======================================
| 0
| xx__-> [    9.397333][  T244] ------------[ cut here ]------------
| [ 9.397779][ T244] WARNING: CPU: 3 PID: 244 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) 
| [    9.398530][  T244] Modules linked in: netdevsim
[    9.399390][  T244] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.399858][ T244] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.400298][ T244] 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
[    9.401490][  T244] RSP: 0018:ffffc90000707520 EFLAGS: 00010246
[    9.401939][  T244] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.402449][  T244] RDX: 0000000000000000 RSI: ffff888005702c98 RDI: ffff88800aa40b78
[    9.403114][  T244] RBP: ffff88800aa10040 R08: 0000000000000000 R09: fffffbfff353d83c
[    9.403563][  T244] R10: ffffffff9a9ec1e7 R11: ffff88800aa40040 R12: 0000000000000000
[    9.404094][  T244] R13: ffff888005702128 R14: ffff888005702008 R15: ffff888005702000
[    9.404603][  T244] FS:  00007f5073d55740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[    9.405213][  T244] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.405652][  T244] CR2: 000055d34ac4c2f8 CR3: 00000000088b4004 CR4: 0000000000772ef0
[    9.406190][  T244] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.406698][  T244] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.407220][  T244] PKRU: 55555554
[    9.407485][  T244] Call Trace:
[    9.407754][  T244]  <TASK>
[ 9.407957][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.408305][ T244] ? __warn (kernel/panic.c:748) 
[ 9.408576][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.408938][ T244] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.409291][ T244] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.409553][ T244] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.409918][ T244] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.410277][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.410649][ T244] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.411101][ T244] ? _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) 
[ 9.411456][ T244] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.411805][ T244] register_netdevice (net/core/dev.c:11003) 
[ 9.412179][ T244] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.412543][ T244] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.412933][ T244] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.413369][ T244] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.413639][ T244] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.414107][ T244] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.414548][ T244] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.415010][ T244] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.415384][ T244] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.415835][ T244] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.416201][ T244] ? 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)) 
[ 9.416464][ T244] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.416826][ T244] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.417204][ T244] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.417551][ T244] driver_probe_device (drivers/base/dd.c:830) 
[ 9.417920][ T244] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.418270][ T244] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.418686][ T244] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.419049][ T244] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.419390][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.419730][ T244] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.420085][ T244] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.420438][ T244] __device_attach (drivers/base/dd.c:1030) 
[ 9.420780][ T244] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.421146][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.421478][ T244] ? 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) 
[ 9.421825][ T244] bus_probe_device (drivers/base/bus.c:537) 
[ 9.422204][ T244] device_add (drivers/base/core.c:3672) 
[ 9.422550][ T244] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.422906][ T244] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.423275][ T244] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.423724][ T244] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.424196][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.424533][ T244] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.424902][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.425248][ T244] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.425593][ T244] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.425910][ T244] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.426263][ T244] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.426605][ T244] ? 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) 
[ 9.427003][ T244] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.427359][ T244] ksys_write (fs/read_write.c:731) 
[ 9.427622][ T244] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.427975][ T244] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.428337][ T244] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.428682][ T244] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.429129][  T244] RIP: 0033:0x7f5073e96b77
[ 9.429476][ T244] 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
[    9.430629][  T244] RSP: 002b:00007fffae23a948 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.431172][  T244] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f5073e96b77
[    9.431692][  T244] RDX: 0000000000000005 RSI: 000055d34ac4b2f0 RDI: 0000000000000001
[    9.432214][  T244] RBP: 000055d34ac4b2f0 R08: 0000000000000004 R09: 0000000000000077
[    9.432721][  T244] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.433246][  T244] R13: 00007f5073f52760 R14: 0000000000000005 R15: 00007f5073f4d9c0
| [    9.446496][  T244] ------------[ cut here ]------------
| [ 9.446793][ T244] WARNING: CPU: 3 PID: 244 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) 
| [    9.448327][  T244] Modules linked in: netdevsim
| [    9.449313][  T244] Tainted: [W]=WARN
[    9.449549][  T244] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.450147][ T244] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.450513][ T244] 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
[    9.451839][  T244] RSP: 0018:ffffc90000707520 EFLAGS: 00010246
[    9.452441][  T244] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.453043][  T244] RDX: 0000000000000000 RSI: ffff88800d0a2c98 RDI: ffff88800aa40b78
[    9.453489][  T244] RBP: ffff88800aa10040 R08: 0000000000000000 R09: fffffbfff353d83c
[    9.454112][  T244] R10: ffffffff9a9ec1e7 R11: ffff88800aa40040 R12: 0000000000000000
[    9.454587][  T244] R13: ffff88800d0a2128 R14: ffff88800d0a2008 R15: ffff88800d0a2000
[    9.455252][  T244] FS:  00007f5073d55740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[    9.455803][  T244] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.456350][  T244] CR2: 000055d34ac4c2f8 CR3: 00000000088b4004 CR4: 0000000000772ef0
[    9.456827][  T244] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.457501][  T244] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.458080][  T244] PKRU: 55555554
[    9.458306][  T244] Call Trace:
[    9.458557][  T244]  <TASK>
[ 9.458747][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.459252][ T244] ? __warn (kernel/panic.c:748) 
[ 9.459460][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.459785][ T244] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.460258][ T244] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.460489][ T244] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.460826][ T244] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.461351][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.461651][ T244] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.462185][ T244] ? _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) 
[ 9.462513][ T244] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.463027][ T244] register_netdevice (net/core/dev.c:11003) 
[ 9.463314][ T244] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.463656][ T244] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.464186][ T244] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.464554][ T244] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.464817][ T244] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.465409][ T244] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.466031][ T244] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.466411][ T244] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.466775][ T244] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.467376][ T244] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.467655][ T244] ? 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)) 
[ 9.468019][ T244] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.468344][ T244] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.468712][ T244] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.469240][ T244] driver_probe_device (drivers/base/dd.c:830) 
[ 9.469522][ T244] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.469995][ T244] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.470390][ T244] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.470732][ T244] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.471234][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.471518][ T244] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.472004][ T244] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.472327][ T244] __device_attach (drivers/base/dd.c:1030) 
[ 9.472658][ T244] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.473148][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.473439][ T244] ? 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) 
[ 9.473782][ T244] bus_probe_device (drivers/base/bus.c:537) 
[ 9.474431][ T244] device_add (drivers/base/core.c:3672) 
[ 9.474731][ T244] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.475186][ T244] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.475528][ T244] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.476141][ T244] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.476522][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.477035][ T244] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.477334][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.477655][ T244] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.478125][ T244] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.478404][ T244] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.478756][ T244] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.479328][ T244] ? 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) 
[ 9.479623][ T244] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.480090][ T244] ksys_write (fs/read_write.c:731) 
[ 9.480337][ T244] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.480674][ T244] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.481202][ T244] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.481487][ T244] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.482102][  T244] RIP: 0033:0x7f5073e96b77
[ 9.482391][ T244] 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
[    9.483685][  T244] RSP: 002b:00007fffae23a948 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.484334][  T244] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f5073e96b77
[    9.484773][  T244] RDX: 0000000000000005 RSI: 000055d34ac4b2f0 RDI: 0000000000000001
[    9.485373][  T244] RBP: 000055d34ac4b2f0 R08: 0000000000000004 R09: 0000000000000077
[    9.485880][  T244] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.486382][  T244] R13: 00007f5073f52760 R14: 0000000000000005 R15: 00007f5073f4d9c0
| [    9.501617][  T244] ------------[ cut here ]------------
| [ 9.501948][ T244] WARNING: CPU: 3 PID: 244 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) 
| [    9.502633][  T244] Modules linked in: netdevsim
| [    9.503692][  T244] Tainted: [W]=WARN
[    9.503969][  T244] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.504388][ T244] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.504824][ T244] 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
[    9.506054][  T244] RSP: 0018:ffffc90000707520 EFLAGS: 00010246
[    9.506482][  T244] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.507044][  T244] RDX: 0000000000000000 RSI: ffff88800d09ac98 RDI: ffff88800aa40b78
[    9.507549][  T244] RBP: ffff88800aa10040 R08: 0000000000000000 R09: fffffbfff353d83c
[    9.508159][  T244] R10: ffffffff9a9ec1e7 R11: ffff88800aa40040 R12: 0000000000000000
[    9.508661][  T244] R13: ffff88800d09a128 R14: ffff88800d09a008 R15: ffff88800d09a000
[    9.509179][  T244] FS:  00007f5073d55740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[    9.509760][  T244] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.510196][  T244] CR2: 000055d34ac4c2f8 CR3: 00000000088b4004 CR4: 0000000000772ef0
[    9.510728][  T244] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.511291][  T244] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.511808][  T244] PKRU: 55555554
[    9.512080][  T244] Call Trace:
[    9.512337][  T244]  <TASK>
[ 9.512512][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.512916][ T244] ? __warn (kernel/panic.c:748) 
[ 9.513174][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.513509][ T244] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.513888][ T244] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.514150][ T244] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.514490][ T244] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.514880][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.515253][ T244] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.515703][ T244] ? _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) 
[ 9.516107][ T244] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.516458][ T244] register_netdevice (net/core/dev.c:11003) 
[ 9.516809][ T244] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.517192][ T244] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.517552][ T244] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.518025][ T244] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.518288][ T244] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.518740][ T244] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.519217][ T244] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.519668][ T244] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.520048][ T244] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.520488][ T244] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.520895][ T244] ? 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)) 
[ 9.521148][ T244] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.521497][ T244] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.521838][ T244] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.522225][ T244] driver_probe_device (drivers/base/dd.c:830) 
[ 9.522567][ T244] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.522936][ T244] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.523360][ T244] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.523695][ T244] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.524106][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.524438][ T244] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.524788][ T244] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.525161][ T244] __device_attach (drivers/base/dd.c:1030) 
[ 9.525517][ T244] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.525942][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.526160][ T244] ? 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) 
