======================================
| [   18.108324][  T252] netdevsim netdevsim1337 eni1337np1: renamed from eth0
| [   18.254577][  T255] ------------[ cut here ]------------
| [   18.255234][  T255] kernel BUG at net/core/net-sysfs.c:2246!
| [   18.255794][  T255] Oops: invalid opcode: 0000 [#1] SMP KASAN
[   18.256508][  T255] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   18.256783][  T255] RIP: 0010:netdev_release (net/core/net-sysfs.c:2246 net/core/net-sysfs.c:2242)
[   18.257034][  T255] 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
[   18.257873][  T255] RSP: 0000:ffffc900006773c8 EFLAGS: 00010297
[   18.258162][  T255] RAX: 0000000000000000 RBX: ffff88800ab5a650 RCX: ffffffffb3302b51
[   18.258505][  T255] RDX: 1ffff1100156b4c6 RSI: ffffffffb365d540 RDI: ffff88800ab5a630
[   18.258823][  T255] RBP: ffff88800ab5a000 R08: 0000000000000001 R09: ffffed100156b4d1
[   18.259149][  T255] R10: ffff88800ab5a68b R11: ffffc900006770e8 R12: ffff888009214400
[   18.259500][  T255] R13: 0000000000000000 R14: dead000000000122 R15: dead000000000100
[   18.259824][  T255] FS:  00007fdb7c90b800(0000) GS:ffff888080e7c000(0000) knlGS:0000000000000000
[   18.260227][  T255] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   18.260505][  T255] CR2: 00007f8abb1092a4 CR3: 0000000005119002 CR4: 0000000000772ef0
[   18.260865][  T255] PKRU: 55555554
[   18.261035][  T255] Call Trace:
[   18.261202][  T255]  <TASK>
[   18.261331][  T255]  device_release (drivers/base/core.c:2570)
[   18.261659][  T255]  kobject_cleanup (lib/kobject.c:693)
[   18.261984][  T255]  netdev_run_todo (./include/linux/list.h:381 net/core/dev.c:11670)
[   18.262294][  T255]  ? kasan_quarantine_put (mm/kasan/quarantine.c:234 (discriminator 1))
[   18.262620][  T255]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   18.262943][  T255]  ? generic_xdp_install (net/core/dev.c:11630)
[   18.263291][  T255]  ? kfree (mm/slub.c:6630 mm/slub.c:6837)
[   18.263561][  T255] nsim_destroy (drivers/net/netdevsim/netdev.c:1186) netdevsim
[   18.263931][  T255] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:441 drivers/net/netdevsim/dev.c:1474) netdevsim
[   18.264364][  T255] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1483 drivers/net/netdevsim/dev.c:1707) netdevsim
[   18.264762][  T255] nsim_dev_reload_down (drivers/net/netdevsim/dev.c:984) netdevsim
[   18.265202][  T255]  devlink_reload (net/devlink/dev.c:462)
[   18.265536][  T255]  ? devlink_notify_unregister (net/devlink/dev.c:446)
[   18.265863][  T255]  ? ns_capable (./include/linux/security.h:695 kernel/capability.c:342 kernel/capability.c:363)
[   18.266131][  T255]  devlink_nl_reload_doit (net/devlink/dev.c:584)
[   18.266461][  T255]  ? devlink_reload (net/devlink/dev.c:520)
[   18.266712][  T255]  ? __nla_parse (lib/nlattr.c:732)
[   18.266987][  T255]  genl_family_rcv_msg_doit (net/netlink/genetlink.c:1117)
[   18.267232][  T255]  ? genl_family_rcv_msg_attrs_parse.constprop.0 (net/netlink/genetlink.c:1088)
[   18.267552][  T255]  ? is_bpf_text_address (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 kernel/bpf/core.c:746)
[   18.267772][  T255]  ? cap_capable (security/commoncap.c:132)
[   18.267988][  T255]  genl_family_rcv_msg (net/netlink/genetlink.c:1195)
[   18.268220][  T255]  ? genl_family_rcv_msg_dumpit (net/netlink/genetlink.c:1160)
[   18.268489][  T255]  ? devlink_nl_pre_doit_port (net/devlink/netlink.c:257)
[   18.268710][  T255]  ? devlink_reload (net/devlink/dev.c:520)
[   18.268923][  T255]  ? devlink_nl_post_doit (net/devlink/netlink.c:288)
[   18.269159][  T255]  genl_rcv_msg (net/netlink/genetlink.c:65 net/netlink/genetlink.c:1211)
[   18.269375][  T255]  netlink_rcv_skb (net/netlink/af_netlink.c:2550)
[   18.269584][  T255]  ? genl_family_rcv_msg (net/netlink/genetlink.c:1201)
[   18.269799][  T255]  ? netlink_ack (net/netlink/af_netlink.c:2527)
[   18.270029][  T255]  ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:897 net/netlink/af_netlink.c:340)
[   18.270243][  T255]  genl_rcv (net/netlink/genetlink.c:1220)
[   18.270406][  T255]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1344)
[   18.270620][  T255]  ? netlink_attachskb (net/netlink/af_netlink.c:1329)
[   18.270837][  T255]  ? __lock_acquire (kernel/locking/lockdep.c:5237)
[   18.271065][  T255]  netlink_sendmsg (net/netlink/af_netlink.c:1894)
[   18.271286][  T255]  ? netlink_unicast (net/netlink/af_netlink.c:1813)
[   18.271600][  T255]  ? __might_fault (mm/memory.c:7081 mm/memory.c:7075)
[   18.271916][  T255]  __sys_sendto (net/socket.c:727 net/socket.c:742 net/socket.c:2244)
[   18.272240][  T255]  ? __ia32_sys_getpeername (net/socket.c:2211)
[   18.272581][  T255]  ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751)
[   18.272923][  T255]  ? trace_rseq_update (./include/trace/events/rseq.h:11 (discriminator 21))
[   18.273265][  T255]  ? rseq_update_cpu_node_id (kernel/rseq.c:189 (discriminator 10))
[   18.273598][  T255]  ? __rseq_handle_notify_resume (kernel/rseq.c:442)
[   18.273970][  T255]  ? rseq_get_rseq_cs.isra.0 (kernel/rseq.c:425)
[   18.274308][  T255]  ? __ia32_sys_open (fs/open.c:1463)
[   18.274650][  T255]  __x64_sys_sendto (net/socket.c:2247)
[   18.274983][  T255]  ? 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)
[   18.275316][  T255]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[   18.275650][  T255]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[   18.275993][  T255]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   18.276413][  T255] RIP: 0033:0x7fdb7cad927a
[   18.276766][  T255] 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
[   18.277914][  T255] RSP: 002b:00007ffeb6e76078 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   18.278423][  T255] RAX: ffffffffffffffda RBX: 000000000df0ab20 RCX: 00007fdb7cad927a
[   18.278929][  T255] RDX: 0000000000000040 RSI: 000000000df0ab20 RDI: 0000000000000005
[   18.279289][  T255] RBP: 000000000df0a910 R08: 00007fdb7ccbd200 R09: 000000000000000c
[   18.279600][  T255] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000040f510


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