======================================
| [   22.862915][   T38] br0: port 2(eth1) entered forwarding state
| [   28.159947][    C3] ------------[ cut here ]------------
| [ 28.160477][ C3] WARNING: CPU: 3 PID: 362 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) 
| [   28.161175][    C3] Modules linked in:
[   28.162084][    C3] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 28.162502][ C3] RIP: 0010:icmp_route_lookup.constprop.0 (./include/linux/skbuff.h:1164 ./include/linux/skbuff.h:1178 net/ipv4/icmp.c:548) 
[ 28.162934][ C3] Code: ea 03 80 3c 02 00 0f 85 4f 05 00 00 49 8b 44 24 58 48 89 44 24 08 a8 01 0f 85 39 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:	ea                   	(bad)
   1:	03 80 3c 02 00 0f    	add    0xf00023c(%rax),%eax
   7:	85 4f 05             	test   %ecx,0x5(%rdi)
   a:	00 00                	add    %al,(%rax)
   c:	49 8b 44 24 58       	mov    0x58(%r12),%rax
  11:	48 89 44 24 08       	mov    %rax,0x8(%rsp)
  16:	a8 01                	test   $0x1,%al
  18:	0f 85 39 02 00 00    	jne    0x257
  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
[   28.164132][    C3] RSP: 0018:ffffc900002705e8 EFLAGS: 00010282
[   28.164566][    C3] RAX: ffff88800eb28040 RBX: 1ffff9200004e0c1 RCX: 0000000000000002
[   28.165063][    C3] RDX: 1ffff1100211b2b3 RSI: ffffffffa13123fb RDI: ffffc9000027069a
[   28.165568][    C3] RBP: ffff888005f13940 R08: 0000000000000001 R09: ffff88800eb290c0
[   28.166058][    C3] R10: ffffe8ffffd8c1c7 R11: ffff8880108d9598 R12: ffff8880108d9540
[   28.166561][    C3] R13: ffffc90000270898 R14: ffff88800eb29240 R15: ffffc90000270628
[   28.167061][    C3] FS:  00007f62e6f68300(0000) GS:ffff8880c9712000(0000) knlGS:0000000000000000
[   28.167647][    C3] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   28.168363][    C3] CR2: 0000564fd8ea70a8 CR3: 000000000d212005 CR4: 0000000000772ef0
[   28.168866][    C3] PKRU: 55555554
[   28.169118][    C3] Call Trace:
[   28.169378][    C3]  <IRQ>
[ 28.169554][ C3] ? __pfx_icmp_route_lookup.constprop.0 (net/ipv4/icmp.c:480) 
[ 28.169981][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 28.170335][ C3] ? __ip_options_echo (net/ipv4/ip_options.c:86) 
[ 28.170680][ C3] ? __icmp_send (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/ipv4/icmp.c:718) 
[ 28.171009][ C3] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 28.171349][ C3] __icmp_send (net/ipv4/icmp.c:746) 
[ 28.171697][ C3] ? __pfx___icmp_send (net/ipv4/icmp.c:596) 
[ 28.172034][ C3] ? fib_lookup.constprop.0 (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/ip_fib.h:403) 
[ 28.172376][ C3] ? ip_route_input_slow (net/ipv4/route.c:2177 net/ipv4/route.c:2385) 
[ 28.172708][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 28.173046][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 28.173395][ C3] ip_rt_send_redirect (net/ipv4/route.c:920) 
[ 28.173727][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 28.174056][ C3] ? __pfx_ip_rt_send_redirect (net/ipv4/route.c:868) 
[ 28.174394][ C3] ? ip_dst_mtu_maybe_forward.constprop.0 (./include/linux/rcupdate.h:873 ./include/net/ip.h:501) 
[ 28.174799][ C3] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 28.175131][ C3] ? ip_forward (net/ipv4/ip_forward.c:157) 
[ 28.175465][ C3] ip_forward (net/ipv4/ip_forward.c:157) 
[ 28.175792][ C3] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 28.176126][ C3] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 28.176460][ C3] ip_rcv (./include/net/dst.h:471 ./include/net/dst.h:469 net/ipv4/ip_input.c:454 ./include/linux/netfilter.h:317 ./include/linux/netfilter.h:311 net/ipv4/ip_input.c:574) 
