======================================
| xx__-> [    2.279535] ------------[ cut here ]------------
| [    2.279591] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#1: ethtool-pause.s/160
| [    2.279655] Modules linked in: netdevsim
| [    2.279726] Tainted: [W]=WARN
[    2.279749] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.279784] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.279816] Code: 80 00 00 00 e8 09 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 56 a6 fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	09 d9                	or     %ebx,%ecx
   7:	ff                   	(bad)
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 56 a6 fb ff       	call   0xfffffffffffba692
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 56 a6 fb ff       	call   0xfffffffffffba668
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    2.279906] RSP: 0018:ff6eb7ef403f79d0 EFLAGS: 00010286
[    2.279940] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.279989] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff4062318310fd00
[    2.280033] RBP: 0000000000000000 R08: ff40623183365110 R09: ff40623181e55030
[    2.280074] R10: ff4062318198a118 R11: fefefefefefefeff R12: 0000000000000000
[    2.280116] R13: 0000000000000010 R14: ff4062318198a000 R15: ff4062318310fd00
[    2.280160] FS:  00007f5980d6db80(0000) GS:ff406232190da000(0000) knlGS:0000000000000000
[    2.280206] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.280242] CR2: 000055ff0cf70f88 CR3: 0000000003243002 CR4: 0000000000771ef0
[    2.280277] PKRU: 55555554
[    2.280291] Call Trace:
[    2.280308]  <TASK>
[    2.280325]  rtmsg_ifinfo (net/core/rtnetlink.c:4551 net/core/rtnetlink.c:4541 net/core/rtnetlink.c:4560)
[    2.280348]  register_netdevice (net/core/dev.c:11488)
[    2.280372] nsim_create (drivers/net/netdevsim/netdev.c:1069 drivers/net/netdevsim/netdev.c:1151) netdevsim
[    2.280406] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1509) netdevsim
[    2.280436] nsim_drv_probe (drivers/net/netdevsim/dev.c:1570 drivers/net/netdevsim/dev.c:1731) netdevsim
[    2.280467]  really_probe (drivers/base/dd.c:631 drivers/base/dd.c:709)
[    2.280491]  ? driver_probe_device (./include/linux/list.h:164 (discriminator 3))
[    2.280517]  __driver_probe_device (drivers/base/dd.c:871)
[    2.280552]  driver_probe_device (drivers/base/dd.c:901)
[    2.280575]  __device_attach_driver (drivers/base/dd.c:1029)
[    2.280604]  bus_for_each_drv (drivers/base/bus.c:500)
[    2.280625]  __device_attach (drivers/base/dd.c:1101)
[    2.280646]  device_initial_probe (drivers/base/dd.c:1156)
[    2.280668]  bus_probe_device (drivers/base/bus.c:613)
[    2.280689]  device_add (drivers/base/core.c:3706)
[    2.280708] new_device_store (drivers/net/netdevsim/bus.c:471 drivers/net/netdevsim/bus.c:191) netdevsim
[    2.280738]  kernfs_fop_write_iter (fs/kernfs/file.c:352)
[    2.280770]  vfs_write (fs/read_write.c:595 fs/read_write.c:688)
[    2.280793]  ksys_write (fs/read_write.c:740)
[    2.280817]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.280843]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.280869] RIP: 0033:0x7f5980ddf08e
[    2.280892] Code: 4d 89 d8 e8 94 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 94 bd 00 00       	call   0xbd9c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[    2.281005] RSP: 002b:00007fff6cb6a2c0 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[    2.281046] RAX: ffffffffffffffda RBX: 00007f5980f61580 RCX: 00007f5980ddf08e
[    2.281082] RDX: 0000000000000004 RSI: 000055ff0cf6ff80 RDI: 0000000000000001
[    2.281125] RBP: 00007fff6cb6a2d0 R08: 0000000000000000 R09: 0000000000000000
[    2.281167] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004
[    2.281207] R13: 0000000000000004 R14: 000055ff0cf6ff80 R15: 0000000000000000
| [    2.314464] ------------[ cut here ]------------
| [    2.314551] WARNING: net/core/rtnetlink.c:4523 at rtmsg_ifinfo_build_skb+0xc8/0x110, CPU#2: ethtool-pause.s/157
| [    2.314656] Modules linked in: netdevsim
| [    2.314838] Tainted: [W]=WARN
[    2.314903] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    2.315008] RIP: 0010:rtmsg_ifinfo_build_skb (net/core/rtnetlink.c:4523 (discriminator 3))
[    2.315081] Code: 80 00 00 00 e8 09 d9 ff ff 48 83 c4 38 85 c0 75 18 48 83 c4 08 4c 89 f8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 44 8b 48 08 eb b4 90 <0f> 0b 90 ba 02 00 00 00 4c 89 fe 31 ff e8 56 a6 fb ff b9 a6 ff ff
All code
========
