From: Dmitry Vyukov <dvyukov@google.com>
To: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: Casey Schaufler <casey@schaufler-ca.com>,
Paul Moore <paul@paul-moore.com>,
Stephen Smalley <sds@tycho.nsa.gov>,
syzbot <syzbot+21016130b0580a9de3b5@syzkaller.appspotmail.com>,
tyhicks@canonical.com,
John Johansen <john.johansen@canonical.com>,
James Morris <jmorris@namei.org>,
LKML <linux-kernel@vger.kernel.org>,
linux-security-module@vger.kernel.org,
Serge Hallyn <serge@hallyn.com>,
syzkaller-bugs <syzkaller-bugs@googlegroups.com>,
Jeffrey Vander Stoep <jeffv@google.com>,
SELinux <selinux@tycho.nsa.gov>,
Russell Coker <russell@coker.com.au>,
Laurent Bigonville <bigon@debian.org>,
syzkaller <syzkaller@googlegroups.com>
Subject: Re: WARNING in apparmor_secid_to_secctx
Date: Fri, 1 Feb 2019 11:50:50 +0100 [thread overview]
Message-ID: <CACT4Y+Z036bZfN1-_VaQ5EorwFt_tpPm=RTnrYN5qKV_ebgoFw@mail.gmail.com> (raw)
In-Reply-To: <71e3652b-b222-0c3f-8b48-5980ddcaeb93@i-love.sakura.ne.jp>
On Fri, Feb 1, 2019 at 11:44 AM Tetsuo Handa
<penguin-kernel@i-love.sakura.ne.jp> wrote:
>
> On 2019/02/01 19:09, Dmitry Vyukov wrote:
> > Thanks for the explanations.
> >
> > Here is the change that I've come up with:
> > https://github.com/google/syzkaller/commit/aa53be276dc84aa8b3825b3416542447ff82b41a
>
> You are not going to apply this updated config to upstream kernels now, are you?
> Removing CONFIG_DEFAULT_SECURITY="apparmor" from configs used by upstream kernels
> will cause failing to enable AppArmor (unless security=apparmor is specified).
We do use security=apparmor, see:
https://github.com/google/syzkaller/blob/master/dashboard/config/upstream-apparmor.cmdline
https://github.com/google/syzkaller/blob/master/dashboard/config/upstream-selinux.cmdline
https://github.com/google/syzkaller/blob/master/dashboard/config/upstream-smack.cmdline
> I guess you can apply this updated config to linux-next kernels given that
> you replace
>
> CONFIG_LSM="yama,loadpin,safesetid,integrity,selinux,smack,tomoyo,apparmor"
>
> with
>
> CONFIG_LSM="yama,loadpin,safesetid,integrity,apparmor,selinux,smack,tomoyo"
>
> so that AppArmor is enabled instead of SELinux.
>
> >
> > I've disabled CONFIG_SECURITY_TOMOYO_OMIT_USERSPACE_LOADER (it
> > actually looked like omitting a user-space loader that I don't have is
> > the right thing to do, but okay, it indeed does not with =y).
> >
> > For now I just enabled TOMOYO and SAFESETID.
> > I see the problem with making both linux-next and upstream work. If we
> > use a single config and lsm= cmdline argument, then on upstream all
> > kernels will use the same module (they won't understand lsm=). But if
> > we add security= then it will take precedence over lsm= on linux-next,
> > so we won't get stacked modules.
>
> Right.
>
> >
> > Let's go with (c) because I don't want an additional long-term maintenance cost.
>
> OK.
>
> > If I understand it correctly later we will need to replace:
> > security=selinux
> > security=smack
> > security=apparmor
> >
> > with:
> > lsm=yama,safesetid,integrity,selinux,tomoyo
> > lsm=yama,safesetid,integrity,smack,tomoyo
> > lsm=yama,safesetid,integrity,tomoyo,apparmor
>
> Yes. Thank you.
next prev parent reply other threads:[~2019-02-01 10:51 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-30 2:17 WARNING in apparmor_secid_to_secctx syzbot
2018-08-30 2:21 ` Dmitry Vyukov
2018-08-31 16:03 ` Stephen Smalley
2018-08-31 16:07 ` Paul Moore
2018-08-31 16:16 ` Stephen Smalley
2018-08-31 16:17 ` Stephen Smalley
2018-08-31 22:38 ` Dmitry Vyukov
2018-09-04 12:57 ` Stephen Smalley
2018-09-04 13:16 ` Russell Coker
2018-09-04 14:53 ` Dmitry Vyukov
2018-09-05 17:13 ` Kees Cook
2018-09-04 15:02 ` Dmitry Vyukov
2018-09-04 15:28 ` Stephen Smalley
2018-09-04 15:38 ` Dmitry Vyukov
2018-09-04 17:02 ` Stephen Smalley
2018-09-05 1:21 ` Paul Moore
2018-09-05 11:08 ` Dmitry Vyukov
2018-09-05 17:37 ` Casey Schaufler
2018-09-06 10:59 ` Dmitry Vyukov
2018-09-06 11:19 ` Dmitry Vyukov
2018-09-06 19:35 ` Dmitry Vyukov
2019-01-29 11:32 ` Tetsuo Handa
2019-01-30 14:45 ` Dmitry Vyukov
2019-01-30 16:30 ` Micah Morton
2019-01-31 0:22 ` Tetsuo Handa
2019-02-01 10:09 ` Dmitry Vyukov
2019-02-01 10:11 ` Dmitry Vyukov
2019-02-01 10:43 ` Tetsuo Handa
2019-02-01 10:50 ` Dmitry Vyukov [this message]
2019-02-01 13:09 ` [PATCH] LSM: Allow syzbot to ignore security= parameter Tetsuo Handa
2019-02-04 8:07 ` Dmitry Vyukov
2019-02-06 10:23 ` Tetsuo Handa
2019-02-06 17:03 ` Casey Schaufler
2019-02-07 2:30 ` Tetsuo Handa
2019-02-07 16:24 ` Casey Schaufler
2019-02-08 10:52 ` Tetsuo Handa
2019-02-08 16:23 ` Casey Schaufler
2019-02-09 0:28 ` Tetsuo Handa
2019-02-09 1:40 ` Tetsuo Handa
2019-02-08 21:49 ` Kees Cook
2019-02-08 21:33 ` Kees Cook
2018-08-30 3:43 ` WARNING in apparmor_secid_to_secctx syzbot
2018-09-01 9:18 ` John Johansen
2018-09-02 4:33 ` Dmitry Vyukov
2018-09-02 4:52 ` John Johansen
2018-09-02 5:03 ` Dmitry Vyukov
2018-09-02 5:03 ` syzbot
2018-09-02 5:05 ` Dmitry Vyukov
2018-09-02 5:46 ` syzbot
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