linux-kernel - Re: [PATCH v5] tpm: Return the actual size when receiving an unsupported command

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Message-ID: <20180629113107.GA10894@linux.intel.com>
Date:   Fri, 29 Jun 2018 14:31:07 +0300
From:   Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:     Ricardo Schwarzmeier <Ricardo.Schwarzmeier@...ineon.com>
Cc:     linux-integrity@...r.kernel.org, linux-kernel@...r.kernel.org,
        peterhuewe@....de, jgg@...pe.ca, arnd@...db.de,
        gregkh@...uxfoundation.org
Subject: Re: [PATCH v5] tpm: Return the actual size when receiving an
 unsupported command

On Tue, Jun 26, 2018 at 05:31:45PM +0200, Ricardo Schwarzmeier wrote:
> The userpace expects to read the number of bytes stated in the header.
> Returning the size of the buffer instead would be unexpected.
> Fixes: 095531f891e6 ("tpm: return a TPM_RC_COMMAND_CODE response if command is not implemented")
> 
> Signed-off-by: Ricardo Schwarzmeier <Ricardo.Schwarzmeier@...ineon.com>

Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>

/Jarkko