❔ Cancel task on nested exception

private CancellationTokenSource _tokenSource;
public async Task RunBigTask()
{
    _tokenSource = new CancellationTokenSource();
    // Some logic here...
    await OtherClass.RunSmallerTasks(_tokenSource.Token); 
    // Some other logic here...
}

// In another class...
public async Task RunSmallerTasks(CancellationToken ct)
{
    for(int i = 0; i < k; i++)
    {
      ct.ThrowIfCancellationRequested();
      try
      {
        await RunSmallTask();
      } 
      catch(Exception e)
      {
        // Sending telemetry here about the exception.
      }
    }
}