On Tue, Jul 16, 2013 at 09:02:15AM +0300, Gleb Natapov wrote:> BTW can NMI handler take spinlocks? No -- that is, yes you can using trylock, but you still shouldn't.> If it can what happens if NMI is> delivered in a section protected by local_irq_save()/local_irq_restore()?You deadlock.