[cronet_http] Crash occurring on 32bit android devices since version 1.2.1

[veloce]

Using the official example, I consistently reproduce a crash when launching the application on a Samsung Galaxy A11 running on android 10 (using Browserstack App Live).

I'm building the application using flutter main channel.

Here are the logs:

05-28 10:47:48.334 E/FlutterLoader(22190): java.util.concurrent.ExecutionException: java.lang.UnsupportedOperationException: Could not load libflutter.so this is possibly because the application is running on an architecture that Flutter Android does not support (e.g. x86) see https://docs.flutter.dev/deployment/android#what-are-the-supported-target-architectures for more detail.

05-28 10:47:48.340 E/AndroidRuntime(22190): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.cronet_crash_demo/com.example.cronet_crash_demo.MainActivity}: java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.UnsupportedOperationException: Could not load libflutter.so this is possibly because the application is running on an architecture that Flutter Android does not support (e.g. x86) see https://docs.flutter.dev/deployment/android#what-are-the-supported-target-architectures for more detail.

05-28 10:47:48.340 E/AndroidRuntime(22190): Caused by: java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.UnsupportedOperationException: Could not load libflutter.so this is possibly because the application is running on an architecture that Flutter Android does not support (e.g. x86) see https://docs.flutter.dev/deployment/android#what-are-the-supported-target-architectures for more detail.

05-28 10:47:48.340 E/AndroidRuntime(22190): Caused by: java.util.concurrent.ExecutionException: java.lang.UnsupportedOperationException: Could not load libflutter.so this is possibly because the application is running on an architecture that Flutter Android does not support (e.g. x86) see https://docs.flutter.dev/deployment/android#what-are-the-supported-target-architectures for more detail.

The application runs fine on the same device with cronet_http version 1.2.0.

I cannot ascertain it, but based on crash reports in my application it looks like these also suffer from the crash (and probably others):

• ZTE Blade A31
• Galaxy A01 Core

[brianquinlan]

What version of Android are you using on your Galaxy A11?

[brianquinlan]

Can you reproduce this with package:cronet_http 1.3.0?

[brianquinlan]

I looked at the change history - the only thing that changed in package:cronet_http between 1.2.0 and 1.2.1 was upgrading the version of package:jni used from 0.7.3 to 0.9.1 and removal of the bindings_type: dart_only configuration in jnigen.yaml (but this is the default inpackage:jnigen so it shouldn't have affected anything).

I couldn't find any similar issues reported on package:jni/package:jnigen but that doesn't mean that those aren't the problem.

Any help with a reproduction that doesn't require owning a specific phone module would be helpful.

[veloce]

I do reproduce with cronet_http 1.3.0.

But I can only reproduce on these 2 devices: Samsung Galaxy A10 (android 9) and Samsung Galaxy A11 (android 10).

That's about all the information I can provide now. Let me know if I can help in any other way.

[brianquinlan]

@HosseinYousefi Can you think of any way that this issue could be related to package:jni/package:jnigen?

If not, I'll see more help to reproduce @veloce

[HosseinYousefi]

I mean if the only change is the jni version. Then maybe that causes the issue. The error message doesn't seem to be related to jni though. Does it also happen on flutter stable?

[veloce]

I could reproduce on flutter stable (still with the Galaxy A11). This time I managed to get more logs:

05-30 19:20:27.977 E/FlutterLoader(12954): Flutter initialization failed.
05-30 19:20:27.977 E/FlutterLoader(12954): java.util.concurrent.ExecutionException: java.lang.UnsupportedOperationException: Could not load libflutter.so this is possibly because the application is running on an architecture that Flutter Android does not support (e.g. x86) see https://docs.flutter.dev/deployment/android#what-are-the-supported-target-architectures for more detail.
05-30 19:20:27.977 E/FlutterLoader(12954): App is using cpu architecture: armv8l, and the native libraries directory (with path /data/app/com.example.cronet_crash_demo_stable-NRd6mA3lmJgtLwratNLKng==/lib/arm) contains the following files: [libdartjni.so]
05-30 19:20:27.977 E/FlutterLoader(12954): 	at java.util.concurrent.FutureTask.report(FutureTask.java:123)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at java.util.concurrent.FutureTask.get(FutureTask.java:193)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at io.flutter.embedding.engine.loader.FlutterLoader.ensureInitializationComplete(FlutterLoader.java:260)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at io.flutter.embedding.engine.FlutterEngineGroup.<init>(FlutterEngineGroup.java:63)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at io.flutter.embedding.android.FlutterActivityAndFragmentDelegate.setUpFlutterEngine(FlutterActivityAndFragmentDelegate.java:328)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at io.flutter.embedding.android.FlutterActivityAndFragmentDelegate.onAttach(FlutterActivityAndFragmentDelegate.java:193)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at io.flutter.embedding.android.FlutterActivity.onCreate(FlutterActivity.java:638)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at android.app.Activity.performCreate(Activity.java:7955)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at android.app.Activity.performCreate(Activity.java:7944)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1307)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3423)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3595)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2147)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at android.os.Handler.dispatchMessage(Handler.java:107)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at android.os.Looper.loop(Looper.java:237)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at android.app.ActivityThread.main(ActivityThread.java:7814)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at java.lang.reflect.Method.invoke(Native Method)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1075)
05-30 19:20:27.977 E/FlutterLoader(12954): Caused by: java.lang.UnsupportedOperationException: Could not load libflutter.so this is possibly because the application is running on an architecture that Flutter Android does not support (e.g. x86) see https://docs.flutter.dev/deployment/android#what-are-the-supported-target-architectures for more detail.
05-30 19:20:27.977 E/FlutterLoader(12954): App is using cpu architecture: armv8l, and the native libraries directory (with path /data/app/com.example.cronet_crash_demo_stable-NRd6mA3lmJgtLwratNLKng==/lib/arm) contains the following files: [libdartjni.so]
05-30 19:20:27.977 E/FlutterLoader(12954): 	at io.flutter.embedding.engine.loader.FlutterLoader$1.call(FlutterLoader.java:209)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at io.flutter.embedding.engine.loader.FlutterLoader$1.call(FlutterLoader.java:176)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at java.lang.Thread.run(Thread.java:919)
05-30 19:20:27.977 E/FlutterLoader(12954): Caused by: java.lang.UnsatisfiedLinkError: dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/com.example.cronet_crash_demo_stable-NRd6mA3lmJgtLwratNLKng==/base.apk"],nativeLibraryDirectories=[/data/app/com.example.cronet_crash_demo_stable-NRd6mA3lmJgtLwratNLKng==/lib/arm, /data/app/com.example.cronet_crash_demo_stable-NRd6mA3lmJgtLwratNLKng==/base.apk!/lib/armeabi-v7a, /system/lib, /product/lib]]] couldn't find "libflutter.so"
05-30 19:20:27.977 E/FlutterLoader(12954): 	at java.lang.Runtime.loadLibrary0(Runtime.java:1067)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at java.lang.Runtime.loadLibrary0(Runtime.java:1007)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at java.lang.System.loadLibrary(System.java:1667)
05-30 19:20:27.977 E/FlutterLoader(12954): 	at io.flutter.embedding.engine.FlutterJNI.loadLibrary(FlutterJNI.java:147)
05-30 19:20:27.978 E/FlutterLoader(12954): 	at io.flutter.embedding.engine.loader.FlutterLoader$1.call(FlutterLoader.java:183)
05-30 19:20:27.978 E/FlutterLoader(12954): 	... 5 more
05-30 19:20:27.978 D/AndroidRuntime(12954): Shutting down VM
05-30 19:20:27.983 E/AndroidRuntime(12954): FATAL EXCEPTION: main
05-30 19:20:27.983 E/AndroidRuntime(12954): Process: com.example.cronet_crash_demo_stable, PID: 12954
05-30 19:20:27.983 E/AndroidRuntime(12954): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.cronet_crash_demo_stable/com.example.cronet_crash_demo_stable.MainActivity}: java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.UnsupportedOperationException: Could not load libflutter.so this is possibly because the application is running on an architecture that Flutter Android does not support (e.g. x86) see https://docs.flutter.dev/deployment/android#what-are-the-supported-target-architectures for more detail.
05-30 19:20:27.983 E/AndroidRuntime(12954): App is using cpu architecture: armv8l, and the native libraries directory (with path /data/app/com.example.cronet_crash_demo_stable-NRd6mA3lmJgtLwratNLKng==/lib/arm) contains the following files: [libdartjni.so]
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3448)
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3595)
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2147)
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at android.os.Handler.dispatchMessage(Handler.java:107)
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at android.os.Looper.loop(Looper.java:237)
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at android.app.ActivityThread.main(ActivityThread.java:7814)
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at java.lang.reflect.Method.invoke(Native Method)
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1075)
05-30 19:20:27.983 E/AndroidRuntime(12954): Caused by: java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.UnsupportedOperationException: Could not load libflutter.so this is possibly because the application is running on an architecture that Flutter Android does not support (e.g. x86) see https://docs.flutter.dev/deployment/android#what-are-the-supported-target-architectures for more detail.
05-30 19:20:27.983 E/AndroidRuntime(12954): App is using cpu architecture: armv8l, and the native libraries directory (with path /data/app/com.example.cronet_crash_demo_stable-NRd6mA3lmJgtLwratNLKng==/lib/arm) contains the following files: [libdartjni.so]
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at io.flutter.embedding.engine.loader.FlutterLoader.ensureInitializationComplete(FlutterLoader.java:377)
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at io.flutter.embedding.engine.FlutterEngineGroup.<init>(FlutterEngineGroup.java:63)
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at io.flutter.embedding.android.FlutterActivityAndFragmentDelegate.setUpFlutterEngine(FlutterActivityAndFragmentDelegate.java:328)
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at io.flutter.embedding.android.FlutterActivityAndFragmentDelegate.onAttach(FlutterActivityAndFragmentDelegate.java:193)
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at io.flutter.embedding.android.FlutterActivity.onCreate(FlutterActivity.java:638)
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at android.app.Activity.performCreate(Activity.java:7955)
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at android.app.Activity.performCreate(Activity.java:7944)
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1307)
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3423)
05-30 19:20:27.983 E/AndroidRuntime(12954): 	... 11 more
05-30 19:20:27.983 E/AndroidRuntime(12954): Caused by: java.util.concurrent.ExecutionException: java.lang.UnsupportedOperationException: Could not load libflutter.so this is possibly because the application is running on an architecture that Flutter Android does not support (e.g. x86) see https://docs.flutter.dev/deployment/android#what-are-the-supported-target-architectures for more detail.
05-30 19:20:27.983 E/AndroidRuntime(12954): App is using cpu architecture: armv8l, and the native libraries directory (with path /data/app/com.example.cronet_crash_demo_stable-NRd6mA3lmJgtLwratNLKng==/lib/arm) contains the following files: [libdartjni.so]
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at java.util.concurrent.FutureTask.report(FutureTask.java:123)
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at java.util.concurrent.FutureTask.get(FutureTask.java:193)
05-30 19:20:27.983 E/AndroidRuntime(12954): 	at io.flutter.embedding.engine.loader.FlutterLoader.ensureInitializationComplete(FlutterLoader.java:260)
05-30 19:20:27.983 E/AndroidRuntime(12954): 	... 19 more
05-30 19:20:27.984 E/AndroidRuntime(12954): Caused by: java.lang.UnsupportedOperationException: Could not load libflutter.so this is possibly because the application is running on an architecture that Flutter Android does not support (e.g. x86) see https://docs.flutter.dev/deployment/android#what-are-the-supported-target-architectures for more detail.
05-30 19:20:27.984 E/AndroidRuntime(12954): App is using cpu architecture: armv8l, and the native libraries directory (with path /data/app/com.example.cronet_crash_demo_stable-NRd6mA3lmJgtLwratNLKng==/lib/arm) contains the following files: [libdartjni.so]
05-30 19:20:27.984 E/AndroidRuntime(12954): 	at io.flutter.embedding.engine.loader.FlutterLoader$1.call(FlutterLoader.java:209)
05-30 19:20:27.984 E/AndroidRuntime(12954): 	at io.flutter.embedding.engine.loader.FlutterLoader$1.call(FlutterLoader.java:176)
05-30 19:20:27.984 E/AndroidRuntime(12954): 	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
05-30 19:20:27.984 E/AndroidRuntime(12954): 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
05-30 19:20:27.984 E/AndroidRuntime(12954): 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
05-30 19:20:27.984 E/AndroidRuntime(12954): 	at java.lang.Thread.run(Thread.java:919)
05-30 19:20:27.984 E/AndroidRuntime(12954): Caused by: java.lang.UnsatisfiedLinkError: dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/com.example.cronet_crash_demo_stable-NRd6mA3lmJgtLwratNLKng==/base.apk"],nativeLibraryDirectories=[/data/app/com.example.cronet_crash_demo_stable-NRd6mA3lmJgtLwratNLKng==/lib/arm, /data/app/com.example.cronet_crash_demo_stable-NRd6mA3lmJgtLwratNLKng==/base.apk!/lib/armeabi-v7a, /system/lib, /product/lib]]] couldn't find "libflutter.so"
05-30 19:20:27.984 E/AndroidRuntime(12954): 	at java.lang.Runtime.loadLibrary0(Runtime.java:1067)
05-30 19:20:27.984 E/AndroidRuntime(12954): 	at java.lang.Runtime.loadLibrary0(Runtime.java:1007)
05-30 19:20:27.984 E/AndroidRuntime(12954): 	at java.lang.System.loadLibrary(System.java:1667)
05-30 19:20:27.984 E/AndroidRuntime(12954): 	at io.flutter.embedding.engine.FlutterJNI.loadLibrary(FlutterJNI.java:147)
05-30 19:20:27.984 E/AndroidRuntime(12954): 	at io.flutter.embedding.engine.loader.FlutterLoader$1.call(FlutterLoader.java:183)
05-30 19:20:27.984 E/AndroidRuntime(12954): 	... 5 more

