PopPepRemoveDevice

VOID __stdcall PopPepRemoveDevice(INT64 *a1){
  _ETHREAD *CurrentThread; 
  INT64 v3; 
  INT64 **v4; 
  char v5; 
  _ETHREAD *v6; 
  unsigned int SessionId; 
  unsigned __int8 v8; 
  int v9; 
  bool v10; 
  __int64 v11; 
  _KLOCK_ENTRY *v12; 
  int v13; 
  unsigned int v14; 
  __int64 v15; 
  UINT64 a3; 

  CurrentThread = (_ETHREAD *)KeGetCurrentThread();
  --CurrentThread->Tcb.KernelApcDisable;
  ExAcquirePushLockSharedEx((_EX_PUSH_LOCK *)&PopIrpWorkerControlEvent + 365, 0i64);
  ExAcquirePushLockExclusiveEx((_EX_PUSH_LOCK *)&PopIrpWorkerControlEvent + 356, 0i64);
  if( (INT64 *)*(&stru_140C00F40 + 216) == a1 )
    *(&stru_140C00F40 + 216) = *a1;
  v3 = *a1;
  if( *(INT64 **)(*a1 + 8) != a1 || (v4 = (INT64 **)a1[1], *v4 != a1) )
    __fastfail(3u);
  *v4 = (INT64 *)v3;
  *(_QWORD *)(v3 + 8) = v4;
  v5 = _InterlockedExchangeAdd64((_QWORD *)&PopIrpWorkerControlEvent + 356, 0xFFFFFFFFFFFFFFFFui64);
  if( (v5 & 2) != 0 && (v5 & 4) == 0 )
    ExfTryToWakePushLock((_EX_PUSH_LOCK *)&PopIrpWorkerControlEvent + 356);
  v6 = (_ETHREAD *)KeGetCurrentThread();
  LODWORD(a3) = 0;
  if( MiGetSystemRegionType((UINT64)&PopIrpWorkerControlEvent + 2848) == 1 )
    SessionId = MmGetSessionIdEx(v6->Tcb.ApcState.Process);
  else
    SessionId = -1;
  --v6->Tcb.SpecialApcDisable;
  v8 = ++v6->Tcb.AbAllocationRegionCount;
  v9 = ((char)v6->Tcb.AbEntrySummary | (char)v6->Tcb.AbOrphanedEntrySummary) ^ 0x3F;
  while( 1 )
  {
    v10 = !_BitScanReverse((unsigned int *)&v11, v9);
    if( v10 )
      break;
    v12 = &v6->Tcb.LockEntries[v11];
    v9 &= ~(1 << v11);
    if( (v12->AcquiredByte & 1) != 0
      && (v12->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 1) == 0
      && (v12->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 0x7FFFFFFFFFFFFFFCi64) == (((unsigned __int64)&PopIrpWorkerControlEvent
                                                                                              + 2848) & 0x7FFFFFFFFFFFFFFCi64)
      && v12->LockState.SessionId == SessionId )
    {
      v12->AcquiredByte &= ~1u;
      if( v12->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 )
      {
        if( v12 )
        {
          v12->CrossThreadReleasableAndBusyByte |= 2u;
          if( v12->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 < 0 )
            KiAbEntryRemoveFromTree(v12);
          v13 = v12->BoostBitmap.AllFields & 0x1FFFF;
          v14 = v12->BoostBitmap.AllFields & 0xFFFE0000;
          v12->ThreadLocalFlags &= ~1u;
          LODWORD(a3) = v13;
          v12->BoostBitmap.AllFields = v14;
          v12->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 = 0i64;
          v15 = v12 - v6->Tcb.LockEntries;
          if( v8 == 1 )
            v6->Tcb.AbEntrySummary |= 1 << v15;
          else
            _InterlockedOr8((volatile signed __int8 *)&v6->Tcb.AbOrphanedEntrySummary, 1 << v15);
          goto LABEL_20;
        }
        break;
      }
    }
  }
  if( (*(&v6->Tcb.MiscFlags + 1) & 0x10000) == 0 )
    KeBugCheckEx(0x162u, v6, (char *)&PopIrpWorkerControlEvent + 2848, (PVOID)SessionId, 0i64);
LABEL_20:
  --v6->Tcb.AbAllocationRegionCount;
  KiAbThreadRemoveBoosts(&v6->Tcb, (char *)&PopIrpWorkerControlEvent + 2848, &a3);
  v10 = v6->Tcb.SpecialApcDisable++ == -1;
  if( v10 && ($F25F8C4BA33AF922A5F1AF68CD89DDDF *)v6->Tcb.ApcState.ApcListHead[0].Flink != &v6->Tcb.152 )
    KiCheckForKernelApcDelivery();
  if( _InterlockedCompareExchange64((_QWORD *)&PopIrpWorkerControlEvent + 365, 0i64, 17i64) != 17 )
    ExfReleasePushLockShared((_EX_PUSH_LOCK *)&PopIrpWorkerControlEvent + 365);
  KeAbPostRelease((char *)&PopIrpWorkerControlEvent + 2920);
  KeLeaveCriticalRegionThread(KeGetCurrentThread());
}

Referenced by: