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From: Mimi Zohar <zohar@linux.ibm.com>
To: Tushar Sugandhi <tusharsu@linux.microsoft.com>,
	joe@perches.com, skhan@linuxfoundation.org,
	linux-integrity@vger.kernel.org
Cc: sashal@kernel.org, nramas@linux.microsoft.com,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 2/3] IMA: Add log statements for failure conditions.
Date: Wed, 12 Feb 2020 19:21:51 -0500
Message-ID: <1581553311.8515.96.camel@linux.ibm.com> (raw)
In-Reply-To: <ce89d382-8e8b-71d0-5271-4db83d324f94@linux.microsoft.com>

On Wed, 2020-02-12 at 14:30 -0800, Tushar Sugandhi wrote:
> 
> On 2020-02-12 6:47 a.m., Mimi Zohar wrote:
> > Hi Tushar,
> > 
> > Please remove the period at the end of the  Subject line.
> Thanks. I will fix it in the next iteration.
> > 
> > On Tue, 2020-02-11 at 15:14 -0800, Tushar Sugandhi wrote:
> >> process_buffer_measurement() does not have log messages for failure
> >> conditions.
> >>
> >> This change adds a log statement in the above function.
> > 
> > I agree some form of notification needs to be added.  The question is
> > whether the failure should be audited or a kernel message emitted.
> >   IMA emits audit messages (integrity_audit_msg) for a number of
> > reasons - on failure to calculate a file hash, invalid policy rules,
> > failure to communicate with the TPM, signature verification errors,
> > etc.
> I believe both IMA audit messages and kernel message should be emitted -
> for better discoverability and diagnosability.

Like file measurement failures, failure to measure a key or the boot
command line should be audited as well.  For debugging purposes, you
could make this message pr_devel.

Mimi


  reply index

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-11 23:14 [PATCH v3 0/3] IMA: improve log messages in IMA Tushar Sugandhi
2020-02-11 23:14 ` [PATCH v3 1/3] IMA: Update KBUILD_MODNAME for IMA files to ima Tushar Sugandhi
2020-02-12 14:49   ` Mimi Zohar
2020-02-12 22:25     ` Tushar Sugandhi
2020-02-11 23:14 ` [PATCH v3 2/3] IMA: Add log statements for failure conditions Tushar Sugandhi
2020-02-12 14:47   ` Mimi Zohar
2020-02-12 22:30     ` Tushar Sugandhi
2020-02-13  0:21       ` Mimi Zohar [this message]
2020-02-13 21:01         ` Tushar Sugandhi
2020-02-11 23:14 ` [PATCH v3 3/3] IMA: Add module name and base name prefix to log Tushar Sugandhi
2020-02-12 14:29   ` Mimi Zohar
2020-02-12 15:26     ` James Bottomley
2020-02-12 15:47       ` Joe Perches
2020-02-12 22:52       ` Shuah Khan
2020-02-13  0:38         ` Mimi Zohar
2020-02-13  0:56           ` Tushar Sugandhi
2020-02-12 15:23 ` [PATCH v3 0/3] IMA: improve log messages in IMA Mimi Zohar
2020-02-12 22:22   ` Tushar Sugandhi

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