[PATCH v4 2/2] selftests: tpm2: Reset the dictionary attack lock

From: Stefan Berger
Date: Sat Nov 27 2021 - 23:13:14 EST


From: Stefan Berger <stefanb@xxxxxxxxxxxxx>

Reset the dictionary attack lock to avoid the following types of test
failures after running the test 2 times:

======================================================================
ERROR: test_unseal_with_wrong_policy (tpm2_tests.SmokeTest)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/root/linux-ima-namespaces/tools/testing/selftests/tpm2/tpm2_tests.py", line 105, in test_unseal_with_wrong_policy
blob = self.client.seal(self.root_key, data, auth, policy_dig)
File "/root/linux-ima-namespaces/tools/testing/selftests/tpm2/tpm2.py", line 620, in seal
rsp = self.send_cmd(cmd)
File "/root/linux-ima-namespaces/tools/testing/selftests/tpm2/tpm2.py", line 397, in send_cmd
raise ProtocolError(cc, rc)
tpm2.ProtocolError: TPM_RC_LOCKOUT: cc=0x00000153, rc=0x00000921

Signed-off-by: Stefan Berger <stefanb@xxxxxxxxxxxxx>
---
tools/testing/selftests/tpm2/tpm2_tests.py | 2 ++
1 file changed, 2 insertions(+)

diff --git a/tools/testing/selftests/tpm2/tpm2_tests.py b/tools/testing/selftests/tpm2/tpm2_tests.py
index e63a37819978..ad6f54c01adf 100644
--- a/tools/testing/selftests/tpm2/tpm2_tests.py
+++ b/tools/testing/selftests/tpm2/tpm2_tests.py
@@ -139,6 +139,8 @@ class SmokeTest(unittest.TestCase):
except:
self.client.flush_context(handle)
raise
+ finally:
+ self.client.reset_da_lock()

self.assertEqual(rc, tpm2.TPM2_RC_POLICY_FAIL)

--
2.31.1