Unity as a Library with Xamarin Forms Android crash

Hi Unity,

I'm currently working on implementing Unity (using 2020.2.4f1) as a library in Xamarin Forms, but I'm running into a very weird crash issue. Unity works as a view, and renders correctly, but if I open any other views after having opened the Unity view, the app dies without any good logs, or even a real crash report.

When my visual studio (Xamarin) debugger is attached, the app crashes when I remove the view, where Unity is being rendered without getting a crash report in the logs.

If I don't have the debugger attached I get the following 'crash log' in logcat:

Code (CSharp):

1. E/CRASH: Version '2020.2.4f1 (becced5a802b)', Build type 'Release', Scripting Backend 'il2cpp', CPU 'arm64-v8a'
2. E/CRASH: Build fingerprint: 'OnePlus/OnePlus5/OnePlus5:10/QKQ1.191014.012/2010292059:user/release-keys'
3. E/CRASH: Revision: '0'
4. E/CRASH: ABI: 'arm64'
5. E/CRASH: Timestamp: 2021-02-18 08:44:59+0100
6. E/CRASH: pid: 32362, tid: 1851, name: Thread Pool Wor  >>> com.company.appname <<<
7. E/CRASH: uid: 14298
8. E/CRASH: signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0
9. E/CRASH: Cause: null pointer dereference
10. E/CRASH:     x0  0000000000000000  x1  0000000000000000  x2  00000073817ca13a  x3  00000073703ebe6c
11. E/CRASH:     x4  0000000000000000  x5  00000000c0000000  x6  0000007371578e60  x7  000000735bd34628
12. E/CRASH:     x8  00000073de4f4000  x9  0000000000000000  x10 0000000000000001  x11 0000000000000000
13. E/CRASH:     x12 000000000199a980  x13 00000073de417d00  x14 00000073da2dad50  x15 00000000ffffffff
14. E/CRASH:     x16 00000073dab7b890  x17 00000073ce3ea400  x18 0000000000000008  x19 00000073703ec8c0
15. E/CRASH:     x20 00000073703ecad8  x21 0000000000000000  x22 000000737e694270  x23 000000737e129f18
16. E/CRASH:     x24 000000737e129ea0  x25 000000737e129f98  x26 000000737e0a90d0  x27 0000000000000000
17. E/CRASH:     x28 00000073703ed020  x29 00000073703ec410
18. E/CRASH:     sp  00000073703ec410  lr  00000073dab7b83c  pc  00000073dab7b8a8
19. E/CRASH: backtrace:
20. E/CRASH:       #00 pc 000000000000f8a8  <anonymous:00000073dab6c000>

This log doesn't crash the app immediately (If the debugger is not attached), but it will crash, whenever I navigate to another complex view. This leads me to think it could be GC related. Though I am in no way sure of this. Disabling the GC on the unity side did not make a difference.

This happens when I use a simple scene, or a more complex scene (AR specifically).

I'm using a ViewRenderer in Xamarin Forms Android to display the UnityPlayer. I do not unload or dispose the UnityPlayer. The viewrenderer does get dispose called, though I do not touch the UnityPlayer in there. If I navigate back to my view, I reuse the UnityPlayer, which seems to work fine, if the debugger isn't attached.

I can provide a small sample, if needed to repro. The sample includes the Unity project, a Library binding project and a Xamarin Forms project and a few steps to build.

Is this a Unity or Xamarin issue? Should I report this as a bug and include everything?

 

To update the issue, I seem to be getting these things in the log consistently too:

Code (CSharp):

1. E/native: normal_detector_cpu.cc:229 Error graph_->WaitUntilIdle():INTERNAL: RET_CHECK failure (third_party/mediapipe/framework/scheduler.cc:278) state_ != STATE_NOT_STARTED (0 vs. 0)
2. E/SurfaceFlinger: Permission Denial: SurfaceFlinger did not recognize request code: 20001
3. E/OnePlusService: Exception notifySurfaceFlingerUpdate
4. W/System.err: java.lang.SecurityException
5. W/System.err:     at android.os.BinderProxy.transactNative(Native Method)
6. W/System.err:     at android.os.BinderProxy.transact(BinderProxy.java:557)
7. W/System.err:     at com.oneplus.server.OnePlusService.notifySurfaceFlingerUpdate(Unknown Source:21)
8. W/System.err:     at com.oneplus.os.IOnePlusService$Stub.onTransact(IOnePlusService.java:356)
9. W/System.err:     at android.os.Binder.execTransactInternal(Binder.java:1032)
10. W/System.err:     at android.os.Binder.execTransact(Binder.java:1005)
11. /libc: Access denied finding property "sys.thermal.para"
12. E/voice: voice_is_in_call:in_call 0
13. /qti_sensors_hal: reportSingleEvent: prox data: 0.000000 raw:47.000000 2989048576.000000 SAM TS: 2939256200 HAL TS:1531487037989890 elapsedRealtimeNano:1531487039922972
14. E/AutomaticBrightnessController: mProximityPositive : true
15. E/Layer: [SurfaceView - com.company.appname/crc64c4f195b524672dcf.MainActivity#0] No local sync point found
16. E/qti_sensors_hal: reportSingleEvent: prox data: 5.000305 raw:22.000000 2989048576.000000 SAM TS: 2939263158 HAL TS:1531487250331199 elapsedRealtimeNano:1531487251955420
17. E/AutomaticBrightnessController: mProximityPositive : false
18. E/KernelWakelockReader: Kernel wake locks exceeded buffer size 32768
19. W/InputDispatcher: channel '7f514d1 com.company.appname/crc64c4f195b524672dcf.MainActivity (server)' ~ Consumer closed input channel or an error occurred.  events=0x9
20. E/InputDispatcher: channel '7f514d1 com.company.appname/crc64c4f195b524672dcf.MainActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
21. E/InputDispatcher: Window handle Window{7f514d1 u0 com.company.appname/crc64c4f195b524672dcf.MainActivity} has no registered input channel
22. W/InputDispatcher: Attempted to unregister already unregistered input channel '7f514d1 com.company.appname/crc64c4f195b524672dcf.MainActivity (server)'
23. W/DeviceKeyHandler: onKeyguardOccludedChangedLw false
24. W/ActivityTaskManager: Force removing ActivityRecord{4a1b26d u0 com.company.appname/crc64c4f195b524672dcf.MainActivity t46833}: app died, no saved state
25. W/ActivityManager: setHasOverlayUi called on unknown pid: 24364
26. E/ANDR-PERF-JNI: UXEngine Trigger - Returning null
27. E/RegisteredServicesCache: Next Tag=services
28. E/RegisteredServicesCache: installedServices no uidString
29. E/RegisteredServicesCache: installedServices contains uidString : 10013
30. E/RegisteredServicesCache: installedServices no uidString
31. E/RegisteredServicesCache: 1invalidateCache:WriteServiceStateToFile
32. E/RegisteredServicesCache:  Writing service state Data Always
33. E/RegisteredServicesCache: component namecom.google.android.gms/com.google.android.gms.nearby.mediums.nearfieldcommunication.NfcAdvertisingService
34. E/RegisteredServicesCache: component namecom.google.android.gms/com.google.android.gms.pay.hce.service.PayHceService
35. E/RegisteredServicesCache: component namese.sas.android/se.sas.android.misc.nfc.SmartPassHostApduService
36. E/soundtrigger: audio_extn_sound_trigger_update_stream_status: invalid input device 0x0, for event 2
37. E/audio_hw_primary: disable_snd_device snd_device =2 device_name =speaker
38. W/adbd: timeout expired while flushing socket, closing
39. E/TaskPersister: File error accessing recents directory (directory doesn't exist?).
40. E/libc: Access denied finding property "sys.thermal.para"
41. W/auditd: type=1400 "thermal-engine""u:object_r:system_prop:s0""tmpfs"
42. E/KernelWakelockReader: Kernel wake locks exceeded buffer size 32768
43. W/AlarmManager: Unrecognized alarm listener com.android.server.b@1afe0bc
44. W/auditd: type=1400 "thermal-engine""u:object_r:system_prop:s0""tmpfs"
45. E/libc: Access denied finding property "sys.thermal.para"

It could seem like the surfaceflinger could have something to do with Unity?

 

Having poked around quite a bit more, trying to get a better error message, I've come to a point, where I consistently can get this error. It happens when the Unity view is shown, and the app actually crashes now.

Code (CSharp):

1. 2021-03-01 00:34:56.619 27997-29219/com.company.appname E/CRASH: Forwarding signal 6
2. 2021-03-01 00:34:56.619 27997-29219/com.company.appname A/libc: Fatal signal 6 (SIGABRT), code -1 (SI_QUEUE) in tid 29219 (UnityMain), pid 27997 (.company.appname)
3. 2021-03-01 00:34:56.730 30984-30984/? A/DEBUG: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
4. 2021-03-01 00:34:56.730 30984-30984/? A/DEBUG: Build fingerprint: 'OnePlus/OnePlus5/OnePlus5:10/QKQ1.191014.012/2010292059:user/release-keys'
5. 2021-03-01 00:34:56.730 30984-30984/? A/DEBUG: Revision: '0'
6. 2021-03-01 00:34:56.730 30984-30984/? A/DEBUG: ABI: 'arm64'
7. 2021-03-01 00:34:56.730 30984-30984/? A/DEBUG: Timestamp: 2021-03-01 00:34:56+0100
8. 2021-03-01 00:34:56.730 30984-30984/? A/DEBUG: pid: 27997, tid: 29219, name: UnityMain  >>> com.company.appname <<<
9. 2021-03-01 00:34:56.730 30984-30984/? A/DEBUG: uid: 14298
10. 2021-03-01 00:34:56.730 30984-30984/? A/DEBUG: signal 6 (SIGABRT), code -1 (SI_QUEUE), fault addr --------
11. 2021-03-01 00:34:56.730 30984-30984/? A/DEBUG: Abort message: '* Assertion at /Users/builder/jenkins/workspace/archive-mono/2020-02/android/release/mono/utils/mono-threads.c:650, condition `info' not met, function:mono_thread_info_current,
12.     '
13. 2021-03-01 00:34:56.730 30984-30984/? A/DEBUG:     x0  0000000000000000  x1  0000000000007223  x2  0000000000000006  x3  000000737429b620
14. 2021-03-01 00:34:56.730 30984-30984/? A/DEBUG:     x4  0080000000000000  x5  0080000000000000  x6  0080000000000000  x7  0000000000008000
15. 2021-03-01 00:34:56.730 30984-30984/? A/DEBUG:     x8  00000000000000f0  x9  98b2507f809c96be  x10 0000000000000001  x11 0000000000000000
16. 2021-03-01 00:34:56.730 30984-30984/? A/DEBUG:     x12 fffffff0fffffbdf  x13 0000000000000030  x14 ffffffffffffffff  x15 0000f18671be7449
17. 2021-03-01 00:34:56.730 30984-30984/? A/DEBUG:     x16 000000746e65b8c0  x17 000000746e637900  x18 000000737429c2f8  x19 0000000000006d5d
18. 2021-03-01 00:34:56.730 30984-30984/? A/DEBUG:     x20 0000000000007223  x21 00000000ffffffff  x22 0000000000000000  x23 000000738e033a30
19. 2021-03-01 00:34:56.730 30984-30984/? A/DEBUG:     x24 0000000000000008  x25 0000000000000000  x26 000000737429e020  x27 0000000000000002
20. 2021-03-01 00:34:56.730 30984-30984/? A/DEBUG:     x28 0000000000000002  x29 000000737429b6c0
21. 2021-03-01 00:34:56.730 30984-30984/? A/DEBUG:     sp  000000737429b600  lr  000000746e5e90c4  pc  000000746e5e90f0
22. 2021-03-01 00:34:56.741 30984-30984/? A/DEBUG: backtrace:
23. 2021-03-01 00:34:56.741 30984-30984/? A/DEBUG:       #00 pc 00000000000830f0  /apex/com.android.runtime/lib64/bionic/libc.so (abort+160) (BuildId: e55e6e4c631509598633769798683023)
24. 2021-03-01 00:34:56.741 30984-30984/? A/DEBUG:       #01 pc 000000000028a1b8  /data/app/Mono.Android.DebugRuntime-Xd0RuqBwH2VCcXZj0rcBPQ==/lib/arm64/libmonosgen-64bit-2.0.so (monoeg_assert_abort+24)
25. 2021-03-01 00:34:57.168 1215-1215/? E//system/bin/tombstoned: Tombstone written to: /data/tombstones/tombstone_08

Anyone seen this before and have any ideas how to fix this?

 

Trying to figure out what is happening, when I implement the UnityPlayer in a fragment, I got the follow errors, which might help?

Code (CSharp):

1. 2021-03-12 12:59:01.309 1540-4133/? D/ActivityTaskManager: setRequestedOrientation() to 1 for ActivityRecord{6cf19bb u0 com.company.appname/com.company.companyActivity t47612} from pid=14488, uid=14311
2. 2021-03-12 12:59:01.310 14488-17030/com.company.appname E/libEGL: eglMakeCurrentImpl:1105 error 3002 (EGL_BAD_ACCESS)
3. 2021-03-12 12:59:01.311 14488-17030/com.company.appname E/Unity: [EGL] Unable to acquire context: EGL_BAD_ACCESS: EGL cannot access a requested resource (for example a context is bound in another thread).
4.      #0 0x7005f16f98 (libunity.so) ? 0x0
5.      #1 0x7006790918 (libunity.so) ? 0x0
6.      #2 0x7005f11d88 (libunity.so) ? 0x0
7.      #3 0x7005f101b0 (libunity.so) ? 0x0
8.      #4 0x70061b5e6c (libunity.so) ? 0x0
9.      #5 0x70061b6158 (libunity.so) ? 0x0
10.      #6 0x70061b8034 (libunity.so) ? 0x0
11.      #7 0x707abf1350 (libart.so) art_quick_generic_jni_trampoline 0x90
12.      #8 0x707abe8334 (libart.so) art_quick_invoke_stub 0x224
13.      #9 0x707abf6fec (libart.so) art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*) 0xf4
14.      #10 0x707ad94928 (libart.so) art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, art::ShadowFrame*, unsigned short, art::JValue*) 0x180
15.      #11 0x707ad8fb88 (libart.so) bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*) 0x37c
16.      #12 0x707b054100 (
17. 2021-03-12 12:59:01.311 14488-17030/com.company.appname E/libEGL: eglMakeCurrentImpl:1105 error 3002 (EGL_BAD_ACCESS)
18. 2021-03-12 12:59:01.312 14488-17030/com.company.appname E/Unity: [EGL] Unable to acquire context: EGL_BAD_ACCESS: EGL cannot access a requested resource (for example a context is bound in another thread).
19.      #0 0x7005f16f98 (libunity.so) ? 0x0
20.      #1 0x7006790918 (libunity.so) ? 0x0
21.      #2 0x7005f11d88 (libunity.so) ? 0x0
22.      #3 0x70061b5e74 (libunity.so) ? 0x0
23.      #4 0x70061b6158 (libunity.so) ? 0x0
24.      #5 0x70061b8034 (libunity.so) ? 0x0
25.      #6 0x707abf1350 (libart.so) art_quick_generic_jni_trampoline 0x90
26.      #7 0x707abe8334 (libart.so) art_quick_invoke_stub 0x224
27.      #8 0x707abf6fec (libart.so) art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*) 0xf4
28.      #9 0x707ad94928 (libart.so) art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, art::ShadowFrame*, unsigned short, art::JValue*) 0x180
29.      #10 0x707ad8fb88 (libart.so) bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*) 0x37c
30.      #11 0x707b054100 (libart.so) MterpInvokeDirect 0x1a8
31.      #1
32. 2021-03-12 12:59:01.312 3289-3289/? I/GoogleInputMethodService: GoogleInputMethodService.onFinishInput():3340
33. 2021-03-12 12:59:01.312 3289-3289/? I/GoogleInputMethodService: GoogleInputMethodService.onStartInput():1929
34. 2021-03-12 12:59:01.318 1540-4428/? D/ActivityTaskManager: setRequestedOrientation() to 1 for ActivityRecord{6cf19bb u0 com.company.appname/com.company.companyActivity t47612} from pid=14488, uid=14311
35. 2021-03-12 12:59:01.319 14488-17030/com.company.appname E/libEGL: eglMakeCurrentImpl:1105 error 3002 (EGL_BAD_ACCESS)
36. 2021-03-12 12:59:01.319 14488-17030/com.company.appname E/Unity: [EGL] Unable to acquire context: EGL_BAD_ACCESS: EGL cannot access a requested resource (for example a context is bound in another thread).
37.      #0 0x7005f16f98 (libunity.so) ? 0x0
38.      #1 0x7006790918 (libunity.so) ? 0x0
39.      #2 0x7005f11d88 (libunity.so) ? 0x0
40.      #3 0x7005f101b0 (libunity.so) ? 0x0
41.      #4 0x70061b5e6c (libunity.so) ? 0x0
42.      #5 0x70061b6158 (libunity.so) ? 0x0
43.      #6 0x70061a2600 (libunity.so) ? 0x0
44.      #7 0x70061b8154 (libunity.so) ? 0x0
45.      #8 0x9b4e49fc (jit-cache (deleted)) ? 0x0
46. 2021-03-12 12:59:01.319 14488-17030/com.company.appname E/libEGL: eglMakeCurrentImpl:1105 error 3002 (EGL_BAD_ACCESS)
47. 2021-03-12 12:59:01.319 14488-17030/com.company.appname E/Unity: [EGL] Unable to acquire context: EGL_BAD_ACCESS: EGL cannot access a requested resource (for example a context is bound in another thread).
48.      #0 0x7005f16f98 (libunity.so) ? 0x0
49.      #1 0x7006790918 (libunity.so) ? 0x0
50.      #2 0x7005f11d88 (libunity.so) ? 0x0
51.      #3 0x70061b5e74 (libunity.so) ? 0x0
52.      #4 0x70061b6158 (libunity.so) ? 0x0
53.      #5 0x70061a2600 (libunity.so) ? 0x0
54.      #6 0x70061b8154 (libunity.so) ? 0x0
55.      #7 0x9b4e49fc (jit-cache (deleted)) ? 0x0

Anyone seen this before? Anyone know how to get around this on Android?

Is this Unity forum completely dead? Did Unity stop supporting developers?

 

I have reported this as a reproducable bug with projects to quickly reproduce these crashes.
Bug number is 1321798.

 

Having now built it using Unity 2021 in debug mode, I've gotten the following crash, which might show even better, what is wrong:

Code (CSharp):

1. E/AndroidRuntime: FATAL EXCEPTION: UnityMain
2.     Process: com.company.companyunityapp, PID: 6823
3.     java.lang.Error: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
4.     Version '2021.1.0f1 (61a549675243)', Build type 'Release', Scripting Backend 'il2cpp', CPU 'arm64-v8a'
5.     Build fingerprint: 'OnePlus/OnePlus5/OnePlus5:10/QKQ1.191014.012/2010292059:user/release-keys'
6.     Revision: '0'
7.     ABI: 'arm64'
8.     Timestamp: 2021-03-30 12:08:24+0200
9.     pid: 6823, tid: 7651, name: UnityMain  >>> com.company.companyunityapp <<<
10.     uid: 14312
11.     signal 6 (SIGABRT), code -1 (SI_QUEUE), fault addr --------
12.         x0  0000000000000000  x1  0000000000001de3  x2  0000000000000006  x3  00000070013bcef0
13.         x4  000000000000000a  x5  000000000000000a  x6  000000000000000a  x7  000000000000000a
14.         x8  00000000000000f0  x9  070d7931049703f8  x10 0000000000000001  x11 0000000000000000
15.         x12 fffffff0fffffbdf  x13 6c495c6e69616d5c  x14 0000000000000068  x15 0000000000000000
16.         x16 00000070fed138c0  x17 00000070fecef900  x18 000000700091c000  x19 0000000000001aa7
17.         x20 0000000000001de3  x21 00000000ffffffff  x22 00000070013be560  x23 00000070013c0020
18.         x24 00000070013be560  x25 0000000000000001  x26 00000070013be120  x27 00000070013bd790
19.         x28 00000070013bdbd0  x29 00000070013bcf90
20.         sp  00000070013bced0  lr  00000070feca10c4  pc  00000070feca10f0
21.    
22.     backtrace:
23.           #00 pc 00000000000830f0  /apex/com.android.runtime/lib64/bionic/libc.so (abort+160) (BuildId: e55e6e4c631509598633769798683023)
24.           #01 pc 000000000076b804  /data/app/com.company.companyunityapp-AdSCx8mhwAe1p8LXuqaLhA==/lib/arm64/libil2cpp.so (il2cpp::os::COM::CreateFreeThreadedMarshaler(Il2CppIUnknown*, Il2CppIUnknown**)) (BuildId: dc393dbbfc4bdc03e4ee311273c70d0f9041b118)
25.           #02 pc 00000000007cd104  /data/app/com.company.companyunityapp-AdSCx8mhwAe1p8LXuqaLhA==/lib/arm64/libil2cpp.so (GetGenericParameterFromIndexInternal(int)+152) (BuildId: dc393dbbfc4bdc03e4ee311273c70d0f9041b118)
26.           #03 pc 00000000007c8824  /data/app/com.company.companyunityapp-AdSCx8mhwAe1p8LXuqaLhA==/lib/arm64/libil2cpp.so (InitializeGenericParameterHandle(Il2CppType*)+24) (BuildId: dc393dbbfc4bdc03e4ee311273c70d0f9041b118)
27.           #04 pc 00000000007c87b8  /data/app/com.company.companyunityapp-AdSCx8mhwAe1p8LXuqaLhA==/lib/arm64/libil2cpp.so (ProcessIl2CppTypeDefinitions(void (*)(Il2CppType*), void (*)(Il2CppType*))+292) (BuildId: dc393dbbfc4bdc03e4ee311273c70d0f9041b118)
28.           #05 pc 00000000007c8490  /data/app/com.company.companyunityapp-AdSCx8mhwAe1p8LXuqaLhA==/lib/arm64/libil2cpp.so (il2cpp::vm::GlobalMetadata::Initialize(int*, int*)+504) (BuildId: dc393dbbfc4bdc03e4ee311273c70d0f9041b118)
29.           #06 pc 00000000007d3534  /data/app/com.company.companyunityapp-AdSCx8mhwAe1p8LXuqaLhA==/lib/arm64/libil2cpp.so (il2cpp::vm::MetadataCache::Initialize()+64) (BuildId: dc393dbbfc4bdc03e4ee311273c70d0f9041b118)
30.           #07 pc 00000000007b74ec  /data/app/com.company.companyunityapp-AdSCx8mhwAe1p8LXuqaLhA==/lib/arm64/libil2cpp.so (il2cpp::vm::Runtime::Init(char const*)+412) (BuildId: dc393dbbfc4bdc03e4ee311273c70d0f9041b118)
31.           #08 pc 000000000076070c  /data/app/com.company.companyunityapp-AdSCx8mhwAe1p8LXuqaLhA==/lib/arm64/libil2cpp.so (il2cpp_init+44) (BuildId: dc393dbbfc4bdc03e4ee311273c70d0f9041b118)
32.           #09 pc 0000000000632404  /data/app/com.company.companyunityapp-AdSCx8mhwAe1p8LXuqaLhA==/lib/arm64/libunity.so (BuildId: a4066277acf9d678d139323c41d7c77750c5db31)
33.           #10 pc 00000000006a242c  /data/app/com.company.companyunityapp-AdSCx8mhwAe1p8LXuqaLhA==/lib/arm64/libunity.so (BuildId: a4066277acf9d678d139323c41d7c77750c5db31)
34.           #11 pc 00000000006a2ff0  /data/app/com.company.companyunityapp-AdSCx8mhwAe1p8LXuqaLhA==/lib/arm64/libunity.so (BuildId: a4066277acf9d678d139323c41d7c77750c5db31)
35.           #12 pc 00000000006b875c  /data/app/com.company.companyunityapp-AdSCx8mhwAe1p8LXuqaLhA==/lib/arm64/libunity.so (BuildId: a4066277acf9d678d139323c41d7c77750c5db31)
36.           #13 pc 000000000013f350  /apex/com.android.runtime/lib64/libart.so (art_quick_generic_jni_trampoline+144) (BuildId: d700c52998d7d76cb39e2001d670e654)
37. E/AndroidRuntime:       #14 pc 0000000000136334  /apex/com.android.runtime/lib64/libart.so (art_quick_invoke_stub+548) (BuildId: d700c52998d7d76cb39e2001d670e654)
38.           #15 pc 0000000000144fec  /apex/com.android.runtime/lib64/libart.so (art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*)+244) (BuildId: d700c52998d7d76cb39e2001d670e654)
39.           #16 pc 00000000002e2928  /apex/com.android.runtime/lib64/libart.so (art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, art::ShadowFrame*, unsigned short, art::JValue*)+384) (BuildId: d700c52998d7d76cb39e2001d670e654)
40.           #17 pc 00000000002ddb88  /apex/com.android.runtime/lib64/libart.so (bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*)+892) (BuildId: d700c52998d7d76cb39e2001d670e654)
41.           #18 pc 00000000005a2100  /apex/com.android.runtime/lib64/libart.so (MterpInvokeDirect+424) (BuildId: d700c52998d7d76cb39e2001d670e654)
42.           #19 pc 0000000000130914  /apex/com.android.runtime/lib64/libart.so (mterp_op_invoke_direct+20) (BuildId: d700c52998d7d76cb39e2001d670e654)
43.           #20 pc 00000000005a2b48  /apex/com.android.runtime/lib64/libart.so (MterpInvokeStatic+1040) (BuildId: d700c52998d7d76cb39e2001d670e654)
44.           #21 pc 0000000000130994  /apex/com.android.runtime/lib64/libart.so (mterp_op_invoke_static+20) (BuildId: d700c52998d7d76cb39e2001d670e654)
