Unable to get stack trace for native crashes in Crashlytics

Question

I have an Android project which includes native libraries (.so). I have integrated firebase crashlytics into my project. I am able to get crash dump for the Java crashes in firebase crashlytics. However, in case of native crashes - the stack trace is missing For example - it is something like:

Crashed: Thread: SIGSEGV  0x0000000003000000
       at (Missing)()
       at (Missing)()
       at (Missing)()
       at (Missing)()
       at (Missing)()

I have added the debug and release version of the native libs inside the folder app/src/main/obj and app/src/main/libs respectively The relevant portion of the app build.gradle is:

crashlytics {
    enableNdk true
    androidNdkOut 'src/main/obj/'
    androidNdkLibsOut 'src/main/libs/'
    //manifestPath 'src/main/AndroidManifest.xml'
}

I upload the native symbols using the command

./gradlew crashlyticsUploadSymbolsRelease

which returned success (the build variant of my application is Release). I also did

./gradlew crashlyticsUploadSymbolsDebug

just to be sure, but that also didn't help.

So my questions are:

1. Is there some step which I am missing?

2. How can I debug and fix this?

Answer 1

Do not forget to check the verbose output of the command ./gradlew crashlyticsUploadSymbolsRelease --debug. It must show message like Crashlytics symbol file uploaded successfully. If it is not the case, check the surrounding messages that could indicate the root cause.

This was not sufficient in my case, and to fix the issue, I followed an advice found here: I set android:extractNativeLibs to true in the AndroidManifest.xml file.

<application
    android:extractNativeLibs="true"
    ...
</application>

Note that this settings has an impact on the apk size and its installation size as explained here: Setting android:extractNativeLibs=false to reduce app size