======================================
| 0
| xx__-> [    8.887250][  T227] ------------[ cut here ]------------
| [ 8.887579][ T227] WARNING: CPU: 1 PID: 227 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) 
| [    8.888000][  T227] Modules linked in: netdevsim
[    8.888664][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 8.888930][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 8.889215][ T227] 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
[    8.889937][  T227] RSP: 0018:ffffc90000ad7520 EFLAGS: 00010246
[    8.890230][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    8.890540][  T227] RDX: 0000000000000000 RSI: ffff8880098fac98 RDI: ffff88800b5fae38
[    8.890855][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[    8.891178][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[    8.891492][  T227] R13: ffff8880098fa128 R14: ffff8880098fa008 R15: ffff8880098fa000
[    8.891805][  T227] FS:  00007fd229226740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[    8.892175][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    8.892450][  T227] CR2: 0000559eef310338 CR3: 000000000b4aa002 CR4: 0000000000772ef0
[    8.892763][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    8.893077][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    8.893400][  T227] PKRU: 55555554
[    8.893561][  T227] Call Trace:
[    8.893718][  T227]  <TASK>
[ 8.893828][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 8.894047][ T227] ? __warn (kernel/panic.c:748) 
[ 8.894207][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 8.894413][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 8.894623][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 8.894778][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 8.894984][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 8.895243][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 8.895456][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 8.895719][ T227] ? _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) 
[ 8.895931][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 8.896150][ T227] register_netdevice (net/core/dev.c:11003) 
[ 8.896367][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 8.896587][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 8.896808][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 8.897081][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 8.897241][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 8.897515][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 8.897778][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 8.898051][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 8.898266][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 8.898524][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 8.898732][ T227] ? 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)) 
[ 8.898892][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 8.899114][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 8.899326][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 8.899534][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 8.899739][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 8.899945][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 8.900208][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 8.900418][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 8.900618][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 8.900822][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 8.901040][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 8.901255][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 8.901459][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 8.901660][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 8.901866][ T227] ? 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) 
[ 8.902094][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 8.902308][ T227] device_add (drivers/base/core.c:3672) 
[ 8.902519][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 8.902722][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 8.902937][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 8.903210][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 8.903476][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 8.903681][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 8.903890][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 8.904103][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 8.904314][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 8.904477][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 8.904685][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 8.904885][ T227] ? 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) 
[ 8.905110][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 8.905329][ T227] ksys_write (fs/read_write.c:731) 
[ 8.905489][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 8.905690][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 8.905904][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 8.906119][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    8.906369][  T227] RIP: 0033:0x7fd229367b77
[ 8.906580][ T227] 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
[    8.907292][  T227] RSP: 002b:00007ffc85d31858 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    8.907600][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fd229367b77
[    8.907904][  T227] RDX: 0000000000000004 RSI: 0000559eef30f330 RDI: 0000000000000001
[    8.908221][  T227] RBP: 0000559eef30f330 R08: 0000000000000003 R09: 0000000000000077
[    8.908524][  T227] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000004
[    8.908828][  T227] R13: 00007fd229423760 R14: 0000000000000004 R15: 00007fd22941e9c0
| [   13.807134][  T227] ------------[ cut here ]------------
| [ 13.807442][ T227] WARNING: CPU: 3 PID: 227 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) 
| [   13.807849][  T227] Modules linked in: netdevsim [last unloaded: ip6_udp_tunnel]
| [   13.808593][  T227] Tainted: [W]=WARN
[   13.808763][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 13.809029][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 13.809290][ T227] 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
[   13.809995][  T227] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[   13.810263][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   13.810568][  T227] RDX: 0000000000000000 RSI: ffff88800e9eac98 RDI: ffff88800b5fade8
[   13.810870][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[   13.811179][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[   13.811487][  T227] R13: ffff88800e9ea128 R14: ffff88800e9ea008 R15: ffff88800e9ea000
[   13.811794][  T227] FS:  00007fd229226740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   13.812159][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   13.812435][  T227] CR2: 0000558e0ce0958d CR3: 000000000b4aa006 CR4: 0000000000772ef0
[   13.812743][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   13.813055][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   13.813356][  T227] PKRU: 55555554
[   13.813516][  T227] Call Trace:
[   13.813777][  T227]  <TASK>
[ 13.813882][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 13.814096][ T227] ? __warn (kernel/panic.c:748) 
[ 13.814257][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 13.814462][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 13.814674][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 13.814848][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 13.815067][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 13.815286][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 13.815497][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 13.815752][ T227] ? _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) 
[ 13.815959][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 13.816178][ T227] register_netdevice (net/core/dev.c:11003) 
[ 13.816390][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 13.816604][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 13.816824][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 13.817094][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 13.817374][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 13.817636][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 13.817845][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 13.818068][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 13.818330][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 13.818532][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 13.818735][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 13.818941][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 13.819162][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 13.819329][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 13.819535][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 13.819747][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 13.819962][ T227] ksys_write (fs/read_write.c:731) 
[ 13.820127][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 13.820340][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 13.820545][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   13.820799][  T227] RIP: 0033:0x7fd229367b77
[ 13.821006][ T227] 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
[   13.821715][  T227] RSP: 002b:00007ffc85d31758 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   13.822027][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd229367b77
[   13.822340][  T227] RDX: 0000000000000002 RSI: 0000559eef30f330 RDI: 0000000000000001
[   13.822640][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[   13.822940][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000002
[   13.823248][  T227] R13: 00007fd229423760 R14: 0000000000000002 R15: 00007fd22941e9c0
| [   19.018688][  T227] ------------[ cut here ]------------
| [ 19.019125][ T227] WARNING: CPU: 0 PID: 227 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) 
| [   19.019577][  T227] Modules linked in: netdevsim [last unloaded: netdevsim]
| [   19.020402][  T227] Tainted: [W]=WARN
[   19.020593][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.020869][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 19.021243][ T227] 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
[   19.022010][  T227] RSP: 0018:ffffc90000ad7520 EFLAGS: 00010246
[   19.022485][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   19.022788][  T227] RDX: 0000000000000000 RSI: ffff88800a64ac98 RDI: ffff88800b5fae38
[   19.023181][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[   19.023483][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[   19.023786][  T227] R13: ffff88800a64a128 R14: ffff88800a64a008 R15: ffff88800a64a000
[   19.024176][  T227] FS:  00007fd229226740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   19.024527][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.024778][  T227] CR2: 00007fd2293da733 CR3: 000000000b4aa005 CR4: 0000000000772ef0
[   19.025186][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   19.025483][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   19.025782][  T227] PKRU: 55555554
[   19.025935][  T227] Call Trace:
[   19.026218][  T227]  <TASK>
[ 19.026324][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 19.026528][ T227] ? __warn (kernel/panic.c:748) 
[ 19.026689][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 19.026894][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 19.027235][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 19.027393][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 19.027598][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 19.027815][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 19.028153][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 19.028418][ T227] ? _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) 
[ 19.028626][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 19.028834][ T227] register_netdevice (net/core/dev.c:11003) 
[ 19.029186][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 19.029404][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 19.029623][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 19.029882][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 19.030222][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 19.030492][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 19.030751][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 19.031099][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 19.031320][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 19.031575][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 19.031787][ T227] ? 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)) 
[ 19.031942][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 19.032267][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 19.032491][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 19.032697][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 19.032901][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 19.033117][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 19.033370][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 19.033574][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 19.033775][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 19.033978][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 19.034190][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 19.034400][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 19.034601][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 19.034809][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 19.035024][ T227] ? 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) 
[ 19.035237][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 19.035445][ T227] device_add (drivers/base/core.c:3672) 
[ 19.035652][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 19.035853][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 19.036077][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 19.036344][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 19.036625][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 19.036845][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 19.037081][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 19.037299][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 19.037522][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 19.037684][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 19.037896][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 19.038110][ T227] ? 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) 
[ 19.038322][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 19.038533][ T227] ksys_write (fs/read_write.c:731) 
[ 19.038689][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 19.038890][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 19.039115][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 19.039323][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.039575][  T227] RIP: 0033:0x7fd229367b77
[ 19.039783][ T227] 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
[   19.040496][  T227] RSP: 002b:00007ffc85d34ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   19.040804][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fd229367b77
[   19.041117][  T227] RDX: 0000000000000004 RSI: 0000559eef30f330 RDI: 0000000000000001
[   19.041416][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[   19.041715][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000004
[   19.042040][  T227] R13: 00007fd229423760 R14: 0000000000000004 R15: 00007fd22941e9c0
| [   19.075157][  T227] ------------[ cut here ]------------
| [ 19.075479][ T227] WARNING: CPU: 2 PID: 227 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) 
| [   19.075860][  T227] Modules linked in: netdevsim [last unloaded: netdevsim]
| [   19.077794][  T227] Tainted: [W]=WARN
[   19.077949][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.078219][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 19.078471][ T227] 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
[   19.079130][  T227] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[   19.079379][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   19.079667][  T227] RDX: 0000000000000000 RSI: ffff8880025b2c98 RDI: ffff88800b5fade8
[   19.079949][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[   19.080245][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[   19.080537][  T227] R13: ffff8880025b2128 R14: ffff8880025b2008 R15: ffff8880025b2000
[   19.080822][  T227] FS:  00007fd229226740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   19.081164][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.081408][  T227] CR2: 00007f5b9b523000 CR3: 000000000b4aa004 CR4: 0000000000772ef0
[   19.081697][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   19.081987][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   19.082291][  T227] PKRU: 55555554
[   19.082450][  T227] Call Trace:
[   19.082842][  T227]  <TASK>
[ 19.082955][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 19.083166][ T227] ? __warn (kernel/panic.c:748) 
[ 19.083322][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 19.083525][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 19.083839][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 19.083995][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 19.084200][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 19.084410][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 19.084725][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 19.084974][ T227] ? _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) 
[ 19.085189][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 19.085391][ T227] register_netdevice (net/core/dev.c:11003) 
[ 19.085593][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 19.085803][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 19.086029][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 19.086294][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 19.086565][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 19.086820][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 19.087030][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 19.087354][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 19.087604][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 19.087804][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 19.088129][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 19.088336][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 19.088541][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 19.088705][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 19.088912][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 19.089147][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 19.089353][ T227] ksys_write (fs/read_write.c:731) 
