rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-...!: (1 GPs behind) idle=c92/0/0x3 softirq=9307/9308 fqs=21
(t=10500 jiffies g=6649 q=182)
rcu: rcu_preempt kthread starved for 10458 jiffies! g6649 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
rcu: RCU grace-period kthread stack dump:
rcu_preempt I28896 10 2 0x80004000
Call Trace:
context_switch kernel/sched/core.c:3254 [inline]
__schedule+0x877/0xc50 kernel/sched/core.c:3880
schedule+0x131/0x1e0 kernel/sched/core.c:3947
schedule_timeout+0x14f/0x240 kernel/time/timer.c:1807
rcu_gp_fqs_loop kernel/rcu/tree.c:1611 [inline]
rcu_gp_kthread+0xef8/0x1790 kernel/rcu/tree.c:1768
kthread+0x332/0x350 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-rc8+ #0
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+0x1d8/0x2f8 lib/dump_stack.c:113
nmi_cpu_backtrace+0xaf/0x1a0 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x174/0x290 lib/nmi_backtrace.c:62
arch_trigger_cpumask_backtrace+0x10/0x20 arch/x86/kernel/apic/hw_nmi.c:38
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_dump_cpu_stacks+0x15a/0x220 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:2736 [inline]
rcu_sched_clock_irq+0xb95/0x16d0 kernel/rcu/tree.c:2183
update_process_times+0x134/0x190 kernel/time/timer.c:1639
tick_sched_handle kernel/time/tick-sched.c:167 [inline]
tick_sched_timer+0x263/0x420 kernel/time/tick-sched.c:1296
__run_hrtimer kernel/time/hrtimer.c:1389 [inline]
__hrtimer_run_queues+0x403/0x850 kernel/time/hrtimer.c:1451
hrtimer_interrupt+0x38c/0xda0 kernel/time/hrtimer.c:1509
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1110 [inline]
smp_apic_timer_interrupt+0x109/0x280 arch/x86/kernel/apic/apic.c:1135
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830
RIP: 0010:__list_del include/linux/list.h:105 [inline]
RIP: 0010:__list_del_entry include/linux/list.h:134 [inline]
RIP: 0010:list_move_tail include/linux/list.h:213 [inline]
RIP: 0010:hhf_dequeue+0x4d8/0xaa0 net/sched/sch_hhf.c:439
Code: 08 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 bb 27 a0 fb 48 8b 1b 48 8d 7b 08 48 89 f8 48 c1 e8 03 42 80 3c 20 00 <74> 05 e8 41 28 a0 fb 4c 89 73 08 4c 89 f0 48 c1 e8 03 42 80 3c 20
RSP: 0018:ffff8880aea09478 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 1ffff11012f8b623 RBX: ffff888097c5b110 RCX: ffffffff88875a00
RDX: 0000000000000702 RSI: 0000000000000000 RDI: ffff888097c5b118
RBP: ffff8880aea09520 R08: ffffffff860c5d6a R09: 0000000000000000
R10: fffffbfff117be8d R11: 0000000000000000 R12: dffffc0000000000
R13: ffff888097c5ad80 R14: ffff888097c5b110 R15: ffff888097c5b100
dequeue_skb net/sched/sch_generic.c:258 [inline]
qdisc_restart net/sched/sch_generic.c:361 [inline]
__qdisc_run+0x217/0x1b30 net/sched/sch_generic.c:379
__dev_xmit_skb net/core/dev.c:3533 [inline]
__dev_queue_xmit+0x1161/0x3020 net/core/dev.c:3838
dev_queue_xmit+0x17/0x20 net/core/dev.c:3902
br_dev_queue_push_xmit+0x551/0x650 net/bridge/br_forward.c:52
NF_HOOK include/linux/netfilter.h:305 [inline]
br_forward_finish net/bridge/br_forward.c:65 [inline]
NF_HOOK include/linux/netfilter.h:305 [inline]
__br_forward+0x439/0x720 net/bridge/br_forward.c:109
deliver_clone net/bridge/br_forward.c:125 [inline]
maybe_deliver net/bridge/br_forward.c:181 [inline]
br_flood+0x52e/0x840 net/bridge/br_forward.c:223
br_dev_xmit+0xcb6/0x1100 net/bridge/br_device.c:96
__netdev_start_xmit include/linux/netdevice.h:4406 [inline]
netdev_start_xmit include/linux/netdevice.h:4420 [inline]
xmit_one net/core/dev.c:3280 [inline]
dev_hard_start_xmit+0x1c1/0x3f0 net/core/dev.c:3296
__dev_queue_xmit+0x1e86/0x3020 net/core/dev.c:3869
dev_queue_xmit+0x17/0x20 net/core/dev.c:3902
neigh_hh_output include/net/neighbour.h:500 [inline]
neigh_output include/net/neighbour.h:509 [inline]
ip_finish_output2+0x145c/0x18d0 net/ipv4/ip_output.c:228
__ip_finish_output+0x801/0xa70 net/ipv4/ip_output.c:308
ip_finish_output+0x52/0x1e0 net/ipv4/ip_output.c:318
NF_HOOK_COND include/linux/netfilter.h:294 [inline]
ip_output+0x1bc/0x280 net/ipv4/ip_output.c:432
dst_output include/net/dst.h:436 [inline]
ip_local_out+0x105/0x140 net/ipv4/ip_output.c:125
igmpv3_sendpack+0x15a/0x230 net/ipv4/igmp.c:426
igmpv3_send_cr net/ipv4/igmp.c:721 [inline]
igmp_ifc_timer_expire+0xb39/0xf60 net/ipv4/igmp.c:809
call_timer_fn+0x95/0x170 kernel/time/timer.c:1322
expire_timers kernel/time/timer.c:1366 [inline]
__run_timers+0x79e/0x970 kernel/time/timer.c:1685
run_timer_softirq+0x4a/0x90 kernel/time/timer.c:1698
__do_softirq+0x333/0x7c4 arch/x86/include/asm/paravirt.h:778
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x227/0x230 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:537 [inline]
smp_apic_timer_interrupt+0x113/0x280 arch/x86/kernel/apic/apic.c:1137
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: 30 fa eb ae 89 d9 80 e1 07 80 c1 03 38 c1 7c ba 48 89 df e8 74 a1 30 fa eb b0 90 90 e9 07 00 00 00 0f 00 2d 96 a0 46 00 fb f4 90 e9 07 00 00 00 0f 00 2d 86 a0 46 00 f4 c3 90 90 55 48 89 e5
RSP: 0018:ffffffff88807dc0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff11150f3 RBX: ffffffff88875a00 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: ffffffff812b7a1a RDI: ffffffff877be46a
RBP: ffffffff88807dc8 R08: ffffffff81790e74 R09: fffffbfff110eb41
R10: fffffbfff110eb41 R11: 0000000000000000 R12: dffffc0000000000
R13: 1ffffffff110eb40 R14: dffffc0000000000 R15: 0000000000000000
arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:571
default_idle_call+0x59/0xa0 kernel/sched/idle.c:94
cpuidle_idle_call kernel/sched/idle.c:154 [inline]
do_idle+0x140/0x6d0 kernel/sched/idle.c:263
cpu_startup_entry+0x25/0x30 kernel/sched/idle.c:354
rest_init+0x29d/0x2b0 init/main.c:451
arch_call_rest_init+0xe/0x10
start_kernel+0x6f5/0x7f6 init/main.c:785
x86_64_start_reservations+0x18/0x2e arch/x86/kernel/head64.c:472
x86_64_start_kernel+0x7a/0x7d arch/x86/kernel/head64.c:453
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:241