* Ingo Molnar <mingo(a)elte.hu> wrote:
  in del_singleshot_timer_sync() - a classic deadlock
scenario. I dont
 yet know what the other CPU is doing, but del_singleshot_timer_sync()
 is not very preemption-friendly ... My bet is that jackd is starving
 softirqd which wants to execute the timer function that jackd is
 trying to delete => deadlock. 
yeah, this was it. I fixed this bug in my tree and i'll release -S5 in a
couple of minutes.
        Ingo