diff --git a/graphics/common/aidl/aidl_api/android.hardware.graphics.common/current/android/hardware/graphics/common/HardwareBufferDescription.aidl b/graphics/common/aidl/aidl_api/android.hardware.graphics.common/current/android/hardware/graphics/common/HardwareBufferDescription.aidl
index 8b12169..232e023 100644
--- a/graphics/common/aidl/aidl_api/android.hardware.graphics.common/current/android/hardware/graphics/common/HardwareBufferDescription.aidl
+++ b/graphics/common/aidl/aidl_api/android.hardware.graphics.common/current/android/hardware/graphics/common/HardwareBufferDescription.aidl
@@ -21,7 +21,7 @@
   int width;
   int height;
   int layers;
-  android.hardware.graphics.common.PixelFormat format;
-  android.hardware.graphics.common.BufferUsage usage;
+  android.hardware.graphics.common.PixelFormat format = android.hardware.graphics.common.PixelFormat.UNSPECIFIED;
+  android.hardware.graphics.common.BufferUsage usage = android.hardware.graphics.common.BufferUsage.CPU_READ_NEVER;
   int stride;
 }
diff --git a/graphics/common/aidl/android/hardware/graphics/common/HardwareBufferDescription.aidl b/graphics/common/aidl/android/hardware/graphics/common/HardwareBufferDescription.aidl
index e1e3492..078c512 100644
--- a/graphics/common/aidl/android/hardware/graphics/common/HardwareBufferDescription.aidl
+++ b/graphics/common/aidl/android/hardware/graphics/common/HardwareBufferDescription.aidl
@@ -29,7 +29,7 @@
     int width;
     int height;
     int layers;
-    PixelFormat format;
-    BufferUsage usage;
+    PixelFormat format = PixelFormat.UNSPECIFIED;
+    BufferUsage usage = BufferUsage.CPU_READ_NEVER;
     int stride;
 }
diff --git a/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/IIdentityCredential.aidl b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/IIdentityCredential.aidl
index a097895..3224e4b 100644
--- a/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/IIdentityCredential.aidl
+++ b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/IIdentityCredential.aidl
@@ -43,8 +43,8 @@
   void startRetrieval(in android.hardware.identity.SecureAccessControlProfile[] accessControlProfiles, in android.hardware.keymaster.HardwareAuthToken authToken, in byte[] itemsRequest, in byte[] signingKeyBlob, in byte[] sessionTranscript, in byte[] readerSignature, in int[] requestCounts);
   void startRetrieveEntryValue(in @utf8InCpp String nameSpace, in @utf8InCpp String name, in int entrySize, in int[] accessControlProfileIds);
   byte[] retrieveEntryValue(in byte[] encryptedContent);
-  void finishRetrieval(out byte[] mac, out byte[] deviceNameSpaces);
-  android.hardware.identity.Certificate generateSigningKeyPair(out byte[] signingKeyBlob);
+  @SuppressWarnings(value={"out-array"}) void finishRetrieval(out byte[] mac, out byte[] deviceNameSpaces);
+  @SuppressWarnings(value={"out-array"}) android.hardware.identity.Certificate generateSigningKeyPair(out byte[] signingKeyBlob);
   void setRequestedNamespaces(in android.hardware.identity.RequestNamespace[] requestNamespaces);
   void setVerificationToken(in android.hardware.keymaster.VerificationToken verificationToken);
   byte[] deleteCredentialWithChallenge(in byte[] challenge);
diff --git a/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/IWritableIdentityCredential.aidl b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/IWritableIdentityCredential.aidl
index a713462..19a29ec 100644
--- a/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/IWritableIdentityCredential.aidl
+++ b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/IWritableIdentityCredential.aidl
@@ -38,6 +38,6 @@
   android.hardware.identity.SecureAccessControlProfile addAccessControlProfile(in int id, in android.hardware.identity.Certificate readerCertificate, in boolean userAuthenticationRequired, in long timeoutMillis, in long secureUserId);
   void beginAddEntry(in int[] accessControlProfileIds, in @utf8InCpp String nameSpace, in @utf8InCpp String name, in int entrySize);
   byte[] addEntryValue(in byte[] content);
-  void finishAddingEntries(out byte[] credentialData, out byte[] proofOfProvisioningSignature);
+  @SuppressWarnings(value={"out-array"}) void finishAddingEntries(out byte[] credentialData, out byte[] proofOfProvisioningSignature);
   void setExpectedProofOfProvisioningSize(in int expectedProofOfProvisioningSize);
 }
diff --git a/identity/aidl/android/hardware/identity/IIdentityCredential.aidl b/identity/aidl/android/hardware/identity/IIdentityCredential.aidl
index d23f88c..8ae293b 100644
--- a/identity/aidl/android/hardware/identity/IIdentityCredential.aidl
+++ b/identity/aidl/android/hardware/identity/IIdentityCredential.aidl
@@ -324,6 +324,7 @@
      *
      * @param out deviceNameSpaces the bytes of DeviceNameSpaces.
      */
+    @SuppressWarnings(value={"out-array"})
     void finishRetrieval(out byte[] mac, out byte[] deviceNameSpaces);
 
