Develop Reference

Unity Android app crashes after splash screen with Google Play Services for AR update (after April 11th 2020)

I'm working collaboratively on an Android app that uses AR Foundation. From one day to another (without making new builds) the app started to crash after the splash screen, every time. I'm working on my Huawei Mate 20 Pro, but my teammates use other Android phones (Samsung, Xiaomi and Motorola) and they continued to develop the app, and it works just fine for them. I pull their commits (which work for them), make no changes, and it keeps crashing on my phone. We are using Firebase so I have the info from Crashlytics, but I can't quiet understand it:
Unity version is 2019.4.8f1 LTS, and the Huawei phone runs on Android 10.
The complete crash log is:
Caused by java.lang.Error
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
Version '2019.4.8f1 (60781d942082)', Build type 'Release', Scripting Backend 'mono', CPU 'armeabi-v7a'
Build fingerprint: 'HUAWEI/LYA-L29/HWLYA:10:user/release-keys' Revision: '0' ABI: 'arm'
Timestamp: 2020-08-13 14:12:37-0300 pid: 3571, tid: 3777,
name: UnityMain >>> com.app.name <<<
uid: 10315 signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0
Cause: null pointer dereference r0 00000000 r1 00000000 r2 00000000 r3 00000000 r4 a965d490 r5 bd74a87c r6 80808080 r7 00000000 r8 be98f540 r9 00000000 r10 00000000 r11 b2f15f60 ip b2f4cc90 sp bd74a878 lr b2f1e859 pc 00000000
managed backtrace: #00 (wrapper managed-to-native)
UnityEngine.XR.ARCore.ARCoreSessionSubsystem/NativeApi:UnityARCore_session_update (UnityEngine.ScreenOrientation,UnityEngine.Vector2Int,intptr,UnityEngine.XR.ARSubsystems.Feature) #01
UnityEngine.XR.ARCore.ARCoreSessionSubsystem/ARCoreProvider:Update (UnityEngine.XR.ARSubsystems.XRSessionUpdateParams,UnityEngine.XR.ARSubsystems.Configuration) <0xef> #02
UnityEngine.XR.ARSubsystems.XRSessionSubsystem:Update (UnityEngine.XR.ARSubsystems.XRSessionUpdateParams) <0x1d3> #03
UnityEngine.XR.ARFoundation.ARSession:Update () <0x157> #04
(wrapper runtime-invoke) object:runtime_invoke_void__this__ (object,intptr,intptr,intptr)
UPDATE
I've managed to narrow down the crash to the following lines of code, inside the Update of ARSession script:
void Update()
{
if (subsystem?.running == true)
{
m_TrackingMode = subsystem.requestedTrackingMode.ToTrackingMode();
if (subsystem.matchFrameRateEnabled)
{
Application.targetFrameRate = subsystem.frameRate;
QualitySettings.vSyncCount = 0;
}
//subsystem.Update(new XRSessionUpdateParams
//{
// screenOrientation = Screen.orientation,
// screenDimensions = new Vector2Int(Screen.width, Screen.height)
//});
switch (subsystem.trackingState)
{
case TrackingState.None:
case TrackingState.Limited:
state = ARSessionState.SessionInitializing;
break;
case TrackingState.Tracking:
state = ARSessionState.SessionTracking;
break;
}
}
}
With those commented lines, the app starts but the camera won't work. If I uncomment them, it crashes. I know the problem is there because I placed a:
UnityEngine.Handheld.Vibrate();
Before and after, and the phone only vibrates once.

I updated the question's title because the problem is caused by an issue in the update of Google Play Services for AR. I managed to make my app work by manually downloading an older version of Google Play Services for AR, following the instructions here.
You can track the issue I opened in the ARCore Unity SDK repo here

Android FreeRDP SIGSEGV crash on samsung device

We have integrated FreeRDP in android application. Some of the devices like Samsung, We are getting SIGSEGV & SIGABRT crashes randomly. These are not reproducible issues and logs are not showing any specific method that causing the issue.
I am posting some logs here. Could you please let me know if anyone has any idea about this?
Crash reason: SIGSEGV
Crash address: 0x0
Process uptime: not available
Thread 195 (crashed)
0 libfreerdp2.so + 0x20ef0
r0 = 0x00000000 r1 = 0x00000000 r2 = 0x00000000 r3 = 0x00000000
r4 = 0x8401c380 r5 = 0xb0800f6d r6 = 0xbb7fc920 r7 = 0x00000078
r8 = 0x09f7b70c r9 = 0x09f7b6e0 r10 = 0x8ed55cc8 r12 = 0xb0842600
fp = 0xbb7fc7ec sp = 0xbb7fc7d8 lr = 0x8ebde450 pc = 0x8ebd8ef0
Found by: given as instruction pointer in context
1 libc.so + 0x47f6b
sp = 0xbb7fc7e4 pc = 0xb0800f6d
Found by: stack scanning

Android kernel dump

I am busy in the kernel in Android (which is at least close to Linux).
I understand output of dump_stack() that I sometimes use to trace things. But when there is a kernel error, the dump also appears but there is an extra line Exception stack between the dump.
For curiosity I added a function that accesses NULL. When the resulting NULL dereference error is raised, this is a part of the dump I get:
[<c0055f84>] (unwind_backtrace+0x0/0x138) from [<c0693008>] (panic+0x74/0x194)
[<c0693008>] (panic+0x74/0x194) from [<c0052470>] (die+0x218/0x284)
[<c0052470>] (die+0x218/0x284) from [<c0692df8>] (__do_kernel_fault.part.3+0x60/0x84)
[<c0692df8>] (__do_kernel_fault.part.3+0x60/0x84) from [<c0059d30>] (do_page_fault+0x2cc/0x334)
[<c0059d30>] (do_page_fault+0x2cc/0x334) from [<c0048410>] (do_DataAbort+0x34/0x9c)
[<c0048410>] (do_DataAbort+0x34/0x9c) from [<c004e2d0>] (__dabt_svc+0x70/0xa0)
Exception stack(0xe6901ed8 to 0xe6901f20)
1ec0: 00000001 00000003
1ee0: c081ddf8 00000004 410afc4c 00000005 00000004 c09c9218 e63f6800 e6900000
1f00: 00000000 400a5404 c081ddfb e6901f20 c0321ad0 c0321ad4 20000013 ffffffff
[<c004e2d0>] (__dabt_svc+0x70/0xa0) from [<c0321ad4>] (access_null+0x38/0x30c)
[<c0321ad4>] (access_null+0x38/0x30c) from [<c017692c>] (function_that_calls_access_null+0x50/0x94)
access_null() does the evil access. But the exception stack is not at this function.
What's happening here? What can I do with data in the exception stack section?

What process should be used to compress SKMaps.zip file for use in Skobbler powered app?

I'm currently using the Skobbler SDK in an Android app to handle mapping and turn-by-turn direction tasks. One issue that came up was the desire to change to frequency at which audio advice is issued from the SDK so that we don't have too many instructions being fired off one after the other.
I found this answer to another question which explains the need to modify an advice_places.adv file which I was able to find within the SDK provided SKMaps.zip file.
The issue I'm experiencing seems to be related to how I re-archive the zip file once I've finished making changes to the advice_places.adv file. I'm working on a Mac and it seems that regardless of if I use the built-in "Compress..." context menu option or if I perform a zip operation via the command line similar to:
zip -vr SKMaps.zip SKMaps/ -x "*.DS_Store"; chmod +x SKMaps.zip
I still can't seem to load my app without it crashing during the Skobbler SDK map initialization process.
I've narrowed down the issue to it being a zip/unzip related issue since I can recreate the crash even if I don't modify any of the contents of the SKMaps.zip but only unzip and then rezip.
Here is a dump of the logs that I see when my app crashes.
SKMaps D SKMapViewHolder----#onResume
D SKMapSurfaceView----#onResume
D SKMapSurfaceView----#onResume preserve GL context is TRUE
WindowManager V Adding window Window{278f3a43 u0 com.company.mymapapp/com.company.mymapapp.activities.MainActivity} at 23 of 32 (before Window{246caca8 u0 SurfaceView})
V Adding window Window{1b0d49f9 u0 SurfaceView} at 23 of 33 (before Window{278f3a43 u0 com.company.mymapapp/com.company.mymapapp.activities.MainActivity})
SKMaps D MapRenderer----#onSurfaceCreated
D MapRenderer----#onSurfaceCreated LinInitialized = true
D MapRenderer---- #initGLView
SkobblerNG D set density JNI - before NG_SetScreenScale
D set density JNI - after NG_SetScreenScale
libc F Fatal signal 11 (SIGSEGV), code 1, fault addr 0x4 in tid 24828 (GLThread 44711)
btif_config_util D btif_config_save_file(L188): in file name:/data/misc/bluedroid/bt_config.new
DEBUG I *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
I Build fingerprint: 'google/shamu/shamu:5.1/LMY47I/1767468:user/release-keys'
I Revision: '33696'
I ABI: 'arm'
I pid: 24493, tid: 24828, name: GLThread 44711 >>> com.company.mymapapp <<<
I signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x4
I r0 00000001 r1 00000000 r2 00000001 r3 00000029
I r4 a0edfcd0 r5 00000000 r6 a0edfc00 r7 a044a9b0
I r8 00000000 r9 a044a9d8 sl 00000001 fp 13250820
I ip 80000000 sp a044a978 lr 9e8d5efd pc 9e8d5f22 cpsr 600f0030
I backtrace:
I #00 pc 0018ef22 /data/app/com.company.mymapapp-1/lib/arm/libngnative.so (EarthSphere::SetupTextureInBufferFromTex(SK_WTEXTURE_ID&)+113)
I #01 pc 0018ff23 /data/app/com.company.mymapapp-1/lib/arm/libngnative.so (EarthSphere::Init(unsigned int, unsigned int)+190)
I #02 pc 0011dc7d /data/app/com.company.mymapapp-1/lib/arm/libngnative.so (MapRenderer::InitializeGlobeAndWorldTextures()+116)
I #03 pc 000fe1bd /data/app/com.company.mymapapp-1/lib/arm/libngnative.so (NG_InitializeGL+52)
I #04 pc 000e7fcf /data/app/com.company.mymapapp-1/lib/arm/libngnative.so (Java_com_skobbler_ngx_map_MapRenderer_initgl+14)
I #05 pc 0064b963 /data/dalvik-cache/arm/data#app#com.company.mymapapp-1#base.apk#classes.dex
I Tombstone written to: /data/tombstones/tombstone_07
ActivityManager W Force finishing activity 1 com.company.mymapapp/.activities.MainActivity
BootReceiver I Copying /data/tombstones/tombstone_07 to DropBox (SYSTEM_TOMBSTONE)
JavaBinder E !!! FAILED BINDER TRANSACTION !!!
WindowState I WIN DEATH: Window{23adbb9a u0 SurfaceView}
NetlinkEvent E NetlinkEvent::FindParam(): Parameter 'INTERFACE' not found
E NetlinkEvent::FindParam(): Parameter 'TIME_NS' not found
NetdConnector E Error handling '613 IfaceClass active (null)': java.lang.NumberFormatException: Invalid int: "(null)"
WindowState I WIN DEATH: Window{246caca8 u0 SurfaceView}
I WIN DEATH: Window{259e40bc u0 com.company.mymapapp/com.company.mymapapp.activities.IntroActivity}
I WIN DEATH: Window{278f3a43 u0 com.company.mymapapp/com.company.mymapapp.activities.MainActivity}
I WIN DEATH: Window{1b0d49f9 u0 SurfaceView}
Zygote I Process 24493 exited due to signal (11)
ActivityManager W Exception thrown during pause
W android.os.TransactionTooLargeException
W at android.os.BinderProxy.transactNative(Native Method)
W at android.os.BinderProxy.transact(Binder.java:496)
W at android.app.ApplicationThreadProxy.schedulePauseActivity(ApplicationThreadNative.java:704)
W at com.android.server.am.ActivityStack.startPausingLocked(ActivityStack.java:825)
W at com.android.server.am.ActivityStack.finishActivityLocked(ActivityStack.java:2726)
W at com.android.server.am.ActivityStack.finishTopRunningActivityLocked(ActivityStack.java:2583)
W at com.android.server.am.ActivityStackSupervisor.finishTopRunningActivityLocked(ActivityStackSupervisor.java:2497)
W at com.android.server.am.ActivityManagerService.handleAppCrashLocked(ActivityManagerService.java:11500)
W at com.android.server.am.ActivityManagerService.makeAppCrashingLocked(ActivityManagerService.java:11397)
W at com.android.server.am.ActivityManagerService.crashApplication(ActivityManagerService.java:12081)
W at com.android.server.am.ActivityManagerService.handleApplicationCrashInner(ActivityManagerService.java:11592)
W at com.android.server.am.NativeCrashListener$NativeCrashReporter.run(NativeCrashListener.java:86)
lowmemorykiller E Error opening /proc/24493/oom_score_adj; errno=2
Process com.company.mymapapp (PID: 24493) ended
If anyone has any information as to the preferred method of generating a zip file on a Mac for use with the Skobbler SDK in this fashion, I would appreciate any guidance.
Thank you!
Keith

I've had the same issue (I did the zipping/unzipping manually) - I did not get to the bottom of the problem but the trick is not to zip the SkMaps folder (that you get when unzipping) but the content of that folder (all the subfolders) in an archive named SkMaps.zip (go in the unpacked folder, SKMaps, select all the folder and compress them to an SKMaps.zip.
I'm not sure if this is Mac specific or zip specific. The SDK expects that when unzipping SKMaps.zip it will find a number of folders, but when you compress the SKMaps folder directly you end up with an archive that has as root folder a folder named SkMaps (which is wrong) and only inside that folder the correct folder structure.