   0:	80 00 00             	addb   $0x0,(%rax)
   3:	00 e8                	add    %ch,%al
   5:	09 d9                	or     %ebx,%ecx
   7:	ff                   	(bad)
   8:	ff 48 83             	decl   -0x7d(%rax)
   b:	c4                   	(bad)
   c:	38 85 c0 75 18 48    	cmp    %al,0x481875c0(%rbp)
  12:	83 c4 08             	add    $0x8,%esp
  15:	4c 89 f8             	mov    %r15,%rax
  18:	5b                   	pop    %rbx
  19:	5d                   	pop    %rbp
  1a:	41 5c                	pop    %r12
  1c:	41 5d                	pop    %r13
  1e:	41 5e                	pop    %r14
  20:	41 5f                	pop    %r15
  22:	c3                   	ret
  23:	44 8b 48 08          	mov    0x8(%rax),%r9d
  27:	eb b4                	jmp    0xffffffffffffffdd
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	ba 02 00 00 00       	mov    $0x2,%edx
  32:	4c 89 fe             	mov    %r15,%rsi
  35:	31 ff                	xor    %edi,%edi
  37:	e8 56 a6 fb ff       	call   0xfffffffffffba692
  3c:	b9                   	.byte 0xb9
  3d:	a6                   	cmpsb  (%rdi),(%rsi)
  3e:	ff                   	(bad)
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	ba 02 00 00 00       	mov    $0x2,%edx
   8:	4c 89 fe             	mov    %r15,%rsi
   b:	31 ff                	xor    %edi,%edi
   d:	e8 56 a6 fb ff       	call   0xfffffffffffba668
  12:	b9                   	.byte 0xb9
  13:	a6                   	cmpsb  (%rdi),(%rsi)
  14:	ff                   	(bad)
  15:	ff                   	.byte 0xff
[    2.315234] RSP: 0018:ff6eb7ef403dfb88 EFLAGS: 00010286
[    2.315316] RAX: 00000000ffffffa6 RBX: 00000000ffffffff RCX: 0000000000000000
[    2.315391] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ff406231830b4c00
[    2.315484] RBP: 0000000000000000 R08: ff40623183365110 R09: ff40623183060830
[    2.315568] R10: ff4062318198a118 R11: fefefefefefefeff R12: 0000000000000000
[    2.315656] R13: 0000000000000011 R14: ff4062318198a000 R15: ff406231830b4c00
[    2.315752] FS:  00007f5980d6db80(0000) GS:ff4062321915a000(0000) knlGS:0000000000000000
[    2.315859] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.315940] CR2: 000055fef752d620 CR3: 0000000004a02003 CR4: 0000000000771ef0
[    2.316028] PKRU: 55555554
[    2.316076] Call Trace:
[    2.316125]  <TASK>
[    2.316173]  unregister_netdevice_many_notify (net/core/dev.c:12439)
[    2.316239]  unregister_netdevice_queue (net/core/dev.c:12497 net/core/dev.c:12309)
[    2.316303] nsim_destroy (./include/linux/netdevice.h:3455 drivers/net/netdevsim/netdev.c:1193) netdevsim
[    2.316368] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:1547) netdevsim
[    2.316435] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1561 drivers/net/netdevsim/dev.c:1785) netdevsim
[    2.316500] nsim_drv_remove (drivers/net/netdevsim/dev.c:1800) netdevsim
[    2.316565]  device_release_driver_internal (drivers/base/dd.c:1352 drivers/base/dd.c:1375)
[    2.316632]  bus_remove_device (drivers/base/bus.c:657)
[    2.316688]  ? device_remove_attrs (drivers/base/core.c:2844 drivers/base/core.c:2977)
[    2.316753]  device_del (drivers/base/core.c:3895)
[    2.316810]  device_unregister (drivers/base/core.c:3936)
[    2.316866] del_device_store (drivers/net/netdevsim/bus.c:491 drivers/net/netdevsim/bus.c:244) netdevsim
[    2.316936]  kernfs_fop_write_iter (fs/kernfs/file.c:352)
[    2.317007]  vfs_write (fs/read_write.c:595 fs/read_write.c:688)
[    2.317066]  ksys_write (fs/read_write.c:740)
[    2.317123]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    2.317181]  ? __sysvec_call_function_single (arch/x86/kernel/smp.c:272)
[    2.317247]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    2.317310] RIP: 0033:0x7f5980ddf08e
[    2.317366] Code: 4d 89 d8 e8 94 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 94 bd 00 00       	call   0xbd9c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[    2.317499] RSP: 002b:00007fff6cb6a620 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[    2.317575] RAX: ffffffffffffffda RBX: 00007f5980f61580 RCX: 00007f5980ddf08e
[    2.317653] RDX: 0000000000000004 RSI: 000055ff0cf6ea50 RDI: 0000000000000001
[    2.317729] RBP: 00007fff6cb6a630 R08: 0000000000000000 R09: 0000000000000000
[    2.317804] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004


Finger prints:
rtmsg_ifinfo_build_skb:unregister_netdevice_many_notify:unregister_netdevice_queue:nsim_destroy:__nsim_dev_port_del
rtmsg_ifinfo_build_skb:rtmsg_ifinfo:register_netdevice:nsim_create:__nsim_dev_port_add