Bug Native Crash - LdrpLogFatalUserCallbackException

Wasn't sure where to put this, so trying 'general support'.

Using Windows and built with Unity 2018.4.18f1

About every 3-4 days, I'm getting crash & exception reports in Unity Cloud that our game/demo is crashing with people.

It's not that often, but it needs to be 'fixed' as obviously our game crashing when we are soon to go live is not good, even if it isn't that often. We've had about 200 downloads of our Demo, and probably around 10-15 of these crashes over a month.

I've logged a support issue over it, 3 weeks ago, but had nothing back from support to even say what this could be or any help.

Any one any ideas what this could be, there is nothing I can really deduce from the stack trace. And because this is anonymous players playing the game, I don't have the ability to talk to anyone about it, to help get more info about what the were doing at the time and/or what the effect to them was.

It's never happened to me personally, and I can't see any common situation looking at any of the other Meta data from the crash reports in Unity cloud.

I'm presuming this is a bug/problem with the Unity engine/core rather than my code as such, but I'm not sure.

I'm also not 100% sure, but looking at the stack trace, I 'think' it might be happening on application exit, rather than 'mid' game, but not sure.

Any pointers would be great, thanks.

The stack trace is this:

Native StackTrace:

Thread 0 (crashed)

0   ntdll                              0x00007ffe033eb4f4 ZwWaitForMultipleObjects

1   KERNELBASE                         0x00007ffdff955fe9 WaitForMultipleObjectsEx

2   KERNELBASE                         0x00007ffdff955ede WaitForMultipleObjects

3   UnityPlayer                        0x00007ffdac566bfd ?HandleCrash@CrashHandlerInternal@winutils@@QEAAXKKPEBDPEAU_CONTEXT@@PEAU_EXCEPTION_RECORD@@_N@Z

4   UnityPlayer                        0x00007ffdac566cae ?HandleCrash@ExternalCrashHandler@winutils@@YAXKKPEAU_EXCEPTION_POINTERS@@@Z

5   UnityPlayer                        0x00007ffdac576048 ?ProcessInternalCrash@winutils@@YAHPEAU_EXCEPTION_POINTERS@@_N@Z

6   KERNELBASE                         0x00007ffdff9fb980 UnhandledExceptionFilter

7   ntdll                              0x00007ffe0341bad1 LdrpLogFatalUserCallbackException

8   ntdll                              0x00007ffe033ee640 KiUserCallbackDispatcherHandler

9   ntdll                              0x00007ffe033ef7fd RtlpExecuteHandlerForException

10  ntdll                              0x00007ffe0335d856 RtlDispatchException

11  ntdll                              0x00007ffe033ee72e KiUserExceptionDispatch

12  (<unknown>)                        0x000001d67fb303b0 <system symbols missing>

13  UnityPlayer                        0x00007ffdac68b1fa ?CleanupClass@Behaviour@@SAXXZ

14  UnityPlayer                        0x00007ffdac5e9c30 ?CleanupAllTypes@TypeManager@@QEAAXXZ

15  UnityPlayer                        0x00007ffdac7b5c42 ?CleanupEngine@@YAXXZ

16  UnityPlayer                        0x00007ffdac7c72a4 ?PlayerCleanup@@YA_N_N@Z

17  UnityPlayer                        0x00007ffdac58d226 ?DoQuit@@YA_N_N@Z

18  UnityPlayer                        0x00007ffdac594b45 ?PlayerMainWndProc@@YA_JPEAUHWND__@@I_K_J@Z

19  USER32                             0x00007ffe01656d91 ?UserCallWinProcCheckWow@@YA_JPEAU_ACTIVATION_CONTEXT@@P6A_JPEAUtagWND@@I_K_J@ZPEAUHWND__@@W4_WM_VALUE@@23PEAXH@Z

20  USER32                             0x00007ffe01656a6c DispatchClientMessage

21  USER32                             0x00007ffe0165fea3 _fnDWORD

22  ntdll                              0x00007ffe033ee6d4 KiUserCallbackDispatcherContinue