[ 28.176712][ C3] ? __pfx_ip_rcv (net/ipv4/ip_input.c:567) 
[ 28.177039][ C3] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 28.177374][ C3] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 28.177709][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 28.178043][ C3] ? __pfx_ip_rcv (net/ipv4/ip_input.c:567) 
[ 28.178374][ C3] ? process_backlog (./include/linux/local_lock_internal.h:54 net/core/dev.c:6442) 
[ 28.178713][ C3] __netif_receive_skb_one_core (net/core/dev.c:5979 (discriminator 4)) 
[ 28.179120][ C3] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5972) 
[ 28.179535][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 28.179860][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5834) 
[ 28.180192][ C3] ? process_backlog (./include/linux/local_lock_internal.h:54 net/core/dev.c:6442) 
[ 28.180528][ C3] process_backlog (./include/linux/rcupdate.h:869 net/core/dev.c:6445) 
[ 28.180869][ C3] __napi_poll.constprop.0 (net/core/dev.c:7482) 
[ 28.181205][ C3] net_rx_action (net/core/dev.c:7546 net/core/dev.c:7673) 
[ 28.181543][ C3] ? __pfx_net_rx_action (net/core/dev.c:7635) 
[ 28.181868][ C3] ? clockevents_program_event (kernel/time/clockevents.c:326) 
[ 28.182209][ C3] ? lock_downgrade (kernel/locking/lockdep.c:468 kernel/locking/lockdep.c:5763) 
[ 28.182542][ C3] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:95 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 28.182875][ C3] ? ktime_get (kernel/time/timekeeping.c:251 (discriminator 4) kernel/time/timekeeping.c:360 (discriminator 4) kernel/time/timekeeping.c:778 (discriminator 4)) 
[ 28.183134][ C3] ? clockevents_program_event (kernel/time/clockevents.c:334 (discriminator 3)) 
[ 28.183559][ C3] handle_softirqs (kernel/softirq.c:580) 
[ 28.183898][ C3] ? __dev_queue_xmit (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:908 net/core/dev.c:4740) 
[ 28.184234][ C3] do_softirq (kernel/softirq.c:480 kernel/softirq.c:467) 
[   28.184482][    C3]  </IRQ>
[   28.184659][    C3]  <TASK>
[ 28.184825][ C3] __local_bh_enable_ip (kernel/softirq.c:407) 
[ 28.185151][ C3] ? __dev_queue_xmit (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:908 net/core/dev.c:4740) 
[ 28.185486][ C3] __dev_queue_xmit (net/core/dev.c:4741) 
[ 28.185812][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 28.186147][ C3] ? __pfx___dev_queue_xmit (net/core/dev.c:4621) 
[ 28.186486][ C3] ? neigh_hh_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:836 ./include/net/neighbour.h:501) 
[ 28.186812][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 28.187150][ C3] ? neigh_hh_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:836 ./include/net/neighbour.h:501) 
[ 28.187493][ C3] ip_finish_output2 (./include/net/neighbour.h:545 net/ipv4/ip_output.c:235) 
[ 28.187828][ C3] ? ip_skb_dst_mtu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/ip.h:501 ./include/net/ip.h:515) 
[ 28.188156][ C3] ? __pfx_ip_finish_output2 (net/ipv4/ip_output.c:199) 
[ 28.188496][ C3] ? __ip_finish_output (./include/linux/skbuff.h:1685 ./include/linux/skbuff.h:5079 net/ipv4/ip_output.c:307 net/ipv4/ip_output.c:295) 
[ 28.188830][ C3] ip_output (./include/linux/netfilter.h:306 net/ipv4/ip_output.c:433) 
[ 28.189076][ C3] ? __ip_local_out (net/ipv4/ip_output.c:96 net/ipv4/ip_output.c:107) 
[ 28.189410][ C3] ? __pfx_ip_output (net/ipv4/ip_output.c:427) 
[ 28.189734][ C3] ? __ip_make_skb (net/ipv4/ip_output.c:1382 net/ipv4/ip_output.c:1492) 
[ 28.190064][ C3] ? __pfx_raw_getfrag (net/ipv4/raw.c:453) 
[ 28.190409][ C3] ? ip_append_data (net/ipv4/ip_output.c:1371 net/ipv4/ip_output.c:1350) 
[ 28.190766][ C3] ip_push_pending_frames (./include/net/dst.h:461 net/ipv4/ip_output.c:129 net/ipv4/ip_output.c:1501 net/ipv4/ip_output.c:1521) 
[ 28.191098][ C3] raw_sendmsg (net/ipv4/raw.c:658) 
[ 28.191441][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 28.191769][ C3] ? __pfx_raw_sendmsg (net/ipv4/raw.c:483) 
[ 28.192098][ C3] ? do_fault_around (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 mm/memory.c:5551) 
[ 28.192441][ C3] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 28.192791][ C3] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 28.193125][ C3] ? __might_fault (mm/memory.c:6971 mm/memory.c:6965) 
[ 28.193460][ C3] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 28.193790][ C3] ? __might_fault (mm/memory.c:6971 mm/memory.c:6965) 
[ 28.194120][ C3] __sys_sendto (net/socket.c:714 net/socket.c:729 net/socket.c:2228) 
[ 28.194465][ C3] ? __pfx___sys_sendto (net/socket.c:2195) 
[ 28.194805][ C3] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 28.195134][ C3] ? rseq_update_cpu_node_id (kernel/rseq.c:189 (discriminator 10)) 
[ 28.195479][ C3] ? __rseq_handle_notify_resume (kernel/rseq.c:442) 
[ 28.195890][ C3] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:425) 
[ 28.196300][ C3] ? xfd_validate_state (arch/x86/kernel/fpu/xstate.c:1473 arch/x86/kernel/fpu/xstate.c:1517) 
[ 28.196633][ C3] __x64_sys_sendto (net/socket.c:2231) 
[ 28.196958][ C3] ? do_syscall_64 (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 ./include/linux/entry-common.h:199 arch/x86/entry/syscall_64.c:90) 
[ 28.197298][ C3] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 28.197627][ C3] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 28.197957][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   28.198377][    C3] RIP: 0033:0x7f62e71ff28a
[ 28.198722][ C3] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89
All code
========
   0:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   4:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   b:	eb b8                	jmp    0xffffffffffffffc5
   d:	0f 1f 00             	nopl   (%rax)
  10:	f3 0f 1e fa          	endbr64
  14:	41 89 ca             	mov    %ecx,%r10d
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 15                	jne    0x38
  23:	b8 2c 00 00 00       	mov    $0x2c,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 7e                	ja     0xb0
  32:	c3                   	ret
  33:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  38:	41 54                	push   %r12
  3a:	48 83 ec 30          	sub    $0x30,%rsp
  3e:	44                   	rex.R
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 7e                	ja     0x86
   8:	c3                   	ret
   9:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   e:	41 54                	push   %r12
  10:	48 83 ec 30          	sub    $0x30,%rsp
  14:	44                   	rex.R
  15:	89                   	.byte 0x89
[   28.199904][    C3] RSP: 002b:00007ffe0ab000b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   28.200422][    C3] RAX: ffffffffffffffda RBX: 0000000000000040 RCX: 00007f62e71ff28a
[   28.200921][    C3] RDX: 0000000000000048 RSI: 00000000163062a0 RDI: 0000000000000005
[   28.201424][    C3] RBP: 00007ffe0ab00110 R08: 00000000004185e0 R09: 0000000000000010
[   28.201917][    C3] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000005c


Finger prints:
__icmp_send:ip_rt_send_redirect:ip_forward:ip_rcv:__netif_receive_skb_one_core