======================================
| xx__-> [    2.673208] netdevsim netdevsim10541 eni10541np1: renamed from eth0
| [   15.939078] ------------[ cut here ]------------
| [   15.939175] kernel BUG at net/core/net-sysfs.c:2246!
| [   15.939236] Oops: invalid opcode: 0000 [#1] SMP
[   15.939354] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   15.939405] RIP: 0010:netdev_release (net/core/net-sysfs.c:2246 net/core/net-sysfs.c:2242)
[   15.939459] Code: fa 0f 1f 44 00 00 80 7f e0 04 75 1d 55 48 8d af d8 fa ff ff 48 8b bf 08 fc ff ff e8 5d 4a a6 ff 48 89 ef 5d e9 14 51 a6 ff 90 <0f> 0b 90 f3 0f 1e fa 0f 1f 44 00 00 55 48 89 f5 48 8d 97 f0 fb ff
All code
========
   0:	fa                   	cli
   1:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   6:	80 7f e0 04          	cmpb   $0x4,-0x20(%rdi)
   a:	75 1d                	jne    0x29
   c:	55                   	push   %rbp
   d:	48 8d af d8 fa ff ff 	lea    -0x528(%rdi),%rbp
  14:	48 8b bf 08 fc ff ff 	mov    -0x3f8(%rdi),%rdi
  1b:	e8 5d 4a a6 ff       	call   0xffffffffffa64a7d
  20:	48 89 ef             	mov    %rbp,%rdi
  23:	5d                   	pop    %rbp
  24:	e9 14 51 a6 ff       	jmp    0xffffffffffa6513d
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	f3 0f 1e fa          	endbr64
  31:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  36:	55                   	push   %rbp
  37:	48 89 f5             	mov    %rsi,%rbp
  3a:	48                   	rex.W
  3b:	8d                   	.byte 0x8d
  3c:	97                   	xchg   %eax,%edi
  3d:	f0 fb                	lock sti
  3f:	ff                   	.byte 0xff

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	f3 0f 1e fa          	endbr64
   7:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   c:	55                   	push   %rbp
   d:	48 89 f5             	mov    %rsi,%rbp
  10:	48                   	rex.W
  11:	8d                   	.byte 0x8d
  12:	97                   	xchg   %eax,%edi
  13:	f0 fb                	lock sti
  15:	ff                   	.byte 0xff
[   15.939590] RSP: 0018:ffffa92dc05bfbf0 EFLAGS: 00010297
[   15.939634] RAX: ffffffff93f38130 RBX: 00000000ffffffff RCX: 0000000000000003
[   15.939692] RDX: 0000000000000001 RSI: ffffffff93d561a4 RDI: ffff91ad013bc528
[   15.939746] RBP: ffff91ad013bc528 R08: 00000000000001b0 R09: 0000000000000144
[   15.939800] R10: 0000000000000160 R11: 0000000000000150 R12: ffff91ad01adcc00
[   15.939854] R13: ffffffff942b1da0 R14: ffff91ad01077610 R15: ffff91ad013bc000
[   15.939920] FS:  00007fc10cd67740(0000) GS:ffff91ada97d6000(0000) knlGS:0000000000000000
[   15.939986] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   15.940043] CR2: 00007fc10d3f5190 CR3: 0000000004f6e003 CR4: 0000000000772ef0
[   15.940104] PKRU: 55555554
[   15.940127] Call Trace:
[   15.940147]  <TASK>
[   15.940168]  device_release (drivers/base/core.c:2569)
[   15.940217]  kobject_put (lib/kobject.c:693 lib/kobject.c:720 ./include/linux/kref.h:65 lib/kobject.c:737)
[   15.940255]  netdev_run_todo (./include/linux/list.h:381 net/core/dev.c:11670)
[   15.940296] nsim_destroy (drivers/net/netdevsim/netdevsim.h:396 drivers/net/netdevsim/netdev.c:1186) netdevsim
[   15.940345] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:441 drivers/net/netdevsim/dev.c:1474) netdevsim
[   15.940392] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1483 drivers/net/netdevsim/dev.c:1707) netdevsim
[   15.940436] nsim_drv_remove (drivers/net/netdevsim/dev.c:1724) netdevsim
[   15.940490]  device_release_driver_internal (drivers/base/dd.c:1276 drivers/base/dd.c:1297)
[   15.940536]  bus_remove_device (./include/linux/kobject.h:193 (discriminator 3) drivers/base/base.h:73 (discriminator 3) drivers/base/bus.c:586 (discriminator 3))
[   15.940569]  device_del (drivers/base/core.c:3879)
[   15.940603]  device_unregister (drivers/base/core.c:3796 drivers/base/core.c:3920)
[   15.940636] del_device_store (drivers/net/netdevsim/bus.c:248) netdevsim
[   15.940683]  kernfs_fop_write_iter (fs/kernfs/file.c:88 fs/kernfs/file.c:356)
[   15.940733]  vfs_write (fs/read_write.c:594 fs/read_write.c:686)
[   15.940771]  ksys_write (fs/read_write.c:738)
[   15.940805]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   15.940840]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   15.940886] RIP: 0033:0x7fc10cf46257
[   15.940918] 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
[   15.941050] RSP: 002b:00007ffefd3ce068 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   15.941110] RAX: ffffffffffffffda RBX: 00007fc10cd676e0 RCX: 00007fc10cf46257
[   15.941171] RDX: 0000000000000005 RSI: 000055f1a9c07680 RDI: 000000000000000a
[   15.941236] RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000002
[   15.941298] R10: 0000000000000002 R11: 0000000000000246 R12: 00007fc0fec37e80


Finger prints:
netdev_release:device_release:kobject_put:netdev_run_todo:nsim_destroy