Crash on project startup, please help if you can

Airmercs · November 20, 2019, 8:21am

Here is the log to the crash:

LoginId:da82e39042416e036a39d7b909740a8b
EpicAccountId:b88989bbe8264eed9759c9a7a1f5c1e6

Assertion failed: [File:/Users/build/Build/++UE4/Sync/Engine/Source/Runtime/Apple/MetalRHI/Private/MetalCommandList.cpp] [Line: 192] Command Buffer Scene Failed with Internal Error! Error Domain: MTLCommandBufferErrorDomain Code: 1 Description Internal Error (IOAF code -536870211) Unknown Unknown

FGenericPlatformMisc::RaiseException(unsigned int) Address = 0x108767d1b (filename not found) [in UE4Editor-Core.dylib]
FMacErrorOutputDevice::Serialize(wchar_t const*, ELogVerbosity::Type, FName const&) Address = 0x1088c19a0 (filename not found) [in UE4Editor-Core.dylib]
FOutputDevice::LogfImpl(wchar_t const*, …) Address = 0x1089ab829 (filename not found) [in UE4Editor-Core.dylib]
AssertFailedImplV(char const*, char const*, int, wchar_t const*, __va_list_tag*) Address = 0x10893b0fd (filename not found) [in UE4Editor-Core.dylib]
FDebug::AssertFailed(char const*, char const*, int, wchar_t const*, …) Address = 0x10893b24b (filename not found) [in UE4Editor-Core.dylib]
ReportMetalCommandBufferFailure(mtlpp::CommandBuffer const&, wchar_t const*, bool) Address = 0x133e0cef7 (filename not found) [in UE4Editor-MetalRHI.dylib]
MetalCommandBufferFailureInternal(mtlpp::CommandBuffer const&) Address = 0x133e4c88c (filename not found) [in UE4Editor-MetalRHI.dylib]
HandleMetalCommandBufferError(mtlpp::CommandBuffer const&) Address = 0x133e0b19b (filename not found) [in UE4Editor-MetalRHI.dylib]
HandleIntelMetalCommandBufferError(mtlpp::CommandBuffer const&) Address = 0x133e0b125 (filename not found) [in UE4Editor-MetalRHI.dylib]
FMetalCommandList::HandleMetalCommandBufferFailure(mtlpp::CommandBuffer const&) Address = 0x133e0af65 (filename not found) [in UE4Editor-MetalRHI.dylib]
invocation function for block in FMetalCommandList::Commit(mtlpp::CommandBuffer&, TArray<ns::Object<void (mtlpp::CommandBuffer const&) block_pointer, (ns::CallingConvention)1>, TSizedDefaultAllocator<32> >, bool, bool) Address = 0x133e0d8cf (filename not found) [in UE4Editor-MetalRHI.dylib]
invocation function for block in mtlpp::CommandBuffer::AddCompletedHandler(void (mtlpp::CommandBuffer const&) block_pointer) Address = 0x133dbe984 (filename not found) [in UE4Editor-MetalRHI.dylib]
_doMTLDispatch Address = 0x7fff38fc9711 (filename not found) [in Metal]
-[_MTLCommandBuffer didCompleteWithStartTime:endTime:error:] Address = 0x7fff38fc9c04 (filename not found) [in Metal]
-[MTLIOAccelCommandBuffer didCompleteWithStartTime:endTime:error:] Address = 0x7fff38fc99fe (filename not found) [in Metal]
-[_MTLCommandQueue commandBufferDidComplete:startTime:completionTime:error:] Address = 0x7fff38fc98ed (filename not found) [in Metal]
__53-[MTLIOAccelCommandQueue submitCommandBuffers:count:]_block_invoke.25 Address = 0x7fff38fc97dc (filename not found) [in Metal]
ioAccelCommandQueueBlockFenceCallback Address = 0x7fff517bf6d2 (filename not found) [in IOAccelerator]
IODispatchCalloutFromCFMessage Address = 0x7fff36d537ab (filename not found) [in IOKit]
_IODispatchCalloutWithDispatch Address = 0x7fff36d5362d (filename not found) [in IOKit]
dispatch_mig_server Address = 0x7fff6038fbde (filename not found) [in libdispatch.dylib]
_dispatch_client_callout Address = 0x7fff6037963d (filename not found) [in libdispatch.dylib]
_dispatch_continuation_pop Address = 0x7fff6037bde6 (filename not found) [in libdispatch.dylib]
_dispatch_source_invoke Address = 0x7fff6038af42 (filename not found) [in libdispatch.dylib]
_dispatch_lane_serial_drain Address = 0x7fff6037f792 (filename not found) [in libdispatch.dylib]
_dispatch_lane_invoke Address = 0x7fff60380396 (filename not found) [in libdispatch.dylib]
_dispatch_workloop_worker_thread Address = 0x7fff603886ed (filename not found) [in libdispatch.dylib]
_pthread_wqthread Address = 0x7fff605b9611 (filename not found) [in libsystem_pthread.dylib]
start_wqthread Address = 0x7fff605b93fd (filename not found) [in libsystem_pthread.dylib]
Unknown() Address = 0x2000600050009 (filename not found) [in ???]

