This is a slightly common Mac crash that has occurred since 4.17.1. Users have not provided any descriptions of their actions when the crash occurred.
Callstack from Log
[2017.09.28-15.29.17:473][346]LogModuleManager: Shutting down and abandoning module SandboxFile (4) [2017.09.28-15.29.17:473][346]LogModuleManager: Shutting down and abandoning module PakFile (2) [2017.09.28-15.29.17:509][346]LogMac: === Critical error: === SIGSEGV: invalid attempt to access memory at address 0x18 [2017.09.28-15.29.17:509][346]LogMac: TRawMessageHandler<FTargetDeviceServicePong, FTargetDeviceProxyManager>::HandleMessage(TSharedRef<IMessageContext, (ESPMode)1> const&) Address = 0x1a835e13 (filename not found) [in UE4Editor-TargetDeviceServices.dylib] FMessageEndpoint::ProcessMessage(TSharedRef<IMessageContext, (ESPMode)1> const&) Address = 0x1a82fcce (filename not found) [in UE4Editor-TargetDeviceServices.dylib] FMessageDispatchTask::DoTask(ENamedThreads::Type, TRefCountPtr<FGraphEvent> const&) Address = 0x1383c0c4 (filename not found) [in UE4Editor-Messaging.dylib] TGraphTask<FMessageDispatchTask>::ExecuteTask(TArray<FBaseGraphTask*, FDefaultAllocator>&, ENamedThreads::Type) Address = 0x13852465 (filename not found) [in UE4Editor-Messaging.dylib] FNamedTaskThread::ProcessTasksNamedThread(int, bool) Address = 0x419d78f (filename not found) [in UE4Editor-Core.dylib] FNamedTaskThread::ProcessTasksUntilQuit(int) Address = 0x419c798 (filename not found) [in UE4Editor-Core.dylib] FTaskGraphImplementation::ProcessThreadUntilRequestReturn(ENamedThreads::Type) Address = 0x4198521 (filename not found) [in UE4Editor-Core.dylib] FTaskGraphImplementation::WaitUntilTasksComplete(TArray<TRefCountPtr<FGraphEvent>, TInlineAllocator<4u, FDefaultAllocator> > const&, ENamedThreads::Type) Address = 0x4198da6 (filename not found) [in UE4Editor-Core.dylib] FTaskGraphInterface::WaitUntilTaskCompletes(TRefCountPtr<FGraphEvent> const&, ENamedThreads::Type) Address = 0x41a3ca3 (filename not found) [in UE4Editor-Core.dylib] DirectStatsCommand(wchar_t const*, bool, FOutputDevice*) Address = 0x450e622 (filename not found) [in UE4Editor-Core.dylib] FThreadStats::StopThread() Address = 0x4518755 (filename not found) [in UE4Editor-Core.dylib] FEngineLoop::Exit() Address = 0x407b7f0 (filename not found) [in UE4Editor] GuardedMain(wchar_t const*) Address = 0x407bc40 (filename not found) [in UE4Editor] -[UE4AppDelegate runGameThread:] Address = 0x40895d0 (filename not found) [in UE4Editor] -[FCocoaGameThread main] Address = 0x434d446 (filename not found) [in UE4Editor-Core.dylib] __NSThread__start__() Address = 0x964fc8ad (filename not found) [in Foundation] _pthread_body() Address = 0xaa47a93b (filename not found) [in libsystem_pthread.dylib] _pthread_body() Address = 0xaa47a887 (filename not found) [in libsystem_pthread.dylib] thread_start() Address = 0xaa47a08d (filename not found) [in libsystem_pthread.dylib]
repro steps currently unknown
SEGV_MAPERR at 0x18 UE4Editor-TargetDeviceServices.dylib!TRawMessageHandler<FTargetDeviceServicePong, FTargetDeviceProxyManager>::HandleMessage(TSharedRef<IMessageContext,() UE4Editor-TargetDeviceServices.dylib!FMessageEndpoint::ProcessMessage(TSharedRef<IMessageContext,() UE4Editor-Messaging.dylib!FMessageDispatchTask::DoTask() UE4Editor-Messaging.dylib!TGraphTask<FMessageDispatchTask>::ExecuteTask() UE4Editor-Core.dylib!FNamedTaskThread::ProcessTasksNamedThread() UE4Editor-Core.dylib!FNamedTaskThread::ProcessTasksUntilQuit() UE4Editor-Core.dylib!FTaskGraphImplementation::ProcessThreadUntilRequestReturn() UE4Editor-Core.dylib!FTaskGraphImplementation::WaitUntilTasksComplete() UE4Editor-Core.dylib!FTaskGraphInterface::WaitUntilTaskCompletes() UE4Editor-Core.dylib!DirectStatsCommand() UE4Editor-Core.dylib!FThreadStats::StopThread() UE4Editor!FEngineLoop::Exit() UE4Editor!GuardedMain() UE4Editor!<Unknown> UE4Editor-Core.dylib!<Unknown> Foundation!Unknown() libsystem_pthread.dylib!<Unknown> libsystem_pthread.dylib!<Unknown> libsystem_pthread.dylib!<Unknown>
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There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-50846 in the post.
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Component | UE - Platform - Apple |
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Affects Versions | 4.17.1, 4.17.2 |
Created | Oct 5, 2017 |
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Resolved | Feb 18, 2019 |
Updated | Mar 27, 2020 |