!wa_systemcb

kd> !wdbgark.help wa_systemcb
!wa_systemcb [/type <o>]
  /type <o> - type,Callback type name:
              image, process, thread, registry, bugcheck, bugcheckreason,
              bugcheckaddpages, powersetting, callbackdir, shutdown,
              shutdownlast, drvreinit, bootdrvreinit, fschange, nmi,
              logonsessionroutine, prioritycallback, pnp, lego, debugprint,
              alpcplog, empcb, ioperf, dbgklkmd
Output kernel-mode registered callback(s)