CFPrefsPlistSource calls get into a loop and freeze the whole OS

Here are some logs

Can you post the full crash report for one of these logs?

Share and Enjoy
—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

let myEmail = "eskimo" + "1" + "@apple.com"

Sure thing, here we are:

Incident Identifier: F6A551DE-9F78-4615-AE3F-A3F239BA6B92
CrashReporter Key:   ac4072eb4ff869d4d2ca72ecac73304632f554f7
Hardware Model:      iPhone10,6
Process:             THEAPP [10537]
Path:                THEAPP
Identifier:          THEAPP
Version:             1 (2.2.8)
Code Type:           ARM-64 (Native)
Role:                Foreground
Parent Process:      launchd [1]
Coalition:           THEAPP [3028]




Date/Time:           2018-03-22 12:35:36.5659 +0200
Launch Time:         2018-03-22 08:47:15.6637 +0200
OS Version:          iPhone OS 11.2.6 (15D100)
Baseband Version:    1.03.06
Report Version:      104


Exception Type:  EXC_CRASH (SIGKILL)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note:  EXC_CORPSE_NOTIFY
Termination Reason: Namespace SPRINGBOARD, Code 0x8badf00d
Termination Description: SPRINGBOARD, scene-update watchdog transgression: THEAPP exhausted real (wall clock) time allowance of 10.00 seconds |  | ProcessVisibility: Foreground | ProcessState: Running | WatchdogEvent: scene-update | WatchdogVisibility: Foreground | WatchdogCPUStatistics: ( | "Elapsed total CPU time (seconds): 3.490 (user 3.490, system 0.000), 6% CPU", | "Elapsed application CPU time (seconds): 0.064, 0% CPU" | )
Triggered by Thread:  0


