======================================
| 0
| xx__-> [   11.946206][  T228] ------------[ cut here ]------------
| [ 11.946735][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   11.947216][  T228] Modules linked in: netdevsim
[   11.947815][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 11.948111][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.948397][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   11.949187][  T228] RSP: 0018:ffffc90000ab7520 EFLAGS: 00010246
[   11.949521][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   11.949907][  T228] RDX: 0000000000000000 RSI: ffff88800b96ac98 RDI: ffff88800b8a50f8
[   11.950299][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[   11.950681][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[   11.951122][  T228] R13: ffff88800b96a128 R14: ffff88800b96a008 R15: ffff88800b96a000
[   11.951521][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   11.952001][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   11.952342][  T228] CR2: 00007f491b5e04d0 CR3: 000000000bedc003 CR4: 0000000000772ef0
[   11.952723][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   11.953107][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   11.953453][  T228] PKRU: 55555554
[   11.953671][  T228] Call Trace:
[   11.953856][  T228]  <TASK>
[ 11.954033][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.954290][ T228] ? __warn (kernel/panic.c:748) 
[ 11.954471][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.954711][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 11.955007][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 11.955217][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 11.955492][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 11.955770][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.956053][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 11.956375][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 11.956635][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 11.956886][ T228] register_netdevice (net/core/dev.c:11003) 
[ 11.957160][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 11.957422][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 11.957699][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 11.958021][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 11.958223][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 11.958545][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 11.958859][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 11.959207][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 11.959452][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 11.959782][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 11.960050][ T228] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 11.960255][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 11.960525][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 11.960825][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 11.961107][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 11.961379][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 11.961643][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 11.961974][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 11.962245][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 11.962479][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 11.962704][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 11.962945][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 11.963220][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 11.963479][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 11.963701][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 11.963938][ T228] ? 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) 
[ 11.964193][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 11.964438][ T228] device_add (drivers/base/core.c:3672) 
[ 11.964682][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 11.964935][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 11.965205][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 11.965530][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 11.965840][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 11.966105][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 11.966342][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 11.966571][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 11.966802][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 11.967024][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 11.967274][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 11.967524][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 11.967783][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 11.968052][ T228] ksys_write (fs/read_write.c:731) 
[ 11.968245][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 11.968480][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 11.968728][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 11.968988][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   11.969255][  T228] RIP: 0033:0x7f25ce432b77
[ 11.969559][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   11.970563][  T228] RSP: 002b:00007ffece2bd038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   11.971029][  T228] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f25ce432b77
[   11.971421][  T228] RDX: 0000000000000005 RSI: 0000562b0905c340 RDI: 0000000000000001
[   11.971826][  T228] RBP: 0000562b0905c340 R08: 0000000000000003 R09: 0000000000000077
[   11.972227][  T228] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[   11.972595][  T228] R13: 00007f25ce4ee760 R14: 0000000000000005 R15: 00007f25ce4e99c0
| [   18.184791][  T228] ------------[ cut here ]------------
| [ 18.185169][ T228] WARNING: CPU: 1 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   18.185603][  T228] Modules linked in: netdevsim [last unloaded: ip6_udp_tunnel]
| [   18.186771][  T228] Tainted: [W]=WARN
[   18.186983][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 18.187261][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 18.187545][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   18.188315][  T228] RSP: 0018:ffffc90000ab7910 EFLAGS: 00010246
[   18.188592][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   18.188971][  T228] RDX: 0000000000000000 RSI: ffff88800dc42c98 RDI: ffff88800b8a50a8
[   18.189426][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[   18.189914][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[   18.190421][  T228] R13: ffff88800dc42128 R14: ffff88800dc42008 R15: ffff88800dc42000
[   18.190911][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   18.191495][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   18.191909][  T228] CR2: 0000562b0905c340 CR3: 000000000bedc006 CR4: 0000000000772ef0
[   18.192392][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   18.192876][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   18.193386][  T228] PKRU: 55555554
[   18.193636][  T228] Call Trace:
[   18.193896][  T228]  <TASK>
[ 18.194351][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 18.194706][ T228] ? __warn (kernel/panic.c:748) 
[ 18.194968][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 18.195199][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 18.195434][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 18.195605][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 18.195843][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 18.196154][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 18.196475][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 18.196888][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 18.197249][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 18.197582][ T228] register_netdevice (net/core/dev.c:11003) 
[ 18.197896][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 18.198238][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 18.198560][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 18.198917][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 18.199413][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 18.199871][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 18.200200][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 18.200541][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 18.200947][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 18.201249][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 18.201465][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 18.201671][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 18.201899][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 18.202088][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 18.202298][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 18.202513][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 18.202758][ T228] ksys_write (fs/read_write.c:731) 
[ 18.202920][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 18.203173][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 18.203383][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   18.203634][  T228] RIP: 0033:0x7f25ce432b77
[ 18.203853][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   18.204572][  T228] RSP: 002b:00007ffece2bcf38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   18.204919][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f25ce432b77
[   18.205255][  T228] RDX: 0000000000000002 RSI: 0000562b0905c340 RDI: 0000000000000001
[   18.205647][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[   18.205991][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000002
[   18.206316][  T228] R13: 00007f25ce4ee760 R14: 0000000000000002 R15: 00007f25ce4e99c0
| [   25.052065][  T228] ------------[ cut here ]------------
| [ 25.052432][ T228] WARNING: CPU: 1 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   25.052891][  T228] Modules linked in: netdevsim [last unloaded: netdevsim]
| [   25.053628][  T228] Tainted: [W]=WARN
[   25.053787][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 25.054074][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.054357][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   25.055103][  T228] RSP: 0018:ffffc90000ab7520 EFLAGS: 00010246
[   25.055383][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   25.055691][  T228] RDX: 0000000000000000 RSI: ffff8880023e2c98 RDI: ffff88800b8a50f8
[   25.056016][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[   25.056338][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[   25.056717][  T228] R13: ffff8880023e2128 R14: ffff8880023e2008 R15: ffff8880023e2000
[   25.057145][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   25.057502][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.057757][  T228] CR2: 00007f25ce4a5733 CR3: 000000000bedc002 CR4: 0000000000772ef0
[   25.058169][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.058478][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.058778][  T228] PKRU: 55555554
[   25.058931][  T228] Call Trace:
[   25.059183][  T228]  <TASK>
[ 25.059292][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.059518][ T228] ? __warn (kernel/panic.c:748) 
[ 25.059688][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.059925][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 25.060173][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 25.060358][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 25.060587][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 25.061053][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.061289][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 25.061570][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 25.061806][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 25.062065][ T228] register_netdevice (net/core/dev.c:11003) 
[ 25.062313][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 25.062559][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 25.062808][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 25.063126][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 25.063305][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 25.063594][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 25.063879][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 25.064179][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 25.064404][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 25.064679][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 25.064911][ T228] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 25.065082][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 25.065305][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 25.065531][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 25.065752][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 25.065989][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 25.066210][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 25.066485][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 25.066701][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 25.066912][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 25.067133][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 25.067365][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 25.067607][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 25.067822][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 25.068046][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 25.068253][ T228] ? 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) 
[ 25.068469][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 25.068723][ T228] device_add (drivers/base/core.c:3672) 
[ 25.068938][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 25.069188][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 25.069525][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 25.070016][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 25.070496][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 25.070848][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 25.071227][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 25.071577][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 25.071946][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 25.072258][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 25.072649][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 25.073038][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 25.073312][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 25.073637][ T228] ksys_write (fs/read_write.c:731) 
[ 25.073917][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 25.074285][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 25.074663][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 25.075045][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.075501][  T228] RIP: 0033:0x7f25ce432b77
[ 25.075877][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   25.077131][  T228] RSP: 002b:00007ffece2c07d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   25.077732][  T228] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f25ce432b77
[   25.078286][  T228] RDX: 0000000000000005 RSI: 0000562b0905c340 RDI: 0000000000000001
[   25.078809][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[   25.079346][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000005
[   25.079924][  T228] R13: 00007f25ce4ee760 R14: 0000000000000005 R15: 00007f25ce4e99c0
| [   25.128877][  T228] ------------[ cut here ]------------
| [ 25.129560][ T228] WARNING: CPU: 1 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   25.130247][  T228] Modules linked in: netdevsim [last unloaded: netdevsim]
| [   25.131171][  T228] Tainted: [W]=WARN
[   25.131340][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 25.131598][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.131849][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   25.132698][  T228] RSP: 0018:ffffc90000ab7910 EFLAGS: 00010246
[   25.133066][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   25.133354][  T228] RDX: 0000000000000000 RSI: ffff88800b922c98 RDI: ffff88800b8a50a8
[   25.133677][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[   25.134134][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[   25.134581][  T228] R13: ffff88800b922128 R14: ffff88800b922008 R15: ffff88800b922000
[   25.134859][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   25.135599][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.135920][  T228] CR2: 00007f25ce4a5733 CR3: 000000000bedc002 CR4: 0000000000772ef0
[   25.136445][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.136747][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.137211][  T228] PKRU: 55555554
[   25.137356][  T228] Call Trace:
[   25.137498][  T228]  <TASK>
[ 25.137594][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.137791][ T228] ? __warn (kernel/panic.c:748) 
[ 25.137947][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.138456][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 25.138651][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 25.138795][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 25.139019][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 25.139222][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.139439][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 25.139681][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 25.139872][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 25.140128][ T228] register_netdevice (net/core/dev.c:11003) 
