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realm / realm-dotnet

Realm is a mobile database: a replacement for SQLite & ORMs
https://realm.io
Apache License 2.0
1.24k stars 161 forks source link

SIGABRT crash #1451

Closed Redth closed 6 years ago

Redth commented 7 years ago

Goals

Not crashing!

Expected Results

No crashes ;)

Actual Results

SIGABRT

Steps to Reproduce

Happening out in the wild in my app

Version of Realm and Tooling

Logs

Sorry the logs are a bit ugly in formatting, but I'm not sure how to easily get a nicer symbolicated version out of the crash reporter i'm using:

please_report_this_error_to_help_at_realm_dot_io

SIGABRT: Unknown reason
THREAD 9 CRASHED
0
libsystem_kernel.dylib
__pthread_kill
1
libsystem_c.dylib
abort
2
com.troublefreepool.poolmath
please_report_this_error_to_help_at_realm_dot_io
3
com.troublefreepool.poolmath
realm::util::terminate_internal(std::__1::basic_stringstream<char, std::__1::char_traits<char>, std::__1::allocator<char> >&)
4
com.troublefreepool.poolmath
realm::util::terminate(char const*, char const*, long, std::initializer_list<realm::util::Printable>&&)
5
com.troublefreepool.poolmath
(anonymous namespace)::HistoryImpl::do_find_history_entry(unsigned long long, unsigned long long, unsigned long long, bool, realm::sync::HistoryEntry&, realm::util::Optional<std::__1::unique_ptr<char [], std::__1::default_delete<char []> >&>) const
6
com.troublefreepool.poolmath
(anonymous namespace)::HistoryImpl::find_history_entry_for_upload(unsigned long long, unsigned long long, realm::sync::HistoryEntry&, std::__1::unique_ptr<char [], std::__1::default_delete<char []> >&) const
7
com.troublefreepool.poolmath
(anonymous namespace)::SessionImpl::send_upload_message()
8
com.troublefreepool.poolmath
(anonymous namespace)::Connection::send_next_message()
9
com.troublefreepool.poolmath
realm::util::network::Service::PostOper<(anonymous namespace)::SessionImpl::nonsync_transact_notify(unsigned long long)::$_4>::recycle_and_execute()
10
com.troublefreepool.poolmath
realm::util::network::Service::Impl::run()
11
com.troublefreepool.poolmath
realm::sync::Client::run()
12
com.troublefreepool.poolmath
std::__1::__thread_proxy<std::__1::tuple<realm::_impl::SyncClient::SyncClient(std::__1::unique_ptr<realm::util::Logger, std::__1::default_delete<realm::util::Logger> >, realm::sync::Client::ReconnectMode)::'lambda'()> >(void*, void*)
13
libsystem_pthread.dylib
0x18e569000 + 14416
14
libsystem_pthread.dylib
0x18e569000 + 14176
15
libsystem_pthread.dylib
0x18e569000 + 3500
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THREAD 0
0
com.troublefreepool.poolmath
mono_jit_runtime_invoke mini-runtime.c:2538
1
com.troublefreepool.poolmath
do_runtime_invoke object.c:2860
2
com.troublefreepool.poolmath
mono_runtime_invoke object.c:3018
3
com.troublefreepool.poolmath
native_to_managed_trampoline_131(objc_object*, objc_selector*, _MonoMethod**, UIPickerView*, long, long, unsigned int) registrar.m:6616
4
com.troublefreepool.poolmath
-[Xamarin_Forms_Platform_iOS_PickerRenderer_PickerSource pickerView:titleForRow:forComponent:] registrar.m:13186
5
UIKit
-[UIPickerView _delegateTitleForRow:forComponent:]
6
UIKit
-[UIPickerView tableView:cellForRowAtIndexPath:]
7
UIKit
-[UIPickerColumnView tableView:cellForRowAtIndexPath:]
8
UIKit
-[UITableView _createPreparedCellForGlobalRow:withIndexPath:willDisplay:]
9
UIKit
-[UITableView _createPreparedCellForGlobalRow:willDisplay:]
10
UIKit
-[UITableView _updateVisibleCellsNow:isRecursive:]
11
UIKit
-[UITableView cellForRowAtIndexPath:]
12
UIKit
-[UIPickerTableView selectRow:animated:notify:]
13
Foundation
__NSIndexSetEnumerate
14
UIKit
-[UIPickerTableView selectRow:animated:notify:]
15
UIKit
-[UIPickerView _selectRow:inComponent:animated:notify:]
16
com.troublefreepool.poolmath
wrapper_managed_to_native_ObjCRuntime_Messaging_objc_msgSend_intptr_intptr_System_nint_System_nint_bool <unknown>:1
17
com.troublefreepool.poolmath
UIPickerView.g.cs:204
18
com.troublefreepool.poolmath
Xamarin_Forms_Platform_iOS_PickerRenderer_UpdatePickerSelectedIndex_int (C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Renderers\PickerRenderer.cs:130)
19
com.troublefreepool.poolmath
Xamarin_Forms_Platform_iOS_PickerRenderer_UpdatePicker (C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Renderers\PickerRenderer.cs:105)
20
com.troublefreepool.poolmath
Xamarin_Forms_Platform_iOS_PickerRenderer_OnElementPropertyChanged_object_System_ComponentModel_PropertyChangedEventArgs (C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Renderers\PickerRenderer.cs:73)
21
com.troublefreepool.poolmath
wrapper_delegate_invoke__Module_invoke_void_object_PropertyChangedEventArgs_object_System_ComponentModel_PropertyChangedEventArgs (:73)
22
com.troublefreepool.poolmath
Xamarin_Forms_BindableObject_OnPropertyChanged_string <unknown>:1
23
com.troublefreepool.poolmath
Xamarin_Forms_Element_OnPropertyChanged_string <unknown>:1
24
com.troublefreepool.poolmath