     /**
@@ -376,6 +377,7 @@
      *
      * @return an X.509 certificate for the new signing key, signed by the credential key.
      */
+    @SuppressWarnings(value={"out-array"})
     Certificate generateSigningKeyPair(out byte[] signingKeyBlob);
 
     /**
diff --git a/identity/aidl/android/hardware/identity/IWritableIdentityCredential.aidl b/identity/aidl/android/hardware/identity/IWritableIdentityCredential.aidl
index 5f878ee..22bcf61 100644
--- a/identity/aidl/android/hardware/identity/IWritableIdentityCredential.aidl
+++ b/identity/aidl/android/hardware/identity/IWritableIdentityCredential.aidl
@@ -320,6 +320,7 @@
      *              "accessControlProfiles" : [ * uint ],
      *          }
      */
+    @SuppressWarnings(value={"out-array"})
     void finishAddingEntries(out byte[] credentialData,
         out byte[] proofOfProvisioningSignature);
 
diff --git a/keymaster/aidl/aidl_api/android.hardware.keymaster/current/android/hardware/keymaster/HardwareAuthToken.aidl b/keymaster/aidl/aidl_api/android.hardware.keymaster/current/android/hardware/keymaster/HardwareAuthToken.aidl
index db1df2b..4f21cba 100644
--- a/keymaster/aidl/aidl_api/android.hardware.keymaster/current/android/hardware/keymaster/HardwareAuthToken.aidl
+++ b/keymaster/aidl/aidl_api/android.hardware.keymaster/current/android/hardware/keymaster/HardwareAuthToken.aidl
@@ -21,7 +21,7 @@
   long challenge;
   long userId;
   long authenticatorId;
-  android.hardware.keymaster.HardwareAuthenticatorType authenticatorType;
+  android.hardware.keymaster.HardwareAuthenticatorType authenticatorType = android.hardware.keymaster.HardwareAuthenticatorType.NONE;
   android.hardware.keymaster.Timestamp timestamp;
   byte[] mac;
 }
diff --git a/keymaster/aidl/aidl_api/android.hardware.keymaster/current/android/hardware/keymaster/VerificationToken.aidl b/keymaster/aidl/aidl_api/android.hardware.keymaster/current/android/hardware/keymaster/VerificationToken.aidl
index 0633765..b116dac 100644
--- a/keymaster/aidl/aidl_api/android.hardware.keymaster/current/android/hardware/keymaster/VerificationToken.aidl
+++ b/keymaster/aidl/aidl_api/android.hardware.keymaster/current/android/hardware/keymaster/VerificationToken.aidl
@@ -20,6 +20,6 @@
 parcelable VerificationToken {
   long challenge;
   android.hardware.keymaster.Timestamp timestamp;
-  android.hardware.keymaster.SecurityLevel securityLevel;
+  android.hardware.keymaster.SecurityLevel securityLevel = android.hardware.keymaster.SecurityLevel.SOFTWARE;
   byte[] mac;
 }
diff --git a/keymaster/aidl/android/hardware/keymaster/HardwareAuthToken.aidl b/keymaster/aidl/android/hardware/keymaster/HardwareAuthToken.aidl
index 58602aa..99b036a 100644
--- a/keymaster/aidl/android/hardware/keymaster/HardwareAuthToken.aidl
+++ b/keymaster/aidl/android/hardware/keymaster/HardwareAuthToken.aidl
@@ -55,7 +55,7 @@
      * authenticatorType describes the type of authentication that took place, e.g. password or
      * fingerprint.
      */
-    HardwareAuthenticatorType authenticatorType;
+    HardwareAuthenticatorType authenticatorType = HardwareAuthenticatorType.NONE;
 
     /**
      * timestamp indicates when the user authentication took place, in milliseconds since some
diff --git a/keymaster/aidl/android/hardware/keymaster/VerificationToken.aidl b/keymaster/aidl/android/hardware/keymaster/VerificationToken.aidl
index f053254..5efd937 100644
--- a/keymaster/aidl/android/hardware/keymaster/VerificationToken.aidl
+++ b/keymaster/aidl/android/hardware/keymaster/VerificationToken.aidl
@@ -43,7 +43,7 @@
     /**
      * SecurityLevel of the secure environment that generated the token.
      */
-    SecurityLevel securityLevel;
+    SecurityLevel securityLevel = SecurityLevel.SOFTWARE;
 
     /**
      * 32-byte HMAC-SHA256 of the above values, computed as:
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/Operand.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/Operand.aidl
index 5a9f4ff..1d9bdd8 100644
--- a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/Operand.aidl
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/Operand.aidl
@@ -34,11 +34,11 @@
 package android.hardware.neuralnetworks;
 @VintfStability
 parcelable Operand {
-  android.hardware.neuralnetworks.OperandType type;
+  android.hardware.neuralnetworks.OperandType type = android.hardware.neuralnetworks.OperandType.FLOAT32;
   int[] dimensions;
   float scale;
   int zeroPoint;
-  android.hardware.neuralnetworks.OperandLifeTime lifetime;
+  android.hardware.neuralnetworks.OperandLifeTime lifetime = android.hardware.neuralnetworks.OperandLifeTime.TEMPORARY_VARIABLE;
   android.hardware.neuralnetworks.DataLocation location;
   @nullable android.hardware.neuralnetworks.OperandExtraParams extraParams;
 }
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/OperandPerformance.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/OperandPerformance.aidl
index de93d8b..ebb361b 100644
--- a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/OperandPerformance.aidl
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/OperandPerformance.aidl
@@ -34,6 +34,6 @@
 package android.hardware.neuralnetworks;
 @VintfStability
 parcelable OperandPerformance {
-  android.hardware.neuralnetworks.OperandType type;
+  android.hardware.neuralnetworks.OperandType type = android.hardware.neuralnetworks.OperandType.FLOAT32;
   android.hardware.neuralnetworks.PerformanceInfo info;
 }
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/Operation.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/Operation.aidl
index 33fcd60..a4a3fbe 100644
--- a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/Operation.aidl
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/Operation.aidl
@@ -34,7 +34,7 @@
 package android.hardware.neuralnetworks;
 @VintfStability
 parcelable Operation {
-  android.hardware.neuralnetworks.OperationType type;
+  android.hardware.neuralnetworks.OperationType type = android.hardware.neuralnetworks.OperationType.ADD;
   int[] inputs;
   int[] outputs;
 }
diff --git a/neuralnetworks/aidl/android/hardware/neuralnetworks/Operand.aidl b/neuralnetworks/aidl/android/hardware/neuralnetworks/Operand.aidl
index 4d2260f..998e06d 100644
--- a/neuralnetworks/aidl/android/hardware/neuralnetworks/Operand.aidl
+++ b/neuralnetworks/aidl/android/hardware/neuralnetworks/Operand.aidl
@@ -33,7 +33,7 @@
      * {@link IDevice::OPERAND_TYPE_BASE_MAX} is possible and should be interpreted as an extension
      * type according to {@link Model::extensionNameToPrefix}.
      */
-    OperandType type;
+    OperandType type = OperandType.FLOAT32;
     /**
      * Dimensions of the operand.
      *
@@ -86,7 +86,7 @@
     /**
      * How the operand is used.
      */
-    OperandLifeTime lifetime;
+    OperandLifeTime lifetime = OperandLifeTime.TEMPORARY_VARIABLE;
