sometimes I have a following warnings in my app and then app freezes and stops working.
I don't know why does this happen. Does anyone can help me?
> <Warning>: CoreAnimation: warning, deleted thread with uncommitted CATransaction; created by:
0 QuartzCore 0x32f303b3 <redacted> + 266
1 QuartzCore 0x32f30269 <redacted> + 224
2 QuartzCore 0x32f308c7 <redacted> + 30
3 QuartzCore 0x32f33bf3 <redacted> + 182
4 QuartzCore 0x32f8b985 <redacted> + 36
5 UIKit 0x3383ec57 <redacted> + 30
6 UIKit 0x334eca33 <redacted> + 114
7 UIKit 0x33413aab <redacted> + 246
8 UIKit 0x3383a6a1 <redacted> + 160
9 Program_TV_Pro 0x00017b3b -[MainMenuViewController grabURLInBackgroundForEntryFromAppDelegate] + 1166
10 Program_TV_Pro 0x000180a3 __49-[MainMenuViewController contextChannelsChanged:]_block_invoke + 138
11 libdispatch.dylib 0x3b800d1b <redacted> + 10
12 libdispatch.dylib 0x3b807d71 <redacted> + 220
13 libdispatch.dylib 0x3b807f59 <redacted> + 56
14 libsystem_pthread.dylib 0x3b942dbf _pthread_wqthread + 298
15 libsystem_pthread.dylib 0x3b942c84 start_wqthread + 8
and warning at another time:
CoreAnimation: warning, deleted thread with uncommitted CATransaction; created by:
0 QuartzCore 0x32f303b3 <redacted> + 266
1 QuartzCore 0x32f30269 <redacted> + 224
2 QuartzCore 0x32f31871 <redacted> + 24
3 QuartzCore 0x32f3207f <redacted> + 130
4 UIKit 0x3338a3d7 <redacted> + 1562
5 Program_TV_Pro 0x00115c2b -[ReplaysTableViewController downloadReplays] + 346
6 Program_TV_Pro 0x00113cbb __41-[ReplaysTableViewController viewDidLoad]_block_invoke52 + 46
7 libdispatch.dylib 0x3b800d1b <redacted> + 10
8 libdispatch.dylib 0x3b807d71 <redacted> + 220
9 libdispatch.dylib 0x3b807f59 <redacted> + 56
10 libsystem_pthread.dylib 0x3b942dbf _pthread_wqthread + 298
11 libsystem_pthread.dylib 0x3b942c84 start_wqthread + 8
Related
I've this random crash in live app. I know how to fix it. I want to know how to find out offending code as the crashlytics log doesn't show any code in my app. Is this crashlytics crash?
Since it's random crash I can't debug it.
Any pointer to find out offending code will be appreciated.
Fatal Exception: NSInternalInconsistencyException
Modifications to the layout engine must not be performed from a background thread after it has been accessed from the main thread.
Fatal Exception: NSInternalInconsistencyException
0 CoreFoundation 0x196676a48 __exceptionPreprocess
1 libobjc.A.dylib 0x19639dfa4 objc_exception_throw
2 Foundation 0x196b4cf08 -[NSISEngine tryToOptimizeReturningMutuallyExclusiveConstraints]
3 Foundation 0x196957d34 -[NSISEngine _optimizeWithoutRebuilding]
4 Foundation 0x196957c4c -[NSISEngine optimize]
5 Foundation 0x1969578c0 -[NSISEngine performPendingChangeNotifications]
6 UIKitCore 0x19ab6c9e0 -[UIView(Hierarchy) layoutSubviews]
7 UIKitCore 0x19ab7f3d0 -[UIView(CALayerDelegate) layoutSublayersOfLayer:]
8 QuartzCore 0x19d0e27dc -[CALayer layoutSublayers]
9 QuartzCore 0x19d0e8958 CA::Layer::layout_if_needed(CA::Transaction*)
10 QuartzCore 0x19d0f3578 CA::Layer::layout_and_display_if_needed(CA::Transaction*)
