rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-...D } 2630 jiffies s: 2409 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Task dump for CPU 1:
task:kworker/u4:1    state:R  running task     stack:0     pid:12    ppid:2      flags:0x0000000a
Workqueue: bat_events batadv_nc_worker
Call trace:
 __switch_to+0x320/0x754 arch/arm64/kernel/process.c:556
 debug_objects_fill_pool.fill_pool_map+0x0/0x60