======================================
| [    2.446008] Initializing XFRM netlink socket
| [   18.449122] ------------[ cut here ]------------
| [   18.449184] kernel BUG at net/core/skbuff.c:5103!
| [   18.449231] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
[   18.449318] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   18.449393] RIP: 0010:__skb_to_sgvec (net/core/skbuff.c:5103 (discriminator 1)) 
[ 18.449440] Code: 00 00 00 e9 d8 fe ff ff 41 8d 54 24 ff 48 63 d2 48 c1 e2 05 41 f6 44 15 00 02 74 84 e9 b9 fe ff ff 85 db 0f 84 b7 fe ff ff 90 <0f> 0b 41 89 c4 e9 ac fe ff ff 90 0f 0b 4c 8b 0d 30 7f d4 00 e9 e9
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 e9                	add    %ch,%cl
   4:	d8 fe                	fdivr  %st(6),%st
   6:	ff                   	(bad)
   7:	ff 41 8d             	incl   -0x73(%rcx)
   a:	54                   	push   %rsp
   b:	24 ff                	and    $0xff,%al
   d:	48 63 d2             	movslq %edx,%rdx
  10:	48 c1 e2 05          	shl    $0x5,%rdx
  14:	41 f6 44 15 00 02    	testb  $0x2,0x0(%r13,%rdx,1)
  1a:	74 84                	je     0xffffffffffffffa0
  1c:	e9 b9 fe ff ff       	jmp    0xfffffffffffffeda
  21:	85 db                	test   %ebx,%ebx
  23:	0f 84 b7 fe ff ff    	je     0xfffffffffffffee0
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	41 89 c4             	mov    %eax,%r12d
  2f:	e9 ac fe ff ff       	jmp    0xfffffffffffffee0
  34:	90                   	nop
  35:	0f 0b                	ud2
  37:	4c 8b 0d 30 7f d4 00 	mov    0xd47f30(%rip),%r9        # 0xd47f6e
  3e:	e9                   	.byte 0xe9
  3f:	e9                   	.byte 0xe9

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	41 89 c4             	mov    %eax,%r12d
   5:	e9 ac fe ff ff       	jmp    0xfffffffffffffeb6
   a:	90                   	nop
   b:	0f 0b                	ud2
   d:	4c 8b 0d 30 7f d4 00 	mov    0xd47f30(%rip),%r9        # 0xd47f44
  14:	e9                   	.byte 0xe9
  15:	e9                   	.byte 0xe9
[   18.449554] RSP: 0018:ffffb85440140b88 EFLAGS: 00010202
[   18.449594] RAX: 0000000000000058 RBX: 0000000000000040 RCX: 0000000000000001
[   18.449647] RDX: ffff905e046bbac0 RSI: 0000000000000001 RDI: ffff905e01f2f600
[   18.449699] RBP: 0000000000000058 R08: 0000000000000000 R09: ffff905e046bb800
[   18.449751] R10: 00000000000002c0 R11: 0000000000000002 R12: 0000000000000002
[   18.449809] R13: ffff905e046bbe18 R14: ffff905e046bbc00 R15: 0000000000000000
[   18.449864] FS:  00007f2e86bff300(0000) GS:ffff905e3ed80000(0000) knlGS:0000000000000000
[   18.449920] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   18.449963] CR2: 00007f2e86e8e840 CR3: 0000000002440004 CR4: 0000000000770ef0
[   18.450018] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   18.450068] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   18.450120] PKRU: 55555554
[   18.450141] Call Trace:
[   18.450168]  <IRQ>
[   18.450191] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) 
[   18.450227] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) 
[   18.450258] ? __skb_to_sgvec (net/core/skbuff.c:5103 (discriminator 1)) 
[   18.450288] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) 
