From: Dave Jones <davej@codemonkey.org.uk>
To: Paul Moore <paul@paul-moore.com>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>,
Eric Paris <eparis@redhat.com>,
linux-audit@redhat.com
Subject: Re: ntp audit spew.
Date: Mon, 23 Sep 2019 15:49:01 -0400 [thread overview]
Message-ID: <20190923194901.GA2787@codemonkey.org.uk> (raw)
In-Reply-To: <CAHC9VhTh+cD5pkb8JAHnG1wa9-UgivSb7+-yjjYaD+6vhyYKjA@mail.gmail.com>
On Mon, Sep 23, 2019 at 02:57:08PM -0400, Paul Moore wrote:
> On Mon, Sep 23, 2019 at 12:58 PM Dave Jones <davej@codemonkey.org.uk> wrote:
> > On Mon, Sep 23, 2019 at 12:14:14PM -0400, Paul Moore wrote:
> > > On Mon, Sep 23, 2019 at 11:50 AM Dave Jones <davej@codemonkey.org.uk> wrote:
> > > >
> > > > I have some hosts that are constantly spewing audit messages like so:
> > > >
> > > > [46897.591182] audit: type=1333 audit(1569250288.663:220): op=offset old=2543677901372 new=2980866217213
> > > > [46897.591184] audit: type=1333 audit(1569250288.663:221): op=freq old=-2443166611284 new=-2436281764244
> > > > [48850.604005] audit: type=1333 audit(1569252241.675:222): op=offset old=1850302393317 new=3190241577926
> > > > [48850.604008] audit: type=1333 audit(1569252241.675:223): op=freq old=-2436281764244 new=-2413071187316
> > > > [49926.567270] audit: type=1333 audit(1569253317.638:224): op=offset old=2453141035832 new=2372389610455
> > > > [49926.567273] audit: type=1333 audit(1569253317.638:225): op=freq old=-2413071187316 new=-2403561671476
> > > >
> > > > This gets emitted every time ntp makes an adjustment, which is apparently very frequent on some hosts.
> > > >
> > > >
> > > > Audit isn't even enabled on these machines.
> > > >
> > > > # auditctl -l
> > > > No rules
> > >
> > > What happens when you run 'auditctl -a never,task'? That *should*
> > > silence those messages as the audit_ntp_log() function has the
> > > requisite audit_dummy_context() check.
> >
> > They still get emitted.
> >
> > > FWIW, this is the distro
> > > default for many (most? all?) distros; for example, check
> > > /etc/audit/audit.rules on a stock Fedora system.
> >
> > As these machines aren't using audit, they aren't running auditd either.
> > Essentially: nothing enables audit, but the kernel side continues to log
> > ntp regardless (no other audit messages seem to do this).
>
> What does your kernel command line look like? Do you have "audit=1"
> somewhere in there?
nope.
ro root=LABEL=/ biosdevname=0 net.ifnames=0 fsck.repair=yes systemd.gpt_auto=0 pcie_pme=nomsi ipv6.autoconf=0 erst_disable crashkernel=128M console=tty0 console=ttyS1,57600 intel_iommu=tboot_noforce
Dave
next prev parent reply other threads:[~2019-09-23 19:49 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-23 15:50 ntp audit spew Dave Jones
2019-09-23 16:14 ` Paul Moore
2019-09-23 16:58 ` Dave Jones
2019-09-23 18:57 ` Paul Moore
2019-09-23 19:49 ` Dave Jones [this message]
2019-09-23 19:49 ` Eric Paris
2019-09-24 2:39 ` Paul Moore
2019-09-24 13:30 ` Steve Grubb
2019-09-23 21:00 ` Richard Guy Briggs
2019-09-24 3:01 ` Paul Moore
2019-09-24 13:50 ` Richard Guy Briggs
2019-09-24 17:05 ` Paul Moore
2019-09-26 15:50 ` Paul Moore
2019-09-24 13:19 ` Steve Grubb
2019-09-24 17:01 ` Paul Moore
2019-10-31 16:39 ` [PATCH] audit: set context->dummy even when audit is off Chris Mason
2019-10-31 16:39 ` Chris Mason
2019-10-31 23:27 ` Paul Moore
2019-11-01 13:24 ` Chris Mason
2019-11-01 14:16 ` Steve Grubb
2019-11-01 14:26 ` Lenny Bruzenak
2019-11-01 14:49 ` Steve Grubb
2019-11-01 14:58 ` Lenny Bruzenak
2019-11-01 15:55 ` Chris Mason
2019-11-05 0:15 ` Paul Moore
2019-11-05 0:39 ` Chris Mason
2019-11-05 0:45 ` Paul Moore
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