======================================
| [  100.790880][   T67] netdevsim netdevsim575 eni575np2: unset [1, 0] type 2 family 0 port 6081 - 0
| [  101.398907][  T867] ------------[ cut here ]------------
| [  101.399346][  T867] WARNING: drivers/net/netdevsim/netdev.c:1234 at nsim_destroy+0x128/0x7b0 [netdevsim], CPU#2: modprobe/867
| [  101.400008][  T867] Modules linked in: netdevsim(-) [last unloaded: ip6_udp_tunnel]
[  101.401865][  T867] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  101.402244][  T867] RIP: 0010:nsim_destroy (drivers/net/netdevsim/netdev.c:1234 (discriminator 2)) netdevsim
[  101.402665][  T867] 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 ac d0 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 f0 cf
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 ac d0       	call   0xffffffffd0ac17a2
  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 f0 cf       	call   0xffffffffcff02322

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 f0 cf       	call   0xffffffffcff022f8
[  101.403648][  T867] RSP: 0018:ffa0000000557b58 EFLAGS: 00010293
[  101.404027][  T867] RAX: 0000000000000000 RBX: ff1100000c41ad00 RCX: ff1100000c41b448
[  101.404480][  T867] RDX: 0000000000000000 RSI: 0000000000000000 RDI: dffffc0000000000
[  101.404940][  T867] RBP: ff1100000c41b448 R08: ff1100000c41b448 R09: 0000000000000000
[  101.405375][  T867] R10: 1fe2200001883689 R11: 0000000000000001 R12: ff1100000a840c98
[  101.405847][  T867] R13: dffffc0000000000 R14: ff1100000a840800 R15: ffffffffc03e0380
[  101.406456][  T867] FS:  00007f265c6aebc0(0000) GS:ff110000a1b85000(0000) knlGS:0000000000000000
[  101.406974][  T867] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  101.407339][  T867] CR2: 00007f265c6db0d0 CR3: 000000000f79c001 CR4: 0000000000771ef0
[  101.407792][  T867] PKRU: 55555554
[  101.408030][  T867] Call Trace:
[  101.408271][  T867]  <TASK>
[  101.408458][  T867]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:752 (discriminator 1))
[  101.408807][  T867] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:444 drivers/net/netdevsim/dev.c:1529) netdevsim
[  101.409185][  T867]  ? devl_lock_is_held (net/devlink/core.c:285 (discriminator 1))
[  101.409495][  T867] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1538 (discriminator 4) drivers/net/netdevsim/dev.c:1764 (discriminator 4)) netdevsim
[  101.409900][  T867] nsim_drv_remove (drivers/net/netdevsim/dev.c:1781) netdevsim
[  101.410214][  T867]  device_release_driver_internal (drivers/base/dd.c:1286 drivers/base/dd.c:1307)
[  101.410622][  T867]  bus_remove_device (./include/linux/kobject.h:193 drivers/base/base.h:73 drivers/base/bus.c:623)
[  101.410943][  T867]  device_del (drivers/base/core.c:3879)
[  101.411201][  T867]  ? __device_link_del (drivers/base/core.c:3833)
[  101.411516][  T867]  device_unregister (drivers/base/core.c:3796 drivers/base/core.c:3920)
[  101.411837][  T867] nsim_bus_exit (drivers/net/netdevsim/bus.c:530 (discriminator 4)) netdevsim
[  101.412147][  T867] nsim_module_exit (drivers/net/netdevsim/netdev.c:1290) netdevsim
[  101.412531][  T867]  __do_sys_delete_module (kernel/module/main.c:836)
[  101.412899][  T867]  ? module_flags (kernel/module/main.c:778)
[  101.413196][  T867]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4473)
[  101.413513][  T867]  ? 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)
[  101.413831][  T867]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:752 (discriminator 1))
[  101.414138][  T867]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[  101.414444][  T867]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[  101.414773][  T867]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  101.415145][  T867] RIP: 0033:0x7f265c7a637b
[  101.415469][  T867] 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
[  101.416462][  T867] RSP: 002b:00007ffce07ee708 EFLAGS: 00000202 ORIG_RAX: 00000000000000b0
[  101.416940][  T867] RAX: ffffffffffffffda RBX: 00005559d71c7a10 RCX: 00007f265c7a637b
[  101.417388][  T867] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 00005559d71c7a70
[  101.417859][  T867] RBP: 00007ffce07ee730 R08: 0000000000000000 R09: 0000000000000000
[  101.418305][  T867] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
[  101.418772][  T867] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
