======================================
| 0
| xx__-> [   18.367915][  T230] ------------[ cut here ]------------
| [   18.368502][  T230] WARNING: CPU: 0 PID: 230 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)
| [   18.369180][  T230] Modules linked in:
[   18.370343][  T230] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.370826][  T230] 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)
[   18.371265][  T230] 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
[   18.372608][  T230] RSP: 0018:ffffc90000ac73e8 EFLAGS: 00010202
[   18.373132][  T230] RAX: 0000000000000007 RBX: 0000000000000001 RCX: ffffffffa07f4955
[   18.373692][  T230] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888005239a06
[   18.374223][  T230] RBP: ffff888005239a00 R08: ffff88800a784118 R09: ffffed1001528e33
[   18.374791][  T230] R10: ffff88800a94719f R11: ffffc90000ac7100 R12: ffff88800a784118
[   18.375353][  T230] R13: ffff88800a947000 R14: ffff88800a947208 R15: ffff88800a947000
[   18.375850][  T230] FS:  00000000069053c0(0000) GS:ffff88808d61a000(0000) knlGS:0000000000000000
[   18.376458][  T230] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   18.376862][  T230] CR2: 00007fe159c99000 CR3: 000000000a922002 CR4: 0000000000772ef0
[   18.377356][  T230] PKRU: 55555554
[   18.377599][  T230] Call Trace:
[   18.378015][  T230]  <TASK>
[   18.378195][  T230]  ? dev_get_stats (net/core/dev.c:4143)
[   18.378532][  T230]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   18.378850][  T230]  ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5831)
[   18.379178][  T230]  __dev_queue_xmit (net/core/dev.c:4786)
[   18.379552][  T230]  ? netdev_core_pick_tx (net/core/dev.c:4728)
[   18.379861][  T230]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   18.380194][  T230]  ? neigh_connected_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:836 net/core/neighbour.c:1617)
[   18.380567][  T230]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   18.380909][  T230]  ? neigh_connected_output (./include/linux/seqlock.h:74 ./include/linux/seqlock.h:836 net/core/neighbour.c:1617)
[   18.381279][  T230]  ip_finish_output2 (./include/net/neighbour.h:556 net/ipv4/ip_output.c:237)
[   18.381623][  T230]  ? ip_skb_dst_mtu (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 ./include/net/ip.h:504 ./include/net/ip.h:518)
[   18.381977][  T230]  ? ip_fragment.constprop.0 (net/ipv4/ip_output.c:201)
[   18.382315][  T230]  ? ip_skb_dst_mtu (./include/net/ip.h:523)
[   18.382667][  T230]  ? __ip_finish_output (./include/linux/skbuff.h:1724 ./include/linux/skbuff.h:5149 net/ipv4/ip_output.c:309)
[   18.382989][  T230]  ip_output (./include/linux/netfilter.h:414 net/ipv4/ip_output.c:438)
[   18.383297][  T230]  __ip_queue_xmit (./include/net/dst.h:464 net/ipv4/ip_output.c:131 net/ipv4/ip_output.c:534)
[   18.383637][  T230]  ? __skb_clone (./arch/x86/include/asm/atomic.h:53 (discriminator 4) ./include/linux/atomic/atomic-arch-fallback.h:992 (discriminator 4) ./include/linux/atomic/atomic-instrumented.h:436 (discriminator 4) net/core/skbuff.c:1585 (discriminator 4))
[   18.383982][  T230]  __tcp_transmit_skb (net/ipv4/tcp_output.c:1628)
[   18.384366][  T230]  ? __tcp_select_window (net/ipv4/tcp_output.c:1449)
[   18.384709][  T230]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   18.385054][  T230]  ? ktime_get (./include/linux/seqlock.h:74 kernel/time/timekeeping.c:824)
[   18.385401][  T230]  tcp_write_xmit (net/ipv4/tcp_output.c:2999)
[   18.385754][  T230]  ? zerocopy_fill_skb_from_iter (net/core/datagram.c:750)
[   18.386187][  T230]  ? tcp_retrans_try_collapse (net/ipv4/tcp_output.c:2903)
[   18.386549][  T230]  __tcp_push_pending_frames (net/ipv4/tcp_output.c:3182)
[   18.386894][  T230]  tcp_sendmsg_locked (net/ipv4/tcp.c:1375)
[   18.387249][  T230]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   18.387592][  T230]  ? tcp_sendmsg_fastopen (net/ipv4/tcp.c:1078)
[   18.387929][  T230]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   18.388276][  T230]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[   18.388626][  T230]  tcp_sendmsg (net/ipv4/tcp.c:1413)
[   18.388882][  T230]  __sys_sendto (net/socket.c:727 net/socket.c:742 net/socket.c:2244)
[   18.389229][  T230]  ? __ia32_sys_getpeername (net/socket.c:2211)
[   18.389576][  T230]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   18.389910][  T230]  ? fd_install (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:979 fs/file.c:676)
[   18.390258][  T230]  ? fput (./arch/x86/include/asm/preempt.h:104 ./include/linux/preempt.h:470 ./include/linux/file_ref.h:150 fs/file_table.c:544)
[   18.390517][  T230]  ? __sys_accept4 (./include/linux/file.h:63 ./include/linux/file.h:83 net/socket.c:2053)
[   18.390865][  T230]  ? fput (./arch/x86/include/asm/preempt.h:104 ./include/linux/preempt.h:470 ./include/linux/file_ref.h:150 fs/file_table.c:544)
[   18.391133][  T230]  ? do_accept (net/socket.c:2052)
[   18.391480][  T230]  ? vfs_writev (fs/read_write.c:1093)
[   18.391839][  T230]  __x64_sys_sendto (net/socket.c:2247)
[   18.392182][  T230]  ? do_syscall_64 (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 ./include/linux/entry-common.h:124 arch/x86/entry/syscall_64.c:90)
[   18.392529][  T230]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   18.392860][  T230]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   18.393208][  T230]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   18.393631][  T230] RIP: 0033:0x4929ee
[   18.393896][  T230] Code: 4c 24 1c e8 d4 50 04 00 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 1e 51 04 00 48 8b
All code
========
   0:	4c 24 1c             	rex.WR and $0x1c,%al
   3:	e8 d4 50 04 00       	call   0x450dc
   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 1e 51 04 00       	call   0x4515c
  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 1e 51 04 00       	call   0x45132
  14:	48                   	rex.W
  15:	8b                   	.byte 0x8b
[   18.395104][  T230] RSP: 002b:00007ffeb1dd2c00 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   18.395624][  T230] RAX: ffffffffffffffda RBX: 00007ffeb1dd31f0 RCX: 00000000004929ee
[   18.396140][  T230] RDX: 0000000000000001 RSI: 000000000690d590 RDI: 000000000000000a
[   18.396654][  T230] RBP: 00007ffeb1dd2c80 R08: 0000000000000000 R09: 0000000000000000
[   18.397163][  T230] R10: 0000000004000000 R11: 0000000000000246 R12: 0000000000000000


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