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SubjectRe: netconsole system freeze when cable unplugged
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Simon Arlott <simon@fire.lp0.eu> writes:

> On 09/03/07 20:42, Francois Romieu wrote:
> > Simon Arlott <simon@fire.lp0.eu> :
> >> When I unplug the cable the system just stops responding to
> >> anything, at all. No message is printed to the console when the
> >> cable is plugged back in.
> > rtl8139_interrupt (spin_lock(&tp->lock))
> > -> rtl8139_weird_interrupt
> > -> rtl_check_media
> > -> mii_check_media (printk(KERN_INFO "%s: link down\n", ...))
> > [netpoll stuff here]
> > -> rtl8139_poll_controller
> > -> rtl8139_interrupt
> > *deadlock*
> > See below for my random stuff of the day. Feel free to open a PR at
> > bugzilla.kernel.org if the issue does not go away.
>
> The patch doesn't fix it, nothing changes. I'm not sure how this can
> be debugged if printk won't work...

earlyprintk can be called directly (early_printk()) and should
work. It won't log over the network of course.

-Andi
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