Airmercs · November 20, 2019, 9:07am

This has been fixed after I restarted my mac, very weird.

Thoeme · February 11, 2020, 7:07pm

Very strange indeed…same issue, same simple solution. Thanks mate!

Prashast · May 2, 2020, 9:00pm

Getting the same error on trying to execute a Development Build, not the Editor. Restarting didn’t work for me in my case.

mclark4386 · April 6, 2022, 6:46pm

Have the same issue, but only in certain levels in our game, and happens every time regardless of restart.
Here is the most recent crash (happy to give the full crash logs/dump if interested/requested)(also for the record I do have debug symbols installed but this is all I get):

Fatal error: [File:/Users/build/Build/++UE4/Sync/Engine/Source/Runtime/Apple/MetalRHI/Private/MetalCommandList.cpp] [Line: 176] Command Buffer AmbientOcclusionPS 517x329 SetupAsInput=1 Upsample=0 ShaderQuality=2 Failed with Internal Error! Error Domain: MTLCommandBufferErrorDomain Code: 1 Description Discarded (victim of GPU error/recovery) (00000005:kIOGPUCommandBufferCallbackErrorInnocentVictim) Unknown Unknown

FGenericPlatformMisc::RaiseException(unsigned int) Address = 0x10a809757 (filename not found) [in UE4Editor-Core.dylib]
FMacErrorOutputDevice::Serialize(char16_t const*, ELogVerbosity::Type, FName const&) Address = 0x10a99d673 (filename not found) [in UE4Editor-Core.dylib]
FOutputDevice::LogfImpl(char16_t const*, ...) Address = 0x10aaab799 (filename not found) [in UE4Editor-Core.dylib]
auto ReportMetalCommandBufferFailure(mtlpp::CommandBuffer const&, char16_t const*, bool)::$_19::operator()<FLogCategoryLogMetal, char16_t [87], char16_t const*, char16_t const*, char16_t const*, int, char16_t const*, char16_t const*, char16_t const*>(FLogCategoryLogMetal const&, char16_t const (&) [87], char16_t const* const&, char16_t const* const&, char16_t const* const&, int const&, char16_t const* const&, char16_t const* const&, char16_t const* const&) const Address = 0x1701a799c (filename not found) [in UE4Editor-MetalRHI.dylib]
ReportMetalCommandBufferFailure(mtlpp::CommandBuffer const&, char16_t const*, bool) Address = 0x170173df6 (filename not found) [in UE4Editor-MetalRHI.dylib]
MetalCommandBufferFailureInternal(mtlpp::CommandBuffer const&) Address = 0x1701a701c (filename not found) [in UE4Editor-MetalRHI.dylib]
HandleMetalCommandBufferError(mtlpp::CommandBuffer const&) Address = 0x1701726af (filename not found) [in UE4Editor-MetalRHI.dylib]
FMetalCommandList::HandleMetalCommandBufferFailure(mtlpp::CommandBuffer const&) Address = 0x170172473 (filename not found) [in UE4Editor-MetalRHI.dylib]
invocation function for block in FMetalCommandList::Commit(mtlpp::CommandBuffer&, TArray<ns::Object<void (mtlpp::CommandBuffer const&) block_pointer, (ns::CallingConvention)1>, TSizedDefaultAllocator<32> >, bool, bool) Address = 0x17017465e (filename not found) [in UE4Editor-MetalRHI.dylib]
invocation function for block in mtlpp::CommandBuffer::AddCompletedHandler(void (mtlpp::CommandBuffer const&) block_pointer) Address = 0x170130134 (filename not found) [in UE4Editor-MetalRHI.dylib]
Unknown() Address = 0x7ff80eb0f7a2 (filename not found) [in Metal]
Unknown() Address = 0x7ff80eb0fcd8 (filename not found) [in Metal]
Unknown() Address = 0x7ff90696fb44 (filename not found) [in IOGPU]
Unknown() Address = 0x7ff80eb0f951 (filename not found) [in Metal]
Unknown() Address = 0x7ff906972e8c (filename not found) [in IOGPU]
Unknown() Address = 0x7ff906976e65 (filename not found) [in IOGPU]
Unknown() Address = 0x7ff805b4a3b1 (filename not found) [in libdispatch.dylib]
Unknown() Address = 0x7ff805b63041 (filename not found) [in libdispatch.dylib]
Unknown() Address = 0x7ff805b501cd (filename not found) [in libdispatch.dylib]
Unknown() Address = 0x7ff805b63b77 (filename not found) [in libdispatch.dylib]
Unknown() Address = 0x7ff805b501cd (filename not found) [in libdispatch.dylib]
Unknown() Address = 0x7ff805b50e30 (filename not found) [in libdispatch.dylib]
Unknown() Address = 0x7ff805b501cd (filename not found) [in libdispatch.dylib]
Unknown() Address = 0x7ff805b50dfd (filename not found) [in libdispatch.dylib]
Unknown() Address = 0x7ff805b5aeee (filename not found) [in libdispatch.dylib]
_pthread_wqthread Address = 0x7ff805cfdfd0 (filename not found) [in libsystem_pthread.dylib]
start_wqthread Address = 0x7ff805cfcf57 (filename not found) [in libsystem_pthread.dylib]