======================================
|
| [   76.650973] ------------[ cut here ]------------
| [   76.651065] kernel BUG at net/core/skbuff.c:2813!
| [   76.651120] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
[   76.651226] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   76.651320] RIP: 0010:__pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1)) 
[ 76.651370] Code: 44 24 10 e8 5d 2c 83 ff 49 8b be b8 00 00 00 44 8b 44 24 10 41 8b 8e b4 00 00 00 e9 f4 fc ff ff 4c 8d 48 ff e9 41 fd ff ff 90 <0f> 0b 48 c7 44 24 10 00 00 00 00 e9 99 fe ff ff 41 f6 44 24 76 20
All code
========
   0:	44 24 10             	rex.R and $0x10,%al
   3:	e8 5d 2c 83 ff       	call   0xffffffffff832c65
   8:	49 8b be b8 00 00 00 	mov    0xb8(%r14),%rdi
   f:	44 8b 44 24 10       	mov    0x10(%rsp),%r8d
  14:	41 8b 8e b4 00 00 00 	mov    0xb4(%r14),%ecx
  1b:	e9 f4 fc ff ff       	jmp    0xfffffffffffffd14
  20:	4c 8d 48 ff          	lea    -0x1(%rax),%r9
  24:	e9 41 fd ff ff       	jmp    0xfffffffffffffd6a
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	48 c7 44 24 10 00 00 	movq   $0x0,0x10(%rsp)
  33:	00 00 
  35:	e9 99 fe ff ff       	jmp    0xfffffffffffffed3
  3a:	41 f6 44 24 76 20    	testb  $0x20,0x76(%r12)

