rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P14709/2:b..l
rcu: 	(detected by 0, t=10503 jiffies, g=269153, q=252 ncpus=2)
task:kworker/u4:21   state:R  running task     stack:28688 pid:14709 ppid:2      flags:0x00004000
Workqueue: bond1280 bond_mii_monitor
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5381 [inline]
 __schedule+0xecb/0x59d0 kernel/sched/core.c:6710
 preempt_schedule_irq+0x52/0x90 kernel/sched/core.c:7022
 irqentry_exit+0x35/0x80 kernel/entry/common.c:433
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:write_comp_data+0x3c/0x90 kernel/kcov.c:236
Code: 01 00 00 49 89 f8 65 48 8b 14 25 80 b9 03 00 a9 00 01 ff 00 74 0e 85 f6 74 59 8b 82 04 16 00 00 85 c0 74 4f 8b 82 e0 15 00 00 <83> f8 03 75 44 48 8b 82 e8 15 00 00 8b 92 e4 15 00 00 48 8b 38 48
RSP: 0018:ffffc9001a137b90 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff888092d4cc80 RCX: ffffffff8586e20c
RDX: ffff88809d4e0000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880913efe78
R13: ffff888092d4cc80 R14: ffff888092d4cfe0 R15: ffff888092d4cfe0
 rcu_read_lock include/linux/rcupdate.h:750 [inline]
 bond_should_notify_peers+0x4c/0x4d0 drivers/net/bonding/bond_main.c:1127
 bond_mii_monitor+0x162/0x2b80 drivers/net/bonding/bond_main.c:2809
 process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2597
 worker_thread+0x687/0x1110 kernel/workqueue.c:2748
 kthread+0x33a/0x430 kernel/kthread.c:389
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>