======================================
| [ 1907.504971][T17937] br1: entered promiscuous mode
| [ 1914.210380][    C1] ------------[ cut here ]------------
| [ 1914.210962][ C1] WARNING: CPU: 1 PID: 0 at ./include/linux/skbuff.h:1164 icmp_route_lookup.constprop.0 (./include/linux/skbuff.h:1164 ./include/linux/skbuff.h:1178 net/ipv4/icmp.c:548) 
| [ 1914.211662][    C1] Modules linked in: macvlan vxlan ip6_udp_tunnel udp_tunnel bridge stp llc act_gact cls_flower sch_ingress ip_gre gre 8021q vrf veth
[ 1914.213187][    C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1914.213609][ C1] RIP: 0010:icmp_route_lookup.constprop.0 (./include/linux/skbuff.h:1164 ./include/linux/skbuff.h:1178 net/ipv4/icmp.c:548) 
[ 1914.214029][ C1] Code: c1 ea 03 80 3c 02 00 0f 85 2c 05 00 00 48 8b 45 58 48 89 44 24 08 a8 01 0f 85 35 02 00 00 48 f7 44 24 08 fe ff ff ff 74 04 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 4c 89 da 48 c1 ea 03 80 3c
All code
========
   0:	c1 ea 03             	shr    $0x3,%edx
   3:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   7:	0f 85 2c 05 00 00    	jne    0x539
   d:	48 8b 45 58          	mov    0x58(%rbp),%rax
  11:	48 89 44 24 08       	mov    %rax,0x8(%rsp)
  16:	a8 01                	test   $0x1,%al
  18:	0f 85 35 02 00 00    	jne    0x253
  1e:	48 f7 44 24 08 fe ff 	testq  $0xfffffffffffffffe,0x8(%rsp)
  25:	ff ff 
  27:	74 04                	je     0x2d
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	4c 89 da             	mov    %r11,%rdx
  3a:	48 c1 ea 03          	shr    $0x3,%rdx
  3e:	80                   	.byte 0x80
  3f:	3c                   	.byte 0x3c

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	4c 89 da             	mov    %r11,%rdx
  10:	48 c1 ea 03          	shr    $0x3,%rdx
  14:	80                   	.byte 0x80
  15:	3c                   	.byte 0x3c
[ 1914.215211][    C1] RSP: 0018:ffffc900001c0768 EFLAGS: 00010282
[ 1914.215631][    C1] RAX: ffff888011d2d240 RBX: 1ffff920000380f1 RCX: 0000000000000002
[ 1914.216141][    C1] RDX: 1ffff11001350a0b RSI: ffffffffb9a9e3c3 RDI: ffffc900001c081a
[ 1914.216983][    C1] RBP: ffff888009a85000 R08: 0000000000000001 R09: ffff888011d2d3c0
[ 1914.217486][    C1] R10: ffffffffbaa050d7 R11: ffff888009a85058 R12: ffffffffbc9e5b00
[ 1914.217971][    C1] R13: ffffc900001c0a18 R14: ffff888011d2cdc0 R15: ffffc900001c07a8
[ 1914.218493][    C1] FS:  0000000000000000(0000) GS:ffff888073931000(0000) knlGS:0000000000000000
[ 1914.219071][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1914.219487][    C1] CR2: 00007f770fd0b000 CR3: 000000003b136005 CR4: 0000000000772ef0
[ 1914.219983][    C1] PKRU: 55555554
[ 1914.220236][    C1] Call Trace:
[ 1914.220485][    C1]  <IRQ>
[ 1914.220662][ C1] ? debug_object_activate (lib/debugobjects.c:837) 
[ 1914.220994][ C1] ? __pfx_icmp_route_lookup.constprop.0 (net/ipv4/icmp.c:480) 
[ 1914.221423][ C1] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 1914.221750][ C1] ? __ip_options_echo (net/ipv4/ip_options.c:86) 
[ 1914.222086][ C1] ? __icmp_send (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/ipv4/icmp.c:718) 
[ 1914.222409][ C1] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 1914.222738][ C1] __icmp_send (net/ipv4/icmp.c:746) 
[ 1914.223088][ C1] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 1914.223496][ C1] ? __pfx___icmp_send (net/ipv4/icmp.c:596) 
[ 1914.223822][ C1] ? __pfx_debug_object_activate (lib/debugobjects.c:805) 
[ 1914.224235][ C1] ? get_nohz_timer_target (kernel/sched/core.c:1210) 
[ 1914.224568][ C1] ? switch_hrtimer_base (kernel/time/hrtimer.c:232 kernel/time/hrtimer.c:258) 
[ 1914.224910][ C1] ? start_dl_timer (kernel/sched/deadline.c:1193) 
[ 1914.225258][ C1] ipv4_send_dest_unreach (net/ipv4/route.c:1249) 
[ 1914.225592][ C1] ? __pfx_ipv4_send_dest_unreach (net/ipv4/route.c:1223) 
[ 1914.225997][ C1] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 1914.226338][ C1] ipv4_link_failure (./include/linux/skbuff.h:1156 ./include/net/route.h:88 net/ipv4/route.c:1258) 
[ 1914.226664][ C1] arp_error_report (./include/net/dst.h:429 net/ipv4/arp.c:296) 
[ 1914.226993][ C1] neigh_invalidate (net/core/neighbour.c:1049) 
[ 1914.227336][ C1] neigh_timer_handler (net/core/neighbour.c:1155 (discriminator 2)) 
[ 1914.227662][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1914.227995][ C1] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1072) 
[ 1914.228339][ C1] call_timer_fn (kernel/time/timer.c:1747) 
[ 1914.228663][ C1] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1737) 
[ 1914.228985][ C1] ? call_timer_fn (./include/linux/lockdep.h:31 kernel/time/timer.c:1737) 
[ 1914.229320][ C1] ? __pfx_call_timer_fn (kernel/time/timer.c:1724) 
[ 1914.229647][ C1] ? __run_timers (kernel/time/timer.c:1798 kernel/time/timer.c:2372) 
[ 1914.229970][ C1] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 1914.230303][ C1] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1914.230642][ C1] __run_timers (kernel/time/timer.c:1799 kernel/time/timer.c:2372) 
[ 1914.230967][ C1] ? __pfx_neigh_timer_handler (net/core/neighbour.c:1072) 
[ 1914.231305][ C1] ? __pfx___run_timers (kernel/time/timer.c:2343) 
[ 1914.231640][ 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) 
[ 1914.231968][ C1] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 1914.232303][ C1] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 1914.232630][ C1] ? run_timer_base (kernel/time/timer.c:2384 kernel/time/timer.c:2376 kernel/time/timer.c:2393) 
[ 1914.232990][ C1] run_timer_base (kernel/time/timer.c:2385 kernel/time/timer.c:2376 kernel/time/timer.c:2393) 
[ 1914.233333][ C1] run_timer_softirq (kernel/time/timer.c:2404) 
[ 1914.233656][ C1] handle_softirqs (kernel/softirq.c:579) 
[ 1914.233989][ C1] __irq_exit_rcu (kernel/softirq.c:614 kernel/softirq.c:453 kernel/softirq.c:680) 
[ 1914.234321][ C1] irq_exit_rcu (kernel/softirq.c:698) 
[ 1914.234564][ C1] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1050 arch/x86/kernel/apic/apic.c:1050) 
[ 1914.234887][    C1]  </IRQ>
[ 1914.235067][    C1]  <TASK>
[ 1914.235232][ C1] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) 
[ 1914.235639][ C1] RIP: 0010:pv_native_safe_halt (arch/x86/kernel/paravirt.c:82) 
[ 1914.235975][ C1] Code: 74 cf 00 e9 43 59 02 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 23 bf 27 00 fb f4 <c3> cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
All code
========
   0:	74 cf                	je     0xffffffffffffffd1
   2:	00 e9                	add    %ch,%cl
   4:	43 59                	rex.XB pop %r9
   6:	02 00                	add    (%rax),%al
   8:	0f 1f 00             	nopl   (%rax)
   b:	90                   	nop
   c:	90                   	nop
   d:	90                   	nop
   e:	90                   	nop
   f:	90                   	nop
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	66 90                	xchg   %ax,%ax
  21:	0f 00 2d 23 bf 27 00 	verw   0x27bf23(%rip)        # 0x27bf4b
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00 
  39:	66 90                	xchg   %ax,%ax
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	cc                   	int3
   2:	cc                   	int3
   3:	cc                   	int3
   4:	cc                   	int3
   5:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   c:	00 00 00 
   f:	66 90                	xchg   %ax,%ax
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
[ 1914.237140][    C1] RSP: 0018:ffffc90000137de8 EFLAGS: 00000242
[ 1914.237552][    C1] RAX: 0000000004b821b3 RBX: 1ffff92000026fc1 RCX: ffffffffb8e193f9
[ 1914.238053][    C1] RDX: 0000000000000000 RSI: ffffffffb9ab4dd5 RDI: ffffffffb9256320
[ 1914.238551][    C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005e56702
[ 1914.239045][    C1] R10: ffff88802f2b3813 R11: ffffffffb9c11288 R12: 0000000000000000
[ 1914.239535][    C1] R13: ffff888001bf0040 R14: dffffc0000000000 R15: 0000000000000000
[ 1914.240057][ C1] ? ct_kernel_exit.constprop.0 (kernel/context_tracking.c:146) 
[ 1914.240473][ C1] default_idle (./arch/x86/include/asm/paravirt.h:107 arch/x86/kernel/process.c:749) 
[ 1914.240720][ C1] default_idle_call (./include/linux/cpuidle.h:143 kernel/sched/idle.c:118) 
[ 1914.241053][ C1] cpuidle_idle_call (kernel/sched/idle.c:186) 
[ 1914.241383][ C1] ? __pfx_cpuidle_idle_call (kernel/sched/idle.c:168) 
[ 1914.241709][ C1] ? tsc_verify_tsc_adjust (arch/x86/kernel/tsc_sync.c:60) 
[ 1914.242051][ C1] do_idle (kernel/sched/idle.c:325) 
[ 1914.242307][ C1] cpu_startup_entry (kernel/sched/idle.c:422 (discriminator 1)) 
[ 1914.242633][ C1] start_secondary (arch/x86/kernel/smpboot.c:203 arch/x86/kernel/smpboot.c:283) 
[ 1914.242962][ C1] ? __pfx_start_secondary (arch/x86/kernel/smpboot.c:233) 


Finger prints:
__icmp_send:ipv4_send_dest_unreach:ipv4_link_failure:arp_error_report:neigh_invalidate