Re: kern/48027: nfsserver module doesn't work

[Paul Goyette <paul%whooppee.com@localhost>]

On Mon, 8 Jul 2013, Paul Goyette wrote:

> > My inclination would be to add some printfs in that initialization
> > code to see where it does and doesn't get.
>
> Yes, that's the next step.  I've been trying to monitor progress via
> syslog() calls in userland nfsd, but now need more granularity/detail.

Hmmm, it seems that adding a printf() in the module initialization code 
"fixes" the problem.  Some sort of timing issue, maybe?

In any case, modunload(8) of the nfsserver module repeatable causes a 
kernel panic as previously described. It doesn't panic immediately, and 
in fact I've had enough time to actually confirm (with modstat(8)) that 
the module has been unloaded.  But then it panics.  I suspect that there 
is maybe some timer code that has not been stopped, and it still fires 
even after the module is unloaded?

Oh, I previously noted that the module init/fini code wasn't checking 
the error status from syscall_{,dis}establish() calls.  That was not 
correct - the status is being checked correctly.


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