!usbkd.usbportmddevext
O comando !usbkd.usbportmddevext exibe uma estrutura usbport!_DEVICE_EXTENSION se houver uma em um despejo de memória gerado como resultado da verificação de bug 0xFE.
!usbkd.usbportmddevext
DLL
Usbkd.dll
Comentários
Use esse comando somente quando você estiver depurando um arquivo de despejo de memória gerado como resultado da verificação de bug 0xFE: BUGCODE_USB_DRIVER.
Exemplos
Este é um exemplo da saída de !usbportmddevext.
1: kd> !analyze -v
*** ...
BUGCODE_USB_DRIVER (fe)
...
1: kd> !usbkd.usbportmddevext
USBPORT.SYS DEVICE_EXTENSION DATA:
Hcd FDO Extension:
Sig:4f444648 HFDO
CurrentPnpFunc: 0x00000008
PnpFuncHistoryIdx: 0x0000000d
CurrentPowerFunc: 0x00000000
PowerFuncHistoryIdx: 0x00000000
PnpLogIdx: 0x00000002
IoRequestCount: 0x00000007
IoRequestAsyncCallbackCount: 0xffffffff
IoRequestAllow: 0x00000000
Pnp Func History (idx 13)
...
[02] pnp 13 (0d) IRP_MN_FILTER_RESOURCE_REQUIREMENTS
[...
Power Func History (idx 0)
[01] pnp 255 (ff) ??? (x0) PowerDeviceUnspecified
...
**Power and Wake -----------------------------------------------
selective suspend:on (1)
PowerFlags (00000080):
*---FDO---*
PMDebug: 0x00000000
MinAllocedBw: 0x00000000
MaxAllocedBw: 0x00000000
## ...
## XDPC HISTORY_UsbHcIntDpc
State History (idx 2)
EVENT, STATE, NEXT
Log[3] @ 000000d9e7c615cc
Ev_Xdpc_Worker XDPC_DpcQueued XDPC_Running
## ...
## XDPC HISTORY_UsbDoneDpc
State History (idx 0)
EVENT, STATE, NEXT
Log[1] @ 000000d9e7c61774
Ev_Xdpc_Worker XDPC_DpcQueued XDPC_Running
## ...
## XDPC HISTORY_UsbMapDpc
State History (idx 3)
EVENT, STATE, NEXT
Log[4] @ 000000d9e7c6196c
## ...
## XDPC HISTORY_UsbIocDpc
State History (idx 0)
EVENT, STATE, NEXT
Log[1] @ 000000d9e7c61b04
Ev_Xdpc_Worker XDPC_DpcQueued XDPC_Running
...