linux-kernel - Re: [PATCH v7 3/8] IMA: define a hook to measure kernel integrity critical data

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Message-ID: <b65f2a10-037b-0fb7-fe88-5cc8482faedc@linux.microsoft.com>
Date:   Fri, 11 Dec 2020 09:28:11 -0800
From:   Tushar Sugandhi <tusharsu@...ux.microsoft.com>
To:     Tyler Hicks <tyhicks@...ux.microsoft.com>
Cc:     zohar@...ux.ibm.com, stephen.smalley.work@...il.com,
        casey@...aufler-ca.com, agk@...hat.com, snitzer@...hat.com,
        gmazyland@...il.com, paul@...l-moore.com, sashal@...nel.org,
        jmorris@...ei.org, nramas@...ux.microsoft.com,
        linux-integrity@...r.kernel.org, selinux@...r.kernel.org,
        linux-security-module@...r.kernel.org,
        linux-kernel@...r.kernel.org, dm-devel@...hat.com
Subject: Re: [PATCH v7 3/8] IMA: define a hook to measure kernel integrity
 critical data

<snip>

>> + */
>> +void ima_measure_critical_data(const char *event_name,
>> +			       const void *buf, int buf_len,
>> +			       bool measure_buf_hash)
>> +{
>> +	if (!event_name || !buf || !buf_len) {
>> +		pr_err("Invalid arguments passed to %s().\n", __func__);
> 
> This is a problem for the developer making use of the
> ima_measure_critical_data() API and shouldn't be logged, IMO, because a
> user/admin can do nothing about it. I think the error message should be
> dropped.
> 
Thanks Tyler.
Will drop the message.