We are facing a list of issues in crashlytics with a crash description "??? objc_msgSend", "???-[FBSSerialQueue assertBarrierOnQueue]", "???__exceptionPreprocess" we can't find any clue related to our source code from the logs. below are few logs for reference.
Crash Stack 1(???_objc_msgSend)
Crashed: WebThread
0 libobjc.A.dylib 0x21e0 objc_msgSend + 32
1 UIKitCore 0x110ae48 -[UIView _wantsReapplicationOfAutoLayoutWithLayoutDirtyOnEntry:] + 104
2 UIKitCore 0x110ba68 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 2668
3 QuartzCore 0x167670 -[CALayer layoutSublayers] + 308
4 QuartzCore 0x167b54 CA::Layer::layout_if_needed(CA::Transaction*) + 548
5 QuartzCore 0x17c78c CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 144
6 QuartzCore 0xbe5e4 CA::Context::commit_transaction(CA::Transaction*, double, double*) + 500
7 QuartzCore 0xea7f4 CA::Transaction::commit() + 684
8 QuartzCore 0xebb20 CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) + 96
9 CoreFoundation 0xa25e0 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 36
10 CoreFoundation 0x9c704 __CFRunLoopDoObservers + 572
11 CoreFoundation 0x9c3b4 CFRunLoopRunSpecific + 684
12 WebCore 0xb5ca24 <redacted> + 688
13 libsystem_pthread.dylib 0x1bfc _pthread_start + 320
14 libsystem_pthread.dylib 0xa758 thread_start + 8
Crash Stack 2(???_FBSSerialQueue assertBarrierOnQueue)
Crashed: WebThread
0 FrontBoardServices 0x8cdc -[FBSSerialQueue assertBarrierOnQueue] + 448
1 FrontBoardServices 0x12168 -[FBSScene updateClientSettings:withTransitionContext:] + 72
2 FrontBoardServices 0x1c344 -[FBSScene updateClientSettingsWithTransitionBlock:] + 160
3 FrontBoardServices 0xad48 -[FBSScene updateClientSettingsWithBlock:] + 140
4 UIKitCore 0x1f9250 -[FBSScene(UIApp) updateUIClientSettingsWithBlock:] + 184
5 UIKitCore 0x602fc4 -[UIApplication _setAmbiguousControlCenterActivationMargin:] + 140
6 UIKitCore 0xd6678 -[UIPeripheralHost(UIKitInternal) setAmbiguousControlCenterActivationMargin:] + 52
7 UIKitCore 0x292908 __66-[UIInputWindowController postValidatedEndNotifications:withInfo:]_block_invoke + 1132
8 UIKitCore 0x523a2c -[UIInputWindowController postValidatedEndNotifications:withInfo:] + 204
9 UIKitCore 0xd375bc __48-[UIInputWindowController viewDidLayoutSubviews]_block_invoke.865 + 852
10 UIKitCore 0x461180 -[UIInputWindowController performWithSafeTransitionFrames:] + 268
11 UIKitCore 0x382358 -[UIInputWindowController viewDidLayoutSubviews] + 360
12 UIKitCore 0x18dea0 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 3092
13 QuartzCore 0x3f280 CA::Layer::layout_if_needed(CA::Transaction*) + 536
14 QuartzCore 0x31aa8 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 144
15 QuartzCore 0x460b0 CA::Context::commit_transaction(CA::Transaction*, double, double*) + 500
16 QuartzCore 0x4f174 CA::Transaction::commit() + 680
17 QuartzCore 0x3121c CA::Transaction::flush_as_runloop_observer(bool) + 100
18 CoreFoundation 0x41570 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 36
19 CoreFoundation 0x10854 __CFRunLoopDoObservers + 572
20 CoreFoundation 0x1f41c CFRunLoopRunSpecific + 684
21 WebCore 0xbf8810 <redacted> + 756
22 libsystem_pthread.dylib 0x1a60 _pthread_start + 148
23 libsystem_pthread.dylib 0xf5c thread_start + 8
Crash Stack 3(???__exceptionPreprocess)
Fatal Exception: NSInternalInconsistencyException
0 CoreFoundation 0x9905c __exceptionPreprocess
1 libobjc.A.dylib 0x15f54 objc_exception_throw
2 Foundation 0x13099c _userInfoForFileAndLine
3 UIFoundation 0xa933c -[NSTextLineFragment _drawTexCorrectionMarker:characterRange:atOrigin:graphicsContext:]
4 UIFoundation 0x8b08 -[NSTextLineFragment drawTextCorrectionMarkersAtPoint:graphicsContext:]
5 UIFoundation 0x65c44 -[NSTextLineFragment drawAtPoint:graphicsContext:]
6 UIFoundation 0x69ef4 -[NSTextLineFragment drawAtPoint:inContext:]
7 UIFoundation 0x3eb80 -[NSTextLayoutFragment drawAtPoint:inContext:]
8 UIKitCore 0x649ce4 _UITextCanvasDrawWithFadedEdgesInContext
9 UIKitCore 0x77cb4c -[_UITextLayoutFragmentView drawRect:]
10 UIKitCore 0x18898c -[UIView(CALayerDelegate) drawLayer:inContext:]
11 QuartzCore 0x4d2c8 CABackingStoreUpdate_
12 QuartzCore 0x8fe60 invocation function for block in CA::Layer::display_()
13 QuartzCore 0x91ae0 -[CALayer _display]
14 QuartzCore 0x31bc4 CA::Layer::layout_and_display_if_needed(CA::Transaction*)
15 QuartzCore 0x460b0 CA::Context::commit_transaction(CA::Transaction*, double, double*)
16 QuartzCore 0x4f174 CA::Transaction::commit()
17 QuartzCore 0x3121c CA::Transaction::flush_as_runloop_observer(bool)
18 CoreFoundation 0x41570 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__
19 CoreFoundation 0x10854 __CFRunLoopDoObservers
20 CoreFoundation 0xb8ec __CFRunLoopRun
21 CoreFoundation 0x1f3c8 CFRunLoopRunSpecific
22 GraphicsServices 0x138c GSEventRunModal
23 UIKitCore 0x51b0bc -[UIApplication _run]
24 UIKitCore 0x298be8 UIApplicationMain
25 CitibankAUx 0x41673c (Missing)
26 Citibank AU 0x25b48 main + 43 (main.m:43)
27 ??? 0x107dbda24 (Missing)
Can anyone helps us to know what can be the cause of such crashes and what does this three question mark "???" before a crash description means?
Thanks in advance.
Amit
what does this three question mark "???" before a crash description means?
I think you’re likely to find an answer if you escalate this via the support channel for your third-party crash reporter.
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