11 QuartzCore 0x19d03bf1c CA::Context::commit_transaction(CA::Transaction*, double)
12 QuartzCore 0x19d065c08 CA::Transaction::commit()
13 QuartzCore 0x19d066b8c CA::Transaction::release_thread(void*)
14 libsystem_pthread.dylib 0x196394fb0 _pthread_tsd_cleanup
15 libsystem_pthread.dylib 0x196391de8 _pthread_exit
16 libsystem_pthread.dylib 0x196392e7c _pthread_wqthread_legacy_worker_wrap
17 libsystem_pthread.dylib 0x196392c18 _pthread_wqthread
18 libsystem_pthread.dylib 0x196395760 start_wqthread
Crashed: com.twitter.crashlytics.ios.exception
EXC_BREAKPOINT 0x00000001962dd8e0
Crashed: com.twitter.crashlytics.ios.exception
0 myApp 0x10101f028 CLSProcessRecordAllThreads + 376 (CLSProcess.c:376)
1 myApp 0x10101f410 CLSProcessRecordAllThreads + 407 (CLSProcess.c:407)
2 myApp 0x10100f114 CLSHandler + 26 (CLSHandler.m:26)
3 myApp 0x10101d63c __CLSExceptionRecord_block_invoke + 198 (CLSException.mm:198)
4 libdispatch.dylib 0x196343184 _dispatch_client_callout + 16
5 libdispatch.dylib 0x1962f5c04 _dispatch_lane_barrier_sync_invoke_and_complete + 56
6 myApp 0x10101d0e4 CLSExceptionRecord + 205 (CLSException.mm:205)
7 myApp 0x10101cf18 CLSExceptionRecordNSException + 102 (CLSException.mm:102)
8 myApp 0x10101cb3c CLSTerminateHandler() + 258 (CLSException.mm:258)
9 libc++abi.dylib 0x196443304 std::__terminate(void (*)()) + 16
10 libc++abi.dylib 0x196442c58 __cxa_get_exception_ptr + 30
11 libc++abi.dylib 0x196442c18 __cxxabiv1::exception_cleanup_func(_Unwind_Reason_Code, _Unwind_Exception*) + 122
12 libobjc.A.dylib 0x19639e0d0 _objc_exception_destructor(void*) + 354
13 Foundation 0x196b4cf08 -[NSISEngine tryToOptimizeReturningMutuallyExclusiveConstraints] + 318
14 Foundation 0x196957d34 -[NSISEngine _optimizeWithoutRebuilding] + 68
15 Foundation 0x196957c4c -[NSISEngine optimize] + 112
16 Foundation 0x1969578c0 -[NSISEngine performPendingChangeNotifications] + 112
17 UIKitCore 0x19ab6c9e0 -[UIView(Hierarchy) layoutSubviews] + 308
18 UIKitCore 0x19ab7f3d0 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 2140
19 QuartzCore 0x19d0e27dc -[CALayer layoutSublayers] + 284
20 QuartzCore 0x19d0e8958 CA::Layer::layout_if_needed(CA::Transaction*) + 480
21 QuartzCore 0x19d0f3578 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 136
22 QuartzCore 0x19d03bf1c CA::Context::commit_transaction(CA::Transaction*, double) + 304
23 QuartzCore 0x19d065c08 CA::Transaction::commit() + 676
24 QuartzCore 0x19d066b8c CA::Transaction::release_thread(void*) + 228
25 libsystem_pthread.dylib 0x196394fb0 _pthread_tsd_cleanup + 580
26 libsystem_pthread.dylib 0x196391de8 _pthread_exit + 80
27 libsystem_pthread.dylib 0x196392e7c _pthread_wqthread_legacy_worker_wrap + 94
28 libsystem_pthread.dylib 0x196392c18 _pthread_wqthread + 420
29 libsystem_pthread.dylib 0x196395760 start_wqthread + 8
I've seen a similar stacktrace on crashes that come from Ads SDKs. Do you have and ads in your app? or WKWebviews? If yes, try to disable them and check if the crash still happens.
how can I locate the code where exception raised like below?
this only happened on few devices like iPhone6 run iOS 10
xcode stack trace screenshot
and also
Application received signal SIGSEGV (null)
0 CoreFoundation 0x00000001831e01d8 <redacted> + 148
1 libobjc.A.dylib 0x0000000181c1855c objc_exception_throw + 56
2 CoreFoundation 0x00000001831e0108 <redacted> + 0
3 xxx 0x100464a00 xxx + 4606464
4 libsystem_platform.dylib 0x000000018226f338 _sigtramp + 36
5 UIKit 0x000000018902b588 <redacted> + 80
6 QuartzCore 0x00000001864ee448 <redacted> + 208
7 QuartzCore 0x00000001864e30e8 <redacted> + 292
8 QuartzCore 0x00000001864e2fa8 <redacted> + 32
9 QuartzCore 0x000000018645fc64 <redacted> + 252
10 QuartzCore 0x00000001864870d0 <redacted> + 512
11 QuartzCore 0x0000000186487af0 <redacted> + 120
12 CoreFoundation 0x000000018318d7dc <redacted> + 32
13 CoreFoundation 0x000000018318b40c <redacted> + 372
14 CoreFoundation 0x00000001830ba068 CFRunLoopRunSpecific + 476
15 WebCore 0x0000000187c5ba2c <redacted> + 456
16 libsystem_pthread.dylib 0x0000000182273860 <redacted> + 240
17 libsystem_pthread.dylib 0x0000000182273770 <redacted> + 0
18 libsystem_pthread.dylib 0x0000000182270dbc thread_start + 4
I have an odd situation where one user is repeatedly seeing crashes (on iPad 9.7 pro, under both iOS 10.0.1 and 10.0.2, not jailbroken) while entering text in a UITextField. The crash reports vary, but the most common crash is below.
I can't reproduce this or figure out what is going wrong. Any ideas on what to do or where to look to fix this? Could it be something unique to his environment? I asked the user to delete and reinstall the app, and he claims to have done so and the crashes are still happening. Thanks!
Platform: ios
Application: Next Turn
Version: 2.50 (2.12)
Issue #: 58
Date: 2016-09-25T09:19:33Z
OS Version: 10.0.2 (14A456)
Device: iPad Pro (9.7 inch)
RAM Free: 18.2%
Disk Free: 89.7%
0. Crashed: com.apple.main-thread
0 ProofReader 0x186da0624 ICfree + 60
1 ProofReader 0x186d9da08 ICspl + 3860
2 ProofReader 0x186d9da08 ICspl + 3860
3 ProofReader 0x186d9c644 PRIcs + 376
4 ProofReader 0x186da2dec PRword + 1180
5 ProofReader 0x186e164e0 -[AppleSpell(Spelling) validateWordBuffer:length:connection:] + 180
6 ProofReader 0x186e17154 -[AppleSpell(Spelling) validateWordBuffer:length:language:connection:sender:checkBase:checkDict:checkTemp:checkUser:checkNames:checkHyphens:checkIntercaps:checkOptions:forCorrection:depth:] + 820
7 ProofReader 0x186e196a0 -[AppleSpell(Spelling) validateWordBuffer:length:language:connection:sender:checkBase:checkDict:checkTemp:checkUser:checkNames:checkHyphens:checkIntercaps:checkOptions:depth:] + 92
8 ProofReader 0x186e19700 -[AppleSpell(Spelling) validateWordBuffer:length:language:connection:sender:checkBase:checkDict:checkTemp:checkNames:checkHyphens:checkIntercaps:checkOptions:depth:] + 84
9 ProofReader 0x186e1a92c -[AppleSpell(Spelling) spellServer:findMisspelledWordInString:range:languages:topLanguages:orthography:checkOrthography:mutableResults:offset:autocorrect:onlyAtInsertionPoint:initialCapitalize:autocapitalize:keyEventArray:appIdentifier:selectedRangeValue:wordCount:countOnly:correction:] + 4364
10 ProofReader 0x186db4cac -[AppleSpell spellServer:findMisspelledWordInString:languages:wordCount:countOnly:correction:] + 328
11 UIKit 0x189cd7424 <redacted> + 156
12 UIKit 0x189cd7924 <redacted> + 588
13 UIKit 0x189cd7624 <redacted> + 116
14 UIKit 0x189797ec0 <redacted> + 508
15 UIKit 0x189797c5c <redacted> + 668
16 UIKit 0x189797940 <redacted> + 32
17 UIKit 0x189797910 <redacted> + 44
18 UIKit 0x189793888 <redacted> + 4284
19 UIKit 0x189bb483c <redacted> + 64
20 UIKit 0x189bb7f44 <redacted> + 124
21 UIKit 0x189779614 <redacted> + 260
22 UIKit 0x189617b54 <redacted> + 764
23 UIKit 0x189ba7f88 <redacted> + 1100
24 UIKit 0x189ba7ae8 <redacted> + 408
25 UIKit 0x189ba6da4 <redacted> + 268
26 UIKit 0x189615d70 <redacted> + 2960
27 UIKit 0x1895e6858 <redacted> + 340
28 UIKit 0x189dd3cb8 <redacted> + 2736
29 UIKit 0x189dcd720 <redacted> + 784
30 CoreFoundation 0x183752278 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 24
31 CoreFoundation 0x183751bc0 __CFRunLoopDoSources0 + 524
32 CoreFoundation 0x18374f7c0 __CFRunLoopRun + 804
33 CoreFoundation 0x18367e048 CFRunLoopRunSpecific + 444
34 GraphicsServices 0x185101198 GSEventRunModal + 180
35 UIKit 0x189651628 <redacted> + 684
36 UIKit 0x18964c360 UIApplicationMain + 208
37 Next Turn 0x1000b3f40 main (main.m:16)
38 libdispatch.dylib 0x1826605b8 (Missing)
--
#0. Crashed: com.apple.main-thread
0 ProofReader 0x186da0624 ICfree + 60
1 ProofReader 0x186d9da08 ICspl + 3860
2 ProofReader 0x186d9da08 ICspl + 3860
3 ProofReader 0x186d9c644 PRIcs + 376
4 ProofReader 0x186da2dec PRword + 1180
5 ProofReader 0x186e164e0 -[AppleSpell(Spelling) validateWordBuffer:length:connection:] + 180
6 ProofReader 0x186e17154 -[AppleSpell(Spelling) validateWordBuffer:length:language:connection:sender:checkBase:checkDict:checkTemp:checkUser:checkNames:checkHyphens:checkIntercaps:checkOptions:forCorrection:depth:] + 820
7 ProofReader 0x186e196a0 -[AppleSpell(Spelling) validateWordBuffer:length:language:connection:sender:checkBase:checkDict:checkTemp:checkUser:checkNames:checkHyphens:checkIntercaps:checkOptions:depth:] + 92
8 ProofReader 0x186e19700 -[AppleSpell(Spelling) validateWordBuffer:length:language:connection:sender:checkBase:checkDict:checkTemp:checkNames:checkHyphens:checkIntercaps:checkOptions:depth:] + 84
9 ProofReader 0x186e1a92c -[AppleSpell(Spelling) spellServer:findMisspelledWordInString:range:languages:topLanguages:orthography:checkOrthography:mutableResults:offset:autocorrect:onlyAtInsertionPoint:initialCapitalize:autocapitalize:keyEventArray:appIdentifier:selectedRangeValue:wordCount:countOnly:correction:] + 4364
10 ProofReader 0x186db4cac -[AppleSpell spellServer:findMisspelledWordInString:languages:wordCount:countOnly:correction:] + 328
11 UIKit 0x189cd7424 <redacted> + 156
12 UIKit 0x189cd7924 <redacted> + 588
13 UIKit 0x189cd7624 <redacted> + 116
14 UIKit 0x189797ec0 <redacted> + 508
15 UIKit 0x189797c5c <redacted> + 668
16 UIKit 0x189797940 <redacted> + 32
17 UIKit 0x189797910 <redacted> + 44
18 UIKit 0x189793888 <redacted> + 4284
19 UIKit 0x189bb483c <redacted> + 64
20 UIKit 0x189bb7f44 <redacted> + 124
21 UIKit 0x189779614 <redacted> + 260
22 UIKit 0x189617b54 <redacted> + 764
23 UIKit 0x189ba7f88 <redacted> + 1100
24 UIKit 0x189ba7ae8 <redacted> + 408
25 UIKit 0x189ba6da4 <redacted> + 268
26 UIKit 0x189615d70 <redacted> + 2960
27 UIKit 0x1895e6858 <redacted> + 340
28 UIKit 0x189dd3cb8 <redacted> + 2736
29 UIKit 0x189dcd720 <redacted> + 784
30 CoreFoundation 0x183752278 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 24
31 CoreFoundation 0x183751bc0 __CFRunLoopDoSources0 + 524
32 CoreFoundation 0x18374f7c0 __CFRunLoopRun + 804
33 CoreFoundation 0x18367e048 CFRunLoopRunSpecific + 444
34 GraphicsServices 0x185101198 GSEventRunModal + 180
35 UIKit 0x189651628 <redacted> + 684
36 UIKit 0x18964c360 UIApplicationMain + 208
37 Next Turn 0x1000b3f40 main (main.m:16)
38 libdispatch.dylib 0x1826605b8 (Missing)
#1. com.apple.uikit.eventfetch-thread
0 libsystem_kernel.dylib 0x18275416c mach_msg_trap + 8
1 libsystem_kernel.dylib 0x182753fdc mach_msg + 72
2 CoreFoundation 0x183751cec __CFRunLoopServiceMachPort + 192
3 CoreFoundation 0x18374f908 __CFRunLoopRun + 1132
4 CoreFoundation 0x18367e048 CFRunLoopRunSpecific + 444
5 Foundation 0x18418cb1c -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 304
6 Foundation 0x1841ad60c -[NSRunLoop(NSRunLoop) runUntilDate:] + 96
7 UIKit 0x189fc6c7c <redacted> + 136
8 Foundation 0x18428a50c __NSThread__start__ + 1024
9 libsystem_pthread.dylib 0x182837860 _pthread_body + 240
10 libsystem_pthread.dylib 0x182837770 _pthread_body + 282
11 libsystem_pthread.dylib 0x182834dbc thread_start + 4
#2. com.twitter.crashlytics.ios.MachExceptionServer
0 Next Turn 0x10016b6d0 CLSProcessRecordAllThreads (CLSProcess.c:376)
1 Next Turn 0x10016b6d0 CLSProcessRecordAllThreads (CLSProcess.c:376)
2 Next Turn 0x10016baf0 CLSProcessRecordAllThreads (CLSProcess.c:403)
3 Next Turn 0x10015c7d0 CLSHandler (CLSHandler.m:24)
4 Next Turn 0x100157968 CLSMachExceptionServer (CLSMachException.c:443)
5 libsystem_pthread.dylib 0x182837860 _pthread_body + 240
6 libsystem_pthread.dylib 0x182837770 _pthread_body + 282
7 libsystem_pthread.dylib 0x182834dbc thread_start + 4
#3. com.apple.NSURLConnectionLoader
0 libsystem_kernel.dylib 0x18275416c mach_msg_trap + 8
1 libsystem_kernel.dylib 0x182753fdc mach_msg + 72
2 CoreFoundation 0x183751cec __CFRunLoopServiceMachPort + 192
3 CoreFoundation 0x18374f908 __CFRunLoopRun + 1132
4 CoreFoundation 0x18367e048 CFRunLoopRunSpecific + 444
5 CFNetwork 0x183e6bcec +[NSURLConnection(Loader) _resourceLoadLoop:] + 336
6 Foundation 0x18428a50c __NSThread__start__ + 1024
7 libsystem_pthread.dylib 0x182837860 _pthread_body + 240
8 libsystem_pthread.dylib 0x182837770 _pthread_body + 282
9 libsystem_pthread.dylib 0x182834dbc thread_start + 4
#4. Thread
0 libsystem_kernel.dylib 0x182772a88 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x18283536c _pthread_wqthread + 1452
2 libsystem_pthread.dylib 0x182834db4 start_wqthread + 4
#5. Thread
0 libsystem_kernel.dylib 0x182772a88 __workq_kernreturn + 8
1 libsystem_pthread.dylib 0x182835188 _pthread_wqthread + 968
2 libsystem_pthread.dylib 0x182834db4 start_wqthread + 4
My app works well the 99% of times but 1% it's crashing after opening the camera, we are getting a random crash. This is the stacktrace from Crashlytics:
Crashed: com.apple.camera.avcapturesession
0 libobjc.A.dylib 0x194d8fbd0 objc_msgSend + 16
1 UIKit 0x1890df21c -[UIViewAnimationState animationForLayer:forKey:forView:] + 712
2 UIKit 0x188e55724 -[UIViewAnimationState actionForLayer:forKey:forView:] + 44
3 UIKit 0x188e19f44 -[UIView(CALayerDelegate) actionForLayer:forKey:] + 140
4 QuartzCore 0x188774e88 -[CALayer actionForKey:] + 104
5 QuartzCore 0x18876a86c actionForKey(CALayer*, CA::Transaction*, NSString*) + 100
6 QuartzCore 0x18876a6d8 CA::Layer::begin_change(CA::Transaction*, unsigned int, objc_object*&) + 176
7 QuartzCore 0x18876d6a0 CA::Layer::setter(unsigned int, _CAValueType, void const*) + 156
8 QuartzCore 0x188774e14 -[CALayer setOpacity:] + 48
9 UIKit 0x188e19a5c -[UIView(Rendering) setAlpha:] + 104
10 corporate 0x1005a3e5c -[GSDK_GTMReadMonitorInputStream .cxx_destruct]
11 corporate 0x1005a4398 -[GSDK_GTMReadMonitorInputStream .cxx_destruct]
12 CoreFoundation 0x184614ae4 __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 20
13 CoreFoundation 0x184553220 _CFXNotificationPost + 2060
14 Foundation 0x185452cc0 -[NSNotificationCenter postNotificationName:object:userInfo:] + 72
15 AVFoundation 0x182efd9c4 -[AVCaptureSession _setRunning:] + 312
16 CameraKit 0x18aac1adc __38-[CAMCaptureController _startPreview:]_block_invoke829
17 libdispatch.dylib 0x1953c13ac _dispatch_call_block_and_release + 24
18 libdispatch.dylib 0x1953c136c _dispatch_client_callout + 16
19 libdispatch.dylib 0x1953cb4c0 _dispatch_queue_drain + 1216
20 libdispatch.dylib 0x1953c4474 _dispatch_queue_invoke + 132
21 libdispatch.dylib 0x1953cd224 _dispatch_root_queue_drain + 664
22 libdispatch.dylib 0x1953ce75c _dispatch_worker_thread3 + 108
23 libsystem_pthread.dylib 0x19559d2e4 _pthread_wqthread + 816
24 libsystem_pthread.dylib 0x19559cfa8 start_wqthread + 4
I don't fully understand where this crash is coming from but I found that I could be related to GoogleNetworkingUtilities.
try this
Are you certain that you aren't doing anything that would effect any UI elements in a background thread?
If you're on iOS 10 you need to add Privacy - Camera Usage Description to your Info.plist file
After I use flurry to collect the crash reports in my app, I found a lot of crash like this:
0 libobjc.A.dylib 0x3340d6ba _objc_retain + 9
1 libsystem_network.dylib 0x33a8a32b <redacted> + 1402
2 libsystem_dnssd.dylib 0x33a07a81 <redacted> + 308
3 libsystem_dnssd.dylib 0x33a065bb _DNSServiceProcessResult + 550
4 libdispatch.dylib 0x33964253 <redacted> + 626
5 libdispatch.dylib 0x339553f9 <redacted> + 212
6 libdispatch.dylib 0x3395b48f <redacted> + 502
7 libdispatch.dylib 0x3395609d <redacted> + 84
8 libdispatch.dylib 0x3395cba1 <redacted> + 320
9 libdispatch.dylib 0x3395dcd7 <redacted> + 94
10 libsystem_pthread.dylib 0x33ab4e31 __pthread_wqthread + 668
11 libsystem_pthread.dylib 0x33ab4b84 _start_wqthread + 8
and another crash:
0 CoreFoundation 0x2dde782e _CFArrayGetCount + 5
1 WebCore 0x3610dddd -[WAKView subviews] + 36
2 WebCore 0x3610dd99 -[WAKView viewWillDraw] + 20
3 WebCore 0x3610dc85 <redacted> + 64
4 QuartzCore 0x30348e3b <redacted> + 350
5 QuartzCore 0x30348ccd <redacted> + 16
6 QuartzCore 0x303486df <redacted> + 230
7 QuartzCore 0x303484ef <redacted> + 314
8 UIKit 0x306c842b <redacted> + 126
9 CoreFoundation 0x2de7f2a5 <redacted> + 20
10 CoreFoundation 0x2de7cc49 <redacted> + 284
11 CoreFoundation 0x2de7cf8b <redacted> + 730
12 CoreFoundation 0x2dde7f4f _CFRunLoopRunSpecific + 522
13 CoreFoundation 0x2dde7d33 _CFRunLoopRunInMode + 106
14 GraphicsServices 0x32d40663 _GSEventRunModal + 138
15 UIKit 0x3073316d _UIApplicationMain + 1136
What's the root cause for them? I had google a lot about them, but I can't found any useful about them.