0: kd> u Ntfs!NtfsReadMftRecord+212
Ntfs!NtfsReadMftRecord+0x210:
fffff801`1bbc84a2 0090488b5c2c add byte ptr [rax+2C5C8B48h],dl
fffff801`1bbc84a8 684885db74 push 74DB8548h
fffff801`1bbc84ad 07 ???
fffff801`1bbc84ae 816304fffeffff and dword ptr [rbx+4],0FFFFFEFFh
fffff801`1bbc84b5 b001 mov al,1
fffff801`1bbc84b7 88442441 mov byte ptr [rsp+41h],al
fffff801`1bbc84bb 488b7c2450 mov rdi,qword ptr [rsp+50h]
fffff801`1bbc84c0 488bb42480000000 mov rsi,qword ptr [rsp+80h]