Filtered syslog:
None found


Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   libsystem_kernel.dylib         0x000000018621f568 mach_msg_trap + 8
1   libsystem_kernel.dylib         0x000000018621f3e0 mach_msg + 72
2   libdispatch.dylib             0x00000001860de7c0 _dispatch_mach_send_and_wait_for_reply + 644
3   libdispatch.dylib             0x00000001860dec6c dispatch_mach_send_with_result_and_wait_for_reply$VARIANT$armv81 + 56
4   libxpc.dylib                   0x000000018638fd7c xpc_connection_send_message_with_reply_sync + 196
5   CoreFoundation                 0x00000001866983a8 __78-[CFPrefsPlistSource sendRequestNewDataMessage:toConnection:retryCount:error:]_block_invoke + 24
6   CoreFoundation                 0x00000001866c6cd4 CFPREFERENCES_IS_WAITING_FOR_SYSTEM_CFPREFSD + 48
7   CoreFoundation                 0x00000001866982ec -[CFPrefsPlistSource sendRequestNewDataMessage:toConnection:retryCount:error:] + 256
8   CoreFoundation                 0x0000000186696440 -[CFPrefsPlistSource handleErrorReply:fromMessageSettingKey:toValue:retryCount:retryContinuation:] + 1040
9   CoreFoundation                 0x0000000186697a2c -[CFPrefsPlistSource handleReply:toRequestNewDataMessage:onConnection:retryCount:error:] + 188
10  CoreFoundation                 0x0000000186698314 -[CFPrefsPlistSource sendRequestNewDataMessage:toConnection:retryCount:error:] + 296
11  CoreFoundation                 0x0000000186696440 -[CFPrefsPlistSource handleErrorReply:fromMessageSettingKey:toValue:retryCount:retryContinuation:] + 1040
12  CoreFoundation                 0x0000000186697a2c -[CFPrefsPlistSource handleReply:toRequestNewDataMessage:onConnection:retryCount:error:] + 188
13  CoreFoundation                 0x0000000186698314 -[CFPrefsPlistSource sendRequestNewDataMessage:toConnection:retryCount:error:] + 296
14  CoreFoundation                 0x0000000186696440 -[CFPrefsPlistSource handleErrorReply:fromMessageSettingKey:toValue:retryCount:retryContinuation:] + 1040
15  CoreFoundation                 0x0000000186697a2c -[CFPrefsPlistSource handleReply:toRequestNewDataMessage:onConnection:retryCount:error:] + 188
16  CoreFoundation                 0x0000000186698314 -[CFPrefsPlistSource sendRequestNewDataMessage:toConnection:retryCount:error:] + 296
17  CoreFoundation                 0x0000000186696440 -[CFPrefsPlistSource handleErrorReply:fromMessageSettingKey:toValue:retryCount:retryContinuation:] + 1040
18  CoreFoundation                 0x0000000186697a2c -[CFPrefsPlistSource handleReply:toRequestNewDataMessage:onConnection:retryCount:error:] + 188
19  CoreFoundation                 0x0000000186698314 -[CFPrefsPlistSource sendRequestNewDataMessage:toConnection:retryCount:error:] + 296
20  CoreFoundation                 0x00000001866972e4 __50-[CFPrefsPlistSource alreadylocked_requestNewData]_block_invoke + 92
21  CoreFoundation                 0x000000018676f538 -[_CFXPreferences withConnectionForRole:performBlock:] + 48
22  CoreFoundation                 0x0000000186697214 -[CFPrefsPlistSource alreadylocked_requestNewData] + 288
23  CoreFoundation                 0x0000000186698cc8 -[CFPrefsPlistSource generationCount] + 572
24  CoreFoundation                 0x00000001866c6834 -[CFPrefsSearchListSource handleReply:toRequestNewDataMessage:onConnection:retryCount:error:] + 132
25  CoreFoundation                 0x00000001866c72b8 __80-[CFPrefsSearchListSource alreadylocked_generationCountFromListOfSources:count:]_block_invoke_3.143 + 80
26  CoreFoundation                 0x000000018676f538 -[_CFXPreferences withConnectionForRole:performBlock:] + 48
27  CoreFoundation                 0x00000001866c725c __80-[CFPrefsSearchListSource alreadylocked_generationCountFromListOfSources:count:]_block_invoke_2.142 + 124
28  libsystem_trace.dylib         0x0000000186370b54 _os_activity_initiate_impl + 60
29  CoreFoundation                 0x00000001866c71b4 __80-[CFPrefsSearchListSource alreadylocked_generationCountFromListOfSources:count:]_block_invoke.140 + 124
30  CoreFoundation                 0x00000001866c6cd4 CFPREFERENCES_IS_WAITING_FOR_SYSTEM_CFPREFSD + 48
31  CoreFoundation                 0x00000001866c6f0c -[CFPrefsSearchListSource alreadylocked_generationCountFromListOfSources:count:] + 184
32  CoreFoundation                 0x00000001866c77c0 -[CFPrefsSearchListSource alreadylocked_copyDictionary] + 384
33  CoreFoundation                 0x00000001866c5a60 -[CFPrefsSearchListSource alreadylocked_copyValueForKey:] + 88
34  CoreFoundation                 0x0000000186764218 -[CFPrefsSource copyValueForKey:] + 64
35  CoreFoundation                 0x000000018676e2b4 __76-[_CFXPreferences copyAppValueForKey:identifier:container:configurationURL:]_block_invoke + 40
36  CoreFoundation                 0x00000001866c92f0 __108-[_CFXPreferences+ 922352 (SearchListAdditions) withSearchListForIdentifier:container:cloudConfigurationURL:perform:]_block_invoke + 268
37  CoreFoundation                 0x00000001866c8b0c normalizeQuintuplet + 356
38  CoreFoundation                 0x00000001866c91d8 -[_CFXPreferences+ 922072 (SearchListAdditions) withSearchListForIdentifier:container:cloudConfigurationURL:perform:] + 108
39  CoreFoundation                 0x000000018676e24c -[_CFXPreferences copyAppValueForKey:identifier:container:configurationURL:] + 124
40  CoreFoundation                 0x0000000186770bb0 _CFPreferencesGetAppBooleanValueWithContainer + 136
41  Foundation                     0x00000001870257a8 -[NSUserDefaults+ 51112 (NSUserDefaults) boolForKey:] + 112
42  UIFoundation                   0x0000000190e48adc +[NSTypesetter allowsDefaultLineBreakStrategy] + 212
43  UIFoundation                   0x0000000190e31fc4 -[NSCoreTypesetter _NSStringDrawingCoreTextEngineWithOriginalString:rect:padding:context:forceClipping:usesWebKitCompatibleMetrics:attributes:options:drawingContext:wantsTextLineFragments:validatedAttributedString:firstNonRenderedCharacterIndex:foundSoftHyphenAtEOL:enginePathUsed:] + 3040
44  UIFoundation                   0x0000000190e2d070 __NSStringDrawingEngine + 6000
45  UIFoundation                   0x0000000190e2f53c -[NSAttributedString+ 419132 (NSExtendedStringDrawing) boundingRectWithSize:options:context:] + 596
46  UIKit                         0x000000018fcf01a4 -[UILabel _textRectForBounds:limitedToNumberOfLines:includingShadow:] + 476
47  UIKit                         0x000000018fceff2c -[UILabel _intrinsicSizeWithinSize:] + 124
48  UIKit                         0x000000018fdd1350 -[UILabel intrinsicContentSize] + 360
49  UIKit                         0x000000018fdd1038 -[UIView+ 1028152 (UIConstraintBasedLayout) _generateContentSizeConstraints] + 52
50  UIKit                         0x000000018fdd0a80 -[UIView+ 1026688 (UIConstraintBasedLayout) _updateContentSizeConstraints] + 268
51  UIKit                         0x00000001907eee90 -[UIView+ 11636368 (AdditionalLayoutSupport) _updateSystemConstraints] + 112
52  UIKit                         0x00000001907ed9b8 -[UIView+ 11631032 (AdditionalLayoutSupport) _sendUpdateConstraintsIfNecessaryForSecondPass:] + 188
53  UIKit                         0x00000001907ede80 -[UIView+ 11632256 (AdditionalLayoutSupport) _updateConstraintsIfNeededCollectingViews:forSecondPass:] + 1008
54  UIKit                         0x00000001907edd58 -[UIView+ 11631960 (AdditionalLayoutSupport) _updateConstraintsIfNeededCollectingViews:forSecondPass:] + 712
55  UIKit                         0x00000001907edd58 -[UIView+ 11631960 (AdditionalLayoutSupport) _updateConstraintsIfNeededCollectingViews:forSecondPass:] + 712
56  UIKit                         0x00000001907edd58 -[UIView+ 11631960 (AdditionalLayoutSupport) _updateConstraintsIfNeededCollectingViews:forSecondPass:] + 712
57  UIKit                         0x00000001907edd58 -[UIView+ 11631960 (AdditionalLayoutSupport) _updateConstraintsIfNeededCollectingViews:forSecondPass:] + 712
58  UIKit                         0x00000001907edd58 -[UIView+ 11631960 (AdditionalLayoutSupport) _updateConstraintsIfNeededCollectingViews:forSecondPass:] + 712
59  UIKit                         0x00000001907edd58 -[UIView+ 11631960 (AdditionalLayoutSupport) _updateConstraintsIfNeededCollectingViews:forSecondPass:] + 712
60  UIKit                         0x00000001907edd58 -[UIView+ 11631960 (AdditionalLayoutSupport) _updateConstraintsIfNeededCollectingViews:forSecondPass:] + 712
61  UIKit                         0x00000001907edd58 -[UIView+ 11631960 (AdditionalLayoutSupport) _updateConstraintsIfNeededCollectingViews:forSecondPass:] + 712
62  UIKit                         0x00000001907edd58 -[UIView+ 11631960 (AdditionalLayoutSupport) _updateConstraintsIfNeededCollectingViews:forSecondPass:] + 712
63  UIKit                         0x00000001907edd58 -[UIView+ 11631960 (AdditionalLayoutSupport) _updateConstraintsIfNeededCollectingViews:forSecondPass:] + 712
64  Foundation                     0x00000001870674dc -[NSISEngine withBehaviors:performModifications:] + 168
65  UIKit                         0x00000001907ee0cc -[UIView+ 11632844 (AdditionalLayoutSupport) _recursiveUpdateConstraintsIfNeededCollectingViews:forSecondPass:] + 124
66  UIKit                         0x00000001907edd58 -[UIView+ 11631960 (AdditionalLayoutSupport) _updateConstraintsIfNeededCollectingViews:forSecondPass:] + 712
67  Foundation                     0x00000001870674dc -[NSISEngine withBehaviors:performModifications:] + 168
68  UIKit                         0x00000001907ee3b0 -[UIView+ 11633584 (AdditionalLayoutSupport) _updateConstraintsIfNeededWithViewForVariableChangeNotifications:] + 548
69  UIKit                         0x00000001907e53e8 -[UIWindow+ 11596776 (UIConstraintBasedLayout) _updateConstraintsIfNeededWithViewForVariableChangeNotifications:] + 104
70  UIKit                         0x00000001907ef260 -[UIView+ 11637344 (AdditionalLayoutSupport) _updateConstraintsAtEngineLevelIfNeededWithViewForVariableChangeNotifications:] + 428
71  UIKit                         0x000000018ffc4484 -[UIView+ 3073156 (Hierarchy) _updateConstraintsAsNecessaryAndApplyLayoutFromEngine] + 180
72  UIKit                         0x000000018fce2e18 -[UIView+ 52760 (CALayerDelegate) layoutSublayersOfLayer:] + 1276
73  QuartzCore                     0x000000018a76f948 -[CALayer layoutSublayers] + 184
74  QuartzCore                     0x000000018a773ad0 CA::Layer::layout_if_needed+ 1206992 (CA::Transaction*) + 332
75  QuartzCore                     0x000000018a6e031c CA::Context::commit_transaction+ 602908 (CA::Transaction*) + 336
76  QuartzCore                     0x000000018a707b40 CA::Transaction::commit+ 764736 () + 540
77  QuartzCore                     0x000000018a708980 CA::Transaction::observer_callback+ 768384 (__CFRunLoopObserver*, unsigned long, void*) + 92
78  CoreFoundation                 0x00000001866d2cdc __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 32
79  CoreFoundation                 0x00000001866d0694 __CFRunLoopDoObservers + 412
80  CoreFoundation                 0x00000001866d0c50 __CFRunLoopRun + 1292
81  CoreFoundation                 0x00000001865f0c58 CFRunLoopRunSpecific + 436
82  GraphicsServices               0x000000018849cf84 GSEventRunModal + 100
83  UIKit                         0x000000018fd495c4 UIApplicationMain + 236
84  THEAPP                         0x00000001047823c8 main + 107464 (SupportNumberCell.swift:65)
85  libdyld.dylib                 0x000000018611056c start + 4


Thread 1 name:  com.apple.uikit.eventfetch-thread
Thread 1:
0   libsystem_kernel.dylib         0x000000018621f568 mach_msg_trap + 8
1   libsystem_kernel.dylib         0x000000018621f3e0 mach_msg + 72
2   CoreFoundation                 0x00000001866d3108 __CFRunLoopServiceMachPort + 196
3   CoreFoundation                 0x00000001866d0cd4 __CFRunLoopRun + 1424
4   CoreFoundation                 0x00000001865f0c58 CFRunLoopRunSpecific + 436
5   Foundation                     0x0000000187025594 -[NSRunLoop+ 50580 (NSRunLoop) runMode:beforeDate:] + 304
6   Foundation                     0x00000001870449ac -[NSRunLoop+ 178604 (NSRunLoop) runUntilDate:] + 96
7   UIKit                         0x00000001908b37a8 -[UIEventFetcher threadMain] + 136
8   Foundation                     0x00000001871270f4 __NSThread__start__ + 996
9   libsystem_pthread.dylib       0x00000001863542b4 _pthread_body + 308
10  libsystem_pthread.dylib       0x0000000186354180 _pthread_body + 0
11  libsystem_pthread.dylib       0x0000000186352b74 thread_start + 4


Thread 2 name:  com.twitter.crashlytics.ios.MachExceptionServer
Thread 2:
0   libsystem_kernel.dylib         0x000000018621f568 mach_msg_trap + 8
1   libsystem_kernel.dylib         0x000000018621f3e0 mach_msg + 72
2   THEAPP                         0x0000000104872c10 CLSMachExceptionServer + 1092624 (CLSMachException.c:180)
3   libsystem_pthread.dylib       0x00000001863542b4 _pthread_body + 308
4   libsystem_pthread.dylib       0x0000000186354180 _pthread_body + 0
5   libsystem_pthread.dylib       0x0000000186352b74 thread_start + 4


