======================================
| [   17.723899][  T268] ip (268) used greatest stack depth: 24304 bytes left
| [   19.389033][  T253] ------------[ cut here ]------------
| [   19.389600][  T253] kernel BUG at net/core/net-sysfs.c:2246!
| [   19.390109][  T253] Oops: invalid opcode: 0000 [#1] SMP KASAN
[   19.390693][  T253] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.390931][  T253] RIP: 0010:netdev_release (net/core/net-sysfs.c:2246 net/core/net-sysfs.c:2242)
[   19.391142][  T253] 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
[   19.391807][  T253] RSP: 0018:ffffc90000b378a8 EFLAGS: 00010297
[   19.392055][  T253] RAX: 0000000000000000 RBX: ffff888005a72688 RCX: ffffffffa137ab51
[   19.392338][  T253] RDX: 1ffff11000b4e4cc RSI: ffffffffa18602c0 RDI: ffff888005a72660
[   19.392624][  T253] RBP: ffff888005a72000 R08: 0000000000000001 R09: ffffed1000b4e4d8
[   19.392912][  T253] R10: ffff888005a726c3 R11: ffffc90000b375c8 R12: ffff88800e28f400
[   19.393203][  T253] R13: 0000000000000000 R14: dead000000000122 R15: dead000000000100
[   19.393488][  T253] FS:  00007fd936d73740(0000) GS:ffff8880c9488000(0000) knlGS:0000000000000000
[   19.393822][  T253] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.394080][  T253] CR2: 00007fd929298b20 CR3: 00000000023f6003 CR4: 0000000000772ef0
[   19.394369][  T253] PKRU: 55555554
[   19.394510][  T253] Call Trace:
[   19.394650][  T253]  <TASK>
[   19.394755][  T253]  device_release (drivers/base/core.c:2570)
[   19.394951][  T253]  kobject_cleanup (lib/kobject.c:693)
[   19.395153][  T253]  netdev_run_todo (./include/linux/list.h:381 net/core/dev.c:11670)
[   19.395344][  T253]  ? kasan_quarantine_put (mm/kasan/quarantine.c:234 (discriminator 1))
[   19.395566][  T253]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   19.395761][  T253]  ? generic_xdp_install (net/core/dev.c:11630)
[   19.395959][  T253]  ? kfree (mm/slub.c:6630 mm/slub.c:6837)
[   19.396132][  T253] nsim_destroy (drivers/net/netdevsim/netdev.c:1186) netdevsim
[   19.396334][  T253] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:441 drivers/net/netdevsim/dev.c:1474) netdevsim
[   19.396592][  T253] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1483 drivers/net/netdevsim/dev.c:1707) netdevsim
[   19.396884][  T253] nsim_drv_remove (drivers/net/netdevsim/dev.c:1724) netdevsim
[   19.397092][  T253]  device_release_driver_internal (drivers/base/dd.c:1276 drivers/base/dd.c:1297)
[   19.397331][  T253]  ? klist_put (lib/klist.c:220)
[   19.397479][  T253]  bus_remove_device (./include/linux/kobject.h:193 drivers/base/base.h:73 drivers/base/bus.c:586)
[   19.397673][  T253]  device_del (drivers/base/core.c:3879)
[   19.397817][  T253]  ? __device_link_del (drivers/base/core.c:3833)
[   19.398013][  T253]  device_unregister (drivers/base/core.c:3796 drivers/base/core.c:3920)
[   19.398200][  T253] del_device_store (drivers/net/netdevsim/bus.c:248) netdevsim
[   19.398441][  T253]  ? nsim_bus_dev_numvfs_show (drivers/net/netdevsim/bus.c:215) netdevsim
[   19.398679][  T253]  ? sysfs_file_kobj (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 ./include/linux/rcupdate.h:1195 fs/sysfs/file.c:24)
[   19.398870][  T253]  ? sysfs_file_kobj (fs/sysfs/file.c:26)
[   19.399069][  T253]  ? sysfs_file_ops (fs/sysfs/file.c:135)
[   19.399254][  T253]  kernfs_fop_write_iter (fs/kernfs/file.c:88 fs/kernfs/file.c:356)
[   19.399441][  T253]  vfs_write (fs/read_write.c:594 fs/read_write.c:686)
[   19.399583][  T253]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   19.399770][  T253]  ? kernel_write (fs/read_write.c:667)
[   19.399959][  T253]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   19.400154][  T253]  ? kernfs_fop_llseek (fs/kernfs/file.c:910)
[   19.400342][  T253]  ? _mutex_trylock_nest_lock (kernel/locking/mutex.c:916)
[   19.400534][  T253]  ksys_write (fs/read_write.c:738)
[   19.400675][  T253]  ? __ia32_sys_read (fs/read_write.c:728)
[   19.400859][  T253]  ? kernfs_fop_llseek (fs/kernfs/file.c:910)
[   19.401052][  T253]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   19.401237][  T253]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   19.401467][  T253] RIP: 0033:0x7fd936f52257
[   19.401662][  T253] 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
[   19.402328][  T253] RSP: 002b:00007ffcaf5b7148 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   19.402611][  T253] RAX: ffffffffffffffda RBX: 00007fd936d736e0 RCX: 00007fd936f52257
[   19.402891][  T253] RDX: 0000000000000005 RSI: 00005644836784c0 RDI: 0000000000000006
[   19.403178][  T253] RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000002
[   19.403458][  T253] R10: 0000000000000002 R11: 0000000000000246 R12: 00007fd928c4c880


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