Unity Carboard SDK Crash

I make an update including all Cardboard SDK feature into my game https://play.google.com/store/apps/details?id=com.oriongames.spaceshooter
BUT, I found that some Android device (not all, since my Note 2 and editor mode is working perfectly) Crash instantly after the Unity logo.
Here is the repport :
java.lang.Error: FATAL EXCEPTION [UnityMain] Unity version : 5.1.1f1
Device model : samsung SM-T210 Device fingerprint:
samsung/lt02wifixx/lt02wifi:4.1.2/JZO54K/T210XXAMKF:user/release-keys
Caused by: java.lang.Error: signal 11 (SIGSEGV), code 1 (SEGV_MAPERR),
fault addr 6ab6b090 Build fingerprint:
'samsung/lt02wifixx/lt02wifi:4.1.2/JZO54K/T210XXAMKF:user/release-keys'
Revision: '7' pid: 13587, tid: 13600, name: UnityMain >>>
com.oriongames.spaceshooter <<< r0 00000000 r1 00000000 r2 80808080 r3
6ab6b090 r4 6952f800 r5 6ab6a11c r6 5eb20520 r7 6ab6b090 r8 5eb20524
r9 5eb2056c sl 00000328 fp 69530190 ip 6ab5ed60 sp 5eb20500 lr
6a9a1979 pc 400ca174 cpsr 4b34354f
at libc.strlen(strlen:72) at
libvrunity.ion::gfx::GraphicsManager::InitGlInfo()(gfx:136) at
libvrunity.ion::gfx::GraphicsManager::InitFunctions()(gfx:356) at
libvrunity.ion::gfx::GraphicsManager::Init(bool)(gfx:172) at
libvrunity.ion::gfx::GraphicsManager::GraphicsManager()(gfx:6010) at
libvrunity.gvr::VrSessionImpl::InitIonDefaults()(VrSessionImpl:124) at
libvrunity.gvr::CardboardVrSessionFactory::CreateCardboardVrSession(gvr::DisplayMetrics
const&, gvr::VrAppInfo const&, bool, std::function const&,
std::function const&)(CardboardVrSessionFactory:72) at
libvrunity.gvr::CardboardApiImpl::CardboardApiImpl(gvr::DisplayMetrics
const&)(CardboardApiImpl:182) at libvrunity.Start(Start:364) at
Unknown.0000eecc(Unknown Source) at BaseCardboardDevice.Start(Native
Method) at BaseCardboardDevice.Init(<0x00090>:144) at
CardboardAndroidDevice.Init(<0x0001b>:27) at
Cardboard.InitDevice(<0x00073>:115) at Cardboard.Awake(<0x00083>:131)
at Object.runtime_invoke_void__this__(Native Method) at
GameObject.Internal_AddComponentWithType(Native Method) at
GameObject.AddComponent(<0x00024>:36) at
GameObject.AddComponent(<0x0002b>:43) at
Cardboard.get_SDK(<0x000a3>:163) at
CameraManagerVRCardboard.Recenter(<0x00017>:23) at
c__IteratorD.MoveNext(<0x0009f>:159) at
.runtime_invoke_bool__this__(Native Method) at
MonoBehaviour.StartCoroutine(Native Method) at
MonoBehaviour.StartCoroutine(<0x00028>:40) at
CameraManager.changeCameraState(<0x000b3>:179) at
StartMenu.Init(<0x00257>:599) at StartMenu.Start(<0x00043>:67) at
Object.runtime_invoke_void__this__(Native Method) at
libmono.00021bcf(Native Method) at
libmono.mono_runtime_invoke(mono_runtime_invoke:136) at
libunity.002b1e08(Native Method)
The game works again if I simply remove the Cardboard SDK from the game.
I try to changed GPU Skinning and Automatic Graphics API under PlayerPref but nothing works.
Do you have any clue ?
Thanks you !