======================================
| 0
| xx__-> [    9.883956][  T246] ------------[ cut here ]------------
| [ 9.884386][ T246] WARNING: CPU: 2 PID: 246 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) 
| [    9.884851][  T246] Modules linked in: netdevsim
[    9.885589][  T246] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.885878][ T246] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.886203][ T246] 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
[    9.886973][  T246] RSP: 0018:ffffc90000a97520 EFLAGS: 00010246
[    9.887297][  T246] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.887639][  T246] RDX: 0000000000000000 RSI: ffff88800bc6ac98 RDI: ffff88800908ae38
[    9.887986][  T246] RBP: ffff888005f80040 R08: 0000000000000000 R09: fffffbfff7a3d83c
[    9.888341][  T246] R10: ffffffffbd1ec1e7 R11: ffff88800908a300 R12: 0000000000000000
[    9.888678][  T246] R13: ffff88800bc6a128 R14: ffff88800bc6a008 R15: ffff88800bc6a000
[    9.889021][  T246] FS:  00007fd65de19740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.889428][  T246] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.889716][  T246] CR2: 00007f042abe4960 CR3: 000000000b962001 CR4: 0000000000772ef0
[    9.890052][  T246] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.890411][  T246] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.890751][  T246] PKRU: 55555554
[    9.890931][  T246] Call Trace:
[    9.891127][  T246]  <TASK>
[ 9.891258][ T246] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.891499][ T246] ? __warn (kernel/panic.c:748) 
[ 9.891682][ T246] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.891916][ T246] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.892166][ T246] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.892347][ T246] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.892583][ T246] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.892827][ T246] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.893070][ T246] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.893372][ T246] ? _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) 
[ 9.893614][ T246] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.893849][ T246] register_netdevice (net/core/dev.c:11003) 
[ 9.894106][ T246] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.894348][ T246] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.894600][ T246] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.894892][ T246] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.895076][ T246] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.895387][ T246] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.895678][ T246] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.895974][ T246] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.896232][ T246] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.896517][ T246] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.896752][ T246] ? 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)) 
[ 9.896935][ T246] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.897187][ T246] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.897427][ T246] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.897659][ T246] driver_probe_device (drivers/base/dd.c:830) 
[ 9.897894][ T246] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.898148][ T246] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.898434][ T246] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.898671][ T246] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.898898][ T246] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.899142][ T246] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.899371][ T246] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.899608][ T246] __device_attach (drivers/base/dd.c:1030) 
[ 9.899838][ T246] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.900065][ T246] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.900315][ T246] ? 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) 
[ 9.900567][ T246] bus_probe_device (drivers/base/bus.c:537) 
[ 9.900801][ T246] device_add (drivers/base/core.c:3672) 
[ 9.901037][ T246] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.901281][ T246] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.901523][ T246] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.901813][ T246] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.902123][ T246] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.902353][ T246] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.902592][ T246] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.902818][ T246] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.903056][ T246] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.903254][ T246] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.903491][ T246] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.903722][ T246] ? 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) 
[ 9.903962][ T246] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.904214][ T246] ksys_write (fs/read_write.c:731) 
[ 9.904395][ T246] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.904621][ T246] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.904863][ T246] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.905107][ T246] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.905394][  T246] RIP: 0033:0x7fd65df5ab77
[ 9.905635][ T246] 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
[    9.906410][  T246] RSP: 002b:00007ffcf7b44758 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.906757][  T246] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fd65df5ab77
[    9.907109][  T246] RDX: 0000000000000005 RSI: 000055d4b29c52f0 RDI: 0000000000000001
[    9.907447][  T246] RBP: 000055d4b29c52f0 R08: 0000000000000004 R09: 0000000000000077
[    9.907784][  T246] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.908134][  T246] R13: 00007fd65e016760 R14: 0000000000000005 R15: 00007fd65e0119c0
| [    9.922339][  T246] ------------[ cut here ]------------
| [ 9.922600][ T246] WARNING: CPU: 2 PID: 246 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) 
| [    9.923045][  T246] Modules linked in: netdevsim
| [    9.923690][  T246] Tainted: [W]=WARN
[    9.923875][  T246] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.924165][ T246] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.924458][ T246] 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
[    9.925249][  T246] RSP: 0018:ffffc90000a97520 EFLAGS: 00010246
[    9.925536][  T246] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.925864][  T246] RDX: 0000000000000000 RSI: ffff88800a172c98 RDI: ffff88800908ae38
[    9.926259][  T246] RBP: ffff888005f80040 R08: 0000000000000000 R09: fffffbfff7a3d83c
[    9.926595][  T246] R10: ffffffffbd1ec1e7 R11: ffff88800908a300 R12: 0000000000000000
[    9.926930][  T246] R13: ffff88800a172128 R14: ffff88800a172008 R15: ffff88800a172000
[    9.927281][  T246] FS:  00007fd65de19740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.927670][  T246] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.927959][  T246] CR2: 00007f042abe4960 CR3: 000000000b962001 CR4: 0000000000772ef0
[    9.928306][  T246] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.928637][  T246] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.928971][  T246] PKRU: 55555554
[    9.929171][  T246] Call Trace:
[    9.929351][  T246]  <TASK>
[ 9.929475][ T246] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.929705][ T246] ? __warn (kernel/panic.c:748) 
[ 9.929887][ T246] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.930130][ T246] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.930367][ T246] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.930560][ T246] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.930794][ T246] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.931036][ T246] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.931291][ T246] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.931580][ T246] ? _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) 
[ 9.931816][ T246] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.932050][ T246] register_netdevice (net/core/dev.c:11003) 
[ 9.932298][ T246] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.932547][ T246] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.932798][ T246] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.933087][ T246] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.933300][ T246] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.933598][ T246] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.933892][ T246] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.934198][ T246] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.934442][ T246] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.934731][ T246] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.934967][ T246] ? 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)) 
[ 9.935158][ T246] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.935397][ T246] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.935635][ T246] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.935874][ T246] driver_probe_device (drivers/base/dd.c:830) 
[ 9.936117][ T246] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.936351][ T246] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.936633][ T246] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.936865][ T246] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.937121][ T246] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.937356][ T246] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.937591][ T246] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.937825][ T246] __device_attach (drivers/base/dd.c:1030) 
[ 9.938057][ T246] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.938304][ T246] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.938538][ T246] ? 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) 
[ 9.938776][ T246] bus_probe_device (drivers/base/bus.c:537) 
[ 9.939013][ T246] device_add (drivers/base/core.c:3672) 
[ 9.939264][ T246] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.939496][ T246] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.939738][ T246] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.940031][ T246] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.940335][ T246] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.940573][ T246] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.940808][ T246] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.941045][ T246] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.941307][ T246] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.941497][ T246] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.941731][ T246] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.941957][ T246] ? 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) 
[ 9.942206][ T246] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.942441][ T246] ksys_write (fs/read_write.c:731) 
[ 9.942628][ T246] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.942855][ T246] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.943111][ T246] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.943345][ T246] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.943627][  T246] RIP: 0033:0x7fd65df5ab77
[ 9.943862][ T246] 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
[    9.944635][  T246] RSP: 002b:00007ffcf7b44758 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.944971][  T246] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fd65df5ab77
[    9.945331][  T246] RDX: 0000000000000005 RSI: 000055d4b29c52f0 RDI: 0000000000000001
[    9.945671][  T246] RBP: 000055d4b29c52f0 R08: 0000000000000004 R09: 0000000000000077
[    9.946006][  T246] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.946353][  T246] R13: 00007fd65e016760 R14: 0000000000000005 R15: 00007fd65e0119c0
