rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P24/1:b.el
rcu: 	(detected by 0, t=10502 jiffies, g=63385, q=7347 ncpus=2)
task:kworker/1:0     state:R  running task     stack:23240 pid:24    tgid:24    ppid:2      task_flags:0x4208060 flags:0x00080000
Workqueue: events nsim_fib_event_work
Call Trace:
 <TASK>
 __schedule+0x17b4/0x5680
 preempt_schedule_notrace+0x57/0x90
 preempt_schedule_notrace_thunk+0x16/0x30
 perf_trace_lock_acquire+0x3a3/0x440
 lock_acquire+0x2ff/0x350
 unwind_next_frame+0xc3/0x2550
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5c/0x80
 kfree+0x1c5/0x640
 nsim_fib_event+0x9f8/0xa410
 nsim_fib_event_work+0x254/0x3d0
 process_scheduled_works+0xb5d/0x1860
 worker_thread+0xa53/0xfc0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
