INFO: rcu_preempt detected stalls on CPUs/tasks: 0-...: (1 GPs behind) idle=e62/1/0 softirq=11748/11750 fqs=5249 (detected by 1, t=10502 jiffies, g=1824, c=1823, q=1788) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.14.143 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffffffff87676240 task.stack: ffffffff87600000 RIP: 0010:__list_del_entry_valid+0xb3/0xf5 lib/list_debug.c:54 RSP: 0018:ffff8880aee07118 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffff8880823b0af8 RCX: 0000000000000000 RDX: 1ffff11010476173 RSI: ffff8880823b0b90 RDI: ffff8880823b0b98 RBP: ffff8880aee07130 R08: 0000000000000000 R09: ffffffff87676bf8 R10: ffffffff87676bd8 R11: ffffffff87676240 R12: ffff8880823b0b90 R13: ffff8880823b0b90 R14: ffff8880823b0af8 R15: ffff8880823b0b80 FS: 0000000000000000(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000001394458 CR3: 000000000766a000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry include/linux/list.h:117 [inline] list_move_tail include/linux/list.h:182 [inline] hhf_dequeue+0x57f/0xa60 net/sched/sch_hhf.c:438 dequeue_skb net/sched/sch_generic.c:148 [inline] qdisc_restart net/sched/sch_generic.c:241 [inline] __qdisc_run+0x2b8/0xe00 net/sched/sch_generic.c:257 __dev_xmit_skb net/core/dev.c:3235 [inline] __dev_queue_xmit+0x1571/0x25e0 net/core/dev.c:3493 dev_queue_xmit+0x18/0x20 net/core/dev.c:3558 br_dev_queue_push_xmit+0x367/0x530 net/bridge/br_forward.c:55 NF_HOOK include/linux/netfilter.h:250 [inline] NF_HOOK include/linux/netfilter.h:244 [inline] br_forward_finish+0xbc/0x320 net/bridge/br_forward.c:67 NF_HOOK include/linux/netfilter.h:250 [inline] NF_HOOK include/linux/netfilter.h:244 [inline] __br_forward+0x560/0x9c0 net/bridge/br_forward.c:111 deliver_clone+0x61/0xc0 net/bridge/br_forward.c:127 maybe_deliver net/bridge/br_forward.c:168 [inline] maybe_deliver net/bridge/br_forward.c:156 [inline] br_flood+0x3c8/0x530 net/bridge/br_forward.c:210 br_dev_xmit+0x9a4/0xd40 net/bridge/br_device.c:83 __netdev_start_xmit include/linux/netdevice.h:4033 [inline] netdev_start_xmit include/linux/netdevice.h:4042 [inline] xmit_one net/core/dev.c:3009 [inline] dev_hard_start_xmit+0x18c/0x8b0 net/core/dev.c:3025 __dev_queue_xmit+0x1d95/0x25e0 net/core/dev.c:3525 dev_queue_xmit+0x18/0x20 net/core/dev.c:3558 neigh_hh_output include/net/neighbour.h:490 [inline] neigh_output include/net/neighbour.h:498 [inline] ip6_finish_output2+0x10bd/0x21b0 net/ipv6/ip6_output.c:120 ip6_finish_output+0x4f4/0xb50 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:239 [inline] ip6_output+0x20f/0x6d0 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:462 [inline] NF_HOOK include/linux/netfilter.h:250 [inline] ndisc_send_skb+0xb56/0x11e0 net/ipv6/ndisc.c:483 ndisc_send_rs+0x129/0x680 net/ipv6/ndisc.c:677 addrconf_rs_timer+0x289/0x5a0 net/ipv6/addrconf.c:3757 call_timer_fn+0x161/0x670 kernel/time/timer.c:1279 expire_timers kernel/time/timer.c:1318 [inline] __run_timers kernel/time/timer.c:1634 [inline] __run_timers kernel/time/timer.c:1602 [inline] run_timer_softirq+0x5b4/0x1570 kernel/time/timer.c:1647 __do_softirq+0x244/0x9a0 kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x160/0x1b0 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:648 [inline] smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102 apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792 RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61 RSP: 0018:ffffffff87607de8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 RAX: 1ffffffff0ee2a84 RBX: ffffffff87676240 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffffffff87676abc RBP: ffffffff87607e10 R08: 1ffffffff104a601 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff87715410 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff87676240 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:557 default_idle_call+0x36/0x90 kernel/sched/idle.c:98 cpuidle_idle_call kernel/sched/idle.c:156 [inline] do_idle+0x262/0x3d0 kernel/sched/idle.c:246 cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:351 rest_init+0x1d9/0x1e2 init/main.c:435 start_kernel+0x6df/0x6fd init/main.c:709 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:381 x86_64_start_kernel+0x77/0x7b arch/x86/kernel/head64.c:362 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:240 Code: 00 75 53 49 8b 14 24 4c 39 f2 0f 85 99 00 00 00 49 8d 7d 08 48 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 