Xamarin_Forms_BindableObject_SetValueActual_Xamarin_Forms_BindableProperty_Xamarin_Forms_BindableObject_BindablePropertyContext_object_bool_Xamarin_Forms_Internals_SetValueFlags_bool <unknown>:1
25
com.troublefreepool.poolmath
Xamarin_Forms_BindableObject_SetValueCore_Xamarin_Forms_BindableProperty_object_Xamarin_Forms_Internals_SetValueFlags_Xamarin_Forms_BindableObject_SetValuePrivateFlags <unknown>:1
26
com.troublefreepool.poolmath
Xamarin_Forms_BindableObject_SetValue_Xamarin_Forms_BindableProperty_object_bool_bool <unknown>:1
27
com.troublefreepool.poolmath
Xamarin_Forms_BindableObject_SetValue_Xamarin_Forms_BindableProperty_object <unknown>:1
28
com.troublefreepool.poolmath
Xamarin_Forms_Picker_set_SelectedIndex_int <unknown>:1
29
com.troublefreepool.poolmath
BindablePicker.cs:234
30
com.troublefreepool.poolmath
BindablePicker.cs:206
31
com.troublefreepool.poolmath
BindablePicker.cs:298
32
com.troublefreepool.poolmath
Xamarin_Forms_BindableObject_SetValueActual_Xamarin_Forms_BindableProperty_Xamarin_Forms_BindableObject_BindablePropertyContext_object_bool_Xamarin_Forms_Internals_SetValueFlags_bool <unknown>:1
33
com.troublefreepool.poolmath
0x1000e4000 + 10578308
34
com.troublefreepool.poolmath
Xamarin_Forms_BindingExpression_ApplyCore_object_Xamarin_Forms_BindableObject_Xamarin_Forms_BindableProperty_bool <unknown>:1
35
com.troublefreepool.poolmath
Xamarin_Forms_BindingExpression_Apply_bool <unknown>:1
36
com.troublefreepool.poolmath
Xamarin_Forms_BindingExpression_BindingExpressionPart__PropertyChangedb__47_0 <unknown>:1
37
com.troublefreepool.poolmath
NSAction.cs:163
38
com.troublefreepool.poolmath
wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr
39
com.troublefreepool.poolmath
mono_jit_runtime_invoke mini-runtime.c:2509
40
com.troublefreepool.poolmath
0x1000e4000 + 21914160
41
com.troublefreepool.poolmath
0x1000e4000 + 21913996
42
com.troublefreepool.poolmath
native_to_managed_trampoline_3(objc_object*, objc_selector*, _MonoMethod**, unsigned int) registrar.m:106
43
com.troublefreepool.poolmath
-[__MonoMac_NSAsyncActionDispatcher xamarinApplySelector] registrar.m:8469
44
Foundation
__NSThreadPerformPerform
45
CoreFoundation
__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__
46
CoreFoundation
__CFRunLoopDoSources0
47
CoreFoundation
__CFRunLoopRun
48
CoreFoundation
CFRunLoopRunSpecific
49
GraphicsServices
GSEventRunModal
50
UIKit
-[UIApplication _run]
51
UIKit
UIApplicationMain
52
com.troublefreepool.poolmath
wrapper_managed_to_native_UIKit_UIApplication_UIApplicationMain_int_string___intptr_intptr <unknown>:1
53
com.troublefreepool.poolmath
UIApplication.cs:79
54
com.troublefreepool.poolmath
UIApplication.cs:63
55
com.troublefreepool.poolmath
Main.cs:18
56
com.troublefreepool.poolmath
0x1000e4000 + 5417572
57
com.troublefreepool.poolmath
0x1000e4000 + 21418964
58
com.troublefreepool.poolmath
0x1000e4000 + 21914160
59
com.troublefreepool.poolmath
do_exec_main_checked object.c:3018
60
com.troublefreepool.poolmath
mono_jit_exec driver.g.c:1037
61
com.troublefreepool.poolmath
xamarin_main monotouch-main.m:482
62
com.troublefreepool.poolmath
main main.m:159
63
0x0 + 0
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THREAD 4
0
libsystem_kernel.dylib
0x18e487000 + 126492
1
com.troublefreepool.poolmath
thread_func mono-os-mutex.h:146
2
libsystem_pthread.dylib
0x18e569000 + 14416
3
libsystem_pthread.dylib
0x18e569000 + 14176
4
libsystem_pthread.dylib
0x18e569000 + 3500
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THREAD 5
0
libsystem_kernel.dylib
semaphore_wait_trap
1
com.troublefreepool.poolmath
start_wrapper threads.c:837
2
com.troublefreepool.poolmath
inner_start_thread mono-threads.c:1170
3
libsystem_pthread.dylib
0x18e569000 + 14416
4
libsystem_pthread.dylib
0x18e569000 + 14176
5
libsystem_pthread.dylib
0x18e569000 + 3500
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THREAD 7
0
libsystem_kernel.dylib
0x18e487000 + 126492
1
com.troublefreepool.poolmath
mono_os_cond_timedwait mono-os-mutex.h:146
2
com.troublefreepool.poolmath
mono_w32handle_timedwait_signal_handle w32handle.c:973
3
com.troublefreepool.poolmath
mono_w32handle_wait_one w32handle.c:1207
4
com.troublefreepool.poolmath
ves_icall_System_Threading_Monitor_Monitor_wait monitor.c:1380
5
com.troublefreepool.poolmath
System_Threading_Monitor_ObjWait_bool_int_object
6
com.troublefreepool.poolmath
System_Threading_Monitor_Wait_object_int_bool
7
com.troublefreepool.poolmath
System_Threading_Monitor_Wait_object_int
8
com.troublefreepool.poolmath
System_Threading_SemaphoreSlim_WaitUntilCountOrTimeout_int_uint_System_Threading_CancellationToken
9
com.troublefreepool.poolmath
System_Threading_SemaphoreSlim_Wait_int_System_Threading_CancellationToken
10
com.troublefreepool.poolmath
BlockingCollection.cs:712
11
com.troublefreepool.poolmath
BlockingCollection.cs:667
12
com.troublefreepool.poolmath
BlockingCollection.cs:554
13
com.troublefreepool.poolmath
