Re: ipv6: tunnel: hang when destroying ipv6 tunnel

[Tetsuo Handa]

Tetsuo Handa wrote:
> Good. -512 is -ERESTARTSYS, and this hang occurs after -ERESTARTSYS is
> returned. It indicates that c->trans_mod->request() is interrupted by signal.
> Since c->trans_mod->request is pointing at p9_virtio_request, the location
> returning that error would be
(...snipped...)
> 281                         err = wait_event_interruptible(*chan->vc_wq,
> 282                                                         chan->ring_bufs_avail);
> 
>    here.

Oops. Not p9_virtio_request().

It is p9_client_rpc(). I misread the output lines.

> > > +	printk("%u:req->status = %u\n", current->pid, req->status);
> > >  	err = wait_event_interruptible(*req->wq,
> > >  				       req->status >= REQ_STATUS_RCVD);
> > > +	printk("%u:wait = %d\n", current->pid, err);

But anyway, I think this is interupt related bug.
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