23  win32u                             0x00007ffe00731164 NtUserMessageCall

24  USER32                             0x00007ffe01654746 ?RealDefWindowProcWorker@@YA_JPEAUtagWND@@I_K_JK@Z

25  USER32                             0x00007ffe01653f22 ?RealDefWindowProcW@@YA_JPEAUHWND__@@I_K_J@Z

26  uxtheme                            0x00007ffdfdaa5d8a <system symbols missing>

27  uxtheme                            0x00007ffdfdaaf4c2 <system symbols missing>

28  uxtheme                            0x00007ffdfdaa4bb4 <system symbols missing>

29  uxtheme                            0x00007ffdfdaa3661 <system symbols missing>

30  USER32                             0x00007ffe01654464 DefWindowProcW

31  UnityPlayer                        0x00007ffdac595039 ?PlayerMainWndProc@@YA_JPEAUHWND__@@I_K_J@Z

32  USER32                             0x00007ffe01656d91 ?UserCallWinProcCheckWow@@YA_JPEAU_ACTIVATION_CONTEXT@@P6A_JPEAUtagWND@@I_K_J@ZPEAUHWND__@@W4_WM_VALUE@@23PEAXH@Z

33  USER32                             0x00007ffe01656a6c DispatchClientMessage

34  USER32                             0x00007ffe0165fea3 _fnDWORD

35  ntdll                              0x00007ffe033ee6d4 KiUserCallbackDispatcherContinue

36  win32u                             0x00007ffe007310a4 ZwUserPeekMessage

37  USER32                             0x00007ffe01658703 ?_PeekMessage@@YAHPEAUtagMSG@@PEAUHWND__@@IIIH@Z

38  USER32                             0x00007ffe01659896 PeekMessageA

39  UnityPlayer                        0x00007ffdac5626f0 ?WaitForSignalWithMessagePump@GfxDeviceWorker@@QEAAXXZ

40  UnityPlayer                        0x00007ffdac5530c1 ?ShutdownWorkerThread@GfxDeviceClient@@QEAAXXZ

41  UnityPlayer                        0x00007ffdac7b5cb1 ?CleanupEngine@@YAXXZ

42  UnityPlayer                        0x00007ffdac7c72a4 ?PlayerCleanup@@YA_N_N@Z

43  UnityPlayer                        0x00007ffdac58d226 ?DoQuit@@YA_N_N@Z

44  UnityPlayer                        0x00007ffdac594b45 ?PlayerMainWndProc@@YA_JPEAUHWND__@@I_K_J@Z

45  USER32                             0x00007ffe01656d91 ?UserCallWinProcCheckWow@@YA_JPEAU_ACTIVATION_CONTEXT@@P6A_JPEAUtagWND@@I_K_J@ZPEAUHWND__@@W4_WM_VALUE@@23PEAXH@Z

46  USER32                             0x00007ffe01656a6c DispatchClientMessage

47  USER32                             0x00007ffe0165fea3 _fnDWORD

48  ntdll                              0x00007ffe033ee6d4 KiUserCallbackDispatcherContinue

49  win32u                             0x00007ffe00731164 NtUserMessageCall

50  USER32                             0x00007ffe01654746 ?RealDefWindowProcWorker@@YA_JPEAUtagWND@@I_K_JK@Z

51  USER32                             0x00007ffe01653f22 ?RealDefWindowProcW@@YA_JPEAUHWND__@@I_K_J@Z

52  uxtheme                            0x00007ffdfdaa5d8a <system symbols missing>

53  uxtheme                            0x00007ffdfdaaf4c2 <system symbols missing>

54  uxtheme                            0x00007ffdfdaa4bb4 <system symbols missing>

55  uxtheme                            0x00007ffdfdaa3661 <system symbols missing>

56  USER32                             0x00007ffe01654464 DefWindowProcW

57  UnityPlayer                        0x00007ffdac595039 ?PlayerMainWndProc@@YA_JPEAUHWND__@@I_K_J@Z

58  USER32                             0x00007ffe01656d91 ?UserCallWinProcCheckWow@@YA_JPEAU_ACTIVATION_CONTEXT@@P6A_JPEAUtagWND@@I_K_J@ZPEAUHWND__@@W4_WM_VALUE@@23PEAXH@Z

59  USER32                             0x00007ffe01656a6c DispatchClientMessage

60  USER32                             0x00007ffe0165fea3 _fnDWORD

61  ntdll                              0x00007ffe033ee6d4 KiUserCallbackDispatcherContinue

62  win32u                             0x00007ffe00731144 NtUserGetMessage

63  USER32                             0x00007ffe016658c5 GetMessageA

64  UnityPlayer                        0x00007ffdac5929d8 MainMessageLoop

65  UnityPlayer                        0x00007ffdac5972b0 ?UnityMainImpl@@YAHPEAUHINSTANCE__@@0PEA_WH@Z

66  UnityPlayer                        0x00007ffdac59b50b UnityMain

67  SAMA                               0x00007ff779a511fa _scrt_common_main_seh

68  KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

69  ntdll                              0x00007ffe033c3691 RtlUserThreadStart

70  ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 1

0   ntdll                              0x00007ffe033ee2f4 NtWaitForWorkViaWorkerFactory

1   ntdll                              0x00007ffe03376866 TppWorkerThread

2   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

3   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

4   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 2

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   mono-2.0-bdwgc                     0x00007ffdb9f25ac8 mono_win32_wait_for_single_object_ex

3   mono-2.0-bdwgc                     0x00007ffdba0129fd mono_os_sem_timedwait

4   mono-2.0-bdwgc                     0x00007ffdba011795 finalizer_thread

5   mono-2.0-bdwgc                     0x00007ffdb9fd4ca8 start_wrapper_internal

6   mono-2.0-bdwgc                     0x00007ffdb9fd4a36 start_wrapper

7   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

8   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

9   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 3

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac773abf ?ProcessJobs@JobQueue@@AEAAXPEAX@Z

3   UnityPlayer                        0x00007ffdac774c7b ?WorkLoop@JobQueue@@CAPEAXPEAX@Z

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 4

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac773abf ?ProcessJobs@JobQueue@@AEAAXPEAX@Z

3   UnityPlayer                        0x00007ffdac774c7b ?WorkLoop@JobQueue@@CAPEAXPEAX@Z

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 5

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac773abf ?ProcessJobs@JobQueue@@AEAAXPEAX@Z

3   UnityPlayer                        0x00007ffdac774c7b ?WorkLoop@JobQueue@@CAPEAXPEAX@Z

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 6

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac773abf ?ProcessJobs@JobQueue@@AEAAXPEAX@Z

3   UnityPlayer                        0x00007ffdac774c7b ?WorkLoop@JobQueue@@CAPEAXPEAX@Z

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 7

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac773abf ?ProcessJobs@JobQueue@@AEAAXPEAX@Z

3   UnityPlayer                        0x00007ffdac774c7b ?WorkLoop@JobQueue@@CAPEAXPEAX@Z

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 8

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac773abf ?ProcessJobs@JobQueue@@AEAAXPEAX@Z

3   UnityPlayer                        0x00007ffdac774c7b ?WorkLoop@JobQueue@@CAPEAXPEAX@Z

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 9

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac773abf ?ProcessJobs@JobQueue@@AEAAXPEAX@Z

3   UnityPlayer                        0x00007ffdac774c7b ?WorkLoop@JobQueue@@CAPEAXPEAX@Z

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 10

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac773abf ?ProcessJobs@JobQueue@@AEAAXPEAX@Z

3   UnityPlayer                        0x00007ffdac774c7b ?WorkLoop@JobQueue@@CAPEAXPEAX@Z

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 11

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac773abf ?ProcessJobs@JobQueue@@AEAAXPEAX@Z

3   UnityPlayer                        0x00007ffdac774c7b ?WorkLoop@JobQueue@@CAPEAXPEAX@Z

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 12

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac773abf ?ProcessJobs@JobQueue@@AEAAXPEAX@Z

3   UnityPlayer                        0x00007ffdac774c7b ?WorkLoop@JobQueue@@CAPEAXPEAX@Z

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 13

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac773abf ?ProcessJobs@JobQueue@@AEAAXPEAX@Z

3   UnityPlayer                        0x00007ffdac774c7b ?WorkLoop@JobQueue@@CAPEAXPEAX@Z

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 14

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac773abf ?ProcessJobs@JobQueue@@AEAAXPEAX@Z

3   UnityPlayer                        0x00007ffdac774c7b ?WorkLoop@JobQueue@@CAPEAXPEAX@Z

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 15

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac773abf ?ProcessJobs@JobQueue@@AEAAXPEAX@Z

3   UnityPlayer                        0x00007ffdac774c7b ?WorkLoop@JobQueue@@CAPEAXPEAX@Z

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 16

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac773abf ?ProcessJobs@JobQueue@@AEAAXPEAX@Z

3   UnityPlayer                        0x00007ffdac774c7b ?WorkLoop@JobQueue@@CAPEAXPEAX@Z

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 17

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac773abf ?ProcessJobs@JobQueue@@AEAAXPEAX@Z

3   UnityPlayer                        0x00007ffdac774c7b ?WorkLoop@JobQueue@@CAPEAXPEAX@Z

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 18

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac773abf ?ProcessJobs@JobQueue@@AEAAXPEAX@Z

3   UnityPlayer                        0x00007ffdac774c7b ?WorkLoop@JobQueue@@CAPEAXPEAX@Z

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 19

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac773abf ?ProcessJobs@JobQueue@@AEAAXPEAX@Z

3   UnityPlayer                        0x00007ffdac774c7b ?WorkLoop@JobQueue@@CAPEAXPEAX@Z

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 20

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac773abf ?ProcessJobs@JobQueue@@AEAAXPEAX@Z

3   UnityPlayer                        0x00007ffdac774c7b ?WorkLoop@JobQueue@@CAPEAXPEAX@Z

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 21

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac773abf ?ProcessJobs@JobQueue@@AEAAXPEAX@Z

3   UnityPlayer                        0x00007ffdac774c7b ?WorkLoop@JobQueue@@CAPEAXPEAX@Z

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 22

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac773abf ?ProcessJobs@JobQueue@@AEAAXPEAX@Z

3   UnityPlayer                        0x00007ffdac774c7b ?WorkLoop@JobQueue@@CAPEAXPEAX@Z

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 23

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac773abf ?ProcessJobs@JobQueue@@AEAAXPEAX@Z

3   UnityPlayer                        0x00007ffdac774c7b ?WorkLoop@JobQueue@@CAPEAXPEAX@Z

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 24

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac773abf ?ProcessJobs@JobQueue@@AEAAXPEAX@Z

3   UnityPlayer                        0x00007ffdac774c7b ?WorkLoop@JobQueue@@CAPEAXPEAX@Z

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 25

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac773abf ?ProcessJobs@JobQueue@@AEAAXPEAX@Z

3   UnityPlayer                        0x00007ffdac774c7b ?WorkLoop@JobQueue@@CAPEAXPEAX@Z

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 26

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac8194d5 ?HandleOutOfBufferToReadFrom@ThreadedStreamBuffer@@MEAA?AUDataOffsets@1@U21@@Z

3   UnityPlayer                        0x00007ffdac7b8a2c BatchDeleteStep2Threaded

4   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

5   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

7   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 27

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac688f28 ?StaticThreadEntry@AsyncReadManagerThreaded@@CAPEAXPEAX@Z

3   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

4   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

5   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

6   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 28

0   ntdll                              0x00007ffe033ee2f4 NtWaitForWorkViaWorkerFactory

1   ntdll                              0x00007ffe03376866 TppWorkerThread

2   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

3   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

4   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 29

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   UnityPlayer                        0x00007ffdac8194d5 ?HandleOutOfBufferToReadFrom@ThreadedStreamBuffer@@MEAA?AUDataOffsets@1@U21@@Z

3   UnityPlayer                        0x00007ffdac5592a1 ?RunCommand@GfxDeviceWorker@@IEAA?AW4Status@1@AEAVThreadedStreamBuffer@@@Z

4   UnityPlayer                        0x00007ffdac5622ab ?RunExt@GfxDeviceWorker@@MEAAXAEAVThreadedStreamBuffer@@@Z

5   UnityPlayer                        0x00007ffdac562387 ?RunGfxDeviceWorker@GfxDeviceWorker@@KAPEAXPEAX@Z

6   UnityPlayer                        0x00007ffdac8187e1 ?RunThreadWrapper@Thread@@CAKPEAX@Z

7   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

8   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

9   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 30

0   ntdll                              0x00007ffe033eaac4 NtRemoveIoCompletion

1   MSWSOCK                            0x00007ffdfeedf338 SockAsyncThread

2   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

3   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

4   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 31

0   ntdll                              0x00007ffe033ee2f4 NtWaitForWorkViaWorkerFactory

1   ntdll                              0x00007ffe03376866 TppWorkerThread

2   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

3   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

4   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 32

0   win32u                             0x00007ffe007396e4 ZwUserMsgWaitForMultipleObjectsEx

1   USER32                             0x00007ffe0165fced ?RealMsgWaitForMultipleObjectsEx@@YAKKPEBQEAXKKK@Z

2   dxgi                               0x00007ffdfe44d2fa ?WorkerThread@?$ThreadAffinitizedWorkerThread@W4ProxyWindowCommands@@@@KAKPEAX@Z

3   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

4   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

5   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 33

0   win32u                             0x00007ffe007396e4 ZwUserMsgWaitForMultipleObjectsEx

1   USER32                             0x00007ffe0165fced ?RealMsgWaitForMultipleObjectsEx@@YAKKPEBQEAXKKK@Z

2   dxgi                               0x00007ffdfe44d2fa ?WorkerThread@?$ThreadAffinitizedWorkerThread@W4ProxyWindowCommands@@@@KAKPEAX@Z

3   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

4   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

5   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 34

0   ntdll                              0x00007ffe033eaa24 ZwWaitForSingleObject

1   KERNELBASE                         0x00007ffdff9491d2 WaitForSingleObjectEx

2   dxgi                               0x00007ffdfe436445 FullscreenWatchdogThreadWorker

3   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

4   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

5   ntdll                              0x00007ffe033c3691 RtlUserThreadStart



Thread 35

0   ntdll                              0x00007ffe033ee2f4 NtWaitForWorkViaWorkerFactory

1   ntdll                              0x00007ffe03376866 TppWorkerThread

2   KERNEL32                           0x00007ffe00e74034 BaseThreadInitThunk

3   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

4   ntdll                              0x00007ffe033c3691 RtlUserThreadStart

 

Hi,

Had you have any progress with this?
Encountered the same exact issue: demo release, rare crashes with exactly the same report - but I've built the demo with 2020.1.0b10. User reported it happened on alt-tab sometimes, but I can't reproduce it.

 

Hi,

No, Unity never responded to my support request or here

I now don't have crash reporting enabled, as we just launched and I didn't want to have to deal with GDPR and privacy issues, so we turned it off.

We were getting this one about 2/3 times a week maybe (Along with some other ones that differed though), and I could not figure it out. Totally, I'm guessing we had about 20 reports of it, with about 1000 downloads of the demo, so it's not a missive problem, but it really should be looked at IMO.

It a shame, and because it is all 'anonymous', there was no way I could contact the user at all to ask them what happened and if it was always happening or just once and then it was ok.

 

I see the same issue at about the same ratio. Greater than 10k users of our recent demo, with around 200+ "Ldrp" crashes. I've been hopeful that the 2018.4.24 build might fix it (not yet released at the time I write this), since it should address another potential crash issue ( https://forum.unity.com/threads/201...sk-rasterdata-vertexbuffer-null.818181/page-3 ). Memory overwrites can produce mysterious and delayed problems. But, my hope is mostly just wishful thinking.

In my case, I saw it originally get reported twice during a beta of the demo (prior to release). Both times (out of a pool of 30 testers) it did not repeat and happened once to two people. Both times it happened, it was when they were trying to exit the game. In fact in the stack trace, I see "DoQuit" in all of the reports I've looked at so far.

I've not yet had it reported that it happens when Alt-Tabbing, but then a lot of my players tend to run windowed and never alt-tab.

 

Getting this issue too.

 

It's occurring for us too a few times every day, we use 2019.4.f1

 

Also seeing this

 

Also seeing this native crash, with standalone player build on 2020.2.4f1, with crash reporting enabled.

Looks like a crash... inside the crash handler?

.

Native Crash - LdrpLogFatalUserCallbackException

Code (csharp):

1. Native StackTrace:
2.  
3. Thread 0 (crashed)
4. 0   ntdll                              0x00007ff8e942c914 ZwWaitForMultipleObjects
5. 1   KERNELBASE                         0x00007ff8e6c18910 WaitForMultipleObjectsEx
6. 2   KERNELBASE                         0x00007ff8e6c1880e WaitForMultipleObjects
7. 3   UnityPlayer                        0x00007ff8c9adaa7d ?HandleCrash@ExternalCrashHandler@winutils@@AEAAXKKPEBDPEAU_CONTEXT@@PEAU_EXCEPTION_RECORD@@_N@Z
8. 4   UnityPlayer                        0x00007ff8c9adab22 ?HandleCrash@ExternalCrashHandler@winutils@@QEAA_NKKPEAU_EXCEPTION_POINTERS@@@Z
9. 5   UnityPlayer                        0x00007ff8c9aeb1f8 ?ProcessInternalCrash@winutils@@YAHPEAU_EXCEPTION_POINTERS@@_N@Z
10. 6   KERNELBASE                         0x00007ff8e6cdb8b7 UnhandledExceptionFilter
11. 7   ntdll                              0x00007ff8e945f2e8 LdrpLogFatalUserCallbackException
12. 8   ntdll                              0x00007ff8e942fb60 KiUserCallbackDispatcherHandler
13. 9   ntdll                              0x00007ff8e943111f RtlpExecuteHandlerForException
14. 10  ntdll                              0x00007ff8e93db474 RtlDispatchException
15. 11  ntdll                              0x00007ff8e942fc4e KiUserExceptionDispatch
16. 12  UnityPlayer                        0x00007ff8c9b15192 ?RecommitCursorLock@ScreenManagerWin@@QEAAXXZ
17. 13  UnityPlayer                        0x00007ff8c9b1495f ?PlayerMainWndProc@@YA_JPEAUHWND__@@I_K_J@Z
18. 14  USER32                             0x00007ff8e73fe858 ?UserCallWinProcCheckWow@@YA_JPEAU_ACTIVATION_CONTEXT@@P6A_JPEAUtagWND@@I_K_J@ZPEAUHWND__@@W4_WM_VALUE@@23PEAXH@Z
19. 15  USER32                             0x00007ff8e73fe3dc DispatchClientMessage
20. 16  USER32                             0x00007ff8e7410bc3 _fnDWORD
21. 17  ntdll                              0x00007ff8e942fbf4 KiUserCallbackDispatcherContinue
22. 18  win32u                             0x00007ff8e7211064 ZwUserPeekMessage
23. 19  USER32                             0x00007ff8e73fa5c3 ?_PeekMessage@@YAHPEAUtagMSG@@PEAUHWND__@@IIIIH@Z
24. 20  USER32                             0x00007ff8e73f9ad0 PeekMessageA
25. 21  gameoverlayrenderer64              0x00007ff8d811bdbc <system symbols missing>
26. 22  UnityPlayer                        0x00007ff8c9b12798 MainMessageLoop
27. 23  UnityPlayer                        0x00007ff8c9b178c2 ?UnityMainImpl@@YAHPEAUHINSTANCE__@@0PEA_WH@Z
28. 24  UnityPlayer                        0x00007ff8c9b187db UnityMain
29. 25  CoG                                0x00007ff6822a11f2 _scrt_common_main_seh
30. 26  KERNEL32                           0x00007ff8e8786fd4 BaseThreadInitThunk
31. 27  ntdll                              0x00007ff8e93dcec1 RtlUserThreadStart
32. 28  ntdll                              0x00007ff8e93dcec1 RtlUserThreadStart

 

I'm getting similar crash reports regularly through cloud diagnostic, but in my case it looks like the crash always happens when the application is quitting, so it's only a minor issue.

