======================================
|
| [    3.145087] ------------[ cut here ]------------
| [    3.145148] kernel BUG at net/core/skbuff.c:2813!
| [    3.145195] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
[    3.145291] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[    3.145366] RIP: 0010:__pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1)) 
[ 3.145408] Code: 44 24 10 e8 ad e4 81 ff 49 8b be c0 00 00 00 44 8b 44 24 10 41 8b 8e bc 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 7e 20
All code
========
   0:	44 24 10             	rex.R and $0x10,%al
   3:	e8 ad e4 81 ff       	call   0xffffffffff81e4b5
   8:	49 8b be c0 00 00 00 	mov    0xc0(%r14),%rdi
   f:	44 8b 44 24 10       	mov    0x10(%rsp),%r8d
  14:	41 8b 8e bc 00 00 00 	mov    0xbc(%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 7e 20    	testb  $0x20,0x7e(%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 7e 20    	testb  $0x20,0x7e(%r12)
[    3.145544] RSP: 0018:ffffb3c2c0140d80 EFLAGS: 00010282
[    3.145596] RAX: 00000000fffffff2 RBX: 0000000000000014 RCX: 0000000000000014
[    3.145657] RDX: ffff96ddc2b59244 RSI: 0000000000000100 RDI: 0000000000000000
[    3.145726] RBP: ffffb3c2c0140dc0 R08: 00000000ffffffd8 R09: ffff96ddc1955000
[    3.145781] R10: 0000000000000008 R11: ffff96ddc2375fd4 R12: 00000000ffffffff
[    3.145847] R13: 0000000000000014 R14: ffff96ddc2375f00 R15: 0000000000000001
[    3.145916] FS:  00007f1754a9f740(0000) GS:ffff96ddfed80000(0000) knlGS:0000000000000000
[    3.145980] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    3.146031] CR2: 0000560983a78128 CR3: 00000000012a8006 CR4: 0000000000770ef0
[    3.146105] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    3.146163] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    3.146234] PKRU: 55555554
[    3.146260] Call Trace:
[    3.146284]  <IRQ>
[    3.146307] ? die (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:434 arch/x86/kernel/dumpstack.c:447) 
[    3.146341] ? do_trap (arch/x86/kernel/traps.c:113 arch/x86/kernel/traps.c:154) 
[    3.146372] ? __pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1)) 
[    3.146399] ? do_error_trap (./arch/x86/include/asm/traps.h:58 arch/x86/kernel/traps.c:175) 
[    3.146425] ? __pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1)) 
[    3.146452] ? exc_invalid_op (arch/x86/kernel/traps.c:265) 
[    3.146485] ? __pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1)) 
[    3.146512] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:568) 
[    3.146545] ? __pskb_pull_tail (net/core/skbuff.c:2813 (discriminator 1)) 
[    3.146578] tcp_v4_rcv (./include/linux/skbuff.h:2731 ./include/linux/skbuff.h:2739 net/ipv4/tcp_ipv4.c:2181) 
[    3.146618] ? raw_local_deliver (net/ipv4/raw.c:199) 
[    3.146653] ip_protocol_deliver_rcu (net/ipv4/ip_input.c:205 (discriminator 1)) 
[    3.146696] ip_local_deliver_finish (./include/linux/rcupdate.h:782 net/ipv4/ip_input.c:234) 
[    3.146731] __netif_receive_skb_one_core (net/core/dev.c:5610 (discriminator 4)) 
[    3.146777] process_backlog (./include/linux/rcupdate.h:782 net/core/dev.c:6053) 
[    3.146812] __napi_poll (net/core/dev.c:6703) 
[    3.146847] net_rx_action (net/core/dev.c:6774 net/core/dev.c:6886) 
[    3.146876] __do_softirq (kernel/softirq.c:553) 
[    3.146910] do_softirq (kernel/softirq.c:454 kernel/softirq.c:441) 
[    3.146942]  </IRQ>
[    3.146962]  <TASK>
[    3.146987] __local_bh_enable_ip (kernel/softirq.c:381) 
[    3.147026] __dev_queue_xmit (net/core/dev.c:4400) 
[    3.147065] ? __ip_queue_xmit (net/ipv4/ip_output.c:544) 
[    3.147100] ip_finish_output2 (./include/linux/netdevice.h:3172 ./include/net/neighbour.h:526 ./include/net/neighbour.h:540 net/ipv4/ip_output.c:235) 
[    3.147139] __ip_queue_xmit (net/ipv4/ip_output.c:535) 
[    3.147179] ? skb_release_data (net/core/skbuff.c:1153) 
[    3.147216] __tcp_transmit_skb (net/ipv4/tcp_output.c:1462 (discriminator 4)) 
[    3.147257] ? _copy_to_user (./arch/x86/include/asm/smap.h:33 ./arch/x86/include/asm/uaccess_64.h:120 ./arch/x86/include/asm/uaccess_64.h:133 lib/usercopy.c:41) 
[    3.147297] ? sk_getsockopt (net/core/sock.c:2005) 
[    3.147334] tcp_write_xmit (net/ipv4/tcp_output.c:2792) 
[    3.147371] __tcp_push_pending_frames (net/ipv4/tcp_output.c:2977) 
[    3.147420] __tcp_close (net/ipv4/tcp.c:2842) 
[    3.147461] tcp_close (net/ipv4/tcp.c:2932) 
[    3.147490] inet_release (net/ipv4/af_inet.c:436) 
[    3.147530] __sock_release (net/socket.c:659) 
[    3.147562] sock_close (net/socket.c:1423) 
[    3.147597] __fput (fs/file_table.c:376) 
[    3.147636] __x64_sys_close (fs/open.c:1557 fs/open.c:1539 fs/open.c:1539) 
[    3.147674] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[    3.147709] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[    3.147755] RIP: 0033:0x7f1754be1007
[ 3.147784] Code: ff e8 fd e2 01 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 41 c3 48 83 ec 18 89 7c 24 0c e8 c3 cb f5 ff
All code
========
   0:	ff                   	(bad)
   1:	e8 fd e2 01 00       	call   0x1e303
   6:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   d:	00 00 00 
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 03 00 00 00       	mov    $0x3,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 41                	ja     0x73
  32:	c3                   	ret
  33:	48 83 ec 18          	sub    $0x18,%rsp
  37:	89 7c 24 0c          	mov    %edi,0xc(%rsp)
  3b:	e8 c3 cb f5 ff       	call   0xfffffffffff5cc03

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 41                	ja     0x49
   8:	c3                   	ret
   9:	48 83 ec 18          	sub    $0x18,%rsp
   d:	89 7c 24 0c          	mov    %edi,0xc(%rsp)
  11:	e8 c3 cb f5 ff       	call   0xfffffffffff5cbd9
[    3.147893] RSP: 002b:00007ffd81abd548 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[    3.147946] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1754be1007
[    3.148006] RDX: 0000000000000031 RSI: 0000000000000001 RDI: 000000000000000b
[    3.148065] RBP: 0000000000408400 R08: 00007ffd81abd57c R09: 0000000000000000
[    3.148132] R10: 00007ffd81abd578 R11: 0000000000000246 R12: 000000000000000b


Finger prints:
__pskb_pull_tail:tcp_v4_rcv:ip_protocol_deliver_rcu:ip_local_deliver_finish