======================================
| [    1.879784] ip (233) used greatest stack depth: 12344 bytes left
| [   17.879626] ------------[ cut here ]------------
| [   17.879686] kernel BUG at net/core/skbuff.c:3605!
| [   17.879725] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
[   17.879806] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   17.879870] RIP: 0010:skb_copy_and_csum_bits (net/core/skbuff.c:3605 (discriminator 1)) 
[ 17.879902] Code: 89 6c 24 0c 41 89 c4 0f 84 1d ff ff ff 45 01 fe 49 63 c7 44 89 74 24 08 49 01 c5 e9 d0 fd ff ff 90 0f 0b 90 e9 3d ff ff ff 90 <0f> 0b 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
All code
========
   0:	89 6c 24 0c          	mov    %ebp,0xc(%rsp)
   4:	41 89 c4             	mov    %eax,%r12d
   7:	0f 84 1d ff ff ff    	je     0xffffffffffffff2a
   d:	45 01 fe             	add    %r15d,%r14d
  10:	49 63 c7             	movslq %r15d,%rax
  13:	44 89 74 24 08       	mov    %r14d,0x8(%rsp)
  18:	49 01 c5             	add    %rax,%r13
  1b:	e9 d0 fd ff ff       	jmp    0xfffffffffffffdf0
  20:	90                   	nop
  21:	0f 0b                	ud2
  23:	90                   	nop
  24:	e9 3d ff ff ff       	jmp    0xffffffffffffff66
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  31:	90                   	nop
  32:	90                   	nop
  33:	90                   	nop
  34:	90                   	nop
  35:	90                   	nop
  36:	90                   	nop
  37:	90                   	nop
  38:	90                   	nop
  39:	90                   	nop
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   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
[   17.879999] RSP: 0018:ffffc086c0140ad8 EFLAGS: 00010202
[   17.880031] RAX: 0000000000000020 RBX: 0000000000000030 RCX: 0000000000000000
[   17.880076] RDX: 0000000000000030 RSI: ffff9b0f42339278 RDI: 0000000000000000
[   17.880121] RBP: 0000000000000020 R08: 0000000000000000 R09: ffff9b0f4233b840
[   17.880166] R10: 0000000000000030 R11: 0000000000000000 R12: 00000000350a348e
[   17.880211] R13: ffff9b0f42339278 R14: 0000000000000030 R15: 0000000000000030
[   17.880258] FS:  00007fe13431f740(0000) GS:ffff9b0f7ed80000(0000) knlGS:0000000000000000
[   17.880303] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.880340] CR2: 00005614139b7c80 CR3: 0000000002598003 CR4: 0000000000770ef0
[   17.880386] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   17.880430] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   17.880475] PKRU: 55555554
[   17.880488] Call Trace:
[   17.880505]  <IRQ>
[   17.880525] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) 
[   17.880553] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) 
[   17.880577] ? skb_copy_and_csum_bits (net/core/skbuff.c:3605 (discriminator 1)) 
[   17.880610] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) 
[   17.880635] ? skb_copy_and_csum_bits (net/core/skbuff.c:3605 (discriminator 1)) 
[   17.880667] ? exc_invalid_op (arch/x86/kernel/traps.c:265) 
[   17.880692] ? skb_copy_and_csum_bits (net/core/skbuff.c:3605 (discriminator 1)) 
[   17.880724] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   17.880750] ? skb_copy_and_csum_bits (net/core/skbuff.c:3605 (discriminator 1)) 
[   17.880782] ? skb_copy_and_csum_bits (net/core/skbuff.c:3540) 
[   17.880814] icmpv6_getfrag (./include/linux/bitops.h:136 ./include/net/checksum.h:90 ./include/net/checksum.h:98 net/ipv6/icmp.c:324) 
[   17.880841] __ip6_append_data.isra.0 (net/ipv6/ip6_output.c:1683) 
[   17.880877] ? __pfx_icmpv6_getfrag (net/ipv6/icmp.c:317) 
[   17.880908] ? __pfx_icmpv6_getfrag (net/ipv6/icmp.c:317) 
[   17.880939] ip6_append_data (net/ipv6/ip6_output.c:1838) 
[   17.880966] icmp6_send (net/ipv6/icmp.c:616) 
[   17.880993] ? ip6_forward (net/ipv6/ip6_output.c:548) 
