rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P16
rcu: 	(detected by 0, t=10532 jiffies, g=18409, q=12990 ncpus=2)
task:ktimers/0       state:R  running task     stack:24288 pid:16    tgid:16    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:llist_empty include/linux/llist.h:218 [inline]
RIP: 0010:__netif_schedule+0x2b/0x200 net/core/dev.c:3447
Code: 0f 1e fa 55 41 57 41 56 41 55 41 54 53 50 48 89 fb 49 bd 00 00 00 00 00 fc ff df e8 3f d6 a0 f8 4c 8d b3 c8 02 00 00 4c 89 f0 <48> c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 32 93 0c f9 49 83 3e
RSP: 0018:ffffc90000157ab0 EFLAGS: 00000246
RAX: ffff888040a662c8 RBX: ffff888040a66000 RCX: ffff88801ce80000
RDX: 0000000000000000 RSI: 0000000000000100 RDI: 0000000000000100
RBP: 0000000000000001 R08: 0000000000000100 R09: 0000000000000100
R10: 0000000000000000 R11: ffffffff8e1c3ac0 R12: ffff8880603fc800
R13: dffffc0000000000 R14: ffff888040a662c8 R15: ffff888040a66480
 advance_sched+0xa93/0xc90 net/sched/sch_taprio.c:994
 __run_hrtimer kernel/time/hrtimer.c:2067 [inline]
 __hrtimer_run_queues+0x3eb/0xaf0 kernel/time/hrtimer.c:2124
 hrtimer_run_softirq+0x1e1/0x2e0 kernel/time/hrtimer.c:2141
 handle_softirqs+0x1da/0x6d0 kernel/softirq.c:645
 __do_softirq kernel/softirq.c:679 [inline]
 run_ktimerd+0x6a/0x100 kernel/softirq.c:1183
 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>