rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...0: (1 GPs behind) idle=eb84/1/0x40000002 softirq=4326/4326 fqs=14588
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:        0          0            0
rcu: 	cputime:        0          0            0   ==> 149990(ms)
rcu: 	(detected by 0, t=30002 jiffies, g=6133, q=247076 ncpus=2)
Sending NMI from CPU 0 to CPUs 1: