======================================
| 0
| xx__-> [    9.667539][  T244] ------------[ cut here ]------------
| [ 9.668449][ T244] WARNING: CPU: 2 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) 
| [    9.668906][  T244] Modules linked in: netdevsim
[    9.669506][  T244] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.669809][ T244] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.670117][ 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
[    9.670891][  T244] RSP: 0018:ffffc900004e7520 EFLAGS: 00010246
[    9.671192][  T244] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.671541][  T244] RDX: 0000000000000000 RSI: ffff88800e262c98 RDI: ffff8880095f50f8
[    9.671879][  T244] RBP: ffff888005260040 R08: 0000000000000000 R09: fffffbfff1a3d83c
[    9.672229][  T244] R10: ffffffff8d1ec1e7 R11: ffff8880095f45c0 R12: 0000000000000000
[    9.672575][  T244] R13: ffff88800e262128 R14: ffff88800e262008 R15: ffff88800e262000
[    9.672912][  T244] FS:  00007f95fee1d740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.673317][  T244] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.673606][  T244] CR2: 0000564de4d9b2f8 CR3: 000000000a6e0001 CR4: 0000000000772ef0
[    9.673961][  T244] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.674313][  T244] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.674655][  T244] PKRU: 55555554
[    9.674837][  T244] Call Trace:
[    9.675035][  T244]  <TASK>
[ 9.675165][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.675401][ T244] ? __warn (kernel/panic.c:748) 
[ 9.675586][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.675818][ T244] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.676070][ T244] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.676251][ T244] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.676483][ T244] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.676726][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.676970][ T244] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.677275][ 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) 
[ 9.677515][ T244] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.677751][ T244] register_netdevice (net/core/dev.c:11003) 
[ 9.678004][ T244] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.678251][ T244] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.678500][ T244] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.678796][ T244] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.678979][ T244] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.679290][ T244] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.679580][ T244] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.679875][ T244] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.680126][ T244] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.680420][ T244] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.680673][ 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)) 
[ 9.680861][ T244] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.681115][ T244] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.681357][ T244] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.681595][ T244] driver_probe_device (drivers/base/dd.c:830) 
[ 9.681834][ T244] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.682080][ T244] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.682371][ T244] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.682606][ T244] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.682836][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.683076][ T244] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.683307][ T244] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.683545][ T244] __device_attach (drivers/base/dd.c:1030) 
[ 9.683775][ T244] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.684013][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.684253][ 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) 
[ 9.684490][ T244] bus_probe_device (drivers/base/bus.c:537) 
[ 9.684730][ T244] device_add (drivers/base/core.c:3672) 
[ 9.684969][ T244] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.685211][ T244] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.685453][ T244] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.685746][ T244] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.686056][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.686287][ T244] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.686526][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.686753][ T244] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.687005][ T244] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.687192][ T244] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.687427][ T244] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.687653][ 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) 
[ 9.687897][ T244] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.688143][ T244] ksys_write (fs/read_write.c:731) 
[ 9.688325][ T244] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.688554][ T244] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.688797][ T244] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.689041][ T244] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.689319][  T244] RIP: 0033:0x7f95fef5eb77
[ 9.689571][ 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
[    9.690391][  T244] RSP: 002b:00007ffc7bf34ae8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.690741][  T244] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f95fef5eb77
[    9.691109][  T244] RDX: 0000000000000005 RSI: 0000564de4d9a2f0 RDI: 0000000000000001
[    9.691445][  T244] RBP: 0000564de4d9a2f0 R08: 0000000000000004 R09: 0000000000000077
[    9.691788][  T244] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.692132][  T244] R13: 00007f95ff01a760 R14: 0000000000000005 R15: 00007f95ff0159c0
| [    9.706006][  T244] ------------[ cut here ]------------
| [ 9.706267][ T244] WARNING: CPU: 2 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) 
| [    9.706707][  T244] Modules linked in: netdevsim
| [    9.707345][  T244] Tainted: [W]=WARN
[    9.707526][  T244] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.707810][ T244] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.708108][ 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
[    9.708865][  T244] RSP: 0018:ffffc900004e7520 EFLAGS: 00010246
[    9.709240][  T244] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.709578][  T244] RDX: 0000000000000000 RSI: ffff88800e2aac98 RDI: ffff8880095f50f8
[    9.709915][  T244] RBP: ffff888005260040 R08: 0000000000000000 R09: fffffbfff1a3d83c
[    9.710258][  T244] R10: ffffffff8d1ec1e7 R11: ffff8880095f45c0 R12: 0000000000000000
[    9.710600][  T244] R13: ffff88800e2aa128 R14: ffff88800e2aa008 R15: ffff88800e2aa000
[    9.710930][  T244] FS:  00007f95fee1d740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.711326][  T244] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.711607][  T244] CR2: 0000564de4d9b2f8 CR3: 000000000a6e0001 CR4: 0000000000772ef0
[    9.711940][  T244] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.712283][  T244] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.712612][  T244] PKRU: 55555554
[    9.712794][  T244] Call Trace:
[    9.712970][  T244]  <TASK>
[ 9.713107][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.713337][ T244] ? __warn (kernel/panic.c:748) 
[ 9.713516][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.713751][ T244] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.713995][ T244] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.714177][ T244] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.714408][ T244] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.714656][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.714897][ T244] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.715196][ 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) 
