rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P15
rcu: 	(detected by 0, t=10502 jiffies, g=12149, q=829 ncpus=2)
task:ksoftirqd/0     state:R  running task     stack:22208 pid:15    tgid:15    ppid:2      task_flags:0x4208040 flags:0x00080000
Call Trace:
 <IRQ>
 sched_show_task+0x4aa/0x5f0 kernel/sched/core.c:8220
 rcu_print_detail_task_stall_rnp kernel/rcu/tree_stall.h:292 [inline]
 print_other_cpu_stall+0xfbf/0x1350 kernel/rcu/tree_stall.h:683
 check_cpu_stall kernel/rcu/tree_stall.h:860 [inline]
 rcu_pending kernel/rcu/tree.c:3744 [inline]
 rcu_sched_clock_irq+0x9fe/0x10e0 kernel/rcu/tree.c:2749
 update_process_times+0x234/0x2d0 kernel/time/timer.c:2475
 tick_sched_handle kernel/time/tick-sched.c:296 [inline]
 tick_nohz_handler+0x38f/0x6b0 kernel/time/tick-sched.c:317
 __run_hrtimer kernel/time/hrtimer.c:2067 [inline]
 __hrtimer_run_queues+0x3a0/0xaf0 kernel/time/hrtimer.c:2124
 hrtimer_interrupt+0x4c2/0xa80 kernel/time/hrtimer.c:2243
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1051 [inline]
 __sysvec_apic_timer_interrupt+0x102/0x430 arch/x86/kernel/apic/apic.c:1068
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1062
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:211 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x47/0x80 kernel/locking/spinlock.c:221
Code: f7 e8 5d 0a 49 f6 f7 c3 00 02 00 00 74 05 e8 60 57 75 f6 9c 58 a9 00 02 00 00 75 29 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> d4 36 3b f6 65 48 8b 05 3c 55 4b 07 48 85 c0 74 18 5b 41 5e e9
RSP: 0018:ffffc90000147128 EFLAGS: 00000206
RAX: 0000000000000016 RBX: 0000000000000246 RCX: 8000000000000002
RDX: 0000000000000002 RSI: ffffffff8d8ca675 RDI: 0000000000000001
RBP: ffffc900001471f8 R08: ffffffff8fb1de7f R09: 1ffffffff1f63bcf
R10: dffffc0000000000 R11: fffffbfff1f63bd0 R12: 1ffff92000028e31
R13: 0000000000000246 R14: ffff888044e007e8 R15: ffffc90000147180
 raw_spin_unlock_irqrestore_wake include/linux/sched/wake_q.h:97 [inline]
 rtlock_slowlock kernel/locking/rtmutex.c:1923 [inline]
 rtlock_lock kernel/locking/spinlock_rt.c:43 [inline]
 __rt_spin_lock kernel/locking/spinlock_rt.c:49 [inline]
 rt_spin_lock+0x17a/0x400 kernel/locking/spinlock_rt.c:57
 spin_lock include/linux/spinlock_rt.h:45 [inline]
 wiphy_work_queue+0xbc/0x380 net/wireless/core.c:1887
 __ieee80211_queue_skb_to_iface+0xef/0x290 net/mac80211/rx.c:239
 ieee80211_queue_skb_to_iface net/mac80211/rx.c:261 [inline]
 ieee80211_rx_h_mgmt+0x422/0x5a0 net/mac80211/rx.c:4207
 ieee80211_rx_handlers+0x75a7/0xc8d0 net/mac80211/rx.c:4284
 ieee80211_invoke_rx_handlers+0xe9a/0x2a00 net/mac80211/rx.c:4314
 ieee80211_prepare_and_rx_handle+0xe04/0x4b30 net/mac80211/rx.c:-1
 __ieee80211_rx_handle_packet net/mac80211/rx.c:5547 [inline]
 ieee80211_rx_list+0x2e99/0x3b40 net/mac80211/rx.c:5720
 ieee80211_rx_napi+0x1ad/0x3d0 net/mac80211/rx.c:5743
 ieee80211_rx include/net/mac80211.h:5449 [inline]
 ieee80211_handle_queued_frames+0xe4/0x1d0 net/mac80211/main.c:452
 tasklet_action_common+0x31c/0x600 kernel/softirq.c:970
 handle_softirqs+0x1da/0x6d0 kernel/softirq.c:645
 run_ksoftirqd+0x53/0x190 kernel/softirq.c:1108
 smpboot_thread_fn+0x565/0xa70 kernel/smpboot.c:160
 kthread+0x38b/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>