======================================
| [   15.616091][  T263] netdevsim netdevsim440 eni440np1: renamed from eth0
| [   22.056106][  T254] ------------[ cut here ]------------
| [   22.056747][  T254] kernel BUG at net/core/net-sysfs.c:2246!
| [   22.057216][  T254] Oops: invalid opcode: 0000 [#1] SMP KASAN
[   22.057905][  T254] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.058190][  T254] RIP: 0010:netdev_release (net/core/net-sysfs.c:2246 net/core/net-sysfs.c:2242)
[   22.058429][  T254] Code: 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 20 48 8b bb b0 fa ff ff e8 9c 81 d1 fe 48 89 ef 5b 5d e9 62 8e d1 fe 90 <0f> 0b e8 0a 65 d8 fe eb bc e8 63 65 d8 fe eb d9 90 f3 0f 1e fa 0f
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 fc                	add    %bh,%ah
   4:	ff                   	lcall  (bad)
   5:	df 48 89             	fisttps -0x77(%rax)
   8:	fa                   	cli
   9:	48 c1 ea 03          	shr    $0x3,%rdx
   d:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
  11:	75 20                	jne    0x33
  13:	48 8b bb b0 fa ff ff 	mov    -0x550(%rbx),%rdi
  1a:	e8 9c 81 d1 fe       	call   0xfffffffffed181bb
  1f:	48 89 ef             	mov    %rbp,%rdi
  22:	5b                   	pop    %rbx
  23:	5d                   	pop    %rbp
  24:	e9 62 8e d1 fe       	jmp    0xfffffffffed18e8b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	e8 0a 65 d8 fe       	call   0xfffffffffed8653b
  31:	eb bc                	jmp    0xffffffffffffffef
  33:	e8 63 65 d8 fe       	call   0xfffffffffed8659b
  38:	eb d9                	jmp    0x13
  3a:	90                   	nop
  3b:	f3 0f 1e fa          	endbr64
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	e8 0a 65 d8 fe       	call   0xfffffffffed86511
   7:	eb bc                	jmp    0xffffffffffffffc5
   9:	e8 63 65 d8 fe       	call   0xfffffffffed86571
   e:	eb d9                	jmp    0xffffffffffffffe9
  10:	90                   	nop
  11:	f3 0f 1e fa          	endbr64
  15:	0f                   	.byte 0xf
[   22.059140][  T254] RSP: 0018:ffffc90000bd78a8 EFLAGS: 00010297
[   22.059403][  T254] RAX: 0000000000000000 RBX: ffff888005a1a688 RCX: ffffffffa457ab51
[   22.059716][  T254] RDX: 1ffff11000b434cc RSI: ffffffffa4a602c0 RDI: ffff888005a1a660
[   22.060023][  T254] RBP: ffff888005a1a000 R08: 0000000000000001 R09: ffffed1000b434d8
[   22.060339][  T254] R10: ffff888005a1a6c3 R11: ffffc90000bd75c8 R12: ffff888014de6200
[   22.060632][  T254] R13: 0000000000000000 R14: dead000000000122 R15: dead000000000100
[   22.060940][  T254] FS:  00007fe29ae6c000(0000) GS:ffff8880c6188000(0000) knlGS:0000000000000000
[   22.061296][  T254] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.061556][  T254] CR2: 0000559a4edfdbe0 CR3: 0000000010b4d002 CR4: 0000000000772ef0
[   22.061854][  T254] PKRU: 55555554
[   22.062028][  T254] Call Trace:
[   22.062179][  T254]  <TASK>
[   22.062286][  T254]  device_release (drivers/base/core.c:2570)
[   22.062495][  T254]  kobject_cleanup (lib/kobject.c:693)
[   22.062723][  T254]  netdev_run_todo (./include/linux/list.h:381 net/core/dev.c:11670)
[   22.062924][  T254]  ? kasan_quarantine_put (mm/kasan/quarantine.c:234 (discriminator 1))
[   22.063163][  T254]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   22.063368][  T254]  ? generic_xdp_install (net/core/dev.c:11630)
[   22.063576][  T254]  ? kfree (mm/slub.c:6630 mm/slub.c:6837)
[   22.063725][  T254] nsim_destroy (drivers/net/netdevsim/netdev.c:1186) netdevsim
[   22.063939][  T254] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:441 drivers/net/netdevsim/dev.c:1474) netdevsim
[   22.064211][  T254] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1483 drivers/net/netdevsim/dev.c:1707) netdevsim
[   22.064478][  T254] nsim_drv_remove (drivers/net/netdevsim/dev.c:1724) netdevsim
[   22.064679][  T254]  device_release_driver_internal (drivers/base/dd.c:1276 drivers/base/dd.c:1297)
[   22.064922][  T254]  ? klist_put (lib/klist.c:220)
[   22.065082][  T254]  bus_remove_device (./include/linux/kobject.h:193 drivers/base/base.h:73 drivers/base/bus.c:586)
[   22.065285][  T254]  device_del (drivers/base/core.c:3879)
[   22.065449][  T254]  ? __device_link_del (drivers/base/core.c:3833)
[   22.065649][  T254]  device_unregister (drivers/base/core.c:3796 drivers/base/core.c:3920)
[   22.065839][  T254] del_device_store (drivers/net/netdevsim/bus.c:248) netdevsim
[   22.066099][  T254]  ? nsim_bus_dev_numvfs_show (drivers/net/netdevsim/bus.c:215) netdevsim
[   22.066362][  T254]  ? sysfs_file_kobj (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 ./include/linux/rcupdate.h:1195 fs/sysfs/file.c:24)
[   22.066570][  T254]  ? sysfs_file_kobj (fs/sysfs/file.c:26)
[   22.066761][  T254]  ? sysfs_file_ops (fs/sysfs/file.c:135)
[   22.066963][  T254]  kernfs_fop_write_iter (fs/kernfs/file.c:88 fs/kernfs/file.c:356)
[   22.067173][  T254]  vfs_write (fs/read_write.c:594 fs/read_write.c:686)
[   22.067325][  T254]  ? kernel_write (fs/read_write.c:667)
[   22.067528][  T254]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   22.067735][  T254]  ksys_write (fs/read_write.c:738)
[   22.067881][  T254]  ? __ia32_sys_read (fs/read_write.c:728)
[   22.068089][  T254]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   22.068296][  T254]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   22.068544][  T254] RIP: 0033:0x7fe29af6c257
[   22.068750][  T254] 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
[   22.069471][  T254] RSP: 002b:00007ffcfc89d7e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   22.069773][  T254] RAX: ffffffffffffffda RBX: 00007fe29b068780 RCX: 00007fe29af6c257
[   22.070101][  T254] RDX: 0000000000000004 RSI: 0000559a4edfdbe0 RDI: 0000000000000001
[   22.070418][  T254] RBP: 0000000000000004 R08: 0000000000000000 R09: 00007fe29b01ed20
[   22.070711][  T254] R10: 00007fe29b01ec20 R11: 0000000000000246 R12: 0000000000000004


Finger prints:
netdev_release:device_release:kobject_cleanup:netdev_run_todo:nsim_destroy