======================================
| [   24.299295][   T66] netdevsim netdevsim854 eni854np2: unset [1, 0] type 2 family 0 port 6081 - 0
| [   24.860700][  T395] ------------[ cut here ]------------
| [   24.861041][  T395] WARNING: drivers/net/netdevsim/netdev.c:1234 at nsim_destroy+0x128/0x7b0 [netdevsim], CPU#2: modprobe/395
| [   24.861428][  T395] Modules linked in: netdevsim(-) [last unloaded: ip6_udp_tunnel]
[   24.862077][  T395] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   24.862309][  T395] RIP: 0010:nsim_destroy (drivers/net/netdevsim/netdev.c:1234 (discriminator 2)) netdevsim
[   24.862551][  T395] Code: 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 0f 85 47 06 00 00 48 8b 3b e8 84 17 cc dd 31 c0 48 8d ab 48 07 00 00 eb 07 90 <0f> 0b 90 83 c0 01 0f b7 d0 be 00 10 00 00 48 89 ef e8 e2 22 10 dd
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	00 fc                	add    %bh,%ah
   6:	ff                   	lcall  (bad)
   7:	df 48 c1             	fisttps -0x3f(%rax)
   a:	e9 03 80 3c 01       	jmp    0x13c8012
   f:	00 0f                	add    %cl,(%rdi)
  11:	85 47 06             	test   %eax,0x6(%rdi)
  14:	00 00                	add    %al,(%rax)
  16:	48 8b 3b             	mov    (%rbx),%rdi
  19:	e8 84 17 cc dd       	call   0xffffffffddcc17a2
  1e:	31 c0                	xor    %eax,%eax
  20:	48 8d ab 48 07 00 00 	lea    0x748(%rbx),%rbp
  27:	eb 07                	jmp    0x30
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	83 c0 01             	add    $0x1,%eax
  30:	0f b7 d0             	movzwl %ax,%edx
  33:	be 00 10 00 00       	mov    $0x1000,%esi
  38:	48 89 ef             	mov    %rbp,%rdi
  3b:	e8 e2 22 10 dd       	call   0xffffffffdd102322

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	83 c0 01             	add    $0x1,%eax
   6:	0f b7 d0             	movzwl %ax,%edx
   9:	be 00 10 00 00       	mov    $0x1000,%esi
   e:	48 89 ef             	mov    %rbp,%rdi
  11:	e8 e2 22 10 dd       	call   0xffffffffdd1022f8
[   24.863138][  T395] RSP: 0018:ffa0000000637b58 EFLAGS: 00010293
[   24.863371][  T395] RAX: 0000000000000000 RBX: ff1100000beead00 RCX: ff1100000beeb448
[   24.863636][  T395] RDX: 0000000000000000 RSI: 0000000000000000 RDI: dffffc0000000000
[   24.863921][  T395] RBP: ff1100000beeb448 R08: ff1100000beeb448 R09: 0000000000000000
[   24.864201][  T395] R10: 1fe22000017dd689 R11: 0000000000000001 R12: ff1100000c886c98
[   24.864467][  T395] R13: dffffc0000000000 R14: ff1100000c886800 R15: ffffffffc04c9380
[   24.864748][  T395] FS:  00007fe1e7795bc0(0000) GS:ff11000094785000(0000) knlGS:0000000000000000
[   24.865076][  T395] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.865307][  T395] CR2: 00007fe1e777c000 CR3: 0000000011027004 CR4: 0000000000771ef0
[   24.865572][  T395] PKRU: 55555554
[   24.865737][  T395] Call Trace:
[   24.865894][  T395]  <TASK>
[   24.866032][  T395]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:752 (discriminator 1))
[   24.866232][  T395] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:444 drivers/net/netdevsim/dev.c:1529) netdevsim
[   24.866463][  T395]  ? devl_lock_is_held (net/devlink/core.c:285 (discriminator 1))
[   24.866695][  T395] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1538 (discriminator 4) drivers/net/netdevsim/dev.c:1764 (discriminator 4)) netdevsim
[   24.867560][  T395] nsim_drv_remove (drivers/net/netdevsim/dev.c:1781) netdevsim
[   24.867817][  T395]  device_release_driver_internal (drivers/base/dd.c:1286 drivers/base/dd.c:1307)
[   24.868155][  T395]  bus_remove_device (./include/linux/kobject.h:193 drivers/base/base.h:73 drivers/base/bus.c:623)
[   24.868441][  T395]  device_del (drivers/base/core.c:3879)
[   24.868675][  T395]  ? __device_link_del (drivers/base/core.c:3833)
[   24.868986][  T395]  device_unregister (drivers/base/core.c:3796 drivers/base/core.c:3920)
[   24.869277][  T395] nsim_bus_exit (drivers/net/netdevsim/bus.c:530 (discriminator 4)) netdevsim
[   24.869573][  T395] nsim_module_exit (drivers/net/netdevsim/netdev.c:1290) netdevsim
[   24.869914][  T395]  __do_sys_delete_module (kernel/module/main.c:836)
[   24.870227][  T395]  ? module_flags (kernel/module/main.c:778)
[   24.870509][  T395]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473)
[   24.870799][  T395]  ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   24.871110][  T395]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:752 (discriminator 1))
[   24.871398][  T395]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[   24.871680][  T395]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   24.871980][  T395]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   24.872324][  T395] RIP: 0033:0x7fe1e788d37b
[   24.872618][  T395] Code: 73 01 c3 48 8b 0d 85 2a 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 b0 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 55 2a 0f 00 f7 d8 64 89 01 48
All code
========
   0:	73 01                	jae    0x3
   2:	c3                   	ret
   3:	48 8b 0d 85 2a 0f 00 	mov    0xf2a85(%rip),%rcx        # 0xf2a8f
   a:	f7 d8                	neg    %eax
   c:	64 89 01             	mov    %eax,%fs:(%rcx)
   f:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
  13:	c3                   	ret
  14:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  1b:	00 00 00 
  1e:	90                   	nop
  1f:	f3 0f 1e fa          	endbr64
  23:	b8 b0 00 00 00       	mov    $0xb0,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax		<-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	ret
  33:	48 8b 0d 55 2a 0f 00 	mov    0xf2a55(%rip),%rcx        # 0xf2a8f
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   6:	73 01                	jae    0x9
   8:	c3                   	ret
   9:	48 8b 0d 55 2a 0f 00 	mov    0xf2a55(%rip),%rcx        # 0xf2a65
  10:	f7 d8                	neg    %eax
  12:	64 89 01             	mov    %eax,%fs:(%rcx)
  15:	48                   	rex.W
[   24.873475][  T395] RSP: 002b:00007ffe7f272398 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0
[   24.873876][  T395] RAX: ffffffffffffffda RBX: 00005564af566a10 RCX: 00007fe1e788d37b
[   24.874287][  T395] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 00005564af566a70
[   24.874671][  T395] RBP: 00007ffe7f2723c0 R08: 0000000000000000 R09: 0000000000000000
[   24.875066][  T395] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
[   24.875450][  T395] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
| [   32.389807][  T197] ------------[ cut here ]------------
| [   32.390141][  T197] WARNING: drivers/net/netdevsim/netdev.c:1234 at nsim_destroy+0x128/0x7b0 [netdevsim], CPU#2: udp_tunnel_nic./197
| [   32.390722][  T197] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   32.391491][  T197] Tainted: [W]=WARN
[   32.391665][  T197] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.391997][  T197] RIP: 0010:nsim_destroy (drivers/net/netdevsim/netdev.c:1234 (discriminator 2)) netdevsim
[   32.392279][  T197] Code: 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 0f 85 47 06 00 00 48 8b 3b e8 84 17 cc dd 31 c0 48 8d ab 48 07 00 00 eb 07 90 <0f> 0b 90 83 c0 01 0f b7 d0 be 00 10 00 00 48 89 ef e8 e2 22 10 dd
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	00 fc                	add    %bh,%ah
   6:	ff                   	lcall  (bad)
   7:	df 48 c1             	fisttps -0x3f(%rax)
   a:	e9 03 80 3c 01       	jmp    0x13c8012
   f:	00 0f                	add    %cl,(%rdi)
  11:	85 47 06             	test   %eax,0x6(%rdi)
  14:	00 00                	add    %al,(%rax)
  16:	48 8b 3b             	mov    (%rbx),%rdi
  19:	e8 84 17 cc dd       	call   0xffffffffddcc17a2
  1e:	31 c0                	xor    %eax,%eax
  20:	48 8d ab 48 07 00 00 	lea    0x748(%rbx),%rbp
  27:	eb 07                	jmp    0x30
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	83 c0 01             	add    $0x1,%eax
  30:	0f b7 d0             	movzwl %ax,%edx
  33:	be 00 10 00 00       	mov    $0x1000,%esi
  38:	48 89 ef             	mov    %rbp,%rdi
  3b:	e8 e2 22 10 dd       	call   0xffffffffdd102322

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	83 c0 01             	add    $0x1,%eax
   6:	0f b7 d0             	movzwl %ax,%edx
   9:	be 00 10 00 00       	mov    $0x1000,%esi
   e:	48 89 ef             	mov    %rbp,%rdi
  11:	e8 e2 22 10 dd       	call   0xffffffffdd1022f8
[   32.392835][  T197] RSP: 0018:ffa0000000917b70 EFLAGS: 00010293
[   32.393078][  T197] RAX: 0000000000000000 RBX: ff1100000af22d00 RCX: ff1100000af23448
[   32.393338][  T197] RDX: 0000000000000000 RSI: 0000000000000000 RDI: dffffc0000000000
[   32.393590][  T197] RBP: ff1100000af23448 R08: ff1100000af23448 R09: 0000000000000000
[   32.393855][  T197] R10: 1fe22000015e4689 R11: 0000000000000001 R12: dffffc0000000000
[   32.394128][  T197] R13: ff1100000c951558 R14: 0000000000000002 R15: ffffffff9d34fcc0
[   32.394390][  T197] FS:  00007f3467b92bc0(0000) GS:ff11000094785000(0000) knlGS:0000000000000000
[   32.394683][  T197] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.394915][  T197] CR2: 00007ffdadf76058 CR3: 000000000bdb6003 CR4: 0000000000771ef0
[   32.395194][  T197] PKRU: 55555554
[   32.395366][  T197] Call Trace:
[   32.395514][  T197]  <TASK>
[   32.395632][  T197]  ? sysfs_file_ops (fs/sysfs/file.c:135)
[   32.395834][  T197] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:444 drivers/net/netdevsim/dev.c:1529) netdevsim
[   32.396079][  T197]  ? sysfs_file_ops (fs/sysfs/file.c:135)
[   32.396266][  T197] nsim_drv_port_del (drivers/net/netdevsim/dev.c:1836) netdevsim
[   32.396499][  T197]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[   32.396704][  T197] del_port_store (drivers/net/netdevsim/bus.c:118) netdevsim
[   32.396972][  T197]  ? sysfs_file_kobj (./include/linux/rcupdate.h:322 (discriminator 1) ./include/linux/rcupdate.h:881 (discriminator 1) ./include/linux/rcupdate.h:1193 (discriminator 1) fs/sysfs/file.c:24 (discriminator 1))
[   32.397282][  T197]  ? del_device_store (drivers/net/netdevsim/bus.c:106) netdevsim
[   32.397608][  T197]  ? sysfs_file_kobj (fs/sysfs/file.c:26)
[   32.397878][  T197]  ? sysfs_kf_write (fs/sysfs/file.c:139)
[   32.398176][  T197]  kernfs_fop_write_iter (fs/kernfs/file.c:88 fs/kernfs/file.c:356)
[   32.398454][  T197]  ? kernfs_ops (fs/kernfs/file.c:312)
[   32.398710][  T197]  new_sync_write (fs/read_write.c:596 (discriminator 1))
[   32.399042][  T197]  ? new_sync_read (fs/read_write.c:586)
[   32.399323][  T197]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[   32.399600][  T197]  ? ksys_write (fs/read_write.c:741)
[   32.399883][  T197]  vfs_write (fs/read_write.c:688)
[   32.400129][  T197]  ksys_write (fs/read_write.c:741)
[   32.400353][  T197]  ? __ia32_sys_read (fs/read_write.c:730)
[   32.400627][  T197]  ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   32.400896][  T197]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:752 (discriminator 1))
[   32.401195][  T197]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[   32.401469][  T197]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[   32.401740][  T197]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   32.402089][  T197] RIP: 0033:0x7f3467c02c5e
[   32.402373][  T197] Code: 4d 89 d8 e8 34 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 13 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 34 bd 00 00       	call   0xbd3c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 13 ff ff ff       	call   0xffffffffffffff4c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 13 ff ff ff       	call   0xffffffffffffff22
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   32.403216][  T197] RSP: 002b:00007ffdadf76050 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[   32.403594][  T197] RAX: ffffffffffffffda RBX: 00007f3467d7e5c0 RCX: 00007f3467c02c5e
[   32.403987][  T197] RDX: 0000000000000002 RSI: 000055cb38c5fe70 RDI: 0000000000000001
[   32.404375][  T197] RBP: 00007ffdadf76060 R08: 0000000000000000 R09: 0000000000000000
[   32.404746][  T197] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002


Finger prints:
nsim_destroy:__nsim_dev_port_del:nsim_dev_reload_destroy:nsim_drv_remove:device_release_driver_internal
nsim_destroy:__nsim_dev_port_del:nsim_drv_port_del:del_port_store:kernfs_fop_write_iter