Xamarin_Forms_Platform_iOS_CADisplayLinkTicker_StartThread (C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\CADisplayLinkTicker.cs:52)
14
com.troublefreepool.poolmath
System_Threading_ThreadHelper_ThreadStart_Context_object
15
com.troublefreepool.poolmath
System_Threading_ExecutionContext_RunInternal_System_Threading_ExecutionContext_System_Threading_ContextCallback_object_bool
16
com.troublefreepool.poolmath
System_Threading_ExecutionContext_Run_System_Threading_ExecutionContext_System_Threading_ContextCallback_object_bool
17
com.troublefreepool.poolmath
System_Threading_ExecutionContext_Run_System_Threading_ExecutionContext_System_Threading_ContextCallback_object
18
com.troublefreepool.poolmath
System_Threading_ThreadHelper_ThreadStart
19
com.troublefreepool.poolmath
0x1000e4000 + 5417572
20
com.troublefreepool.poolmath
0x1000e4000 + 21418964
21
com.troublefreepool.poolmath
0x1000e4000 + 21914160
22
com.troublefreepool.poolmath
start_wrapper threads.c:845
23
com.troublefreepool.poolmath
0x1000e4000 + 22527732
24
libsystem_pthread.dylib
0x18e569000 + 14416
25
libsystem_pthread.dylib
0x18e569000 + 14176
26
libsystem_pthread.dylib
0x18e569000 + 3500
Collapse Stacktrace
THREAD 8
0
libsystem_kernel.dylib
0x18e487000 + 126492
1
com.troublefreepool.poolmath
mono_os_cond_timedwait mono-os-mutex.h:179
2
com.troublefreepool.poolmath
0x1000e4000 + 22148036
3
com.troublefreepool.poolmath
0x1000e4000 + 22147696
4
com.troublefreepool.poolmath
mono_w32handle_wait_multiple w32handle.c:1241
5
com.troublefreepool.poolmath
mono_wait_uninterrupted threads.c:1868
6
com.troublefreepool.poolmath
ves_icall_System_Threading_WaitHandle_WaitOne_internal threads.c:1993
7
com.troublefreepool.poolmath
wrapper_managed_to_native_System_Threading_WaitHandle_WaitOne_internal_intptr_int
8
com.troublefreepool.poolmath
System_Threading_WaitHandle_WaitOneNative_System_Runtime_InteropServices_SafeHandle_uint_bool_bool
9
com.troublefreepool.poolmath
System_Threading_WaitHandle_InternalWaitOne_System_Runtime_InteropServices_SafeHandle_long_bool_bool
10
com.troublefreepool.poolmath
System_Threading_WaitHandle_WaitOne_long_bool
11
com.troublefreepool.poolmath
System_Threading_WaitHandle_WaitOne_int_bool
12
com.troublefreepool.poolmath
System_Threading_WaitHandle_WaitOne_int
13
com.troublefreepool.poolmath
System_Threading_Timer_Scheduler_SchedulerThread
14
com.troublefreepool.poolmath
0x1000e4000 + 4230876
15
com.troublefreepool.poolmath
0x1000e4000 + 4222636
16
com.troublefreepool.poolmath
0x1000e4000 + 4222236
17
com.troublefreepool.poolmath
0x1000e4000 + 4222108
18
com.troublefreepool.poolmath
0x1000e4000 + 4231204
19
com.troublefreepool.poolmath
0x1000e4000 + 5417572
20
com.troublefreepool.poolmath
0x1000e4000 + 21418964
21
com.troublefreepool.poolmath
0x1000e4000 + 21914160
22
com.troublefreepool.poolmath
0x1000e4000 + 22101964
23
com.troublefreepool.poolmath
0x1000e4000 + 22527732
24
libsystem_pthread.dylib
0x18e569000 + 14416
25
libsystem_pthread.dylib
0x18e569000 + 14176
26
libsystem_pthread.dylib
0x18e569000 + 3500
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THREAD 10
0
libsystem_kernel.dylib
kevent
1
com.troublefreepool.poolmath
std::__1::__async_func<realm::_impl::ExternalCommitHelper::ExternalCommitHelper(realm::_impl::RealmCoordinator&)::$_0>::operator()()
2
com.troublefreepool.poolmath
std::__1::__async_assoc_state<void, std::__1::__async_func<realm::_impl::ExternalCommitHelper::ExternalCommitHelper(realm::_impl::RealmCoordinator&)::$_0> >::__execute()
3
com.troublefreepool.poolmath
std::__1::__thread_proxy<std::__1::tuple<void (std::__1::__async_assoc_state<void, std::__1::__async_func<realm::_impl::ExternalCommitHelper::ExternalCommitHelper(realm::_impl::RealmCoordinator&)::$_0> >::*)(), std::__1::__async_assoc_state<void, std::__1::__async_func<realm::_impl::ExternalCommitHelper::ExternalCommitHelper(realm::_impl::RealmCoordinator&)::$_0> >*> >(void*, void*)
4
libsystem_pthread.dylib
0x18e569000 + 14416
5
libsystem_pthread.dylib
0x18e569000 + 14176
6
libsystem_pthread.dylib
0x18e569000 + 3500
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THREAD 12
0
libsystem_kernel.dylib
0x18e487000 + 126492
1
com.troublefreepool.poolmath
mono_thread_info_sleep mono-os-mutex.h:179
2
com.troublefreepool.poolmath
monitor_thread threadpool-worker-default.c:804
3
com.troublefreepool.poolmath
0x1000e4000 + 22101772
4
com.troublefreepool.poolmath
0x1000e4000 + 22527732
5
libsystem_pthread.dylib
0x18e569000 + 14416
6
libsystem_pthread.dylib
0x18e569000 + 14176
7
libsystem_pthread.dylib
0x18e569000 + 3500
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THREAD 13
0
libsystem_kernel.dylib
0x18e487000 + 126492
1
com.troublefreepool.poolmath
worker_thread mono-os-mutex.h:179
2
com.troublefreepool.poolmath
0x1000e4000 + 22101772
3
com.troublefreepool.poolmath
0x1000e4000 + 22527732
4
libsystem_pthread.dylib
0x18e569000 + 14416
5
libsystem_pthread.dylib
0x18e569000 + 14176
6
libsystem_pthread.dylib
0x18e569000 + 3500
Collapse Stacktrace
nirinchev commented 7 years ago

@morten-krogh can you take a look at that log - looks like something internal to the sync worker?

morten-krogh commented 7 years ago

Yes, it is internal to the Sync client. It would be very interesting if we could get the Realm on which this happens. That is probably not possible. But we can look more closely at the parts of the code around which this happens to see what the possible causes could be.

But without the Realm, it will be hard to know.

Thanks for reporting this issue.

nirinchev commented 7 years ago

@Redth do you have any insights into when that is happening and if it has any long-lasting effect - e.g. corruption/sync stops working for that user/something else? Morten and the sync team will investigate it, but any info you can provide will greatly help and most likely speed up the resolution of the problem.

Redth commented 7 years ago

I don't have the Realm available as my crash report does not include which user it belongs to. In the future i'm hoping to log user identifiers with crashes so maybe i have a hope of grabbing their realm from the server (although perhaps you are more interested in the client side realm).

Unfortunately I haven't reproduced this crash myself. It does seem to occur on iPhone and iPad devices, and I'm seeing from version 9.3.5 up to 10.3.2.

I've had 28 crashes from this in the last 5 days, so it's by far my biggest cause of crashes on iOS currently...

Sorry I don't have more info!

Redth commented 7 years ago

This is still a fairly significant issue for me. It's my biggest crash causer on iOS right now:

image

Redth commented 7 years ago

Here's another raw crash log:

Incident Identifier: 4810d880-ff65-490c-8026-9d1d2e9aacd0
CrashReporter Key:   c25a4f60-a1dd-4e07-b6a9-2ffeebc5b9dd
Hardware Model:      iPad3,4
Process:         com.troublefreep [2009]
Path:            /var/containers/Bundle/Application/AF9646EB-4088-48E3-A02C-A5780403516B/com.troublefreepool.poolmath.app/com.troublefreepool.poolmath
Identifier:      com.troublefreepool.poolmath
Version:         131 (213)
Code Type:       armv7s
Parent Process:  ??? [1]

Date/Time:       2017-07-18T01:31:59.744Z
Launch Time:     2017-07-18T01:21:01.281Z
OS Version:      iPhone OS 10.3.2 (14F89)
Report Version:  104

Exception Type:  SIGABRT
Exception Codes: #0 at 0x1b08dacc
Crashed Thread:  9

Thread 9 Crashed:
0   libsystem_kernel.dylib               0x1b08dacc __pthread_kill + 8
1   libsystem_c.dylib                    0x1b02295b abort + 106
2   com.troublefreepool.poolmath         0x01613bc9 please_report_this_error_to_help_at_realm_dot_io + 6
3   com.troublefreepool.poolmath         0x01614153 realm::util::terminate_internal(std::__1::basic_stringstream<char, std::__1::char_traits<char>, std::__1::allocator<char> >&) + 408
4   com.troublefreepool.poolmath         0x0161432f realm::util::terminate(char const*, char const*, long, std::initializer_list<realm::util::Printable>&&) + 412
5   com.troublefreepool.poolmath         0x015eb7a1 (anonymous namespace)::HistoryImpl::do_find_history_entry(unsigned long long, unsigned long long, unsigned long long, bool, realm::sync::HistoryEntry&, realm::util::Optional<std::__1::unique_ptr<char [], std::__1::default_delete<char []> >&>) const + 966
6   com.troublefreepool.poolmath         0x015e63d9 (anonymous namespace)::HistoryImpl::find_history_entry_for_upload(unsigned long long, unsigned long long, realm::sync::HistoryEntry&, std::__1::unique_ptr<char [], std::__1::default_delete<char []> >&) const + 246
7   com.troublefreepool.poolmath         0x015f6779 (anonymous namespace)::SessionImpl::send_upload_message() + 218
8   com.troublefreepool.poolmath         0x015f5769 (anonymous namespace)::Connection::send_next_message() + 658
9   com.troublefreepool.poolmath         0x015f53b1 (anonymous namespace)::Connection::enlist_to_send((anonymous namespace)::SessionImpl*) + 1674
10  com.troublefreepool.poolmath         0x0160a27b realm::util::network::Service::PostOper<(anonymous namespace)::SessionImpl::nonsync_transact_notify(unsigned long long)::$_4>::recycle_and_execute() + 356
11  com.troublefreepool.poolmath         0x015ab36b realm::util::network::Service::Impl::run() + 196
12  com.troublefreepool.poolmath         0x015eedd1 realm::sync::Client::run() + 378
13  com.troublefreepool.poolmath         0x0154e987 std::__1::__thread_proxy<std::__1::tuple<realm::_impl::SyncClient::SyncClient(std::__1::unique_ptr<realm::util::Logger, std::__1::default_delete<realm::util::Logger> >, realm::sync::Client::ReconnectMode)::'lambda'()> >(void*, void*) + 160
14  libsystem_pthread.dylib              0x1b14493b _pthread_body + 214
15  libsystem_pthread.dylib              0x1b14485d _pthread_start + 232
16  libsystem_pthread.dylib              0x1b142468 thread_start + 6