[   18.450317] ? __skb_to_sgvec (net/core/skbuff.c:5103 (discriminator 1)) 
[   18.450348] ? exc_invalid_op (arch/x86/kernel/traps.c:265) 
[   18.450380] ? __skb_to_sgvec (net/core/skbuff.c:5103 (discriminator 1)) 
[   18.450410] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   18.450446] ? __skb_to_sgvec (net/core/skbuff.c:5103 (discriminator 1)) 
[   18.450475] skb_to_sgvec (net/core/skbuff.c:5123) 
[   18.450504] esp_output_tail (net/ipv4/esp4.c:578) 
[   18.450541] esp_xmit (net/ipv4/esp4_offload.c:342) 
[   18.450573] validate_xmit_xfrm (net/xfrm/xfrm_device.c:184) 
[   18.450603] ? validate_xmit_skb (net/core/dev.c:3632) 
[   18.450634] __dev_queue_xmit (net/core/dev.c:4364) 
[   18.450666] ? eth_header (net/ethernet/eth.c:85) 
[   18.450699] __neigh_update (net/core/neighbour.c:1461) 
[   18.450734] arp_process (./include/net/neighbour.h:444 (discriminator 4) net/ipv4/arp.c:934 (discriminator 4)) 
[   18.450769] ? ip_finish_output2 (net/ipv4/ip_output.c:245) 
[   18.450808] __netif_receive_skb_one_core (net/core/dev.c:5610 (discriminator 5)) 
[   18.450847] process_backlog (./include/linux/rcupdate.h:782 net/core/dev.c:6053) 
[   18.450877] __napi_poll (net/core/dev.c:6703) 
[   18.450908] net_rx_action (net/core/dev.c:6774 net/core/dev.c:6886) 
[   18.450936] __do_softirq (kernel/softirq.c:553) 
[   18.450971] do_softirq (kernel/softirq.c:454 kernel/softirq.c:441) 
[   18.451004]  </IRQ>
[   18.451024]  <TASK>
[   18.451045] __local_bh_enable_ip (kernel/softirq.c:381) 
[   18.451075] __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) 
[   18.451105] neigh_resolve_output (net/core/neighbour.c:1547) 
[   18.451144] ip_finish_output2 (./include/net/neighbour.h:542 net/ipv4/ip_output.c:235) 
[   18.451175] ? __ip_finish_output (./include/linux/skbuff.h:4942 net/ipv4/ip_output.c:307 net/ipv4/ip_output.c:295) 
[   18.451214] ip_push_pending_frames (./include/net/dst.h:450 net/ipv4/ip_output.c:129 net/ipv4/ip_output.c:1496 net/ipv4/ip_output.c:1516) 
[   18.451253] raw_sendmsg (net/ipv4/raw.c:648) 
[   18.451290] ? next_uptodate_folio (./include/linux/xarray.h:1699 mm/filemap.c:3395) 
[   18.451331] ? __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) 
[   18.451363] __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) 
[   18.451395] ? handle_mm_fault (mm/memory.c:5330 mm/memory.c:5486) 
[   18.451426] ? do_user_addr_fault (./include/linux/rcupdate.h:782 ./include/linux/mm.h:688 arch/x86/mm/fault.c:1357) 
[   18.451467] __x64_sys_sendto (net/socket.c:2203 net/socket.c:2199 net/socket.c:2199) 
[   18.451496] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[   18.451529] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[   18.451571] RIP: 0033:0x7f2e86ed585a
[ 18.451600] 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
[   18.451714] RSP: 002b:00007fff57f45a88 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   18.451767] RAX: ffffffffffffffda RBX: 0000000000000038 RCX: 00007f2e86ed585a
[   18.451818] RDX: 0000000000000040 RSI: 0000000000ef4340 RDI: 0000000000000005
[   18.451871] RBP: 00007fff57f45ae0 R08: 00000000004185e0 R09: 0000000000000010
[   18.451923] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000054


Finger prints:
__skb_to_sgvec:skb_to_sgvec:esp_output_tail:esp_xmit