ios - 带有 Unity 2019.4.8f1 的 iOS Unity APP 在 iOS 14.4 上崩溃，看门狗异常 0x8badf00d

Question

我们正在开发一个AR应用，当应用体验AR后进入后台时，有时会崩溃。

我们将 iPhone X 与 iOS 13.7、14.4、14.6 进行对比，发现只有 iOS 14.4 才会崩溃，这是苹果的 bug 还是 unity 的？

这是崩溃：

Exception Type:  EXC_CRASH (SIGKILL)

Exception Codes: 0x0000000000000000, 0x0000000000000000

Exception Note:  EXC_CORPSE_NOTIFY

Termination Reason: Namespace SPRINGBOARD, Code 0x8badf00d

Termination Description: SPRINGBOARD, <RBSTerminateContext| domain:10 code:0x8BADF00D explanation:scene-update watchdog transgression: application<com.ezxr.thesongmemories>:2413 exhausted real (wall clock) time allowance of 10.00 seconds | ProcessVisibility: Background | ProcessState: Running | WatchdogEvent: scene-update | WatchdogVisibility: Background | WatchdogCPUStatistics: ( | "Elapsed total CPU time (seconds): 8.710 (user 8.710, system 0.000), 15% CPU", | "Elapsed application CPU time (seconds): 0.422, 1% CPU" | ) reportType:CrashLog maxTerminationResistance:Interactive>

Triggered by Thread:  0

以及在 iOS 14.4 中找到的日志

Thread 0 name:  Dispatch queue: com.apple.main-thread

Thread 0 Crashed:

0   libsystem_kernel.dylib            0x00000001b79621ac __psynch_cvwait + 8

1   libsystem_pthread.dylib           0x00000001d54bf468 _pthread_cond_wait + 1192

2   Foundation                        0x000000018acb33e4 -[NSOperation waitUntilFinished] + 584

3   CoreFoundation                    0x00000001899698c0 _CFXNotificationPost + 796

4   Foundation                        0x000000018ac304bc -[NSNotificationCenter postNotificationName:object:userInfo:] + 64

5   UIKitCore                         0x000000018c3cee04 __47-[UIApplication _applicationDidEnterBackground]_block_invoke + 316

6   UIKitCore                         0x000000018bcacc6c +[UIViewController _performWithoutDeferringTransitionsAllowingAnimation:actions:] + 164

7   UIKitCore                         0x000000018c3ceb9c -[UIApplication _applicationDidEnterBackground] + 144

8   UIKitCore                         0x000000018ba1dc2c __101-[_UISceneLifecycleMultiplexer _evalTransitionToSettings:fromSettings:forceExit:withTransitionStore:]_block_invoke_2 + 904

9   UIKitCore                         0x000000018bf8af9c _UIScenePerformActionsWithLifecycleActionMask + 112

10  UIKitCore                         0x000000018ba1d80c __101-[_UISceneLifecycleMultiplexer _evalTransitionToSettings:fromSettings:forceExit:withTransitionStore:]_block_invoke + 224

11  UIKitCore                         0x000000018ba1d2cc -[_UISceneLifecycleMultiplexer _performBlock:withApplicationOfDeactivationReasons:fromReasons:] + 484

12  UIKitCore                         0x000000018ba1d61c -[_UISceneLifecycleMultiplexer _evalTransitionToSettings:fromSettings:forceExit:withTransitionStore:] + 768

13  UIKitCore                         0x000000018ba1ce58 -[_UISceneLifecycleMultiplexer uiScene:transitionedFromState:withTransitionContext:] + 340

14  UIKitCore                         0x000000018ba253a4 __186-[_UIWindowSceneFBSSceneTransitionContextDrivenLifecycleSettingsDiffAction _performActionsForUIScene:withUpdatedFBSScene:settingsDiff:fromSettings:transitionContext:lifecycleActionType:]_block_invoke + 196