[ 9.715430][ T244] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.715666][ T244] register_netdevice (net/core/dev.c:11003) 
[ 9.715901][ T244] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.716159][ T244] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.716407][ T244] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.716696][ T244] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.716877][ T244] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.717181][ T244] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.717470][ T244] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.717763][ T244] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.718016][ T244] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.718303][ T244] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.718536][ 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)) 
[ 9.718716][ T244] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.718956][ T244] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.719201][ T244] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.719440][ T244] driver_probe_device (drivers/base/dd.c:830) 
[ 9.719671][ T244] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.719905][ T244] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.720194][ T244] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.720427][ T244] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.720661][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.720894][ T244] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.721147][ T244] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.721386][ T244] __device_attach (drivers/base/dd.c:1030) 
[ 9.721616][ T244] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.721844][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.722084][ 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) 
[ 9.722323][ T244] bus_probe_device (drivers/base/bus.c:537) 
[ 9.722559][ T244] device_add (drivers/base/core.c:3672) 
[ 9.722797][ T244] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.723036][ T244] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.723277][ T244] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.723572][ T244] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.723865][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.724107][ T244] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.724342][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.724576][ T244] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.724810][ T244] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.725007][ T244] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.725244][ T244] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.725474][ 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) 
[ 9.725710][ T244] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.725947][ T244] ksys_write (fs/read_write.c:731) 
[ 9.726136][ T244] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.726368][ T244] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.726610][ T244] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.726843][ T244] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.727131][  T244] RIP: 0033:0x7f95fef5eb77
[ 9.727365][ 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
[    9.728138][  T244] RSP: 002b:00007ffc7bf34ae8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.728473][  T244] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f95fef5eb77
[    9.728806][  T244] RDX: 0000000000000005 RSI: 0000564de4d9a2f0 RDI: 0000000000000001
[    9.729146][  T244] RBP: 0000564de4d9a2f0 R08: 0000000000000004 R09: 0000000000000077
[    9.729483][  T244] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.729814][  T244] R13: 00007f95ff01a760 R14: 0000000000000005 R15: 00007f95ff0159c0
| [    9.743430][  T244] ------------[ cut here ]------------
| [ 9.743684][ T244] WARNING: CPU: 2 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) 
| [    9.744142][  T244] Modules linked in: netdevsim
| [    9.744767][  T244] Tainted: [W]=WARN
[    9.744950][  T244] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.745242][ T244] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.745526][ 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
[    9.746314][  T244] RSP: 0018:ffffc900004e7520 EFLAGS: 00010246
[    9.746603][  T244] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.746936][  T244] RDX: 0000000000000000 RSI: ffff88800e2cac98 RDI: ffff8880095f50f8
[    9.747356][  T244] RBP: ffff888005260040 R08: 0000000000000000 R09: fffffbfff1a3d83c
[    9.747690][  T244] R10: ffffffff8d1ec1e7 R11: ffff8880095f45c0 R12: 0000000000000000
[    9.748042][  T244] R13: ffff88800e2ca128 R14: ffff88800e2ca008 R15: ffff88800e2ca000
[    9.748372][  T244] FS:  00007f95fee1d740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.748754][  T244] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.749049][  T244] CR2: 0000564de4d9b2f8 CR3: 000000000a6e0001 CR4: 0000000000772ef0
[    9.749383][  T244] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.749714][  T244] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.750071][  T244] PKRU: 55555554
[    9.750251][  T244] Call Trace:
[    9.750426][  T244]  <TASK>
[ 9.750568][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.750798][ T244] ? __warn (kernel/panic.c:748) 
[ 9.750999][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.751233][ T244] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.751471][ T244] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.751649][ T244] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.751880][ T244] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.752137][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.752377][ T244] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.752671][ 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) 
[ 9.752907][ T244] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.753155][ T244] register_netdevice (net/core/dev.c:11003) 
[ 9.753392][ T244] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.753634][ T244] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.753879][ T244] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.754198][ T244] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.754385][ T244] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.754685][ T244] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.754975][ T244] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.755279][ T244] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.755519][ T244] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.755807][ T244] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.756056][ 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)) 
[ 9.756237][ T244] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.756476][ T244] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.756716][ T244] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.756950][ T244] driver_probe_device (drivers/base/dd.c:830) 
[ 9.757193][ T244] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.757426][ T244] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.757711][ T244] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.757940][ T244] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.758196][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.758428][ T244] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.758667][ T244] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.758904][ T244] __device_attach (drivers/base/dd.c:1030) 
[ 9.759148][ T244] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.759381][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.759612][ 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) 