But it would still be nice to be able to fix this, because it's annoying these keep appearing in the dashboard.

 

Just want to add my voice to the chorus here. I'm also getting this error

 

Looks very similar to something I have reported over here:

https://forum.unity.com/threads/random-unity-crashes-on-windows-with-2020-3-urp.1114123/

The only difference is that the UnhandledExceptionFilter is in KERNELBASE - in my case it's in xinput1_3.

I'm also wondering whether this is just a symptom and the actual exception is buried - at least it seems strange that the thread crashes within the ExternalCrashHandler.

Every crash also has this in one of the threads: HandleOutOfBufferToReadFrom
Is this normal, a symptom of the crash or maybe even the source of the problem?

 

Getting reports of same native crashes in 2021.3.4f .

 

Getting this on 2021.3.5f:

Would be helpful to get confirmation as to whether this point to an issue with the engine itself, or something users are doing "wrong".

 

2020.3.39f1
Native Crash - LdrpLogFatalUserCallbackException

Impacted users: 5
Seems that only players on low-end systems affected with integrated graphics.

Thread 0 (crashed)

0   ntdll                              0x00007ffe833446d4 NtWaitForMultipleObjects

1   KERNELBASE                         0x00007ffe80adfb50 WaitForMultipleObjectsEx

2   KERNELBASE                         0x00007ffe80adfa4e WaitForMultipleObjects

3   UnityPlayer                        0x00007ffe32332df2 winutils::ExternalCrashHandler::HandleCrash (C:\buildslave\unity\build\PlatformDependent\Win\ExternalCrashHandler.cpp:350)

4   UnityPlayer                        0x00007ffe32332e82 winutils::ExternalCrashHandler::HandleCrash (C:\buildslave\unity\build\PlatformDependent\Win\ExternalCrashHandler.cpp:422)

5   UnityPlayer                        0x00007ffe323449a8 winutils::ProcessInternalCrash (C:\buildslave\unity\build\PlatformDependent\Win\WinUtils.cpp:596)

6   KERNELBASE                         0x00007ffe80bd5e31 UnhandledExceptionFilter

7   ntdll                              0x00007ffe8337bd22 LdrpLogFatalUserCallbackException

8   ntdll                              0x00007ffe83347a40 KiUserCallbackDispatcherHandler

9   ntdll                              0x00007ffe83348b1f RtlpExecuteHandlerForException

10  ntdll                              0x00007ffe832d5b9a RtlDispatchException

11  ntdll                              0x00007ffe83347b2e KiUserExceptionDispatcher

12  UnityPlayer                        0x000000000053fe52  (C:\buildslave\unity\build\Runtime\Graphics\ScreenManager.h:187)

13  UnityPlayer                        0x00007ffe3236fe52 ScreenManagerWin::RecommitCursorLock (C:\buildslave\unity\build\PlatformDependent\WinPlayer\ScreenManagerWin.cpp:675)

14  UnityPlayer                        0x00007ffe3236f663 PlayerMainWndProc (C:\buildslave\unity\build\PlatformDependent\WinPlayer\WinMain.cpp:1057)

15  USER32                             0x00007ffe82541c4c UserCallWinProcCheckWow

16  USER32                             0x00007ffe8254179c DispatchClientMessage

17  USER32                             0x00007ffe82554c0d _fnDWORD

18  ntdll                              0x00007ffe83347ad4 KiUserCallbackDispatcherContinue

19  win32u                             0x00007ffe80a613b4 ZwUserPeekMessage

20  USER32                             0x00007ffe82549f0f PeekMessage

21  USER32                             0x00007ffe82549c29 PeekMessageA

22  UnityPlayer                        0x00007ffe3236d3d6 MainMessageLoop (C:\buildslave\unity\build\PlatformDependent\WinPlayer\WinMain.cpp:1216)

23  UnityPlayer                        0x00007ffe32372582 UnityMainImpl (C:\buildslave\unity\build\PlatformDependent\WinPlayer\WinMain.cpp:1722)

