======================================
| [   15.078845][  T253] netdevsim netdevsim1337 eni1337np2: renamed from eth0
| [  182.240740][  T229] ------------[ cut here ]------------
| [  182.241206][  T229] kernel BUG at net/core/net-sysfs.c:2246!
| [  182.241678][  T229] Oops: invalid opcode: 0000 [#1] SMP KASAN
[  182.242275][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  182.242525][  T229] RIP: 0010:netdev_release (net/core/net-sysfs.c:2246 net/core/net-sysfs.c:2242)
[  182.242736][  T229] Code: 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 20 48 8b bb e0 fa ff ff e8 8c f4 d7 fe 48 89 ef 5b 5d e9 52 01 d8 fe 90 <0f> 0b e8 fa d7 de fe eb bc e8 53 d8 de 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 e0 fa ff ff 	mov    -0x520(%rbx),%rdi
  1a:	e8 8c f4 d7 fe       	call   0xfffffffffed7f4ab
  1f:	48 89 ef             	mov    %rbp,%rdi
  22:	5b                   	pop    %rbx
  23:	5d                   	pop    %rbp
  24:	e9 52 01 d8 fe       	jmp    0xfffffffffed8017b
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	e8 fa d7 de fe       	call   0xfffffffffeded82b
  31:	eb bc                	jmp    0xffffffffffffffef
  33:	e8 53 d8 de fe       	call   0xfffffffffeded88b
  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 fa d7 de fe       	call   0xfffffffffeded801
   7:	eb bc                	jmp    0xffffffffffffffc5
   9:	e8 53 d8 de fe       	call   0xfffffffffeded861
   e:	eb d9                	jmp    0xffffffffffffffe9
  10:	90                   	nop
  11:	f3 0f 1e fa          	endbr64
  15:	0f                   	.byte 0xf
[  182.243383][  T229] RSP: 0018:ffffc90000ac7a60 EFLAGS: 00010297
[  182.243648][  T229] RAX: 0000000000000000 RBX: ffff888010bd2650 RCX: ffffffff91d02b51
[  182.243918][  T229] RDX: 1ffff1100217a4c6 RSI: ffffffff9205d540 RDI: ffff888010bd2630
[  182.244181][  T229] RBP: ffff888010bd2000 R08: 0000000000000001 R09: ffffed100217a4d1
[  182.244477][  T229] R10: ffff888010bd268b R11: ffffc90000ac7780 R12: ffff888004a43200
[  182.244749][  T229] R13: 0000000000000000 R14: dead000000000122 R15: dead000000000100
[  182.245026][  T229] FS:  00007f54a9515000(0000) GS:ffff8880a247c000(0000) knlGS:0000000000000000
[  182.245353][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  182.245595][  T229] CR2: 00007f54a96c7f73 CR3: 0000000010992001 CR4: 0000000000772ef0
[  182.245905][  T229] PKRU: 55555554
[  182.246041][  T229] Call Trace:
[  182.246180][  T229]  <TASK>
[  182.246269][  T229]  device_release (drivers/base/core.c:2570)
[  182.246482][  T229]  kobject_cleanup (lib/kobject.c:693)
[  182.246680][  T229]  netdev_run_todo (./include/linux/list.h:381 net/core/dev.c:11670)
[  182.246854][  T229]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  182.247033][  T229]  ? generic_xdp_install (net/core/dev.c:11630)
[  182.247222][  T229]  ? nsim_destroy (drivers/net/netdevsim/netdev.c:1024 drivers/net/netdevsim/netdev.c:1183) netdevsim
[  182.247439][  T229] nsim_destroy (drivers/net/netdevsim/netdev.c:1186) netdevsim
[  182.247650][  T229]  ? sysfs_file_ops (fs/sysfs/file.c:135)
[  182.247836][  T229] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:441 drivers/net/netdevsim/dev.c:1474) netdevsim
[  182.248063][  T229] nsim_drv_port_del (drivers/net/netdevsim/dev.c:1778) netdevsim
[  182.248285][  T229] del_port_store (drivers/net/netdevsim/bus.c:118) netdevsim
[  182.248491][  T229]  ? del_device_store (drivers/net/netdevsim/bus.c:106) netdevsim
[  182.248746][  T229]  ? sysfs_file_kobj (fs/sysfs/file.c:26)
[  182.248925][  T229]  ? sysfs_kf_write (fs/sysfs/file.c:139)
[  182.249108][  T229]  kernfs_fop_write_iter (fs/kernfs/file.c:88 fs/kernfs/file.c:356)
[  182.249286][  T229]  vfs_write (fs/read_write.c:594 fs/read_write.c:686)
[  182.249449][  T229]  ? kernel_write (fs/read_write.c:667)
[  182.249646][  T229]  ? lock_vma_under_rcu (mm/mmap_lock.c:259)
[  182.249836][  T229]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[  182.250017][  T229]  ksys_write (fs/read_write.c:738)
[  182.250147][  T229]  ? __ia32_sys_read (fs/read_write.c:728)
[  182.250342][  T229]  ? 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:143 ./include/linux/mmap_lock.h:182 arch/x86/mm/fault.c:1338)
[  182.250537][  T229]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  182.250739][  T229]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  182.250965][  T229] RIP: 0033:0x7f54a9615257
[  182.251160][  T229] 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
[  182.251845][  T229] RSP: 002b:00007ffe11edb098 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  182.252114][  T229] RAX: ffffffffffffffda RBX: 00007f54a9711780 RCX: 00007f54a9615257
[  182.252397][  T229] RDX: 0000000000000002 RSI: 00005592a722da70 RDI: 0000000000000001
[  182.252694][  T229] RBP: 0000000000000002 R08: 0000000000000000 R09: 00007f54a96c7d20
[  182.252973][  T229] R10: 00007f54a96c7c20 R11: 0000000000000246 R12: 0000000000000002


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