======================================
| 0
| xx__-> [   18.733159][  T232] ------------[ cut here ]------------
| [   18.733699][  T232] WARNING: CPU: 0 PID: 232 at ./include/net/sch_generic.h:843 __dev_xmit_skb (./include/net/sch_generic.h:843 ./include/net/sch_generic.h:889 ./include/net/sch_generic.h:901 net/core/dev.c:4239)
| [   18.734333][  T232] Modules linked in:
[   18.735360][  T232] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.735802][  T232] RIP: 0010:__dev_xmit_skb (./include/net/sch_generic.h:843 ./include/net/sch_generic.h:889 ./include/net/sch_generic.h:901 net/core/dev.c:4239)
[   18.736175][  T232] Code: 7d 06 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 86 0d 00 00 66 83 7d 06 00 74 04 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 28 48 89 fa 48
All code
========
   0:	7d 06                	jge    0x8
   2:	48 89 fa             	mov    %rdi,%rdx
   5:	48 c1 ea 03          	shr    $0x3,%rdx
   9:	0f b6 14 02          	movzbl (%rdx,%rax,1),%edx
   d:	48 89 f8             	mov    %rdi,%rax
  10:	83 e0 07             	and    $0x7,%eax
  13:	83 c0 01             	add    $0x1,%eax
  16:	38 d0                	cmp    %dl,%al
  18:	7c 08                	jl     0x22
  1a:	84 d2                	test   %dl,%dl
  1c:	0f 85 86 0d 00 00    	jne    0xda8
  22:	66 83 7d 06 00       	cmpw   $0x0,0x6(%rbp)
  27:	74 04                	je     0x2d
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	49 8d 7c 24 28       	lea    0x28(%r12),%rdi
  3c:	48 89 fa             	mov    %rdi,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	49 8d 7c 24 28       	lea    0x28(%r12),%rdi
  12:	48 89 fa             	mov    %rdi,%rdx
  15:	48                   	rex.W
[   18.737400][  T232] RSP: 0018:ffffc90000a37708 EFLAGS: 00010202
[   18.737809][  T232] RAX: 0000000000000007 RBX: 0000000000000001 RCX: ffffffffa29f4955
[   18.738413][  T232] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88800954da06
[   18.739031][  T232] RBP: ffff88800954da00 R08: ffff88801228fcc0 R09: ffffed1000494cb3
[   18.739609][  T232] R10: ffff8880024a659f R11: ffffc90000a37420 R12: ffff88801228fcc0
[   18.740230][  T232] R13: ffff8880024a6400 R14: ffff8880024a6608 R15: ffff8880024a6400
[   18.740756][  T232] FS:  0000000003fab3c0(0000) GS:ffff88809101a000(0000) knlGS:0000000000000000
[   18.741363][  T232] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   18.741801][  T232] CR2: 00007fe2fb47c000 CR3: 0000000009239003 CR4: 0000000000772ef0
[   18.742500][  T232] PKRU: 55555554
[   18.742753][  T232] Call Trace:
[   18.743010][  T232]  <TASK>
[   18.743189][  T232]  ? dev_get_stats (net/core/dev.c:4143)
[   18.743544][  T232]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   18.743903][  T232]  ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5831)
[   18.744236][  T232]  __dev_queue_xmit (net/core/dev.c:4786)
[   18.744582][  T232]  ? netdev_core_pick_tx (net/core/dev.c:4728)
[   18.744892][  T232]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   18.745235][  T232]  ? neigh_connected_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:836 net/core/neighbour.c:1617)
[   18.745569][  T232]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   18.745904][  T232]  ? neigh_connected_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:836 net/core/neighbour.c:1617)
[   18.746237][  T232]  ip_finish_output2 (./include/net/neighbour.h:556 net/ipv4/ip_output.c:237)
[   18.746598][  T232]  ? ip_skb_dst_mtu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 ./include/net/ip.h:504 ./include/net/ip.h:518)
[   18.746913][  T232]  ? ip_fragment.constprop.0 (net/ipv4/ip_output.c:201)
[   18.747250][  T232]  ? ip_skb_dst_mtu (./include/net/ip.h:523)
[   18.747613][  T232]  ? __ip_finish_output (./include/linux/skbuff.h:1724 ./include/linux/skbuff.h:5149 net/ipv4/ip_output.c:309)
[   18.747939][  T232]  ip_output (./include/linux/netfilter.h:414 net/ipv4/ip_output.c:438)
[   18.748191][  T232]  __ip_queue_xmit (./include/net/dst.h:464 net/ipv4/ip_output.c:131 net/ipv4/ip_output.c:534)
[   18.748547][  T232]  __tcp_transmit_skb (net/ipv4/tcp_output.c:1628)
[   18.748889][  T232]  ? __tcp_select_window (net/ipv4/tcp_output.c:1449)
[   18.749228][  T232]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   18.749576][  T232]  ? ktime_get (./include/linux/seqlock.h:74 kernel/time/timekeeping.c:824)
[   18.749914][  T232]  ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:95 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86)
[   18.750246][  T232]  tcp_send_active_reset (net/ipv4/tcp_output.c:3833)
[   18.750604][  T232]  tcp_disconnect (net/ipv4/tcp.c:3368)
[   18.750930][  T232]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   18.751265][  T232]  ? __inet_stream_connect (net/ipv4/af_inet.c:746)
[   18.751619][  T232]  __inet_stream_connect (net/ipv4/af_inet.c:649)
[   18.751946][  T232]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   18.752305][  T232]  ? __inet_stream_connect (net/ipv4/af_inet.c:746)
[   18.752642][  T232]  inet_stream_connect (net/ipv4/af_inet.c:751)
[   18.752969][  T232]  __sys_connect (./include/linux/file.h:62 ./include/linux/file.h:83 net/socket.c:2111)
[   18.753314][  T232]  ? __sys_connect_file (net/socket.c:2109)
[   18.753674][  T232]  ? vfs_write (fs/read_write.c:705)
[   18.754012][  T232]  __x64_sys_connect (net/socket.c:2124)
[   18.754355][  T232]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   18.754699][  T232]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   18.755027][  T232]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   18.755450][  T232] RIP: 0033:0x49264b
[   18.755715][  T232] Code: 83 ec 18 89 54 24 0c 48 89 34 24 89 7c 24 08 e8 6b 54 04 00 8b 54 24 0c 48 8b 34 24 41 89 c0 8b 7c 24 08 b8 2a 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 08 e8 c1 54 04 00 8b 44
All code
========
   0:	83 ec 18             	sub    $0x18,%esp
   3:	89 54 24 0c          	mov    %edx,0xc(%rsp)
   7:	48 89 34 24          	mov    %rsi,(%rsp)
   b:	89 7c 24 08          	mov    %edi,0x8(%rsp)
   f:	e8 6b 54 04 00       	call   0x4547f
  14:	8b 54 24 0c          	mov    0xc(%rsp),%edx
  18:	48 8b 34 24          	mov    (%rsp),%rsi
  1c:	41 89 c0             	mov    %eax,%r8d
  1f:	8b 7c 24 08          	mov    0x8(%rsp),%edi
  23:	b8 2a 00 00 00       	mov    $0x2a,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 35                	ja     0x67
  32:	44 89 c7             	mov    %r8d,%edi
  35:	89 44 24 08          	mov    %eax,0x8(%rsp)
  39:	e8 c1 54 04 00       	call   0x454ff
  3e:	8b                   	.byte 0x8b
  3f:	44                   	rex.R

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 35                	ja     0x3d
   8:	44 89 c7             	mov    %r8d,%edi
   b:	89 44 24 08          	mov    %eax,0x8(%rsp)
   f:	e8 c1 54 04 00       	call   0x454d5
  14:	8b                   	.byte 0x8b
  15:	44                   	rex.R
[   18.756859][  T232] RSP: 002b:00007ffcb691fd30 EFLAGS: 00000293 ORIG_RAX: 000000000000002a
[   18.757379][  T232] RAX: ffffffffffffffda RBX: 00007ffcb6920380 RCX: 000000000049264b
[   18.757864][  T232] RDX: 0000000000000080 RSI: 00007ffcb691fd80 RDI: 000000000000000a
[   18.758351][  T232] RBP: 00007ffcb691fe10 R08: 0000000000000000 R09: 0000000000000000
[   18.758829][  T232] R10: 0000000000000000 R11: 0000000000000293 R12: 00007ffcb69202f8


Finger prints:
__dev_xmit_skb:__dev_queue_xmit:ip_finish_output2:ip_output:__ip_queue_xmit