rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P4259 } 4 jiffies s: 9929 root: 0x0/T
rcu: blocking rcu_node structures (internal RCU debug):
rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P8 } 4 jiffies s: 10097 root: 0x0/T
rcu: blocking rcu_node structures (internal RCU debug):