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On Sun, Oct 20, 2013 at 09:39:26AM +0300, Julian Anastasov wrote:
>
> Hello,
>
> On Sat, 19 Oct 2013, Hannes Frederic Sowa wrote:
>
> > On Sat, Oct 19, 2013 at 07:37:10PM +0300, Julian Anastasov wrote:
> > >
> > > Problem with process stack? May be some packet loop
> > > happens? Because I can not reproduce such problem in my
> > > virtual setup, I tested TEE too, with careful packet
> > > matching and 1 CPU. Should I assume that you don't have such
> > > oops when the patch is not applied, with the same TEE rule?
> >
> > Oh, sorry, you are right. It happens with an unpatched net-next kernel,
> > too.
> >
> > I inserted the TEE rule in mangel/OUTGOING and had only one route, ip -6 r a
> > default via fe80::1 dev eth0 which at the time of the panic was actually not
> > reachable.
>
> Thanks for the confirmation! I'll try later
> to reproduce such problem with TEE, it is interesting
> to know the real reason for this loop.
Yup, I have a patch in works wich defers the ndisc_send_ns call in
rt6_probe into a workqueue out of the call stack. This should solve
the problem.
Still wonder if there is a nicer api as to create a new structure and pass the
arguments via container_of dereferencing to the deferred function (and I
don't think async calls are useable there).
Greetings,
Hannes
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