SIGTRAP nanov2_allocate_from_block$VARIANT$mp()

Originator:stevjerbs
Number:rdar://50866704 Date Originated:5/16/19
Status:Open Resolved:No
Product:iOS SDK Product Version:12.1
Classification:Crash Reproducible:No
 
Area:
App Switcher

Summary:
App crashes on launch

Steps to Reproduce:
Launch app

Expected Results:
App does not crash

Actual Results:
App crashes with the following stack
0   libsystem_malloc.dylib         	 0x00000001f7347774 nanov2_allocate_from_block$VARIANT$mp (libsystem_malloc.dylib)
1   libsystem_malloc.dylib         	 0x00000001f73469d0 nanov2_allocate$VARIANT$mp (libsystem_malloc.dylib)
2   libsystem_malloc.dylib         	 0x00000001f73468f4 nanov2_malloc$VARIANT$mp (libsystem_malloc.dylib)
3   libsystem_malloc.dylib         	 0x00000001f73559a0 malloc_zone_malloc (libsystem_malloc.dylib)
4   libsystem_malloc.dylib         	 0x00000001f73563b0 malloc (libsystem_malloc.dylib)
5   libsystem_c.dylib              	 0x00000001f7264ae4 strdup (libsystem_c.dylib)
...
20  libxpc.dylib                   	 0x00000001f73cfc94 _xpc_dictionary_look_up (libxpc.dylib)
21  BaseBoard                      	 0x00000001f9fa10fc BSCreateDeserializedBSXPCEncodableObjectFromXPCDictionaryWithKey (BaseBoard)
22  BaseBoard                      	 0x00000001f9fa1204 BSDeserializeBSXPCEncodableObjectFromXPCDictionaryWithKey (BaseBoard)
23  FrontBoardServices             	 0x00000001fa1d5780 -[FBSWorkspaceClient _queue_workspaceEventFromMessage:ofType:] (FrontBoardServices)
24  FrontBoardServices             	 0x00000001fa1d6340 -[FBSWorkspaceClient _queue_handleSceneUpdate:] (FrontBoardServices)
25  FrontBoardServices             	 0x00000001fa1d76f0 -[FBSWorkspaceClient queue_handleMessage:] (FrontBoardServices)
26  BaseBoard                      	 0x00000001f9fbf8c4 __54-[BSBaseXPCClient queue_registerWithServerIfNecessary]_block_invoke (BaseBoard)

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