======================================
| 0
| xx__-> [    9.571811][  T228] ------------[ cut here ]------------
| [ 9.572243][ T228] WARNING: CPU: 0 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) 
| [    9.572843][  T228] Modules linked in: netdevsim
[    9.573878][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.574355][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.574750][ 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
[    9.575640][  T228] RSP: 0018:ffffc90000a97520 EFLAGS: 00010246
[    9.575995][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.576340][  T228] RDX: 0000000000000000 RSI: ffff8880096dac98 RDI: ffff88800a4b50f8
[    9.576844][  T228] RBP: ffffffffadb23440 R08: 0000000000000000 R09: fffffbfff573d83c
[    9.577292][  T228] R10: ffffffffab9ec1e7 R11: ffff88800a4b45c0 R12: 0000000000000000
[    9.577627][  T228] R13: ffff8880096da128 R14: ffff8880096da008 R15: ffff8880096da000
[    9.578080][  T228] FS:  00007f3b17fcb740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[    9.578577][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.579010][  T228] CR2: 0000564ad02f87a8 CR3: 0000000008a70004 CR4: 0000000000772ef0
[    9.579461][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.579981][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.580330][  T228] PKRU: 55555554
[    9.580506][  T228] Call Trace:
[    9.580752][  T228]  <TASK>
[ 9.580875][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.581141][ T228] ? __warn (kernel/panic.c:748) 
[ 9.581369][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.581661][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.582023][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.582263][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.582587][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.582963][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.583222][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.583536][ 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) 
[ 9.583845][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.584119][ T228] register_netdevice (net/core/dev.c:11003) 
[ 9.584401][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.584636][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.584993][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.585341][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.585569][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.586057][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.586482][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.586933][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.587347][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.587813][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.588207][ 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)) 
[ 9.588485][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.588861][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.589257][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.589643][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 9.590010][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.590335][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.590659][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.590953][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.591269][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.591598][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.591964][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.592254][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 9.592538][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.592787][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.593016][ 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) 
[ 9.593261][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 9.593559][ T228] device_add (drivers/base/core.c:3672) 
[ 9.593901][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.594181][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.594458][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.594853][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.595190][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.595497][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.595798][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.596022][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.596307][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.596514][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.596876][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.597172][ 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) 
[ 9.597525][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.597901][ T228] ksys_write (fs/read_write.c:731) 
[ 9.598201][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.598522][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.598903][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.599293][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.599748][  T228] RIP: 0033:0x7f3b1810cb77
[ 9.600141][ 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
[    9.601418][  T228] RSP: 002b:00007fffc23202e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.601972][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f3b1810cb77
[    9.602547][  T228] RDX: 0000000000000004 RSI: 0000564ad02f77a0 RDI: 0000000000000001
[    9.603097][  T228] RBP: 0000564ad02f77a0 R08: 0000000000000003 R09: 0000000000000000
[    9.603650][  T228] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000004
[    9.604212][  T228] R13: 00007f3b181c8760 R14: 0000000000000004 R15: 00007f3b181c39c0
| [    9.644244][  T228] ------------[ cut here ]------------
| [ 9.644809][ T228] WARNING: CPU: 0 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) 
| [    9.645647][  T228] Modules linked in: netdevsim
| [    9.646726][  T228] Tainted: [W]=WARN
[    9.647058][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.647508][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.647946][ 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
[    9.649156][  T228] RSP: 0018:ffffc90000a97520 EFLAGS: 00010246
[    9.649633][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.650175][  T228] RDX: 0000000000000000 RSI: ffff8880025b2c98 RDI: ffff88800a4b50f8
[    9.650710][  T228] RBP: ffffffffadb23440 R08: 0000000000000000 R09: fffffbfff573d83c
[    9.651256][  T228] R10: ffffffffab9ec1e7 R11: ffff88800a4b45c0 R12: 0000000000000000
[    9.651797][  T228] R13: ffff8880025b2128 R14: ffff8880025b2008 R15: ffff8880025b2000
[    9.652352][  T228] FS:  00007f3b17fcb740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[    9.652895][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.653362][  T228] CR2: 0000564ad02f87a8 CR3: 0000000008a70004 CR4: 0000000000772ef0
[    9.653901][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.654458][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.655001][  T228] PKRU: 55555554
[    9.655303][  T228] Call Trace:
[    9.655570][  T228]  <TASK>
[ 9.655747][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.656144][ T228] ? __warn (kernel/panic.c:748) 
[ 9.656421][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.656760][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.657013][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.657247][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.657508][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.657818][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.658057][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.658358][ 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) 
[ 9.658642][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.658885][ T228] register_netdevice (net/core/dev.c:11003) 
[ 9.659109][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.659351][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.659602][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.659975][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.660164][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.660519][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.660820][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.661109][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.661359][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.661656][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.661890][ 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)) 
[ 9.662058][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.662685][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.662936][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.663188][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 9.663462][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.663709][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.664033][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.664321][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.664625][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.664970][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.665336][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.665721][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 9.666093][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.666419][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.666711][ 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) 
[ 9.666980][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 9.667250][ T228] device_add (drivers/base/core.c:3672) 
[ 9.667514][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.667760][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.668069][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.668375][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.668712][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.668936][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.669250][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.669516][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.669925][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.670109][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.670356][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 9.670594][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.670826][ T228] ksys_write (fs/read_write.c:731) 
[ 9.671000][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.671244][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.671475][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.671756][  T228] RIP: 0033:0x7f3b1810cb77
[ 9.671993][ T228] Code: Unable to access opcode bytes at 0x7f3b1810cb4d.

Code starting with the faulting instruction
===========================================
[    9.672285][  T228] RSP: 002b:00007fffc23202e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.672620][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f3b1810cb77
[    9.672946][  T228] RDX: 0000000000000004 RSI: 0000564ad02f77a0 RDI: 0000000000000001
[    9.673289][  T228] RBP: 0000564ad02f77a0 R08: 0000000000000000 R09: 00007f3b1817f4e0
[    9.673613][  T228] R10: 00007f3b1817f3e0 R11: 0000000000000246 R12: 0000000000000004


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