Thread (30 messages) 30 messages, 5 authors, 2018-03-16
STALE3118d

[PATCH] security: Fix IMA Kconfig for dependencies on ARM64

From: Jiandi An <hidden>
Date: 2018-03-07 05:26:42
Also in: linux-integrity, lkml
Subsystem: extended verification module (evm), integrity measurement architecture (ima), security subsystem, the rest · Maintainers: Mimi Zohar, Roberto Sassu, Dmitry Kasatkin, Paul Moore, James Morris, "Serge E. Hallyn", Linus Torvalds

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 <redacted>
---
 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
-- 
Jiandi An
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.

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