linux-kernel - [PATCH] tpm: selftests: cleanup after unseal with wrong policy test

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Date:   Tue, 10 Dec 2019 13:55:20 -0800
From:   Tadeusz Struk <tadeusz.struk@...el.com>
To:     jarkko.sakkinen@...ux.intel.com
Cc:     linux-integrity@...r.kernel.org, linux-kernel@...r.kernel.org,
        tadeusz.struk@...el.com
Subject: [PATCH] tpm: selftests: cleanup after unseal with wrong policy test

Unseal with wrong policy tests affects DA lockout and eventually
causes to fail with:
"ProtocolError: TPM_RC_LOCKOUT: cc=0x00000153, rc=0x00000921",
when the test runs multiple times. Send tpm clear command
after the test to reset the DA counters.

Signed-off-by: Tadeusz Struk <tadeusz.struk@...el.com>
---
 tools/testing/selftests/tpm2/test_smoke.sh |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/testing/selftests/tpm2/test_smoke.sh b/tools/testing/selftests/tpm2/test_smoke.sh
index 80521d46220c..22ae4183f2b9 100755
--- a/tools/testing/selftests/tpm2/test_smoke.sh
+++ b/tools/testing/selftests/tpm2/test_smoke.sh
@@ -2,3 +2,8 @@
 # SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
 
 python -m unittest -v tpm2_tests.SmokeTest
+
+CLEAR_CMD=$(which tpm2_clear)
+if [ -n $CLEAR_CMD ]; then
+	tpm2_clear -T device
+fi