Thread 3 name:  RLMRealm notification listener
Thread 3:
0   libsystem_kernel.dylib         0x0000000186223ab0 kevent + 8
1   Realm                         0x0000000104bf1f10 realm::_impl::ExternalCommitHelper::listen() + 89872 (external_commit_helper.cpp:203)
2   Realm                         0x0000000104bf29fc std::__1::__async_func<realm::_impl::ExternalCommitHelper::ExternalCommitHelper(realm::_impl::RealmCoordinator&)::$_0>::operator()() + 92668 (future:2321)
3   Realm                         0x0000000104bf2984 std::__1::__async_assoc_state<void, std::__1::__async_func<realm::_impl::ExternalCommitHelper::ExternalCommitHelper(realm::_impl::RealmCoordinator&)::$_0> >::__execute() + 92548 (future:1040)
4   Realm                         0x0000000104bf2b34 std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, 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*) + 92980 (thread:348)
5   libsystem_pthread.dylib       0x00000001863542b4 _pthread_body + 308
6   libsystem_pthread.dylib       0x0000000186354180 _pthread_body + 0
7   libsystem_pthread.dylib       0x0000000186352b74 thread_start + 4


Thread 4 name:  GAIThread  Dispatch queue: SQLQueue 0x105b1c040 for googleanalytics-v3.sql
Thread 4:
0   libsystem_kernel.dylib         0x0000000186240138 __psynch_mutexwait + 8
1   libsystem_pthread.dylib       0x000000018635b960 _pthread_mutex_lock_wait + 96
2   libsystem_pthread.dylib       0x000000018635b8a4 _pthread_mutex_lock_slow$VARIANT$armv81 + 244
3   CoreFoundation                 0x00000001866c77a8 -[CFPrefsSearchListSource alreadylocked_copyDictionary] + 360
4   CoreFoundation                 0x00000001866c5a60 -[CFPrefsSearchListSource alreadylocked_copyValueForKey:] + 88
5   CoreFoundation                 0x0000000186764218 -[CFPrefsSource copyValueForKey:] + 64
6   CoreFoundation                 0x000000018676e2b4 __76-[_CFXPreferences copyAppValueForKey:identifier:container:configurationURL:]_block_invoke + 40
7   CoreFoundation                 0x00000001866c92f0 __108-[_CFXPreferences+ 922352 (SearchListAdditions) withSearchListForIdentifier:container:cloudConfigurationURL:perform:]_block_invoke + 268
8   CoreFoundation                 0x00000001866c8b0c normalizeQuintuplet + 356
9   CoreFoundation                 0x00000001866c91d8 -[_CFXPreferences+ 922072 (SearchListAdditions) withSearchListForIdentifier:container:cloudConfigurationURL:perform:] + 108
10  CoreFoundation                 0x000000018676e24c -[_CFXPreferences copyAppValueForKey:identifier:container:configurationURL:] + 124
11  CoreFoundation                 0x0000000186770ae8 _CFPreferencesCopyAppValueWithContainer + 116
12  Foundation                     0x0000000187025900 -[NSUserDefaults+ 51456 (NSUserDefaults) objectForKey:] + 52
13  Foundation                     0x000000018707ad68 _decodeObject + 116
14  Foundation                     0x000000018707aac0 +[NSKeyedUnarchiver unarchiveObjectWithData:] + 88
15  CoreData                       0x0000000189034794 _prepareResultsFromResultSet + 3852
16  CoreData                       0x00000001890313f8 newFetchedRowsForFetchPlan_MT + 1832
17  CoreData                       0x00000001890df20c _executeFetchRequest + 68
18  CoreData                       0x00000001890d9af0 -[NSSQLFetchRequestContext executeRequestCore:] + 36
19  CoreData                       0x0000000188f401d4 -[NSSQLStoreRequestContext executeRequestUsingConnection:] + 248
20  CoreData                       0x0000000188fc2118 __52-[NSSQLDefaultConnectionManager handleStoreRequest:]_block_invoke + 84
21  libdispatch.dylib             0x00000001860aaa14 _dispatch_client_callout + 16
22  libdispatch.dylib             0x00000001860e7d4c _dispatch_queue_barrier_sync_invoke_and_complete + 56
23  CoreData                       0x0000000188fc2014 -[NSSQLDefaultConnectionManager handleStoreRequest:] + 256
24  CoreData                       0x00000001890b2524 -[NSSQLCoreDispatchManager routeStoreRequest:] + 264
25  CoreData                       0x0000000188ff3fdc -[NSSQLCore dispatchRequest:withRetries:] + 236
26  CoreData                       0x0000000188ff038c -[NSSQLCore processFetchRequest:inContext:] + 108
27  CoreData                       0x0000000188ed2bb4 -[NSSQLCore executeRequest:withContext:error:] + 496
28  CoreData                       0x0000000188fcf1fc __65-[NSPersistentStoreCoordinator executeRequest:withContext:error:]_block_invoke + 1340
29  CoreData                       0x0000000188fc7cc4 -[NSPersistentStoreCoordinator _routeHeavyweightBlock:] + 268
30  CoreData                       0x0000000188ed2680 -[NSPersistentStoreCoordinator executeRequest:withContext:error:] + 416
31  CoreData                       0x0000000188ed115c -[NSManagedObjectContext executeFetchRequest:error:] + 580
32  THEAPP                         0x0000000104856c94 __41-[GAIDataStore fetchHitsWithLimit:error:]_block_invoke + 978068 (GAIDataStore.m:425)
33  THEAPP                         0x0000000104855228 -[GAIDataStore performBlockAndWait:withError:] + 971304 (GAIDataStore.m:0)
34  THEAPP                         0x0000000104856ba0 -[GAIDataStore fetchHitsWithLimit:error:] + 977824 (GAIDataStore.m:414)
35  THEAPP                         0x0000000104864330 -[GAIBatchingDispatcher nextPendingHits] + 1033008 (GAIBatchingDispatcher.m:484)
36  THEAPP                         0x00000001048639bc -[GAIBatchingDispatcher hitsForDispatch] + 1030588 (GAIBatchingDispatcher.m:367)
37  THEAPP                         0x0000000104864f20 -[GAIBatchingDispatcher dispatchWithCompletionHandler:] + 1036064 (GAIBatchingDispatcher.m:587)
38  Foundation                     0x00000001871285b8 __NSFireTimer + 88
39  CoreFoundation                 0x00000001866d3dc0 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 28
40  CoreFoundation                 0x00000001866d3ae4 __CFRunLoopDoTimer + 864
41  CoreFoundation                 0x00000001866d32e4 __CFRunLoopDoTimers + 248
42  CoreFoundation                 0x00000001866d0ecc __CFRunLoopRun + 1928
43  CoreFoundation                 0x00000001865f0c58 CFRunLoopRunSpecific + 436
44  Foundation                     0x0000000187025594 -[NSRunLoop+ 50580 (NSRunLoop) runMode:beforeDate:] + 304
45  Foundation                     0x000000018707756c -[NSRunLoop+ 386412 (NSRunLoop) run] + 88
46  THEAPP                         0x00000001048530c0 +[GAI threadMain:] + 962752 (GAI.m:241)
47  Foundation                     0x00000001871270f4 __NSThread__start__ + 996
48  libsystem_pthread.dylib       0x00000001863542b4 _pthread_body + 308
49  libsystem_pthread.dylib       0x0000000186354180 _pthread_body + 0
50  libsystem_pthread.dylib       0x0000000186352b74 thread_start + 4