[ 9.759850][ T244] bus_probe_device (drivers/base/bus.c:537) 
[ 9.760092][ T244] device_add (drivers/base/core.c:3672) 
[ 9.760327][ T244] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.760565][ T244] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.760809][ T244] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.761117][ T244] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.761413][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.761640][ T244] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.761879][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.762414][ T244] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.762683][ T244] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.762879][ T244] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.763140][ T244] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.763369][ 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) 
[ 9.763609][ T244] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.763847][ T244] ksys_write (fs/read_write.c:731) 
[ 9.764203][ T244] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.764440][ T244] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.764681][ T244] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.764931][ T244] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.765235][  T244] RIP: 0033:0x7f95fef5eb77
[ 9.765469][ 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
[    9.766256][  T244] RSP: 002b:00007ffc7bf34ae8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.766605][  T244] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f95fef5eb77
[    9.766933][  T244] RDX: 0000000000000005 RSI: 0000564de4d9a2f0 RDI: 0000000000000001
[    9.767284][  T244] RBP: 0000564de4d9a2f0 R08: 0000000000000004 R09: 0000000000000077
[    9.767619][  T244] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.767953][  T244] R13: 00007f95ff01a760 R14: 0000000000000005 R15: 00007f95ff0159c0
| [    9.788633][  T244] ------------[ cut here ]------------
| [ 9.788881][ T244] WARNING: CPU: 2 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) 
| [    9.789361][  T244] Modules linked in: netdevsim
| [    9.790020][  T244] Tainted: [W]=WARN
[    9.790210][  T244] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.790499][ T244] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.790785][ 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
[    9.791554][  T244] RSP: 0018:ffffc900004e7520 EFLAGS: 00010246
[    9.791841][  T244] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.792209][  T244] RDX: 0000000000000000 RSI: ffff88800e2eac98 RDI: ffff8880095f50f8
[    9.792546][  T244] RBP: ffff888005260040 R08: 0000000000000000 R09: fffffbfff1a3d83c
[    9.792896][  T244] R10: ffffffff8d1ec1e7 R11: ffff8880095f45c0 R12: 0000000000000000
[    9.793251][  T244] R13: ffff88800e2ea128 R14: ffff88800e2ea008 R15: ffff88800e2ea000
[    9.793581][  T244] FS:  00007f95fee1d740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.793963][  T244] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.794288][  T244] CR2: 0000564de4d9b2f8 CR3: 000000000a6e0001 CR4: 0000000000772ef0
[    9.794617][  T244] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.794941][  T244] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.795348][  T244] PKRU: 55555554
[    9.795523][  T244] Call Trace:
[    9.795716][  T244]  <TASK>
[ 9.795843][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.796088][ T244] ? __warn (kernel/panic.c:748) 
[ 9.796269][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.796499][ T244] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.796734][ T244] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.796916][ T244] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.797158][ T244] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.797405][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.797642][ T244] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.797937][ 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) 
[ 9.798216][ T244] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.798454][ T244] register_netdevice (net/core/dev.c:11003) 
[ 9.798691][ T244] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.798943][ T244] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.799217][ T244] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.799508][ T244] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.799690][ T244] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.800026][ T244] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.800317][ T244] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.800633][ T244] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.800880][ T244] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.801179][ T244] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.801411][ 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)) 
[ 9.801589][ T244] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.801825][ T244] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.802082][ T244] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.802319][ T244] driver_probe_device (drivers/base/dd.c:830) 
[ 9.802552][ T244] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.802782][ T244] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.803088][ T244] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.803326][ T244] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.803555][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.803784][ T244] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.804054][ T244] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.804292][ T244] __device_attach (drivers/base/dd.c:1030) 
[ 9.804521][ T244] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.804748][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.804979][ 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) 
[ 9.805230][ T244] bus_probe_device (drivers/base/bus.c:537) 
[ 9.805463][ T244] device_add (drivers/base/core.c:3672) 
[ 9.805695][ T244] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.805926][ T244] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.806180][ T244] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.806473][ T244] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.806769][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.807024][ T244] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.807266][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.807501][ T244] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.807736][ T244] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.807921][ T244] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.808196][ T244] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.808425][ 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) 
[ 9.808663][ T244] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.808899][ T244] ksys_write (fs/read_write.c:731) 
[ 9.809089][ T244] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.809322][ T244] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.809564][ T244] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.809794][ T244] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.810086][  T244] RIP: 0033:0x7f95fef5eb77
[ 9.810319][ 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
[    9.811110][  T244] RSP: 002b:00007ffc7bf34ae8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.811449][  T244] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f95fef5eb77
[    9.811785][  T244] RDX: 0000000000000005 RSI: 0000564de4d9a2f0 RDI: 0000000000000001
[    9.812153][  T244] RBP: 0000564de4d9a2f0 R08: 0000000000000004 R09: 0000000000000077
[    9.812494][  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