[ 19.089510][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 19.089846][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 19.090063][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.090319][  T227] RIP: 0033:0x7fd229367b77
[ 19.090521][ T227] 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
[   19.091183][  T227] RSP: 002b:00007ffc85d34ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   19.091476][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd229367b77
[   19.091766][  T227] RDX: 0000000000000002 RSI: 0000559eef30f330 RDI: 0000000000000001
[   19.092054][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[   19.092350][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000002
[   19.092757][  T227] R13: 00007fd229423760 R14: 0000000000000002 R15: 00007fd22941e9c0
| [   25.243174][  T227] ------------[ cut here ]------------
| [ 25.243479][ T227] WARNING: CPU: 0 PID: 227 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) 
| [   25.243887][  T227] Modules linked in: netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   25.244802][  T227] Tainted: [W]=WARN
[   25.244960][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 25.245314][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.245579][ T227] 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
[   25.246426][  T227] RSP: 0018:ffffc90000ad7520 EFLAGS: 00010246
[   25.246688][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   25.246999][  T227] RDX: 0000000000000000 RSI: ffff888004f0ac98 RDI: ffff88800b5fae38
[   25.247397][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[   25.247725][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[   25.248162][  T227] R13: ffff888004f0a128 R14: ffff888004f0a008 R15: ffff888004f0a000
[   25.248472][  T227] FS:  00007fd229226740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   25.248824][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.249095][  T227] CR2: 00007fd2293da733 CR3: 000000000b4aa001 CR4: 0000000000772ef0
[   25.249409][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.249715][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.250037][  T227] PKRU: 55555554
[   25.250195][  T227] Call Trace:
[   25.250352][  T227]  <TASK>
[ 25.250458][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.250666][ T227] ? __warn (kernel/panic.c:748) 
[ 25.250827][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.251045][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 25.251262][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 25.251422][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 25.251629][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 25.251850][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.252080][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 25.252356][ T227] ? _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) 
[ 25.252592][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 25.252803][ T227] register_netdevice (net/core/dev.c:11003) 
[ 25.253028][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 25.253254][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 25.253477][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 25.253738][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 25.253902][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 25.254182][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 25.254448][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 25.254714][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 25.254927][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 25.255197][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 25.255413][ T227] ? 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)) 
[ 25.255570][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 25.255785][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 25.255999][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 25.256219][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 25.256426][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 25.256633][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 25.256887][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 25.257100][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 25.257303][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 25.257507][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 25.257712][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 25.257922][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 25.258135][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 25.258343][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 25.258548][ T227] ? 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) 
[ 25.258760][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 25.258966][ T227] device_add (drivers/base/core.c:3672) 
[ 25.259183][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 25.259386][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 25.259601][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 25.259867][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 25.260142][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 25.260346][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 25.260555][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 25.260757][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 25.260966][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 25.261138][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 25.261350][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 25.261554][ T227] ? 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) 
[ 25.261766][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 25.261977][ T227] ksys_write (fs/read_write.c:731) 
[ 25.262146][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 25.262358][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 25.262573][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 25.262778][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.263041][  T227] RIP: 0033:0x7fd229367b77
[ 25.263251][ T227] 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
[   25.263950][  T227] RSP: 002b:00007ffc85d34ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   25.264267][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fd229367b77
[   25.264569][  T227] RDX: 0000000000000004 RSI: 0000559eef30f330 RDI: 0000000000000001
[   25.264868][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[   25.265177][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000004
[   25.265478][  T227] R13: 00007fd229423760 R14: 0000000000000004 R15: 00007fd22941e9c0
| [   25.308474][  T227] ------------[ cut here ]------------
| [ 25.308793][ T227] WARNING: CPU: 2 PID: 227 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) 
| [   25.309208][  T227] Modules linked in: netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   25.309956][  T227] Tainted: [W]=WARN
[   25.310124][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 25.310383][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.310628][ T227] 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
[   25.311306][  T227] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[   25.311582][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   25.311868][  T227] RDX: 0000000000000000 RSI: ffff8880052aac98 RDI: ffff88800b5fade8
[   25.312160][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[   25.312457][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[   25.312747][  T227] R13: ffff8880052aa128 R14: ffff8880052aa008 R15: ffff8880052aa000
[   25.313046][  T227] FS:  00007fd229226740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   25.313378][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.313623][  T227] CR2: 00007fd229282330 CR3: 000000000b4aa006 CR4: 0000000000772ef0
[   25.313910][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.314669][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.314957][  T227] PKRU: 55555554
[   25.315123][  T227] Call Trace:
[   25.315274][  T227]  <TASK>
[ 25.315384][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.315582][ T227] ? __warn (kernel/panic.c:748) 
[ 25.315738][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.315946][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 25.316168][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 25.316326][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 25.316523][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 25.316737][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.316942][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 25.317202][ T227] ? _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) 
[ 25.317410][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 25.317615][ T227] register_netdevice (net/core/dev.c:11003) 
[ 25.317821][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 25.318040][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 25.318359][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 25.318615][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 25.318891][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 25.319157][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 25.319355][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 25.319567][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 25.319826][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 25.320037][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 25.320242][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 25.320441][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 25.320645][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 25.320805][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 25.321008][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 25.321226][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 25.321437][ T227] ksys_write (fs/read_write.c:731) 
[ 25.321600][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 25.321810][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 25.322042][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.322298][  T227] RIP: 0033:0x7fd229367b77
[ 25.322505][ T227] Code: Unable to access opcode bytes at 0x7fd229367b4d.

Code starting with the faulting instruction
===========================================
[   25.322777][  T227] RSP: 002b:00007ffc85d32a28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   25.323085][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd229367b77
[   25.323378][  T227] RDX: 0000000000000002 RSI: 0000559eef30f330 RDI: 0000000000000001
[   25.323664][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[   25.323951][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000002
[   25.324255][  T227] R13: 00007fd229423760 R14: 0000000000000002 R15: 00007fd22941e9c0
| [   37.044890][  T227] ------------[ cut here ]------------
| [ 37.045128][ T227] WARNING: CPU: 1 PID: 227 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) 
| [   37.045503][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   37.046267][  T227] Tainted: [W]=WARN
[   37.046411][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 37.046642][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 37.046884][ T227] 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
[   37.047540][  T227] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[   37.047781][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   37.048073][  T227] RDX: 0000000000000000 RSI: ffff88800c1b2c98 RDI: ffff88800b5fade8
[   37.048352][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[   37.048633][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[   37.048909][  T227] R13: ffff88800c1b2128 R14: ffff88800c1b2008 R15: ffff88800c1b2000
[   37.049281][  T227] FS:  00007fd229226740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   37.049605][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   37.049838][  T227] CR2: 00007fd2292ab440 CR3: 000000000b4aa001 CR4: 0000000000772ef0
[   37.050204][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   37.050484][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   37.050768][  T227] PKRU: 55555554
[   37.050920][  T227] Call Trace:
[   37.051154][  T227]  <TASK>
[ 37.051253][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 37.051447][ T227] ? __warn (kernel/panic.c:748) 
[ 37.051595][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 37.051787][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 37.051986][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 37.052284][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 37.052479][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 37.052679][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 37.052877][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 37.053128][ T227] ? _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) 
[ 37.053328][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 37.053520][ T227] register_netdevice (net/core/dev.c:11003) 
[ 37.053714][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 37.053912][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 37.054124][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 37.054367][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 37.054627][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 37.054868][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 37.055066][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 37.055265][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 37.055504][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 37.055687][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 37.055877][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 37.056080][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 37.056272][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 37.056421][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 37.056610][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 37.056804][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 37.057000][ T227] ksys_write (fs/read_write.c:731) 
[ 37.057151][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 37.057356][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 37.057551][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   37.057776][  T227] RIP: 0033:0x7fd229367b77
[ 37.057965][ T227] 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
[   37.058603][  T227] RSP: 002b:00007ffc85d32a28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   37.058882][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd229367b77
[   37.059159][  T227] RDX: 0000000000000002 RSI: 0000559eef30f330 RDI: 0000000000000001
[   37.059437][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[   37.059707][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000002
[   37.059982][  T227] R13: 00007fd229423760 R14: 0000000000000002 R15: 00007fd22941e9c0
| [   48.197699][  T227] ------------[ cut here ]------------
| [ 48.198035][ T227] WARNING: CPU: 1 PID: 227 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) 
| [   48.198479][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   48.199392][  T227] Tainted: [W]=WARN
[   48.199566][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 48.199848][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 48.200144][ T227] 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
[   48.200917][  T227] RSP: 0018:ffffc90000ad7520 EFLAGS: 00010246
[   48.201209][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   48.201539][  T227] RDX: 0000000000000000 RSI: ffff8880025b2c98 RDI: ffff88800b5fae38
[   48.201875][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[   48.202226][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[   48.202557][  T227] R13: ffff8880025b2128 R14: ffff8880025b2008 R15: ffff8880025b2000
[   48.202892][  T227] FS:  00007fd229226740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   48.203294][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   48.203575][  T227] CR2: 00007fd2292ab440 CR3: 000000000b4aa002 CR4: 0000000000772ef0
[   48.203906][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   48.204341][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   48.204677][  T227] PKRU: 55555554
[   48.204857][  T227] Call Trace:
[   48.205038][  T227]  <TASK>
[ 48.205157][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 48.205384][ T227] ? __warn (kernel/panic.c:748) 
[ 48.205560][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 48.205789][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 48.206031][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 48.206209][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 48.206433][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 48.206669][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 48.206906][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 48.207201][ T227] ? _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) 
[ 48.207431][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 48.207658][ T227] register_netdevice (net/core/dev.c:11003) 
[ 48.207893][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 48.208140][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 48.208398][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 48.208684][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 48.208856][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 48.209158][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 48.209446][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 48.209734][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 48.209973][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 48.210262][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 48.210491][ T227] ? 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)) 
[ 48.210660][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 48.210890][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 48.211131][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 48.211357][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 48.211584][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 48.211809][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 48.212095][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 48.212328][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 48.212548][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 48.212773][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 48.212995][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 48.213239][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 48.213464][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 48.213688][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 48.213912][ T227] ? 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) 
[ 48.214156][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 48.214386][ T227] device_add (drivers/base/core.c:3672) 
[ 48.214613][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 48.214840][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 48.215086][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 48.215379][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 48.215668][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 48.215889][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 48.216131][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 48.216354][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 48.216588][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 48.216766][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 48.216995][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 48.217236][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 48.217469][ T227] ksys_write (fs/read_write.c:731) 
[ 48.217641][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 48.217877][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 48.218114][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   48.218394][  T227] RIP: 0033:0x7fd229367b77
[ 48.218623][ T227] 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
[   48.219417][  T227] RSP: 002b:00007ffc85d34ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   48.219757][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fd229367b77
[   48.220099][  T227] RDX: 0000000000000004 RSI: 0000559eef30f330 RDI: 0000000000000001
[   48.220429][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[   48.220759][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000004
[   48.221103][  T227] R13: 00007fd229423760 R14: 0000000000000004 R15: 00007fd22941e9c0
| [   48.272400][  T227] ------------[ cut here ]------------
| [ 48.272716][ T227] WARNING: CPU: 3 PID: 227 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) 
| [   48.273141][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   48.273977][  T227] Tainted: [W]=WARN
[   48.274139][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 48.274387][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 48.274644][ T227] 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
[   48.275351][  T227] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[   48.275603][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   48.275903][  T227] RDX: 0000000000000000 RSI: ffff8880098fac98 RDI: ffff88800b5fade8
[   48.276211][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[   48.276513][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[   48.276809][  T227] R13: ffff8880098fa128 R14: ffff8880098fa008 R15: ffff8880098fa000
[   48.277122][  T227] FS:  00007fd229226740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   48.277468][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   48.277725][  T227] CR2: 00007fc3f3f2fe70 CR3: 000000000b4aa006 CR4: 0000000000772ef0
[   48.278035][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   48.278337][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   48.278740][  T227] PKRU: 55555554
[   48.278894][  T227] Call Trace:
[   48.279058][  T227]  <TASK>
[ 48.279171][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 48.279376][ T227] ? __warn (kernel/panic.c:748) 
[ 48.279533][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 48.279740][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 48.279951][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 48.280116][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 48.280320][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 48.280543][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 48.280757][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 48.281021][ T227] ? _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) 
[ 48.281235][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 48.281443][ T227] register_netdevice (net/core/dev.c:11003) 
[ 48.281650][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 48.281864][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 48.282094][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 48.282370][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 48.282642][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 48.282906][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 48.283124][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 48.283337][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 48.283603][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 48.283803][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 48.284006][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 48.284224][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 48.284441][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 48.284604][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 48.284814][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 48.285039][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 48.285252][ T227] ksys_write (fs/read_write.c:731) 
[ 48.285408][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 48.285623][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 48.285833][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   48.286090][  T227] RIP: 0033:0x7fd229367b77
[ 48.286298][ T227] 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
[   48.287003][  T227] RSP: 002b:00007ffc85d32a28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   48.287314][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd229367b77
[   48.287616][  T227] RDX: 0000000000000002 RSI: 0000559eef30f330 RDI: 0000000000000001
[   48.287921][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[   48.288230][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000002
[   48.288527][  T227] R13: 00007fd229423760 R14: 0000000000000002 R15: 00007fd22941e9c0
| [   59.812003][  T227] ------------[ cut here ]------------
| [ 59.812268][ T227] WARNING: CPU: 1 PID: 227 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) 
| [   59.812707][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   59.813705][  T227] Tainted: [W]=WARN
[   59.813863][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 59.814177][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 59.814438][ T227] 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
[   59.815150][  T227] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[   59.815410][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   59.815710][  T227] RDX: 0000000000000000 RSI: ffff88800a64ac98 RDI: ffff88800b5fade8
[   59.816011][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[   59.816326][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[   59.816629][  T227] R13: ffff88800a64a128 R14: ffff88800a64a008 R15: ffff88800a64a000
[   59.816933][  T227] FS:  00007fd229226740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   59.817297][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   59.817556][  T227] CR2: 00007fd2292ab440 CR3: 000000000b4aa002 CR4: 0000000000772ef0
[   59.817859][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   59.818174][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   59.818477][  T227] PKRU: 55555554
[   59.818634][  T227] Call Trace:
[   59.818788][  T227]  <TASK>
[ 59.818893][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 59.819108][ T227] ? __warn (kernel/panic.c:748) 
[ 59.819269][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 59.819480][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 59.819694][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 59.819850][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 59.820065][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 59.820287][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 59.820500][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 59.820759][ T227] ? _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) 
[ 59.820970][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 59.821188][ T227] register_netdevice (net/core/dev.c:11003) 
[ 59.821399][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 59.821611][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 59.821832][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 59.822116][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 59.822394][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 59.822663][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 59.822871][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 59.823093][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 59.823356][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 59.823558][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 59.823763][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 59.823971][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 59.824190][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 59.824363][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 59.824572][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 59.824786][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 59.824999][ T227] ksys_write (fs/read_write.c:731) 
[ 59.825169][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 59.825387][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 59.825593][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   59.825844][  T227] RIP: 0033:0x7fd229367b77
[ 59.826065][ T227] 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
[   59.826771][  T227] RSP: 002b:00007ffc85d32a28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   59.827087][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd229367b77
[   59.827393][  T227] RDX: 0000000000000002 RSI: 0000559eef30f330 RDI: 0000000000000001
[   59.827693][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[   59.827994][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000002
[   59.828303][  T227] R13: 00007fd229423760 R14: 0000000000000002 R15: 00007fd22941e9c0
| [   71.546917][  T227] ------------[ cut here ]------------
| [ 71.547339][ T227] WARNING: CPU: 3 PID: 227 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) 
| [   71.547786][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   71.548861][  T227] Tainted: [W]=WARN
[   71.549096][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 71.549439][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 71.549729][ T227] 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
[   71.550623][  T227] RSP: 0018:ffffc90000ad7520 EFLAGS: 00010246
[   71.550974][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   71.551321][  T227] RDX: 0000000000000000 RSI: ffff88800d482c98 RDI: ffff88800b5fae38
[   71.551698][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[   71.552126][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[   71.552560][  T227] R13: ffff88800d482128 R14: ffff88800d482008 R15: ffff88800d482000
[   71.553220][  T227] FS:  00007fd229226740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   71.553847][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   71.554309][  T227] CR2: 00007fd2292ab440 CR3: 000000000b4aa002 CR4: 0000000000772ef0
[   71.554853][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   71.555412][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   71.555957][  T227] PKRU: 55555554
[   71.556249][  T227] Call Trace:
[   71.556524][  T227]  <TASK>
[ 71.556709][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 71.557114][ T227] ? __warn (kernel/panic.c:748) 
[ 71.557408][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 71.557787][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 71.558181][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 71.558386][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 71.558648][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 71.558958][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 71.559285][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 71.559723][ T227] ? _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) 
[ 71.560120][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 71.560496][ T227] register_netdevice (net/core/dev.c:11003) 
[ 71.560872][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 71.561299][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 71.561574][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 71.561926][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 71.562179][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 71.562476][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 71.562767][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 71.563109][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 71.563430][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 71.563736][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 71.564053][ T227] ? 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)) 
[ 71.564286][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 71.564585][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 71.564846][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 71.565121][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 71.565433][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 71.565661][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 71.565955][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 71.566234][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 71.566457][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 71.566689][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 71.566922][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 71.567171][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 71.567395][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 71.567616][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 71.567839][ T227] ? 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) 
[ 71.568093][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 71.568323][ T227] device_add (drivers/base/core.c:3672) 
[ 71.568550][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 71.568773][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 71.569056][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 71.569355][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 71.569645][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 71.569868][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 71.570138][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 71.570364][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 71.570598][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 71.570775][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 71.571049][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 71.571284][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 71.571517][ T227] ksys_write (fs/read_write.c:731) 
[ 71.571689][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 71.571943][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 71.572256][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   71.572541][  T227] RIP: 0033:0x7fd229367b77
[ 71.572769][ T227] 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
[   71.573572][  T227] RSP: 002b:00007ffc85d34ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   71.574000][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fd229367b77
[   71.574399][  T227] RDX: 0000000000000004 RSI: 0000559eef30f330 RDI: 0000000000000001
[   71.574816][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[   71.575273][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000004
[   71.575645][  T227] R13: 00007fd229423760 R14: 0000000000000004 R15: 00007fd22941e9c0
| [   71.615059][  T227] ------------[ cut here ]------------
| [ 71.615352][ T227] WARNING: CPU: 3 PID: 227 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) 
| [   71.615770][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   71.616616][  T227] Tainted: [W]=WARN
[   71.616770][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 71.617110][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 71.617387][ T227] 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
[   71.618123][  T227] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[   71.618383][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   71.618692][  T227] RDX: 0000000000000000 RSI: ffff8880060d2c98 RDI: ffff88800b5fade8
[   71.619088][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[   71.619483][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[   71.619788][  T227] R13: ffff8880060d2128 R14: ffff8880060d2008 R15: ffff8880060d2000
[   71.620167][  T227] FS:  00007fd229226740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   71.620547][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   71.620806][  T227] CR2: 00007fd229282330 CR3: 000000000b4aa002 CR4: 0000000000772ef0
[   71.621200][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   71.621506][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   71.621858][  T227] PKRU: 55555554
[   71.622105][  T227] Call Trace:
[   71.622312][  T227]  <TASK>
[ 71.622445][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 71.622735][ T227] ? __warn (kernel/panic.c:748) 
[ 71.622968][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 71.623318][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 71.623655][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 71.623914][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 71.624235][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 71.624814][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 71.625076][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 71.625345][ T227] ? _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) 
[ 71.625559][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 71.625774][ T227] register_netdevice (net/core/dev.c:11003) 
[ 71.626124][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 71.626387][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 71.626616][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 71.627083][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 71.627366][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 71.627799][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 71.628061][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 71.628360][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 71.628702][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 71.628981][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 71.629290][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 71.629608][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 71.629960][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 71.630242][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 71.630584][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 71.630921][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 71.631285][ T227] ksys_write (fs/read_write.c:731) 
[ 71.631534][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 71.631884][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 71.632450][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   71.632851][  T227] RIP: 0033:0x7fd229367b77
[ 71.633357][ T227] Code: Unable to access opcode bytes at 0x7fd229367b4d.

Code starting with the faulting instruction
===========================================
[   71.633640][  T227] RSP: 002b:00007ffc85d34318 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   71.634041][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd229367b77
[   71.634468][  T227] RDX: 0000000000000002 RSI: 0000559eef30f330 RDI: 0000000000000001
[   71.635437][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[   71.635914][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000002
[   71.636577][  T227] R13: 00007fd229423760 R14: 0000000000000002 R15: 00007fd22941e9c0
| [   78.213061][  T227] ------------[ cut here ]------------
| [ 78.213321][ T227] WARNING: CPU: 3 PID: 227 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) 
| [   78.213732][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   78.214589][  T227] Tainted: [W]=WARN
[   78.214744][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 78.214996][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 78.215266][ T227] 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
[   78.215977][  T227] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[   78.216244][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   78.216551][  T227] RDX: 0000000000000000 RSI: ffff888004f0ac98 RDI: ffff88800b5fade8
[   78.216851][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[   78.217163][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[   78.217469][  T227] R13: ffff888004f0a128 R14: ffff888004f0a008 R15: ffff888004f0a000
[   78.217770][  T227] FS:  00007fd229226740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   78.218126][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   78.218382][  T227] CR2: 00007fd2292ab440 CR3: 000000000b4aa006 CR4: 0000000000772ef0
[   78.218696][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   78.218997][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   78.219310][  T227] PKRU: 55555554
[   78.219463][  T227] Call Trace:
[   78.219615][  T227]  <TASK>
[ 78.219723][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 78.219928][ T227] ? __warn (kernel/panic.c:748) 
[ 78.220092][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 78.220298][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 78.220509][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 78.220666][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 78.220872][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 78.221096][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 78.221312][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 78.221571][ T227] ? _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) 
[ 78.221785][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 78.222000][ T227] register_netdevice (net/core/dev.c:11003) 
[ 78.222223][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 78.222448][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 78.222667][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 78.222933][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 78.223220][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 78.223484][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 78.223691][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 78.223906][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 78.224181][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 78.224384][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 78.224589][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 78.224798][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 78.225008][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 78.225181][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 78.225390][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 78.225602][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 78.225817][ T227] ksys_write (fs/read_write.c:731) 
[ 78.225974][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 78.226200][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 78.226408][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   78.226657][  T227] RIP: 0033:0x7fd229367b77
[ 78.226863][ T227] 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
[   78.227573][  T227] RSP: 002b:00007ffc85d34318 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   78.227883][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd229367b77
[   78.228190][  T227] RDX: 0000000000000002 RSI: 0000559eef30f330 RDI: 0000000000000001
[   78.228495][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[   78.228796][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000002
[   78.229103][  T227] R13: 00007fd229423760 R14: 0000000000000002 R15: 00007fd22941e9c0
| [   84.804777][  T227] ------------[ cut here ]------------
| [ 84.806364][ T227] WARNING: CPU: 2 PID: 227 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) 
| [   84.807076][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   84.808346][  T227] Tainted: [W]=WARN
[   84.808659][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 84.808979][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 84.809320][ T227] 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
[   84.810184][  T227] RSP: 0018:ffffc90000ad7520 EFLAGS: 00010246
[   84.810508][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   84.810889][  T227] RDX: 0000000000000000 RSI: ffff8880052aac98 RDI: ffff88800b5fae38
[   84.811281][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[   84.811663][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[   84.812084][  T227] R13: ffff8880052aa128 R14: ffff8880052aa008 R15: ffff8880052aa000
[   84.812468][  T227] FS:  00007fd229226740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   84.812901][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   84.813237][  T227] CR2: 00007fd2292ab440 CR3: 000000000b4aa005 CR4: 0000000000772ef0
[   84.813615][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   84.813993][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   84.814378][  T227] PKRU: 55555554
[   84.814684][  T227] Call Trace:
[   84.814897][  T227]  <TASK>
[ 84.815057][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 84.815322][ T227] ? __warn (kernel/panic.c:748) 
[ 84.815525][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 84.815786][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 84.816086][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 84.816297][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 84.816560][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 84.816834][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 84.817119][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 84.817471][ T227] ? _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) 
[ 84.817738][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 84.818003][ T227] register_netdevice (net/core/dev.c:11003) 
[ 84.818284][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 84.818560][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 84.818834][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 84.819181][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 84.819388][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 84.819721][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 84.820078][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 84.820423][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 84.820694][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 84.821038][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 84.821312][ T227] ? 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)) 
[ 84.821513][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 84.821779][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 84.822069][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 84.822333][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 84.822593][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 84.822857][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 84.823184][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 84.823446][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 84.823704][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 84.823961][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 84.824249][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 84.824520][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 84.824786][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 84.825062][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 84.825325][ T227] ? 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) 
[ 84.825594][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 84.825856][ T227] device_add (drivers/base/core.c:3672) 
[ 84.826130][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 84.826390][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 84.826661][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 84.826993][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 84.827335][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 84.827596][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 84.827862][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 84.828148][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 84.828417][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 84.828635][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 84.828899][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 84.829187][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 84.829456][ T227] ksys_write (fs/read_write.c:731) 
[ 84.829658][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 84.829929][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 84.830209][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   84.830526][  T227] RIP: 0033:0x7fd229367b77
[ 84.830798][ T227] 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
[   84.831656][  T227] RSP: 002b:00007ffc85d34ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   84.832074][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fd229367b77
[   84.832461][  T227] RDX: 0000000000000004 RSI: 0000559eef30f330 RDI: 0000000000000001
[   84.832833][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[   84.833223][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000004
[   84.833598][  T227] R13: 00007fd229423760 R14: 0000000000000004 R15: 00007fd22941e9c0
| [   84.867555][  T227] ------------[ cut here ]------------
| [ 84.867910][ T227] WARNING: CPU: 1 PID: 227 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) 
| [   84.868334][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   84.869186][  T227] Tainted: [W]=WARN
[   84.869341][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 84.869591][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 84.869847][ T227] 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
[   84.870558][  T227] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[   84.870811][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   84.871285][  T227] RDX: 0000000000000000 RSI: ffff88800c1b2c98 RDI: ffff88800b5fade8
[   84.871580][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[   84.871876][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[   84.872494][  T227] R13: ffff88800c1b2128 R14: ffff88800c1b2008 R15: ffff88800c1b2000
[   84.872789][  T227] FS:  00007fd229226740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   84.873336][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   84.873584][  T227] CR2: 00007fd229282330 CR3: 000000000b4aa004 CR4: 0000000000772ef0
[   84.873884][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   84.874323][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   84.874621][  T227] PKRU: 55555554
[   84.874778][  T227] Call Trace:
[   84.874930][  T227]  <TASK>
[ 84.875137][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 84.875344][ T227] ? __warn (kernel/panic.c:748) 
[ 84.875503][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 84.875708][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 84.875918][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 84.876152][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 84.876361][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 84.876576][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 84.876787][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 84.877129][ T227] ? _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) 
[ 84.877340][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 84.877547][ T227] register_netdevice (net/core/dev.c:11003) 
[ 84.877753][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 84.877973][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 84.878348][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 84.878602][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 84.878878][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 84.879302][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 84.879503][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 84.879721][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 84.879981][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 84.880345][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 84.880548][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 84.880754][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 84.880962][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 84.881275][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 84.881482][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 84.881693][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 84.881905][ T227] ksys_write (fs/read_write.c:731) 
[ 84.882223][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 84.882443][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 84.882647][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   84.882896][  T227] RIP: 0033:0x7fd229367b77
[ 84.883117][ T227] 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
[   84.883819][  T227] RSP: 002b:00007ffc85d32698 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   84.884137][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd229367b77
[   84.884441][  T227] RDX: 0000000000000002 RSI: 0000559eef30f330 RDI: 0000000000000001
[   84.884742][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[   84.885046][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000002
[   84.885346][  T227] R13: 00007fd229423760 R14: 0000000000000002 R15: 00007fd22941e9c0
| [   87.350537][  T227] ------------[ cut here ]------------
| [ 87.350794][ T227] WARNING: CPU: 3 PID: 227 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) 
| [   87.351211][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   87.352057][  T227] Tainted: [W]=WARN
[   87.352213][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 87.352467][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 87.352726][ T227] 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
[   87.353438][  T227] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[   87.353696][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   87.353997][  T227] RDX: 0000000000000000 RSI: ffff8880025b2c98 RDI: ffff88800b5fade8
[   87.354309][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[   87.354608][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[   87.354904][  T227] R13: ffff8880025b2128 R14: ffff8880025b2008 R15: ffff8880025b2000
[   87.355228][  T227] FS:  00007fd229226740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   87.355583][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   87.355841][  T227] CR2: 00007f5cbb024000 CR3: 000000000b4aa006 CR4: 0000000000772ef0
[   87.356152][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   87.356453][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   87.356755][  T227] PKRU: 55555554
[   87.356908][  T227] Call Trace:
[   87.357083][  T227]  <TASK>
[ 87.357191][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 87.357399][ T227] ? __warn (kernel/panic.c:748) 
[ 87.357557][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 87.357767][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 87.357977][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 87.358140][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 87.358344][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 87.358565][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 87.358782][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 87.359049][ T227] ? _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) 
[ 87.359267][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 87.359477][ T227] register_netdevice (net/core/dev.c:11003) 
[ 87.359686][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 87.359901][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 87.360129][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 87.360395][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 87.360677][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 87.360939][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 87.361154][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 87.361367][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 87.361627][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 87.361830][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 87.362051][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 87.362261][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 87.362471][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 87.362635][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 87.362841][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 87.363063][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 87.363278][ T227] ksys_write (fs/read_write.c:731) 
[ 87.363435][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 87.363657][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 87.363863][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   87.364123][  T227] RIP: 0033:0x7fd229367b77
[ 87.364334][ T227] 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
[   87.365042][  T227] RSP: 002b:00007ffc85d32698 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   87.365352][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd229367b77
[   87.365654][  T227] RDX: 0000000000000002 RSI: 0000559eef30f330 RDI: 0000000000000001
[   87.365954][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[   87.366264][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000002
[   87.366567][  T227] R13: 00007fd229423760 R14: 0000000000000002 R15: 00007fd22941e9c0
| [   89.625677][  T227] ------------[ cut here ]------------
| [ 89.626104][ T227] WARNING: CPU: 2 PID: 227 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) 
| [   89.626613][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   89.627758][  T227] Tainted: [W]=WARN
[   89.627962][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 89.628301][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 89.628632][ T227] 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
[   89.629498][  T227] RSP: 0018:ffffc90000ad7520 EFLAGS: 00010246
[   89.629824][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   89.630212][  T227] RDX: 0000000000000000 RSI: ffff8880098fac98 RDI: ffff88800b5fae38
[   89.630587][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[   89.630960][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[   89.631349][  T227] R13: ffff8880098fa128 R14: ffff8880098fa008 R15: ffff8880098fa000
[   89.631726][  T227] FS:  00007fd229226740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   89.632196][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   89.632515][  T227] CR2: 0000559eef2e6000 CR3: 000000000b4aa001 CR4: 0000000000772ef0
[   89.632895][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   89.633287][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   89.633661][  T227] PKRU: 55555554
[   89.633863][  T227] Call Trace:
[   89.634077][  T227]  <TASK>
[ 89.634220][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 89.634485][ T227] ? __warn (kernel/panic.c:748) 
[ 89.634694][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 89.634958][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 89.635247][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 89.635452][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 89.635714][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 89.635990][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 89.636283][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 89.636614][ T227] ? _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) 
[ 89.636882][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 89.637165][ T227] register_netdevice (net/core/dev.c:11003) 
[ 89.637463][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 89.637735][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 89.638026][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 89.638356][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 89.638561][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 89.638891][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 89.639238][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 89.639570][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 89.639842][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 89.640182][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 89.640448][ T227] ? 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)) 
[ 89.640648][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 89.640916][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 89.641200][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 89.641467][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 89.641727][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 89.642002][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 89.642332][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 89.642596][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 89.642852][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 89.643154][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 89.643418][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 89.643683][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 89.643942][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 89.644218][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 89.644481][ T227] ? 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) 
[ 89.644749][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 89.645033][ T227] device_add (drivers/base/core.c:3672) 
[ 89.645301][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 89.645557][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 89.645829][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 89.646171][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 89.646503][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 89.646762][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 89.647048][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 89.647308][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 89.647574][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 89.647785][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 89.648064][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 89.648343][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 89.648609][ T227] ksys_write (fs/read_write.c:731) 
[ 89.648820][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 89.649105][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 89.649372][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   89.649685][  T227] RIP: 0033:0x7fd229367b77
[ 89.649950][ T227] 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
[   89.650814][  T227] RSP: 002b:00007ffc85d34ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   89.651207][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fd229367b77
[   89.651581][  T227] RDX: 0000000000000004 RSI: 0000559eef30f330 RDI: 0000000000000001
[   89.651965][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[   89.652364][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000004
[   89.652747][  T227] R13: 00007fd229423760 R14: 0000000000000004 R15: 00007fd22941e9c0
| [   89.695055][  T227] ------------[ cut here ]------------
| [ 89.695362][ T227] WARNING: CPU: 1 PID: 227 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) 
| [   89.695761][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   89.697820][  T227] Tainted: [W]=WARN
[   89.697975][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 89.698276][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 89.698535][ T227] 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
[   89.699230][  T227] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[   89.699489][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   89.699784][  T227] RDX: 0000000000000000 RSI: ffff88800a64ac98 RDI: ffff88800b5fade8
[   89.700089][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[   89.700386][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[   89.700687][  T227] R13: ffff88800a64a128 R14: ffff88800a64a008 R15: ffff88800a64a000
[   89.700989][  T227] FS:  00007fd229226740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   89.701344][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   89.701593][  T227] CR2: 00007fd229225258 CR3: 000000000b4aa003 CR4: 0000000000772ef0
[   89.701897][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   89.702207][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   89.702502][  T227] PKRU: 55555554
[   89.702654][  T227] Call Trace:
[   89.702902][  T227]  <TASK>
[ 89.703006][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 89.703220][ T227] ? __warn (kernel/panic.c:748) 
[ 89.703377][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 89.703584][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 89.703795][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 89.703950][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 89.704162][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 89.704375][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 89.704584][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 89.704838][ T227] ? _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) 
[ 89.705060][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 89.705266][ T227] register_netdevice (net/core/dev.c:11003) 
[ 89.705471][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 89.705684][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 89.705900][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 89.706168][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 89.706447][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 89.706705][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 89.706905][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 89.707128][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 89.707390][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 89.707593][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 89.707796][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 89.708009][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 89.708229][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 89.708392][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 89.708664][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 89.708881][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 89.709105][ T227] ksys_write (fs/read_write.c:731) 
[ 89.709268][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 89.709487][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 89.709692][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   89.709939][  T227] RIP: 0033:0x7fd229367b77
[ 89.710159][ T227] 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
[   89.710864][  T227] RSP: 002b:00007ffc85d32b58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   89.711180][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd229367b77
[   89.711480][  T227] RDX: 0000000000000002 RSI: 0000559eef30f330 RDI: 0000000000000001
[   89.711779][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[   89.712097][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000002
[   89.712402][  T227] R13: 00007fd229423760 R14: 0000000000000002 R15: 00007fd22941e9c0
| [   92.045169][  T227] ------------[ cut here ]------------
| [ 92.045480][ T227] WARNING: CPU: 2 PID: 227 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) 
| [   92.045944][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   92.046896][  T227] Tainted: [W]=WARN
[   92.047099][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 92.047398][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 92.047704][ T227] 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
[   92.048615][  T227] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[   92.048919][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   92.049283][  T227] RDX: 0000000000000000 RSI: ffff88800d482c98 RDI: ffff88800b5fade8
[   92.049635][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[   92.049986][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[   92.050351][  T227] R13: ffff88800d482128 R14: ffff88800d482008 R15: ffff88800d482000
[   92.050707][  T227] FS:  00007fd229226740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   92.051118][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   92.051420][  T227] CR2: 00007fd2292ab440 CR3: 000000000b4aa002 CR4: 0000000000772ef0
[   92.051774][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   92.052151][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   92.052504][  T227] PKRU: 55555554
[   92.052692][  T227] Call Trace:
[   92.052880][  T227]  <TASK>
[ 92.053023][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 92.053271][ T227] ? __warn (kernel/panic.c:748) 
[ 92.053462][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 92.053708][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 92.053958][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 92.054158][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 92.054400][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 92.054655][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 92.054917][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 92.055228][ T227] ? _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) 
[ 92.055477][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 92.055721][ T227] register_netdevice (net/core/dev.c:11003) 
[ 92.055971][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 92.056232][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 92.056496][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 92.056802][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 92.057134][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 92.057440][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 92.057682][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 92.057942][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 92.058260][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 92.058503][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 92.058768][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 92.059032][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 92.059280][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 92.059474][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 92.059725][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 92.059982][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 92.060258][ T227] ksys_write (fs/read_write.c:731) 
[ 92.060447][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 92.060697][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 92.060953][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   92.061255][  T227] RIP: 0033:0x7fd229367b77
[ 92.061501][ T227] 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
[   92.062311][  T227] RSP: 002b:00007ffc85d32b58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   92.062664][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd229367b77
[   92.063007][  T227] RDX: 0000000000000002 RSI: 0000559eef30f330 RDI: 0000000000000001
[   92.063370][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[   92.063718][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000002
[   92.064071][  T227] R13: 00007fd229423760 R14: 0000000000000002 R15: 00007fd22941e9c0
| [   94.148526][  T227] ------------[ cut here ]------------
| [ 94.148860][ T227] WARNING: CPU: 3 PID: 227 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) 
| [   94.149314][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   94.150231][  T227] Tainted: [W]=WARN
[   94.150405][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 94.150688][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 94.150972][ T227] 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
[   94.151807][  T227] RSP: 0018:ffffc90000ad7520 EFLAGS: 00010246
[   94.152117][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   94.152451][  T227] RDX: 0000000000000000 RSI: ffff8880060d2c98 RDI: ffff88800b5fae38
[   94.152886][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[   94.153235][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[   94.153573][  T227] R13: ffff8880060d2128 R14: ffff8880060d2008 R15: ffff8880060d2000
[   94.153910][  T227] FS:  00007fd229226740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   94.154306][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   94.154585][  T227] CR2: 00007fb5a61be1b4 CR3: 000000000b4aa001 CR4: 0000000000772ef0
[   94.154925][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   94.155269][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   94.155605][  T227] PKRU: 55555554
[   94.155776][  T227] Call Trace:
[   94.155943][  T227]  <TASK>
[ 94.156068][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 94.156297][ T227] ? __warn (kernel/panic.c:748) 
[ 94.156474][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 94.156703][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 94.156933][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 94.157115][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 94.157348][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 94.157589][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 94.157828][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 94.158145][ T227] ? _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) 
[ 94.158376][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 94.158603][ T227] register_netdevice (net/core/dev.c:11003) 
[ 94.158832][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 94.159084][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 94.159325][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 94.159615][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 94.159787][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 94.160089][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 94.160376][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 94.160663][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 94.160899][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 94.161196][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 94.161423][ T227] ? 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)) 
[ 94.161593][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 94.161826][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 94.162079][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 94.162308][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 94.162532][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 94.162762][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 94.163047][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 94.163275][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 94.163497][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 94.163721][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 94.163943][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 94.164183][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 94.164411][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 94.164632][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 94.164858][ T227] ? 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) 
[ 94.165102][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 94.165329][ T227] device_add (drivers/base/core.c:3672) 
[ 94.165556][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 94.165780][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 94.166030][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 94.166319][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 94.166608][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 94.166829][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 94.167069][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 94.167294][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 94.167522][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 94.167703][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 94.167931][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 94.168172][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 94.168405][ T227] ksys_write (fs/read_write.c:731) 
[ 94.168585][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 94.168820][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 94.169055][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   94.169331][  T227] RIP: 0033:0x7fd229367b77
[ 94.169572][ T227] 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
[   94.170354][  T227] RSP: 002b:00007ffc85d34ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   94.170691][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fd229367b77
[   94.171034][  T227] RDX: 0000000000000004 RSI: 0000559eef30f330 RDI: 0000000000000001
[   94.171367][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[   94.171699][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000004
[   94.172048][  T227] R13: 00007fd229423760 R14: 0000000000000004 R15: 00007fd22941e9c0
| [   94.206432][  T227] ------------[ cut here ]------------
| [ 94.206735][ T227] WARNING: CPU: 3 PID: 227 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) 
| [   94.207163][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   94.207987][  T227] Tainted: [W]=WARN
[   94.208157][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 94.208424][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 94.208682][ T227] 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
[   94.209387][  T227] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[   94.209644][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   94.209945][  T227] RDX: 0000000000000000 RSI: ffff888004f0ac98 RDI: ffff88800b5fade8
[   94.210260][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[   94.210562][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[   94.210862][  T227] R13: ffff888004f0a128 R14: ffff888004f0a008 R15: ffff888004f0a000
[   94.211173][  T227] FS:  00007fd229226740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   94.211529][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   94.211784][  T227] CR2: 00007fd229282330 CR3: 000000000b4aa001 CR4: 0000000000772ef0
[   94.212196][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   94.212498][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   94.212801][  T227] PKRU: 55555554
[   94.212957][  T227] Call Trace:
[   94.213123][  T227]  <TASK>
[ 94.213230][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 94.213437][ T227] ? __warn (kernel/panic.c:748) 
[ 94.213595][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 94.213804][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 94.214025][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 94.214188][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 94.214394][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 94.214614][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 94.214830][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 94.215100][ T227] ? _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) 
[ 94.215314][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 94.215523][ T227] register_netdevice (net/core/dev.c:11003) 
[ 94.215737][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 94.215951][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 94.216185][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 94.216450][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 94.216729][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 94.216996][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 94.217215][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 94.217431][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 94.217694][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 94.217893][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 94.218106][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 94.218314][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 94.218527][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 94.218692][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 94.218903][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 94.219125][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 94.219339][ T227] ksys_write (fs/read_write.c:731) 
[ 94.219496][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 94.219714][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 94.219918][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   94.220184][  T227] RIP: 0033:0x7fd229367b77
[ 94.220395][ T227] 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
[   94.221105][  T227] RSP: 002b:00007ffc85d32698 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   94.221412][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd229367b77
[   94.221716][  T227] RDX: 0000000000000002 RSI: 0000559eef30f330 RDI: 0000000000000001
[   94.222033][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[   94.222335][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000002
[   94.222638][  T227] R13: 00007fd229423760 R14: 0000000000000002 R15: 00007fd22941e9c0
| [   96.257730][  T227] ------------[ cut here ]------------
| [ 96.257968][ T227] WARNING: CPU: 3 PID: 227 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) 
| [   96.258452][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   96.259290][  T227] Tainted: [W]=WARN
[   96.259449][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 96.259705][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 96.259965][ T227] 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
[   96.260692][  T227] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[   96.260953][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   96.261272][  T227] RDX: 0000000000000000 RSI: ffff8880052aac98 RDI: ffff88800b5fade8
[   96.261576][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[   96.261891][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[   96.262207][  T227] R13: ffff8880052aa128 R14: ffff8880052aa008 R15: ffff8880052aa000
[   96.262511][  T227] FS:  00007fd229226740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   96.262865][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   96.263134][  T227] CR2: 00007ffc85d31e80 CR3: 000000000b4aa002 CR4: 0000000000772ef0
[   96.263447][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   96.263753][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   96.264074][  T227] PKRU: 55555554
[   96.264232][  T227] Call Trace:
[   96.264389][  T227]  <TASK>
[ 96.264496][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 96.264703][ T227] ? __warn (kernel/panic.c:748) 
[ 96.264867][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 96.265089][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 96.265306][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 96.265463][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 96.265670][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 96.265890][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 96.266117][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 96.266381][ T227] ? _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) 
[ 96.266592][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 96.266803][ T227] register_netdevice (net/core/dev.c:11003) 
[ 96.267029][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 96.267249][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 96.267474][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 96.267743][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 96.268039][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 96.268309][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 96.268516][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 96.268731][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 96.268998][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 96.269214][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 96.269423][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 96.269641][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 96.269856][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 96.270033][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 96.270253][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 96.270469][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 96.270683][ T227] ksys_write (fs/read_write.c:731) 
[ 96.270844][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 96.271070][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 96.271278][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   96.271537][  T227] RIP: 0033:0x7fd229367b77
[ 96.271747][ T227] 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
[   96.272479][  T227] RSP: 002b:00007ffc85d32698 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   96.272795][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd229367b77
[   96.273120][  T227] RDX: 0000000000000002 RSI: 0000559eef30f330 RDI: 0000000000000001
[   96.273423][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[   96.273727][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000002
[   96.274036][  T227] R13: 00007fd229423760 R14: 0000000000000002 R15: 00007fd22941e9c0
| [   98.172237][  T227] ------------[ cut here ]------------
| [ 98.172612][ T227] WARNING: CPU: 0 PID: 227 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) 
| [   98.173041][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   98.173952][  T227] Tainted: [W]=WARN
[   98.174138][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 98.174395][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 98.174655][ T227] 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
[   98.175367][  T227] RSP: 0018:ffffc90000ad7520 EFLAGS: 00010246
[   98.175631][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   98.175931][  T227] RDX: 0000000000000000 RSI: ffff88800c1b2c98 RDI: ffff88800b5fae38
[   98.176247][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[   98.176553][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[   98.176854][  T227] R13: ffff88800c1b2128 R14: ffff88800c1b2008 R15: ffff88800c1b2000
[   98.177172][  T227] FS:  00007fd229226740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   98.177524][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   98.177813][  T227] CR2: 0000559eef2e6000 CR3: 000000000b4aa003 CR4: 0000000000772ef0
[   98.178153][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   98.178455][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   98.178759][  T227] PKRU: 55555554
[   98.178912][  T227] Call Trace:
[   98.179076][  T227]  <TASK>
[ 98.179185][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 98.179391][ T227] ? __warn (kernel/panic.c:748) 
[ 98.179550][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 98.179755][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 98.179964][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 98.180131][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 98.180335][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 98.180554][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 98.180770][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 98.181044][ T227] ? _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) 
[ 98.181255][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 98.181466][ T227] register_netdevice (net/core/dev.c:11003) 
[ 98.181683][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 98.181912][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 98.182180][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 98.182444][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 98.182602][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 98.182869][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 98.183140][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 98.183404][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 98.183621][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 98.183884][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 98.184101][ T227] ? 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)) 
[ 98.184257][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 98.184470][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 98.184680][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 98.184887][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 98.185100][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 98.185311][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 98.185566][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 98.185771][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 98.185972][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 98.186198][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 98.186401][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 98.186615][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 98.186821][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 98.187034][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 98.187239][ T227] ? 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) 
[ 98.187451][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 98.187660][ T227] device_add (drivers/base/core.c:3672) 
[ 98.187867][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 98.188081][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 98.188302][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 98.188566][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 98.188829][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 98.189041][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 98.189256][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 98.189458][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 98.189677][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 98.189841][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 98.190073][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 98.190289][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 98.190500][ T227] ksys_write (fs/read_write.c:731) 
[ 98.190658][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 98.190875][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 98.191092][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   98.191348][  T227] RIP: 0033:0x7fd229367b77
[ 98.191559][ T227] 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
[   98.192279][  T227] RSP: 002b:00007ffc85d34ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   98.192585][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fd229367b77
[   98.192889][  T227] RDX: 0000000000000004 RSI: 0000559eef30f330 RDI: 0000000000000001
[   98.193205][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[   98.193506][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000004
[   98.193807][  T227] R13: 00007fd229423760 R14: 0000000000000004 R15: 00007fd22941e9c0
| [   98.230192][  T227] ------------[ cut here ]------------
| [ 98.230556][ T227] WARNING: CPU: 0 PID: 227 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) 
| [   98.230928][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   98.231700][  T227] Tainted: [W]=WARN
[   98.231849][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 98.232093][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 98.232330][ T227] 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
[   98.232962][  T227] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[   98.233209][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   98.233481][  T227] RDX: 0000000000000000 RSI: ffff8880025b2c98 RDI: ffff88800b5fade8
[   98.233750][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[   98.234032][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[   98.234309][  T227] R13: ffff8880025b2128 R14: ffff8880025b2008 R15: ffff8880025b2000
[   98.234580][  T227] FS:  00007fd229226740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   98.234894][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   98.235182][  T227] CR2: 0000559eef2e6000 CR3: 000000000b4aa003 CR4: 0000000000772ef0
[   98.235455][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   98.235731][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   98.236108][  T227] PKRU: 55555554
[   98.236250][  T227] Call Trace:
[   98.236390][  T227]  <TASK>
[ 98.236486][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 98.236674][ T227] ? __warn (kernel/panic.c:748) 
[ 98.236816][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 98.237010][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 98.237215][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 98.237359][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 98.237544][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 98.237738][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 98.237932][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 98.238179][ T227] ? _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) 
[ 98.238376][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 98.238565][ T227] register_netdevice (net/core/dev.c:11003) 
[ 98.238756][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 98.238956][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 98.239186][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 98.239458][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 98.239733][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 98.239974][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 98.240170][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 98.240500][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 98.240739][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 98.241041][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 98.241230][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 98.241422][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 98.241610][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 98.241758][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 98.242076][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 98.242281][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 98.242473][ T227] ksys_write (fs/read_write.c:731) 
[ 98.242615][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 98.242925][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 98.243122][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   98.243458][  T227] RIP: 0033:0x7fd229367b77
[ 98.243648][ T227] 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
[   98.244436][  T227] RSP: 002b:00007ffc85d328f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   98.244825][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd229367b77
[   98.245224][  T227] RDX: 0000000000000002 RSI: 0000559eef30f330 RDI: 0000000000000001
[   98.245500][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[   98.245780][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000002
[   98.246175][  T227] R13: 00007fd229423760 R14: 0000000000000002 R15: 00007fd22941e9c0
| [  100.103957][  T227] ------------[ cut here ]------------
| [ 100.104201][ T227] WARNING: CPU: 3 PID: 227 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) 
| [  100.104578][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  100.106431][  T227] Tainted: [W]=WARN
[  100.106578][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 100.106812][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 100.107221][ T227] 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
[  100.107874][  T227] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  100.108178][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  100.108462][  T227] RDX: 0000000000000000 RSI: ffff8880098fac98 RDI: ffff88800b5fade8
[  100.108737][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[  100.109024][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[  100.109305][  T227] R13: ffff8880098fa128 R14: ffff8880098fa008 R15: ffff8880098fa000
[  100.109585][  T227] FS:  00007fd229226740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  100.109910][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  100.110158][  T227] CR2: 0000559eef2ee1e8 CR3: 000000000b4aa004 CR4: 0000000000772ef0
[  100.110442][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  100.110719][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  100.110997][  T227] PKRU: 55555554
[  100.111153][  T227] Call Trace:
[  100.111295][  T227]  <TASK>
[ 100.111394][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 100.111582][ T227] ? __warn (kernel/panic.c:748) 
[ 100.111728][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 100.111929][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 100.112134][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 100.112279][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 100.112469][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 100.112673][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 100.112872][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 100.113121][ T227] ? _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) 
[ 100.113319][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 100.113512][ T227] register_netdevice (net/core/dev.c:11003) 
[ 100.113707][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 100.113905][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 100.114120][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 100.114366][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 100.114625][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 100.114881][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 100.115084][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 100.115284][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 100.115524][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 100.115709][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 100.115896][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 100.116097][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 100.116297][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 100.116446][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 100.116635][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 100.116833][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 100.117039][ T227] ksys_write (fs/read_write.c:731) 
[ 100.117181][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 100.117375][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 100.117570][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  100.117802][  T227] RIP: 0033:0x7fd229367b77
[ 100.117986][ T227] 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
[  100.118635][  T227] RSP: 002b:00007ffc85d328f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  100.118917][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd229367b77
[  100.119210][  T227] RDX: 0000000000000002 RSI: 0000559eef30f330 RDI: 0000000000000001
[  100.119484][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[  100.119756][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000002
[  100.120044][  T227] R13: 00007fd229423760 R14: 0000000000000002 R15: 00007fd22941e9c0
| [  101.727495][  T227] ------------[ cut here ]------------
| [ 101.727905][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  101.728357][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  101.729229][  T227] Tainted: [W]=WARN
[  101.729401][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 101.729669][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 101.729942][ T227] 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
[  101.730671][  T227] RSP: 0018:ffffc90000ad7520 EFLAGS: 00010246
[  101.730947][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  101.731771][  T227] RDX: 0000000000000000 RSI: ffff88800a64ac98 RDI: ffff88800b5fae38
[  101.732114][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[  101.732431][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[  101.732755][  T227] R13: ffff88800a64a128 R14: ffff88800a64a008 R15: ffff88800a64a000
[  101.733086][  T227] FS:  00007fd229226740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  101.733450][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  101.733730][  T227] CR2: 0000559eef2e6000 CR3: 000000000b4aa003 CR4: 0000000000772ef0
[  101.734083][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  101.734403][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  101.734723][  T227] PKRU: 55555554
[  101.734891][  T227] Call Trace:
[  101.735069][  T227]  <TASK>
[ 101.735190][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 101.735502][ T227] ? __warn (kernel/panic.c:748) 
[ 101.735679][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 101.735903][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 101.736147][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 101.736317][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 101.736534][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 101.736770][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 101.737001][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 101.737287][ T227] ? _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) 
[ 101.737511][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 101.737735][ T227] register_netdevice (net/core/dev.c:11003) 
[ 101.737962][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 101.738228][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 101.738462][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 101.738737][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 101.738908][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 101.739205][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 101.739478][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 101.739760][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 101.739988][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 101.740273][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 101.740496][ T227] ? 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)) 
[ 101.740665][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 101.740892][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 101.741129][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 101.741354][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 101.741571][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 101.741793][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 101.742087][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 101.742306][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 101.742520][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 101.742737][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 101.742957][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 101.743194][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 101.743411][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 101.743631][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 101.743849][ T227] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 101.744088][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 101.744308][ T227] device_add (drivers/base/core.c:3672) 
[ 101.744535][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 101.744750][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 101.744980][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 101.745269][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 101.745549][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 101.745764][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 101.745989][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 101.746220][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 101.746446][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 101.746623][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 101.746842][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 101.747088][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 101.747317][ T227] ksys_write (fs/read_write.c:731) 
[ 101.747490][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 101.747722][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 101.747943][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  101.748218][  T227] RIP: 0033:0x7fd229367b77
[ 101.748442][ T227] 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
[  101.749164][  T227] RSP: 002b:00007ffc85d34ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  101.749484][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fd229367b77
[  101.749798][  T227] RDX: 0000000000000004 RSI: 0000559eef30f330 RDI: 0000000000000001
[  101.750125][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[  101.750436][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000004
[  101.750754][  T227] R13: 00007fd229423760 R14: 0000000000000004 R15: 00007fd22941e9c0
| [  101.850757][  T227] ------------[ cut here ]------------
| [ 101.851408][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  101.851799][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  101.852600][  T227] Tainted: [W]=WARN
[  101.852763][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 101.853009][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 101.853276][ T227] 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
[  101.853949][  T227] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  101.854209][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  101.854498][  T227] RDX: 0000000000000000 RSI: ffff88800d482c98 RDI: ffff88800b5fade8
[  101.854786][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[  101.855089][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[  101.855417][  T227] R13: ffff88800d482128 R14: ffff88800d482008 R15: ffff88800d482000
[  101.855709][  T227] FS:  00007fd229226740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  101.856052][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  101.856303][  T227] CR2: 0000559eef30f330 CR3: 000000000b4aa004 CR4: 0000000000772ef0
[  101.856589][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  101.856880][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  101.857298][  T227] PKRU: 55555554
[  101.857454][  T227] Call Trace:
[  101.857610][  T227]  <TASK>
[ 101.857721][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 101.857918][ T227] ? __warn (kernel/panic.c:748) 
[ 101.858089][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 101.858288][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 101.858489][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 101.858646][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 101.858841][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 101.859068][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 101.859273][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 101.859523][ T227] ? _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) 
[ 101.859728][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 101.859929][ T227] register_netdevice (net/core/dev.c:11003) 
[ 101.860142][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 101.860357][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 101.860571][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 101.860822][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 101.861101][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 101.861355][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 101.861550][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 101.861763][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 101.862036][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 101.862236][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 101.862439][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 101.862645][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 101.862851][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 101.863025][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 101.863236][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 101.863434][ T227] ? 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) 
[ 101.863647][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 101.863852][ T227] ksys_write (fs/read_write.c:731) 
[ 101.864035][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 101.864234][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 101.864449][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 101.864647][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  101.864893][  T227] RIP: 0033:0x7fd229367b77
[ 101.865118][ T227] 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
[  101.865771][  T227] RSP: 002b:00007ffc85d34ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  101.866081][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd229367b77
[  101.866367][  T227] RDX: 0000000000000002 RSI: 0000559eef30f330 RDI: 0000000000000001
[  101.866653][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[  101.866944][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000002
[  101.867250][  T227] R13: 00007fd229423760 R14: 0000000000000002 R15: 00007fd22941e9c0
| [  102.419883][  T227] ------------[ cut here ]------------
| [ 102.420205][ T227] WARNING: CPU: 0 PID: 227 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) 
| [  102.420582][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  102.421354][  T227] Tainted: [W]=WARN
[  102.421496][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 102.421727][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 102.421976][ T227] 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
[  102.422635][  T227] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  102.422874][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  102.423163][  T227] RDX: 0000000000000000 RSI: ffff8880060d2c98 RDI: ffff88800b5fade8
[  102.423441][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[  102.423721][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[  102.423996][  T227] R13: ffff8880060d2128 R14: ffff8880060d2008 R15: ffff8880060d2000
[  102.424290][  T227] FS:  00007fd229226740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  102.424609][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  102.424848][  T227] CR2: 0000559eef30f330 CR3: 000000000b4aa003 CR4: 0000000000772ef0
[  102.425138][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  102.425429][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  102.425707][  T227] PKRU: 55555554
[  102.425850][  T227] Call Trace:
[  102.425992][  T227]  <TASK>
[ 102.426099][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 102.426287][ T227] ? __warn (kernel/panic.c:748) 
[ 102.426435][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 102.426624][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 102.426817][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 102.426962][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 102.427162][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 102.427364][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 102.427561][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 102.427801][ T227] ? _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) 
[ 102.427994][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 102.428194][ T227] register_netdevice (net/core/dev.c:11003) 
[ 102.428407][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 102.428641][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 102.428860][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 102.429115][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 102.429375][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 102.429625][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 102.429813][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 102.430022][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 102.430263][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 102.430448][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 102.430637][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 102.430829][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 102.431035][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 102.431187][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 102.431379][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 102.431564][ T227] ? 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) 
[ 102.431759][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 102.431963][ T227] ksys_write (fs/read_write.c:731) 
[ 102.432116][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 102.432305][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 102.432501][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 102.432687][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  102.432918][  T227] RIP: 0033:0x7fd229367b77
[ 102.433115][ T227] 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
[  102.433756][  T227] RSP: 002b:00007ffc85d34ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  102.434038][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd229367b77
[  102.434314][  T227] RDX: 0000000000000002 RSI: 0000559eef30f330 RDI: 0000000000000001
[  102.434587][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[  102.434860][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000002
[  102.435145][  T227] R13: 00007fd229423760 R14: 0000000000000002 R15: 00007fd22941e9c0
| [  109.218936][  T227] ------------[ cut here ]------------
| [ 109.219220][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  109.219614][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  109.220420][  T227] Tainted: [W]=WARN
[  109.220578][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 109.220826][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 109.221174][ T227] 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
[  109.221849][  T227] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  109.222118][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  109.222409][  T227] RDX: 0000000000000000 RSI: ffff888004f0ac98 RDI: ffff88800b5fade8
[  109.222700][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[  109.222993][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[  109.223298][  T227] R13: ffff888004f0a128 R14: ffff888004f0a008 R15: ffff888004f0a000
[  109.223593][  T227] FS:  00007fd229226740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  109.223932][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  109.224190][  T227] CR2: 00005576eeb6a0c0 CR3: 000000000b4aa001 CR4: 0000000000772ef0
[  109.224485][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  109.224778][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  109.225082][  T227] PKRU: 55555554
[  109.225239][  T227] Call Trace:
[  109.225395][  T227]  <TASK>
[ 109.225505][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 109.225709][ T227] ? __warn (kernel/panic.c:748) 
[ 109.225865][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 109.226090][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 109.226299][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 109.226458][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 109.226661][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 109.226874][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 109.227099][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 109.227352][ T227] ? _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) 
[ 109.227564][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 109.227771][ T227] register_netdevice (net/core/dev.c:11003) 
[ 109.227985][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 109.228207][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 109.228426][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 109.228682][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 109.228956][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 109.229224][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 109.229431][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 109.229640][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 109.229894][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 109.230102][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 109.230306][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 109.230509][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 109.230717][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 109.230882][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 109.231098][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 109.231308][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 109.231515][ T227] ksys_write (fs/read_write.c:731) 
[ 109.231673][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 109.231890][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 109.232105][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  109.232354][  T227] RIP: 0033:0x7fd229367b77
[ 109.232574][ T227] 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
[  109.233249][  T227] RSP: 002b:00007ffc85d34ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  109.233550][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd229367b77
[  109.233884][  T227] RDX: 0000000000000002 RSI: 0000559eef30f330 RDI: 0000000000000001
[  109.234205][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[  109.234514][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000002
[  109.234812][  T227] R13: 00007fd229423760 R14: 0000000000000002 R15: 00007fd22941e9c0
| [  111.343312][  T227] ------------[ cut here ]------------
| [ 111.343671][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  111.344205][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  111.345082][  T227] Tainted: [W]=WARN
[  111.345256][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 111.345522][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.345802][ T227] 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
[  111.346538][  T227] RSP: 0018:ffffc90000ad7520 EFLAGS: 00010246
[  111.346808][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  111.347148][  T227] RDX: 0000000000000000 RSI: ffff8880052aac98 RDI: ffff88800b5fae38
[  111.347476][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[  111.347792][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[  111.348577][  T227] R13: ffff8880052aa128 R14: ffff8880052aa008 R15: ffff8880052aa000
[  111.348899][  T227] FS:  00007fd229226740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  111.349276][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  111.349549][  T227] CR2: 0000559eef2ebcdc CR3: 000000000b4aa002 CR4: 0000000000772ef0
[  111.349864][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  111.350193][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  111.350507][  T227] PKRU: 55555554
[  111.350675][  T227] Call Trace:
[  111.350842][  T227]  <TASK>
[ 111.350963][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.351208][ T227] ? __warn (kernel/panic.c:748) 
[ 111.351386][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.351605][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 111.351841][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 111.352027][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 111.352247][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 111.352478][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.352706][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 111.352982][ T227] ? _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) 
[ 111.353223][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 111.353446][ T227] register_netdevice (net/core/dev.c:11003) 
[ 111.353671][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 111.353907][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 111.354156][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 111.354434][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 111.354609][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 111.355040][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 111.355321][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 111.355599][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 111.355829][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 111.356112][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 111.356335][ T227] ? 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)) 
[ 111.356508][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 111.356734][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 111.356959][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 111.357191][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 111.357412][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 111.357633][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 111.357898][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 111.358134][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 111.358352][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 111.358569][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 111.358786][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 111.359009][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 111.359254][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 111.359469][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 111.359692][ T227] ? 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) 
[ 111.359919][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 111.360154][ T227] device_add (drivers/base/core.c:3672) 
[ 111.360378][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 111.360592][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 111.360823][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 111.361109][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 111.361398][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 111.361613][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 111.361847][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 111.362075][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 111.362301][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 111.362476][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 111.362700][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 111.362927][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 111.363178][ T227] ksys_write (fs/read_write.c:731) 
[ 111.363348][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 111.363580][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 111.363798][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  111.364077][  T227] RIP: 0033:0x7fd229367b77
[ 111.364299][ T227] 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
[  111.365034][  T227] RSP: 002b:00007ffc85d34ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  111.365354][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fd229367b77
[  111.365666][  T227] RDX: 0000000000000004 RSI: 0000559eef30f330 RDI: 0000000000000001
[  111.365985][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[  111.366311][  T227] R10: 00007fd2293da3e0 R11: 0000000000000246 R12: 0000000000000004
[  111.366625][  T227] R13: 00007fd229423760 R14: 0000000000000004 R15: 00007fd22941e9c0
| [  111.482937][  T227] ------------[ cut here ]------------
| [ 111.483244][ T227] WARNING: CPU: 0 PID: 227 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) 
| [  111.483618][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  111.484401][  T227] Tainted: [W]=WARN
[  111.484548][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 111.484805][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.485052][ T227] 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
[  111.485701][  T227] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  111.485944][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  111.486234][  T227] RDX: 0000000000000000 RSI: ffff8880025b2c98 RDI: ffff88800b5fade8
[  111.486507][  T227] RBP: ffffffffb9923440 R08: 0000000000000000 R09: fffffbfff6efd83c
[  111.486781][  T227] R10: ffffffffb77ec1e7 R11: ffff88800b5fa300 R12: 0000000000000000
[  111.487064][  T227] R13: ffff8880025b2128 R14: ffff8880025b2008 R15: ffff8880025b2000
[  111.487340][  T227] FS:  00007fd229226740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  111.487657][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  111.487997][  T227] CR2: 00007fd2293da733 CR3: 000000000b4aa004 CR4: 0000000000772ef0
[  111.488288][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  111.488565][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  111.488837][  T227] PKRU: 55555554
[  111.488976][  T227] Call Trace:
[  111.489126][  T227]  <TASK>
[ 111.489224][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.489411][ T227] ? __warn (kernel/panic.c:748) 
[ 111.489554][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.489744][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 111.489934][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 111.490086][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 111.490274][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 111.490472][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.490667][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 111.490905][ T227] ? _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) 
[ 111.491108][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 111.491303][ T227] register_netdevice (net/core/dev.c:11003) 
[ 111.491494][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 111.491690][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 111.491899][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 111.492145][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 111.492404][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 111.492643][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 111.492828][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 111.493034][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 111.493275][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 111.493457][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 111.493649][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 111.493837][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 111.494037][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 111.494187][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 111.494378][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 111.494565][ T227] ? 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) 
[ 111.494757][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 111.494954][ T227] ksys_write (fs/read_write.c:731) 
[ 111.495121][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 111.495345][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 111.495582][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 111.495792][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  111.496039][  T227] RIP: 0033:0x7fd229367b77
[ 111.496230][ T227] 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
[  111.496865][  T227] RSP: 002b:00007ffc85d34ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  111.497152][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd229367b77
[  111.497430][  T227] RDX: 0000000000000002 RSI: 0000559eef30f330 RDI: 0000000000000001
[  111.497706][  T227] RBP: 0000559eef30f330 R08: 0000000000000000 R09: 00007fd2293da4e0
[  111.497981][  T227] R10: 00007fd2293da3e0 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