EtwpDisableCompression

VOID __fastcall EtwpDisableCompression(INT64 a1){
  INT64 v2; 
  UINT64 v3; 
  _ETHREAD *CurrentThread; 
  unsigned int SessionId; 
  char v6; 
  int v7; 
  unsigned __int64 v8; 
  bool v9; 
  __int64 v10; 
  __int64 v11; 
  int v12; 
  if( *(_DWORD *)(a1 + 1164) != 1
    && _InterlockedExchange((volatile __int32 *)(a1 + 1152), 0)
    && !*(_DWORD *)(a1 + 1120)
    && ObGetCurrentIrql() < 2u )
  {
    v2 = a1 + 1128;
    ExAcquirePushLockExclusiveEx(a1 + 1128, 0i64);
    EtwpRelinquishCompressionTarget(a1);
    if( (_InterlockedExchangeAdd64((volatile signed __int64 *)(a1 + 1128), 0xFFFFFFFFFFFFFFFFui64) & 6) == 2 )
      ExfTryToWakePushLock((volatile INT64 *)(a1 + 1128));
    v12 = 0;
    v3 = a1 + 1128;
    CurrentThread = (_ETHREAD *)KeGetCurrentThread();
    if( (unsigned int)MiGetSystemRegionType(v3) == 1 )
      SessionId = MmGetSessionIdEx(*((_QWORD *)CurrentThread + 23));
    else
      SessionId = -1;
    --*((_WORD *)CurrentThread + 243);
    v6 = ++*((_BYTE *)CurrentThread + 794);
    v7 = (*((char *)CurrentThread + 792) | *((char *)CurrentThread + 870)) ^ 0x3F;
    while( 1 )
    {
      v9 = !_BitScanReverse((unsigned int *)&v10, v7);
      if( v9 )
        goto LABEL_17;
      v8 = *((_QWORD *)CurrentThread + 100) + 96 * v10;
      v7 &= ~(1 << v10);
      if( (*(_BYTE *)(v8 + 26) & 1) != 0
        && (*(_DWORD *)(v8 + 32) & 1) == 0
        && (*(_QWORD *)(v8 + 32) & 0x7FFFFFFFFFFFFFFCi64) == (v2 & 0x7FFFFFFFFFFFFFFCi64)
        && *(_DWORD *)(v8 + 40) == SessionId )
      {
        *(_BYTE *)(v8 + 26) &= ~1u;
        if( *(_QWORD *)(v8 + 32) )
          break;
      }
    }
    if( !v8 )
    {
LABEL_17:
      if( (*((_DWORD *)CurrentThread + 30) & 0x10000) == 0 )
        KeBugCheckEx(0x162u, (ULONG_PTR)CurrentThread, v2, SessionId, 0i64);
      goto LABEL_24;
    }
    *(_BYTE *)(v8 + 32) |= 2u;
    if( *(__int64 *)(v8 + 32) < 0 )
      KiAbEntryRemoveFromTree(v8);
    v12 = *(_DWORD *)(v8 + 88) & 0x1FFFF;
    *(_DWORD *)(v8 + 88) &= 0xFFFE0000;
    *(_BYTE *)(v8 + 25) &= ~1u;
    *(_QWORD *)(v8 + 32) = 0i64;
    v11 = (__int64)(v8 - *((_QWORD *)CurrentThread + 100)) / 96;
    if( v6 == 1 )
      *((_BYTE *)CurrentThread + 792) |= 1 << v11;
    else
      _InterlockedOr8((volatile signed __int8 *)CurrentThread + 870, 1 << v11);
LABEL_24:
    --*((_BYTE *)CurrentThread + 794);
    KiAbThreadRemoveBoosts((ULONG_PTR)CurrentThread, v2, (unsigned int *)&v12);
    v9 = (*((_WORD *)CurrentThread + 243))++ == 0xFFFF;
    if( v9 && *((_ETHREAD **)CurrentThread + 19) != (_ETHREAD *)((char *)CurrentThread + 152) )
      KiCheckForKernelApcDelivery();
  }
}

Referenced by: