======================================
| [   23.503218][    C1] 1 lock held by ip/388:
| [ 23.503369][ C1] #0: ffffc900001e0d60 ((&n->timer)){+.-.}-{0:0}, at: call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
| [   23.503732][    C1]
| [   23.503732][    C1] stack backtrace:
[   23.503989][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   23.503992][    C1] Call Trace:
[   23.503995][    C1]  <IRQ>
[ 23.503998][ C1] dump_stack_lvl (lib/dump_stack.c:123) 
[ 23.504007][ C1] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6848) 
[ 23.504018][ C1] __icmp_send (./include/net/net_namespace.h:404 ./include/linux/netdevice.h:2669 net/ipv4/icmp.c:616) 
[ 23.504026][ C1] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 23.504033][ C1] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 23.504038][ C1] ? __pfx___icmp_send (net/ipv4/icmp.c:596) 
[ 23.504040][ C1] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 23.504047][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 23.504058][ C1] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 23.504063][ C1] ? validate_chain (kernel/locking/lockdep.c:3799 kernel/locking/lockdep.c:3819 kernel/locking/lockdep.c:3874) 
[ 23.504075][ C1] ? __pfx_validate_chain (kernel/locking/lockdep.c:3862) 
[ 23.504079][ C1] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:230) 
[ 23.504082][ C1] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 23.504091][ C1] ? __lock_acquire (kernel/locking/lockdep.c:5228) 
[ 23.504100][ C1] ipv4_send_dest_unreach (net/ipv4/route.c:1241) 
[ 23.504106][ C1] ? neigh_invalidate (net/core/neighbour.c:1008) 
[ 23.504112][ C1] ? __pfx_ipv4_send_dest_unreach (net/ipv4/route.c:1215) 
[ 23.504125][ C1] ipv4_link_failure (./include/linux/skbuff.h:1152 ./include/net/route.h:88 net/ipv4/route.c:1250) 
[ 23.504130][ C1] arp_error_report (./include/net/dst.h:429 net/ipv4/arp.c:296) 
[ 23.504136][ C1] neigh_invalidate (net/core/neighbour.c:1008) 
[ 23.504145][ C1] neigh_timer_handler (net/core/neighbour.c:1109 (discriminator 2)) 
[ 23.504155][ C1] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1032) 
[ 23.504158][ C1] call_timer_fn (kernel/time/timer.c:1789) 
[ 23.504162][ C1] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 23.504164][ C1] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1779) 
[ 23.504168][ C1] ? __pfx_call_timer_fn (kernel/time/timer.c:1766) 
[ 23.504171][ C1] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 23.504188][ C1] __run_timers (kernel/time/timer.c:1841 kernel/time/timer.c:2414) 
[ 23.504191][ C1] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1032) 
[ 23.504202][ C1] ? __pfx___run_timers (kernel/time/timer.c:2385) 
[ 23.504210][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 23.504215][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 23.504220][ C1] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 23.504222][ C1] ? run_timer_softirq (kernel/time/timer.c:2426 kernel/time/timer.c:2418 kernel/time/timer.c:2435 kernel/time/timer.c:2445) 
[ 23.504232][ C1] run_timer_softirq (kernel/time/timer.c:2427 kernel/time/timer.c:2418 kernel/time/timer.c:2435 kernel/time/timer.c:2445) 
[ 23.504238][ C1] handle_softirqs (kernel/softirq.c:561) 
[ 23.504246][ C1] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 23.504254][ C1] __irq_exit_rcu (kernel/softirq.c:596 kernel/softirq.c:435 kernel/softirq.c:662) 
[ 23.504257][ C1] irq_exit_rcu (kernel/softirq.c:680) 
[ 23.504260][ C1] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1049 arch/x86/kernel/apic/apic.c:1049) 
[   23.504265][    C1]  </IRQ>
[   23.504266][    C1]  <TASK>
[ 23.504269][ C1] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 23.504274][ C1] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 23.504279][ C1] Code: 10 e8 81 74 88 fd 48 89 ef e8 c9 e4 88 fd 81 e3 00 02 00 00 75 1d 9c 58 f6 c4 02 75 29 48 85 db 74 01 fb 65 ff 0d 75 7d 10 48 <74> 0e 5b 5d c3 cc cc cc cc e8 8f 03 ae fd eb dc 0f 1f 44 00 00 5b
All code
========
   0:	10 e8                	adc    %ch,%al
   2:	81 74 88 fd 48 89 ef 	xorl   $0xe8ef8948,-0x3(%rax,%rcx,4)
   9:	e8 
   a:	c9                   	leave
   b:	e4 88                	in     $0x88,%al
   d:	fd                   	std
   e:	81 e3 00 02 00 00    	and    $0x200,%ebx
  14:	75 1d                	jne    0x33
  16:	9c                   	pushf
  17:	58                   	pop    %rax
  18:	f6 c4 02             	test   $0x2,%ah
  1b:	75 29                	jne    0x46
  1d:	48 85 db             	test   %rbx,%rbx
  20:	74 01                	je     0x23
  22:	fb                   	sti
  23:	65 ff 0d 75 7d 10 48 	decl   %gs:0x48107d75(%rip)        # 0x48107d9f
  2a:*	74 0e                	je     0x3a		<-- trapping instruction
  2c:	5b                   	pop    %rbx
  2d:	5d                   	pop    %rbp
  2e:	c3                   	ret
  2f:	cc                   	int3
  30:	cc                   	int3
  31:	cc                   	int3
  32:	cc                   	int3
  33:	e8 8f 03 ae fd       	call   0xfffffffffdae03c7
  38:	eb dc                	jmp    0x16
  3a:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  3f:	5b                   	pop    %rbx

Code starting with the faulting instruction
===========================================
   0:	74 0e                	je     0x10
   2:	5b                   	pop    %rbx
   3:	5d                   	pop    %rbp
   4:	c3                   	ret
   5:	cc                   	int3
   6:	cc                   	int3
   7:	cc                   	int3
   8:	cc                   	int3
   9:	e8 8f 03 ae fd       	call   0xfffffffffdae039d
   e:	eb dc                	jmp    0xffffffffffffffec
  10:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  15:	5b                   	pop    %rbx
[   23.504282][    C1] RSP: 0018:ffffc900008d7ab0 EFLAGS: 00000282
[   23.504285][    C1] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff7331991
[   23.504287][    C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb7f34761
[   23.504289][    C1] RBP: ffff88800104f440 R08: 0000000000000001 R09: 0000000000000001
[   23.504290][    C1] R10: ffffffffb9991197 R11: ffff888005128040 R12: ffff88800104f440
[   23.504292][    C1] R13: ffffea000028b000 R14: ffff88800104de40 R15: ffff88800a2c0008
[ 23.504303][ C1] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 23.504311][ C1] get_partial_node.part.0 (mm/slub.c:2870) 
[ 23.504324][ C1] ? __alloc_object (mm/kmemleak.c:471 mm/kmemleak.c:651) 
[ 23.504331][ C1] ___slab_alloc (mm/slub.c:2831 mm/slub.c:2948 mm/slub.c:3806) 
[ 23.504335][ C1] ? __alloc_object (mm/kmemleak.c:471 mm/kmemleak.c:651) 
[ 23.504339][ C1] ? kmem_cache_free (mm/slub.c:2283 mm/slub.c:4609 mm/slub.c:4711) 
[ 23.504343][ C1] ? ___slab_alloc (mm/slub.c:3658) 
[ 23.504349][ C1] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 23.504354][ C1] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 23.504366][ C1] ? __alloc_object (mm/kmemleak.c:471 mm/kmemleak.c:651) 
[ 23.504370][ C1] ? kmem_cache_alloc_noprof (mm/slub.c:3916 mm/slub.c:3991 mm/slub.c:4152 mm/slub.c:4171) 
[ 23.504373][ C1] kmem_cache_alloc_noprof (mm/slub.c:3916 mm/slub.c:3991 mm/slub.c:4152 mm/slub.c:4171) 
[ 23.504383][ C1] __alloc_object (mm/kmemleak.c:471 mm/kmemleak.c:651) 
[ 23.504388][ C1] __create_object (mm/kmemleak.c:760) 
[ 23.504395][ C1] __kmalloc_cache_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4119 mm/slub.c:4164 mm/slub.c:4320) 
[ 23.504406][ C1] kmem_cache_free (mm/slub.c:2306 mm/slub.c:4609 mm/slub.c:4711) 
[ 23.504410][ C1] ? task_work_run (kernel/task_work.c:227 (discriminator 1)) 
[ 23.504422][ C1] task_work_run (kernel/task_work.c:227 (discriminator 1)) 
[ 23.504429][ C1] ? __pfx_task_work_run (kernel/task_work.c:195) 
[ 23.504432][ C1] ? switch_task_namespaces (kernel/nsproxy.c:250) 
[ 23.504439][ C1] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 23.504449][ C1] do_exit (kernel/exit.c:939) 
[ 23.504454][ C1] ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116) 
[ 23.504459][ C1] ? __pfx_do_exit (kernel/exit.c:877) 
[ 23.504462][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 23.504474][ C1] do_group_exit (kernel/exit.c:1068) 
[ 23.504480][ C1] __x64_sys_exit_group (kernel/exit.c:1096) 
[ 23.504484][ C1] x64_sys_call (arch/x86/entry/syscall_64.c:32) 
[ 23.504488][ C1] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 23.504494][ C1] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.504497][    C1] RIP: 0033:0x7f154cd5eabd
[ 23.504501][ C1] Code: Unable to access opcode bytes at 0x7f154cd5ea93.

Code starting with the faulting instruction
===========================================
[   23.504502][    C1] RSP: 002b:00007ffd5da33f18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   23.504505][    C1] RAX: ffffffffffffffda RBX: 00007f154ce3b9c0 RCX: 00007f154cd5eabd
[   23.504506][    C1] RDX: 00000000000000e7 RSI: fffffffffffffe90 RDI: 0000000000000000
[   23.504508][    C1] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000060
[   23.504509][    C1] R10: 00007f154cc4bfa8 R11: 0000000000000246 R12: 00007f154ce3b9c0


Finger prints:
lockdep_rcu_suspicious:__icmp_send:ipv4_send_dest_unreach:ipv4_link_failure:arp_error_report