| [  110.360809][  T672] ------------[ cut here ]------------
| [  110.361171][  T672] WARNING: drivers/net/netdevsim/netdev.c:1234 at nsim_destroy+0x128/0x7b0 [netdevsim], CPU#2: udp_tunnel_nic./672
| [  110.361642][  T672] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  110.362838][  T672] Tainted: [W]=WARN
[  110.363025][  T672] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  110.363291][  T672] RIP: 0010:nsim_destroy (drivers/net/netdevsim/netdev.c:1234 (discriminator 2)) netdevsim
[  110.363542][  T672] 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 ac d0 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 f0 cf
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 ac d0       	call   0xffffffffd0ac17a2
  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 f0 cf       	call   0xffffffffcff02322

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 f0 cf       	call   0xffffffffcff022f8
[  110.364275][  T672] RSP: 0018:ffa0000000837b70 EFLAGS: 00010293
[  110.364550][  T672] RAX: 0000000000000000 RBX: ff1100000f8aad00 RCX: ff1100000f8ab448
[  110.364911][  T672] RDX: 0000000000000000 RSI: 0000000000000000 RDI: dffffc0000000000
[  110.365249][  T672] RBP: ff1100000f8ab448 R08: ff1100000f8ab448 R09: 0000000000000000
[  110.365547][  T672] R10: 1fe2200001f15689 R11: 0000000000000001 R12: dffffc0000000000
[  110.365885][  T672] R13: ff1100000a84e958 R14: 0000000000000002 R15: ffffffff8ff4fcc0
[  110.366210][  T672] FS:  00007f9073a80bc0(0000) GS:ff110000a1b85000(0000) knlGS:0000000000000000
[  110.366555][  T672] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  110.366813][  T672] CR2: 000055577bb028a0 CR3: 000000000c847006 CR4: 0000000000771ef0
[  110.367088][  T672] PKRU: 55555554
[  110.367280][  T672] Call Trace:
[  110.367449][  T672]  <TASK>
[  110.367601][  T672]  ? sysfs_file_ops (fs/sysfs/file.c:135)
[  110.367809][  T672] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:444 drivers/net/netdevsim/dev.c:1529) netdevsim
[  110.368058][  T672]  ? sysfs_file_ops (fs/sysfs/file.c:135)
[  110.368273][  T672] nsim_drv_port_del (drivers/net/netdevsim/dev.c:1836) netdevsim
[  110.368515][  T672]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5536)
[  110.368737][  T672] del_port_store (drivers/net/netdevsim/bus.c:118) netdevsim
[  110.368942][  T672]  ? 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))
[  110.369182][  T672]  ? del_device_store (drivers/net/netdevsim/bus.c:106) netdevsim
[  110.369435][  T672]  ? sysfs_file_kobj (fs/sysfs/file.c:26)
[  110.369661][  T672]  ? sysfs_kf_write (fs/sysfs/file.c:139)
[  110.369904][  T672]  kernfs_fop_write_iter (fs/kernfs/file.c:88 fs/kernfs/file.c:356)
[  110.370144][  T672]  ? kernfs_ops (fs/kernfs/file.c:312)
[  110.370349][  T672]  new_sync_write (fs/read_write.c:596 (discriminator 1))
[  110.370605][  T672]  ? new_sync_read (fs/read_write.c:586)
[  110.370839][  T672]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:470 kernel/locking/lockdep.c:5870)
[  110.371068][  T672]  ? ksys_write (fs/read_write.c:741)
[  110.371306][  T672]  vfs_write (fs/read_write.c:688)
[  110.371491][  T672]  ksys_write (fs/read_write.c:741)
[  110.371678][  T672]  ? __ia32_sys_read (fs/read_write.c:730)
[  110.371911][  T672]  ? 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)
[  110.372147][  T672]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 1) kernel/rcu/tree.c:752 (discriminator 1))
[  110.372375][  T672]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 (discriminator 1) arch/x86/entry/syscall_64.c:94 (discriminator 1))
[  110.372624][  T672]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[  110.372858][  T672]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[  110.373246][  T672] RIP: 0033:0x7f9073af0c5e
[  110.373475][  T672] 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
[  110.374276][  T672] RSP: 002b:00007ffdad70d420 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[  110.374615][  T672] RAX: ffffffffffffffda RBX: 00007f9073c6c5c0 RCX: 00007f9073af0c5e
[  110.374934][  T672] RDX: 0000000000000002 RSI: 000055577bb30e70 RDI: 0000000000000001
[  110.375320][  T672] RBP: 00007ffdad70d430 R08: 0000000000000000 R09: 0000000000000000
[  110.375611][  T672] 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