======================================
| [  575.370607][ T2831] br0: port 2(eth1) entered forwarding state
| [  575.643926][    C3] ------------[ cut here ]------------
| [  575.644333][    C3] UBSAN: invalid-load in ./include/linux/skbuff.h:4267:9
| [  575.644703][    C3] load of value 107 is not a valid value for type '_Bool'
[  575.645473][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  575.646105][    C3] Call Trace:
[  575.646286][    C3]  <IRQ>
[ 575.646440][ C3] dump_stack_lvl (lib/dump_stack.c:107) 
[ 575.646693][ C3] __ubsan_handle_load_invalid_value (lib/ubsan.c:218 lib/ubsan.c:419) 
[ 575.647024][ C3] br_forward_finish.cold (./include/linux/skbuff.h:4267 net/bridge/br_forward.c:65) 
[ 575.647298][ C3] deliver_clone (net/bridge/br_forward.c:132) 
[ 575.647537][ C3] br_handle_frame_finish (net/bridge/br_input.c:215) 
[ 575.647830][ C3] ? __pfx_br_handle_frame_finish (net/bridge/br_input.c:75) 
[ 575.648138][ C3] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 575.648413][ C3] ? 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:228) 
[ 575.648659][ C3] ? 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:228) 
[
DETECTED CRASH, lowering timeout
575.648900][ C3] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) 
[ 575.649159][ C3] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) 
[ 575.649439][ C3] br_handle_frame (net/bridge/br_input.c:417) 
[ 575.649695][ C3] ? __pfx_br_handle_frame (net/bridge/br_input.c:321) 
[ 575.649975][ C3] __netif_receive_skb_core.constprop.0 (net/core/dev.c:5448) 
[ 575.650328][ C3] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 575.650564][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 575.650827][ C3] ? __pfx___netif_receive_skb_core.constprop.0 (net/core/dev.c:5341) 
[ 575.651204][ C3] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 575.651478][ C3] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5995) 
[ 575.651748][ C3] __netif_receive_skb_one_core (net/core/dev.c:5553) 
[ 575.652056][ C3] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5547) 
[ 575.652396][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 575.652643][ C3] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5995) 
[ 575.652908][ C3] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:5997) 
[ 575.653163][ C3] __napi_poll.constprop.0 (net/core/dev.c:6625) 
[ 575.653463][ C3] net_rx_action (net/core/dev.c:6694 net/core/dev.c:6827) 
[ 575.653718][ C3] ? __pfx_net_rx_action (net/core/dev.c:6791) 
[ 575.653989][ C3] ? lockdep_unlock (kernel/locking/lockdep.c:152 kernel/locking/lockdep.c:148) 
[ 575.654252][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 575.654504][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1828) 
[ 575.654780][ C3] __do_softirq (kernel/softirq.c:553) 
[ 575.655026][ C3] ? __neigh_event_send (./include/linux/bottom_half.h:33 net/core/neighbour.c:1245) 
[ 575.655307][ C3] do_softirq (kernel/softirq.c:454 kernel/softirq.c:441) 
[  575.655526][    C3]  </IRQ>
[  575.655683][    C3]  <TASK>
[ 575.655840][ C3] __local_bh_enable_ip (kernel/softirq.c:381) 
[ 575.656107][ C3] __neigh_event_send (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:207 ./include/trace/events/neigh.h:237 net/core/neighbour.c:1246) 
[ 575.656387][ C3] neigh_resolve_output (net/core/neighbour.c:1547) 
[ 575.656657][ C3] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:77 kernel/softirq.c:386) 
[ 575.656932][ C3] ? ___neigh_create (net/core/neighbour.c:722 (discriminator 9)) 
[ 575.657200][ C3] ip6_finish_output2 (./include/net/neighbour.h:542 net/ipv6/ip6_output.c:137) 
[ 575.657474][ C3] ip6_finish_output (net/ipv6/ip6_output.c:211 net/ipv6/ip6_output.c:222) 
[ 575.657740][ C3] ip6_output (./include/linux/netfilter.h:303 net/ipv6/ip6_output.c:243) 
[ 575.657973][ C3] ? __pfx___ip6_make_skb (net/ipv6/ip6_output.c:1874) 
[ 575.658247][ C3] ? __pfx_ip6_output (net/ipv6/ip6_output.c:230) 
[ 575.658515][ C3] ? ip6_local_out (net/ipv6/output_core.c:154) 
[ 575.658766][ C3] ip6_send_skb (net/ipv6/ip6_output.c:1958) 
[ 575.659005][ C3] rawv6_push_pending_frames (net/ipv6/raw.c:506) 
[ 575.659300][ C3] ? __pfx_raw6_getfrag (net/ipv6/raw.c:706) 
[ 575.659564][ C3] ? ip6_append_data (net/ipv6/ip6_output.c:1836) 
[ 575.659825][ C3] ? __pfx_rawv6_push_pending_frames (net/ipv6/raw.c:506) 
[ 575.660158][ C3] rawv6_sendmsg (net/ipv6/raw.c:921) 
[ 575.660421][ C3] ? __pfx_rawv6_sendmsg (net/ipv6/raw.c:736) 
[ 575.660692][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 575.660958][ C3] ? __lock_release (kernel/locking/lockdep.c:353 kernel/locking/lockdep.c:5436) 
[ 575.661222][ C3] ? 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:228) 
[ 575.661461][ C3] ? __lock_release (kernel/locking/lockdep.c:353 kernel/locking/lockdep.c:5436) 
[ 575.661726][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 575.661972][ C3] ? __might_fault (mm/memory.c:6060 mm/memory.c:6053) 
[ 575.662223][ C3] ? __might_fault (mm/memory.c:6060 mm/memory.c:6053) 
[ 575.662481][ C3] ? __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) 
[ 575.662730][ C3] __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) 
[ 575.662970][ C3] ? __pfx___sys_sendto (net/socket.c:2161) 
[ 575.663235][ C3] ? do_user_addr_fault (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 ./include/linux/mm.h:686 arch/x86/mm/fault.c:1366) 
[ 575.663527][ C3] ? 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:228) 
[ 575.663770][ C3] ? __lock_release (kernel/locking/lockdep.c:353 kernel/locking/lockdep.c:5436) 
[ 575.664031][ C3] ? __up_read (./arch/x86/include/asm/atomic64_64.h:79 ./include/linux/atomic/atomic-arch-fallback.h:2735 ./include/linux/atomic/atomic-long.h:184 ./include/linux/atomic/atomic-instrumented.h:3289 kernel/locking/rwsem.c:1347) 
[ 575.664267][ C3] ? __pfx___up_read (kernel/locking/rwsem.c:1339) 
[ 575.664526][ C3] ? do_user_addr_fault (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 ./include/linux/mm.h:688 arch/x86/mm/fault.c:1366) 
[ 575.664804][ C3] __x64_sys_sendto (net/socket.c:2199) 
[ 575.665060][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 575.665402][ C3] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 575.665645][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[  575.665954][    C3] RIP: 0033:0x7fb4a05bf85a
[ 575.666193][ 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
[  575.667185][    C3] RSP: 002b:00007ffebce18a58 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[  575.667621][    C3] RAX: ffffffffffffffda RBX: 0000000000000038 RCX: 00007fb4a05bf85a
[  575.668030][    C3] RDX: 0000000000000040 RSI: 0000000001954340 RDI: 0000000000000005
[  575.668444][    C3] RBP: 00007ffebce18ae0 R08: 0000000000418574 R09: 000000000000001c
[  575.668853][    C3] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000419ac0
[  575.669260][    C3] R13: 000000000040305a R14: 0000000000415dd0 R15: 00007fb4a06df000
| [  575.669864][    C3] ---[ end trace ]---
| [  575.670083][    C3] ------------[ cut here ]------------
| [  575.670407][    C3] UBSAN: invalid-load in ./include/linux/skbuff.h:4267:9
| [  575.670772][    C3] load of value 107 is not a valid value for type '_Bool'
[  575.671531][    C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  575.672157][    C3] Call Trace:
[  575.672334][    C3]  <IRQ>
[ 575.672487][ C3] dump_stack_lvl (lib/dump_stack.c:107) 
[ 575.672731][ C3] __ubsan_handle_load_invalid_value (lib/ubsan.c:218 lib/ubsan.c:419) 
[ 575.673061][ C3] skb_scrub_packet.cold (./include/linux/skbuff.h:4267 net/core/skbuff.c:6030) 
[ 575.673342][ C3] __dev_forward_skb2 (./include/linux/netdevice.h:4115 net/core/dev.c:2135) 
[ 575.673614][ C3] veth_xmit (drivers/net/veth.c:319 drivers/net/veth.c:374) 
[ 575.673844][ C3] dev_hard_start_xmit (./include/linux/netdevice.h:4991 ./include/linux/netdevice.h:5005 net/core/dev.c:3530 net/core/dev.c:3546) 
[ 575.674122][ C3] __dev_queue_xmit (./include/linux/netdevice.h:3369 net/core/dev.c:4338) 
[ 575.674387][ C3] ? vprintk_emit (kernel/printk/printk.c:2313) 
[ 575.674639][ C3] ? _printk (kernel/printk/printk.c:2323) 
[ 575.674856][ C3] ? __pfx___dev_queue_xmit (net/core/dev.c:4246) 
[ 575.675154][ C3] br_dev_queue_push_xmit (net/bridge/br_forward.c:34) 
[ 575.675439][ C3] ? __pfx_br_dev_queue_push_xmit (net/bridge/br_forward.c:34) 
[ 575.675757][ C3] deliver_clone (net/bridge/br_forward.c:132) 
[ 575.675996][ C3] br_handle_frame_finish (net/bridge/br_input.c:215) 
[ 575.676289][ C3] ? __pfx_br_handle_frame_finish (net/bridge/br_input.c:75) 
[ 575.676597][ C3] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 575.676870][ C3] ? 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:228) 
[ 575.677118][ C3] ? 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:228) 
[ 575.677357][ C3] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3759 kernel/locking/lockdep.c:3782 kernel/locking/lockdep.c:3837) 
[ 575.677615][ C3] ? __pfx_validate_chain (kernel/locking/lockdep.c:3825) 
[ 575.677895][ C3] br_handle_frame (net/bridge/br_input.c:417) 
[ 575.678150][ C3] ? __pfx_br_handle_frame (net/bridge/br_input.c:321) 
[ 575.678430][ C3] __netif_receive_skb_core.constprop.0 (net/core/dev.c:5448) 
[ 575.678780][ C3] ? mark_lock (kernel/locking/lockdep.c:4656 (discriminator 3)) 
[ 575.679017][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 575.679280][ C3] ? __pfx___netif_receive_skb_core.constprop.0 (net/core/dev.c:5341) 
[ 575.679657][ C3] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5756) 
[ 575.679930][ C3] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5995) 
[ 575.680196][ C3] __netif_receive_skb_one_core (net/core/dev.c:5553) 
[ 575.680503][ C3] ? __pfx___netif_receive_skb_one_core (net/core/dev.c:5547) 
[ 575.680841][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 575.681087][ C3] ? process_backlog (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/core/dev.c:5995) 
[ 575.681354][ C3] process_backlog (./include/linux/rcupdate.h:779 net/core/dev.c:5997) 
[ 575.681614][ C3] __napi_poll.constprop.0 (net/core/dev.c:6625) 
[ 575.681900][ C3] net_rx_action (net/core/dev.c:6694 net/core/dev.c:6827) 
[ 575.682158][ C3] ? __pfx_net_rx_action (net/core/dev.c:6791) 
[ 575.682429][ C3] ? lockdep_unlock (kernel/locking/lockdep.c:152 kernel/locking/lockdep.c:148) 
[ 575.682691][ C3] ? mark_held_locks (kernel/locking/lockdep.c:4274) 
[ 575.682940][ C3] ? hrtimer_interrupt (kernel/time/hrtimer.c:1828) 
[ 575.683216][ C3] __do_softirq (kernel/softirq.c:553) 
[ 575.683468][ C3] ? __neigh_event_send (./include/linux/bottom_half.h:33 net/core/neighbour.c:1245) 
[ 575.683748][ C3] do_softirq (kernel/softirq.c:454 kernel/softirq.c:441) 
[  575.683968][    C3]  </IRQ>
[  575.684125][    C3]  <TASK>
[ 575.684282][ C3] __local_bh_enable_ip (kernel/softirq.c:381) 
[ 575.684552][ C3] __neigh_event_send (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:207 ./include/trace/events/neigh.h:237 net/core/neighbour.c:1246) 
[ 575.684834][ C3] neigh_resolve_output (net/core/neighbour.c:1547) 
[ 575.685108][ C3] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:77 kernel/softirq.c:386) 
[ 575.685387][ C3] ? ___neigh_create (net/core/neighbour.c:722 (discriminator 9)) 
[ 575.685656][ C3] ip6_finish_output2 (./include/net/neighbour.h:542 net/ipv6/ip6_output.c:137) 
[ 575.685929][ C3] ip6_finish_output (net/ipv6/ip6_output.c:211 net/ipv6/ip6_output.c:222) 
[ 575.686201][ C3] ip6_output (./include/linux/netfilter.h:303 net/ipv6/ip6_output.c:243) 
[ 575.686430][ C3] ? __pfx___ip6_make_skb (net/ipv6/ip6_output.c:1874) 
[ 575.686704][ C3] ? __pfx_ip6_output (net/ipv6/ip6_output.c:230) 
[ 575.686973][ C3] ? ip6_local_out (net/ipv6/output_core.c:154) 
[ 575.687226][ C3] ip6_send_skb (net/ipv6/ip6_output.c:1958) 
[ 575.687464][ C3] rawv6_push_pending_frames (net/ipv6/raw.c:506) 
[ 575.687761][ C3] ? __pfx_raw6_getfrag (net/ipv6/raw.c:706) 
[ 575.688026][ C3] ? ip6_append_data (net/ipv6/ip6_output.c:1836) 
[ 575.688289][ C3] ? __pfx_rawv6_push_pending_frames (net/ipv6/raw.c:506) 
[ 575.688624][ C3] rawv6_sendmsg (net/ipv6/raw.c:921) 
[ 575.688886][ C3] ? __pfx_rawv6_sendmsg (net/ipv6/raw.c:736) 
[ 575.689161][ C3] ? __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 575.689429][ C3] ? __lock_release (kernel/locking/lockdep.c:353 kernel/locking/lockdep.c:5436) 
[ 575.689695][ C3] ? 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:228) 
[ 575.689936][ C3] ? __lock_release (kernel/locking/lockdep.c:353 kernel/locking/lockdep.c:5436) 
[ 575.690205][ C3] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 575.690454][ C3] ? __might_fault (mm/memory.c:6060 mm/memory.c:6053) 
[ 575.690704][ C3] ? __might_fault (mm/memory.c:6060 mm/memory.c:6053) 
[ 575.690963][ C3] ? __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) 
[ 575.691212][ C3] __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) 
[ 575.691456][ C3] ? __pfx___sys_sendto (net/socket.c:2161) 
[ 575.691722][ C3] ? do_user_addr_fault (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 ./include/linux/mm.h:686 arch/x86/mm/fault.c:1366) 
[ 575.692012][ C3] ? 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:228) 
[ 575.692251][ C3] ? __lock_release (kernel/locking/lockdep.c:353 kernel/locking/lockdep.c:5436) 
[ 575.692512][ C3] ? __up_read (./arch/x86/include/asm/atomic64_64.h:79 ./include/linux/atomic/atomic-arch-fallback.h:2735 ./include/linux/atomic/atomic-long.h:184 ./include/linux/atomic/atomic-instrumented.h:3289 kernel/locking/rwsem.c:1347) 
[ 575.692752][ C3] ? __pfx___up_read (kernel/locking/rwsem.c:1339) 
[ 575.693009][ C3] ? do_user_addr_fault (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 ./include/linux/mm.h:688 arch/x86/mm/fault.c:1366) 
[ 575.693292][ C3] __x64_sys_sendto (net/socket.c:2199) 
[ 575.693548][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 575.693896][ C3] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 575.694136][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[  575.694446][    C3] RIP: 0033:0x7fb4a05bf85a
[ 575.694680][ 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
[  575.695675][    C3] RSP: 002b:00007ffebce18a58 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[  575.696111][    C3] RAX: ffffffffffffffda RBX: 0000000000000038 RCX: 00007fb4a05bf85a
[  575.696529][    C3] RDX: 0000000000000040 RSI: 0000000001954340 RDI: 0000000000000005
[  575.696941][    C3] RBP: 00007ffebce18ae0 R08: 0000000000418574 R09: 000000000000001c
[  575.697352][    C3] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000419ac0


Finger prints:
dump_stack_lvl:__ubsan_handle_load_invalid_value:deliver_clone:br_handle_frame_finish
dump_stack_lvl:__ubsan_handle_load_invalid_value:__dev_forward_skb2:veth_xmit