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From: Alexei Starovoitov <alexei.starovoitov@gmail.com>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Kees Cook <keescook@chromium.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	Alexei Starovoitov <ast@kernel.org>,
	David Miller <davem@davemloft.net>,
	Al Viro <viro@zeniv.linux.org.uk>, bpf <bpf@vger.kernel.org>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Jakub Kicinski <kuba@kernel.org>,
	Masahiro Yamada <yamada.masahiro@socionext.com>,
	Gary Lin <GLin@suse.com>, Bruno Meneguele <bmeneg@redhat.com>
Subject: Re: [RFC][PATCH] net/bpfilter: Remove this broken and apparently unmantained
Date: Thu, 11 Jun 2020 16:31:34 -0700
Message-ID: <20200611233134.5vofl53dj5wpwp5j@ast-mbp.dhcp.thefacebook.com> (raw)
In-Reply-To: <87d066vd4y.fsf@x220.int.ebiederm.org>

On Wed, Jun 10, 2020 at 04:12:29PM -0500, Eric W. Biederman wrote:
> Alexei Starovoitov <alexei.starovoitov@gmail.com> writes:
> 
> > On Tue, Jun 09, 2020 at 03:02:30PM -0500, Eric W. Biederman wrote:
> >> Alexei Starovoitov <alexei.starovoitov@gmail.com> writes:
> >> 
> >> > bpf_lsm is that thing that needs to load and start acting early.
> >> > It's somewhat chicken and egg. fork_usermode_blob() will start a process
> >> > that will load and apply security policy to all further forks and
> >> > execs.
> >> 
> >> What is the timeframe for bpf_lsm patches wanting to use
> >> fork_usermode_blob()?
> >> 
> >> Are we possibly looking at something that will be ready for the next
> >> merge window?
> >
> > In bpf space there are these that want to use usermode_blobs:
> > 1. bpfilter itself.
> > First of all I think we made a mistake delaying landing the main patches:
> > https://lore.kernel.org/patchwork/patch/902785/
> > https://lore.kernel.org/patchwork/patch/902783/
> > without them bpfilter is indeed dead. That probably was the reason
> > no one was brave enough to continue working on it.
> > So I think the landed skeleton of bpfilter can be removed.
> > I think no user space code will notice that include/uapi/linux/bpfilter.h
> > is gone. So it won't be considered as user space breakage.
> > Similarly CONFIG_BPFILTER can be nuked too.
> > bpftool is checking for it (see tools/bpf/bpftool/feature.c)
> > but it's fine to remove it.
> > I still think that the approach taken was a correct one, but
> > lifting that project off the ground was too much for three of us.
> > So when it's staffed appropriately we can re-add that code.
> >
> > 2. bpf_lsm.
> > It's very active at the moment. I'm working on it as well
> > (sleepable progs is targeting that), but I'm not sure when folks
> > would have to have it during the boot. So far it sounds that
> > they're addressing more critical needs first. "bpf_lsm ready at boot"
> > came up several times during "bpf office hours" conference calls,
> > so it's certainly on the radar. If I to guess I don't think
> > bpf_lsm will use usermode_blobs in the next 6 weeks.
> > More likely 2-4 month.
> >
> > 3. bpf iterator.
> > It's already capable extension of several things in /proc.
> > See https://lore.kernel.org/bpf/20200509175921.2477493-1-yhs@fb.com/
> > Cat-ing bpf program as "cat /sys/fs/bpf/my_ipv6_route"
> > will produce the same human output as "cat /proc/net/ipv6_route".
> > The key difference is that bpf is all tracing based and it's unstable.
> > struct fib6_info can change and prog will stop loading.
> > There are few FIXME in there. That is being addressed right now.
> > After that the next step is to make cat-able progs available
> > right after boot via usermode_blobs.
> > Unlike cases 1 and 2 here we don't care that they appear before pid 1.
> > They can certainly be chef installed and started as services.
> > But they are kernel dependent, so deploying them to production
> > is much more complicated when they're done as separate rpm.
> > Testing is harder and so on. Operational issues pile up when something
> > that almost like kernel module is done as a separate package.
> > Hence usermode_blob fits the best.
> > Of course we were not planning to add a bunch of them to kernel tree.
> > The idea was to add only _one_ such cat-able bpf prog and have it as
> > a selftest for usermode_blob + bpf_iter. What we want our users to
> > see in 'cat my_ipv6_route' is probably different from other companies.
> > These patches will likely be using usermode_blob() in the next month.
> >
> > But we don't need to wait. We can make the progress right now.
> > How about we remove bpfilter uapi and rename net/bpfilter/bpfilter_kern.c
> > into net/umb/umb_test.c only to exercise Makefile to build elf file
> > from simple main.c including .S with incbin trick
> > and kernel side that does fork_usermode_blob().
> > And that's it.
> > net/ipv4/bpfilter/sockopt.c and kconfig can be removed.
> > That would be enough base to do use cases 2 and 3 above.
> > Having such selftest will be enough to adjust the layering
> > for fork_usermode_blob(), right?
> 
> If I understand correctly you are asking people to support out of tree
> code.  I see some justification for this functionality for in-tree code.
> For out of tree code there really is no way to understand support or
> maintain the code.

It's just like saying that sys_finit_module() is there to support out
of tree code. There are in- and out- tree modules and there will be
in- and out- of tree bpf programs, but the focus is on those that
are relevant for the long term future of the kernel.
The 1 case above is in-tree only. There is nothing in bpfilter
that makes sense out of tree.
The 2 case (bpf_lsm) is primarily in-tree. Security is something
everyone wants its own way, but majority of bpf_lsm functionality
should live in-tree.
The 3 case is mostly out-of-tree. If there was obvious way to
extend /proc it could have been in-tree, but no one will agree.

> We probably also need to have a conversation about why this
> functionality is a better choice that using a compiled in initramfs,
> such as can be had by setting CONFIG_INITRAMFS_SOURCE.

I explained it several times already. I don't see how initramfs solves 1 and 2.

> Even with this write up and the conversations so far I don't understand
> what problem fork_usermode_blob is supposed to be solving.  Is there
> anything kernel version dependent about bpf_lsm?  For me the primary
> justification of something like fork_usermode_blob is something that is
> for all practical purposes a kernel module but it just happens to run in
> usermode.

that's what it is. It's a kernel module that runs in user space.

> From what little I know about bpf_lsm that isn't the case.  So far all

It is.

> you have mentioned is that bpf_lsm needs to load early.  That seems like
> something that could be solved by a couple of lines init/main.c that
> forks and exec's a program before init if it is present.  Maybe that
> also needs a bit of protection so the bootloader can't override the
> binary.
> 
> The entire concept of a loadable lsm has me scratching my head.  Last
> time that concept was seriously looked at the races for initializing per
> object data were difficult enough to deal with modular support was
> removed from all of the existing lsms.

I'm not sure what races you're talking about.
usermode_blob will interact with kernel via syscalls and other standard
communication mechanism.

> Not to mention there are places where the lsm hooks are a pretty lousy
> API and will be refactored to make things better with no thought of any
> out of tree code.

I don't see how refactoring LSM hooks is relevant in this discussion.

> 
> > If I understood you correctly you want to replace pid_t
> > in 'struct umh_info' with proper 'struct pid' pointer that
> > is refcounted, so user process's exit is clean? What else?
> 
> No "if (filename)" or "if (file)" on the exec code paths.  No extra case
> for the LSM's to have to deal with.  Nothing fork_usermode_blob does is
> something that can't be done from userspace as far as execve is
> concerned so there is no justification for any special cases in the core
> of the exec code.

Adding getname_kernel() instead of filename==NULL is trivial enough
and makes sense as a cleanup.
But where do you see 'if (file)' ?
The correct 'file' pointer is passed from shmem_kernel_file_setup() all
the way to exec.

> Getting the deny_write_count and the reference count correct on the file
> argument as well as getting BPRM_FLAGS_PATH_INACCESSIBLE set.

There is no fd because there is no task, but there is a file. I think 
do_execve should assume BINPRM_FLAGS_PATH_INACCESSIBLE in this case.

> Using the proper type for argv and envp.

I guess that's going to be a part of other cleanup.

> Those are the things I know of that need to be addressed.
> 
> 
> Getting the code refactored so that the do_open_execat can be called
> in do_execveat_common instead of __do_execve_file is enough of a
> challenge of code motion I really would rather not do that.   Unfortunately that is
> the only way I can see right now to have both do_execveat_common and
> do_execve_file pass in a struct file.

The 'struct file' is there. Please take another look at the code.

> Calling deny_write_access and get_file in do_execve_file and probably
> a bit more is the only way I can see to cleanly isoloate the special
> cases fork_usermode_blob brings to the table.
> 
> 
> Strictly speaking I am also aware of the issue that the kernel has to
> use set_fs(KERNEL_DS) to allow argv and envp to exist in kernel space
> instead of userspace.  That needs to be fixed as well, but for all
> kernel uses of exec.  So any work fixing fork_usermode_blob can ignore
> that issue.

well, this is the problem of usermodehelper_exec.
usermode_blob doesn't use argv/envp.
They could be NULL for all practical purpose.

  reply index

Thread overview: 193+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20200329005528.xeKtdz2A0%akpm@linux-foundation.org>
     [not found] ` <13fb3ab7-9ab1-b25f-52f2-40a6ca5655e1@i-love.sakura.ne.jp>
     [not found]   ` <202006051903.C44988B@keescook>
2020-06-06 19:20     ` Eric W. Biederman
2020-06-06 20:19       ` Alexei Starovoitov
2020-06-06 22:33         ` Linus Torvalds
2020-06-07  1:49           ` Alexei Starovoitov
2020-06-07  2:19             ` Linus Torvalds
2020-06-07 16:09               ` Eric W. Biederman
2020-06-08 16:20               ` Alexei Starovoitov
2020-06-08 16:40                 ` Greg KH
2020-06-08 18:35                 ` Kees Cook
2020-06-09  1:26                   ` Alexei Starovoitov
2020-06-09 15:37                     ` Kees Cook
2020-06-09 19:51                 ` Eric W. Biederman
2020-06-07  2:31             ` Tetsuo Handa
2020-06-08 16:23               ` Alexei Starovoitov
2020-06-08 23:22                 ` Tetsuo Handa
2020-06-09  1:28                   ` Alexei Starovoitov
2020-06-09  5:29                     ` Tetsuo Handa
2020-06-09 22:32                       ` Alexei Starovoitov
2020-06-09 23:30                         ` Tetsuo Handa
2020-06-10  0:05                           ` Alexei Starovoitov
2020-06-10  3:08                             ` Tetsuo Handa
2020-06-10  3:32                               ` Alexei Starovoitov
2020-06-10  7:30                                 ` Tetsuo Handa
2020-06-10 16:24                                   ` Casey Schaufler
2020-06-09 20:02                 ` Eric W. Biederman
2020-06-09 23:56                   ` Alexei Starovoitov
2020-06-10 21:12                     ` Eric W. Biederman
2020-06-11 23:31                       ` Alexei Starovoitov [this message]
2020-06-12  0:57                         ` Tetsuo Handa
2020-06-13  3:38                           ` Alexei Starovoitov
2020-06-13  4:22                             ` Tetsuo Handa
2020-06-13 14:08                         ` Eric W. Biederman
2020-06-13 15:33                           ` Alexei Starovoitov
2020-06-13 16:14                             ` Alexei Starovoitov
2020-06-14 14:51                               ` Eric W. Biederman
2020-06-16  1:55                                 ` Alexei Starovoitov
2020-06-16 16:21                                   ` Alexei Starovoitov
2020-06-23 18:04                                   ` Eric W. Biederman
2020-06-23 18:35                                     ` Alexei Starovoitov
2020-06-23 18:53                                       ` Eric W. Biederman
2020-06-23 19:40                                         ` Alexei Starovoitov
2020-06-24  1:51                                           ` Tetsuo Handa
2020-06-24  4:00                                             ` Alexei Starovoitov
2020-06-24  4:58                                               ` Tetsuo Handa
2020-06-24  6:39                                                 ` Alexei Starovoitov
2020-06-24  7:05                                                   ` Tetsuo Handa
2020-06-24 15:41                                                     ` Casey Schaufler
2020-06-24 17:54                                                       ` Alexei Starovoitov
2020-06-24 19:48                                                         ` Casey Schaufler
2020-06-24  6:05                                               ` Alexei Starovoitov
2020-06-24 14:18                                                 ` Alexei Starovoitov
2020-06-24 12:13                                           ` Eric W. Biederman
2020-06-24 14:26                                             ` Alexei Starovoitov
2020-06-24 23:14                                               ` Tetsuo Handa
2020-06-25  1:35                                                 ` Alexei Starovoitov
2020-06-25  6:38                                                   ` Tetsuo Handa
2020-06-25  9:57                                                     ` Greg KH
2020-06-25 11:03                                                       ` Tetsuo Handa
2020-06-25 12:07                                                         ` Greg KH
2020-06-25 14:21                                                           ` Tetsuo Handa
2020-06-25 19:34                                                           ` David Miller
2020-06-26  1:36                                                             ` Linus Torvalds
2020-06-26  1:51                                                               ` Alexei Starovoitov
2020-06-26  4:58                                                                 ` Tetsuo Handa
2020-06-26  5:41                                                                   ` Alexei Starovoitov
2020-06-26  6:20                                                                     ` Tetsuo Handa
2020-06-26  6:39                                                                       ` Alexei Starovoitov