INFO: rcu_sched detected stalls on CPUs/tasks: 0-...: (1 GPs behind) idle=e62/1/0 softirq=11742/11750 fqs=5247 (detected by 1, t=10502 jiffies, g=1163, c=1162, q=57) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.14.143 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffffffff87676240 task.stack: ffffffff87600000 RIP: 0010:__list_del_entry_valid+0xb1/0xf5 lib/list_debug.c:54 RSP: 0018:ffff8880aee07118 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffff8880823b0af8 RCX: 0000000000000000 RDX: 1ffff11010476173 RSI: ffff8880823b0b90 RDI: ffff8880823b0b98 RBP: ffff8880aee07130 R08: 0000000000000000 R09: ffffffff87676bf8 R10: ffffffff87676bd8 R11: ffffffff87676240 R12: ffff8880823b0b90 R13: ffff8880823b0b90 R14: ffff8880823b0af8 R15: ffff8880823b0b80 FS: 0000000000000000(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000001394458 CR3: 000000000766a000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry include/linux/list.h:117 [inline] list_move_tail include/linux/list.h:182 [inline] hhf_dequeue+0x57f/0xa60 net/sched/sch_hhf.c:438 dequeue_skb net/sched/sch_generic.c:148 [inline] qdisc_restart net/sched/sch_generic.c:241 [inline] __qdisc_run+0x2b8/0xe00 net/sched/sch_generic.c:257 __dev_xmit_skb net/core/dev.c:3235 [inline] __dev_queue_xmit+0x1571/0x25e0 net/core/dev.c:3493 dev_queue_xmit+0x18/0x20 net/core/dev.c:3558 br_dev_queue_push_xmit+0x367/0x530 net/bridge/br_forward.c:55 NF_HOOK include/linux/netfilter.h:250 [inline] NF_HOOK include/linux/netfilter.h:244 [inline] br_forward_finish+0xbc/0x320 net/bridge/br_forward.c:67 NF_HOOK include/linux/netfilter.h:250 [inline] NF_HOOK include/linux/netfilter.h:244 [inline] __br_forward+0x560/0x9c0 net/bridge/br_forward.c:111 deliver_clone+0x61/0xc0 net/bridge/br_forward.c:127 maybe_deliver net/bridge/br_forward.c:168 [inline] maybe_deliver net/bridge/br_forward.c:156 [inline] br_flood+0x3c8/0x530 net/bridge/br_forward.c:210 br_dev_xmit+0x9a4/0xd40 net/bridge/br_device.c:83 __netdev_start_xmit include/linux/netdevice.h:4033 [inline] netdev_start_xmit include/linux/netdevice.h:4042 [inline] xmit_one net/core/dev.c:3009 [inline] dev_hard_start_xmit+0x18c/0x8b0 net/core/dev.c:3025 __dev_queue_xmit+0x1d95/0x25e0 net/core/dev.c:3525 dev_queue_xmit+0x18/0x20 net/core/dev.c:3558 neigh_hh_output include/net/neighbour.h:490 [inline] neigh_output include/net/neighbour.h:498 [inline] ip6_finish_output2+0x10bd/0x21b0 net/ipv6/ip6_output.c:120 ip6_finish_output+0x4f4/0xb50 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:239 [inline] ip6_output+0x20f/0x6d0 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:462 [inline] NF_HOOK include/linux/netfilter.h:250 [inline] ndisc_send_skb+0xb56/0x11e0 net/ipv6/ndisc.c:483 ndisc_send_rs+0x129/0x680 net/ipv6/ndisc.c:677 addrconf_rs_timer+0x289/0x5a0 net/ipv6/addrconf.c:3757 call_timer_fn+0x161/0x670 kernel/time/timer.c:1279 expire_timers kernel/time/timer.c:1318 [inline] __run_timers kernel/time/timer.c:1634 [inline] __run_timers kernel/time/timer.c:1602 [inline] run_timer_softirq+0x5b4/0x1570 kernel/time/timer.c:1647 __do_softirq+0x244/0x9a0 kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x160/0x1b0 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:648 [inline] smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102 apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792 RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61 RSP: 0018:ffffffff87607de8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 RAX: 1ffffffff0ee2a84 RBX: ffffffff87676240 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffffffff87676abc RBP: ffffffff87607e10 R08: 1ffffffff104a601 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff87715410 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff87676240 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:557 default_idle_call+0x36/0x90 kernel/sched/idle.c:98 cpuidle_idle_call kernel/sched/idle.c:156 [inline] do_idle+0x262/0x3d0 kernel/sched/idle.c:246 cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:351 rest_init+0x1d9/0x1e2 init/main.c:435 start_kernel+0x6df/0x6fd init/main.c:709 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:381 x86_64_start_kernel+0x77/0x7b arch/x86/kernel/head64.c:362 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:240 Code: 3c 02 00 75 53 49 8b 14 24 4c 39 f2 0f 85 99 00 00 00 49 8d 7d 08 48 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