struct _VI_TRACK_IRQL// Size=0x20
{
    void * Thread;// Offset=0x0 Size=0x4
    unsigned char OldIrql;// Offset=0x4 Size=0x1
    unsigned char NewIrql;// Offset=0x5 Size=0x1
    unsigned short Processor;// Offset=0x6 Size=0x2
    unsigned long TickCount;// Offset=0x8 Size=0x4
    void * StackTrace[5];// Offset=0xc Size=0x14
};