     /**
      * Where to find the data for this operand.
      * If the lifetime is TEMPORARY_VARIABLE, SUBGRAPH_INPUT, SUBGRAPH_OUTPUT, or NO_VALUE:
diff --git a/neuralnetworks/aidl/android/hardware/neuralnetworks/OperandPerformance.aidl b/neuralnetworks/aidl/android/hardware/neuralnetworks/OperandPerformance.aidl
index 7fd86f9..7f53967 100644
--- a/neuralnetworks/aidl/android/hardware/neuralnetworks/OperandPerformance.aidl
+++ b/neuralnetworks/aidl/android/hardware/neuralnetworks/OperandPerformance.aidl
@@ -25,6 +25,6 @@
  */
 @VintfStability
 parcelable OperandPerformance {
-    OperandType type;
+    OperandType type = OperandType.FLOAT32;
     PerformanceInfo info;
 }
diff --git a/neuralnetworks/aidl/android/hardware/neuralnetworks/Operation.aidl b/neuralnetworks/aidl/android/hardware/neuralnetworks/Operation.aidl
index 0c6032f..366d9a4 100644
--- a/neuralnetworks/aidl/android/hardware/neuralnetworks/Operation.aidl
+++ b/neuralnetworks/aidl/android/hardware/neuralnetworks/Operation.aidl
@@ -30,7 +30,7 @@
      * {@link IDevice::OPERATION_TYPE_BASE_MAX} is possible and should be interpreted as an
      * extension type according to {@link Model::extensionNameToPrefix}.
      */
-    OperationType type;
+    OperationType type = OperationType.ADD;
     /**
      * Describes the table that contains the indexes of the inputs of the operation. The offset is
      * the index in the operandIndexes table.
diff --git a/security/keymint/aidl/android/hardware/security/keymint/IKeyMintDevice.aidl b/security/keymint/aidl/android/hardware/security/keymint/IKeyMintDevice.aidl
index 455df4e..a3260f5 100644
--- a/security/keymint/aidl/android/hardware/security/keymint/IKeyMintDevice.aidl
+++ b/security/keymint/aidl/android/hardware/security/keymint/IKeyMintDevice.aidl
@@ -322,6 +322,10 @@
      *        return ErrorCode::INCOMPATIBLE_PURPOSE.  If the provided AttestationKey has an empty
      *        issuer subject name, the IKeyMintDevice must return ErrorCode::INVALID_ARGUMENT.
      *
+     *        If `attestationKey` is null and `keyParams` contains Tag::ATTESTATION_CHALLENGE but
+     *        the KeyMint implementation does not have factory-provisioned attestation keys, it must
+     *        return ErrorCode::ATTESTATION_KEYS_NOT_PROVISIONED.
+     *
      * @return The result of key creation.  See KeyCreationResult.aidl.
      */
     KeyCreationResult generateKey(
@@ -361,6 +365,10 @@
      *        return ErrorCode::INCOMPATIBLE_PURPOSE.  If the provided AttestationKey has an empty
      *        issuer subject name, the IKeyMintDevice must return ErrorCode::INVALID_ARGUMENT.
      *
+     *        If `attestationKey` is null and `keyParams` contains Tag::ATTESTATION_CHALLENGE but
+     *        the KeyMint implementation does not have factory-provisioned attestation keys, it must
+     *        return ErrorCode::ATTESTATION_KEYS_NOT_PROVISIONED.
+     *
      * @return The result of key creation.  See KeyCreationResult.aidl.
      */
     KeyCreationResult importKey(in KeyParameter[] keyParams, in KeyFormat keyFormat,
diff --git a/security/keymint/aidl/android/hardware/security/keymint/KeyCreationResult.aidl b/security/keymint/aidl/android/hardware/security/keymint/KeyCreationResult.aidl
index c2e21b6..972a6a5 100644
--- a/security/keymint/aidl/android/hardware/security/keymint/KeyCreationResult.aidl
+++ b/security/keymint/aidl/android/hardware/security/keymint/KeyCreationResult.aidl
@@ -66,7 +66,8 @@
      *     provisioned attestation key, and the full certificate chain for that factory-provisioned
      *     attestation key.  Tag::ATTESTATION_APPLICATION_ID must also be provided when the
