linux-kernel - Re: [PATCH] security: Fix IMA Kconfig for dependencies on ARM64

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Date:   Sun, 11 Mar 2018 18:06:41 -0400
From:   Mimi Zohar <zohar@...ux.vnet.ibm.com>
To:     Jiandi An <anjiandi@...eaurora.org>, dmitry.kasatkin@...il.com,
        jmorris@...ei.org, serge@...lyn.com
Cc:     linux-integrity@...r.kernel.org,
        linux-security-module@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        linux-integrity <linux-integrity@...r.kernel.org>
Subject: Re: [PATCH] security: Fix IMA Kconfig for dependencies on ARM64

On Tue, 2018-03-06 at 23:26 -0600, Jiandi An wrote:
> TPM_CRB driver is the TPM support for ARM64.  If it
> is built as module, TPM chip is registered after IMA
> init.  tpm_pcr_read() in IMA driver would fail and
> display the following message even though eventually
> there is TPM chip on the system:
> 
> ima: No TPM chip found, activating TPM-bypass! (rc=-19)
> 
> Fix IMA Kconfig to select TPM_CRB so TPM_CRB driver is
> built in kernel and initializes before IMA driver.
> 
> Signed-off-by: Jiandi An <anjiandi@...eaurora.org>

Thanks, this patch has been applied.

Mimi

> ---
>  security/integrity/ima/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/security/integrity/ima/Kconfig b/security/integrity/ima/Kconfig
> index 35ef693..6a8f677 100644
> --- a/security/integrity/ima/Kconfig
> +++ b/security/integrity/ima/Kconfig
> @@ -10,6 +10,7 @@ config IMA
>  	select CRYPTO_HASH_INFO
>  	select TCG_TPM if HAS_IOMEM && !UML
>  	select TCG_TIS if TCG_TPM && X86
> +	select TCG_CRB if TCG_TPM && ACPI
>  	select TCG_IBMVTPM if TCG_TPM && PPC_PSERIES
>  	help
>  	  The Trusted Computing Group(TCG) runtime Integrity