Fenix: Crash in [@ java.lang.NullPointerException: Attempt to read from field 'java.lang.String android.content.pm.PackageItemInfo.packageName' on a null object reference]

[lomomcat]

Steps to reproduce

Visit baidu.com

Device information

• Android device: Xiaomi Redmi Note 8 Pro
• Fenix version: Nightly 200922 06:07

5f64d0db-e220-4052-b70e-9fe643ddd0b9

java.lang.NullPointerException: Attempt to read from field 'java.lang.String android.content.pm.PackageItemInfo.packageName' on a null object reference

java.lang.NullPointerException: Attempt to read from field 'java.lang.String android.content.pm.PackageItemInfo.packageName' on a null object reference
    at android.os.Parcel.createException(Parcel.java:2080)
    at android.os.Parcel.readException(Parcel.java:2042)
    at android.os.Parcel.readException(Parcel.java:1990)
    at android.app.IActivityTaskManager$Stub$Proxy.startActivity(IActivityTaskManager.java:3973)
    at android.app.Instrumentation.execStartActivity(Instrumentation.java:1714)
    at android.app.Activity.startActivityForResult(Activity.java:5258)
    at androidx.fragment.app.FragmentActivity.startActivityForResult(FragmentActivity.java:6)
    at android.app.Activity.startActivityForResult(Activity.java:5216)
    at androidx.fragment.app.FragmentActivity.startActivityForResult(FragmentActivity.java:3)
    at android.app.Activity.startActivity(Activity.java:5587)
    at android.app.Activity.startActivity(Activity.java:5555)
    at mozilla.components.feature.app.links.AppLinksUseCases$OpenAppLinkRedirect.invoke(AppLinksUseCases.kt:4)
    at mozilla.components.feature.app.links.AppLinksUseCases$OpenAppLinkRedirect.invoke$default(AppLinksUseCases.kt:1)
    at mozilla.components.feature.app.links.AppLinksFeature$observer$1$onLaunchIntentRequest$doOpenApp$1.invoke(AppLinksFeature.kt:1)
    at mozilla.components.feature.app.links.AppLinksFeature$observer$1.onLaunchIntentRequest(AppLinksFeature.kt:10)
    at mozilla.components.browser.session.-$$LambdaGroup$ks$_UjHvIoGPBlrnpLBhPWojiLCNo4.invoke(com.android.tools.r8.jetbrains.kotlin-style lambda group:6)
    at mozilla.components.support.base.observer.ObserverRegistry.notifyObservers(ObserverRegistry.kt:4)
    at mozilla.components.browser.session.Session.notifyObservers(Unknown Source:7)
    at mozilla.components.browser.session.Session$$special$$inlined$observable$9.afterChange(Delegates.kt:2)
    at kotlin.properties.ObservableProperty.setValue(ObservableProperty.kt:4)
    at mozilla.components.browser.session.Session.setLaunchIntentMetadata(Unknown Source:13)
    at mozilla.components.browser.session.engine.EngineObserver.onLaunchIntentRequest(EngineObserver.kt:1)
    at mozilla.components.browser.engine.gecko.-$$LambdaGroup$ks$5d9qHqYqF66uxPoGlnXx4EfR-Tw.invoke(com.android.tools.r8.jetbrains.kotlin-style lambda group:34)
    at mozilla.components.support.base.observer.ObserverRegistry.notifyObservers(ObserverRegistry.kt:4)
    at mozilla.components.concept.engine.EngineSession.notifyObservers(Unknown Source:7)
    at mozilla.components.browser.engine.gecko.GeckoEngineSession$createNavigationDelegate$1.maybeInterceptRequest(GeckoEngineSession.kt:13)
    at mozilla.components.browser.engine.gecko.GeckoEngineSession$createNavigationDelegate$1.onSubframeLoadRequest(GeckoEngineSession.kt:3)
    at org.mozilla.geckoview.GeckoSession$Window$1.run(GeckoSession.java:8)
    at android.os.Handler.handleCallback(Handler.java:914)
    at android.os.Handler.dispatchMessage(Handler.java:100)
    at android.os.Looper.loop(Looper.java:227)
    at android.app.ActivityThread.main(ActivityThread.java:7591)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:995)
Caused by: android.os.RemoteException: Remote stack trace:
    at com.android.server.wm.ActivityStackSupervisorInjector.resolveXSpaceIntent(ActivityStackSupervisorInjector.java:108)
    at com.android.server.wm.ActivityStarter.startActivityMayWait(ActivityStarter.java:1292)
    at com.android.server.wm.ActivityStarter.execute(ActivityStarter.java:515)
    at com.android.server.wm.ActivityTaskManagerService.startActivityAsUser(ActivityTaskManagerService.java:1107)
    at com.android.server.wm.ActivityTaskManagerService.startActivityAsUser(ActivityTaskManagerService.java:1076)

[lomomcat]

Multiple identical crashes



Crashed again when I visited https://www.jianshu.com/p/c56d5d79ce8b

[lomomcat]

Often crashes.

[Amejia481]

cc @rocketsroger

[rocketsroger]

@lomomcat Thanks for reporting this. Couple questions:

1. Do you still see this crash?
2. If you still see this crash, does this happens consistently everytime? or just a lot of not everytime?

Thanks

[rocketsroger]

Looks like this issue occurs in some Xiaomi, Redmi and TCL devices. Not a lot of crash reports but when it happens to a device Fenix crashes a lot. There's nothing we can do to avoid the NullPointerException, but I can put in a workaround so we continue to load the URL.

[lomomcat]

Looks like this issue occurs in some Xiaomi, Redmi and TCL devices. Not a lot of crash reports but when it happens to a device Fenix crashes a lot. There's nothing we can do to avoid the NullPointerException, but I can put in a workaround so we continue to load the URL.

The issue is too old. The crash had been fixed.

[lomomcat]

@rocketsroger Another serious problem that still exists and has not been addressed for a long time needs to be fixed by developers.
#16357

[rocketsroger]

This is fixed with A-C side changes https://github.com/mozilla-mobile/android-components/issues/9075 and https://github.com/mozilla-mobile/android-components/issues/9075