Thread 5:
0   libsystem_kernel.dylib         0x00000001862400f0 __psynch_cvwait + 8
1   libsystem_pthread.dylib       0x000000018635af74 _pthread_cond_wait$VARIANT$armv81 + 624
2   libc++.1.dylib                 0x00000001858f7f34 std::__1::condition_variable::__do_timed_wait+ 32564 (std::__1::unique_lock<std::__1::mutex>&, std::__1::chrono::time_point<std::__1::chrono::system_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000000l> > >) + 96
3   JavaScriptCore                 0x000000018da99168 std::__1::cv_status std::__1::condition_variable::wait_until<std::__1::chrono::steady_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000000l> > >+ 10133864 (std::__1::unique_lock<std::__1::mutex>&, std::__1::chrono::time_point<std::__1::chrono::steady_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000000l> > > const&) + 124
4   JavaScriptCore                 0x000000018da9903c std::__1::cv_status std::__1::condition_variable_any::wait_until<std::__1::unique_lock<bmalloc::Mutex>, std::__1::chrono::steady_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000000l> > >+ 10133564 (std::__1::unique_lock<bmalloc::Mutex>&, std::__1::chrono::time_point<std::__1::chrono::steady_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000000l> > > const&) + 108
5   JavaScriptCore                 0x000000018da98ec0 bmalloc::AsyncTask<bmalloc::Heap, void (bmalloc::Heap::*)()>::threadRunLoop+ 10133184 () + 280
6   JavaScriptCore                 0x000000018da991b8 void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (*)(bmalloc::AsyncTask<bmalloc::Heap, void (bmalloc::Heap::*)()>*), bmalloc::AsyncTask<bmalloc::Heap, void (bmalloc::Heap::*)()>*> >+ 10133944 (void*) + 44
7   libsystem_pthread.dylib       0x00000001863542b4 _pthread_body + 308
8   libsystem_pthread.dylib       0x0000000186354180 _pthread_body + 0
9   libsystem_pthread.dylib       0x0000000186352b74 thread_start + 4


Thread 6 name:  com.apple.NSURLConnectionLoader
Thread 6:
0   libsystem_kernel.dylib         0x000000018621f568 mach_msg_trap + 8
1   libsystem_kernel.dylib         0x000000018621f3e0 mach_msg + 72
2   CoreFoundation                 0x00000001866d3108 __CFRunLoopServiceMachPort + 196
3   CoreFoundation                 0x00000001866d0cd4 __CFRunLoopRun + 1424
4   CoreFoundation                 0x00000001865f0c58 CFRunLoopRunSpecific + 436
5   CFNetwork                     0x0000000186edfb08 -[__CoreSchedulingSetRunnable runForever] + 780
6   Foundation                     0x00000001871270f4 __NSThread__start__ + 996
7   libsystem_pthread.dylib       0x00000001863542b4 _pthread_body + 308
8   libsystem_pthread.dylib       0x0000000186354180 _pthread_body + 0
9   libsystem_pthread.dylib       0x0000000186352b74 thread_start + 4


Thread 7 name:  AVAudioSession Notify Thread
Thread 7:
0   libsystem_kernel.dylib         0x000000018621f568 mach_msg_trap + 8
1   libsystem_kernel.dylib         0x000000018621f3e0 mach_msg + 72
2   CoreFoundation                 0x00000001866d3108 __CFRunLoopServiceMachPort + 196
3   CoreFoundation                 0x00000001866d0cd4 __CFRunLoopRun + 1424
4   CoreFoundation                 0x00000001865f0c58 CFRunLoopRunSpecific + 436
5   AVFAudio                       0x000000018bf59cd4 GenericRunLoopThread::Entry+ 564436 (void*) + 164
6   AVFAudio                       0x000000018bf84740 CAPThread::Entry+ 739136 (CAPThread*) + 84
7   libsystem_pthread.dylib       0x00000001863542b4 _pthread_body + 308
8   libsystem_pthread.dylib       0x0000000186354180 _pthread_body + 0
9   libsystem_pthread.dylib       0x0000000186352b74 thread_start + 4


Thread 8:
0   libsystem_pthread.dylib       0x0000000186352b68 start_wqthread + 0


Thread 9:
0   libsystem_pthread.dylib       0x0000000186352b68 start_wqthread + 0


Thread 0 crashed with ARM Thread State (64-bit):
    x0: 0x0000000010004005   x1: 0x000000000400400e   x2: 0x0000000000000000   x3: 0x0000000000004000
    x4: 0x0000000000009a3f   x5: 0x0000000000000000   x6: 0x0000000000013857   x7: 0x0000000000000403
    x8: 0x00000000fffffbbf   x9: 0x000000000400400e  x10: 0x000000016b6e8000  x11: 0x000000016b68d090
   x12: 0x0000000000000018  x13: 0x000000016b68d090  x14: 0x0000000000000080  x15: 0x0000000000000100
   x16: 0xffffffffffffffe1  x17: 0x0000000186696804  x18: 0xfffffff0270dd260  x19: 0x0000000000013857
   x20: 0x0000000000000000  x21: 0x0000000000009a3f  x22: 0x0000000000004000  x23: 0x000000016b689090
   x24: 0x000000000400400e  x25: 0x0000000000000000  x26: 0x000000000400400e  x27: 0x000000000400400e
   x28: 0x00000001860dec14   fp: 0x000000016b689080   lr: 0x000000018621f3e0
    sp: 0x000000016b689030   pc: 0x000000018621f568 cpsr: 0x20000000


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0x188d81000 - 0x188dacfff MobileKeyBag arm64  <d8ce3418ab5b3832906e77aa9e3c9aad> /System/Library/PrivateFrameworks/MobileKeyBag.framework/MobileKeyBag
0x188dad000 - 0x188de1fff BackBoardServices arm64  <2b30bebf7da7379db6b6538ca533fd6b> /System/Library/PrivateFrameworks/BackBoardServices.framework/BackBoardServices
0x188de2000 - 0x188e3dfff FrontBoardServices arm64  <5bff8665f950326a8ad86be07a66a48a> /System/Library/PrivateFrameworks/FrontBoardServices.framework/FrontBoardServices
0x188e3e000 - 0x188e7afff SpringBoardServices arm64  <415fae0b30393d0d92bf23dc22de21c4> /System/Library/PrivateFrameworks/SpringBoardServices.framework/SpringBoardServices
0x188e7b000 - 0x188e89fff PowerLog arm64  <83c23c8e972438b79e688c4d455b1b5e> /System/Library/PrivateFrameworks/PowerLog.framework/PowerLog
0x188e8a000 - 0x188ea7fff CommonUtilities arm64  <dcd92acd9a14345e9b63801706e4a82e> /System/Library/PrivateFrameworks/CommonUtilities.framework/CommonUtilities
0x188ea8000 - 0x188eb3fff liblockdown.dylib arm64  <2fec7d5a759c32f293936f78220c1fc4> /usr/lib/liblockdown.dylib
0x188eb4000 - 0x1891b6fff CoreData arm64  <b972e9f8b7de3a568acb4ed8216f0b76> /System/Library/Frameworks/CoreData.framework/CoreData
0x1891b7000 - 0x1891bdfff TCC arm64  <06384f9076eb3e06a7d2a883d6007b3d> /System/Library/PrivateFrameworks/TCC.framework/TCC
0x1891be000 - 0x1891c5fff libcupolicy.dylib arm64  <e6b23e36e1a335ad974f6b35ba2b033b> /usr/lib/libcupolicy.dylib
0x1891c6000 - 0x189252fff CoreTelephony arm64  <e63112dd995a333ca54d3f6d60ae18c7> /System/Library/Frameworks/CoreTelephony.framework/CoreTelephony
0x189253000 - 0x1892a9fff Accounts arm64  <3f8159d915823051a17536c6b21e81a9> /System/Library/Frameworks/Accounts.framework/Accounts
0x1892aa000 - 0x1892d3fff AppleSauce arm64  <4b81009f219e3f3794d3ff93ddcd0547> /System/Library/PrivateFrameworks/AppleSauce.framework/AppleSauce
0x1892d4000 - 0x1892dcfff DataMigration arm64  <e98907cbf67e35ca998fab8c64f92eea> /System/Library/PrivateFrameworks/DataMigration.framework/DataMigration
0x1892dd000 - 0x1892e3fff Netrb arm64  <9f8ebcf99af53a7087add608b6fb9c2a> /System/Library/PrivateFrameworks/Netrb.framework/Netrb
0x1892e4000 - 0x189317fff PersistentConnection arm64  <c00b010864ca32d78dadbf487d8fb9f7> /System/Library/PrivateFrameworks/PersistentConnection.framework/PersistentConnection
0x189318000 - 0x189329fff libmis.dylib arm64  <1885af6da98d3997abff70b062548010> /usr/lib/libmis.dylib
0x18932a000 - 0x18942afff ManagedConfiguration arm64  <b37e31dfe0b4340f86d707d09f210545> /System/Library/PrivateFrameworks/ManagedConfiguration.framework/ManagedConfiguration
0x18942b000 - 0x189430fff libReverseProxyDevice.dylib arm64  <d6cfe7cabd433fe5a8bd77fba606479a> /usr/lib/libReverseProxyDevice.dylib
0x189431000 - 0x189442fff libamsupport.dylib arm64  <48a69db1f895324d8debac434913a4e5> /usr/lib/libamsupport.dylib
0x189443000 - 0x189448fff libCoreVMClient.dylib arm64  <017bacb6b7e83fdda154764e0492358a> /System/Library/Frameworks/OpenGLES.framework/libCoreVMClient.dylib
0x189449000 - 0x18944afff libCVMSPluginSupport.dylib arm64  <79591b228c133dc7a93fcdb529f5c1c9> /System/Library/Frameworks/OpenGLES.framework/libCVMSPluginSupport.dylib
0x18944b000 - 0x18944efff libutil.dylib arm64  <b82455fcf10c34ddbe0871d7e6998071> /usr/lib/libutil.dylib
0x18944f000 - 0x189490fff libGLImage.dylib arm64  <9ac83085267733acb9bc652dd70dcc2d> /System/Library/Frameworks/OpenGLES.framework/libGLImage.dylib
0x189491000 - 0x189501fff APFS arm64  <a56b1bb534613a6da50d098073bfe7a7> /System/Library/PrivateFrameworks/APFS.framework/APFS
0x189502000 - 0x189533fff MediaKit arm64  <3b199804d91e3afcb08a2698062cff65> /System/Library/PrivateFrameworks/MediaKit.framework/MediaKit
0x189534000 - 0x18954cfff libSERestoreInfo.dylib arm64  <25abfa4121b03a25b5422fa6ba16b695> /usr/lib/updaters/libSERestoreInfo.dylib
0x189551000 - 0x18958dfff DiskImages arm64  <c78798bf47263e8d8ba1403fa9753a41> /System/Library/PrivateFrameworks/DiskImages.framework/DiskImages
0x18958e000 - 0x189598fff libGFXShared.dylib arm64  <425823fa3f663785af7e7e72e74a2eee> /System/Library/Frameworks/OpenGLES.framework/libGFXShared.dylib
0x189599000 - 0x1895dffff libauthinstall.dylib arm64  <51c4aba4fa7f376dbee944ee466f56c1> /usr/lib/libauthinstall.dylib
0x1895e0000 - 0x1895e8fff IOMobileFramebuffer arm64  <e77d0723d9ca3bd49aed5354023ac013> /System/Library/PrivateFrameworks/IOMobileFramebuffer.framework/IOMobileFramebuffer
0x1895e9000 - 0x1895f4fff OpenGLES arm64  <e2869e8b79a63c9ca81291d5a6714ef6> /System/Library/Frameworks/OpenGLES.framework/OpenGLES
0x1895f5000 - 0x18967cfff ColorSync arm64  <174c246784a4333db343d29ca59affcb> /System/Library/PrivateFrameworks/ColorSync.framework/ColorSync
0x18967d000 - 0x1896a7fff CoreVideo arm64  <69c63a3d198a34de9f343ad8e8181059> /System/Library/Frameworks/CoreVideo.framework/CoreVideo
0x1896a8000 - 0x1896a9fff libCTGreenTeaLogger.dylib arm64  <e5ad1c68080134edaf25ccea03e08a52> /usr/lib/libCTGreenTeaLogger.dylib
0x1896aa000 - 0x18980cfff CoreAudio arm64  <7ad95e096a253ff58b74a03e3f252a4e> /System/Library/Frameworks/CoreAudio.framework/CoreAudio
0x18980d000 - 0x18983bfff CoreAnalytics arm64  <be12a86b5538303fadce7fb5cac04ff5> /System/Library/PrivateFrameworks/CoreAnalytics.framework/CoreAnalytics
0x18983c000 - 0x18983ffff UserFS arm64  <52342f6a8e273c7391e327deb2ab82e4> /System/Library/PrivateFrameworks/UserFS.framework/UserFS
0x189840000 - 0x1899b3fff CoreMedia arm64  <ac554e80365734d88d03dc363716a637> /System/Library/Frameworks/CoreMedia.framework/CoreMedia
0x1899b4000 - 0x1899c6fff libprotobuf-lite.dylib arm64  <2ed5fd0c82f8337b96e17a7b1846b878> /usr/lib/libprotobuf-lite.dylib
0x1899c7000 - 0x189a2bfff libprotobuf.dylib arm64  <0a967243387e32aeb31a8b5ceeac3718> /usr/lib/libprotobuf.dylib
0x189a2c000 - 0x189d09fff libAWDSupportFramework.dylib arm64  <db0f4644d45938e39bdace7ecc5c6eeb> /usr/lib/libAWDSupportFramework.dylib
0x189d0a000 - 0x189d50fff WirelessDiagnostics arm64  <903eca346b9a357eb9d6939c5a2da02d> /System/Library/PrivateFrameworks/WirelessDiagnostics.framework/WirelessDiagnostics
0x189d51000 - 0x189e09fff ************ arm64  <d18b9ae1333e3227806dea21be49a8d2> /System/Library/Frameworks/************.framework/************
0x189e0a000 - 0x189f15fff libFontParser.dylib arm64  <d502b1402ada3abfb17dd35e3b6ccfd3> /System/Library/PrivateFrameworks/FontServices.framework/libFontParser.dylib
0x189f16000 - 0x189f17fff FontServices arm64  <0c499009fcb931d18cf6bfdc1af51684> /System/Library/PrivateFrameworks/FontServices.framework/FontServices
0x189f18000 - 0x18a067fff CoreText arm64  <3cb200fd11ab3102b01a9aab2730a871> /System/Library/Frameworks/CoreText.framework/CoreText
0x18a068000 - 0x18a077fff IntlPreferences arm64  <407354c5c0f03388a2e8ef921d092bf2> /System/Library/PrivateFrameworks/IntlPreferences.framework/IntlPreferences
0x18a078000 - 0x18a080fff RTCReporting arm64  <2710371c2d763bde99c5e3ce763cebf9> /System/Library/PrivateFrameworks/RTCReporting.framework/RTCReporting
0x18a081000 - 0x18a0effff CoreBrightness arm64  <ac737e260dda338687d75091a549cbe7> /System/Library/PrivateFrameworks/CoreBrightness.framework/CoreBrightness
0x18a0f0000 - 0x18a0fbfff libAudioStatistics.dylib arm64  <f144e9f449f0366d903c07dc7042e1bb> /usr/lib/libAudioStatistics.dylib
0x18a0fc000 - 0x18a64cfff AudioToolbox arm64  <32fc6cb60ab531a892ee7db6030dcee9> /System/Library/Frameworks/AudioToolbox.framework/AudioToolbox
0x18a64d000 - 0x18a87dfff QuartzCore arm64  <0e7efded7b69323094142d876969c3ff> /System/Library/Frameworks/QuartzCore.framework/QuartzCore
0x18a87e000 - 0x18a889fff MediaAccessibility arm64  <c08f2d8d22ad32e696bbfe19c1f00132> /System/Library/Frameworks/MediaAccessibility.framework/MediaAccessibility
0x18a88a000 - 0x18a97cfff libiconv.2.dylib arm64  <28fec549f7f6396483fb3b04c800adcb> /usr/lib/libiconv.2.dylib
0x18a97d000 - 0x18a999fff NetworkStatistics arm64  <67dd3f90fc933567af5f336e36a3f69a> /System/Library/PrivateFrameworks/NetworkStatistics.framework/NetworkStatistics
0x18a99a000 - 0x18a9affff MPSCore arm64  <2b8da25dee323cb0871eb5839266c6b1> /System/Library/Frameworks/MetalPerformanceShaders.framework/Frameworks/MPSCore.framework/MPSCore
0x18a9b0000 - 0x18aa14fff MPSImage arm64  <c54b04d27c9639958942abdf2b0aa21a> /System/Library/Frameworks/MetalPerformanceShaders.framework/Frameworks/MPSImage.framework/MPSImage
0x18aa15000 - 0x18aa35fff MPSMatrix arm64  <7f20afd02853372eaeac3604ab798ca9> /System/Library/Frameworks/MetalPerformanceShaders.framework/Frameworks/MPSMatrix.framework/MPSMatrix
0x18aa36000 - 0x18aa44fff CoreAUC arm64  <24c1f952294f3d769d3b2d3d3df002f9> /System/Library/PrivateFrameworks/CoreAUC.framework/CoreAUC
0x18aa45000 - 0x18b0cafff MediaToolbox arm64  <a6ee11cab3b83741ba23824098c0765d> /System/Library/Frameworks/MediaToolbox.framework/MediaToolbox
0x18b0cb000 - 0x18b191fff MPSNeuralNetwork arm64  <e9b49812899e39b98e4f16b1e4929859> /System/Library/Frameworks/MetalPerformanceShaders.framework/Frameworks/MPSNeuralNetwork.framework/MPSNeuralNetwork
0x18b192000 - 0x18b192fff MetalPerformanceShaders arm64  <968c8d8650a6345e99c11a24d4908a14> /System/Library/Frameworks/MetalPerformanceShaders.framework/MetalPerformanceShaders
0x18b193000 - 0x18b5c6fff FaceCore arm64  <ce35d4571e5032258ca94f23e53a1a16> /System/Library/PrivateFrameworks/FaceCore.framework/FaceCore
0x18b5c7000 - 0x18b5d4fff GraphVisualizer arm64  <9731b1a2362e35e5b47495a6f4a49d31> /System/Library/PrivateFrameworks/GraphVisualizer.framework/GraphVisualizer
0x18b5d5000 - 0x18b77afff libFosl_dynamic.dylib arm64  <8dade3ca46eb36ba918cabaae25e7279> /usr/lib/libFosl_dynamic.dylib
0x18b77b000 - 0x18b9e0fff CoreImage arm64  <708015be329e31eabd93df07dec18a17> /System/Library/Frameworks/CoreImage.framework/CoreImage
0x18b9e1000 - 0x18bbcffff CoreMotion arm64  <168555a078273fb090092d49d26d931a> /System/Library/Frameworks/CoreMotion.framework/CoreMotion
0x18bbff000 - 0x18bc21fff PlugInKit arm64  <9a0fc8c71da23cbaac48ef7266d3b164> /System/Library/PrivateFrameworks/PlugInKit.framework/PlugInKit
0x18bc22000 - 0x18be4cfff ********* arm64  <b7db9c6fd6c93fd9b6e11e7b453d9a8d> /System/Library/PrivateFrameworks/*********.framework/*********
0x18be4d000 - 0x18becffff Quagga arm64  <311b83d6d2f338d586facf10f1a90cd2> /System/Library/PrivateFrameworks/Quagga.framework/Quagga
0x18bed0000 - 0x18bfc9fff AVFAudio arm64  <96ab57ad22ea36f5ad3c8718c1ab8764> /System/Library/Frameworks/AVFoundation.framework/Frameworks/AVFAudio.framework/AVFAudio
0x18bfca000 - 0x18c1b8fff AVFoundation arm64  <48a63876248b347bb20e36798bc04115> /System/Library/Frameworks/AVFoundation.framework/AVFoundation
0x18c1dd000 - 0x18c202fff StreamingZip arm64  <dacb59888b7f31a39e95cf0ea3a741ef> /System/Library/PrivateFrameworks/StreamingZip.framework/StreamingZip
0x18c203000 - 0x18c214fff CoreEmoji arm64  <0fed33cbda37338b9a43e1ef58c8e0f2> /System/Library/PrivateFrameworks/CoreEmoji.framework/CoreEmoji
0x18c264000 - 0x18c26bfff SymptomDiagnosticReporter arm64  <c1f54dbc49c53abbbe651644b610c4b0> /System/Library/PrivateFrameworks/SymptomDiagnosticReporter.framework/SymptomDiagnosticReporter
0x18cb6e000 - 0x18cb85fff MobileAsset arm64  <4c1572513f59389e84081a755103547b> /System/Library/PrivateFrameworks/MobileAsset.framework/MobileAsset
0x18cb86000 - 0x18cbc7fff Lexicon arm64  <3de08451c03d3ad082074fd27e7647d4> /System/Library/PrivateFrameworks/Lexicon.framework/Lexicon
0x18cbc8000 - 0x18cbd8fff libcmph.dylib arm64  <8b492aa79dc5318481752d5cba68e84b> /usr/lib/libcmph.dylib
0x18cbd9000 - 0x18ccf5fff LanguageModeling arm64  <a0b0121d2e253a4993a81f1052d1aa2c> /System/Library/PrivateFrameworks/LanguageModeling.framework/LanguageModeling
0x18ccf6000 - 0x18cd0dfff libmarisa.dylib arm64  <948c4447eef032a2bd7fdb0d5860359c> /usr/lib/libmarisa.dylib
0x18cdaa000 - 0x18cdb5fff libChineseTokenizer.dylib arm64  <54b3896b7e3c37d7a2aa5cd17ea3b4fd> /usr/lib/libChineseTokenizer.dylib
0x18cdb6000 - 0x18ce63fff libmecab_em.dylib arm64  <0a7c2fd4dd613449a0bdae35e1c05621> /usr/lib/libmecab_em.dylib
0x18ce64000 - 0x18ce65fff libThaiTokenizer.dylib arm64  <05630da4695731c2a45c765e3f71b1fe> /usr/lib/libThaiTokenizer.dylib
0x18ce66000 - 0x18ce6afff libgermantok.dylib arm64  <b61ca93824353a36954523113f1be1a4> /usr/lib/libgermantok.dylib
0x18ce6b000 - 0x18cec3fff CoreNLP arm64  <631fdf115f0c3047a3ca6dd7b28c073b> /System/Library/PrivateFrameworks/CoreNLP.framework/CoreNLP
0x18cec4000 - 0x18d082fff MobileSpotlightIndex arm64  <cd13d8305e4230e6b001ff9d173470c3> /System/Library/PrivateFrameworks/MobileSpotlightIndex.framework/MobileSpotlightIndex
0x18d083000 - 0x18d0e2fff CoreSpotlight arm64  <148c4e10173239958c0dae8cec599705> /System/Library/Frameworks/CoreSpotlight.framework/CoreSpotlight
0x18d0ef000 - 0x18db24fff JavaScriptCore arm64  <e5e2cd24ee8e39a5908c7512a93dbc4f> /System/Library/Frameworks/JavaScriptCore.framework/JavaScriptCore
0x18db2b000 - 0x18dba5fff libate.dylib arm64  <bb4173dd632f3d9baf425608ec3ad1a7> /usr/lib/libate.dylib
0x18dba6000 - 0x18dc48fff TextureIO arm64  <d5473c10ba4c31f29814c5940d66f041> /System/Library/PrivateFrameworks/TextureIO.framework/TextureIO
0x18dc49000 - 0x18dd13fff CoreUI arm64  <8e5892440df03a3f9342ba386f3c8012> /System/Library/PrivateFrameworks/CoreUI.framework/CoreUI
0x18dd14000 - 0x18dd1dfff MobileIcons arm64  <8d72c789b63c3d9eb0236814a909a473> /System/Library/PrivateFrameworks/MobileIcons.framework/MobileIcons
0x18dd2d000 - 0x18dd86fff TextInput arm64  <5e1c89ec1e1c310caa79b707ee359048> /System/Library/PrivateFrameworks/TextInput.framework/TextInput
0x18dde6000 - 0x18de7bfff FileProvider arm64  <81d2b19a8fe03251acd4b816dfd08908> /System/Library/Frameworks/FileProvider.framework/FileProvider
0x18e055000 - 0x18e069fff libAccessibility.dylib arm64  <04185c7e9c1e340da5c2bccb2ca2b1af> /usr/lib/libAccessibility.dylib
0x18e06a000 - 0x18e4c2fff libwebrtc.dylib arm64  <9c780252d56939d1bc15e93523a790a2> /System/Library/PrivateFrameworks/WebCore.framework/Frameworks/libwebrtc.dylib
0x18e524000 - 0x18f941fff WebCore arm64  <efe4ff69a90238958ea8d3cfe946c772> /System/Library/PrivateFrameworks/WebCore.framework/WebCore
0x18f942000 - 0x18fab5fff WebKitLegacy arm64  <3806037d085136809a33f0fd56b200e2> /System/Library/PrivateFrameworks/WebKitLegacy.framework/WebKitLegacy
0x18fbd0000 - 0x18fbfcfff UserNotifications arm64  <1acc9bc755ae33708ad7a5eeadf6b8ec> /System/Library/Frameworks/UserNotifications.framework/UserNotifications
0x18fc82000 - 0x18fcd5fff DocumentManager arm64  <6753460517ce35f1a33d34fe9819ca81> /System/Library/Frameworks/UIKit.framework/Frameworks/DocumentManager.framework/DocumentManager
0x18fcd6000 - 0x190d5bfff UIKit arm64  <1ae0c6d9279b3ac4a7e10bf3a63a0692> /System/Library/Frameworks/UIKit.framework/UIKit
0x190d5c000 - 0x190d6dfff DocumentManagerCore arm64  <051e2c78e43f3700af20321c6e289322> /System/Library/PrivateFrameworks/DocumentManagerCore.framework/DocumentManagerCore
0x190d6e000 - 0x190d72fff HangTracer arm64  <f66e4e75e8073b9290d9723d324edb88> /System/Library/PrivateFrameworks/HangTracer.framework/HangTracer
0x190d73000 - 0x190dc5fff PhysicsKit arm64  <469bfd49cb5636da8a84d78ba983642c> /System/Library/PrivateFrameworks/PhysicsKit.framework/PhysicsKit
0x190dc6000 - 0x190dc8fff StudyLog arm64  <9b3ba7d0a1dd3b1da0b003c214cfc816> /System/Library/PrivateFrameworks/StudyLog.framework/StudyLog
0x190dc9000 - 0x190ea9fff UIFoundation arm64  <fa727d25bd7432f3afe426784ff9cdd1> /System/Library/PrivateFrameworks/UIFoundation.framework/UIFoundation
0x190fb8000 - 0x191081fff Network arm64  <64b464c46498305a8f6d0522bf0e112b> /System/Library/PrivateFrameworks/Network.framework/Network
0x192020000 - 0x192036fff UserManagement arm64  <fa80a3eee8ed3df3a9b0621a317b41b5> /System/Library/PrivateFrameworks/UserManagement.framework/UserManagement
0x195127000 - 0x19512bfff CoreOptimization arm64  <6e61942f08953dd79fd44cc9d4d744f1> /System/Library/PrivateFrameworks/CoreOptimization.framework/CoreOptimization
0x19516a000 - 0x1951c4fff CorePrediction arm64  <e9db8bd625803d5cadb30d12724983af> /System/Library/PrivateFrameworks/CorePrediction.framework/CorePrediction
0x195572000 - 0x19564efff CorePDF arm64  <27f58f27493a30c3ad6b2f8f2b5b464e> /System/Library/PrivateFrameworks/CorePDF.framework/CorePDF
0x1958b0000 - 0x195c66fff WebKit arm64  <c24dc092d27d324cb755db1d25110d33> /System/Library/Frameworks/WebKit.framework/WebKit
0x195d21000 - 0x195d26fff ConstantClasses arm64  <ba66372594cb3a2b8db141e6eb25ce2e> /System/Library/PrivateFrameworks/ConstantClasses.framework/ConstantClasses
0x1962e8000 - 0x1962e8fff AdSupport arm64  <52aeb59762cc30399d7dd506a9739686> /System/Library/Frameworks/AdSupport.framework/AdSupport
0x1a5af0000 - 0x1a5da5fff RawCamera arm64  <ecccce417469344d8505421096d3c602> /System/Library/CoreServices/RawCamera.bundle/RawCamera
0x1a5df6000 - 0x1a5e0afff libCGInterfaces.dylib arm64  <fa21578480423183907f3bd84e809893> /System/Library/Frameworks/Accelerate.framework/Frameworks/vImage.framework/Libraries/libCGInterfaces.dylib
0x1a8356000 - 0x1a837dfff CoreServicesInternal arm64  <0927f80bd9de335e9ce3eb812e695e6a> /System/Library/PrivateFrameworks/CoreServicesInternal.framework/CoreServicesInternal
0x1a8950000 - 0x1a8961fff libGSFontCache.dylib arm64  <50b74f1d848d3bb693fedc5ec5abcdd4> /System/Library/PrivateFrameworks/FontServices.framework/libGSFontCache.dylib
0x1a8962000 - 0x1a8994fff libTrueTypeScaler.dylib arm64  <368042c6615c3311b21a920e048e67f9> /System/Library/PrivateFrameworks/FontServices.framework/libTrueTypeScaler.dylib
0x1aa17a000 - 0x1aa17dfff InternationalSupport arm64  <ee6d1235952e38c5a2cceb4377192f5b> /System/Library/PrivateFrameworks/InternationalSupport.framework/InternationalSupport
0x1abef2000 - 0x1abef7fff TextInputUI arm64  <a9ccf8c19885389abec1e24b4bae422f> /System/Library/PrivateFrameworks/TextInputUI.framework/TextInputUI
0x1ae0ed000 - 0x1ae11efff libclosured.dylib arm64  <aefc8840686d30a88277d7efcb70abaf> /usr/lib/closure/libclosured.dylib

Thanks. Alas something has munged the crash report to make it less helpful (I have an internal tool that pulls apart crash reports but it spat the dummy on this). It could be DevForums or it could be the redactions you did )-:

Can you send me a copy of the crash report via email? My email address is in my signature. Please reference this thread so I know the context.

Share and Enjoy
—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

let myEmail = "eskimo" + "1" + "@apple.com"

I've e-mailed you the logs as they were. Thanks for finding time to help with this.

I've e-mailed you the logs as they were.

Thanks. Alas, it turns out that it wasn’t your redactions that were getting in the way, meaning that my internal tool didn’t yield anything useful.

Which brings me back to what I suggested on that other thread, namely that this looks like an OS bug and you should file it as such. I’d appreciate you posting your bug number, just for the record [1].

Share and Enjoy
—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

let myEmail = "eskimo" + "1" + "@apple.com"

[1] If the person on the other thread had posted their bug, I may have access to more info on this now )-:

My bug number at Apple Bug Reporter is 38857341.

My bug number at Apple Bug Reporter is 38857341.

Thanks for that.

I learnt a bit more about the underlying cause of this problem yesterday. The recursion visible in the crash report’s backtrace is actually a

CFPreferences

retry mechanism. On modern systems

CFPreferences

is a client library that IPCs over to a daemon (

cfprefsd

) which does the real work. In this case

cfprefsd

has failed, so the client library is retrying. It seems that in your case these retries take long enough that they invoke the ire the watchdog.

The only remaining mystery is why

cfprefsd

has failed. It’s hard to say for sure but a common cause is that someone has saved a ridiculously-sized preference and that has caused

cfprefsd

to exceed its memory budget. If you have access to a machine that’s crashing like this, you should look to see if there are any relevant diagnostics related to

cfprefsd

.

Finally, there’s the question of what you can do about this. My suggestion is that you audit your preferences code (any uses of

CFPreferences

,

NSUserDefaults

, or

UserDefaults

in Swift) to make sure that you’re not storing ridiculously-sized preferences.

How big is too big? Personally I try to limit myself to about 1 KiB or so. You can probably get away with anything up to around 100 KiB, but beyond that you are clearly not storing preferences and thus you need to rethink your approach.

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—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

let myEmail = "eskimo" + "1" + "@apple.com"

Thanks! This is some helpful info. I did already poke around the use of UserDefaults in our codebase, but will definitely look over it again - and analyze every use of it we have and make sure we don't ever try to store anything big.

If the above doesn't produce anything suspicous, I will also try to profile the devices that had that crash around `cfprefsd`.

Thanks again. I will report here if I find anything of interest.

Hi NeverwinterMoon,

Have you solved it? i have the same problem, our app stuck at CFPrefsPlistSource sometimes and we can not find what cause it.

