Re: serial: Fix race for IOCTL_SERIAL_WAIT_ON_MASK

[Alexandre Julliard]

Wolfgang Walter  writes:
> So this is my theorie:
> -
>
> wait_on() is called.
> -
>
> wait_on() calls RtlQueueWorkItem(wait_for_event, commio, 0 /* FIXME */)
> and returns with STATUS_PENDING
> -
>
> wait_for_event() finishes and sets iosb before io_control() continues
> -
>
> io_control sets iosb to STATUS_PENDING

The last one is a bug. iosb should only be set once we have a
result. Check how the other async I/O functions do it.