[   17.881016] ip6_forward (net/ipv6/ip6_output.c:548) 
[   17.881043] ? ipv6_rcv (./include/linux/skbuff.h:1139 ./include/net/dst.h:460 net/ipv6/ip6_input.c:79 ./include/linux/netfilter.h:314 ./include/linux/netfilter.h:308 net/ipv6/ip6_input.c:310) 
[   17.881068] __netif_receive_skb_one_core (net/core/dev.c:5613) 
[   17.881102] process_backlog (./include/linux/rcupdate.h:782 net/core/dev.c:6053) 
[   17.881128] __napi_poll (net/core/dev.c:6703) 
[   17.881155] net_rx_action (net/core/dev.c:6774 net/core/dev.c:6886) 
[   17.881180] __do_softirq (kernel/softirq.c:553) 
[   17.881206] do_softirq (kernel/softirq.c:454 kernel/softirq.c:441) 
[   17.881233]  </IRQ>
[   17.881251]  <TASK>
[   17.881264] __local_bh_enable_ip (kernel/softirq.c:381) 
[   17.881290] __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) 
[   17.881317] neigh_resolve_output (net/core/neighbour.c:1547) 
[   17.881348] ip6_finish_output2 (./include/net/neighbour.h:542 net/ipv6/ip6_output.c:137) 
[   17.881374] ? __ip6_local_out (./include/net/l3mdev.h:203 ./include/net/l3mdev.h:219 net/ipv6/output_core.c:137) 
[   17.881401] ip6_finish_output (net/ipv6/ip6_output.c:211 net/ipv6/ip6_output.c:222) 
[   17.881427] ip6_send_skb (net/ipv6/ip6_output.c:1959) 
[   17.881452] udp_v6_send_skb (net/ipv6/udp.c:1286) 
[   17.881479] udpv6_sendmsg (net/ipv6/udp.c:1580) 
[   17.881503] ? __pfx_ip_generic_getfrag (net/ipv4/ip_output.c:935) 
[   17.881535] ? do_ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:408) 
[   17.881571] ? __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) 
[   17.881595] __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) 
[   17.881623] ? do_sock_setsockopt (net/socket.c:2316) 
[   17.881656] ? __sys_connect (net/socket.c:2048 net/socket.c:2065) 
[   17.881682] ? __sys_setsockopt (./include/linux/file.h:32 net/socket.c:2336) 
[   17.881708] __x64_sys_sendto (net/socket.c:2203 net/socket.c:2199 net/socket.c:2199) 
[   17.881732] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[   17.881759] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[   17.881797] RIP: 0033:0x7fe134471700
[ 17.881834] Code: ff ff 64 89 02 eb bd 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 1d 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 68 c3 0f 1f 80 00 00 00 00 41 54 48 83 ec 20
All code
========
   0:	ff                   	(bad)
   1:	ff 64 89 02          	jmp    *0x2(%rcx,%rcx,4)
   5:	eb bd                	jmp    0xffffffffffffffc4
   7:	0f 1f 00             	nopl   (%rax)
   a:	f3 0f 1e fa          	endbr64
   e:	41 89 ca             	mov    %ecx,%r10d
  11:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  18:	00 
  19:	85 c0                	test   %eax,%eax
  1b:	75 1d                	jne    0x3a
  1d:	45 31 c9             	xor    %r9d,%r9d
  20:	45 31 c0             	xor    %r8d,%r8d
  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 68                	ja     0x9a
  32:	c3                   	ret
  33:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  3a:	41 54                	push   %r12
  3c:	48 83 ec 20          	sub    $0x20,%rsp

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 68                	ja     0x70
   8:	c3                   	ret
   9:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  10:	41 54                	push   %r12
  12:	48 83 ec 20          	sub    $0x20,%rsp
[   17.881932] RSP: 002b:00007ffc145e88e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   17.881976] RAX: ffffffffffffffda RBX: 0000561414b0d3e0 RCX: 00007fe134471700
[   17.882023] RDX: 0000000000000020 RSI: 0000561414b0f5b0 RDI: 0000000000000005
[   17.882077] RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000
[   17.882122] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001


Finger prints:
skb_copy_and_csum_bits:icmpv6_getfrag:ip6_append_data:icmp6_send