45.           #22 pc 00000000005a18b8  /apex/com.android.runtime/lib64/libart.so (MterpInvokeInterface+1788) (BuildId: d700c52998d7d76cb39e2001d670e654)
46.           #23 pc 0000000000130a14  /apex/com.android.runtime/lib64/libart.so (mterp_op_invoke_interface+20) (BuildId: d700c52998d7d76cb39e2001d670e654)
47.           #24 pc 00000000005a0098  /apex/com.android.runtime/lib64/libart.so (MterpInvokeVirtual+1352) (BuildId: d700c52998d7d76cb39e2001d670e654)
48.           #25 pc 0000000000130814  /apex/com.android.runtime/lib64/libart.so (mterp_op_invoke_virtual+20) (BuildId: d700c52998d7d76cb39e2001d670e654)
49.           #26 pc 00000000005a2b48  /apex/com.android.runtime/lib64/libart.so (MterpInvokeStatic+1040) (BuildId: d700c52998d7d76cb39e2001d670e654)
50.           #27 pc 0000000000130994  /apex/com.android.runtime/lib64/libart.so (mterp_op_invoke_static+20) (BuildId: d700c52998d7d76cb39e2001d670e654)
51.           #28 pc 00000000002b3c3c  /apex/com.android.runtime/lib64/libart.so (art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame&, art::JValue, bool, bool) (.llvm.18044833378915231953)+240) (BuildId: d700c52998d7d76cb39e2001d670e654)
52.           #29 pc 0000000000591340  /apex/com.android.runtime/lib64/libart.so (artQuickToInterpreterBridge+1032) (BuildId: d700c52998d7d76cb39e2001d670e654)
53.           #30 pc 000000000013f468  /apex/com.android.runtime/lib64/libart.so (art_quick_to_interpreter_bridge+88) (BuildId: d700c52998d7d76cb39e2001d670e654)
54.           #31 pc 0000000000136334  /apex/com.android.runtime/lib64/libart.so (art_quick_invoke_stub+548) (BuildId: d700c52998d7d76cb39e2001d670e654)
55.           #32 pc 0000000000144fec  /apex/com.android.runtime/lib64/libart.so (art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*)+244) (BuildId: d700c52998d7d76cb39e2001d670e654)
56.           #33 pc 00000000004afd44  /apex/com.android.runtime/lib64/libart.so (art::(anonymous namespace)::InvokeWithArgArray(art::ScopedObjectAccessAlreadyRunnable const&, art::ArtMethod*, art::(anonymous namespace)::ArgArray*, art::JValue*, char const*)+104) (BuildId: d700c52998d7d76cb39e2001d670e654)
57.           #34 pc 00000000004b0e58  /apex/com.android.runtime/lib64/libart.so (art::InvokeVirtualOrInterfaceWithJValues(art::ScopedObjectAccessAlreadyRunnable const&, _jobject*, _jmethodID*, jvalue const*)+416) (BuildId: d700c52998d7d76cb39e2001d670e654)
58.           #35 pc 00000000004f1814  /apex/com.android.runtime/lib64/libart.so (art::Thread::CreateCallback(void*)+1176) (BuildId: d700c52998d7d76cb39e2001d670e654)
59. E/AndroidRuntime:       #36 pc 00000000000e6890  /apex/com.android.runtime/lib64/bionic/libc.so (__pthread_start(void*)+36) (BuildId: e55e6e4c631509598633769798683023)
60.           #37 pc 0000000000084b6c  /apex/com.android.runtime/lib64/bionic/libc.so (__start_thread+64) (BuildId: e55e6e4c631509598633769798683023)
61.    
62.         at libc.abort(abort:160)
63.         at libil2cpp.il2cpp::os::COM::CreateFreeThreadedMarshaler(Il2CppIUnknown*, Il2CppIUnknown**)(CreateFreeThreadedMarshaler:0)
64.         at libil2cpp.GetGenericParameterFromIndexInternal(int)(GetGenericParameterFromIndexInternal:152)
65.         at libil2cpp.InitializeGenericParameterHandle(Il2CppType*)(InitializeGenericParameterHandle:24)
66.         at libil2cpp.ProcessIl2CppTypeDefinitions(void (*)(Il2CppType*), void (*)(Il2CppType*))(ProcessIl2CppTypeDefinitions:292)
67.         at libil2cpp.il2cpp::vm::GlobalMetadata::Initialize(int*, int*)(Initialize:504)
68.         at libil2cpp.il2cpp::vm::MetadataCache::Initialize()(Initialize:64)
69.         at libil2cpp.il2cpp::vm::Runtime::Init(char const*)(Init:412)
70.         at libil2cpp.il2cpp_init(il2cpp_init:44)
71.         at libunity.0x632404(Native Method)
72.         at libunity.0x6a242c(Native Method)
73.         at libunity.0x6a2ff0(Native Method)
74.         at libunity.0x6b875c(Native Method)
75.         at libart.art_quick_generic_jni_trampoline(art_quick_generic_jni_trampoline:144)
76.         at libart.art_quick_invoke_stub(art_quick_invoke_stub:548)
77.         at libart.art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*)(Invoke:244)
78.         at libart.art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, art::ShadowFrame*, unsigned short, art::JValue*)(ArtInterpreterToCompiledCodeBridge:384)
79.         at libart.bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*)(DoCall<false, false>:892)
80.         at libart.MterpInvokeDirect(MterpInvokeDirect:424)
81.         at libart.mterp_op_invoke_direct(mterp_op_invoke_direct:20)
82.         at libart.MterpInvokeStatic(MterpInvokeStatic:1040)
83.         at libart.mterp_op_invoke_static(mterp_op_invoke_static:20)
84.         at libart.MterpInvokeInterface(MterpInvokeInterface:1788)
85.         at libart.mterp_op_invoke_interface(mterp_op_invoke_interface:20)
86.         at libart.MterpInvokeVirtual(MterpInvokeVirtual:1352)
87.         at libart.mterp_op_invoke_virtual(mterp_op_invoke_virtual:20)
88.         at libart.MterpInvokeStatic(MterpInvokeStatic:1040)
89.         at libart.mterp_op_invoke_static(mterp_op_invoke_static:20)
90.         at libart.art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame&, art::JValue, bool, bool) (.llvm.18044833378915231953)(Execute:240)
91.         at libart.artQuickToInterpreterBridge(artQuickToInterpreterBridge:1032)
92.         at libart.art_quick_to_interpreter_bridge(art_quick_to_interpreter_bridge:88)
93.         at libart.art_quick_invoke_stub(art_quick_invoke_stub:548)
94. E/CRASH: Forwarding signal 6
95. A/libc: Fatal signal 6 (SIGABRT), code -1 (SI_QUEUE) in tid 7651 (UnityMain), pid 6823 (u.companyunityapp)

libil2cpp.il2cpp:s::COM::CreateFreeThreadedMarshaler seems to be where it fails.

 

Hi Josh,

Do you know why it's even calling in here? Like what is the root cause, so I can prevent it from happening?

 

Could I write some C++ code in the il2cpp, which could narrow it down better? Cause the Unity code is quite simple (Using ARFoundation, but nothing fancy), and I don't think I have any ComImport attributes anywhere in there.

There seems to be a ComImportAttribute in some of the generated il2cpp code - Could that be the culprit? It's specifically inside the

const Il2CppType* const  g_Il2CppTypeTable[10254]

in "il2cppTypeDefinitions.c" - But I can't find it anywhere in my code.

How would I best go around figuring this out? I honestly feel I'm on deep water looking into this.

 

I'm exporting the Android project, and I have the ill2cpp generated code there, which I'm running through. I can change this generated cpp code, since android exported projects compiles this cpp. So I was thinking, maybe I could write out all the types that it runs through. However, I'm not very well versed in the Il2CppType type, and what I can pull from it, or how to write out on Android using c++. I'm currently trying

__android_log_print(ANDROID_LOG_INFO, "IL2CPPDebug", "%d", type->type );

in the

static void InitializeGenericParameterHandle(Il2CppType* type)

function. Doing this, I get that the type->type is 30 - Is there anything else I could get from the Type, which might give a better indication of which type I'm looking at?

 

Unfortunately trying to get the class provides me with another crash:

Code (CSharp):

1. at libil2cpp.il2cpp::vm::GlobalMetadata::GetGenericParameterInfo(___Il2CppMetadataGenericParameterHandle const*)(GetGenericParameterInfo:28)
2.         at libil2cpp.il2cpp::vm::MetadataCache::GetGenericParameterInfo(___Il2CppMetadataGenericParameterHandle const*)(GetGenericParameterInfo:20)
3.         at libil2cpp.il2cpp::vm::Class::FromGenericParameter(___Il2CppMetadataGenericParameterHandle const*)(FromGenericParameter:304)
4.         at libil2cpp.il2cpp::vm::Class::FromIl2CppType(Il2CppType const*, bool)(FromIl2CppType:1532)
5.         at libil2cpp.InitializeGenericParameterHandle(Il2CppType*)(InitializeGenericParameterHandle:68)
6.         at libil2cpp.ProcessIl2CppTypeDefinitions(void (*)(Il2CppType*), void (*)(Il2CppType*))(ProcessIl2CppTypeDefinitions:292)
7.         at libil2cpp.il2cpp::vm::GlobalMetadata::Initialize(int*, int*)(Initialize:504)
8.         at libil2cpp.il2cpp::vm::MetadataCache::Initialize()(Initialize:64)
9.         at libil2cpp.il2cpp::vm::Runtime::Init(char const*)(Init:412)
10.         at libil2cpp.il2cpp_init(il2cpp_init:44)
11.         at libunity.0x632404(Native Method)
12.         at libunity.0x6a242c(Native Method)
13.         at libunity.0x6a2ff0(Native Method)
14.         at libunity.0x6b875c(Native Method)
15.         at libart.art_quick_generic_jni_trampoline(art_quick_generic_jni_trampoline:144)
16.         at libart.art_quick_invoke_stub(art_quick_invoke_stub:548)
17.         at libart.art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*)(Invoke:244)
18.         at libart.art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, art::ShadowFrame*, unsigned short, art::JValue*)(ArtInterpreterToCompiledCodeBridge:384)
19.         at libart.bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*)(DoCall<false, false>:892)
20.         at libart.MterpInvokeDirect(MterpInvokeDirect:424)
21.         at libart.mterp_op_invoke_direct(mterp_op_invoke_direct:20)
22.         at libart.MterpInvokeStatic(MterpInvokeStatic:1040)
23.         at libart.mterp_op_invoke_static(mterp_op_invoke_static:20)
24.         at libart.MterpInvokeInterface(MterpInvokeInterface:1788)
25.         at libart.mterp_op_invoke_interface(mterp_op_invoke_interface:20)
26.         at libart.MterpInvokeVirtual(MterpInvokeVirtual:1352)
27.         at libart.mterp_op_invoke_virtual(mterp_op_invoke_virtual:20)
28.         at libart.MterpInvokeStatic(MterpInvokeStatic:1040)
29.         at libart.mterp_op_invoke_static(mterp_op_invoke_static:20)
30.         at libart.art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame&, art::JValue, bool, bool) (.llvm.18044833378915231953)(Execute:240)
31.         at libart.artQuickToInterpreterBridge(artQuickToInterpreterBridge:1032)
32.         at libart.art_quick_to_interpreter_bridge(art_quick_to_interpreter_bridge:88)

So it seems this happens so early, that the type isn't hooked up to a class yet? Where do I get more info then?

 

I couldn't get anything from Class::FromIl2CppType as it seems to get it's data from GlobalMetadata, which hasn't run through the types yet it seems.

However, trying to write out just something from the 'ProcessIl2CppTypeDefinitions(Il2CppTypeUpdater updateTypeDef, Il2CppTypeUpdater updateGenericParam)' provides me with only 1 item being looked at before it crashes - Which is a generic type (Or at least of type 'IL2CPP_TYPE_MVAR').

What I don't understand is how 'il2cpp:s::COM::CreateFreeThreadedMarshaler' is called from
'GetGenericParameterFromIndexInternal'. Like when does it actually call this:

Code (CSharp):

1. static Il2CppMetadataGenericParameterHandle GetGenericParameterFromIndexInternal(GenericParameterIndex index)
2. {
3.     if (index == kGenericParameterIndexInvalid)
4.         return NULL;
5.  
6.     IL2CPP_ASSERT(index >= 0 && static_cast<uint32_t>(index) <= s_GlobalMetadataHeader->genericParametersCount / sizeof(Il2CppGenericParameter));
7.     const Il2CppGenericParameter* genericParameters = (const Il2CppGenericParameter*)((const char*)s_GlobalMetadata + s_GlobalMetadataHeader->genericParametersOffset);
8.     return reinterpret_cast<Il2CppMetadataGenericParameterHandle>(genericParameters + index);
9. }

Is the stacktrace actually correct?

 

So looking into the data used, I see an static_cast<uint32_t>(index) = 681, s_GlobalMetadataHeader->genericParametersCount = 7536 and sizeof(Il2CppGenericParameter) = 16, meaning the assert is failing, as 7536/16 = 471, and 681 is larger. Could this have something to do with that is going wrong?

 

I'm trying to use debug code, however, as I've also reported in the bug report linked earlier ( 1321798 ), I'm running this through Xamarin's Android Library binding first, and then through a Xamarin Forms project. And I don't know if this does anything weird to be honest.

If I comment out the asserts related to this, I do not crash in those areas, but I then go a crash in this area:

Code (CSharp):

1. [CRASH] *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
2. [CRASH] Version '2021.1.0f1 (61a549675243)', Build type 'Release', Scripting Backend 'il2cpp', CPU 'arm64-v8a'
3. [CRASH] Build fingerprint: 'OnePlus/OnePlus5/OnePlus5:10/QKQ1.191014.012/2010292059:user/release-keys'
4. [CRASH] Revision: '0'
5. [CRASH] ABI: 'arm64'
6. [CRASH] Timestamp: 2021-03-30 16:44:29+0200
7. [CRASH] pid: 7325, tid: 10449, name: UnityMain  >>> com.vizgu.vizguunityapp <<<
8. [CRASH] uid: 14312
9. [CRASH] signal 11 (SIGSEGV), code 2 (SEGV_ACCERR), fault addr 0x6fe02a6000
10. [CRASH]     x0  0000006fe02a6000  x1  00000000001f7b9c  x2  0000000000000d19  x3  0000006f2fd81b00
11. [CRASH]     x4  00000070013bbed8  x5  00000070013bbfd8  x6  000000706e62d340  x7  0000006f2fd79600
12. [CRASH]     x8  0000006fe02a2b9c  x9  0000000000003464  x10 0000000000000004  x11 000000706b37f708
13. [CRASH]     x12 000000706b37dad0  x13 0000000000000387  x14 0000000000000001  x15 8f4478c05e762530
14. [CRASH]     x16 0000006fefd14330  x17 00000070fec9d380  x18 0000007000d24000  x19 0000006fee5ba6e4
15. [CRASH]     x20 00000070013bc6a0  x21 00000070013bd030  x22 00000070013bd560  x23 00000070013bf020
16. [CRASH]     x24 00000070013bd560  x25 0000000000000001  x26 00000070013bd120  x27 00000070013bc790
17. [CRASH]     x28 00000070013bcbd0  x29 00000070013bc050
18. [CRASH]     sp  00000070013bbf90  lr  0000006fee673614  pc  0000006fee673614
19. [CRASH]
20. [CRASH] backtrace:
21. [CRASH]       #00 pc 000000000081c614  /data/app/com.vizgu.vizguunityapp-v_0OeaCBxy8oVWyiH0l9IQ==/lib/arm64/libil2cpp.so (il2cpp::vm::GlobalMetadata::InitializeUnresolvedSignatureTable(Il2CppHashMap<il2cpp::metadata::Il2CppSignature const, void (*)(), il2cpp::metadata::Il2CppSignatureHash, il2cpp::metadata::Il2CppSignatureCompare, std::__ndk1::allocator<std::__ndk1::pair<KeyWrapper<il2cpp::metadata::Il2CppSignature const> const, void (*)()> > >&)+256) (BuildId: f472bcc4d4df70dec465383a523d530a81c4b2aa)
22. [CRASH]       #01 pc 0000000000826ae8  /data/app/com.vizgu.vizguunityapp-v_0OeaCBxy8oVWyiH0l9IQ==/lib/arm64/libil2cpp.so (il2cpp::vm::MetadataCache::InitializeUnresolvedSignatureTable()+88) (BuildId: f472bcc4d4df70dec465383a523d530a81c4b2aa)
23. [CRASH]       #02 pc 00000000008267a4  /data/app/com.vizgu.vizguunityapp-v_0OeaCBxy8oVWyiH0l9IQ==/lib/arm64/libil2cpp.so (il2cpp::vm::MetadataCache::Initialize()+1056) (BuildId: f472bcc4d4df70dec465383a523d530a81c4b2aa)
24. [CRASH]       #03 pc 000000000080a548  /data/app/com.vizgu.vizguunityapp-v_0OeaCBxy8oVWyiH0l9IQ==/lib/arm64/libil2cpp.so (il2cpp::vm::Runtime::Init(char const*)+412) (BuildId: f472bcc4d4df70dec465383a523d530a81c4b2aa)
25. [CRASH]       #04 pc 000000000076070c  /data/app/com.vizgu.vizguunityapp-v_0OeaCBxy8oVWyiH0l9IQ==/lib/arm64/libil2cpp.so (il2cpp_init+44) (BuildId: f472bcc4d4df70dec465383a523d530a81c4b2aa)
26. [CRASH]       #05 pc 0000000000632404  /data/app/com.vizgu.vizguunityapp-v_0OeaCBxy8oVWyiH0l9IQ==/lib/arm64/libunity.so (BuildId: a4066277acf9d678d139323c41d7c77750c5db31)
27. [CRASH]       #06 pc 00000000006a242c  /data/app/com.vizgu.vizguunityapp-v_0OeaCBxy8oVWyiH0l9IQ==/lib/arm64/libunity.so (BuildId: a4066277acf9d678d139323c41d7c77750c5db31)
28. [CRASH]       #07 pc 00000000006a2ff0  /data/app/com.vizgu.vizguunityapp-v_0OeaCBxy8oVWyiH0l9IQ==/lib/arm64/libunity.so (BuildId: a4066277acf9d678d139323c41d7c77750c5db31)
29. [CRASH]       #08 pc 00000000006b875c  /data/app/com.vizgu.vizguunityapp-v_0OeaCBxy8oVWyiH0l9IQ==/lib/arm64/libunity.so (BuildId: a4066277acf9d678d139323c41d7c77750c5db31)
30. [CRASH]       #09 pc 000000000013f350  /apex/com.android.runtime/lib64/libart.so (art_quick_generic_jni_trampoline+144) (BuildId: d700c52998d7d76cb39e2001d670e654)
31. [CRASH]       #10 pc 0000000000136334  /apex/com.android.runtime/lib64/libart.so (art_quick_invoke_stub+548) (BuildId: d700c52998d7d76cb39e2001d670e654)
32. [CRASH]       #11 pc 0000000000144fec  /apex/com.android.runtime/lib64/libart.so (art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*)+244) (BuildId: d700c52998d7d76cb39e2001d670e654)
33. [CRASH]       #12 pc 00000000002e2928  /apex/com.android.runtime/lib64/libart.so (art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, art::ShadowFrame*, unsigned short, art::JValue*)+384) (BuildId: d700c52998d7d76cb39e2001d670e654)
34. [CRASH]       #13 pc 00000000002ddb88  /apex/com.android.runtime/lib64/libart.so (bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*)+892) (BuildId: d700c52998d7d76cb39e2001d670e654)
35. [CRASH]       #14 pc 00000000005a2100  /apex/com.android.runtime/lib64/libart.so (MterpInvokeDirect+424) (BuildId: d700c52998d7d76cb39e2001d670e654)
36. [CRASH]       #15 pc 0000000000130914  /apex/com.android.runtime/lib64/libart.so (mterp_op_invoke_direct+20) (BuildId: d700c52998d7d76cb39e2001d670e654)
37. [CRASH]       #16 pc 00000000005a2b48  /apex/com.android.runtime/lib64/libart.so (MterpInvokeStatic+1040) (BuildId: d700c52998d7d76cb39e2001d670e654)
38. [CRASH]       #17 pc 0000000000130994  /apex/com.android.runtime/lib64/libart.so (mterp_op_invoke_static+20) (BuildId: d700c52998d7d76cb39e2001d670e654)
39. [CRASH]       #18 pc 00000000005a18b8  /apex/com.android.runtime/lib64/libart.so (MterpInvokeInterface+1788) (BuildId: d700c52998d7d76cb39e2001d670e654)
40. [CRASH]       #19 pc 0000000000130a14  /apex/com.android.runtime/lib64/libart.so (mterp_op_invoke_interface+20) (BuildId: d700c52998d7d76cb39e2001d670e654)
41. [CRASH]       #20 pc 00000000005a0098  /apex/com.android.runtime/lib64/libart.so (MterpInvokeVirtual+1352) (BuildId: d700c52998d7d76cb39e2001d670e654)
42. [CRASH]       #21 pc 0000000000130814  /apex/com.android.runtime/lib64/libart.so (mterp_op_invoke_virtual+20) (BuildId: d700c52998d7d76cb39e2001d670e654)
43. [CRASH]       #22 pc 00000000005a2b48  /apex/com.android.runtime/lib64/libart.so (MterpInvokeStatic+1040) (BuildId: d700c52998d7d76cb39e2001d670e654)
44. [CRASH]       #23 pc 0000000000130994  /apex/com.android.runtime/lib64/libart.so (mterp_op_invoke_static+20) (BuildId: d700c52998d7d76cb39e2001d670e654)
45. [CRASH]       #24 pc 00000000002b3c3c  /apex/com.android.runtime/lib64/libart.so (art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame&, art::JValue, bool, bool) (.llvm.18044833378915231953)+240) (BuildId: d700c52998d7d76cb39e2001d670e654)
46. [CRASH]       #25 pc 0000000000591340  /apex/com.android.runtime/lib64/libart.so (artQuickToInterpreterBridge+1032) (BuildId: d700c52998d7d76cb39e2001d670e654)
47. [CRASH]       #26 pc 000000000013f468  /apex/com.android.runtime/lib64/libart.so (art_quick_to_interpreter_bridge+88) (BuildId: d700c52998d7d76cb39e2001d670e654)
48. [CRASH]       #27 pc 0000000000136334  /apex/com.android.runtime/lib64/libart.so (art_quick_invoke_stub+548) (BuildId: d700c52998d7d76cb39e2001d670e654)
49. [CRASH]       #28 pc 0000000000144fec  /apex/com.android.runtime/lib64/libart.so (art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*)+244) (BuildId: d700c52998d7d76cb39e2001d670e654)
50. [CRASH]       #29 pc 00000000004afd44  /apex/com.android.runtime/lib64/libart.so (art::(anonymous namespace)::InvokeWithArgArray(art::ScopedObjectAccessAlreadyRunnable const&, art::ArtMethod*, art::(anonymous namespace)::ArgArray*, art::JValue*, char const*)+104) (BuildId: d700c52998d7d76cb39e2001d670e654)
51. [CRASH]       #30 pc 00000000004b0e58  /apex/com.android.runtime/lib64/libart.so (art::InvokeVirtualOrInterfaceWithJValues(art::ScopedObjectAccessAlreadyRunnable const&, _jobject*, _jmethodID*, jvalue const*)+416) (BuildId: d700c52998d7d76cb39e2001d670e654)
52. [CRASH]       #31 pc 00000000004f1814  /apex/com.android.runtime/lib64/libart.so (art::Thread::CreateCallback(void*)+1176) (BuildId: d700c52998d7d76cb39e2001d670e654)
53. [CRASH]       #32 pc 00000000000e6890  /apex/com.android.runtime/lib64/bionic/libc.so (__pthread_start(void*)+36) (BuildId: e55e6e4c631509598633769798683023)
54. [CRASH]       #33 pc 0000000000084b6c  /apex/com.android.runtime/lib64/bionic/libc.so (__start_thread+64) (BuildId: e55e6e4c631509598633769798683023)

 

The bugreport has a full repro (in another version of Unity, but it should upgrade without any issues) and description on how to repro this issue. We're very close to launching our App, and this works on iOS, so I would really appreciate finding a solution soon. Is there anything I can help with, investigate or do to help?

 

I have not had a completely working version at any point in time on Android, no. When I build it in our actually project, I can make Unity start in a window, interact, send messages to unity, have it download an asset bundle and show it, and it will then crash after some time (randomly it seems), or when I remove focus from the window and do another 'large' task, as long as I'm debugging. If I'm not debugging, the app just crashes at random points it seems.
I've tried it in almost every Unity version back to the 2019 LTS. The same problem has persisted throughout in my tests, though there may have been different versions of the stack traces.

 

If there are any issues with the repro project, I'm available to help make it work, so we can figure this out.

 

Any news on this? I've updated the bug report with a video of how I reproduce the error (steps to build), but haven't heard anything since.

 

Still no news? Are there issues with reproducing the issue?

 

I see there was an issue reproducing the bug. I've replied to the issue, and hope that is what was missing in their setup to make it work. Are there any news about if that issue has been resolved?

 

Any news by now?

 

It's a week ago, I answered the QA about reproduction steps, where they had problems, still no news?

 

So it was reproduced and everything, but it's been several months now since then, and no news.
Is this being worked on at Unity? https://issuetracker.unity3d.com/is...code-2-segv-accerr-when-unity-is-used-as-uaal

 

@Pequeno We are also looking for setting this up with Unity. Could we contact you about this?

 

I don't have a fix for it, so I don't see any reason to contact me specifically. But do go vote on the issuetracker, so Unity can see this is a very used feature, and a serious issue.

 

Any news on this?

 

Are there any news on this by now, or did Unity go on vacation?

 

I am also having a problem with this. Eagerly awaiting news from the fine folk at Unity.

 

Bump - Is anything happening with this?

 

@JoshPeterson Here is the issuetracker: https://issuetracker.unity3d.com/is...code-2-segv-accerr-when-unity-is-used-as-uaal