15  UIKitCore                         0x000000018be9760c +[BSAnimationSettings+ 6936076 (UIKit) tryAnimatingWithSettings:actions:completion:] + 892

16  UIKitCore                         0x000000018bfa36c4 _UISceneSettingsDiffActionPerformChangesWithTransitionContext + 272

17  UIKitCore                         0x000000018ba2509c -[_UIWindowSceneFBSSceneTransitionContextDrivenLifecycleSettingsDiffAction _performActionsForUIScene:withUpdatedFBSScene:settingsDiff:fromSettings:transitionContext:lifecycleActionType:] + 384

18  UIKitCore                         0x000000018b84c5a0 __64-[UIScene scene:didUpdateWithDiff:transitionContext:completion:]_block_invoke + 776

19  UIKitCore                         0x000000018b84af14 -[UIScene _emitSceneSettingsUpdateResponseForCompletion:afterSceneUpdateWork:] + 256

20  UIKitCore                         0x000000018b84c1c8 -[UIScene scene:didUpdateWithDiff:transitionContext:completion:] + 248

21  UIKitCore                         0x000000018bec12e8 -[UIApplicationSceneClientAgent scene:handleEvent:withCompletion:] + 492

22  FrontBoardServices                0x0000000199778c94 -[FBSScene updater:didUpdateSettings:withDiff:transitionContext:completion:] + 484

23  FrontBoardServices                0x00000001997a5504 __94-[FBSWorkspaceScenesClient _queue_updateScene:withSettings:diff:transitionContext:completion:]_block_invoke_2 + 152

24  FrontBoardServices                0x00000001997874a0 -[FBSWorkspace _calloutQueue_executeCalloutFromSource:withBlock:] + 240

25  FrontBoardServices                0x00000001997a5430 __94-[FBSWorkspaceScenesClient _queue_updateScene:withSettings:diff:transitionContext:completion:]_block_invoke + 396

26  libdispatch.dylib                 0x0000000189601db0 _dispatch_client_callout + 20

27  libdispatch.dylib                 0x0000000189605738 _dispatch_block_invoke_direct + 268

28  FrontBoardServices                0x00000001997cc250 __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__ + 48

29  FrontBoardServices                0x00000001997cbee0 -[FBSSerialQueue _targetQueue_performNextIfPossible] + 448

30  FrontBoardServices                0x00000001997cc434 -[FBSSerialQueue _performNextFromRunLoopSource] + 32

31  CoreFoundation                    0x000000018998976c __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28

32  CoreFoundation                    0x0000000189989668 __CFRunLoopDoSource0 + 208

33  CoreFoundation                    0x0000000189988960 __CFRunLoopDoSources0 + 268

34  CoreFoundation                    0x0000000189982a8c __CFRunLoopRun + 824

35  CoreFoundation                    0x000000018998221c CFRunLoopRunSpecific + 600

36  GraphicsServices                  0x00000001a154e784 GSEventRunModal + 164

37  UIKitCore                         0x000000018c3c2ee8 -[UIApplication _run] + 1072

38  UIKitCore                         0x000000018c3c875c UIApplicationMain + 168

39  libswiftUIKit.dylib               0x000000019dce92e4 UIApplicationMain+ 94948 (_:_:_:_:) + 104

40  SongMemory                        0x0000000104811fa4 0x1047bc000 + 352164

41  SongMemory                        0x0000000104811f1c 0x1047bc000 + 352028

42  SongMemory                        0x00000001048120b8 0x1047bc000 + 352440

43  libdyld.dylib                     0x00000001896426b0 start + 4

当我们用 xcode 运行它时，应用程序只是失去响应，附件显示线程正在做什么。

在 xcode 中找到的崩溃日志

应用程序失去响应时的所有线程

线程名称

一些用户停留在 iOS 14.4 中，那么这是避免这种崩溃的某种方式吗？

标签： iosunity3d