======================================
| [   13.969054][  T263] devlink (263) used greatest stack depth: 22784 bytes left
| [   18.705577][  T309] ------------[ cut here ]------------
| [   18.706377][  T309] kernel BUG at net/core/net-sysfs.c:2246!
| [   18.706962][  T309] Oops: invalid opcode: 0000 [#1] SMP KASAN
[   18.707663][  T309] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.707940][  T309] RIP: 0010:netdev_release (net/core/net-sysfs.c:2246 net/core/net-sysfs.c:2242)
[   18.708193][  T309] 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
[   18.708951][  T309] RSP: 0018:ffffc900006373c8 EFLAGS: 00010297
[   18.709201][  T309] RAX: 0000000000000000 RBX: ffff88800bb92650 RCX: ffffffffaf302b51
[   18.709524][  T309] RDX: 1ffff110017724c6 RSI: ffffffffaf65d540 RDI: ffff88800bb92630
[   18.709841][  T309] RBP: ffff88800bb92000 R08: 0000000000000001 R09: ffffed10017724d1
[   18.710132][  T309] R10: ffff88800bb9268b R11: ffffc900006370e8 R12: ffff888008c2c400
[   18.710455][  T309] R13: 0000000000000000 R14: dead000000000122 R15: dead000000000100
[   18.710819][  T309] FS:  00007f95df7e5800(0000) GS:ffff888084efc000(0000) knlGS:0000000000000000
[   18.711177][  T309] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   18.711459][  T309] CR2: 000000000041f330 CR3: 000000000a0ee001 CR4: 0000000000772ef0
[   18.711779][  T309] PKRU: 55555554
[   18.711960][  T309] Call Trace:
[   18.712115][  T309]  <TASK>
[   18.712240][  T309]  device_release (drivers/base/core.c:2570)
[   18.712472][  T309]  kobject_cleanup (lib/kobject.c:693)
[   18.712722][  T309]  netdev_run_todo (./include/linux/list.h:381 net/core/dev.c:11670)
[   18.712922][  T309]  ? kasan_quarantine_put (mm/kasan/quarantine.c:234 (discriminator 1))
[   18.713166][  T309]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   18.713384][  T309]  ? generic_xdp_install (net/core/dev.c:11630)
[   18.713592][  T309]  ? kfree (mm/slub.c:6630 mm/slub.c:6837)
[   18.713755][  T309] nsim_destroy (drivers/net/netdevsim/netdev.c:1186) netdevsim
[   18.713998][  T309] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:441 drivers/net/netdevsim/dev.c:1474) netdevsim
[   18.714268][  T309] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1483 drivers/net/netdevsim/dev.c:1707) netdevsim
[   18.714529][  T309] nsim_dev_reload_down (drivers/net/netdevsim/dev.c:984) netdevsim
[   18.714824][  T309]  devlink_reload (net/devlink/dev.c:462)
[   18.715030][  T309]  ? devlink_notify_unregister (net/devlink/dev.c:446)
[   18.715261][  T309]  ? devlink_resources_validate (net/devlink/resource.c:311)
[   18.715538][  T309]  devlink_nl_reload_doit (net/devlink/dev.c:584)
[   18.715766][  T309]  ? devlink_reload (net/devlink/dev.c:520)
[   18.716006][  T309]  ? __nla_parse (lib/nlattr.c:732)
[   18.716266][  T309]  genl_family_rcv_msg_doit (net/netlink/genetlink.c:1117)
[   18.716511][  T309]  ? genl_family_rcv_msg_attrs_parse.constprop.0 (net/netlink/genetlink.c:1088)
[   18.716835][  T309]  ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 kernel/bpf/core.c:746)
[   18.717102][  T309]  ? cap_capable (security/commoncap.c:132)
[   18.717309][  T309]  genl_family_rcv_msg (net/netlink/genetlink.c:1195)
[   18.717541][  T309]  ? genl_family_rcv_msg_dumpit (net/netlink/genetlink.c:1160)
[   18.717819][  T309]  ? devlink_nl_pre_doit_port (net/devlink/netlink.c:257)
[   18.718036][  T309]  ? devlink_reload (net/devlink/dev.c:520)
[   18.718259][  T309]  ? devlink_nl_post_doit (net/devlink/netlink.c:288)
[   18.718484][  T309]  genl_rcv_msg (net/netlink/genetlink.c:65 net/netlink/genetlink.c:1211)
[   18.718705][  T309]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   18.718913][  T309]  ? genl_family_rcv_msg (net/netlink/genetlink.c:1201)
[   18.719137][  T309]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   18.719353][  T309]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   18.719548][  T309]  genl_rcv (net/netlink/genetlink.c:1220)
[   18.719721][  T309]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   18.719936][  T309]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   18.720140][  T309]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   18.720511][  T309]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   18.720850][  T309]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   18.721222][  T309]  ? __might_fault (mm/memory.c:7081 mm/memory.c:7075)
[   18.721443][  T309]  __sys_sendto (net/socket.c:727 net/socket.c:742 net/socket.c:2244)
[   18.721701][  T309]  ? __ia32_sys_getpeername (net/socket.c:2211)
[   18.721919][  T309]  ? lock_vma_under_rcu (mm/mmap_lock.c:259)
[   18.722135][  T309]  ? find_held_lock (kernel/locking/lockdep.c:5350)
[   18.722356][  T309]  ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532)
[   18.722550][  T309]  ? __lock_release (kernel/locking/lockdep.c:5536)
[   18.722759][  T309]  ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532)
[   18.722978][  T309]  ? 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)
[   18.723207][  T309]  __x64_sys_sendto (net/socket.c:2247)
[   18.723419][  T309]  ? do_syscall_64 (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 ./include/linux/entry-common.h:124 arch/x86/entry/syscall_64.c:90)
[   18.723640][  T309]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   18.723831][  T309]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   18.724033][  T309]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   18.724331][  T309] RIP: 0033:0x7f95df9b327a
[   18.724547][  T309] 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
[   18.725484][  T309] RSP: 002b:00007ffc2083c7c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   18.725802][  T309] RAX: ffffffffffffffda RBX: 000000002b23cb20 RCX: 00007f95df9b327a
[   18.726309][  T309] RDX: 0000000000000034 RSI: 000000002b23cb20 RDI: 0000000000000005
[   18.726632][  T309] RBP: 000000002b23c910 R08: 00007f95dfb97200 R09: 000000000000000c
[   18.726964][  T309] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000040f510


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