======================================
| [    1.881605] ip (235) used greatest stack depth: 12832 bytes left
| [    9.324102] ------------[ cut here ]------------
| [    9.324166] kernel BUG at net/core/skbuff.c:3505!
| [    9.324225] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
[    9.324342] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[    9.324430] RIP: 0010:__skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) 
[ 9.324479] Code: 89 5c 24 04 44 89 d9 44 89 ff 44 89 ea ff d0 0f 1f 00 44 8b 5c 24 04 41 89 c7 eb b6 ff d0 0f 1f 00 41 89 c1 e9 71 fd ff ff 90 <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90
All code
========
   0:	89 5c 24 04          	mov    %ebx,0x4(%rsp)
   4:	44 89 d9             	mov    %r11d,%ecx
   7:	44 89 ff             	mov    %r15d,%edi
   a:	44 89 ea             	mov    %r13d,%edx
   d:	ff d0                	call   *%rax
   f:	0f 1f 00             	nopl   (%rax)
  12:	44 8b 5c 24 04       	mov    0x4(%rsp),%r11d
  17:	41 89 c7             	mov    %eax,%r15d
  1a:	eb b6                	jmp    0xffffffffffffffd2
  1c:	ff d0                	call   *%rax
  1e:	0f 1f 00             	nopl   (%rax)
  21:	41 89 c1             	mov    %eax,%r9d
  24:	e9 71 fd ff ff       	jmp    0xfffffffffffffd9a
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
  33:	00 00 00 00 
  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:	66 66 2e 0f 1f 84 00 	data16 cs nopw 0x0(%rax,%rax,1)
   9:	00 00 00 00 
   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
[    9.324633] RSP: 0018:ffffc07dc0114d90 EFLAGS: 00010206
[    9.324684] RAX: 0000000000000311 RBX: 0000000000000008 RCX: ffffa0c84441c300
[    9.324755] RDX: ffffa0c8424a26c0 RSI: 00000000000006c0 RDI: ffffa0c8424a2000
[    9.324820] RBP: ffffc07dc0114de8 R08: ffffc07dc0114de8 R09: 00000000e70d0004
[    9.324889] R10: 0000000000000008 R11: ffffa0c84441c3d4 R12: ffffa0c8423d8c00
[    9.324953] R13: 0000000000000008 R14: 0000000000000000 R15: 00000000e70d0004
[    9.325034] FS:  00007f0eac739740(0000) GS:ffffa0c87ed00000(0000) knlGS:0000000000000000
[    9.325101] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.325165] CR2: 0000000000418000 CR3: 0000000001f06006 CR4: 0000000000770ef0
[    9.325233] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.325299] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.325349] PKRU: 55555554
[    9.325374] Call Trace:
[    9.325401]  <IRQ>
[    9.325429] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) 
[    9.325470] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) 
[    9.325514] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) 
[    9.325540] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) 
[    9.325578] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) 
[    9.325623] ? exc_invalid_op (arch/x86/kernel/traps.c:265) 
[    9.325668] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) 
[    9.325703] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[    9.325738] ? __skb_checksum (net/core/skbuff.c:3505 (discriminator 1)) 
[    9.325775] __skb_checksum_complete (./arch/x86/include/asm/checksum_64.h:170 ./arch/x86/include/asm/checksum_64.h:180 net/core/skbuff.c:3643) 
[    9.325823] ? __pfx_csum_partial_ext (./include/net/checksum.h:120) 
[    9.325872] ? __pfx_csum_block_add_ext (./include/net/checksum.h:103) 
[    9.325912] icmpv6_rcv (./include/linux/skbuff.h:4567 net/ipv6/icmp.c:921) 
[    9.325958] ip6_protocol_deliver_rcu (net/ipv6/ip6_input.c:438 (discriminator 5)) 
[    9.326020] ip6_input_finish (./include/linux/rcupdate.h:782 net/ipv6/ip6_input.c:484) 
[    9.326049] __netif_receive_skb_one_core (net/core/dev.c:5613) 
[    9.326088] process_backlog (./include/linux/rcupdate.h:782 net/core/dev.c:6053) 
[    9.326116] __napi_poll (net/core/dev.c:6703) 
[    9.326148] net_rx_action (net/core/dev.c:6774 net/core/dev.c:6886) 
[    9.326175] __do_softirq (kernel/softirq.c:553) 
[    9.326210] do_softirq (kernel/softirq.c:454 kernel/softirq.c:441) 
[    9.326242]  </IRQ>
[    9.326263]  <TASK>
[    9.326284] __local_bh_enable_ip (kernel/softirq.c:381) 
[    9.326314] __dev_queue_xmit (net/core/dev.c:4400) 
[    9.326343] ? kmalloc_reserve (net/core/skbuff.c:606) 
[    9.326372] ip6_finish_output2 (./include/net/neighbour.h:526 ./include/net/neighbour.h:540 net/ipv6/ip6_output.c:137) 
[    9.326402] ? _copy_from_iter (./arch/x86/include/asm/smap.h:33 ./arch/x86/include/asm/uaccess_64.h:120 ./arch/x86/include/asm/uaccess_64.h:127 lib/iov_iter.c:55 ./include/linux/iov_iter.h:29 ./include/linux/iov_iter.h:245 ./include/linux/iov_iter.h:271 lib/iov_iter.c:268 lib/iov_iter.c:279) 
[    9.326434] ip6_finish_output (net/ipv6/ip6_output.c:211 net/ipv6/ip6_output.c:222) 
[    9.326464] rawv6_sendmsg (./include/net/dst.h:450 ./include/linux/netfilter.h:314 net/ipv6/raw.c:654 net/ipv6/raw.c:907) 
[    9.326494] ? sock_i_uid (net/core/sock.c:2611) 
[    9.326522] ? _copy_from_user (./arch/x86/include/asm/uaccess_64.h:112 ./arch/x86/include/asm/uaccess_64.h:127 lib/usercopy.c:23) 
[    9.326550] ? sock_copy_user_timeval (./include/linux/uaccess.h:183 ./include/linux/sockptr.h:48 ./include/linux/sockptr.h:55 net/core/sock.c:410) 
[    9.326586] ? sock_set_timeout (net/core/sock.c:429) 
[    9.326615] ? ip6_datagram_release_cb (./include/net/sock.h:2144 net/ipv6/datagram.c:129 net/ipv6/datagram.c:121) 
[    9.326652] ? __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) 
[    9.326680] __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) 
[    9.326710] ? do_sock_setsockopt (net/socket.c:2316) 
[    9.326749] ? __sys_setsockopt (./include/linux/file.h:32 net/socket.c:2336) 
[    9.326778] __x64_sys_sendto (net/socket.c:2203 net/socket.c:2199 net/socket.c:2199) 
[    9.326806] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[    9.326836] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[    9.326876] RIP: 0033:0x7f0eac88b85a
[ 9.326903] 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
[    9.327016] RSP: 002b:00007ffc22f584e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[    9.327067] RAX: ffffffffffffffda RBX: 00007ffc22f585d0 RCX: 00007f0eac88b85a
[    9.327118] RDX: 0000000000000311 RSI: 00000000004077e0 RDI: 0000000000000005
[    9.327169] RBP: 0000000000000005 R08: 00007ffc22f585d0 R09: 000000000000001c
[    9.327214] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000001c


Finger prints:
__skb_checksum:__skb_checksum_complete:icmpv6_rcv:ip6_protocol_deliver_rcu