0: kd> !devstack ffff838e9362e060
!DevObj !DrvObj !DevExt ObjectName
ffff838e98208050 Unable to load image rt640x64.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for rt640x64.sys
\Driver\rt640x64 ffff838e982081a0 InfoMask field not found for _OBJECT_HEADER at ffff838e98208020
ffff838e921a8de0 \Driver\ACPI ffff838e93374010 InfoMask field not found for _OBJECT_HEADER at ffff838e921a8db0
> ffff838e9362e060 \Driver\pci ffff838e9362e1b0 Cannot read info offset from nt!ObpInfoMaskToOffset
!DevNode ffff838e9362eba0 :
DeviceInst is "PCI\VEN_10EC&DEV_8126&SUBSYS_7E561462&REV_01\01000000684CE00000"
ServiceName is "rt640x64"