======================================
| [    1.951610] netdevsim netdevsim1337 eni1337np1: renamed from eth0
| [    1.972845] ------------[ cut here ]------------
| [    1.972909] kernel BUG at net/core/net-sysfs.c:2246!
| [    1.972961] Oops: invalid opcode: 0000 [#1] SMP
[    1.973081] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    1.973131] RIP: 0010:netdev_release (net/core/net-sysfs.c:2246 net/core/net-sysfs.c:2242)
[    1.973206] Code: fa 0f 1f 44 00 00 80 7f e0 04 75 1d 55 48 8d af e0 fa ff ff 48 8b bf 10 fc ff ff e8 6d 99 a6 ff 48 89 ef 5d e9 24 a0 a6 ff 90 <0f> 0b 90 f3 0f 1e fa 0f 1f 44 00 00 55 48 89 f5 48 8d 97 f8 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 e0 fa ff ff 	lea    -0x520(%rdi),%rbp
  14:	48 8b bf 10 fc ff ff 	mov    -0x3f0(%rdi),%rdi
  1b:	e8 6d 99 a6 ff       	call   0xffffffffffa6998d
  20:	48 89 ef             	mov    %rbp,%rdi
  23:	5d                   	pop    %rbp
  24:	e9 24 a0 a6 ff       	jmp    0xffffffffffa6a04d
  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:	f8                   	clc
  3e:	fb                   	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:	f8                   	clc
  14:	fb                   	sti
  15:	ff                   	.byte 0xff
[    1.973318] RSP: 0018:ffffb9f5c059f948 EFLAGS: 00010297
[    1.973357] RAX: ffffffff8ff30c30 RBX: 00000000ffffffff RCX: 0000000000000003
[    1.973411] RDX: 0000000000000001 RSI: ffffffff8fd4f524 RDI: ffff9456813bc520
[    1.973469] RBP: ffff9456813bc520 R08: 0000000000000010 R09: 00000000000001e0
[    1.973521] R10: 000000000000023c R11: 00000000000001e0 R12: ffff945681ae3600
[    1.973600] R13: ffffffff902b1420 R14: ffff945682f61d60 R15: ffff9456813bc000
[    1.973653] FS:  00007f1ae1244800(0000) GS:ffff94572dbd9000(0000) knlGS:0000000000000000
[    1.973708] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    1.973754] CR2: 00007f1ae1360610 CR3: 0000000005153004 CR4: 0000000000772ef0
[    1.973808] PKRU: 55555554
[    1.973829] Call Trace:
[    1.973848]  <TASK>
[    1.973873]  device_release (drivers/base/core.c:2569)
[    1.973911]  kobject_put (lib/kobject.c:693 lib/kobject.c:720 ./include/linux/kref.h:65 lib/kobject.c:737)
[    1.973947]  netdev_run_todo (./include/linux/list.h:381 net/core/dev.c:11670)
[    1.973991] nsim_destroy (drivers/net/netdevsim/netdevsim.h:396 drivers/net/netdevsim/netdev.c:1186) netdevsim
[    1.974037] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:441 drivers/net/netdevsim/dev.c:1474) netdevsim
[    1.974075] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1483 drivers/net/netdevsim/dev.c:1707) netdevsim
[    1.974115] nsim_dev_reload_down (drivers/net/netdevsim/dev.c:984) netdevsim
[    1.974160]  devlink_reload (net/devlink/dev.c:462)
[    1.974193]  devlink_nl_reload_doit (net/devlink/dev.c:584)
[    1.974236]  genl_family_rcv_msg_doit (net/netlink/genetlink.c:1115)
[    1.974276]  genl_rcv_msg (net/netlink/genetlink.c:1195 net/netlink/genetlink.c:1210)
[    1.974314]  ? devlink_nl_pre_doit_port (net/devlink/netlink.c:257)
[    1.974353]  ? devlink_reload (net/devlink/dev.c:520)
[    1.974392]  ? devlink_nl_post_doit (net/devlink/netlink.c:288)
[    1.974437]  ? genl_family_rcv_msg_dumpit (net/netlink/genetlink.c:1201)
[    1.974480]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[    1.974508]  genl_rcv (net/netlink/genetlink.c:1220)
[    1.974538]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[    1.974569]  ? __alloc_skb (net/core/skbuff.c:690)
[    1.974604]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[    1.974634]  __sys_sendto (net/socket.c:727 net/socket.c:742 net/socket.c:2244)
[    1.974678]  ? do_sys_openat2 (fs/open.c:1447)
[    1.974710]  __x64_sys_sendto (net/socket.c:2251 net/socket.c:2247 net/socket.c:2247)
[    1.974741]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[    1.974777]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[    1.974819] RIP: 0033:0x7f1ae141227a
[    1.974865] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89
All code
========
   0:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   4:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   b:	eb b8                	jmp    0xffffffffffffffc5
   d:	0f 1f 00             	nopl   (%rax)
  10:	f3 0f 1e fa          	endbr64
  14:	41 89 ca             	mov    %ecx,%r10d
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 15                	jne    0x38
  23:	b8 2c 00 00 00       	mov    $0x2c,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 7e                	ja     0xb0
  32:	c3                   	ret
  33:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  38:	41 54                	push   %r12
  3a:	48 83 ec 30          	sub    $0x30,%rsp
  3e:	44                   	rex.R
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 7e                	ja     0x86
   8:	c3                   	ret
   9:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   e:	41 54                	push   %r12
  10:	48 83 ec 30          	sub    $0x30,%rsp
  14:	44                   	rex.R
  15:	89                   	.byte 0x89
[    1.975016] RSP: 002b:00007ffca1f648d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[    1.975081] RAX: ffffffffffffffda RBX: 000000003661cb20 RCX: 00007f1ae141227a
[    1.975139] RDX: 0000000000000040 RSI: 000000003661cb20 RDI: 0000000000000005
[    1.975213] RBP: 000000003661c910 R08: 00007f1ae15f6200 R09: 000000000000000c
[    1.975268] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000040f510


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