      *     ATTESTATION_CHALLENGE is provided, otherwise ATTESTATION_APPLICATION_ID_MISSING will be
-     *     returned.
+     *     returned.  KeyMint implementations are not required to support factory-provisioned
+     *     attestation keys.
      *
      * 2.  Asymmetric key attestation with caller-provided key.  If Tag::ATTESTATION_CHALLENGE is
      *     provided and the `attestationKey` parameter on the generat/import call is non-null and
@@ -90,6 +91,110 @@
      * 5.  Symmetric key.  If the generated/imported key is symmetric, the certificate chain must
      *     return empty, any Tag::ATTESTATION_CHALLENGE or Tag::ATTESTATION_APPLICATION_ID inputs,
      *     if provided, are ignored.
+     *
+     * In all cases except the symmetric key, the contents of certificate chain must be DER-encoded
+     * X.509 certificates ordered such that each certificate is signed by the subsequent one, up to
+     * the root which must be self-signed (or contain a fake signature in the case of case 4 above).
+     * The first certificate in the chain signs the public key info of the newly-generated or
+     * newly-imported key pair.  In the attestation cases (1 and 2 above), the first certificate
+     * must also satisfy some other requirements:
+     *
+     * o It must have the serial number provided in Tag::CERTIFICATE_SERIAL, or default to 1 if the
+     *   tag is not provided.
+     *
+     * o It must have the subject provided in Tag::CERTIFICATE_SUBJECT, or default to CN="Android
+     *   Keystore Key", if the tag is not provided.
+     *
+     * o It must contain the notBefore and notAfter date-times specified in
+     *   Tag::CERTIFICATE_NOT_BEFORE and Tag::CERTIFICATE_NOT_AFTER, respectively.
+     *
+     * o It must contain a Key Usage extension with:
+     *
+     *    - the digitalSignature bit set iff the attested key has KeyPurpose::SIGN,
+     *    - the dataEncipherment bit set iff the attested key has KeyPurpose::DECRYPT,
+     *    - the keyEncipherment bit set iff the attested key has KeyPurpose::WRAP_KEY,
+     *    - the keyAgreement bit set iff the attested key has KeyPurpose::AGREE_KEY, and
+     *    - the keyCertSignBit set iff the attested key has KeyPurpose::ATTEST_KEY.
+     *
+     * o it must contain a KeyDescription attestation extension with OID 1.3.6.1.4.1.11129.2.1.17.
+     *
+     * The KeyDescription content is defined by the following ASN.1 schema, which is mostly a
+     * straightforward translation of the KeyMint tag/value parameter lists to ASN.1.
+     *
+     * KeyDescription ::= SEQUENCE {
+     *     attestationVersion         INTEGER, # Value 100
+     *     attestationSecurityLevel   SecurityLevel, # See below
+     *     keyMintVersion             INTEGER, # Value 100
+     *     keymintSecurityLevel       SecurityLevel, # See below
+     *     attestationChallenge       OCTET_STRING, # Tag::ATTESTATION_CHALLENGE from attestParams
+     *     uniqueId                   OCTET_STRING, # Empty unless key has Tag::INCLUDE_UNIQUE_ID
+     *     softwareEnforced           AuthorizationList, # See below
+     *     hardwareEnforced           AuthorizationList, # See below
+     * }
+     *
+     * SecurityLevel ::= ENUMERATED {
+     *     Software                   (0),
+     *     TrustedEnvironment         (1),
+     *     StrongBox                  (2),
+     * }
+     *
+     * RootOfTrust ::= SEQUENCE {
+     *     verifiedBootKey            OCTET_STRING,
+     *     deviceLocked               BOOLEAN,
+     *     verifiedBootState          VerifiedBootState,
+     *     # verifiedBootHash must contain 32-byte value that represents the state of all binaries
+     *     # or other components validated by verified boot.  Updating any verified binary or
+     *     # component must cause this value to change.
+     *     verifiedBootHash           OCTET_STRING,
+     * }
+     *
+     * VerifiedBootState ::= ENUMERATED {
+     *     Verified                   (0),
+     *     SelfSigned                 (1),
+     *     Unverified                 (2),
+     *     Failed                     (3),
+     * }
+     *
+     * AuthorizationList ::= SEQUENCE {
+     *     purpose                    [1] EXPLICIT SET OF INTEGER OPTIONAL,
+     *     algorithm                  [2] EXPLICIT INTEGER OPTIONAL,
+     *     keySize                    [3] EXPLICIT INTEGER OPTIONAL,
+     *     blockMode                  [4] EXPLICIT SET OF INTEGER OPTIONAL,
+     *     digest                     [5] EXPLICIT SET OF INTEGER OPTIONAL,
+     *     padding                    [6] EXPLICIT SET OF INTEGER OPTIONAL,
+     *     callerNonce                [7] EXPLICIT NULL OPTIONAL,
+     *     minMacLength               [8] EXPLICIT INTEGER OPTIONAL,
+     *     ecCurve                    [10] EXPLICIT INTEGER OPTIONAL,
+     *     rsaPublicExponent          [200] EXPLICIT INTEGER OPTIONAL,
+     *     rollbackResistance         [303] EXPLICIT NULL OPTIONAL,
+     *     activeDateTime             [400] EXPLICIT INTEGER OPTIONAL,
+     *     originationExpireDateTime  [401] EXPLICIT INTEGER OPTIONAL,
+     *     usageExpireDateTime        [402] EXPLICIT INTEGER OPTIONAL,
+     *     userSecureId               [502] EXPLICIT INTEGER OPTIONAL,
+     *     noAuthRequired             [503] EXPLICIT NULL OPTIONAL,
+     *     userAuthType               [504] EXPLICIT INTEGER OPTIONAL,
+     *     authTimeout                [505] EXPLICIT INTEGER OPTIONAL,
+     *     allowWhileOnBody           [506] EXPLICIT NULL OPTIONAL,
+     *     trustedUserPresenceReq     [507] EXPLICIT NULL OPTIONAL,
+     *     trustedConfirmationReq     [508] EXPLICIT NULL OPTIONAL,
+     *     unlockedDeviceReq          [509] EXPLICIT NULL OPTIONAL,
+     *     creationDateTime           [701] EXPLICIT INTEGER OPTIONAL,
+     *     origin                     [702] EXPLICIT INTEGER OPTIONAL,
+     *     rootOfTrust                [704] EXPLICIT RootOfTrust OPTIONAL,
+     *     osVersion                  [705] EXPLICIT INTEGER OPTIONAL,
+     *     osPatchLevel               [706] EXPLICIT INTEGER OPTIONAL,
+     *     attestationApplicationId   [709] EXPLICIT OCTET_STRING OPTIONAL,
+     *     attestationIdBrand         [710] EXPLICIT OCTET_STRING OPTIONAL,
+     *     attestationIdDevice        [711] EXPLICIT OCTET_STRING OPTIONAL,
+     *     attestationIdProduct       [712] EXPLICIT OCTET_STRING OPTIONAL,
+     *     attestationIdSerial        [713] EXPLICIT OCTET_STRING OPTIONAL,
+     *     attestationIdImei          [714] EXPLICIT OCTET_STRING OPTIONAL,
+     *     attestationIdMeid          [715] EXPLICIT OCTET_STRING OPTIONAL,
+     *     attestationIdManufacturer  [716] EXPLICIT OCTET_STRING OPTIONAL,
+     *     attestationIdModel         [717] EXPLICIT OCTET_STRING OPTIONAL,
+     *     vendorPatchLevel           [718] EXPLICIT INTEGER OPTIONAL,
+     *     bootPatchLevel             [719] EXPLICIT INTEGER OPTIONAL,
+     * }
      */
     Certificate[] certificateChain;
 }
diff --git a/security/keymint/aidl/android/hardware/security/keymint/Tag.aidl b/security/keymint/aidl/android/hardware/security/keymint/Tag.aidl
index 1639f38..02e7f00 100644
--- a/security/keymint/aidl/android/hardware/security/keymint/Tag.aidl
+++ b/security/keymint/aidl/android/hardware/security/keymint/Tag.aidl
@@ -920,33 +920,34 @@
     CONFIRMATION_TOKEN = (9 << 28) /* TagType:BYTES */ | 1005,
 
     /**
-     * Tag::CERTIFICATE_SERIAL specifies the serial number to be assigned to the
-     * attestation certificate to be generated for the given key.  This parameter should only
-     * be passed to keyMint in the attestation parameters during generateKey() and importKey().
+     * Tag::CERTIFICATE_SERIAL specifies the serial number to be assigned to the attestation
+     * certificate to be generated for the given key.  This parameter should only be passed to
+     * keyMint in the attestation parameters during generateKey() and importKey().  If not provided,
+     * the serial shall default to 1.
      */
     CERTIFICATE_SERIAL = (8 << 28) /* TagType:BIGNUM */ | 1006,
 
     /**
-     * Tag::CERTIFICATE_SUBJECT the certificate subject. The value is a DER encoded X509 NAME.
-     * This value is used when generating a self signed certificates. This tag may be specified
+     * Tag::CERTIFICATE_SUBJECT the certificate subject.  The value is a DER encoded X509 NAME.
+     * This value is used when generating a self signed certificates.  This tag may be specified
      * during generateKey and importKey. If not provided the subject name shall default to
-     * <TODO default subject here>.
+     * CN="Android Keystore Key".
      */
     CERTIFICATE_SUBJECT = (9 << 28) /* TagType:BYTES */ | 1007,
 
     /**
      * Tag::CERTIFICATE_NOT_BEFORE the beginning of the validity of the certificate in UNIX epoch
-     * time in seconds. This value is used when generating attestation or self signed certificates.
-     * ErrorCode::MISSING_NOT_BEFORE must be returned if this tag is not provided if this tag is
-     * not provided to generateKey or importKey.
+     * time in seconds.  This value is used when generating attestation or self signed certificates.
+     * ErrorCode::MISSING_NOT_BEFORE must be returned if this tag is not provided if this tag is not
+     * provided to generateKey or importKey.
      */
     CERTIFICATE_NOT_BEFORE = (6 << 28) /* TagType:DATE */ | 1008,
 
     /**
-     * Tag::CERTIFICATE_NOT_AFTER the end of the validity of the certificate in UNIX epoch
-     * time in seconds. This value is used when generating attestation or self signed certificates.
-     * ErrorCode::MISSING_NOT_AFTER must be returned if this tag is not provided to generateKey
-     * or importKey.
+     * Tag::CERTIFICATE_NOT_AFTER the end of the validity of the certificate in UNIX epoch time in
+     * seconds.  This value is used when generating attestation or self signed certificates.
+     * ErrorCode::MISSING_NOT_AFTER must be returned if this tag is not provided to generateKey or
+     * importKey.
      */
     CERTIFICATE_NOT_AFTER = (6 << 28) /* TagType:DATE */ | 1009,
 
diff --git a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
index 8c3777f..61f2f77 100644
--- a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
+++ b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
@@ -941,7 +941,7 @@
     EXPECT_EQ(ErrorCode::OK, error);
     if (error != ErrorCode::OK) return false;
 
-    EXPECT_GE(att_attestation_version, 3U);
+    EXPECT_EQ(att_attestation_version, 100U);
     vector<uint8_t> appId(app_id.begin(), app_id.end());
 
     // check challenge and app id only if we expects a non-fake certificate
@@ -952,7 +952,7 @@
         expected_sw_enforced.push_back(TAG_ATTESTATION_APPLICATION_ID, appId);
     }
 
-    EXPECT_GE(att_keymaster_version, 4U);
+    EXPECT_EQ(att_keymaster_version, 100U);
     EXPECT_EQ(security_level, att_keymaster_security_level);
     EXPECT_EQ(security_level, att_attestation_security_level);
 
diff --git a/vibrator/aidl/aidl_api/android.hardware.vibrator/current/android/hardware/vibrator/CompositeEffect.aidl b/vibrator/aidl/aidl_api/android.hardware.vibrator/current/android/hardware/vibrator/CompositeEffect.aidl
index 8cb259f..7431804 100644
--- a/vibrator/aidl/aidl_api/android.hardware.vibrator/current/android/hardware/vibrator/CompositeEffect.aidl
+++ b/vibrator/aidl/aidl_api/android.hardware.vibrator/current/android/hardware/vibrator/CompositeEffect.aidl
@@ -19,6 +19,6 @@
 @VintfStability
 parcelable CompositeEffect {
   int delayMs;
-  android.hardware.vibrator.CompositePrimitive primitive;
+  android.hardware.vibrator.CompositePrimitive primitive = android.hardware.vibrator.CompositePrimitive.NOOP;
   float scale;
 }
diff --git a/vibrator/aidl/android/hardware/vibrator/CompositeEffect.aidl b/vibrator/aidl/android/hardware/vibrator/CompositeEffect.aidl
index 406a899..5a990c0 100644
--- a/vibrator/aidl/android/hardware/vibrator/CompositeEffect.aidl
+++ b/vibrator/aidl/android/hardware/vibrator/CompositeEffect.aidl
@@ -22,7 +22,7 @@
 parcelable CompositeEffect {
     /* Period of silence preceding primitive. */
     int delayMs;
-    CompositePrimitive primitive;
+    CompositePrimitive primitive = CompositePrimitive.NOOP;
     /*
      * 0.0 (inclusive) - 1.0 (inclusive),
      * where 0.0 is minimum "feelable" amplitude.