======================================
| 0
| xx__-> [  877.532299][ T4900] ------------[ cut here ]------------
| [  877.532897][ T4900] WARNING: CPU: 2 PID: 4900 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)
| [  877.533589][ T4900] Modules linked in: ts_kmp ts_bm xt_string sctp sch_netem cls_u32 sch_htb nf_conntrack_ftp ebtable_filter ebt_redirect ebt_ip ebtable_broute ebtables vxlan ip6_udp_tunnel udp_tunnel 8021q nft_synproxy nf_synproxy_core xt_REDIRECT xt_nat nft_nat nft_numgen nft_redir xt_conntrack nft_masq nft_chain_nat nf_nat nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib ip6t_rpfilter ipt_rpfilter xt_tcpudp nft_compat x_tables dummy nf_conntrack_netlink nfnetlink_queue nft_queue nft_ct br_netfilter tcp_diag nft_quota inet_diag nft_tproxy nf_tproxy_ipv6 nf_tproxy_ipv4 ipip ip_vs_rr bridge stp llc ip_vs nft_flow_offload nf_flow_table_inet nf_flow_table nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables veth
[  877.537964][ T4900] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  877.538833][ T4900] 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)
[  877.539188][ T4900] 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 7e 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 7e 0d 00 00    	jne    0xda0
  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
[  877.540325][ T4900] RSP: 0018:ffffc9000252f6a0 EFLAGS: 00010202
[  877.540746][ T4900] RAX: 0000000000000007 RBX: 0000000000000001 RCX: ffffffff8de1eef5
[  877.541239][ T4900] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888004d80f86
[  877.541733][ T4900] RBP: ffff888004d80f80 R08: ffff88800f357828 R09: ffffed10019dc0b3
[  877.542225][ T4900] R10: ffff88800cee059f R11: ffffc9000252f3b8 R12: ffff88800f357828
[  877.542701][ T4900] R13: ffff88800cee0400 R14: ffff88800cee0608 R15: ffff88800cee0400
[  877.543177][ T4900] FS:  00007fc1b34a1b80(0000) GS:ffff8880a00ec000(0000) knlGS:0000000000000000
[  877.543718][ T4900] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  877.544119][ T4900] CR2: 00007fc1b35f0f40 CR3: 0000000008dcb006 CR4: 0000000000772ef0
[  877.544600][ T4900] PKRU: 55555554
[  877.544852][ T4900] Call Trace:
[  877.545102][ T4900]  <TASK>
[  877.545281][ T4900]  ? dev_get_stats (net/core/dev.c:4143)
[  877.545614][ T4900]  __dev_queue_xmit (net/core/dev.c:4786)
[  877.545975][ T4900]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[  877.546318][ T4900]  ? netdev_core_pick_tx (net/core/dev.c:4728)
[  877.546639][ T4900]  ? eth_header (net/ethernet/eth.c:100)
[  877.546973][ T4900]  ? neigh_resolve_output (./include/linux/netdevice.h:3422 net/core/neighbour.c:1589 net/core/neighbour.c:1574)
[  877.547299][ T4900]  vrf_finish_output (./include/net/neighbour.h:556 drivers/net/vrf.c:848)
[  877.547620][ T4900]  ? vrf_output6 (drivers/net/vrf.c:821)
[  877.547942][ T4900]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  877.548260][ T4900]  ? vrf_output6 (drivers/net/vrf.c:821)
[  877.548583][ T4900]  ? vrf_output (./include/linux/netfilter.h:305 drivers/net/vrf.c:867)
[  877.548921][ T4900]  __ip_queue_xmit (./include/net/dst.h:464 net/ipv4/ip_output.c:131 net/ipv4/ip_output.c:534)
[  877.549251][ T4900]  ? __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))
[  877.549581][ T4900]  __tcp_transmit_skb (net/ipv4/tcp_output.c:1628)
[  877.549936][ T4900]  ? __tcp_select_window (net/ipv4/tcp_output.c:1449)
[  877.550276][ T4900]  tcp_connect (net/ipv4/tcp_output.c:1646 net/ipv4/tcp_output.c:4335)
[  877.550611][ T4900]  tcp_v4_connect (net/ipv4/tcp_ipv4.c:347)
[  877.550985][ T4900]  ? bpf_iter_init_tcp (net/ipv4/tcp_ipv4.c:225)
[  877.551310][ T4900]  ? do_raw_spin_lock (./arch/x86/include/asm/atomic.h:107 ./include/linux/atomic/atomic-arch-fallback.h:2170 ./include/linux/atomic/atomic-instrumented.h:1302 ./include/asm-generic/qspinlock.h:111 kernel/locking/spinlock_debug.c:116)
[  877.551639][ T4900]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  877.551992][ T4900]  __inet_stream_connect (net/ipv4/af_inet.c:679)
[  877.552324][ T4900]  ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:455)
[  877.552661][ T4900]  ? __inet_stream_connect (net/ipv4/af_inet.c:746)
[  877.552994][ T4900]  inet_stream_connect (net/ipv4/af_inet.c:751)
[  877.553333][ T4900]  __sys_connect (./include/linux/file.h:62 ./include/linux/file.h:83 net/socket.c:2111)
[  877.553665][ T4900]  ? __sys_connect_file (net/socket.c:2109)
[  877.553999][ T4900]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[  877.554336][ T4900]  ? trace_kfree (./include/trace/events/kmem.h:97 (discriminator 21))
[  877.554674][ T4900]  ? kfree (mm/slub.c:6826)
[  877.554941][ T4900]  ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532)
[  877.555273][ T4900]  ? __lock_release (kernel/locking/lockdep.c:5536)
[  877.555609][ T4900]  ? audit_reset_context.part.0.constprop.0 (./include/linux/list.h:381 kernel/auditsc.c:1025)
[  877.556059][ T4900]  __x64_sys_connect (net/socket.c:2124)
[  877.556387][ T4900]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  877.556723][ T4900]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  877.557145][ T4900] RIP: 0033:0x7fc1b35fdd67
[  877.557495][ T4900] Code: 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2a 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 18 89 54 24 0c 48 89 34 24 89
All code
========
   0:	64 89 01             	mov    %eax,%fs:(%rcx)
   3:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
   7:	c3                   	ret
   8:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 
  12:	90                   	nop
  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 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 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 18          	sub    $0x18,%rsp
  37:	89 54 24 0c          	mov    %edx,0xc(%rsp)
  3b:	48 89 34 24          	mov    %rsi,(%rsp)
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 18          	sub    $0x18,%rsp
   d:	89 54 24 0c          	mov    %edx,0xc(%rsp)
  11:	48 89 34 24          	mov    %rsi,(%rsp)
  15:	89                   	.byte 0x89
[  877.558632][ T4900] RSP: 002b:00007ffe123cba88 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
[  877.559136][ T4900] RAX: ffffffffffffffda RBX: 000055bcb74e0cf0 RCX: 00007fc1b35fdd67
[  877.559618][ T4900] RDX: 0000000000000010 RSI: 00007ffe123cc400 RDI: 0000000000000007
[  877.560110][ T4900] RBP: 00007ffe123cc400 R08: 00007ffe123cba90 R09: 0000000000000010
[  877.560597][ T4900] R10: 000000000000d903 R11: 0000000000000246 R12: 0000000000000010


Finger prints:
__dev_xmit_skb:__dev_queue_xmit:vrf_finish_output:__ip_queue_xmit:__tcp_transmit_skb