| [    9.960249][  T246] ------------[ cut here ]------------
| [ 9.960520][ T246] WARNING: CPU: 2 PID: 246 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) 
| [    9.960963][  T246] Modules linked in: netdevsim
| [    9.961614][  T246] Tainted: [W]=WARN
[    9.961794][  T246] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.962074][ T246] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.962397][ T246] 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
[    9.963173][  T246] RSP: 0018:ffffc90000a97520 EFLAGS: 00010246
[    9.963463][  T246] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.963797][  T246] RDX: 0000000000000000 RSI: ffff88800b85ac98 RDI: ffff88800908ae38
[    9.964143][  T246] RBP: ffff888005f80040 R08: 0000000000000000 R09: fffffbfff7a3d83c
[    9.964478][  T246] R10: ffffffffbd1ec1e7 R11: ffff88800908a300 R12: 0000000000000000
[    9.964818][  T246] R13: ffff88800b85a128 R14: ffff88800b85a008 R15: ffff88800b85a000
[    9.965184][  T246] FS:  00007fd65de19740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.965574][  T246] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.965860][  T246] CR2: 00007f042abe4960 CR3: 000000000b962001 CR4: 0000000000772ef0
[    9.966216][  T246] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.966548][  T246] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.966884][  T246] PKRU: 55555554
[    9.967061][  T246] Call Trace:
[    9.967247][  T246]  <TASK>
[ 9.967372][ T246] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.967607][ T246] ? __warn (kernel/panic.c:748) 
[ 9.967790][ T246] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.968023][ T246] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.968275][ T246] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.968455][ T246] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.968687][ T246] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.968932][ T246] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.969220][ T246] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.969520][ T246] ? _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) 
[ 9.969759][ T246] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.969994][ T246] register_netdevice (net/core/dev.c:11003) 
[ 9.970250][ T246] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.970501][ T246] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.970752][ T246] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.971046][ T246] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.971245][ T246] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.971545][ T246] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.971837][ T246] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.972330][ T246] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.972591][ T246] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.972883][ T246] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.973152][ T246] ? 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)) 
[ 9.973334][ T246] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.973578][ T246] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.973813][ T246] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.974047][ T246] driver_probe_device (drivers/base/dd.c:830) 
[ 9.974294][ T246] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.974534][ T246] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.974815][ T246] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.975047][ T246] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.975419][ T246] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.975659][ T246] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.975888][ T246] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.976139][ T246] __device_attach (drivers/base/dd.c:1030) 
[ 9.976377][ T246] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.976604][ T246] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.976837][ T246] ? 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) 
[ 9.977074][ T246] bus_probe_device (drivers/base/bus.c:537) 
[ 9.977334][ T246] device_add (drivers/base/core.c:3672) 
[ 9.977570][ T246] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.977801][ T246] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.978044][ T246] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.978363][ T246] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.978661][ T246] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.978894][ T246] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.979153][ T246] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.979384][ T246] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.979623][ T246] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.979817][ T246] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.980055][ T246] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.980541][ T246] ? 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) 
[ 9.980797][ T246] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.981039][ T246] ksys_write (fs/read_write.c:731) 
[ 9.981236][ T246] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.981470][ T246] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.981712][ T246] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.981955][ T246] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.982249][  T246] RIP: 0033:0x7fd65df5ab77
[ 9.982488][ T246] 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
[    9.983289][  T246] RSP: 002b:00007ffcf7b44758 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.983628][  T246] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fd65df5ab77
[    9.983960][  T246] RDX: 0000000000000005 RSI: 000055d4b29c52f0 RDI: 0000000000000001
[    9.984305][  T246] RBP: 000055d4b29c52f0 R08: 0000000000000004 R09: 0000000000000077
[    9.984637][  T246] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.984978][  T246] R13: 00007fd65e016760 R14: 0000000000000005 R15: 00007fd65e0119c0
| [   10.005828][  T246] ------------[ cut here ]------------
| [ 10.006086][ T246] WARNING: CPU: 2 PID: 246 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) 
| [   10.006572][  T246] Modules linked in: netdevsim
| [   10.007231][  T246] Tainted: [W]=WARN
[   10.007414][  T246] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.007703][ T246] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.007991][ T246] 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
[   10.008848][  T246] RSP: 0018:ffffc90000a97520 EFLAGS: 00010246
[   10.009155][  T246] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.009489][  T246] RDX: 0000000000000000 RSI: ffff888009a3ac98 RDI: ffff88800908ae38
[   10.009819][  T246] RBP: ffff888005f80040 R08: 0000000000000000 R09: fffffbfff7a3d83c
[   10.010171][  T246] R10: ffffffffbd1ec1e7 R11: ffff88800908a300 R12: 0000000000000000
[   10.010522][  T246] R13: ffff888009a3a128 R14: ffff888009a3a008 R15: ffff888009a3a000
[   10.010869][  T246] FS:  00007fd65de19740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   10.011297][  T246] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.011580][  T246] CR2: 00007f042abe4960 CR3: 000000000b962001 CR4: 0000000000772ef0
[   10.011911][  T246] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.012270][  T246] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.012606][  T246] PKRU: 55555554
[   10.012785][  T246] Call Trace:
[   10.012962][  T246]  <TASK>
[ 10.013089][ T246] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.013337][ T246] ? __warn (kernel/panic.c:748) 
[ 10.013517][ T246] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.013753][ T246] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.013988][ T246] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.014209][ T246] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.014438][ T246] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.014682][ T246] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.014921][ T246] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.015236][ T246] ? _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) 
[ 10.015481][ T246] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.015718][ T246] register_netdevice (net/core/dev.c:11003) 
[ 10.015952][ T246] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.016208][ T246] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.016456][ T246] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.016745][ T246] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 10.016925][ T246] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.017265][ T246] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.017555][ T246] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 10.017851][ T246] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 10.018105][ T246] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 10.018397][ T246] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 10.018628][ T246] ? 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)) 
[ 10.018814][ T246] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 10.019051][ T246] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 10.019303][ T246] __driver_probe_device (drivers/base/dd.c:800) 
[ 10.019536][ T246] driver_probe_device (drivers/base/dd.c:830) 
[ 10.019767][ T246] __device_attach_driver (drivers/base/dd.c:959) 
[ 10.020000][ T246] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 10.020316][ T246] bus_for_each_drv (drivers/base/bus.c:462) 
[ 10.020565][ T246] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 10.020791][ T246] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.021023][ T246] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.021267][ T246] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 10.021511][ T246] __device_attach (drivers/base/dd.c:1030) 
[ 10.021743][ T246] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 10.021972][ T246] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.022224][ T246] ? 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) 
[ 10.022464][ T246] bus_probe_device (drivers/base/bus.c:537) 
[ 10.022698][ T246] device_add (drivers/base/core.c:3672) 
[ 10.022931][ T246] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 10.023204][ T246] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 10.023450][ T246] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 10.023745][ T246] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 10.024044][ T246] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.024288][ T246] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.024529][ T246] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.024758][ T246] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.024996][ T246] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.025214][ T246] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.025455][ T246] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 10.025688][ T246] ? 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) 
[ 10.025927][ T246] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 10.026180][ T246] ksys_write (fs/read_write.c:731) 
[ 10.026366][ T246] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.026596][ T246] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.026835][ T246] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.027069][ T246] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.027365][  T246] RIP: 0033:0x7fd65df5ab77
[ 10.027604][ T246] 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
[   10.028397][  T246] RSP: 002b:00007ffcf7b44758 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.028736][  T246] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fd65df5ab77
[   10.029074][  T246] RDX: 0000000000000005 RSI: 000055d4b29c52f0 RDI: 0000000000000001
[   10.029420][  T246] RBP: 000055d4b29c52f0 R08: 0000000000000004 R09: 0000000000000077
[   10.029751][  T246] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005


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