======================================
| 0
| xx__-> [ 4355.751847][ T9532] ------------[ cut here ]------------
| [ 4355.752440][ T9532] WARNING: CPU: 1 PID: 9532 at ./include/linux/skbuff.h:1164 ip_route_me_harder (./include/linux/skbuff.h:1164 ./include/linux/skbuff.h:1178 net/ipv4/netfilter.c:68) 
| [ 4355.753110][ T9532] Modules linked in: act_csum act_pedit cls_fw sch_ingress xt_statistic xt_length xt_bpf ipt_REJECT tcp_diag xt_mark nft_compat mptcp_diag inet_diag nft_tproxy nf_tproxy_ipv6 nf_tproxy_ipv4 nft_socket nf_socket_ipv4 nf_socket_ipv6 nf_tables sch_netem
[ 4355.755282][ T9532] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4355.755688][ T9532] RIP: 0010:ip_route_me_harder (./include/linux/skbuff.h:1164 ./include/linux/skbuff.h:1178 net/ipv4/netfilter.c:68) 
[ 4355.756104][ T9532] Code: 31 c9 e9 64 f8 ff ff 80 3c 02 00 0f 85 c0 06 00 00 48 8b 45 58 48 89 c6 48 83 e6 fe a8 01 0f 85 7c 03 00 00 48 85 f6 74 04 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c
All code
========
   0:	31 c9                	xor    %ecx,%ecx
   2:	e9 64 f8 ff ff       	jmp    0xfffffffffffff86b
   7:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   b:	0f 85 c0 06 00 00    	jne    0x6d1
  11:	48 8b 45 58          	mov    0x58(%rbp),%rax
  15:	48 89 c6             	mov    %rax,%rsi
  18:	48 83 e6 fe          	and    $0xfffffffffffffffe,%rsi
  1c:	a8 01                	test   $0x1,%al
  1e:	0f 85 7c 03 00 00    	jne    0x3a0
  24:	48 85 f6             	test   %rsi,%rsi
  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:	4c 89 ea             	mov    %r13,%rdx
  3a:	48 c1 ea 03          	shr    $0x3,%rdx
  3e:	80                   	.byte 0x80
  3f:	3c                   	.byte 0x3c

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:	4c 89 ea             	mov    %r13,%rdx
  10:	48 c1 ea 03          	shr    $0x3,%rdx
  14:	80                   	.byte 0x80
  15:	3c                   	.byte 0x3c
[ 4355.757240][ T9532] RSP: 0018:ffffc90007687288 EFLAGS: 00010282
[ 4355.757668][ T9532] RAX: ffff88801087a040 RBX: 1ffff92000ed0e57 RCX: 1ffff1100210f408
[ 4355.758150][ T9532] RDX: 1ffff110033f0137 RSI: ffff88801087a040 RDI: ffff88801ce4c0e0
[ 4355.758631][ T9532] RBP: ffff888019f80960 R08: 1ffff92000ed0e62 R09: ffff888019f809e1
[ 4355.759100][ T9532] R10: ffff88801087a083 R11: dffffc0000000000 R12: ffff8880179b0040
[ 4355.759572][ T9532] R13: ffff888019f809b8 R14: ffffc900076872e8 R15: ffff888020ab6840
[ 4355.760055][ T9532] FS:  00007fb8a2bdd740(0000) GS:ffff8880a20bb000(0000) knlGS:0000000000000000
[ 4355.760639][ T9532] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4355.761054][ T9532] CR2: 00007fb8a2cb9530 CR3: 0000000005b36001 CR4: 0000000000772ef0
[ 4355.761533][ T9532] PKRU: 55555554
[ 4355.761769][ T9532] Call Trace:
[ 4355.762006][ T9532]  <TASK>
[ 4355.762170][ T9532] ? __pfx_ip_route_me_harder (net/ipv4/netfilter.c:22) 
[ 4355.762813][ T9532] ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 kernel/bpf/core.c:774) 
[ 4355.763137][ T9532] ? is_bpf_text_address (kernel/bpf/core.c:777) 
[ 4355.763452][ T9532] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 4355.763774][ T9532] ? __kernel_text_address (kernel/extable.c:79) 
[ 4355.764082][ T9532] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 4355.764389][ T9532] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 4355.764786][ T9532] nf_route_table_hook4 (net/netfilter/nft_chain_route.c:47) nf_tables 
[ 4355.765221][ T9532] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 4355.765547][ T9532] ? __pfx_nf_route_table_hook4 (net/netfilter/nft_chain_route.c:19) nf_tables 
[ 4355.765967][ T9532] ? __pfx_nf_route_table_hook4 (net/netfilter/nft_chain_route.c:19) nf_tables 
[ 4355.766377][ T9532] nf_hook_slow (./include/linux/netfilter.h:157 net/netfilter/core.c:623) 
[ 4355.766700][ T9532] __ip_local_out (./include/linux/netfilter.h:272 net/ipv4/ip_output.c:118) 
[ 4355.767013][ T9532] ? __pfx___ip_local_out (net/ipv4/ip_output.c:101) 
[ 4355.767324][ T9532] ? __pfx_dst_output (./include/net/dst.h:460) 
[ 4355.767649][ T9532] __ip_queue_xmit (net/ipv4/ip_output.c:127 (discriminator 4) net/ipv4/ip_output.c:527 (discriminator 4)) 
[ 4355.767970][ T9532] ? __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:1566 (discriminator 4)) 
[ 4355.768283][ T9532] __tcp_transmit_skb (net/ipv4/tcp_output.c:1625 (discriminator 4)) 
[ 4355.768615][ T9532] ? __pfx___tcp_transmit_skb (net/ipv4/tcp_output.c:1446) 
[ 4355.768933][ T9532] ? tso_fragment (./arch/x86/include/asm/atomic.h:28 ./include/linux/atomic/atomic-arch-fallback.h:503 ./include/linux/atomic/atomic-instrumented.h:68 ./include/linux/skbuff.h:2060 net/ipv4/tcp_output.c:2351) 
[ 4355.769252][ T9532] tcp_write_xmit (net/ipv4/tcp_output.c:2984) 
[ 4355.769585][ T9532] ? __pfx_tcp_write_xmit (net/ipv4/tcp_output.c:2888) 
[ 4355.769895][ T9532] ? __pfx_mptcp_subflow_active (net/mptcp/protocol.c:1317) 
[ 4355.770215][ T9532] ? __subflow_push_pending (net/mptcp/protocol.h:415 net/mptcp/protocol.c:1462) 
[ 4355.770534][ T9532] __tcp_push_pending_frames (net/ipv4/tcp_output.c:3167) 
[ 4355.770850][ T9532] mptcp_push_release.isra.0 (net/mptcp/protocol.c:1416) 
[ 4355.771158][ T9532] __mptcp_push_pending (./include/linux/list.h:963 ./include/linux/timer.h:147 net/mptcp/protocol.c:845 net/mptcp/protocol.c:1558) 
[ 4355.771475][ T9532] ? __pfx___mptcp_push_pending (net/mptcp/protocol.c:1500) 
[ 4355.771805][ T9532] mptcp_sendmsg (net/mptcp/protocol.c:1846) 
[ 4355.772132][ T9532] ? __pfx_mptcp_sendmsg (net/mptcp/protocol.c:1728) 
[ 4355.772448][ T9532] ? __pfx_pollwake (fs/select.c:209) 
[ 4355.772769][ T9532] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 4355.773084][ T9532] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[ 4355.773396][ T9532] ? __pfx_sock_write_iter (net/socket.c:1163) 
[ 4355.773722][ T9532] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 4355.774038][ T9532] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[ 4355.774276][ T9532] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 4355.774602][ T9532] ? __pfx_timespec64_add_safe (kernel/time/time.c:848) 
[ 4355.774913][ T9532] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 4355.775223][ T9532] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:95 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[ 4355.775539][ T9532] ? ktime_get_ts64 (kernel/time/timekeeping.c:251 (discriminator 4) kernel/time/timekeeping.c:360 (discriminator 4) kernel/time/timekeeping.c:919 (discriminator 4)) 
[ 4355.775858][ T9532] ksys_write (fs/read_write.c:738) 
[ 4355.776088][ T9532] ? __x64_sys_poll (fs/select.c:1076 fs/select.c:1062 fs/select.c:1062) 
[ 4355.776404][ T9532] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 4355.776720][ T9532] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 4355.777043][ T9532] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 4355.777354][ T9532] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4355.777746][ T9532] RIP: 0033:0x7fb8a2cde337
[ 4355.778070][ T9532] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  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 01 00 00 00       	mov    $0x1,%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 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

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 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 4355.779190][ T9532] RSP: 002b:00007fff7e285478 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4355.779669][ T9532] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fb8a2cde337
[ 4355.780135][ T9532] RDX: 0000000000001f9c RSI: 00007fff7e2876a4 RDI: 0000000000000005
[ 4355.780609][ T9532] RBP: 0000000000001f9c R08: 00007fb8a2dd921c R09: 00007fb8a2dd9280
[ 4355.781085][ T9532] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff7e287640


Finger prints:
ip_route_me_harder:nf_route_table_hook4:nf_hook_slow:__ip_local_out:__ip_queue_xmit