2020-06-26 12:51                                                               ` [PATCH 00/14] Make the user mode driver code a better citizen Eric W. Biederman
2020-06-26 12:53                                                                 ` [PATCH 01/14] umh: Capture the pid in umh_pipe_setup Eric W. Biederman
2020-06-26 12:53                                                                 ` [PATCH 02/14] umh: Move setting PF_UMH into umh_pipe_setup Eric W. Biederman
2020-06-26 12:54                                                                 ` [PATCH 03/14] umh: Rename the user mode driver helpers for clarity Eric W. Biederman
2020-06-26 12:54                                                                 ` [PATCH 04/14] umh: Remove call_usermodehelper_setup_file Eric W. Biederman
2020-06-26 12:55                                                                 ` [PATCH 05/14] umh: Separate the user mode driver and the user mode helper support Eric W. Biederman
2020-06-26 16:22                                                                   ` Tetsuo Handa
2020-06-26 16:45                                                                     ` Eric W. Biederman
2020-06-27  1:26                                                                       ` Tetsuo Handa
2020-06-27  4:21                                                                         ` Eric W. Biederman
2020-06-27  4:36                                                                           ` Tetsuo Handa
2020-06-26 12:55                                                                 ` [PATCH 06/14] umd: For clarity rename umh_info umd_info Eric W. Biederman
2020-06-26 15:37                                                                   ` Kees Cook
2020-06-26 16:31                                                                     ` Eric W. Biederman
2020-06-26 12:56                                                                 ` [PATCH 07/14] umd: Rename umd_info.cmdline umd_info.driver_name Eric W. Biederman
2020-06-26 12:56                                                                 ` [PATCH 08/14] umd: Transform fork_usermode_blob into fork_usermode_driver Eric W. Biederman
2020-06-26 12:57                                                                 ` [PATCH 09/14] umh: Stop calling do_execve_file Eric W. Biederman
2020-06-26 12:57                                                                 ` [PATCH 10/14] exec: Remove do_execve_file Eric W. Biederman
2020-06-26 12:58                                                                 ` [PATCH 11/14] bpfilter: Move bpfilter_umh back into init data Eric W. Biederman
2020-06-26 12:58                                                                 ` [PATCH 12/14] umd: Track user space drivers with struct pid Eric W. Biederman
2020-06-26 12:59                                                                 ` [PATCH 13/14] bpfilter: Take advantage of the facilities of " Eric W. Biederman
2020-06-26 12:59                                                                 ` [PATCH 14/14] umd: Remove exit_umh Eric W. Biederman
2020-06-26 13:48                                                                 ` [PATCH 00/14] Make the user mode driver code a better citizen Eric W. Biederman
2020-06-29 19:55                                                                   ` [PATCH v2 00/15] " Eric W. Biederman
2020-06-29 19:56                                                                     ` [PATCH v2 01/15] umh: Capture the pid in umh_pipe_setup Eric W. Biederman
2020-06-29 19:57                                                                     ` [PATCH v2 02/15] umh: Move setting PF_UMH into umh_pipe_setup Eric W. Biederman
2020-06-29 19:57                                                                     ` [PATCH v2 03/15] umh: Rename the user mode driver helpers for clarity Eric W. Biederman
2020-06-29 19:59                                                                     ` [PATCH v2 04/15] umh: Remove call_usermodehelper_setup_file Eric W. Biederman
2020-06-29 20:00                                                                     ` [PATCH v2 05/15] umh: Separate the user mode driver and the user mode helper support Eric W. Biederman
2020-06-30 16:58                                                                       ` Linus Torvalds
2020-07-01 17:18                                                                         ` Eric W. Biederman
2020-07-01 17:42                                                                           ` Alexei Starovoitov
2020-06-29 20:01                                                                     ` [PATCH v2 06/15] umd: For clarity rename umh_info umd_info Eric W. Biederman
2020-06-29 20:02                                                                     ` [PATCH v2 07/15] umd: Rename umd_info.cmdline umd_info.driver_name Eric W. Biederman
2020-06-29 20:03                                                                     ` [PATCH v2 08/15] umd: Transform fork_usermode_blob into fork_usermode_driver Eric W. Biederman
2020-06-29 20:03                                                                     ` [PATCH v2 09/15] umh: Stop calling do_execve_file Eric W. Biederman
2020-06-29 20:04                                                                     ` [PATCH v2 10/15] exec: Remove do_execve_file Eric W. Biederman
2020-06-30  5:43                                                                       ` Christoph Hellwig
2020-06-30 12:14                                                                         ` Eric W. Biederman
2020-06-30 13:38                                                                           ` Christoph Hellwig
2020-06-30 14:28                                                                             ` Eric W. Biederman
2020-06-30 16:55                                                                               ` Alexei Starovoitov
2020-06-29 20:05                                                                     ` [PATCH v2 11/15] bpfilter: Move bpfilter_umh back into init data Eric W. Biederman
2020-06-29 20:06                                                                     ` [PATCH v2 12/15] umd: Track user space drivers with struct pid Eric W. Biederman
2020-06-29 20:06                                                                     ` [PATCH v2 13/15] bpfilter: Take advantage of the facilities of " Eric W. Biederman
2020-06-29 20:07                                                                     ` [PATCH v2 14/15] umd: Remove exit_umh Eric W. Biederman
2020-06-29 20:08                                                                     ` [PATCH v2 15/15] umd: Stop using split_argv Eric W. Biederman
2020-06-29 22:12                                                                     ` [PATCH v2 00/15] Make the user mode driver code a better citizen Alexei Starovoitov
2020-06-30  1:13                                                                       ` Eric W. Biederman
2020-06-30  6:16                                                                         ` Tetsuo Handa
2020-06-30 12:29                                                                       ` Eric W. Biederman
2020-06-30 13:21                                                                         ` Tetsuo Handa
2020-07-02 13:08                                                                           ` Eric W. Biederman
2020-07-02 13:40                                                                             ` Tetsuo Handa
2020-07-02 16:02                                                                               ` Eric W. Biederman
2020-07-03 13:19                                                                                 ` Tetsuo Handa
2020-07-03 22:25                                                                                   ` Eric W. Biederman
2020-07-04  6:57                                                                                     ` Tetsuo Handa
2020-07-08  4:46                                                                                       ` Eric W. Biederman
2020-06-30 16:52                                                                         ` Alexei Starovoitov
2020-07-01 17:12                                                                           ` Eric W. Biederman
2020-07-02 16:40                                                                     ` [PATCH v3 00/16] " Eric W. Biederman
2020-07-02 16:41                                                                       ` [PATCH v3 01/16] umh: Capture the pid in umh_pipe_setup Eric W. Biederman
2020-07-02 16:41                                                                       ` [PATCH v3 02/16] umh: Move setting PF_UMH into umh_pipe_setup Eric W. Biederman
2020-07-02 16:41                                                                       ` [PATCH v3 03/16] umh: Rename the user mode driver helpers for clarity Eric W. Biederman
2020-07-02 16:41                                                                       ` [PATCH v3 04/16] umh: Remove call_usermodehelper_setup_file Eric W. Biederman
2020-07-02 16:41                                                                       ` [PATCH v3 05/16] umh: Separate the user mode driver and the user mode helper support Eric W. Biederman
2020-07-02 16:41                                                                       ` [PATCH v3 06/16] umd: For clarity rename umh_info umd_info Eric W. Biederman
2020-07-02 16:41                                                                       ` [PATCH v3 07/16] umd: Rename umd_info.cmdline umd_info.driver_name Eric W. Biederman
2020-07-02 16:41                                                                       ` [PATCH v3 08/16] umd: Transform fork_usermode_blob into fork_usermode_driver Eric W. Biederman
2020-07-02 16:41                                                                       ` [PATCH v3 09/16] umh: Stop calling do_execve_file Eric W. Biederman
2020-07-02 16:41                                                                       ` [PATCH v3 10/16] exec: Remove do_execve_file Eric W. Biederman
2020-07-08  6:35                                                                         ` Luis Chamberlain
2020-07-08 12:41                                                                           ` Luis Chamberlain
2020-07-08 13:08                                                                             ` Eric W. Biederman
2020-07-08 13:32                                                                               ` Luis Chamberlain
2020-07-12 21:02                                                                         ` Pavel Machek
2020-07-02 16:41                                                                       ` [PATCH v3 11/16] bpfilter: Move bpfilter_umh back into init data Eric W. Biederman
2020-07-02 16:41                                                                       ` [PATCH v3 12/16] umd: Track user space drivers with struct pid Eric W. Biederman
