INFO: rcu_preempt self-detected stall on CPU
	0-...: (1 GPs behind) idle=d12/140000000000002/0 softirq=145580/145585 fqs=4913 
	 (t=10500 jiffies g=44999 c=44998 q=12336)
NMI backtrace for cpu 0
CPU: 0 PID: 7173 Comm: udevd Not tainted 4.14.142 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x138/0x197 lib/dump_stack.c:53
 nmi_cpu_backtrace.cold+0x57/0x94 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x141/0x189 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:158 [inline]
 rcu_dump_cpu_stacks+0x186/0x1d2 kernel/rcu/tree.c:1396
 print_cpu_stall kernel/rcu/tree.c:1542 [inline]
 check_cpu_stall kernel/rcu/tree.c:1610 [inline]
 __rcu_pending kernel/rcu/tree.c:3390 [inline]
 rcu_pending kernel/rcu/tree.c:3452 [inline]
 rcu_check_callbacks.cold+0x43d/0xd0a kernel/rcu/tree.c:2792
 update_process_times+0x31/0x70 kernel/time/timer.c:1588
 tick_sched_handle+0x85/0x160 kernel/time/tick-sched.c:161
 tick_sched_timer+0x43/0x130 kernel/time/tick-sched.c:1219
 __run_hrtimer kernel/time/hrtimer.c:1220 [inline]
 __hrtimer_run_queues+0x270/0xbc0 kernel/time/hrtimer.c:1284
 hrtimer_interrupt+0x1d8/0x5d0 kernel/time/hrtimer.c:1318
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
 smp_apic_timer_interrupt+0x11c/0x5e0 arch/x86/kernel/apic/apic.c:1100
 apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
RIP: 0010:__list_del_entry_valid+0xb3/0xf5 lib/list_debug.c:54
RSP: 0018:ffff8880aee075c8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: dffffc0000000000 RBX: ffff888056c0fcf8 RCX: 0000000000000000
RDX: 1ffff1100ad81fb3 RSI: ffff888056c0fd90 RDI: ffff888056c0fd98
RBP: ffff8880aee075e0 R08: 0000000000000000 R09: ffff888069081020
R10: ffff888069081000 R11: ffff888069080640 R12: ffff888056c0fd90
R13: ffff888056c0fd90 R14: ffff888056c0fcf8 R15: ffff888056c0fd80
 __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
 neigh_resolve_output net/core/neighbour.c:1364 [inline]
 neigh_resolve_output+0x4d8/0x870 net/core/neighbour.c:1344
 neigh_output include/net/neighbour.h:500 [inline]
 ip6_finish_output2+0x9ab/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
 </IRQ>
RIP: 0010:memcmp+0x39/0xc0 lib/string.c:861
RSP: 0018:ffff88806908f860 EFLAGS: 00000212 ORIG_RAX: ffffffffffffff10
RAX: ffff88806908f90e RBX: ffff88806908f90e RCX: 0000000000000005
RDX: 00000000000000ff RSI: ffff88809a5f2b6e RDI: ffff88806908f908
RBP: ffff88806908f888 R08: 00000000d1e53faf R09: 0000000000000003
R10: 0000000000000000 R11: ffff888069080640 R12: dffffc0000000000
R13: ffff88806908f958 R14: 000000000000000a R15: ffff88809a5f2b50
 find_stack lib/stackdepot.c:176 [inline]
 depot_save_stack+0x11c/0x410 lib/stackdepot.c:225
 save_stack+0xa9/0xd0 mm/kasan/kasan.c:453
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc mm/kasan/kasan.c:551 [inline]
 kasan_kmalloc+0xce/0xf0 mm/kasan/kasan.c:529
 kasan_slab_alloc+0xf/0x20 mm/kasan/kasan.c:489
 kmem_cache_alloc+0x12e/0x780 mm/slab.c:3552
 dup_mmap kernel/fork.c:652 [inline]
 dup_mm kernel/fork.c:1208 [inline]
 copy_mm kernel/fork.c:1263 [inline]
 copy_process.part.0+0x444f/0x6a00 kernel/fork.c:1780
 copy_process kernel/fork.c:1595 [inline]
 _do_fork+0x19e/0xce0 kernel/fork.c:2085
 SYSC_clone kernel/fork.c:2195 [inline]
 SyS_clone+0x37/0x50 kernel/fork.c:2189
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7f16c5f9ff46
RSP: 002b:00007ffc004a37c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffc004a37c0 RCX: 00007f16c5f9ff46
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffc004a3820 R08: 0000000000001c05 R09: 0000000000001c05
R10: 00007f16c68bca70 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc004a37e0 R14: 0000000000000005 R15: 0000000000000005
INFO: rcu_sched detected stalls on CPUs/tasks:
	0-...: (10502 ticks this GP) idle=d12/140000000000001/0 softirq=145585/145585 fqs=0 
	(detected by 1, t=10563 jiffies, g=35896, c=35895, q=706)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 7173 Comm: udevd Not tainted 4.14.142 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888069080640 task.stack: ffff888069088000
RIP: 0010:__write_once_size include/linux/compiler.h:210 [inline]
RIP: 0010:__list_add include/linux/list.h:66 [inline]
RIP: 0010:list_add_tail include/linux/list.h:93 [inline]
RIP: 0010:list_move_tail include/linux/list.h:183 [inline]
RIP: 0010:hhf_dequeue+0x4a6/0xa60 net/sched/sch_hhf.c:451
RSP: 0018:ffff8880aee075f0 EFLAGS: 00000246
RAX: 1ffff1100ad81fb2 RBX: ffff888056c0fcf8 RCX: 0000000000000000
RDX: 0000000000000100 RSI: ffff888056c0fd90 RDI: ffff888056c0fd00
RBP: ffff8880aee07640 R08: 0000000000000000 R09: ffff888069081020
R10: ffff888069081000 R11: ffff888069080640 R12: dffffc0000000000
R13: ffff888056c0fb00 R14: ffff888056c0fd90 R15: ffff888056c0fd80
FS:  00007f16c68bc7a0(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f16c68c2000 CR3: 0000000093cab000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 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
 neigh_resolve_output net/core/neighbour.c:1364 [inline]
 neigh_resolve_output+0x4d8/0x870 net/core/neighbour.c:1344
 neigh_output include/net/neighbour.h:500 [inline]
 ip6_finish_output2+0x9ab/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
 </IRQ>
RIP: 0010:memcmp+0x39/0xc0 lib/string.c:861
RSP: 0018:ffff88806908f860 EFLAGS: 00000212 ORIG_RAX: ffffffffffffff10
RAX: ffff88806908f90e RBX: ffff88806908f90e RCX: 0000000000000005
RDX: 00000000000000ff RSI: ffff88809a5f2b6e RDI: ffff88806908f908
RBP: ffff88806908f888 R08: 00000000d1e53faf R09: 0000000000000003
R10: 0000000000000000 R11: ffff888069080640 R12: dffffc0000000000
R13: ffff88806908f958 R14: 000000000000000a R15: ffff88809a5f2b50
 find_stack lib/stackdepot.c:176 [inline]
 depot_save_stack+0x11c/0x410 lib/stackdepot.c:225
 save_stack+0xa9/0xd0 mm/kasan/kasan.c:453
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc mm/kasan/kasan.c:551 [inline]
 kasan_kmalloc+0xce/0xf0 mm/kasan/kasan.c:529
 kasan_slab_alloc+0xf/0x20 mm/kasan/kasan.c:489
 kmem_cache_alloc+0x12e/0x780 mm/slab.c:3552
 dup_mmap kernel/fork.c:652 [inline]
 dup_mm kernel/fork.c:1208 [inline]
 copy_mm kernel/fork.c:1263 [inline]
 copy_process.part.0+0x444f/0x6a00 kernel/fork.c:1780
 copy_process kernel/fork.c:1595 [inline]
 _do_fork+0x19e/0xce0 kernel/fork.c:2085
 SYSC_clone kernel/fork.c:2195 [inline]
 SyS_clone+0x37/0x50 kernel/fork.c:2189
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7f16c5f9ff46
RSP: 002b:00007ffc004a37c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffc004a37c0 RCX: 00007f16c5f9ff46
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffc004a3820 R08: 0000000000001c05 R09: 0000000000001c05
R10: 00007f16c68bca70 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc004a37e0 R14: 0000000000000005 R15: 0000000000000005
Code: 48 89 03 48 89 f8 48 c1 e8 03 42 80 3c 20 00 0f 85 a9 04 00 00 4c 89 f0 4c 89 73 08 48 c1 e8 03 42 80 3c 20 00 0f 85 4d 04 00 00 <49> 89 1e e9 9d fb ff ff e8 8d 51 6d fc 48 8b 45 c0 4c 8b 75 d0 
rcu_sched kthread starved for 10564 jiffies! g35896 c35895 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x402 ->cpu=0
rcu_sched       I29776     9      2 0x80000000
Call Trace:
 context_switch kernel/sched/core.c:2807 [inline]
 __schedule+0x7b8/0x1cd0 kernel/sched/core.c:3383
 schedule+0x92/0x1c0 kernel/sched/core.c:3427
 schedule_timeout+0x43e/0xe10 kernel/time/timer.c:1744
 rcu_gp_kthread+0xbf4/0x1ec0 kernel/rcu/tree.c:2255
 kthread+0x319/0x430 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404