andersen
2020-05-29 18:46 ` Sargun Dhillon
2020-05-29 19:12 ` Tycho Andersen
2020-05-29 20:09 ` Kees Cook
2020-05-29 13:30 ` [PATCH v2 0/3] Add seccomp notifier ioctl that enables adding fds Tycho Andersen
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