rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...0: (2 ticks this GP) idle=ab9c/1/0x40000002 softirq=12699/12699 fqs=5995
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:        0          0            0
rcu: 	cputime:        0          0            0   ==> 150040(ms)
rcu: 	(detected by 1, t=30005 jiffies, g=22549, q=1839 ncpus=2)
Sending NMI from CPU 1 to CPUs 0: