Re: unloading a module with no exit routine?

["Robert P. J. Day" <rpjday@xxxxxxxxxxxxxx>]

On Sun, 28 Jun 2009, Mulyadi Santosa wrote:

> On Sun, Jun 28, 2009 at 12:58 AM, Robert P. J. Day<rpjday@xxxxxxxxxxxxxx> wrote:
> >
> >  as i read it, if you build and load a module with no exit() routine,
> > once that module's loaded, it is absolutely unloadable until you
> > reboot the system, is that correct?  i just tested that and, via
> > lsmod, i see:
> >
> > $ lsmod
> > ...
> > hi                      1760  0 [permanent]
> >
> >  that certainly suggests to *me* that it's there for good, no matter
> > what i do.  is that correct?
>
> what happen if you forcefully unload that "hi" module? let's put aside
> any memory leakage etc.... I guess the kernel has somewhat "generic"
> unload function.

 "rmmod -f" has no effect.  i may take a look at the source code for
rmmod, but i'm starting to think that that module is truly unloadable
at this point.

rday
--

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Robert P. J. Day                               Waterloo, Ontario, CANADA

        Linux Consulting, Training and Annoying Kernel Pedantry.

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