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Date: Wed, 3 Sep 2003 06:28:09 -0400
From: "James F.  Hranicky" <jfh@cise.ufl.edu>
To: Robert Watson <rwatson@FreeBSD.org>
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Subject: Re: conf/56031: ipfw hangs on every invocation
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On Tue, 2 Sep 2003 12:10:28 -0400 (EDT)
Robert Watson <rwatson@FreeBSD.org> wrote:

> 
> On Tue, 2 Sep 2003, James F.  Hranicky wrote:
> 
> > Let me know if I can provide any more info. 
> 
> This seems to suggest it's really just the userland application spinning,
> not a hang in the kernel.  Could you try using truss to see if, once it
> starts spinning, it's making system calls, or just stuck entirely in
> userspace?

As far as I can tell it's hanging in the last ioctl() .

> Assuming it's purely a userspace problem (perhaps triggered by
> syntactically poor output from the kernel), the next thing to do is
> probably to instrument your ipfw binary with either printfs or debugging
> symbols and see where in its execution it is spinning.  

I can compile it with debugging symbols and trace through the execution, 
but it seems like the ioctl() is where it's hanging, again some kind of
odd terminal thing.

> Could you include a list of your IPFW rules also, please?  

I don't have any set at this time, just the default pass any any. 

I'll trace through it with gdb if you think it will help.

Jim