FATAL error in UWB backend at session creation [284078036]

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Bug

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Description

al...@gmail.com

created issue #1

May 24, 2023 12:32PM

Hello here!

I am encountering a fatal error with UWB core when ranging from a third-party device with a Google Pixel Pro 7. I could not define the root cause of the error as my UWB sessions are working most of the time.

My Pixel pro is running Android 13 QPR Bêta (5.10.157-android13-4-00002).

Here are the relevant logs:

2023/05/24 14:10:03.446 11500 11627 Debug Assets.Plugins.Android.UwbManagerHelper Uwb device supported UWB profile IDs: 0000000e, selected UWB profile ID: 1
2023/05/24 14:10:03.446 11500 11627 Debug Assets.Plugins.Android.UwbManagerHelper Android device will act as Controlee!
2023/05/24 14:10:03.447 11500 11604 Info UwbMangerImpl Creating Gms Client session scope
0001/01/01 00:00:00.000 -1 -1 Info  --------- beginning of crash
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime FATAL EXCEPTION: main
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime Process: <>, PID: 11500
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime java.lang.Error: FATAL EXCEPTION [main]
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime Unity version     : 2022.2.6f1
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime Device model      : Google Pixel 7 Pro
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime Device fingerprint: google/cheetah/cheetah:13/T3B3.230413.006/10033615:user/release-keys
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime CPU supported ABI : [arm64-v8a]
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime Build Type        : Development
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime Scripting Backend : IL2CPP
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime Libs loaded from  : lib/arm64
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime Strip Engine Code : true
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime 
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime Caused by: androidx.core.uwb.exceptions.UwbSystemCallbackException: UWB backend system resulted in an error.
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime 	at androidx.core.uwb.helper.UwbHelperKt.handleApiException(UwbHelper.kt:50)
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime 	at androidx.core.uwb.impl.UwbClientSessionScopeImpl$prepareSession$1$1$1.invokeSuspend(UwbClientSessionScopeImpl.kt:140)
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime 	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime 	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:104)
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime 	at android.os.Handler.handleCallback(Handler.java:942)
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime 	at android.os.Handler.dispatchMessage(Handler.java:99)
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime 	at android.os.Looper.loopOnce(Looper.java:201)
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime 	at android.os.Looper.loop(Looper.java:288)
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime 	at android.app.ActivityThread.main(ActivityThread.java:7918)
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime 	at java.lang.reflect.Method.invoke(Native Method)
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:936)
2023/05/24 14:10:03.734 11500 11500 Error AndroidRuntime 	Suppressed: kotlinx.coroutines.DiagnosticCoroutineContextException: [StandaloneCoroutine{Cancelling}@a8500df, Dispatchers.Main.immediate]
2023/05/24 14:10:03.741 11500 11627 Debug Assets.Plugins.Android.UwbManagerHelper UWB sessionId: 53ec60df
2023/05/24 14:10:03.741 11500 11627 Debug Assets.Plugins.Android.UwbManagerHelper UWB Channel params, Channel: 9 preambleIndex: 10
2023/05/24 14:10:03.741 11500 11627 Debug Assets.Plugins.Android.UwbManagerHelper UWB Local Adress: 82:59
2023/05/24 14:10:03.741 11500 11627 Debug Assets.Plugins.Android.UwbManagerHelper UWB Destination Adress: 10:F2
2023/05/24 14:10:03.741 11500 11627 Debug Assets.Plugins.Android.UwbManagerHelper Configure ranging parameters for Profile ID: 1
2023/05/24 14:10:03.741 11500 11627 Debug Assets.Plugins.Android.UwbManagerHelper Configure controlee flowable
2023/05/24 14:10:03.752 11500 11500 Info Process Sending signal. PID: 11500 SIG: 9

As you can see I am using Unity, but I do not think it is relevant to the issue.

Here is the Java part of my code:

        if (mUwbManager == null)
        {
            Activity unityPlayerActivity = UnityPlayer.currentActivity;
            Context context = unityPlayerActivity.getApplicationContext();
            mUwbManager = UwbManager.createInstance(context);
        }

        UwbDeviceConfigData uwbDeviceConfigData = UwbDeviceConfigData.fromByteArray(deviceConfigData);

        Thread t = new Thread(() -> {
            byte uwbProfileId = selectUwbProfileId(uwbDeviceConfigData.getSupportedUwbProfileIds());
            Log.d(LOG_TAG, "Uwb device supported UWB profile IDs: " + String.format("%08x", uwbDeviceConfigData.getSupportedUwbProfileIds()) + ", selected UWB profile ID: " + uwbProfileId);

            try {
                Log.d(LOG_TAG, "Android device will act as Controlee!");
                Single<UwbControleeSessionScope> mControleeSessionScopeSingle = UwbManagerRx.controleeSessionScopeSingle(mUwbManager);
                UwbControleeSessionScope mControleeSessionScope = mControleeSessionScopeSingle.blockingGet();

                UwbAddress localAddress = mControleeSessionScope.getLocalAddress();

                // Assign a random Session ID
                int sessionId = new Random().nextInt();
                Log.d(LOG_TAG, "UWB sessionId: " +  String.format("%08x", sessionId));

                UwbComplexChannel uwbComplexChannel = new UwbComplexChannel(mUwbChannel, mUwbPreambleIndex);
                Log.d(LOG_TAG, "UWB Channel params, Channel: " + mUwbChannel + " preambleIndex: " + mUwbPreambleIndex);

                // Need to pass the local address to the other peer
                Log.d(LOG_TAG, "UWB Local Adress: " + localAddress);

                // UWB Shield device
                UwbAddress shieldUwbAddress = new UwbAddress(Utils.revert(uwbDeviceConfigData.getDeviceMacAddress()));
                UwbDevice shieldUwbDevice = new UwbDevice(shieldUwbAddress);
                Log.d(LOG_TAG, "UWB Destination Adress: " + shieldUwbAddress);

                List<UwbDevice> listUwbDevices = new ArrayList<>();
                listUwbDevices.add(shieldUwbDevice);

                Log.d(LOG_TAG, "Configure ranging parameters for Profile ID: " + uwbProfileId);
                RangingParameters rangingParameters = new RangingParameters(
                        uwbProfileId,
                        sessionId,
                        null,
                        uwbComplexChannel,
                        listUwbDevices,
                        RangingParameters.RANGING_UPDATE_RATE_AUTOMATIC
                );

                Flowable<RangingResult> rangingResultFlowable = null;
                Log.d(LOG_TAG, "Configure controlee flowable");
                rangingResultFlowable =
                        UwbClientSessionScopeRx.rangingResultsFlowable(mControleeSessionScope,
                                rangingParameters);

                // Consume ranging results from Flowable using Disposable
                Disposable mDisposable = rangingResultFlowable
                        .delay(100, TimeUnit.MILLISECONDS)
                        .subscribeWith(new DisposableSubscriber<RangingResult>() {
                            @Override
                            public void onStart() {
                                request(1);
                            }

                            @Override
                            public void onNext(RangingResult rangingResult) {
                                if (rangingResult instanceof RangingResult.RangingResultPosition) {
                                    RangingResult.RangingResultPosition rangingResultPosition = (RangingResult.RangingResultPosition) rangingResult;
                                    if (rangingResultPosition.getPosition().getDistance() != null) {
                                        callback.onRangingResult(node_id, rangingResultPosition.getPosition().getDistance().getValue());
                                    }
                                } else if (rangingResult instanceof RangingResult.RangingResultPeerDisconnected) {
                                    dispose();
                                }
                                request(1);
                            }

                            @Override
                            public void onError(Throwable error) {
                                Log.e(LOG_TAG, "UWB Ranging exception: " + error);
                                callback.onRangingError(node_id);
                            }

                            @Override
                            public void onComplete() {
                                // Nothing to do
                                Log.d(LOG_TAG, "onComplete");
                            }
                        });

                mSessions.put(node_id, mDisposable);

                // Create ShareableData with configured UWB Session params
                UwbPhoneConfigData uwbPhoneConfigData = new UwbPhoneConfigData();
                uwbPhoneConfigData.setSpecVerMajor((short) 0x0100);
                uwbPhoneConfigData.setSpecVerMinor((short) 0x0000);
                uwbPhoneConfigData.setSessionId(sessionId);
                uwbPhoneConfigData.setPreambleIndex((byte) mUwbPreambleIndex);
                uwbPhoneConfigData.setChannel((byte) mUwbChannel);
                uwbPhoneConfigData.setProfileId(uwbProfileId);
                uwbPhoneConfigData.setDeviceRangingRole((byte) (1 << CONTROLLER_ROLE));
                uwbPhoneConfigData.setPhoneMacAddress(Utils.revert(localAddress.getAddress()));

                // Send the UWB ranging session configuration data back to the listener
                callback.onRangingStarted(node_id, uwbPhoneConfigData.toByteArray());
            } catch (Exception e) {
                Log.e(LOG_TAG, "UWB Ranging configuration exception: " + e);
                callback.onRangingError(node_id);
            }
        });

        t.start();
        return true;

As you can see, the crash seems to appear at flowable creation.

To reproduce, I simply create/stop a session a couple times.

Let me know if I can give you more information for this issue.

Thank you for reading me

Regards

Comments

al...@gmail.com <al...@gmail.com> #2May 24, 2023 12:40PM

I am not sure I understand the use case. how can the benchmark be code to real world scenario when it's not possible to do right now ? which scenario is it ?

In any case, since this would be for benchmarking, this would clearly not be available through the public DSL. We should find a semi-private way of doing this (maybe the private variant API object could offer that functionality for instance or a property).

al...@gmail.com <al...@gmail.com> #3May 24, 2023 01:04PM

We want benchmarks to measure code after Progaurd / R8, but it's not possible to turn that on for androidTests in library modules at the moment (to my knowledge?)

Benchmarks are also a public facing thing, but we have a plugin to help configure gradle builds for our users, so if support for this ends up in a private API, we could try to keep those usages localized to our code perhaps.

rp...@google.com <rp...@google.com> May 24, 2023 04:49PM

Reassigned to zi...@google.com.

zi...@google.com <zi...@google.com> #4Jun 8, 2023 05:44PM

Reassigned to al...@gmail.com.

Hi Jerome,

Any update on the status of this request and when it can be supported?

Thanks,
Amanda

Issue 284078036

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al...@gmail.com <al...@gmail.com> #2May 24, 2023 12:40PM

al...@gmail.com <al...@gmail.com> #3May 24, 2023 01:04PM

rp...@google.com <rp...@google.com> May 24, 2023 04:49PM

zi...@google.com <zi...@google.com> #4Jun 8, 2023 05:44PM

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