Thread 0:
0   CoreFoundation                       0x1b9174cc -[NSMutableOrderedSet addObjectsFromOrderedSet:range:] + 95572
1   com.troublefreepool.poolmath         0x00b55c10 wrapper_managed_to_native_ObjCRuntime_Messaging_objc_msgSend_intptr_intptr_intptr_intptr_bool (<unknown>:1)
2   com.troublefreepool.poolmath         0x00ba85f4 Xamarin_iOS_Foundation_NSObject_BeginInvokeOnMainThread_System_Action (NSObject2.cs:548)
3   com.troublefreepool.poolmath         0x0055512c Xamarin_Forms_Platform_iOS_Xamarin_Forms_Forms_IOSPlatformServices_BeginInvokeOnMainThread_System_Action (C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\Forms.cs:134)
4   com.troublefreepool.poolmath         0x0063677c Xamarin_Forms_Core_Xamarin_Forms_Device_BeginInvokeOnMainThread_System_Action + 74
5   com.troublefreepool.poolmath         0x00622504 Xamarin_Forms_Core_Xamarin_Forms_BindingExpression_BindingExpressionPart_PropertyChanged_object_System_ComponentModel_PropertyChangedEventArgs + 306
6   com.troublefreepool.poolmath         0x00622120 Xamarin_Forms_Core_Xamarin_Forms_BindingExpression_WeakPropertyChangedProxy_OnPropertyChanged_object_System_ComponentModel_PropertyChangedEventArgs + 78
7   com.troublefreepool.poolmath         0x0092ac18 System_wrapper_delegate_invoke__Module_invoke_void_object_PropertyChangedEventArgs_object_System_ComponentModel_PropertyChangedEventArgs + 118
8   com.troublefreepool.poolmath         0x000e86e4 com_troublefreepool_poolmath_TroubleFreePool_BaseViewModel_NotifyPropertyChanged_string (<unknown>:96)
9   com.troublefreepool.poolmath         0x000e61c4 com_troublefreepool_poolmath_TroubleFreePool_FreeChlorineAdviceViewModel_NotifyAllProps (<unknown>:162)
10  com.troublefreepool.poolmath         0x000e6b38 com_troublefreepool_poolmath_TroubleFreePool_FreeChlorineAdviceViewModel___ctorb__0_0_object_System_ComponentModel_PropertyChangedEventArgs (<unknown>:19)
11  com.troublefreepool.poolmath         0x0092ac18 System_wrapper_delegate_invoke__Module_invoke_void_object_PropertyChangedEventArgs_object_System_ComponentModel_PropertyChangedEventArgs + 118
12  com.troublefreepool.poolmath         0x00e30a58 Realm_Realms_RealmObject_RaisePropertyChanged_string + 86
13  com.troublefreepool.poolmath         0x00e30d88 Realm_Realms_RealmObject_Realms_NotificationsHelper_INotifiable_NotifyCallbacks_System_Nullable_1_Realms_NotifiableObjectHandleBase_CollectionChangeSet_System_Nullable_1_Realms_NativeException + 586
14  com.troublefreepool.poolmath         0x00e39328 Realm_Realms_NotificationsHelper_NotificationCallbackImpl_intptr_intptr_intptr + 478
15  com.troublefreepool.poolmath         0x00e18ee0 wrapper_native_to_managed_Realms_NotificationsHelper_NotificationCallbackImpl_intptr_intptr_intptr (<unknown>:1)
16  com.troublefreepool.poolmath         0x01578687 realm::ManagedNotificationTokenContext* realm::subscribe_for_notifications<object_add_notification_callback::$_35::operator()() const::'lambda'(realm::CollectionChangeCallback)>(void*, void (*)(void*, realm::MarshallableCollectionChangeSet*, realm::NativeException::Marshallable*), object_add_notification_callback::$_35::operator()() const::'lambda'(realm::CollectionChangeCallback), realm::ObjectSchema*)::'lambda'(realm::CollectionChangeSet, std::exception_ptr)::operator()(realm::CollectionChangeSet, std::exception_ptr) const + 480
17  com.troublefreepool.poolmath         0x01578263 realm::CollectionChangeCallback::Impl<realm::ManagedNotificationTokenContext* realm::subscribe_for_notifications<object_add_notification_callback::$_35::operator()() const::'lambda'(realm::CollectionChangeCallback)>(void*, void (*)(void*, realm::MarshallableCollectionChangeSet*, realm::NativeException::Marshallable*), object_add_notification_callback::$_35::operator()() const::'lambda'(realm::CollectionChangeCallback), realm::ObjectSchema*)::'lambda'(realm::CollectionChangeSet, std::exception_ptr)>::after(realm::CollectionChangeSet const&) + 96
18  com.troublefreepool.poolmath         0x01590129 realm::_impl::CollectionNotifier::after_advance() + 370
19  com.troublefreepool.poolmath         0x01590de5 realm::_impl::NotifierPackage::after_advance() + 22
20  com.troublefreepool.poolmath         0x0155bc97 realm::_impl::transaction::advance(std::__1::unique_ptr<realm::SharedGroup, std::__1::default_delete<realm::SharedGroup> > const&, realm::BindingContext*, realm::_impl::NotifierPackage&) + 624
21  com.troublefreepool.poolmath         0x01555791 realm::_impl::RealmCoordinator::advance_to_latest(realm::Realm&) + 222
22  com.troublefreepool.poolmath         0x01594add realm::Realm::refresh() + 202
23  com.troublefreepool.poolmath         0x0155a42f shared_realm_refresh + 88
24  com.troublefreepool.poolmath         0x00e16af8 wrapper_managed_to_native_Realms_SharedRealmHandle_NativeMethods_refresh_Realms_SharedRealmHandle_Realms_NativeException_ (<unknown>:1)
25  com.troublefreepool.poolmath         0x00e02928 Realms_SharedRealmHandle_Refresh (<unknown>:1)
26  com.troublefreepool.poolmath         0x00e2a790 Realm_Realms_Realm_Refresh + 26
27  com.troublefreepool.poolmath         0x000eaca4 com_troublefreepool_poolmath_TroubleFreePool_ModifyPoolConfigViewModel_UpdateConfig (<unknown>:260)
28  com.troublefreepool.poolmath         0x000eae30 com_troublefreepool_poolmath_TroubleFreePool_ModifyPoolConfigViewModel__get_SaveCommandb__35_1 (<unknown>:96)
29  com.troublefreepool.poolmath         0x00ba5dbc Xamarin_iOS_Foundation_NSAsyncActionDispatcher_Apply (NSAction.cs:163)
30  com.troublefreepool.poolmath         0x0027cb88 wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr + 254
31  com.troublefreepool.poolmath         0x014435b1 mono_jit_runtime_invoke (mini-runtime.c:2509)
32  com.troublefreepool.poolmath         0x0149e9c7 do_runtime_invoke (object.c:2860)
33  com.troublefreepool.poolmath         0x0149e95d mono_runtime_invoke (object.c:3018)
34  com.troublefreepool.poolmath         0x012a0659 native_to_managed_trampoline_3(objc_object*, objc_selector*, _MonoMethod**, unsigned int) (registrar.m:105)
35  com.troublefreepool.poolmath         0x012a0975 -[__MonoMac_NSAsyncActionDispatcher xamarinApplySelector] (registrar.m:8318)
36  Foundation                           0x1c205aef __NSThreadPerformPerform + 384
37  CoreFoundation                       0x1b87bfdd __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 10
38  CoreFoundation                       0x1b87baa5 __CFRunLoopDoSources0 + 326
39  CoreFoundation                       0x1b879f51 __CFRunLoopRun + 1158
40  CoreFoundation                       0x1b7cd1af CFRunLoopRunSpecific + 468
41  CoreFoundation                       0x1b7ccfd1 CFRunLoopRunInMode + 102
42  GraphicsServices                     0x1cf77b41 GSEventRunModal + 78
43  UIKit                                0x20b48e13 UIApplicationMain + 148
44  com.troublefreepool.poolmath         0x00b5d05c wrapper_managed_to_native_UIKit_UIApplication_UIApplicationMain_int_string___intptr_intptr (<unknown>:1)
45  com.troublefreepool.poolmath         0x00bb4b80 Xamarin_iOS_UIKit_UIApplication_Main_string___string_string (UIApplication.cs:79)
46  com.troublefreepool.poolmath         0x001c9f60 com_troublefreepool_poolmath_TroubleFreePool_iOS_Application_Main_string__ (<unknown>:18)
47  com.troublefreepool.poolmath         0x0027cb88 wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr + 254
48  com.troublefreepool.poolmath         0x014435b1 mono_jit_runtime_invoke (mini-runtime.c:2509)
49  com.troublefreepool.poolmath         0x0149e9c7 do_runtime_invoke (object.c:2860)
50  com.troublefreepool.poolmath         0x014a0e1b do_exec_main_checked (object.c:3018)
51  com.troublefreepool.poolmath         0x0142bf17 mono_jit_exec (driver.g.c:1037)
52  com.troublefreepool.poolmath         0x01539148 xamarin_main (monotouch-main.m:480)
53  com.troublefreepool.poolmath         0x012c0619 main (main.m:159)
54  libdyld.dylib                        0x1afba4eb start + 0

Thread 1:
0   libsystem_kernel.dylib               0x1b08d808 __psynch_cvwait + 24
1   libsystem_pthread.dylib              0x1b144fc5 pthread_cond_wait + 36
2   libc++.1.dylib                       0x1aadfc57 std::__1::condition_variable::wait(std::__1::unique_lock<std::__1::mutex>&) + 116
3   JavaScriptCore                       0x1f7312f9 void std::__1::condition_variable_any::wait<std::__1::unique_lock<bmalloc::Mutex> >(std::__1::unique_lock<bmalloc::Mutex>&) + 86
4   JavaScriptCore                       0x1f73127d bmalloc::AsyncTask<bmalloc::Heap, void (bmalloc::Heap::*)()>::threadRunLoop() + 152
5   JavaScriptCore                       0x1f731185 bmalloc::AsyncTask<bmalloc::Heap, void (bmalloc::Heap::*)()>::threadEntryPoint(bmalloc::AsyncTask<bmalloc::Heap, void (bmalloc::Heap::*)()>*) + 18
6   JavaScriptCore                       0x1f7313c7 void* std::__1::__thread_proxy<std::__1::tuple<void (*)(bmalloc::AsyncTask<bmalloc::Heap, void (bmalloc::Heap::*)()>*), bmalloc::AsyncTask<bmalloc::Heap, void (bmalloc::Heap::*)()>*> >(void*) + 64
7   libsystem_pthread.dylib              0x1b14493b _pthread_body + 214
8   libsystem_pthread.dylib              0x1b14485d _pthread_start + 232
9   libsystem_pthread.dylib              0x1b142468 thread_start + 6

