Re: Unable to halt or reboot due to - unregister_netdevice: waiting for eth0.20 to become free. Usage count = 1

[Ben Greear <greearb@candelatech.com>]

Jesper Juhl wrote:
> Ok, I've done some more testing and it seems, unfortunately, that I
> can't trigger the problem reliably. I guess I was just "lucky" with my
> first few reboots.
> It now seems that uptime and/or amount of data that has flowed over
> the vlan interface impacts the probability of hitting the problem.

Back when I was chasing the neighbor table leak, I wrote a patch to
catch ref-count leaks for net devices.  It was against 2.6.13 or so,
but if nothing else is helping, it might be worth dusting off.

I put what I believe was the last iteration of that patch here:

http://www.candelatech.com/oss/rfcnt.patch

Thanks,
Ben

--
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc  http://www.candelatech.com

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