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	48 c7 44 24 10 00 00 	movq   $0x0,0x10(%rsp)
   9:	00 00 
   b:	e9 99 fe ff ff       	jmp    0xfffffffffffffea9
  10:	41 f6 44 24 76 20    	testb  $0x20,0x76(%r12)
[   76.651507] RSP: 0018:ffffa9bd80140e00 EFLAGS: 00010282
[   76.651556] RAX: 00000000fffffff2 RBX: 0000000000000014 RCX: 0000000000000014
[   76.651619] RDX: ffff9c3101ed6688 RSI: ffff9c3101ed6640 RDI: 0000000000000000
[   76.651682] RBP: ffffa9bd80140e40 R08: 00000000ffffffdc R09: 0000000000000008
[   76.651746] R10: ffff9c31013c30c0 R11: 0000000000000024 R12: ffff9c31013c3000
[   76.651807] R13: 0000000000000014 R14: ffff9c31022aaa00 R15: 0000000000000002
[   76.651872] FS:  00007f030b40b640(0000) GS:ffff9c313ed80000(0000) knlGS:0000000000000000
[   76.651935] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   76.651986] CR2: 00007f030401c068 CR3: 00000000022c0006 CR4: 0000000000770ef0
[   76.652044] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   76.652105] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   76.652162] PKRU: 55555554
[   76.652181] Call Trace:
[   76.652204]  <IRQ>
[   76.652226] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) 
[   76.652264] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) 
[   76.652298] ? __pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1)) 
[   76.652333] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) 
[   76.652366] ? __pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1)) 
[   76.652401] ? exc_invalid_op (arch/x86/kernel/traps.c:265) 
[   76.652435] ? __pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1)) 
[   76.652463] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[   76.652500] ? __pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1)) 
[   76.652534] tcp_v4_early_demux (./include/linux/skbuff.h:2731 ./include/linux/skbuff.h:2739 net/ipv4/tcp_ipv4.c:1966) 
[   76.652572] ip_rcv_finish_core.constprop.0 (./include/linux/skbuff.h:1139 ./include/net/dst_metadata.h:94 net/ipv4/ip_input.c:364) 
[   76.652623] ip_rcv (net/ipv4/ip_input.c:448 ./include/linux/netfilter.h:422 net/ipv4/ip_input.c:569) 
[   76.652658] __netif_receive_skb_one_core (net/core/dev.c:5610 (discriminator 4)) 
[   76.652706] process_backlog (./include/linux/rcupdate.h:782 net/core/dev.c:6053) 
[   76.652738] __napi_poll (net/core/dev.c:6703) 
[   76.652773] net_rx_action (net/core/dev.c:6774 net/core/dev.c:6886) 
[   76.652808] __do_softirq (kernel/softirq.c:553) 
[   76.652846] do_softirq (kernel/softirq.c:454 kernel/softirq.c:441) 
[   76.652883]  </IRQ>
[   76.652906]  <TASK>
[   76.652924] __local_bh_enable_ip (kernel/softirq.c:381) 
[   76.652958] __dev_queue_xmit (net/core/dev.c:4400) 
[   76.652992] ? tcp_ao_hash_skb (net/ipv4/tcp_ao.c:643) 
[   76.653025] ip_finish_output2 (./include/linux/netdevice.h:3172 ./include/net/neighbour.h:526 ./include/net/neighbour.h:540 net/ipv4/ip_output.c:235) 
[   76.653060] ? __ip_finish_output (./include/linux/skbuff.h:4942 net/ipv4/ip_output.c:307) 
[   76.653102] __ip_queue_xmit (net/ipv4/ip_output.c:535) 
[   76.653137] __tcp_transmit_skb (net/ipv4/tcp_output.c:1462 (discriminator 4)) 
[   76.653174] tcp_write_xmit (net/ipv4/tcp_output.c:2792) 
[   76.653210] __tcp_push_pending_frames (net/ipv4/tcp_output.c:2977) 
[   76.653251] tcp_sendmsg_locked (net/ipv4/tcp.c:1309) 
[   76.653289] tcp_sendmsg (net/ipv4/tcp.c:1342) 
[   76.653319] __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) 
[   76.653356] ? __sys_getsockopt (./include/linux/file.h:32 net/socket.c:2405) 
[   76.653391] ? __sys_getsockopt (net/socket.c:2406) 
[   76.653425] __x64_sys_sendto (net/socket.c:2203 net/socket.c:2199 net/socket.c:2199) 
[   76.653458] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[   76.653495] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[   76.653543] RIP: 0033:0x7f030b55e74e
[ 76.653577] Code: 4c 24 1c e8 b4 c4 f4 ff 44 8b 54 24 1c 8b 3c 24 45 31 c9 41 89 c4 48 8b 54 24 10 48 8b 74 24 08 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 32 44 89 e7 48 89 04 24 e8 fe c4 f4 ff 48 8b
All code
========
   0:	4c 24 1c             	rex.WR and $0x1c,%al
   3:	e8 b4 c4 f4 ff       	call   0xfffffffffff4c4bc
   8:	44 8b 54 24 1c       	mov    0x1c(%rsp),%r10d
   d:	8b 3c 24             	mov    (%rsp),%edi
  10:	45 31 c9             	xor    %r9d,%r9d
  13:	41 89 c4             	mov    %eax,%r12d
  16:	48 8b 54 24 10       	mov    0x10(%rsp),%rdx
  1b:	48 8b 74 24 08       	mov    0x8(%rsp),%rsi
  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 32                	ja     0x64
  32:	44 89 e7             	mov    %r12d,%edi
  35:	48 89 04 24          	mov    %rax,(%rsp)
  39:	e8 fe c4 f4 ff       	call   0xfffffffffff4c53c
  3e:	48                   	rex.W
  3f:	8b                   	.byte 0x8b

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 32                	ja     0x3a
   8:	44 89 e7             	mov    %r12d,%edi
   b:	48 89 04 24          	mov    %rax,(%rsp)
   f:	e8 fe c4 f4 ff       	call   0xfffffffffff4c512
  14:	48                   	rex.W
  15:	8b                   	.byte 0x8b
[   76.653712] RSP: 002b:00007f030b40a480 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   76.653772] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007f030b55e74e
[   76.653834] RDX: 0000000000000064 RSI: 00007f030b40a5a0 RDI: 0000000000000008
[   76.653895] RBP: 00007f030b40a590 R08: 0000000000000000 R09: 0000000000000000
[   76.653956] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000


Finger prints:
__pskb_pull_tail:tcp_v4_early_demux:ip_rcv:__netif_receive_skb_one_core