[ 25.140343][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 25.140540][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 25.140745][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 25.141036][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 25.141300][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 25.141542][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 25.141731][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 25.141943][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 25.142240][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 25.142453][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 25.142669][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 25.142862][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 25.143083][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 25.143235][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 25.143460][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 25.143655][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 25.143861][ T228] ksys_write (fs/read_write.c:731) 
[ 25.144022][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 25.144252][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 25.144443][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.144700][  T228] RIP: 0033:0x7f25ce432b77
[ 25.144908][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   25.145608][  T228] RSP: 002b:00007ffece2c07d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   25.145942][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f25ce432b77
[   25.146475][  T228] RDX: 0000000000000002 RSI: 0000562b0905c340 RDI: 0000000000000001
[   25.146767][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[   25.147100][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000002
[   25.147379][  T228] R13: 00007f25ce4ee760 R14: 0000000000000002 R15: 00007f25ce4e99c0
| [   31.707766][  T228] ------------[ cut here ]------------
| [ 31.708221][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   31.708744][  T228] Modules linked in: netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   31.709696][  T228] Tainted: [W]=WARN
[   31.709866][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 31.710160][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 31.710489][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   31.711441][  T228] RSP: 0018:ffffc90000ab7520 EFLAGS: 00010246
[   31.711799][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   31.712154][  T228] RDX: 0000000000000000 RSI: ffff88800b97ac98 RDI: ffff88800b8a50f8
[   31.712553][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[   31.713129][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[   31.713507][  T228] R13: ffff88800b97a128 R14: ffff88800b97a008 R15: ffff88800b97a000
[   31.713860][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   31.714276][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   31.714578][  T228] CR2: 00007f25ce4a5733 CR3: 000000000bedc004 CR4: 0000000000772ef0
[   31.714923][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   31.715278][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   31.715671][  T228] PKRU: 55555554
[   31.715863][  T228] Call Trace:
[   31.716054][  T228]  <TASK>
[ 31.716184][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 31.716432][ T228] ? __warn (kernel/panic.c:748) 
[ 31.716615][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 31.716855][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 31.717115][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 31.717305][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 31.717568][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 31.717823][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 31.718083][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 31.718485][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 31.718729][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 31.718986][ T228] register_netdevice (net/core/dev.c:11003) 
[ 31.719233][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 31.719520][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 31.719776][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 31.720091][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 31.720279][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 31.720594][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 31.720873][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 31.721206][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 31.721457][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 31.721736][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 31.721974][ T228] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 31.722147][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 31.722382][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 31.722627][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 31.722865][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 31.723112][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 31.723338][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 31.723625][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 31.723853][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 31.724087][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 31.724316][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 31.724611][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 31.724844][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 31.725083][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 31.725305][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 31.725543][ T228] ? 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) 
[ 31.725781][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 31.726031][ T228] device_add (drivers/base/core.c:3672) 
[ 31.726282][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 31.726527][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 31.726766][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 31.727084][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 31.727378][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 31.727615][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 31.727847][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 31.728101][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 31.728331][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 31.728542][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 31.728769][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 31.729011][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 31.729248][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 31.729494][ T228] ksys_write (fs/read_write.c:731) 
[ 31.729683][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 31.729964][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 31.730213][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 31.730457][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   31.730738][  T228] RIP: 0033:0x7f25ce432b77
[ 31.730979][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   31.731706][  T228] RSP: 002b:00007ffece2c07d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   31.732041][  T228] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f25ce432b77
[   31.732360][  T228] RDX: 0000000000000005 RSI: 0000562b0905c340 RDI: 0000000000000001
[   31.732679][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[   31.733016][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000005
[   31.733343][  T228] R13: 00007f25ce4ee760 R14: 0000000000000005 R15: 00007f25ce4e99c0
| [   31.817863][  T228] ------------[ cut here ]------------
| [ 31.818356][ T228] WARNING: CPU: 3 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   31.818836][  T228] Modules linked in: netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   31.819766][  T228] Tainted: [W]=WARN
[   31.819963][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 31.820241][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 31.820523][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   31.821257][  T228] RSP: 0018:ffffc90000ab7910 EFLAGS: 00010246
[   31.821566][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   31.821902][  T228] RDX: 0000000000000000 RSI: ffff88800b8bac98 RDI: ffff88800b8a50a8
[   31.822236][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[   31.822559][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[   31.822877][  T228] R13: ffff88800b8ba128 R14: ffff88800b8ba008 R15: ffff88800b8ba000
[   31.823199][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   31.823608][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   31.823869][  T228] CR2: 00007f25ce4514c0 CR3: 000000000bedc005 CR4: 0000000000772ef0
[   31.824224][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   31.824933][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   31.825284][  T228] PKRU: 55555554
[   31.825445][  T228] Call Trace:
[   31.825609][  T228]  <TASK>
[ 31.825720][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 31.825942][ T228] ? __warn (kernel/panic.c:748) 
[ 31.826120][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 31.826343][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 31.826591][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 31.826751][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 31.827049][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 31.827310][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 31.827568][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 31.827947][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 31.828270][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 31.828558][ T228] register_netdevice (net/core/dev.c:11003) 
[ 31.828858][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 31.829140][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 31.829425][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 31.829720][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 31.830131][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 31.830482][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 31.830787][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 31.831086][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 31.831472][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 31.831830][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 31.832094][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 31.832436][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 31.832729][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 31.833006][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 31.833289][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 31.833594][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 31.833922][ T228] ksys_write (fs/read_write.c:731) 
[ 31.834191][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 31.834510][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 31.834773][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   31.835127][  T228] RIP: 0033:0x7f25ce432b77
[ 31.835414][ T228] Code: Unable to access opcode bytes at 0x7f25ce432b4d.

Code starting with the faulting instruction
===========================================
[   31.835786][  T228] RSP: 002b:00007ffece2be208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   31.836164][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f25ce432b77
[   31.836494][  T228] RDX: 0000000000000002 RSI: 0000562b0905c340 RDI: 0000000000000001
[   31.836845][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[   31.837197][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000002
[   31.837536][  T228] R13: 00007f25ce4ee760 R14: 0000000000000002 R15: 00007f25ce4e99c0
| [   47.833211][  T228] ------------[ cut here ]------------
| [ 47.833623][ T228] WARNING: CPU: 3 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   47.834266][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   47.835590][  T228] Tainted: [W]=WARN
[   47.835830][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 47.836228][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 47.836638][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   47.837765][  T228] RSP: 0018:ffffc90000ab7910 EFLAGS: 00010246
[   47.838206][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   47.838696][  T228] RDX: 0000000000000000 RSI: ffff88800aa02c98 RDI: ffff88800b8a50a8
[   47.839198][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[   47.839686][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[   47.840185][  T228] R13: ffff88800aa02128 R14: ffff88800aa02008 R15: ffff88800aa02000
[   47.840646][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   47.841213][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   47.841627][  T228] CR2: 00007f25ce44fcb0 CR3: 000000000bedc005 CR4: 0000000000772ef0
[   47.842132][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   47.842626][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   47.843117][  T228] PKRU: 55555554
[   47.843378][  T228] Call Trace:
[   47.843626][  T228]  <TASK>
[ 47.843806][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 47.844143][ T228] ? __warn (kernel/panic.c:748) 
[ 47.844391][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 47.844705][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 47.845043][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 47.845279][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 47.845628][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 47.846026][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 47.846380][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 47.846810][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 47.847161][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 47.847484][ T228] register_netdevice (net/core/dev.c:11003) 
[ 47.847825][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 47.848195][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 47.848558][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 47.848998][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 47.849465][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 47.849890][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 47.850225][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 47.850571][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 47.851020][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 47.851363][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 47.851697][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 47.852032][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 47.852351][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 47.852606][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 47.852924][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 47.853275][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 47.853631][ T228] ksys_write (fs/read_write.c:731) 
[ 47.853885][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 47.854253][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 47.854589][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   47.855009][  T228] RIP: 0033:0x7f25ce432b77
[ 47.855355][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   47.856526][  T228] RSP: 002b:00007ffece2be208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   47.857044][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f25ce432b77
[   47.857534][  T228] RDX: 0000000000000002 RSI: 0000562b0905c340 RDI: 0000000000000001
[   47.858038][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[   47.858537][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000002
[   47.859033][  T228] R13: 00007f25ce4ee760 R14: 0000000000000002 R15: 00007f25ce4e99c0
| [   63.665228][  T228] ------------[ cut here ]------------
| [ 63.665939][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   63.666927][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   63.668581][  T228] Tainted: [W]=WARN
[   63.668886][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 63.669406][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 63.669947][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   63.671690][  T228] RSP: 0018:ffffc90000ab7520 EFLAGS: 00010246
[   63.672347][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   63.672932][  T228] RDX: 0000000000000000 RSI: ffff88800e4eac98 RDI: ffff88800b8a50f8
[   63.673661][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[   63.674477][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[   63.675116][  T228] R13: ffff88800e4ea128 R14: ffff88800e4ea008 R15: ffff88800e4ea000
[   63.675748][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   63.676484][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   63.677196][  T228] CR2: 00007f491b303a00 CR3: 000000000bedc006 CR4: 0000000000772ef0
[   63.677803][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   63.678857][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   63.679486][  T228] PKRU: 55555554
[   63.679800][  T228] Call Trace:
[   63.680114][  T228]  <TASK>
[ 63.680305][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 63.680708][ T228] ? __warn (kernel/panic.c:748) 