Thread 2:
0   libsystem_kernel.dylib               0x1b078900 mach_msg_trap + 20
1   CoreFoundation                       0x1b87bbe3 __CFRunLoopServiceMachPort + 142
2   CoreFoundation                       0x1b87a065 __CFRunLoopRun + 1434
3   CoreFoundation                       0x1b7cd1af CFRunLoopRunSpecific + 468
4   CoreFoundation                       0x1b7ccfd1 CFRunLoopRunInMode + 102
5   WebCore                              0x1f9e8de3 RunWebThread(void*) + 424
6   libsystem_pthread.dylib              0x1b14493b _pthread_body + 214
7   libsystem_pthread.dylib              0x1b14485d _pthread_start + 232
8   libsystem_pthread.dylib              0x1b142468 thread_start + 6

Thread 3:
0   libsystem_kernel.dylib               0x1b078900 mach_msg_trap + 20
1   CoreFoundation                       0x1b87bbe3 __CFRunLoopServiceMachPort + 142
2   CoreFoundation                       0x1b87a065 __CFRunLoopRun + 1434
3   CoreFoundation                       0x1b7cd1af CFRunLoopRunSpecific + 468
4   CoreFoundation                       0x1b7ccfd1 CFRunLoopRunInMode + 102
5   CFNetwork                            0x1beaa393 +[NSURLConnection(Loader) _resourceLoadLoop:] + 400
6   Foundation                           0x1c2058ab __NSThread__start__ + 1120
7   libsystem_pthread.dylib              0x1b14493b _pthread_body + 214
8   libsystem_pthread.dylib              0x1b14485d _pthread_start + 232
9   libsystem_pthread.dylib              0x1b142468 thread_start + 6

Thread 4:
0   libsystem_kernel.dylib               0x1b08d808 __psynch_cvwait + 24
1   libsystem_pthread.dylib              0x1b144fc5 pthread_cond_wait + 36
2   com.troublefreepool.poolmath         0x015071cd thread_func (mono-os-mutex.h:146)
3   libsystem_pthread.dylib              0x1b14493b _pthread_body + 214
4   libsystem_pthread.dylib              0x1b14485d _pthread_start + 232
5   libsystem_pthread.dylib              0x1b142468 thread_start + 6

Thread 5:
0   libsystem_kernel.dylib               0x1b078950 semaphore_wait_trap + 8
1   com.troublefreepool.poolmath         0x014c35a9 start_wrapper (threads.c:837)
2   com.troublefreepool.poolmath         0x01517fbb inner_start_thread (mono-threads.c:1170)
3   libsystem_pthread.dylib              0x1b14493b _pthread_body + 214
4   libsystem_pthread.dylib              0x1b14485d _pthread_start + 232
5   libsystem_pthread.dylib              0x1b142468 thread_start + 6

Thread 6:
0   libsystem_kernel.dylib               0x1b078900 mach_msg_trap + 20
1   CoreFoundation                       0x1b87bbe3 __CFRunLoopServiceMachPort + 142
2   CoreFoundation                       0x1b87a065 __CFRunLoopRun + 1434
3   CoreFoundation                       0x1b7cd1af CFRunLoopRunSpecific + 468
4   CoreFoundation                       0x1b7ccfd1 CFRunLoopRunInMode + 102
5   Foundation                           0x1c121ab5 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 256
6   Foundation                           0x1c13e72d -[NSRunLoop(NSRunLoop) runUntilDate:] + 84
7   UIKit                                0x2144a939 -[UIEventFetcher threadMain] + 126
8   Foundation                           0x1c2058ab __NSThread__start__ + 1120
9   libsystem_pthread.dylib              0x1b14493b _pthread_body + 214
10  libsystem_pthread.dylib              0x1b14485d _pthread_start + 232
11  libsystem_pthread.dylib              0x1b142468 thread_start + 6

Thread 7:
0   libsystem_kernel.dylib               0x1b08d808 __psynch_cvwait + 24
1   libsystem_pthread.dylib              0x1b144fc5 pthread_cond_wait + 36
2   com.troublefreepool.poolmath         0x014ccf2f mono_os_cond_timedwait (mono-os-mutex.h:146)
3   com.troublefreepool.poolmath         0x014cbfeb mono_w32handle_timedwait_signal_handle (w32handle.c:973)
4   com.troublefreepool.poolmath         0x014cbedd mono_w32handle_wait_one (w32handle.c:1207)
5   com.troublefreepool.poolmath         0x014940f9 ves_icall_System_Threading_Monitor_Monitor_wait (monitor.c:1380)
6   com.troublefreepool.poolmath         0x003fcae0 mscorlib_System_Threading_Monitor_ObjWait_bool_int_object (<unknown>:74)
7   com.troublefreepool.poolmath         0x003f9684 mscorlib_System_Threading_SemaphoreSlim_WaitUntilCountOrTimeout_int_uint_System_Threading_CancellationToken (<unknown>:210)
8   com.troublefreepool.poolmath         0x002238b8 System_Threading_SemaphoreSlim_Wait_int_System_Threading_CancellationToken + 526
9   com.troublefreepool.poolmath         0x00878600 System_Collections_Concurrent_BlockingCollection_1_T_REF_TryTakeWithNoTimeValidation_T_REF__int_System_Threading_CancellationToken_System_Threading_CancellationTokenSource (BlockingCollection.cs:712)
10  com.troublefreepool.poolmath         0x00912880 System_System_Collections_Concurrent_BlockingCollection_1_T_REF_Take (<unknown>:667)
11  com.troublefreepool.poolmath         0x00553160 Xamarin_Forms_Platform_iOS_Xamarin_Forms_Platform_iOS_CADisplayLinkTicker_StartThread (C:\BuildAgent3\work\ca3766cfc22354a1\Xamarin.Forms.Platform.iOS\CADisplayLinkTicker.cs:52)
12  com.troublefreepool.poolmath         0x003fd074 mscorlib_System_Threading_ThreadHelper_ThreadStart_Context_object (<unknown>:68)
13  com.troublefreepool.poolmath         0x003fbb4c mscorlib_System_Threading_ExecutionContext_RunInternal_System_Threading_ExecutionContext_System_Threading_ContextCallback_object_bool (<unknown>:957)
14  com.troublefreepool.poolmath         0x003fb8c4 mscorlib_System_Threading_ExecutionContext_Run_System_Threading_ExecutionContext_System_Threading_ContextCallback_object (<unknown>:904)
15  com.troublefreepool.poolmath         0x003fd19c mscorlib_System_Threading_ThreadHelper_ThreadStart (<unknown>:105)
16  com.troublefreepool.poolmath         0x0027cb88 wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr + 254
17  com.troublefreepool.poolmath         0x014435b1 mono_jit_runtime_invoke (mini-runtime.c:2509)
18  com.troublefreepool.poolmath         0x0149e9c7 do_runtime_invoke (object.c:2860)
19  com.troublefreepool.poolmath         0x0149fc83 mono_runtime_delegate_try_invoke (object.c:2971)
20  com.troublefreepool.poolmath         0x014c3649 start_wrapper (threads.c:845)
21  com.troublefreepool.poolmath         0x01517fbb inner_start_thread (mono-threads.c:1170)
22  libsystem_pthread.dylib              0x1b14493b _pthread_body + 214
23  libsystem_pthread.dylib              0x1b14485d _pthread_start + 232
24  libsystem_pthread.dylib              0x1b142468 thread_start + 6

