Re: [Xenomai-core] [BUG] oops on skincall without nucleus being loaded

[Philippe Gerum <rpm@xenomai.org>]

On Fri, 2006-06-23 at 15:41 +0200, Gilles Chanteperdrix wrote:
> Jan Kiszka wrote:
>  > Jan Kiszka wrote:
>  > > Hi,
>  > > 
>  > > wondering why suddenly things crash on invoking the latency test, I
>  > > realised that I turned the nucleus into a module which was not yet
>  > > loaded. Here is the oops in this case:
>  > 
>  > Correction: the nucleus was still compiled in, the native skin was missing.
> 
> After a few investigation, the problem appears to be that the nucleus
> assume that user-space skins will issue a bind syscall before using a
> skin, and that the user-space RTDM library does not exit if binding
> fails.

I don't get it: the muxid should be invalid then(?)

>  So, there are two ways we can fix this problem:
> - either we make the nucleus paranoid and have it handle gracefully
>   syscalls to non loaded tables;
> - or we make the user-space RTDM library behave like other skins and
>   exit if the interface is not bound.

-- 
Philippe.