[ANR] Deadlock in firebase messaging (WakeLockHolder.java) #4315
Description
Environment
- Firebase messaging 23.0.8
- Firebase BOM 30.5.0
The problem
We are seeing a lot of ANRs in the crashlytics console that originate from Firebase Messaging. Crashlytics claims they're caused by a deadlock.
main (blocked):tid=1 systid=9247 | waiting to lock <0x0891a599> (java.lang.Object) held by thread 25 at com.google.firebase.messaging.WakeLockHolder.completeWakefulIntent(WakeLockHolder.java:141) at com.google.firebase.messaging.WakeLockHolder$$ExternalSyntheticLambda0.onComplete(R8$$SyntheticClass:3) at com.google.android.gms.tasks.zzi.run(zzi.java:1) at com.google.android.gms.measurement.internal.zzl.run$bridge(com.google.android.gms:play-services-measurement-sdk@@21.1.1:27) at com.google.firebase.messaging.FcmBroadcastProcessor$$InternalSyntheticLambda$1$20ad64d025a971aa803b176a540e5710ff1caab22d62957ae57bd1390f50ccfd$0.execute(FcmBroadcastProcessor.java) at com.google.android.gms.tasks.zzj.zzd(com.google.android.gms:play-services-tasks@@18.0.1:3) at com.google.android.gms.tasks.zzr.zzb(com.google.android.gms:play-services-tasks@@18.0.1:5) at com.google.android.gms.tasks.zzw.zze(zzw.java:3) at com.google.android.gms.tasks.TaskCompletionSource.trySetResult(com.google.android.gms:play-services-tasks@@18.0.1:1) at com.google.firebase.messaging.WithinAppServiceConnection$BindRequest.finish(WithinAppServiceConnection.java:88) at com.google.firebase.messaging.WithinAppServiceBinder.lambda$send$0(WithinAppServiceBinder.java:55) at com.google.firebase.messaging.WithinAppServiceBinder$$InternalSyntheticLambda$2$28aec3a1d612c50761b821163886dacf3adcb6f56220725f43c11adc87a189da$1.onComplete$bridge(WithinAppServiceBinder.java:14) at com.google.android.gms.tasks.zzi.run(zzi.java:1) at com.google.android.gms.measurement.internal.zzl.run$bridge(com.google.android.gms:play-services-measurement-sdk@@21.1.1:27) at com.google.firebase.messaging.FcmBroadcastProcessor$$InternalSyntheticLambda$1$20ad64d025a971aa803b176a540e5710ff1caab22d62957ae57bd1390f50ccfd$0.execute(FcmBroadcastProcessor.java) at com.google.android.gms.tasks.zzj.zzd(com.google.android.gms:play-services-tasks@@18.0.1:3) at com.google.android.gms.tasks.zzr.zzb(com.google.android.gms:play-services-tasks@@18.0.1:5) at com.google.android.gms.tasks.zzw.zzi(com.google.android.gms:play-services-tasks@@18.0.1:3) at com.google.android.gms.tasks.zzw.addOnCompleteListener(com.google.android.gms:play-services-tasks@@18.0.1:9) at com.google.firebase.messaging.WithinAppServiceBinder.send(WithinAppServiceBinder.java:55) at com.google.firebase.messaging.WithinAppServiceConnection.flushQueue(WithinAppServiceConnection.java:152) at com.google.firebase.messaging.WithinAppServiceConnection.onServiceConnected(WithinAppServiceConnection.java:209) at android.app.LoadedApk$ServiceDispatcher.doConnected(LoadedApk.java:2084) at android.app.LoadedApk$ServiceDispatcher$RunConnection.run(LoadedApk.java:2116) at android.os.Handler.handleCallback(Handler.java:938) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:246) at android.app.ActivityThread.main(ActivityThread.java:8653) at java.lang.reflect.Method.invoke(Method.java) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130)
firebase-iid-executor (blocked):tid=25 systid=9957 | waiting to lock <0x01fdfb47> (t7c) held by thread 1 at com.google.firebase.messaging.WithinAppServiceConnection.b(WithinAppServiceConnection.java:1) at com.google.firebase.messaging.WakeLockHolder.sendWakefulServiceIntent(WakeLockHolder.java:112) at com.google.firebase.messaging.FcmBroadcastProcessor.bindToMessagingService(FcmBroadcastProcessor.java:122) at com.google.firebase.messaging.FcmBroadcastProcessor.startMessagingService(FcmBroadcastProcessor.java:90) at com.google.firebase.messaging.FcmBroadcastProcessor.process(FcmBroadcastProcessor.java:73) at com.google.firebase.iid.FirebaseInstanceIdReceiver.onMessageReceive(FirebaseInstanceIdReceiver.java:52) at com.google.android.gms.cloudmessaging.CloudMessagingReceiver.zzb(com.google.android.gms:play-services-cloud-messaging@@17.0.0:9) at com.google.android.gms.cloudmessaging.CloudMessagingReceiver.zza(CloudMessagingReceiver.java:4) at com.google.android.gms.cloudmessaging.zze.run(com.google.android.gms:play-services-cloud-messaging@@17.0.0:35) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641) at com.google.android.gms.common.util.concurrent.zza.run(zza.java:2) at com.google.android.gms.ads.zzd.run$bridge(com.google.android.gms:play-services-ads-lite@@21.2.0:52) at java.lang.Thread.run(Thread.java:923)
Steps to reproduce:
We do not have steps to reproduce yet.