[ 63.681052][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 63.681447][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 63.681872][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 63.682213][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 63.682632][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 63.683106][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 63.683548][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 63.684080][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 63.684496][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 63.684946][ T228] register_netdevice (net/core/dev.c:11003) 
[ 63.685415][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 63.685902][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 63.686364][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 63.687022][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 63.687606][ T228] ? queue_delayed_work_on (kernel/workqueue.c:2565 (discriminator 1)) 
[ 63.688067][ T228] ? queue_delayed_work_on (kernel/workqueue.c:2567) 
[ 63.688522][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 63.689093][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 63.689544][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 63.690122][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 63.690549][ T228] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 63.690851][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 63.691315][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 63.691760][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 63.692211][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 63.692634][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 63.693069][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 63.693583][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 63.694010][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 63.694415][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 63.694815][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 63.695222][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 63.695667][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 63.696125][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 63.696529][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 63.696941][ T228] ? 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) 
[ 63.697397][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 63.697821][ T228] device_add (drivers/base/core.c:3672) 
[ 63.698257][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 63.698657][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 63.699108][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 63.699665][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 63.700222][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 63.700683][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 63.701126][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 63.701525][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 63.701920][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 63.702255][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 63.702662][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 63.703099][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 63.703523][ T228] ksys_write (fs/read_write.c:731) 
[ 63.703821][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 63.704245][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 63.704628][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   63.705114][  T228] RIP: 0033:0x7f25ce432b77
[ 63.705530][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   63.706890][  T228] RSP: 002b:00007ffece2c07d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   63.707481][  T228] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f25ce432b77
[   63.708053][  T228] RDX: 0000000000000005 RSI: 0000562b0905c340 RDI: 0000000000000001
[   63.708576][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[   63.709136][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000005
[   63.709711][  T228] R13: 00007f25ce4ee760 R14: 0000000000000005 R15: 00007f25ce4e99c0
| [   63.772325][  T228] ------------[ cut here ]------------
| [ 63.772769][ T228] WARNING: CPU: 1 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   63.773736][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   63.774868][  T228] Tainted: [W]=WARN
[   63.775070][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 63.775383][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 63.775873][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   63.777358][  T228] RSP: 0018:ffffc90000ab7910 EFLAGS: 00010246
[   63.777912][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   63.778479][  T228] RDX: 0000000000000000 RSI: ffff88800b97ac98 RDI: ffff88800b8a50a8
[   63.779098][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[   63.780029][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[   63.780592][  T228] R13: ffff88800b97a128 R14: ffff88800b97a008 R15: ffff88800b97a000
[   63.781001][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   63.781674][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   63.782186][  T228] CR2: 00007ffece2bdff8 CR3: 000000000bedc003 CR4: 0000000000772ef0
[   63.782692][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   63.783060][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   63.783412][  T228] PKRU: 55555554
[   63.783581][  T228] Call Trace:
[   63.783737][  T228]  <TASK>
[ 63.783850][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 63.784240][ T228] ? __warn (kernel/panic.c:748) 
[ 63.784404][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 63.784660][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 63.784914][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 63.785197][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 63.785460][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 63.785726][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 63.786108][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 63.786402][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 63.786624][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 63.786862][ T228] register_netdevice (net/core/dev.c:11003) 
[ 63.787177][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 63.787419][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 63.787651][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 63.788064][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 63.788372][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 63.788653][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 63.788857][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 63.789126][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 63.789426][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 63.789695][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 63.789963][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 63.790204][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 63.790478][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 63.790666][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 63.790897][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 63.791145][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 63.791380][ T228] ksys_write (fs/read_write.c:731) 
[ 63.791603][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 63.791890][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 63.792163][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   63.792448][  T228] RIP: 0033:0x7f25ce432b77
[ 63.792682][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   63.793753][  T228] RSP: 002b:00007ffece2be208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   63.794277][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f25ce432b77
[   63.794798][  T228] RDX: 0000000000000002 RSI: 0000562b0905c340 RDI: 0000000000000001
[   63.795179][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[   63.795500][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000002
[   63.795890][  T228] R13: 00007f25ce4ee760 R14: 0000000000000002 R15: 00007f25ce4e99c0
| [   79.221162][  T228] ------------[ cut here ]------------
| [ 79.221434][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   79.221835][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   79.222646][  T228] Tainted: [W]=WARN
[   79.222814][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 79.223113][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 79.223375][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   79.224063][  T228] RSP: 0018:ffffc90000ab7910 EFLAGS: 00010246
[   79.224314][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   79.224613][  T228] RDX: 0000000000000000 RSI: ffff88800b8bac98 RDI: ffff88800b8a50a8
[   79.224912][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[   79.225218][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[   79.225661][  T228] R13: ffff88800b8ba128 R14: ffff88800b8ba008 R15: ffff88800b8ba000
[   79.226157][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   79.226647][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   79.227091][  T228] CR2: 00007f25ce44fcb0 CR3: 000000000bedc004 CR4: 0000000000772ef0
[   79.227590][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   79.228095][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   79.228572][  T228] PKRU: 55555554
[   79.228833][  T228] Call Trace:
[   79.229133][  T228]  <TASK>
[ 79.229257][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 79.229493][ T228] ? __warn (kernel/panic.c:748) 
[ 79.229670][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 79.229891][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 79.230117][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 79.230304][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 79.230529][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 79.230751][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 79.230976][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 79.231233][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 79.231440][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 79.231668][ T228] register_netdevice (net/core/dev.c:11003) 
[ 79.231879][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 79.232137][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 79.232372][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 79.232665][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 79.232973][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 79.233256][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 79.233492][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 79.233731][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 79.234042][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 79.234267][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 79.234504][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 79.234728][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 79.234975][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 79.235156][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 79.235385][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 79.235727][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 79.236118][ T228] ksys_write (fs/read_write.c:731) 
[ 79.236394][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 79.236786][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 79.237164][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   79.237535][  T228] RIP: 0033:0x7f25ce432b77
[ 79.237768][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   79.238511][  T228] RSP: 002b:00007ffece2be208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   79.238846][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f25ce432b77
[   79.239185][  T228] RDX: 0000000000000002 RSI: 0000562b0905c340 RDI: 0000000000000001
[   79.239530][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[   79.240053][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000002
[   79.240565][  T228] R13: 00007f25ce4ee760 R14: 0000000000000002 R15: 00007f25ce4e99c0
| [   92.884371][  T228] ------------[ cut here ]------------
| [ 92.884810][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   92.885432][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   92.886656][  T228] Tainted: [W]=WARN
[   92.886866][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 92.887150][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 92.887517][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   92.888422][  T228] RSP: 0018:ffffc90000ab7520 EFLAGS: 00010246
[   92.888700][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   92.889033][  T228] RDX: 0000000000000000 RSI: ffff88800aa02c98 RDI: ffff88800b8a50f8
[   92.889424][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[   92.889792][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[   92.890146][  T228] R13: ffff88800aa02128 R14: ffff88800aa02008 R15: ffff88800aa02000
[   92.890555][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   92.890928][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   92.891201][  T228] CR2: 00007efd33131000 CR3: 000000000bedc005 CR4: 0000000000772ef0
[   92.891595][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   92.891914][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   92.892247][  T228] PKRU: 55555554
[   92.892489][  T228] Call Trace:
[   92.892713][  T228]  <TASK>
[ 92.892874][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 92.893167][ T228] ? __warn (kernel/panic.c:748) 
[ 92.893358][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 92.893604][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 92.893878][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 92.894107][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 92.894405][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 92.894725][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 92.894982][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 92.895299][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 92.895531][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 92.895778][ T228] register_netdevice (net/core/dev.c:11003) 
[ 92.896091][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 92.896365][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 92.896622][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 92.896926][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 92.897153][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 92.897519][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 92.897792][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 92.898106][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 92.898437][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 92.898745][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 92.899086][ T228] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 92.899254][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 92.899547][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 92.899765][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 92.900051][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 92.900272][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 92.900500][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 92.900837][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 92.901128][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 92.901391][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 92.901679][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 92.901889][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 92.902163][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 92.902422][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 92.902772][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 92.903097][ T228] ? 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) 
[ 92.903381][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 92.903597][ T228] device_add (drivers/base/core.c:3672) 
[ 92.903810][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 92.904105][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 92.904347][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 92.904618][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 92.904967][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 92.905192][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 92.905488][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 92.905695][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 92.905996][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 92.906175][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 92.906543][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 92.906860][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 92.907177][ T228] ksys_write (fs/read_write.c:731) 
[ 92.907376][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 92.907656][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 92.907880][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   92.908220][  T228] RIP: 0033:0x7f25ce432b77
[ 92.908453][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   92.909370][  T228] RSP: 002b:00007ffece2c07d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   92.909784][  T228] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f25ce432b77
[   92.910191][  T228] RDX: 0000000000000005 RSI: 0000562b0905c340 RDI: 0000000000000001
[   92.910613][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[   92.910997][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000005
[   92.911377][  T228] R13: 00007f25ce4ee760 R14: 0000000000000005 R15: 00007f25ce4e99c0
| [   92.954609][  T228] ------------[ cut here ]------------
| [ 92.954905][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   92.955742][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   92.956543][  T228] Tainted: [W]=WARN
[   92.956685][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 92.956921][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 92.957178][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   92.957837][  T228] RSP: 0018:ffffc90000ab7910 EFLAGS: 00010246
[   92.958081][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   92.958368][  T228] RDX: 0000000000000000 RSI: ffff88800e4eac98 RDI: ffff88800b8a50a8
[   92.958643][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[   92.958924][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[   92.959274][  T228] R13: ffff88800e4ea128 R14: ffff88800e4ea008 R15: ffff88800e4ea000
[   92.959564][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   92.959906][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   92.960167][  T228] CR2: 00007efd33131000 CR3: 000000000bedc005 CR4: 0000000000772ef0
[   92.960468][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   92.960766][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   92.961076][  T228] PKRU: 55555554
[   92.961217][  T228] Call Trace:
[   92.961357][  T228]  <TASK>
[ 92.961585][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 92.961784][ T228] ? __warn (kernel/panic.c:748) 
[ 92.961939][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 92.962151][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 92.962346][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 92.962494][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 92.962684][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 92.962884][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 92.963093][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 92.963331][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 92.963524][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 92.963716][ T228] register_netdevice (net/core/dev.c:11003) 
[ 92.963914][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 92.964123][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 92.964327][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 92.964569][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 92.964828][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 92.965084][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 92.965275][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 92.965473][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 92.965717][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 92.965903][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 92.966100][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 92.966293][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 92.966485][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 92.966639][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 92.966830][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 92.967036][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 92.967238][ T228] ksys_write (fs/read_write.c:731) 
[ 92.967383][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 92.967581][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 92.967772][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   92.968055][  T228] RIP: 0033:0x7f25ce432b77
[ 92.968258][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   92.969103][  T228] RSP: 002b:00007ffece2bfaf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   92.969398][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f25ce432b77
[   92.969813][  T228] RDX: 0000000000000002 RSI: 0000562b0905c340 RDI: 0000000000000001
[   92.970255][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[   92.970535][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000002
[   92.970807][  T228] R13: 00007f25ce4ee760 R14: 0000000000000002 R15: 00007f25ce4e99c0
| [  101.226432][  T228] ------------[ cut here ]------------
| [ 101.226862][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  101.227426][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  101.228398][  T228] Tainted: [W]=WARN
[  101.228601][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 101.228909][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 101.229277][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  101.230121][  T228] RSP: 0018:ffffc90000ab7910 EFLAGS: 00010246
[  101.230398][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  101.230795][  T228] RDX: 0000000000000000 RSI: ffff88800b97ac98 RDI: ffff88800b8a50a8
[  101.231186][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[  101.231515][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[  101.231861][  T228] R13: ffff88800b97a128 R14: ffff88800b97a008 R15: ffff88800b97a000
[  101.232195][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  101.232568][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  101.232860][  T228] CR2: 00007f25ce44fcb0 CR3: 000000000bedc001 CR4: 0000000000772ef0
[  101.233194][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  101.233524][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  101.233919][  T228] PKRU: 55555554
[  101.234105][  T228] Call Trace:
[  101.234278][  T228]  <TASK>
[ 101.234402][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 101.234656][ T228] ? __warn (kernel/panic.c:748) 
[ 101.234890][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 101.235176][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 101.235412][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 101.235636][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 101.235926][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 101.236248][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 101.236527][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 101.236852][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 101.237131][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 101.237369][ T228] register_netdevice (net/core/dev.c:11003) 
[ 101.237620][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 101.237936][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 101.238252][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 101.238558][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 101.239033][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 101.239451][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 101.239698][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 101.239937][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 101.240240][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 101.240467][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 101.240702][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 101.241016][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 101.241252][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 101.241497][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 101.241768][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 101.242032][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 101.242314][ T228] ksys_write (fs/read_write.c:731) 
[ 101.242494][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 101.242738][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 101.242984][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  101.243316][  T228] RIP: 0033:0x7f25ce432b77
[ 101.243607][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  101.244481][  T228] RSP: 002b:00007ffece2bfaf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  101.244838][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f25ce432b77
[  101.245226][  T228] RDX: 0000000000000002 RSI: 0000562b0905c340 RDI: 0000000000000001
[  101.245614][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[  101.246019][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000002
[  101.246377][  T228] R13: 00007f25ce4ee760 R14: 0000000000000002 R15: 00007f25ce4e99c0
| [  109.432762][  T228] ------------[ cut here ]------------
| [ 109.433230][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  109.433709][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  109.434700][  T228] Tainted: [W]=WARN
[  109.434884][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 109.435198][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 109.435505][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  109.436330][  T228] RSP: 0018:ffffc90000ab7520 EFLAGS: 00010246
[  109.436637][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  109.437001][  T228] RDX: 0000000000000000 RSI: ffff88800b8bac98 RDI: ffff88800b8a50f8
[  109.437348][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[  109.437712][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[  109.438077][  T228] R13: ffff88800b8ba128 R14: ffff88800b8ba008 R15: ffff88800b8ba000
[  109.438425][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  109.438818][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  109.439157][  T228] CR2: 0000562ace2c7990 CR3: 000000000bedc001 CR4: 0000000000772ef0
[  109.439785][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  109.440166][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  109.440524][  T228] PKRU: 55555554
[  109.440716][  T228] Call Trace:
[  109.440898][  T228]  <TASK>
[ 109.441038][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 109.441287][ T228] ? __warn (kernel/panic.c:748) 
[ 109.441490][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 109.441770][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 109.442063][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 109.442273][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 109.442527][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 109.442784][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 109.443047][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 109.443366][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 109.443644][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 109.443935][ T228] register_netdevice (net/core/dev.c:11003) 
[ 109.444238][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 109.444522][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 109.444794][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 109.445145][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 109.445372][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 109.445697][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 109.446036][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 109.446439][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 109.446721][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 109.447059][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 109.447331][ T228] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 109.447538][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 109.447835][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 109.448157][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 109.448531][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 109.448835][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 109.449167][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 109.449536][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 109.449822][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 109.450117][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 109.450397][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 109.450687][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 109.450993][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 109.451295][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 109.451584][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 109.451818][ T228] ? 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) 
[ 109.452097][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 109.452374][ T228] device_add (drivers/base/core.c:3672) 
[ 109.452637][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 109.452925][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 109.453244][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 109.453562][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 109.453897][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 109.454154][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 109.454412][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 109.454706][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 109.455004][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 109.455211][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 109.455478][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 109.455747][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 109.456067][ T228] ksys_write (fs/read_write.c:731) 
[ 109.456317][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 109.456638][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 109.456980][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  109.457316][  T228] RIP: 0033:0x7f25ce432b77
[ 109.457637][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  109.458629][  T228] RSP: 002b:00007ffece2c07d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  109.459044][  T228] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f25ce432b77
[  109.459383][  T228] RDX: 0000000000000005 RSI: 0000562b0905c340 RDI: 0000000000000001
[  109.459762][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[  109.460193][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000005
[  109.460620][  T228] R13: 00007f25ce4ee760 R14: 0000000000000005 R15: 00007f25ce4e99c0
| [  109.508889][  T228] ------------[ cut here ]------------
| [ 109.509317][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  109.509765][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  109.511487][  T228] Tainted: [W]=WARN
[  109.511669][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 109.511949][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 109.512257][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  109.512975][  T228] RSP: 0018:ffffc90000ab7910 EFLAGS: 00010246
[  109.513272][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  109.513762][  T228] RDX: 0000000000000000 RSI: ffff88800aa02c98 RDI: ffff88800b8a50a8
[  109.514092][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[  109.514547][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[  109.515084][  T228] R13: ffff88800aa02128 R14: ffff88800aa02008 R15: ffff88800aa02000
[  109.515610][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  109.516216][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  109.516647][  T228] CR2: 00007ffece2bdfc8 CR3: 000000000bedc001 CR4: 0000000000772ef0
[  109.517520][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  109.517982][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  109.518306][  T228] PKRU: 55555554
[  109.518474][  T228] Call Trace:
[  109.518754][  T228]  <TASK>
[ 109.518873][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 109.519126][ T228] ? __warn (kernel/panic.c:748) 
[ 109.519456][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 109.519688][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 109.520046][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 109.520234][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 109.520453][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 109.520687][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 109.521043][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 109.521331][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 109.521569][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 109.521795][ T228] register_netdevice (net/core/dev.c:11003) 
[ 109.522150][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 109.522392][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 109.522625][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 109.522921][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 109.523249][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 109.523537][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 109.523759][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 109.524120][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 109.524422][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 109.524643][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 109.524872][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 109.525106][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 109.525347][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 109.525522][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 109.525745][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 109.525984][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 109.526215][ T228] ksys_write (fs/read_write.c:731) 
[ 109.526418][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 109.526788][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 109.527042][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  109.527313][  T228] RIP: 0033:0x7f25ce432b77
[ 109.527552][ T228] Code: Unable to access opcode bytes at 0x7f25ce432b4d.

