rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-...!: (1 GPs behind) idle=2fe/0/0x3 softirq=9175/9176 fqs=33
(t=10500 jiffies g=7065 q=44)
rcu: rcu_preempt kthread starved for 10434 jiffies! g7065 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
rcu: RCU grace-period kthread stack dump:
rcu_preempt I29552 10 2 0x80004000
Call Trace:
context_switch kernel/sched/core.c:3265 [inline]
__schedule+0x76e/0x17a0 kernel/sched/core.c:3937
schedule+0xd9/0x260 kernel/sched/core.c:4004
schedule_timeout+0x486/0xc50 kernel/time/timer.c:1893
rcu_gp_fqs_loop kernel/rcu/tree.c:1639 [inline]
rcu_gp_kthread+0x9b2/0x18d0 kernel/rcu/tree.c:1799
kthread+0x361/0x430 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
NMI backtrace for cpu 0
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0-rc6-next-20190830 #75
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x172/0x1f0 lib/dump_stack.c:113
nmi_cpu_backtrace.cold+0x70/0xb2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x23b/0x28b lib/nmi_backtrace.c:62
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_dump_cpu_stacks+0x183/0x1cf kernel/rcu/tree_stall.h:254
print_cpu_stall kernel/rcu/tree_stall.h:455 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:529 [inline]
rcu_pending kernel/rcu/tree.c:2795 [inline]
rcu_sched_clock_irq.cold+0x4fd/0xc12 kernel/rcu/tree.c:2244
update_process_times+0x2d/0x70 kernel/time/timer.c:1724
tick_sched_handle+0xa2/0x190 kernel/time/tick-sched.c:167
tick_sched_timer+0x53/0x140 kernel/time/tick-sched.c:1299
__run_hrtimer kernel/time/hrtimer.c:1504 [inline]
__hrtimer_run_queues+0x364/0xe40 kernel/time/hrtimer.c:1566
hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1628
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1106 [inline]
smp_apic_timer_interrupt+0x160/0x610 arch/x86/kernel/apic/apic.c:1131
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830
RIP: 0010:__list_del_entry_valid+0xc7/0xf5 lib/list_debug.c:61
Code: b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 24 49 8b 55 08 4c 39 f2 0f 85 aa 00 00 00 41 5c b8 01 00 00 00 <41> 5d 41 5e 5d c3 e8 de 70 6a fe e9 55 ff ff ff e8 d4 70 6a fe eb
RSP: 0018:ffff8880ae808f08 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000001 RBX: ffff88809fabe2f8 RCX: ffffffff85cb69b9
RDX: ffff88809fabe2f8 RSI: ffffffff85cb6e86 RDI: ffff88809fabe398
RBP: ffff8880ae808f18 R08: ffffffff88e7a180 R09: fffffbfff14ed341
R10: ffffffff88e7ab38 R11: ffffffff88e7a180 R12: dffffc0000000000
R13: ffff88809fabe390 R14: ffff88809fabe2f8 R15: 0000000000000000
__list_del_entry include/linux/list.h:131 [inline]
list_move_tail include/linux/list.h:213 [inline]
hhf_dequeue+0x5c5/0xa20 net/sched/sch_hhf.c:439
dequeue_skb net/sched/sch_generic.c:258 [inline]
qdisc_restart net/sched/sch_generic.c:361 [inline]
__qdisc_run+0x1e7/0x19d0 net/sched/sch_generic.c:379
__dev_xmit_skb net/core/dev.c:3533 [inline]
__dev_queue_xmit+0x16f1/0x37c0 net/core/dev.c:3838
dev_queue_xmit+0x18/0x20 net/core/dev.c:3902
br_dev_queue_push_xmit+0x3f3/0x5e0 net/bridge/br_forward.c:52
NF_HOOK include/linux/netfilter.h:305 [inline]
NF_HOOK include/linux/netfilter.h:299 [inline]
br_forward_finish+0xfa/0x400 net/bridge/br_forward.c:65
NF_HOOK include/linux/netfilter.h:305 [inline]
NF_HOOK include/linux/netfilter.h:299 [inline]
__br_forward+0x641/0xb00 net/bridge/br_forward.c:109
deliver_clone+0x61/0xc0 net/bridge/br_forward.c:125
maybe_deliver+0x2c7/0x390 net/bridge/br_forward.c:181
br_flood+0x13a/0x3d0 net/bridge/br_forward.c:223
br_dev_xmit+0x98c/0x15a0 net/bridge/br_device.c:100
__netdev_start_xmit include/linux/netdevice.h:4419 [inline]
netdev_start_xmit include/linux/netdevice.h:4433 [inline]
xmit_one net/core/dev.c:3280 [inline]
dev_hard_start_xmit+0x1a3/0x9c0 net/core/dev.c:3296
__dev_queue_xmit+0x2b82/0x37c0 net/core/dev.c:3869
dev_queue_xmit+0x18/0x20 net/core/dev.c:3902
neigh_hh_output include/net/neighbour.h:500 [inline]
neigh_output include/net/neighbour.h:509 [inline]
ip6_finish_output2+0xf58/0x2550 net/ipv6/ip6_output.c:116
__ip6_finish_output+0x444/0xaa0 net/ipv6/ip6_output.c:142
ip6_finish_output+0x38/0x1f0 net/ipv6/ip6_output.c:152
NF_HOOK_COND include/linux/netfilter.h:294 [inline]
ip6_output+0x235/0x7f0 net/ipv6/ip6_output.c:175
dst_output include/net/dst.h:436 [inline]
NF_HOOK include/linux/netfilter.h:305 [inline]
NF_HOOK include/linux/netfilter.h:299 [inline]
mld_sendpack+0x9c7/0xed0 net/ipv6/mcast.c:1682
mld_send_cr net/ipv6/mcast.c:1978 [inline]
mld_ifc_timer_expire+0x449/0x8a0 net/ipv6/mcast.c:2477
call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404
expire_timers kernel/time/timer.c:1449 [inline]
__run_timers kernel/time/timer.c:1771 [inline]
__run_timers kernel/time/timer.c:1738 [inline]
run_timer_softirq+0x6c0/0x17f0 kernel/time/timer.c:1784
__do_softirq+0x262/0x98c kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x19b/0x1e0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1133
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830
RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61
Code: 38 c1 69 fa eb 8a 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 64 b8 64 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 54 b8 64 00 fb f4 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 5e a7 1c fa e8 69
RSP: 0018:ffffffff88e07c50 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff11e5db7 RBX: 0000000000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffffffff88e7aa1c
RBP: ffffffff88e07c80 R08: ffffffff88e7a180 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000060 R15: 0000000000000001
default_enter_idle+0x71/0xf0 drivers/cpuidle/cpuidle-haltpoll.c:27
cpuidle_enter_state+0xef/0xfb0 drivers/cpuidle/cpuidle.c:229
cpuidle_enter+0x4f/0xa0 drivers/cpuidle/cpuidle.c:344
call_cpuidle kernel/sched/idle.c:117 [inline]
cpuidle_idle_call kernel/sched/idle.c:201 [inline]
do_idle+0x45f/0x6e0 kernel/sched/idle.c:263
cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:354
rest_init+0x245/0x37b init/main.c:451
arch_call_rest_init+0xe/0x1b
start_kernel+0x904/0x943 init/main.c:784
x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:472
x86_64_start_kernel+0x77/0x7b arch/x86/kernel/head64.c:453
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241