[ 9.526373][ T244] bus_probe_device (drivers/base/bus.c:537) 
[ 9.526581][ T244] device_add (drivers/base/core.c:3672) 
[ 9.526788][ T244] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.527019][ T244] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.527242][ T244] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.527506][ T244] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.527772][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.527994][ T244] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.528204][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.528431][ T244] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.528642][ T244] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.528808][ T244] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.529051][ T244] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.529252][ T244] ? 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) 
[ 9.529466][ T244] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.529678][ T244] ksys_write (fs/read_write.c:731) 
[ 9.529834][ T244] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.530052][ T244] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.530267][ T244] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.530477][ T244] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.530730][  T244] RIP: 0033:0x7f5073e96b77
[ 9.530950][ T244] 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
[    9.531647][  T244] RSP: 002b:00007fffae23a948 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.531991][  T244] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f5073e96b77
[    9.532296][  T244] RDX: 0000000000000005 RSI: 000055d34ac4b2f0 RDI: 0000000000000001
[    9.532587][  T244] RBP: 000055d34ac4b2f0 R08: 0000000000000004 R09: 0000000000000077
[    9.532888][  T244] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.533185][  T244] R13: 00007f5073f52760 R14: 0000000000000005 R15: 00007f5073f4d9c0
| [    9.546117][  T244] ------------[ cut here ]------------
| [ 9.546339][ T244] WARNING: CPU: 3 PID: 244 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) 
| [    9.546739][  T244] Modules linked in: netdevsim
| [    9.547322][  T244] Tainted: [W]=WARN
[    9.547476][  T244] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.547730][ T244] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.548089][ T244] 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
[    9.548788][  T244] RSP: 0018:ffffc90000707520 EFLAGS: 00010246
[    9.549098][  T244] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.549397][  T244] RDX: 0000000000000000 RSI: ffff88800d03ac98 RDI: ffff88800aa40b78
[    9.549705][  T244] RBP: ffff88800aa10040 R08: 0000000000000000 R09: fffffbfff353d83c
[    9.550014][  T244] R10: ffffffff9a9ec1e7 R11: ffff88800aa40040 R12: 0000000000000000
[    9.550312][  T244] R13: ffff88800d03a128 R14: ffff88800d03a008 R15: ffff88800d03a000
[    9.550615][  T244] FS:  00007f5073d55740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[    9.550970][  T244] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.551222][  T244] CR2: 000055d34ac4c2f8 CR3: 00000000088b4004 CR4: 0000000000772ef0
[    9.551523][  T244] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.551834][  T244] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.552171][  T244] PKRU: 55555554
[    9.552324][  T244] Call Trace:
[    9.552475][  T244]  <TASK>
[ 9.552580][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.552783][ T244] ? __warn (kernel/panic.c:748) 
[ 9.552950][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.553156][ T244] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.553368][ T244] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.553526][ T244] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.553730][ T244] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.553958][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.554172][ T244] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.554430][ T244] ? _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) 
[ 9.554639][ T244] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.554872][ T244] register_netdevice (net/core/dev.c:11003) 
[ 9.555097][ T244] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.555311][ T244] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.555529][ T244] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.555797][ T244] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.555962][ T244] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.556232][ T244] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.556493][ T244] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.556755][ T244] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.556981][ T244] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.557239][ T244] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.557444][ T244] ? 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)) 
[ 9.557597][ T244] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.557811][ T244] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.558030][ T244] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.558248][ T244] driver_probe_device (drivers/base/dd.c:830) 
[ 9.558465][ T244] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.558670][ T244] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.558932][ T244] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.559138][ T244] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.559342][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.559546][ T244] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.559748][ T244] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.559968][ T244] __device_attach (drivers/base/dd.c:1030) 
[ 9.560172][ T244] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.560373][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.560577][ T244] ? 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) 
[ 9.560791][ T244] bus_probe_device (drivers/base/bus.c:537) 
[ 9.561027][ T244] device_add (drivers/base/core.c:3672) 
[ 9.561242][ T244] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.561440][ T244] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.561666][ T244] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.561940][ T244] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.562206][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.562412][ T244] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.562623][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.562833][ T244] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.563072][ T244] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.563235][ T244] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.563444][ T244] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.563644][ T244] ? 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) 
[ 9.563875][ T244] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.564088][ T244] ksys_write (fs/read_write.c:731) 
[ 9.564245][ T244] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.564445][ T244] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.564659][ T244] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.564877][ T244] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.565127][  T244] RIP: 0033:0x7f5073e96b77
[ 9.565333][ T244] 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
[    9.566074][  T244] RSP: 002b:00007fffae23a948 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.566381][  T244] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f5073e96b77
[    9.566686][  T244] RDX: 0000000000000005 RSI: 000055d34ac4b2f0 RDI: 0000000000000001
[    9.566999][  T244] RBP: 000055d34ac4b2f0 R08: 0000000000000004 R09: 0000000000000077
[    9.567301][  T244] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005


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