======================================
| 0
| xx__-> [    9.302331][  T228] ------------[ cut here ]------------
| [ 9.302761][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [    9.303262][  T228] Modules linked in: netdevsim
[    9.304052][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.304340][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.304620][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[    9.305359][  T228] RSP: 0018:ffffc90000b97520 EFLAGS: 00010246
[    9.305642][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.305964][  T228] RDX: 0000000000000000 RSI: ffff8880087dac98 RDI: ffff88800b4550f8
[    9.306300][  T228] RBP: ffffffffb1723440 R08: 0000000000000000 R09: fffffbfff5ebd83c
[    9.306636][  T228] R10: ffffffffaf5ec1e7 R11: ffff88800b4545c0 R12: 0000000000000000
[    9.306960][  T228] R13: ffff8880087da128 R14: ffff8880087da008 R15: ffff8880087da000
[    9.307334][  T228] FS:  00007fb60ac01740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.307707][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.307982][  T228] CR2: 0000555f54343b38 CR3: 00000000087e2001 CR4: 0000000000772ef0
[    9.308305][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.308647][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.308968][  T228] PKRU: 55555554
[    9.309141][  T228] Call Trace:
[    9.309312][  T228]  <TASK>
[ 9.309452][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.309678][ T228] ? __warn (kernel/panic.c:748) 
[ 9.309850][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.310073][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.310301][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.310485][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.310705][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.310942][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.311173][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.311460][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 9.311686][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.311909][ T228] register_netdevice (net/core/dev.c:11003) 
[ 9.312143][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.312383][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.312620][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.312895][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.313069][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.313365][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.313643][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.313919][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.314150][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.314438][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.314665][ T228] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 9.314833][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.315060][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.315286][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.315517][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 9.315740][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.315961][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.316224][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.316455][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.316669][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.316893][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.317119][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.317359][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 9.317578][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.317796][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.318015][ T228] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 9.318241][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 9.318472][ T228] device_add (drivers/base/core.c:3672) 
[ 9.318694][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.318913][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.319149][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.319437][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.319717][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.319936][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.320160][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.320389][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.320618][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.320798][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.321021][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.321237][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.321476][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.321702][ T228] ksys_write (fs/read_write.c:731) 
[ 9.321876][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.322092][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.322339][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.322566][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.322834][  T228] RIP: 0033:0x7fb60ad42b77
[ 9.323060][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[    9.323806][  T228] RSP: 002b:00007fff91dad6b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.324132][  T228] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007fb60ad42b77
[    9.324460][  T228] RDX: 0000000000000008 RSI: 0000555f54342b30 RDI: 0000000000000001
[    9.324779][  T228] RBP: 0000555f54342b30 R08: 0000000000000000 R09: 00007fb60adb54e0
[    9.325105][  T228] R10: 00007fb60adb53e0 R11: 0000000000000246 R12: 0000000000000008
[    9.325432][  T228] R13: 00007fb60adfe760 R14: 0000000000000008 R15: 00007fb60adf99c0
| [   14.507279][  T383] ------------[ cut here ]------------
| [ 14.507625][ T383] WARNING: CPU: 0 PID: 383 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) 
| [   14.508112][  T383] Modules linked in: netdevsim
| [   14.508746][  T383] Tainted: [W]=WARN
[   14.508922][  T383] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 14.509176][ T383] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 14.509457][ T383] 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
[   14.510162][  T383] RSP: 0018:ffffc90000937520 EFLAGS: 00010246
[   14.510432][  T383] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   14.510734][  T383] RDX: 0000000000000000 RSI: ffff88800b4bac98 RDI: ffff8880090a0b78
[   14.511037][  T383] RBP: ffffffffb1723440 R08: 0000000000000000 R09: fffffbfff5ebd83c
[   14.511348][  T383] R10: ffffffffaf5ec1e7 R11: ffff8880090a0040 R12: 0000000000000000
[   14.511651][  T383] R13: ffff88800b4ba128 R14: ffff88800b4ba008 R15: ffff88800b4ba000
[   14.511953][  T383] FS:  00007fb60ac01740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   14.512303][  T383] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   14.512572][  T383] CR2: 00007fb60adb5733 CR3: 0000000008ab4004 CR4: 0000000000772ef0
[   14.512880][  T383] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   14.513180][  T383] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   14.514016][  T383] PKRU: 55555554
[   14.514174][  T383] Call Trace:
[   14.514338][  T383]  <TASK>
[ 14.514447][ T383] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 14.514653][ T383] ? __warn (kernel/panic.c:748) 
[ 14.514810][ T383] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 14.515019][ T383] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 14.515232][ T383] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 14.515399][ T383] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 14.515603][ T383] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 14.515822][ T383] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 14.516034][ T383] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 14.516292][ T383] ? _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) 
[ 14.516517][ T383] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 14.516729][ T383] register_netdevice (net/core/dev.c:11003) 
[ 14.516939][ T383] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 14.517175][ T383] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 14.517413][ T383] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 14.517675][ T383] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 14.517835][ T383] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 14.518105][ T383] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 14.518376][ T383] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 14.518641][ T383] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 14.518858][ T383] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 14.519118][ T383] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 14.519335][ T383] ? 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)) 
[ 14.519490][ T383] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 14.519706][ T383] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 14.519916][ T383] __driver_probe_device (drivers/base/dd.c:800) 
[ 14.520122][ T383] driver_probe_device (drivers/base/dd.c:830) 
[ 14.520337][ T383] __device_attach_driver (drivers/base/dd.c:959) 
[ 14.520545][ T383] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 14.520797][ T383] bus_for_each_drv (drivers/base/bus.c:462) 
[ 14.521000][ T383] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 14.521201][ T383] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 14.521415][ T383] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 14.521619][ T383] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 14.521827][ T383] __device_attach (drivers/base/dd.c:1030) 
[ 14.522032][ T383] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 14.522233][ T383] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 14.522454][ T383] ? 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) 
[ 14.522672][ T383] bus_probe_device (drivers/base/bus.c:537) 
[ 14.522880][ T383] device_add (drivers/base/core.c:3672) 
[ 14.523087][ T383] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 14.523288][ T383] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 14.523515][ T383] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 14.523780][ T383] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 14.524046][ T383] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 14.524252][ T383] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 14.524501][ T383] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 14.524703][ T383] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 14.524913][ T383] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 14.525077][ T383] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 14.525284][ T383] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 14.525494][ T383] ? 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) 
[ 14.525708][ T383] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 14.525923][ T383] ksys_write (fs/read_write.c:731) 
[ 14.526081][ T383] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 14.526281][ T383] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 14.526506][ T383] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 14.526713][ T383] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   14.526962][  T383] RIP: 0033:0x7fb60ad42b77
[ 14.527179][ T383] 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
[   14.527894][  T383] RSP: 002b:00007fff91dad6b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   14.528201][  T383] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007fb60ad42b77
[   14.528511][  T383] RDX: 0000000000000008 RSI: 0000555f543448b0 RDI: 0000000000000001
[   14.528815][  T383] RBP: 0000555f543448b0 R08: 0000000000000000 R09: 00007fb60adb54e0
[   14.529113][  T383] R10: 00007fb60adb53e0 R11: 0000000000000246 R12: 0000000000000008


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