Full log here:

app-debug.apk_2024_5_30_21_28_7.log

[brianquinlan]

There are some Cronet-related log lines before the failure e.g. 05-30 19:19:50.265 I/cr_CronetLibraryLoader( 8024): Cronet version: 114.0.5735.84, arch: armv8l so cronet itself is probably not the issue.

Could you try testing these scenarios (to see if you get the same error):

1. try running with cronetHttpNoPlay=true e.g. flutter run --dart-define=cronetHttpNoPlay=true
2. remove the dependency on cronet_http
3. remove the dependency on cronet_http but add one on package:jni (and maybe make one call e.g. Jni.getCachedApplicationContext()

[veloce]

Looks like it is not due to cronet itself. Based on this results I had doubts on what I submitted earlier, so I tried again with cronet_http:1.2.0 and now I see the same error (perhaps I forgot to flutter clean last time?).

For each scenario I used flutter stable and a debug build (and flutter clean in between).
Here are the results:

with cronetHttpNoPlay

• Same error
• I don't see the CronetLibraryLoader in the logs

app-debug.apk_2024_5_31_9_46_1.log

2 Remove dependency on cronet_http

App won't even install, I got this error:

App install failed: INSTALL_FAILED_NO_MATCHING_ABIS

3. remove the dependency on cronet_http but add one on package:jni

With package:jni version 0.9.2: same error

app-debug.apk_2024_5_31_10_14_53.log

With package:jni version 0.7.3, same error.

app-debug.apk_2024_5_31_10_24_1.log

[veloce]

Now I could finally reproduce the problem happening in cronet. I got confused because I was seeing both errors in crashlytics (this one and the libflutter.so not found).

With this Gradle config:

        ndk {
            abiFilters 'armeabi-v7a'
        }

The cronet example app is now running on the Galaxy A11.

And now I can reproduce the difference between cronet_http version 1.2.1+ where I got this error:

05-31 09:53:41.395 E/flutter (19099): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: Invalid argument(s):  Unknown public builder cache mode
05-31 09:53:41.395 E/flutter (19099): #0      CronetEngine.build (package:cronet_http/src/cronet_client.dart:137)
05-31 09:53:41.395 E/flutter (19099): #1      main (package:cronet_http_example/main.dart:20)
05-31 09:53:41.395 E/flutter (19099): #2      _runMain.<anonymous closure> (dart:ui/hooks.dart:301)
05-31 09:53:41.395 E/flutter (19099): #3      _delayEntrypointInvocation.<anonymous closure> (dart:isolate-patch/isolate_patch.dart:297)
05-31 09:53:41.395 E/flutter (19099): #4      _RawReceivePort._handleMessage (dart:isolate-patch/isolate_patch.dart:184)
05-31 09:53:41.395 E/flutter (19099): 

app-release.apk_2024_5_31_12_0_30.log

And cronet_http version 1.2.0 where it runs fine.

app-release.apk_2024_5_31_12_16_11.log

EDIT

I also tried with --dart-define=cronetHttpNoPlay=true and got the same error. Also made a debug build to send the logs in case it is useful:

app-debug.apk_2024_5_31_12_35_25.log

[brianquinlan]

It looks like that exception comes from here:
https://chromium.googlesource.com/chromium/src/+/lkgr/components/cronet/android/java/src/org/chromium/net/impl/CronetEngineBuilderImpl.java?autodive=0%2F%2F#123

It looks like the documented cache mode constants:
https://developer.android.com/develop/connectivity/cronet/reference/org/chromium/net/CronetEngine.Builder.html#constants

Match what package:cronet_http is using:

http/pkgs/cronet_http/lib/src/cronet_client.dart

Line 43 in 6337ee3

enum CacheMode {

What cache mode are you using in CronetEngine.build?