Min version	8.1	10 Pre RTM
Max version	8.1 Update 1	10 TH2
x64 offset offset:bitpos	Field Name
0x0000	struct _RTL_BALANCED_NODE TreeNode
0x0000	struct _SINGLE_LIST_ENTRY FreeListEntry
0x0018	void * ThreadUnsafe	unsigned long EntryFlags
0x0018	volatile uint8_t HeadNodeByte	uint8_t EntryOffset
0x0018:0x00		unsigned long StaticState
0x0019	uint8_t[6] Reserved1	uint8_t ThreadLocalFlags
0x0019:0x00		uint8_t WaitingBit
0x0018:0x08		unsigned long AllFlags
0x0019:0x01		uint8_t Spare0
0x001A		uint8_t AcquiredByte
0x001A:0x00		uint8_t AcquiredBit
0x001B		uint8_t CrossThreadFlags
0x001B:0x00		uint8_t HeadNodeBit
0x001B:0x01		uint8_t IoPriorityBit
0x001B:0x02		uint8_t Spare1
0x001C		unsigned long SpareFlags
0x001F	volatile uint8_t AcquiredByte
0x0020	struct _KLOCK_ENTRY_LOCK_STATE LockState
0x0020	void * volatile LockUnsafe
0x0020	volatile uint8_t WaitingAndBusyByte	volatile uint8_t CrossThreadReleasableAndBusyByte
0x0021	uint8_t[6] Reserved
0x0027	volatile uint8_t InTreeByte
0x0028	void * SessionState
0x0028	unsigned long SessionId
0x002C	unsigned long SessionPad
0x0030	struct _RTL_RB_TREE OwnerTree
0x0030	char CpuPriorityKey
0x0040	struct _RTL_RB_TREE WaiterTree
0x0050	uint64_t EntryLock
0x0058	uint16_t AllBoosts
0x0058:0x00	uint16_t IoBoost
0x0058:0x01	uint16_t CpuBoostsBitmap
0x005A	uint16_t IoNormalPriorityWaiterCount
0x005C:0x00	uint8_t IoPriorityBit	uint16_t SparePad
0x005C:0x01	uint8_t AbSpare
0x005D	uint8_t[3] SparePad