Code starting with the faulting instruction
===========================================
[  109.527827][  T228] RSP: 002b:00007ffece2bde78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  109.528292][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f25ce432b77
[  109.528620][  T228] RDX: 0000000000000002 RSI: 0000562b0905c340 RDI: 0000000000000001
[  109.529093][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[  109.529415][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000002
[  109.529743][  T228] R13: 00007f25ce4ee760 R14: 0000000000000002 R15: 00007f25ce4e99c0
| [  112.616333][  T228] ------------[ cut here ]------------
| [ 112.616643][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  112.617500][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  112.618308][  T228] Tainted: [W]=WARN
[  112.618471][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 112.618725][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 112.619001][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  112.619669][  T228] RSP: 0018:ffffc90000ab7910 EFLAGS: 00010246
[  112.619921][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  112.620270][  T228] RDX: 0000000000000000 RSI: ffff88800e4eac98 RDI: ffff88800b8a50a8
[  112.620568][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[  112.620850][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[  112.621163][  T228] R13: ffff88800e4ea128 R14: ffff88800e4ea008 R15: ffff88800e4ea000
[  112.621467][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  112.621800][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  112.622111][  T228] CR2: 0000562b0903b1f8 CR3: 000000000bedc002 CR4: 0000000000772ef0
[  112.622422][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  112.622704][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  112.623010][  T228] PKRU: 55555554
[  112.623167][  T228] Call Trace:
[  112.623313][  T228]  <TASK>
[ 112.623438][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 112.623633][ T228] ? __warn (kernel/panic.c:748) 
[ 112.623788][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 112.624003][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 112.624210][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 112.624370][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 112.624558][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 112.624770][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 112.624986][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 112.625249][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 112.625527][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 112.625764][ T228] register_netdevice (net/core/dev.c:11003) 
[ 112.626018][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 112.626270][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 112.626527][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 112.626831][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 112.627161][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 112.627480][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 112.627719][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 112.627975][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 112.628273][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 112.628505][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 112.628740][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 112.629096][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 112.629313][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 112.629469][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 112.629666][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 112.629870][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 112.630083][ T228] ksys_write (fs/read_write.c:731) 
[ 112.630232][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 112.630435][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 112.630637][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  112.630875][  T228] RIP: 0033:0x7f25ce432b77
[ 112.631087][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  112.631782][  T228] RSP: 002b:00007ffece2bde78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  112.632128][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f25ce432b77
[  112.632412][  T228] RDX: 0000000000000002 RSI: 0000562b0905c340 RDI: 0000000000000001
[  112.632700][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[  112.633008][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000002
[  112.633311][  T228] R13: 00007f25ce4ee760 R14: 0000000000000002 R15: 00007f25ce4e99c0
| [  115.278114][  T228] ------------[ cut here ]------------
| [ 115.278486][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  115.278940][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  115.279862][  T228] Tainted: [W]=WARN
[  115.280040][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 115.280319][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 115.280601][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  115.281373][  T228] RSP: 0018:ffffc90000ab7520 EFLAGS: 00010246
[  115.281660][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  115.281998][  T228] RDX: 0000000000000000 RSI: ffff88800b97ac98 RDI: ffff88800b8a50f8
[  115.282351][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[  115.282686][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[  115.283028][  T228] R13: ffff88800b97a128 R14: ffff88800b97a008 R15: ffff88800b97a000
[  115.283361][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  115.283756][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  115.284043][  T228] CR2: 00005559dd700aa8 CR3: 000000000bedc002 CR4: 0000000000772ef0
[  115.284530][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  115.284869][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  115.285207][  T228] PKRU: 55555554
[  115.285375][  T228] Call Trace:
[  115.285543][  T228]  <TASK>
[ 115.285662][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 115.285887][ T228] ? __warn (kernel/panic.c:748) 
[ 115.286068][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 115.286291][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 115.286528][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 115.286696][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 115.286916][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 115.287165][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 115.287403][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 115.287682][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 115.287908][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 115.288145][ T228] register_netdevice (net/core/dev.c:11003) 
[ 115.288379][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 115.288616][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 115.288856][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 115.289159][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 115.289376][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 115.289676][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 115.289981][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 115.290309][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 115.290561][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 115.290848][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 115.291084][ T228] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 115.291254][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 115.291484][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 115.291710][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 115.291936][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 115.292166][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 115.292411][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 115.292681][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 115.292902][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 115.293134][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 115.293355][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 115.293595][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 115.293829][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 115.294063][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 115.294284][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 115.294506][ T228] ? 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) 
[ 115.294735][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 115.294968][ T228] device_add (drivers/base/core.c:3672) 
[ 115.295199][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 115.295420][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 115.295653][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 115.295941][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 115.296238][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 115.296459][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 115.296689][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 115.296904][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 115.297140][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 115.297318][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 115.297546][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 115.297774][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 115.298012][ T228] ksys_write (fs/read_write.c:731) 
[ 115.298183][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 115.298421][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 115.298644][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  115.298926][  T228] RIP: 0033:0x7f25ce432b77
[ 115.299171][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  115.299930][  T228] RSP: 002b:00007ffece2c07d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  115.300269][  T228] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f25ce432b77
[  115.300595][  T228] RDX: 0000000000000005 RSI: 0000562b0905c340 RDI: 0000000000000001
[  115.300923][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[  115.301255][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000005
[  115.301583][  T228] R13: 00007f25ce4ee760 R14: 0000000000000005 R15: 00007f25ce4e99c0
| [  115.349835][  T228] ------------[ cut here ]------------
| [ 115.350619][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  115.351050][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  115.351902][  T228] Tainted: [W]=WARN
[  115.352097][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 115.352362][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 115.352652][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  115.353371][  T228] RSP: 0018:ffffc90000ab7910 EFLAGS: 00010246
[  115.353630][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  115.353969][  T228] RDX: 0000000000000000 RSI: ffff88800b8bac98 RDI: ffff88800b8a50a8
[  115.354280][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[  115.354580][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[  115.354882][  T228] R13: ffff88800b8ba128 R14: ffff88800b8ba008 R15: ffff88800b8ba000
[  115.355200][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  115.355558][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  115.355822][  T228] CR2: 00007f6d48230000 CR3: 000000000bedc002 CR4: 0000000000772ef0
[  115.356147][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  115.356449][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  115.356774][  T228] PKRU: 55555554
[  115.357101][  T228] Call Trace:
[  115.357279][  T228]  <TASK>
[ 115.357409][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 115.357635][ T228] ? __warn (kernel/panic.c:748) 
[ 115.357803][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 115.358043][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 115.358273][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 115.358456][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 115.358674][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 115.358912][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 115.359145][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 115.359407][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 115.359629][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 115.359840][ T228] register_netdevice (net/core/dev.c:11003) 
[ 115.360079][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 115.360316][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 115.360557][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 115.360846][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 115.361163][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 115.361452][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 115.361684][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 115.361941][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 115.362249][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 115.362485][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 115.362710][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 115.362940][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 115.363196][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 115.363391][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 115.363626][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 115.364042][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 115.364270][ T228] ksys_write (fs/read_write.c:731) 
[ 115.364448][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 115.364678][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 115.365011][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  115.365295][  T228] RIP: 0033:0x7f25ce432b77
[ 115.365521][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  115.366350][  T228] RSP: 002b:00007ffece2be338 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  115.366652][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f25ce432b77
[  115.367074][  T228] RDX: 0000000000000002 RSI: 0000562b0905c340 RDI: 0000000000000001
[  115.367379][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[  115.367805][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000002
[  115.368113][  T228] R13: 00007f25ce4ee760 R14: 0000000000000002 R15: 00007f25ce4e99c0
| [  118.174274][  T228] ------------[ cut here ]------------
| [ 118.174528][ T228] WARNING: CPU: 1 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  118.174919][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  118.175739][  T228] Tainted: [W]=WARN
[  118.175894][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 118.176152][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 118.176404][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  118.177101][  T228] RSP: 0018:ffffc90000ab7910 EFLAGS: 00010246
[  118.177354][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  118.177654][  T228] RDX: 0000000000000000 RSI: ffff88800aa02c98 RDI: ffff88800b8a50a8
[  118.177948][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[  118.178257][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[  118.178554][  T228] R13: ffff88800aa02128 R14: ffff88800aa02008 R15: ffff88800aa02000
[  118.178847][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  118.179232][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  118.179490][  T228] CR2: 00005559dd70d960 CR3: 000000000bedc005 CR4: 0000000000772ef0
[  118.179787][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  118.180086][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  118.180370][  T228] PKRU: 55555554
[  118.180513][  T228] Call Trace:
[  118.180656][  T228]  <TASK>
[ 118.180764][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 118.180972][ T228] ? __warn (kernel/panic.c:748) 
[ 118.181131][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 118.181334][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 118.181544][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 118.181699][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 118.181903][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 118.182128][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 118.182336][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 118.182589][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 118.182803][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 118.183018][ T228] register_netdevice (net/core/dev.c:11003) 
[ 118.183225][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 118.183437][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 118.183654][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 118.183914][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 118.184202][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 118.184476][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 118.184676][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 118.184883][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 118.185155][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 118.185354][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 118.185556][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 118.185760][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 118.186008][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 118.186167][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 118.186372][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 118.186585][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 118.186794][ T228] ksys_write (fs/read_write.c:731) 
[ 118.186946][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 118.187178][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 118.187385][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  118.187633][  T228] RIP: 0033:0x7f25ce432b77
[ 118.187837][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  118.188505][  T228] RSP: 002b:00007ffece2be338 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  118.188823][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f25ce432b77
[  118.189135][  T228] RDX: 0000000000000002 RSI: 0000562b0905c340 RDI: 0000000000000001
[  118.189430][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[  118.189708][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000002
[  118.190036][  T228] R13: 00007f25ce4ee760 R14: 0000000000000002 R15: 00007f25ce4e99c0
| [  120.792804][  T228] ------------[ cut here ]------------
| [ 120.793196][ T228] WARNING: CPU: 3 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  120.793673][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  120.794738][  T228] Tainted: [W]=WARN
[  120.794912][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 120.795200][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.795488][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  120.796280][  T228] RSP: 0018:ffffc90000ab7520 EFLAGS: 00010246
[  120.796565][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  120.796877][  T228] RDX: 0000000000000000 RSI: ffff88800e4eac98 RDI: ffff88800b8a50f8
[  120.797198][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[  120.797506][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[  120.797814][  T228] R13: ffff88800e4ea128 R14: ffff88800e4ea008 R15: ffff88800e4ea000
[  120.798154][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  120.798514][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  120.798772][  T228] CR2: 00007f25ce44fcb0 CR3: 000000000bedc005 CR4: 0000000000772ef0
[  120.799112][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  120.799425][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  120.799734][  T228] PKRU: 55555554
[  120.799891][  T228] Call Trace:
[  120.800060][  T228]  <TASK>
[ 120.800169][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.800411][ T228] ? __warn (kernel/panic.c:748) 
[ 120.800571][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.800789][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 120.801022][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 120.801187][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 120.801394][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 120.801614][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.801833][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 120.802131][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 120.802353][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 120.802569][ T228] register_netdevice (net/core/dev.c:11003) 
[ 120.802789][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 120.803021][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 120.803251][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 120.803517][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 120.803711][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 120.804045][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 120.804372][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 120.804666][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 120.804904][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 120.805205][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 120.805443][ T228] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 120.805612][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 120.805846][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 120.806107][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 120.806337][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 120.806561][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 120.806789][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 120.807083][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 120.807308][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 120.807531][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 120.807755][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 120.807986][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 120.808218][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 120.808472][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 120.808703][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 120.808938][ T228] ? 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) 
[ 120.809186][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 120.809420][ T228] device_add (drivers/base/core.c:3672) 
[ 120.809647][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 120.809872][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 120.810141][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 120.810445][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 120.810735][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 120.810971][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 120.811205][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 120.811426][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 120.811683][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 120.811865][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 120.812106][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 120.812367][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 120.812596][ T228] ksys_write (fs/read_write.c:731) 
[ 120.812768][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 120.813003][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 120.813217][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  120.813473][  T228] RIP: 0033:0x7f25ce432b77
[ 120.813688][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  120.814450][  T228] RSP: 002b:00007ffece2c07d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  120.814779][  T228] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f25ce432b77
[  120.815093][  T228] RDX: 0000000000000005 RSI: 0000562b0905c340 RDI: 0000000000000001
[  120.815411][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[  120.815720][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000005
[  120.816040][  T228] R13: 00007f25ce4ee760 R14: 0000000000000005 R15: 00007f25ce4e99c0
| [  120.853616][  T228] ------------[ cut here ]------------
| [ 120.854099][ T228] WARNING: CPU: 1 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  120.854486][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  120.855330][  T228] Tainted: [W]=WARN
[  120.855490][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 120.855739][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.855996][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  120.856671][  T228] RSP: 0018:ffffc90000ab7910 EFLAGS: 00010246
[  120.856924][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  120.857220][  T228] RDX: 0000000000000000 RSI: ffff88800b97ac98 RDI: ffff88800b8a50a8
[  120.857508][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[  120.857798][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[  120.858156][  T228] R13: ffff88800b97a128 R14: ffff88800b97a008 R15: ffff88800b97a000
[  120.858437][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  120.858796][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  120.859081][  T228] CR2: 00007ffece2bdfc8 CR3: 000000000bedc005 CR4: 0000000000772ef0
[  120.859376][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  120.859664][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  120.859950][  T228] PKRU: 55555554
[  120.860106][  T228] Call Trace:
[  120.860245][  T228]  <TASK>
[ 120.860345][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.860544][ T228] ? __warn (kernel/panic.c:748) 
[ 120.860700][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.860891][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 120.861105][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 120.861257][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 120.861454][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 120.861667][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.861875][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 120.862182][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 120.862421][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 120.862653][ T228] register_netdevice (net/core/dev.c:11003) 
[ 120.862887][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 120.863139][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 120.863385][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 120.863683][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 120.864001][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 120.864297][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 120.864527][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 120.864766][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 120.865067][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 120.865303][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 120.865533][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 120.865766][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 120.866010][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 120.866193][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 120.866425][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 120.866663][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 120.866899][ T228] ksys_write (fs/read_write.c:731) 
[ 120.867097][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 120.867339][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 120.867567][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  120.867849][  T228] RIP: 0033:0x7f25ce432b77
[ 120.868096][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  120.868910][  T228] RSP: 002b:00007ffece2bde78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  120.869266][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f25ce432b77
[  120.869602][  T228] RDX: 0000000000000002 RSI: 0000562b0905c340 RDI: 0000000000000001
[  120.869944][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[  120.870307][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000002
[  120.870645][  T228] R13: 00007f25ce4ee760 R14: 0000000000000002 R15: 00007f25ce4e99c0
| [  123.512224][  T228] ------------[ cut here ]------------
| [ 123.512522][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  123.512935][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  123.513807][  T228] Tainted: [W]=WARN
[  123.514004][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 123.514258][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 123.514540][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  123.515265][  T228] RSP: 0018:ffffc90000ab7910 EFLAGS: 00010246
[  123.515564][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  123.515886][  T228] RDX: 0000000000000000 RSI: ffff88800b8bac98 RDI: ffff88800b8a50a8
[  123.516225][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[  123.516563][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[  123.516890][  T228] R13: ffff88800b8ba128 R14: ffff88800b8ba008 R15: ffff88800b8ba000
[  123.517260][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  123.517643][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  123.517910][  T228] CR2: 00007f491b303a00 CR3: 000000000bedc002 CR4: 0000000000772ef0
[  123.518246][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  123.518601][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  123.518925][  T228] PKRU: 55555554
[  123.519114][  T228] Call Trace:
[  123.519274][  T228]  <TASK>
[ 123.519384][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 123.519593][ T228] ? __warn (kernel/panic.c:748) 
[ 123.519759][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 123.519982][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 123.520196][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 123.520356][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 123.520567][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 123.520783][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 123.521005][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 123.521263][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 123.521519][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 123.521726][ T228] register_netdevice (net/core/dev.c:11003) 
[ 123.521941][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 123.522168][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 123.522392][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 123.522661][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 123.522939][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 123.523206][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 123.523425][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 123.523635][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 123.523890][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 123.524100][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 123.524311][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 123.524517][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 123.524728][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 123.524900][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 123.525123][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 123.525339][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 123.525550][ T228] ksys_write (fs/read_write.c:731) 
[ 123.525715][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 123.525929][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 123.526145][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  123.526391][  T228] RIP: 0033:0x7f25ce432b77
[ 123.526608][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  123.527333][  T228] RSP: 002b:00007ffece2bde78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  123.527652][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f25ce432b77
[  123.527965][  T228] RDX: 0000000000000002 RSI: 0000562b0905c340 RDI: 0000000000000001
[  123.528268][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[  123.528558][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000002
[  123.528871][  T228] R13: 00007f25ce4ee760 R14: 0000000000000002 R15: 00007f25ce4e99c0
| [  125.839704][  T228] ------------[ cut here ]------------
| [ 125.841249][ T228] WARNING: CPU: 1 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  125.842043][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  125.843557][  T228] Tainted: [W]=WARN
[  125.843813][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 125.844165][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 125.844480][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  125.845336][  T228] RSP: 0018:ffffc90000ab7520 EFLAGS: 00010246
[  125.845634][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  125.845988][  T228] RDX: 0000000000000000 RSI: ffff88800aa02c98 RDI: ffff88800b8a50f8
[  125.846336][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[  125.846671][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[  125.847021][  T228] R13: ffff88800aa02128 R14: ffff88800aa02008 R15: ffff88800aa02000
[  125.847418][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  125.847812][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  125.848112][  T228] CR2: 0000562b09033000 CR3: 000000000bedc001 CR4: 0000000000772ef0
[  125.848461][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  125.848794][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  125.849155][  T228] PKRU: 55555554
[  125.849345][  T228] Call Trace:
[  125.849520][  T228]  <TASK>
[ 125.849913][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 125.850237][ T228] ? __warn (kernel/panic.c:748) 
[ 125.850500][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 125.850854][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 125.851245][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 125.851523][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 125.851896][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 125.852318][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 125.852709][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 125.853191][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 125.853577][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 125.853977][ T228] register_netdevice (net/core/dev.c:11003) 
[ 125.854365][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 125.854760][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 125.855187][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 125.855678][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 125.855999][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 125.856486][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 125.856873][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 125.857199][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 125.857467][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 125.857844][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 125.858092][ T228] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 125.858307][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 125.858566][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 125.858800][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 125.859054][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 125.859291][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 125.859529][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 125.859806][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 125.860085][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 125.860325][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 125.860550][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 125.860840][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 125.861214][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 125.861588][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 125.861937][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 125.862319][ T228] ? 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) 
[ 125.862703][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 125.863096][ T228] device_add (drivers/base/core.c:3672) 
[ 125.863470][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 125.863826][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 125.864249][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 125.864735][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 125.865237][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 125.865608][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 125.866010][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 125.866377][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 125.866754][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 125.867084][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 125.867467][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 125.867830][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 125.868089][ T228] ksys_write (fs/read_write.c:731) 
[ 125.868287][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 125.868530][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 125.868759][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  125.869073][  T228] RIP: 0033:0x7f25ce432b77
[ 125.869368][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  125.870154][  T228] RSP: 002b:00007ffece2c07d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  125.870505][  T228] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f25ce432b77
[  125.870845][  T228] RDX: 0000000000000005 RSI: 0000562b0905c340 RDI: 0000000000000001
[  125.871210][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[  125.871565][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000005
[  125.871897][  T228] R13: 00007f25ce4ee760 R14: 0000000000000005 R15: 00007f25ce4e99c0
| [  125.953180][  T228] ------------[ cut here ]------------
| [ 125.953593][ T228] WARNING: CPU: 1 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  125.954025][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  125.954905][  T228] Tainted: [W]=WARN
[  125.955428][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 125.955742][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 125.956283][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  125.957386][  T228] RSP: 0018:ffffc90000ab7910 EFLAGS: 00010246
[  125.957794][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  125.958298][  T228] RDX: 0000000000000000 RSI: ffff88800e4eac98 RDI: ffff88800b8a50a8
[  125.958756][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[  125.959255][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[  125.959767][  T228] R13: ffff88800e4ea128 R14: ffff88800e4ea008 R15: ffff88800e4ea000
[  125.960269][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  125.960836][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  125.961268][  T228] CR2: 0000562b09033000 CR3: 000000000bedc001 CR4: 0000000000772ef0
[  125.961735][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  125.962216][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  125.962675][  T228] PKRU: 55555554
[  125.962915][  T228] Call Trace:
[  125.963188][  T228]  <TASK>
[ 125.963369][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 125.963706][ T228] ? __warn (kernel/panic.c:748) 
[ 125.963978][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 125.964312][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 125.964645][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 125.964896][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 125.965234][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 125.965596][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 125.965987][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 125.966394][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 125.966728][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 125.967056][ T228] register_netdevice (net/core/dev.c:11003) 
[ 125.967376][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 125.967707][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 125.968075][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 125.968480][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 125.968928][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 125.969344][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 125.969658][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 125.970018][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 125.970434][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 125.970745][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 125.971081][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 125.971402][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 125.971721][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 125.972000][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 125.972324][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 125.972658][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 125.973023][ T228] ksys_write (fs/read_write.c:731) 
[ 125.973278][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 125.973633][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 125.974009][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  125.974425][  T228] RIP: 0033:0x7f25ce432b77
[ 125.974771][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  125.975932][  T228] RSP: 002b:00007ffece2be0d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  125.976413][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f25ce432b77
[  125.976769][  T228] RDX: 0000000000000002 RSI: 0000562b0905c340 RDI: 0000000000000001
[  125.977094][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[  125.977418][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000002
[  125.977758][  T228] R13: 00007f25ce4ee760 R14: 0000000000000002 R15: 00007f25ce4e99c0
| [  128.349418][  T228] ------------[ cut here ]------------
| [ 128.349782][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  128.350232][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  128.351181][  T228] Tainted: [W]=WARN
[  128.351431][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 128.351709][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 128.352538][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  128.353359][  T228] RSP: 0018:ffffc90000ab7910 EFLAGS: 00010246
[  128.353706][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  128.354121][  T228] RDX: 0000000000000000 RSI: ffff88800b97ac98 RDI: ffff88800b8a50a8
[  128.354423][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[  128.354806][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[  128.355143][  T228] R13: ffff88800b97a128 R14: ffff88800b97a008 R15: ffff88800b97a000
[  128.355453][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  128.355952][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  128.356228][  T228] CR2: 0000562b0903b1f8 CR3: 000000000bedc001 CR4: 0000000000772ef0
[  128.356574][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  128.356996][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  128.357398][  T228] PKRU: 55555554
[  128.357609][  T228] Call Trace:
[  128.357826][  T228]  <TASK>
[ 128.358049][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 128.358304][ T228] ? __warn (kernel/panic.c:748) 
[ 128.358477][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 128.358736][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 128.359094][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 128.359316][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 128.359582][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 128.359894][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 128.360130][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 128.360389][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 128.360656][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 128.360985][ T228] register_netdevice (net/core/dev.c:11003) 
[ 128.361203][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 128.361478][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 128.361775][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 128.362163][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 128.362452][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 128.362787][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 128.363065][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 128.363293][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 128.363554][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 128.363871][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 128.364125][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 128.364338][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 128.364555][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 128.364739][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 128.364948][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 128.365187][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 128.365463][ T228] ksys_write (fs/read_write.c:731) 
[ 128.365656][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 128.365926][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 128.366191][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  128.366471][  T228] RIP: 0033:0x7f25ce432b77
[ 128.366755][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  128.367541][  T228] RSP: 002b:00007ffece2be0d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  128.367966][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f25ce432b77
[  128.368303][  T228] RDX: 0000000000000002 RSI: 0000562b0905c340 RDI: 0000000000000001
[  128.368637][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[  128.369094][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000002
[  128.369387][  T228] R13: 00007f25ce4ee760 R14: 0000000000000002 R15: 00007f25ce4e99c0
| [  130.435290][  T228] ------------[ cut here ]------------
| [ 130.435677][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  130.436140][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  130.437237][  T228] Tainted: [W]=WARN
[  130.437427][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 130.437716][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 130.438024][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  130.438842][  T228] RSP: 0018:ffffc90000ab7520 EFLAGS: 00010246
[  130.439148][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  130.439506][  T228] RDX: 0000000000000000 RSI: ffff88800b8bac98 RDI: ffff88800b8a50f8
[  130.439823][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[  130.440158][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[  130.440480][  T228] R13: ffff88800b8ba128 R14: ffff88800b8ba008 R15: ffff88800b8ba000
[  130.440798][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  130.441194][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  130.441484][  T228] CR2: 0000562b09033000 CR3: 000000000bedc002 CR4: 0000000000772ef0
[  130.441829][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  130.442178][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  130.442510][  T228] PKRU: 55555554
[  130.442672][  T228] Call Trace:
[  130.442834][  T228]  <TASK>
[ 130.442945][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 130.443210][ T228] ? __warn (kernel/panic.c:748) 
[ 130.443386][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 130.443599][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 130.443822][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 130.444001][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 130.444217][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 130.444462][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 130.444702][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 130.445015][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 130.445256][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 130.445504][ T228] register_netdevice (net/core/dev.c:11003) 
[ 130.445728][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 130.445991][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 130.446225][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 130.446505][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 130.446697][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 130.447024][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 130.447300][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 130.447577][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 130.447807][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 130.448105][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 130.448371][ T228] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 130.448542][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 130.448759][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 130.449091][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 130.449326][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 130.449564][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 130.449816][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 130.450108][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 130.450341][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 130.450560][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 130.450779][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 130.451033][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 130.451260][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 130.451488][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 130.451715][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 130.451927][ T228] ? 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) 
[ 130.452167][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 130.452470][ T228] device_add (drivers/base/core.c:3672) 
[ 130.452698][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 130.452933][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 130.453181][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 130.453476][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 130.453770][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 130.454005][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 130.454256][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 130.454463][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 130.454677][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 130.454853][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 130.455139][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 130.455372][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 130.455597][ T228] ksys_write (fs/read_write.c:731) 
[ 130.455769][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 130.456000][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 130.456218][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  130.456491][  T228] RIP: 0033:0x7f25ce432b77
[ 130.456727][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  130.457751][  T228] RSP: 002b:00007ffece2c07d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  130.458122][  T228] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f25ce432b77
[  130.458437][  T228] RDX: 0000000000000005 RSI: 0000562b0905c340 RDI: 0000000000000001
[  130.458758][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[  130.459117][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000005
[  130.459437][  T228] R13: 00007f25ce4ee760 R14: 0000000000000005 R15: 00007f25ce4e99c0
| [  130.601103][  T228] ------------[ cut here ]------------
| [ 130.601670][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  130.602299][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  130.603597][  T228] Tainted: [W]=WARN
[  130.603844][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 130.604256][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 130.604662][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  130.605834][  T228] RSP: 0018:ffffc90000ab7910 EFLAGS: 00010246
[  130.606256][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  130.606721][  T228] RDX: 0000000000000000 RSI: ffff88800aa02c98 RDI: ffff88800b8a50a8
[  130.607198][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[  130.607634][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[  130.608115][  T228] R13: ffff88800aa02128 R14: ffff88800aa02008 R15: ffff88800aa02000
[  130.608559][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  130.609128][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  130.610006][  T228] CR2: 00007f25ce388210 CR3: 000000000bedc002 CR4: 0000000000772ef0
[  130.610505][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  130.611012][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  130.611495][  T228] PKRU: 55555554
[  130.611757][  T228] Call Trace:
[  130.612036][  T228]  <TASK>
[ 130.612229][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 130.612547][ T228] ? __warn (kernel/panic.c:748) 
[ 130.612794][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 130.613147][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 130.613487][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 130.613750][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 130.614108][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 130.614471][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 130.614862][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 130.615306][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 130.615652][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 130.616047][ T228] register_netdevice (net/core/dev.c:11003) 
[ 130.616393][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 130.616740][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 130.617124][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 130.617576][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 130.618067][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 130.618495][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 130.618834][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 130.619211][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 130.619633][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 130.619978][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 130.620314][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 130.620625][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 130.620937][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 130.621221][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 130.621555][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 130.621894][ T228] ? do_user_addr_fault (./include/linux/mmap_lock.h:218 arch/x86/mm/fault.c:1416) 
[ 130.622249][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 130.622590][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 130.622966][ T228] ksys_write (fs/read_write.c:731) 
[ 130.623237][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 130.623552][ T228] ? do_user_addr_fault (./include/linux/mmap_lock.h:218 arch/x86/mm/fault.c:1416) 
[ 130.623870][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 130.624218][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  130.624616][  T228] RIP: 0033:0x7f25ce432b77
[ 130.624949][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  130.626026][  T228] RSP: 002b:00007ffece2c07d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  130.626499][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f25ce432b77
[  130.626981][  T228] RDX: 0000000000000002 RSI: 0000562b0905c340 RDI: 0000000000000001
[  130.627474][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[  130.627991][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000002
[  130.628472][  T228] R13: 00007f25ce4ee760 R14: 0000000000000002 R15: 00007f25ce4e99c0
| [  131.291595][  T228] ------------[ cut here ]------------
| [ 131.291902][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  131.292424][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  131.293274][  T228] Tainted: [W]=WARN
[  131.293456][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 131.293716][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 131.293999][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  131.294759][  T228] RSP: 0018:ffffc90000ab7910 EFLAGS: 00010246
[  131.295044][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  131.295346][  T228] RDX: 0000000000000000 RSI: ffff88800e4eac98 RDI: ffff88800b8a50a8
[  131.295664][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[  131.295982][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[  131.296293][  T228] R13: ffff88800e4ea128 R14: ffff88800e4ea008 R15: ffff88800e4ea000
[  131.296619][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  131.296988][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  131.297262][  T228] CR2: 0000562b0905c340 CR3: 000000000bedc005 CR4: 0000000000772ef0
[  131.297588][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  131.297905][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  131.298237][  T228] PKRU: 55555554
[  131.298406][  T228] Call Trace:
[  131.298573][  T228]  <TASK>
[ 131.298690][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 131.298929][ T228] ? __warn (kernel/panic.c:748) 
[ 131.299109][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 131.299321][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 131.299553][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 131.299724][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 131.299943][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 131.300187][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 131.300424][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 131.300700][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 131.300923][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 131.301147][ T228] register_netdevice (net/core/dev.c:11003) 
[ 131.301368][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 131.301586][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 131.301819][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 131.302100][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 131.302386][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 131.302648][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 131.302900][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 131.303134][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 131.303407][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 131.303618][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 131.303834][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 131.304064][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 131.304277][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 131.304460][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 131.304671][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 131.304879][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 131.305107][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 131.305331][ T228] ksys_write (fs/read_write.c:731) 
[ 131.305490][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 131.305699][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 131.305943][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 131.306167][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  131.306416][  T228] RIP: 0033:0x7f25ce432b77
[ 131.306637][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  131.307411][  T228] RSP: 002b:00007ffece2c07d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  131.307750][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f25ce432b77
[  131.308098][  T228] RDX: 0000000000000002 RSI: 0000562b0905c340 RDI: 0000000000000001
[  131.308417][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[  131.308740][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000002
[  131.309097][  T228] R13: 00007f25ce4ee760 R14: 0000000000000002 R15: 00007f25ce4e99c0
| [  139.668309][  T228] ------------[ cut here ]------------
| [ 139.668706][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  139.670473][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  139.671822][  T228] Tainted: [W]=WARN
[  139.672099][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 139.672506][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 139.672933][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  139.674085][  T228] RSP: 0018:ffffc90000ab7910 EFLAGS: 00010246
[  139.674510][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  139.675016][  T228] RDX: 0000000000000000 RSI: ffff88800b97ac98 RDI: ffff88800b8a50a8
[  139.675515][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[  139.676043][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[  139.676577][  T228] R13: ffff88800b97a128 R14: ffff88800b97a008 R15: ffff88800b97a000
[  139.677098][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  139.677674][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  139.678100][  T228] CR2: 00007f25ce44fcb0 CR3: 000000000bedc003 CR4: 0000000000772ef0
[  139.678592][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  139.679116][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  139.679601][  T228] PKRU: 55555554
[  139.679850][  T228] Call Trace:
[  139.680116][  T228]  <TASK>
[ 139.680289][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 139.680621][ T228] ? __warn (kernel/panic.c:748) 
[ 139.680880][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 139.681239][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 139.681583][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 139.681833][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 139.682180][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 139.682553][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 139.682899][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 139.683330][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 139.683671][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 139.684016][ T228] register_netdevice (net/core/dev.c:11003) 
[ 139.684349][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 139.684698][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 139.685067][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 139.685489][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 139.685975][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 139.686403][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 139.686732][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 139.687090][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 139.687511][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 139.687825][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 139.688162][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 139.688489][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 139.688832][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 139.689111][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 139.689435][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 139.689769][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 139.690117][ T228] ksys_write (fs/read_write.c:731) 
[ 139.690364][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 139.690707][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 139.691054][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  139.691437][  T228] RIP: 0033:0x7f25ce432b77
[ 139.691759][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  139.692843][  T228] RSP: 002b:00007ffece2c07d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  139.693340][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f25ce432b77
[  139.693803][  T228] RDX: 0000000000000002 RSI: 0000562b0905c340 RDI: 0000000000000001
[  139.694287][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[  139.694748][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000002
[  139.695234][  T228] R13: 00007f25ce4ee760 R14: 0000000000000002 R15: 00007f25ce4e99c0
| [  142.308350][  T228] ------------[ cut here ]------------
| [ 142.308782][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  142.309339][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  142.310444][  T228] Tainted: [W]=WARN
[  142.310633][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 142.310912][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 142.311288][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  142.312102][  T228] RSP: 0018:ffffc90000ab7520 EFLAGS: 00010246
[  142.312388][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  142.312731][  T228] RDX: 0000000000000000 RSI: ffff88800b8bac98 RDI: ffff88800b8a50f8
[  142.313079][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[  142.313419][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[  142.313752][  T228] R13: ffff88800b8ba128 R14: ffff88800b8ba008 R15: ffff88800b8ba000
[  142.314131][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  142.314515][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  142.314787][  T228] CR2: 00007f65010d1000 CR3: 000000000bedc006 CR4: 0000000000772ef0
[  142.315167][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  142.315498][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  142.315826][  T228] PKRU: 55555554
[  142.316034][  T228] Call Trace:
[  142.316209][  T228]  <TASK>
[ 142.316331][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 142.316575][ T228] ? __warn (kernel/panic.c:748) 
[ 142.316751][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 142.317001][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 142.317238][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 142.317412][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 142.317643][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 142.317881][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 142.318142][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 142.318425][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 142.318663][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 142.318913][ T228] register_netdevice (net/core/dev.c:11003) 
[ 142.319167][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 142.319404][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 142.319648][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 142.319927][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 142.320137][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 142.320452][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 142.320766][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 142.321104][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 142.321365][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 142.321658][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 142.321916][ T228] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 142.322124][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 142.322411][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 142.322646][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 142.322888][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 142.323145][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 142.323375][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 142.323644][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 142.323879][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 142.324134][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 142.324363][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 142.324589][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 142.324837][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 142.325122][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 142.325347][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 142.325593][ T228] ? 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) 
[ 142.325844][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 142.326163][ T228] device_add (drivers/base/core.c:3672) 
[ 142.326396][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 142.326619][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 142.326869][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 142.327192][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 142.327476][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 142.327702][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 142.327985][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 142.328215][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 142.328455][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 142.328639][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 142.328893][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 142.329160][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 142.329390][ T228] ksys_write (fs/read_write.c:731) 
[ 142.329574][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 142.329807][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 142.330074][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  142.330348][  T228] RIP: 0033:0x7f25ce432b77
[ 142.330579][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  142.331360][  T228] RSP: 002b:00007ffece2c07d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  142.331687][  T228] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f25ce432b77
[  142.332046][  T228] RDX: 0000000000000005 RSI: 0000562b0905c340 RDI: 0000000000000001
[  142.332369][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[  142.332701][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000005
[  142.333077][  T228] R13: 00007f25ce4ee760 R14: 0000000000000005 R15: 00007f25ce4e99c0
| [  142.452911][  T228] ------------[ cut here ]------------
| [ 142.453303][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  142.453750][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  142.454653][  T228] Tainted: [W]=WARN
[  142.454843][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 142.455121][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 142.455389][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  142.456105][  T228] RSP: 0018:ffffc90000ab7910 EFLAGS: 00010246
[  142.456379][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  142.456680][  T228] RDX: 0000000000000000 RSI: ffff88800e4eac98 RDI: ffff88800b8a50a8
[  142.457013][  T228] RBP: ffffffffa8f23440 R08: 0000000000000000 R09: fffffbfff4dbd83c
[  142.457327][  T228] R10: ffffffffa6dec1e7 R11: ffff88800b8a45c0 R12: 0000000000000000
[  142.457638][  T228] R13: ffff88800e4ea128 R14: ffff88800e4ea008 R15: ffff88800e4ea000
[  142.458005][  T228] FS:  00007f25ce2f1740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  142.458599][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  142.458900][  T228] CR2: 0000562b0905c340 CR3: 000000000bedc002 CR4: 0000000000772ef0
[  142.459231][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  142.459552][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  142.459859][  T228] PKRU: 55555554
[  142.460035][  T228] Call Trace:
[  142.460200][  T228]  <TASK>
[ 142.460318][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 142.460533][ T228] ? __warn (kernel/panic.c:748) 
[ 142.460695][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 142.460909][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 142.461142][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 142.461311][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 142.461524][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 142.461743][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 142.461970][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 142.462252][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 142.462482][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 142.462720][ T228] register_netdevice (net/core/dev.c:11003) 
[ 142.462942][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 142.463195][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 142.463441][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 142.463735][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 142.464038][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 142.464324][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 142.464542][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 142.464766][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 142.465047][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 142.465293][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 142.465510][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 142.465734][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 142.465950][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 142.466134][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 142.466357][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 142.466574][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 142.466799][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 142.467037][ T228] ksys_write (fs/read_write.c:731) 
[ 142.467210][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 142.467422][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 142.467652][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 142.467862][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  142.468138][  T228] RIP: 0033:0x7f25ce432b77
[ 142.468366][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  142.469118][  T228] RSP: 002b:00007ffece2c07d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  142.469441][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f25ce432b77
[  142.469746][  T228] RDX: 0000000000000002 RSI: 0000562b0905c340 RDI: 0000000000000001
[  142.470072][  T228] RBP: 0000562b0905c340 R08: 0000000000000000 R09: 00007f25ce4a54e0
[  142.470392][  T228] R10: 00007f25ce4a53e0 R11: 0000000000000246 R12: 0000000000000002


Finger prints:
__netdev_update_features:register_netdevice:nsim_create:__nsim_dev_port_add:nsim_dev_port_add_all
__netdev_update_features:register_netdevice:nsim_create:__nsim_dev_port_add:nsim_drv_port_add