Messages in this thread | | | Subject | Re: Netconsole & sungem: hang when link down | From | Benjamin Herrenschmidt <> | Date | Wed, 06 Oct 2004 19:08:59 +1000 |
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On Wed, 2004-10-06 at 18:42, Colin Leroy wrote:
> > Not sure, I suppose the driver is doing printk's with spinlocks held > > from the autoneg stuff and there is a spinlock deadlock happening ... > > Thanks. I'll look into this. If I'm not mistaken, I've got no way of > catching it easily, do I ? CONFIG_DEBUG_SPINLOCK's help seems to say > that I need NMI watchdog in order to catch deadlocks, which is only > available on x86(_64).
Hrm... we have some sort of spinlock debugging, at least on ppc64...
BTW, did you have SMP or PREEMPT ? If none of these, then you should not see any spin deadlock...
The solution is to look at the code though and find what's wrong :)
Ben.
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