2020-07-02 16:41                                                                       ` [PATCH v3 13/16] exit: Factor thread_group_exited out of pidfd_poll Eric W. Biederman
2020-07-03 20:30                                                                         ` Alexei Starovoitov
2020-07-03 21:37                                                                           ` Eric W. Biederman
2020-07-04  0:03                                                                             ` Alexei Starovoitov
2020-07-04 15:50                                                                             ` Christian Brauner
2020-07-07 17:09                                                                               ` Eric W. Biederman
2020-07-08  0:05                                                                                 ` Daniel Borkmann
2020-07-08  3:50                                                                                   ` Eric W. Biederman
2020-07-04 16:00                                                                         ` Christian Brauner
2020-07-02 16:41                                                                       ` [PATCH v3 14/16] bpfilter: Take advantage of the facilities of struct pid Eric W. Biederman
2020-07-02 16:41                                                                       ` [PATCH v3 15/16] umd: Remove exit_umh Eric W. Biederman
2020-07-02 16:41                                                                       ` [PATCH v3 16/16] umd: Stop using split_argv Eric W. Biederman
2020-07-02 23:51                                                                       ` [PATCH v3 00/16] Make the user mode driver code a better citizen Tetsuo Handa
2020-07-09 22:05                                                                       ` [merged][PATCH " Eric W. Biederman
2020-07-14 19:42                                                                         ` Alexei Starovoitov
2020-07-08  5:20                                                                     ` [PATCH v2 00/15] " Luis Chamberlain
2020-06-26 14:10                                                                 ` [PATCH 00/14] " Greg Kroah-Hartman
2020-06-26 16:40                                                                 ` Alexei Starovoitov
2020-06-26 17:17                                                                   ` Eric W. Biederman
2020-06-26 18:22                                                                     ` Alexei Starovoitov
2020-06-27 11:38                                                                 ` Tetsuo Handa
2020-06-27 12:59                                                                   ` Eric W. Biederman
2020-06-27 13:57                                                                     ` Tetsuo Handa
2020-06-28 19:44                                                                       ` Alexei Starovoitov
2020-06-29  2:20                                                                         ` Tetsuo Handa
2020-06-29 20:19                                                                           ` Eric W. Biederman
2020-06-30  6:28                                                                             ` Tetsuo Handa
2020-06-30 12:32                                                                               ` Eric W. Biederman
2020-06-30 16:48                                                                               ` Alexei Starovoitov
2020-06-30 21:54                                                                                 ` Tetsuo Handa
2020-06-30 21:57                                                                                   ` Alexei Starovoitov
2020-06-30 22:58                                                                                     ` Tetsuo Handa
2020-06-25 12:56                                                 ` [RFC][PATCH] net/bpfilter: Remove this broken and apparently unmantained Stephen Smalley
2020-06-25 13:25                                                   ` Greg Kroah-Hartman
2020-06-25 14:26                                                     ` Stephen Smalley
2020-06-25 14:36                                                       ` Stephen Smalley
2020-06-25 15:21                                                       ` Tetsuo Handa
2020-06-25 16:03                                                         ` Stephen Smalley
2020-06-25 16:06                                                         ` Casey Schaufler
2020-06-26 11:30                                               ` Eric W. Biederman
2020-06-07  5:58             ` Eric W. Biederman
2020-06-07 11:56               ` Eric W. Biederman
2020-06-08 16:35                 ` Alexei Starovoitov
2020-06-08 16:33               ` Alexei Starovoitov
2020-06-06 20:43       ` Matthew Wilcox
2020-06-07 15:51         ` Eric W. Biederman
2020-06-07  1:13       ` Tetsuo Handa

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* Reply using the --to, --cc, and --in-reply-to
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Linux-Fsdevel Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-fsdevel/0 linux-fsdevel/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-fsdevel linux-fsdevel/ https://lore.kernel.org/linux-fsdevel \
		linux-fsdevel@vger.kernel.org
	public-inbox-index linux-fsdevel

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-fsdevel


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git