hello
We found that our app had a lot of crashes on iOS 26. The crash stack showed [CBXpcConnection _sendBarrier]. The following is the crash log:
Thread 0 name: com.apple.main-thread (cpu_usage: 0.00%)
1
libsystem_kernel.dylib
_semaphore_wait_trap (in libsystem_kernel.dylib)
2
libdispatch.dylib
__dispatch_sema4_wait (in libdispatch.dylib)
3
libdispatch.dylib
__dispatch_semaphore_wait_slow (in libdispatch.dylib)
4
CoreBluetooth
-[CBXpcConnection _sendBarrier] (in CoreBluetooth)
5
CoreFoundation
___CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ (in CoreFoundation)
6
CoreFoundation
____CFXRegistrationPost_block_invoke (in CoreFoundation)
7
CoreFoundation
__CFXRegistrationPost (in CoreFoundation)
8
CoreFoundation
__CFXNotificationPost (in CoreFoundation)
9
Foundation
-[NSNotificationCenter postNotificationName:object:userInfo:] (in Foundation)
10
UIKitCore
___47-[UIApplication _applicationDidEnterBackground]_block_invoke (in UIKitCore)
11
UIKitCore
+[UIViewController _performWithoutDeferringTransitionsAllowingAnimation:actions:] (in UIKitCore)
12
UIKitCore
-[UIApplication _applicationDidEnterBackground] (in UIKitCore)
13
UIKitCore
___101-[_UISceneLifecycleMultiplexer _evalTransitionToSettings:fromSettings:forceExit:withTransitionStore:]_block_invoke_2 (in UIKitCore)
14
UIKitCore
__UIScenePerformActionsWithLifecycleActionMask (in UIKitCore)
15
UIKitCore
___101-[_UISceneLifecycleMultiplexer _evalTransitionToSettings:fromSettings:forceExit:withTransitionStore:]_block_invoke (in UIKitCore)
16
UIKitCore
-[_UISceneLifecycleMultiplexer _performBlock:withApplicationOfDeactivationReasons:fromReasons:] (in UIKitCore)
17
UIKitCore
-[_UISceneLifecycleMultiplexer _evalTransitionToSettings:fromSettings:forceExit:withTransitionStore:] (in UIKitCore)
18
UIKitCore
-[_UISceneLifecycleMultiplexer uiScene:transitionedFromState:withTransitionContext:] (in UIKitCore)
19
UIKitCore
___186-[_UIWindowSceneFBSSceneTransitionContextDrivenLifecycleSettingsDiffAction _performActionsForUIScene:withUpdatedFBSScene:settingsDiff:fromSettings:transitionContext:lifecycleActionType:]_block_invoke (in UIKitCore)
20
UIKitCore
+[BSAnimationSettings(UIKit) tryAnimatingWithSettings:fromCurrentState:actions:completion:] (in UIKitCore)
21
UIKitCore
__UISceneSettingsDiffActionPerformChangesWithTransitionContextAndCompletion (in UIKitCore)
22
UIKitCore
-[_UIWindowSceneFBSSceneTransitionContextDrivenLifecycleSettingsDiffAction _performActionsForUIScene:withUpdatedFBSScene:settingsDiff:fromSettings:transitionContext:lifecycleActionType:] (in UIKitCore)
23
UIKitCore
__64-[UIScene scene:didUpdateWithDiff:transitionContext:completion:]_block_invoke.218 (in UIKitCore)
24
UIKitCore
-[UIScene _emitSceneSettingsUpdateResponseForCompletion:afterSceneUpdateWork:] (in UIKitCore)
25
UIKitCore
-[UIScene scene:didUpdateWithDiff:transitionContext:completion:] (in UIKitCore)
26
UIKitCore
-[UIApplicationSceneClientAgent scene:handleEvent:withCompletion:] (in UIKitCore)
27
FrontBoardServices
__76-[FBSScene updater:didUpdateSettings:withDiff:transitionContext:completion:]_block_invoke.129 (in FrontBoardServices)
28
FrontBoardServices
-[FBSScene _callOutQueue_maybeCoalesceClientSettingsUpdates:] (in FrontBoardServices)
29
FrontBoardServices
-[FBSScene updater:didUpdateSettings:withDiff:transitionContext:completion:] (in FrontBoardServices)
30
FrontBoardServices
__94-[FBSWorkspaceScenesClient _queue_updateScene:withSettings:diff:transitionContext:completion:]_block_invoke_2.cold.1 (in FrontBoardServices)
31
FrontBoardServices
___94-[FBSWorkspaceScenesClient _queue_updateScene:withSettings:diff:transitionContext:completion:]_block_invoke_2 (in FrontBoardServices)
32
FrontBoardServices
-[FBSWorkspace _calloutQueue_executeCalloutFromSource:withBlock:] (in FrontBoardServices)
33
libdispatch.dylib
__dispatch_client_callout (in libdispatch.dylib)
34
libdispatch.dylib
__dispatch_block_invoke_direct (in libdispatch.dylib)
35
BoardServices
___BSSERVICEMAINRUNLOOPQUEUE_IS_CALLING_OUT_TO_A_BLOCK__ (in BoardServices)
36
BoardServices
_BSServiceMainRunLoopSourceHandler (in BoardServices)
37
CoreFoundation
___CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ (in CoreFoundation)
38
CoreFoundation
___CFRunLoopDoSource0 (in CoreFoundation)
39
CoreFoundation
___CFRunLoopDoSources0 (in CoreFoundation)
40
CoreFoundation
___CFRunLoopRun (in CoreFoundation)
41
CoreFoundation
__CFRunLoopRunSpecificWithOptions (in CoreFoundation)
42
GraphicsServices
_GSEventRunModal (in GraphicsServices)
43
UIKitCore
-[UIApplication _run] (in UIKitCore)
44
UIKitCore
_UIApplicationMain (in UIKitCore)
Thanks
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