24  UnityPlayer                        0x00007ffe323734fb UnityMain (C:\buildslave\unity\build\PlatformDependent\WinPlayer\WinMain.cpp:1762)

25  SkillWarz                          0x00000000000011d1 invoke_main (d:\agent\_work\4\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:118)

26  SkillWarz                          0x00007ff70d8511f2 _scrt_common_main_seh (d:\agent\_work\4\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288)

27  KERNEL32                           0x00007ffe82c154e0 BaseThreadInitThunk

28  ntdll                              0x00007ffe832a485b RtlUserThreadStart

29  ntdll                              0x00007ffe832a485b RtlUserThreadStart



Thread 1

0   ntdll                              0x00007ffe833446d4 NtWaitForMultipleObjects

1   KERNELBASE                         0x00007ffe80adfb50 WaitForMultipleObjectsEx

2   combase                            0x00007ffe820efb98 <symbols missing for uuid: 91C40292F04F51FFB7048693F6BCCF7C1>

3   combase                            0x00007ffe820efa0a <symbols missing for uuid: 91C40292F04F51FFB7048693F6BCCF7C1>

4   combase                            0x00007ffe820ef80c <symbols missing for uuid: 91C40292F04F51FFB7048693F6BCCF7C1>

5   combase                            0x00007ffe820ef789 <symbols missing for uuid: 91C40292F04F51FFB7048693F6BCCF7C1>

6   KERNEL32                           0x00007ffe82c154e0 BaseThreadInitThunk

7   ntdll                              0x00007ffe832a485b RtlUserThreadStart

8   ntdll                              0x00007ffe832a485b RtlUserThreadStart



Thread 2

0   ntdll                              0x00007ffe83347734 ZwWaitForWorkViaWorkerFactory

1   ntdll                              0x00007ffe832b6cdf TppWorkerThread

2   KERNEL32                           0x00007ffe82c154e0 BaseThreadInitThunk

3   ntdll                              0x00007ffe832a485b RtlUserThreadStart

4   ntdll                              0x00007ffe832a485b RtlUserThreadStart



Thread 3

0   ntdll                              0x00007ffe83347734 ZwWaitForWorkViaWorkerFactory

1   ntdll                              0x00007ffe832b6cdf TppWorkerThread

2   KERNEL32                           0x00007ffe82c154e0 BaseThreadInitThunk

3   ntdll                              0x00007ffe832a485b RtlUserThreadStart

4   ntdll                              0x00007ffe832a485b RtlUserThreadStart



Thread 4

0   ntdll                              0x00007ffe83343ca4 ZwRemoveIoCompletion

1   mswsock                            0x00007ffe7fca10ab SockAsyncThread

2   KERNEL32                           0x00007ffe82c154e0 BaseThreadInitThunk

3   ntdll                              0x00007ffe832a485b RtlUserThreadStart

4   ntdll                              0x00007ffe832a485b RtlUserThreadStart



Thread 5

0   ntdll                              0x00007ffe83347734 ZwWaitForWorkViaWorkerFactory

1   ntdll                              0x00007ffe832b6cdf TppWorkerThread

2   KERNEL32                           0x00007ffe82c154e0 BaseThreadInitThunk

3   ntdll                              0x00007ffe832a485b RtlUserThreadStart

4   ntdll                              0x00007ffe832a485b RtlUserThreadStart

 

Me too
I spot some "DoQuit" in there. Hopefully it's happening when players are quitting.

Device: 81DE (LENOVO)
OS version: Windows 10 (10.0.0) 64bit
CPU: Intel(R) Core(TM) i5-8250U CPU @ 1.60GHz
GFX: Intel(R) UHD Graphics 620
Unity version: 2019.4.2f1

 

This is the only thread containing the error we have: RecommitCursorLock

From the little experimention we've done, we concluded the error results when
1. Unity is quitting
2. Unloading is taking too long (the window is freezing)
3. The user clicks on the window whilst quitting.

So I think Unity tries to change the CursorLockState whilst freezing, resulting in a crash.

Either Unity needs to apply a fix or Scenes needs to be smaller to unload.
We will just ignore the crashes for now on, since users are already quitting