On 23 Jul 2020, at 11:00, Bjoern A. Zeeb wrote:
On 23 Jul 2020, at 8:09, Kristof Provost wrote:
On 23 Jul 2020, at 9:19, Kristof Provost wrote:
On 23 Jul 2020, at 0:15, John-Mark Gurney wrote:
So, it's pretty easy to trigger, just attach a couple USB ethernet
adapters, in my case, they were ure, but likely any two spare
ethernet
interfaces will work, and wire them back to back..
I’ve been able to trigger it using epair as well:
`sudo sh testinterfaces.txt epair0a epair0b`
I did have to comment out the waitcarrier() check.
I’ve done a little bit of digging, and I think I’m starting to
see how this breaks.
This always affects the jailed vlan interfaces. They’re getting
deleted, but the ifp doesn’t go away just yet because it’s still
in use by the multicast code.
The multicast code does its cleanup in task queues,
Wow, did I miss that back then? Did I review a change and not notice?
Sorry if that was the case.
Vnet teardown is blocking and forceful.
Doing deferred cleanup work isn’t a good idea at all.
I think that is the real problem here.
I’d rather have us fix this than putting more bandaids into the
code.
Yeah, agreed. I think hselasky has a better fix:
https://reviews.freebsd.org/D24914
I just saw his e-mail in a different thread.
Best regards,
Kristof
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