The next time you reproduce this please trigger a sysdiagnose on the device and then file a bug report with the resulting log attached.

There are instructions on getting a sysdiagnose log on our Bug Reporting > Profiles and Logs page.

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—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

let myEmail = "eskimo" + "1" + "@apple.com"

hi eskimo,

Thanks very much for your reply!

We have a problem, we use UserDefaults to cache data, the .plist file size is almost up to 4M, and too many of our users feedback that they are block at app startup, typical main thread stack is as follows, how can we do, any suggestion? can we delete the .plist file at main thread when app startup ? then we can change to other cache method.

Typical main thread stack:

Call stacks of main thread 771:

CallStack00: mach_msg_trap (in libsystem_kernel.dylib) + 8

CallStack01: mach_msg (in libsystem_kernel.dylib) + 72

CallStack02: _dispatch_mach_send_and_wait_for_reply (in libdispatch.dylib) + 560

CallStack03: dispatch_mach_send_with_result_and_wait_for_reply$VARIANT$mp (in libdispatch.dylib) + 56

CallStack04: xpc_connection_send_message_with_reply_sync (in libxpc.dylib) + 196

CallStack05: __78-[CFPrefsPlistSource sendRequestNewDataMessage:toConnection:retryCount:error:]_block_invoke (in CoreFoundation) + 24

CallStack06: CFPREFERENCES_IS_WAITING_FOR_SYSTEM_CFPREFSD (in CoreFoundation) + 48

CallStack07: -[CFPrefsPlistSource sendRequestNewDataMessage:toConnection:retryCount:error:] (in CoreFoundation) + 256

CallStack08: -[CFPrefsPlistSource handleErrorReply:fromMessageSettingKey:toValue:retryCount:retryContinuation:] (in CoreFoundation) + 972

CallStack09: -[CFPrefsPlistSource handleReply:toRequestNewDataMessage:onConnection:retryCount:error:] (in CoreFoundation) + 188

CallStack10: -[CFPrefsPlistSource sendRequestNewDataMessage:toConnection:retryCount:error:] (in CoreFoundation) + 296

CallStack11: -[CFPrefsPlistSource handleErrorReply:fromMessageSettingKey:toValue:retryCount:retryContinuation:] (in CoreFoundation) + 972

CallStack12: -[CFPrefsPlistSource handleReply:toRequestNewDataMessage:onConnection:retryCount:error:] (in CoreFoundation) + 188

CallStack13: -[CFPrefsPlistSource sendRequestNewDataMessage:toConnection:retryCount:error:] (in CoreFoundation) + 296

CallStack14: -[CFPrefsPlistSource handleErrorReply:fromMessageSettingKey:toValue:retryCount:retryContinuation:] (in CoreFoundation) + 972

CallStack15: -[CFPrefsPlistSource handleReply:toRequestNewDataMessage:onConnection:retryCount:error:] (in CoreFoundation) + 188

CallStack16: -[CFPrefsPlistSource sendRequestNewDataMessage:toConnection:retryCount:error:] (in CoreFoundation) + 296

CallStack17: __50-[CFPrefsPlistSource alreadylocked_requestNewData]_block_invoke (in CoreFoundation) + 92

CallStack18: -[_CFXPreferences withConnectionForRole:performBlock:] (in CoreFoundation) + 48

CallStack19: -[CFPrefsPlistSource alreadylocked_requestNewData] (in CoreFoundation) + 272

CallStack20: -[CFPrefsPlistSource generationCount] (in CoreFoundation) + 548

CallStack21: -[CFPrefsSearchListSource handleReply:toRequestNewDataMessage:onConnection:retryCount:error:] (in CoreFoundation) + 132

CallStack22: __80-[CFPrefsSearchListSource alreadylocked_generationCountFromListOfSources:count:]_block_invoke_3.143 (in CoreFoundation) + 80

CallStack23: -[_CFXPreferences withConnectionForRole:performBlock:] (in CoreFoundation) + 48

CallStack24: __80-[CFPrefsSearchListSource alreadylocked_generationCountFromListOfSources:count:]_block_invoke_2.142 (in CoreFoundation) + 124

CallStack25: _os_activity_initiate_impl (in libsystem_trace.dylib) + 60

CallStack26: __80-[CFPrefsSearchListSource alreadylocked_generationCountFromListOfSources:count:]_block_invoke.140 (in CoreFoundation) + 124

CallStack27: CFPREFERENCES_IS_WAITING_FOR_SYSTEM_CFPREFSD (in CoreFoundation) + 48

CallStack28: -[CFPrefsSearchListSource alreadylocked_generationCountFromListOfSources:count:] (in CoreFoundation) + 184

CallStack29: -[CFPrefsSearchListSource alreadylocked_copyDictionary] (in CoreFoundation) + 384

CallStack30: -[CFPrefsSearchListSource alreadylocked_copyValueForKey:] (in CoreFoundation) + 88

CallStack31: -[CFPrefsSource copyValueForKey:] (in CoreFoundation) + 64

CallStack32: __76-[_CFXPreferences copyAppValueForKey:identifier:container:configurationURL:]_block_invoke (in CoreFoundation) + 40

CallStack33: __108-[_CFXPreferences(SearchListAdditions) withSearchListForIdentifier:container:cloudConfigurationURL:perform:]_block_invoke (in CoreFoundation) + 268

CallStack34: normalizeQuintuplet (in CoreFoundation) + 356

CallStack35: -[_CFXPreferences(SearchListAdditions) withSearchListForIdentifier:container:cloudConfigurationURL:perform:] (in CoreFoundation) + 108

CallStack36: -[_CFXPreferences copyAppValueForKey:identifier:container:configurationURL:] (in CoreFoundation) + 124

CallStack37: _CFPreferencesCopyAppValueWithContainer (in CoreFoundation) + 116

CallStack38: -[NSUserDefaults(NSUserDefaults) objectForKey:] (in Foundation) + 52

CallStack39: +[UIWebView initialize] (in UIKit) + 32

CallStack40: _dispatch_client_callout (in libdispatch.dylib) + 16

CallStack41: dispatch_once_f$VARIANT$mp (in libdispatch.dylib) + 60

CallStack42: __42+[UIWebView _updatePersistentStoragePaths]_block_invoke_2 (in UIKit) + 40

CallStack43: -[UITableViewCellLayoutManager defaultEditableTextFieldForCell:] (in UIKit) + 428

CallStack44: -[CDVUIWebViewEngine initWithFrame:] (in EasyHome) + 128

CallStack45: -[CDVViewController newCordovaViewWithFrame:] (in EasyHome) + 228

CallStack46: -[CDVViewController createGapView] (in EasyHome) + 168

CallStack47: -[CDVViewController viewDidLoad] (in EasyHome) + 388

CallStack48: -[FastMainViewController viewDidLoad] (in EasyHome) (FastMainViewController.m:26)

CallStack49: -[UIViewController loadViewIfRequired] (in UIKit) + 392

Can you reproduce this problem yourself?

Share and Enjoy
—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

let myEmail = "eskimo" + "1" + "@apple.com"

hi eskimo,

Thanks very much!

No, we can not reproduce it in test enviroment, and can not reproduce under startup monkey test too, we just collet those thread dumps from online users, it is random freeze at startup.

I have two questions:

1,when will iOS system will load .plist file, before main method or when we call the method of NSUserDefault?

2,can we think the .plist file is corrupt or has file hole in it after put large data in .plist file again and again? and can we delete it at startup, use "[[NSUserDefaults standardUserDefaults] removePersistentDomainForName:appDomain]"?

Another thing, i have created an DTS ticket, but no body reply to me.Follow-up: 695206164

Another thing, i have created an DTS ticket, but no body reply to me.

Indeed. Sorry about that. That incident has been assigned to one of my colleagues, who should be responding soon.

Share and Enjoy
—
Quinn “The Eskimo!”
Apple Developer Relations, Developer Technical Support, Core OS/Hardware

let myEmail = "eskimo" + "1" + "@apple.com"

Thanks very much for your info.

As i have written before, any suggestion for this problem? can we delete the possible corrupted .plist file by method removePersistentDomainForName of NSUserDefault?