Thread 8:
0   libsystem_kernel.dylib               0x1b08d808 __psynch_cvwait + 24
1   libsystem_pthread.dylib              0x1b145009 pthread_cond_timedwait + 40
2   com.troublefreepool.poolmath         0x014ccf13 mono_os_cond_timedwait (mono-os-mutex.h:179)
3   com.troublefreepool.poolmath         0x014cbfeb mono_w32handle_timedwait_signal_handle (w32handle.c:973)
4   com.troublefreepool.poolmath         0x014cbedd mono_w32handle_wait_one (w32handle.c:1207)
5   com.troublefreepool.poolmath         0x014cc0dd mono_w32handle_wait_multiple (w32handle.c:1241)
6   com.troublefreepool.poolmath         0x014bf217 mono_wait_uninterrupted (threads.c:1868)
7   com.troublefreepool.poolmath         0x014bf42f ves_icall_System_Threading_WaitHandle_WaitOne_internal (threads.c:1993)
8   com.troublefreepool.poolmath         0x002274fc wrapper_managed_to_native_System_Threading_WaitHandle_WaitOne_internal_intptr_int + 78
9   com.troublefreepool.poolmath         0x003fed94 mscorlib_System_Threading_WaitHandle_WaitOneNative_System_Runtime_InteropServices_SafeHandle_uint_bool_bool (<unknown>:102)
10  com.troublefreepool.poolmath         0x003fec00 mscorlib_System_Threading_WaitHandle_InternalWaitOne_System_Runtime_InteropServices_SafeHandle_long_bool_bool (<unknown>:250)
11  com.troublefreepool.poolmath         0x003feb78 mscorlib_System_Threading_WaitHandle_WaitOne_int (<unknown>:239)
12  com.troublefreepool.poolmath         0x00400510 mscorlib_System_Threading_Timer_Scheduler_SchedulerThread (<unknown>:395)
13  com.troublefreepool.poolmath         0x003fd074 mscorlib_System_Threading_ThreadHelper_ThreadStart_Context_object (<unknown>:68)
14  com.troublefreepool.poolmath         0x003fbb4c mscorlib_System_Threading_ExecutionContext_RunInternal_System_Threading_ExecutionContext_System_Threading_ContextCallback_object_bool (<unknown>:957)
15  com.troublefreepool.poolmath         0x003fb8c4 mscorlib_System_Threading_ExecutionContext_Run_System_Threading_ExecutionContext_System_Threading_ContextCallback_object (<unknown>:904)
16  com.troublefreepool.poolmath         0x003fd19c mscorlib_System_Threading_ThreadHelper_ThreadStart (<unknown>:105)
17  com.troublefreepool.poolmath         0x0027cb88 wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr + 254
18  com.troublefreepool.poolmath         0x014435b1 mono_jit_runtime_invoke (mini-runtime.c:2509)
19  com.troublefreepool.poolmath         0x0149e9c7 do_runtime_invoke (object.c:2860)
20  com.troublefreepool.poolmath         0x0149fc83 mono_runtime_delegate_try_invoke (object.c:2971)
21  com.troublefreepool.poolmath         0x014c3649 start_wrapper (threads.c:845)
22  com.troublefreepool.poolmath         0x01517fbb inner_start_thread (mono-threads.c:1170)
23  libsystem_pthread.dylib              0x1b14493b _pthread_body + 214
24  libsystem_pthread.dylib              0x1b14485d _pthread_start + 232
25  libsystem_pthread.dylib              0x1b142468 thread_start + 6

Thread 10:
0   libsystem_kernel.dylib               0x1b07bba8 kevent + 24
1   com.troublefreepool.poolmath         0x0157e257 std::__1::__async_func<realm::_impl::ExternalCommitHelper::ExternalCommitHelper(realm::_impl::RealmCoordinator&)::$_0>::operator()() + 80
2   com.troublefreepool.poolmath         0x0157e16f std::__1::__async_assoc_state<void, std::__1::__async_func<realm::_impl::ExternalCommitHelper::ExternalCommitHelper(realm::_impl::RealmCoordinator&)::$_0> >::__execute() + 84
3   com.troublefreepool.poolmath         0x0157e3fd std::__1::__thread_proxy<std::__1::tuple<void (std::__1::__async_assoc_state<void, std::__1::__async_func<realm::_impl::ExternalCommitHelper::ExternalCommitHelper(realm::_impl::RealmCoordinator&)::$_0> >::*)(), std::__1::__async_assoc_state<void, std::__1::__async_func<realm::_impl::ExternalCommitHelper::ExternalCommitHelper(realm::_impl::RealmCoordinator&)::$_0> >*> >(void*, void*) + 142
4   libsystem_pthread.dylib              0x1b14493b _pthread_body + 214
5   libsystem_pthread.dylib              0x1b14485d _pthread_start + 232
6   libsystem_pthread.dylib              0x1b142468 thread_start + 6

Thread 11:
0   libsystem_kernel.dylib               0x1b08e73c __workq_kernreturn + 8
1   libsystem_pthread.dylib              0x1b14245c start_wqthread + 6

Thread 12:
0   libsystem_kernel.dylib               0x1b08d808 __psynch_cvwait + 24
1   libsystem_pthread.dylib              0x1b145009 pthread_cond_timedwait + 40
2   com.troublefreepool.poolmath         0x015182e3 mono_thread_info_sleep (mono-os-mutex.h:179)
3   com.troublefreepool.poolmath         0x014ba189 monitor_thread (threadpool-worker-default.c:804)
4   com.troublefreepool.poolmath         0x014c35a9 start_wrapper (threads.c:837)
5   com.troublefreepool.poolmath         0x01517fbb inner_start_thread (mono-threads.c:1170)
6   libsystem_pthread.dylib              0x1b14493b _pthread_body + 214
7   libsystem_pthread.dylib              0x1b14485d _pthread_start + 232
8   libsystem_pthread.dylib              0x1b142468 thread_start + 6

Thread 13:
0   libsystem_kernel.dylib               0x1b08d808 __psynch_cvwait + 24
1   libsystem_pthread.dylib              0x1b145009 pthread_cond_timedwait + 40
2   com.troublefreepool.poolmath         0x014ba759 worker_thread (mono-os-mutex.h:179)
3   com.troublefreepool.poolmath         0x014c35a9 start_wrapper (threads.c:837)
4   com.troublefreepool.poolmath         0x01517fbb inner_start_thread (mono-threads.c:1170)
5   libsystem_pthread.dylib              0x1b14493b _pthread_body + 214
6   libsystem_pthread.dylib              0x1b14485d _pthread_start + 232
7   libsystem_pthread.dylib              0x1b142468 thread_start + 6

Thread 14:
0   libsystem_kernel.dylib               0x1b08e73c __workq_kernreturn + 8
1   libsystem_pthread.dylib              0x1b14245c start_wqthread + 6

Thread 15:
0   libsystem_kernel.dylib               0x1b08e73c __workq_kernreturn + 8
1   libsystem_pthread.dylib              0x1b14245c start_wqthread + 6

Thread 16:
0   libsystem_kernel.dylib               0x1b08e73c __workq_kernreturn + 8
1   libsystem_pthread.dylib              0x1b14245c start_wqthread + 6

Thread 9 crashed with armv7s Thread State:
    r7: 0x19368294    r12: 0x00000148     r3: 0x15f45000     r8: 0x0000001b
    sp: 0x19368288    r10: 0x00000000     r4: 0x00000006     r9: 0x3895b744
    r0: 0x00000000     r5: 0x19369000     lr: 0x1b146087   cpsr: 0x00000010
    r1: 0x00000000    r11: 0x00000000     r6: 0x00000000     pc: 0x1b08dacc
    r2: 0x00000000

Binary Images:
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0x1aada000 -        0x1ab25fff  libc++.1.dylib armv7s  <818c230d-fc88-357a-b249-302107b831f0> /usr/lib/libc++.1.dylib
0x1afb7000 -        0x1afbafff  libdyld.dylib armv7s  <60e884ce-36b2-37e6-9d9e-ef4552b1f824> /usr/lib/system/libdyld.dylib
0x1afd8000 -        0x1b038fff  libsystem_c.dylib armv7s  <95ded7c0-7180-3a65-ab5c-a3b6145c728c> /usr/lib/system/libsystem_c.dylib
0x1b078000 -        0x1b093fff  libsystem_kernel.dylib armv7s  <6b92f311-0b5c-3bc8-85fe-467c2a31abcc> /usr/lib/system/libsystem_kernel.dylib
0x1b141000 -        0x1b149fff  libsystem_pthread.dylib armv7s  <168117cf-b548-3642-8956-9c1f17089d14> /usr/lib/system/libsystem_pthread.dylib
0x1b7c5000 -        0x1bafdfff  CoreFoundation armv7s  <acedaa63-1829-3afa-8cc2-49f6e92eb254> /System/Library/Frameworks/CoreFoundation.framework/CoreFoundation
0x1bded000 -        0x1c0bafff  CFNetwork armv7s  <2a81c595-c1cc-395a-bdf7-6a3cbec50d08> /System/Library/Frameworks/CFNetwork.framework/CFNetwork
0x1c116000 -        0x1c3a5fff  Foundation armv7s  <e4a3c3cd-0b24-3d0c-b8ff-73fc36c4b714> /System/Library/Frameworks/Foundation.framework/Foundation
0x1cf6e000 -        0x1cf7ffff  GraphicsServices armv7s  <406bb820-b2fd-358d-825d-656249f1eded> /System/Library/PrivateFrameworks/GraphicsServices.framework/GraphicsServices
0x1f228000 -        0x1f7a3fff  JavaScriptCore armv7s  <7cd1f798-958a-375e-96ec-6e4c1f6e81de> /System/Library/Frameworks/JavaScriptCore.framework/JavaScriptCore
0x1f9b5000 -        0x2076cfff  WebCore armv7s  <51436017-c76c-3c6f-ab47-bb42f917a6db> /System/Library/PrivateFrameworks/WebCore.framework/WebCore
0x20ad7000 -        0x217a1fff  UIKit armv7s  <cefd3b17-06ba-362d-bb6a-801d07abeb77> /System/Library/Frameworks/UIKit.framework/UIKit
morten-krogh commented 7 years ago

The suspect function is this:

5 com.troublefreepool.poolmath 0x015eb7a1 (anonymous namespace)::HistoryImpl::do_find_history_entry(unsigned long long, unsigned long long, unsigned long long, bool, realm::sync::HistoryEntry&, realm::util::Optional<std::__1::unique_ptr<char [], std::__1::default_delete<char []> >&>) const + 966

This function is making a lookup in the Realm for the next changes to send to the server. Hence, it would be very nice to see the client side Realm.

Redth commented 7 years ago

Haven't been able to repro this on any of my own devices... i will be pushing an update that will include user id's with crash reports soon... it may be possible for me to attach the client side realm file to crash reports... I'll have a look...

bmunkholm commented 7 years ago

@morten-krogh with the offset into that function you should be able to see more precisely where we crash? And perhaps add some asserts around that with more info.

morten-krogh commented 7 years ago

We call terminate() somewhere during the processing of do_find_history_entry(). Yes, I could use the offset to pin it down a bit more.

Getting a Realm would be the best option of course.

First, one question. When we call terminate we print out some text like this:

"IMPORTANT: if you see this error, please send this log to help@realm.io."

and much more information.

This information text goes to a termination_notification_callback function.

Is such a termination_notification_callback turned on? Is this output also available?

@nirinchev @Redth

nirinchev commented 7 years ago

I'm not aware of the termination_notification_callback and I'm fairly certain we don't expose it anywhere in the .NET binding.

nirinchev commented 7 years ago

@Redth we've released 1.6 with a bunch of fixes on the sync side. While we're uncertain whether those will address the crashes you're seeing, I'd advise trying it out. Have you made progress in terms of obtaining the client side Realm for those crashing users?

nirinchev commented 6 years ago

I'm closing this due to lack of response. If it occurs with 1.6 or later, feel free to reopen.