PopFxRemoveDevice

VOID __fastcall PopFxRemoveDevice(_EX_PUSH_LOCK *DeviceListLock, _POP_FX_DEVICE *FxDevice){
  _ETHREAD *CurrentThread; 
  __int64 v4; 
  _POP_FX_DEVICE **v5; 
  char v6; 
  _ETHREAD *v7; 
  unsigned int SessionId; 
  unsigned __int8 v9; 
  int v10; 
  bool v11; 
  __int64 v12; 
  _KLOCK_ENTRY *v13; 
  int v14; 
  unsigned int v15; 
  __int64 v16; 
  UINT64 a3; 

  CurrentThread = (_ETHREAD *)KeGetCurrentThread();
  --CurrentThread->Tcb.KernelApcDisable;
  ExAcquirePushLockExclusiveEx((_EX_PUSH_LOCK *)&stru_140C23628 + 489, 0i64);
  v4 = *(_QWORD *)FxDevice;
  if( *(_POP_FX_DEVICE **)(*(_QWORD *)FxDevice + 8i64) != FxDevice
    || (v5 = (_POP_FX_DEVICE **)*((_QWORD *)FxDevice + 1), *v5 != FxDevice) )
  {
    __fastfail(3u);
  }
  *v5 = (_POP_FX_DEVICE *)v4;
  *(_QWORD *)(v4 + 8) = v5;
  v6 = _InterlockedExchangeAdd64((_QWORD *)&stru_140C23628 + 489, 0xFFFFFFFFFFFFFFFFui64);
  if( (v6 & 2) != 0 && (v6 & 4) == 0 )
    ExfTryToWakePushLock((_EX_PUSH_LOCK *)&stru_140C23628 + 489);
  LODWORD(a3) = 0;
  v7 = (_ETHREAD *)KeGetCurrentThread();
  if( MiGetSystemRegionType((UINT64)&stru_140C23628 + 3912) == 1 )
    SessionId = MmGetSessionIdEx(v7->Tcb.ApcState.Process);
  else
    SessionId = -1;
  --v7->Tcb.SpecialApcDisable;
  v9 = ++v7->Tcb.AbAllocationRegionCount;
  v10 = ((char)v7->Tcb.AbEntrySummary | (char)v7->Tcb.AbOrphanedEntrySummary) ^ 0x3F;
  while( 1 )
  {
    v11 = !_BitScanReverse((unsigned int *)&v12, v10);
    if( v11 )
      break;
    v13 = &v7->Tcb.LockEntries[v12];
    v10 &= ~(1 << v12);
    if( (v13->AcquiredByte & 1) != 0
      && (v13->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 1) == 0
      && (v13->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 0x7FFFFFFFFFFFFFFCi64) == (((unsigned __int64)&stru_140C23628
                                                                                              + 3912) & 0x7FFFFFFFFFFFFFFCi64)
      && v13->LockState.SessionId == SessionId )
    {
      v13->AcquiredByte &= ~1u;
      if( v13->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 )
      {
        if( v13 )
        {
          v13->CrossThreadReleasableAndBusyByte |= 2u;
          if( v13->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 < 0 )
            KiAbEntryRemoveFromTree(v13);
          v14 = v13->BoostBitmap.AllFields & 0x1FFFF;
          v15 = v13->BoostBitmap.AllFields & 0xFFFE0000;
          v13->ThreadLocalFlags &= ~1u;
          LODWORD(a3) = v14;
          v13->BoostBitmap.AllFields = v15;
          v13->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 = 0i64;
          v16 = v13 - v7->Tcb.LockEntries;
          if( v9 == 1 )
            v7->Tcb.AbEntrySummary |= 1 << v16;
          else
            _InterlockedOr8((volatile signed __int8 *)&v7->Tcb.AbOrphanedEntrySummary, 1 << v16);
          goto LABEL_18;
        }
        break;
      }
    }
  }
  if( (*(&v7->Tcb.MiscFlags + 1) & 0x10000) == 0 )
    KeBugCheckEx(0x162u, v7, (char *)&stru_140C23628 + 3912, (PVOID)SessionId, 0i64);
LABEL_18:
  --v7->Tcb.AbAllocationRegionCount;
  KiAbThreadRemoveBoosts(&v7->Tcb, (char *)&stru_140C23628 + 3912, &a3);
  v11 = v7->Tcb.SpecialApcDisable++ == -1;
  if( v11 && ($F25F8C4BA33AF922A5F1AF68CD89DDDF *)v7->Tcb.ApcState.ApcListHead[0].Flink != &v7->Tcb.152 )
    KiCheckForKernelApcDelivery();
  KeLeaveCriticalRegionThread(KeGetCurrentThread());
}

Referenced by: