======================================
| 0
| xx__-> [    9.609265][  T226] ------------[ cut here ]------------
| [ 9.609804][ T226] WARNING: CPU: 2 PID: 226 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) 
| [    9.610301][  T226] Modules linked in: netdevsim
[    9.611144][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.611443][ T226] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.611747][ T226] 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
[    9.612555][  T226] RSP: 0018:ffffc90000ac7520 EFLAGS: 00010246
[    9.612852][  T226] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.613216][  T226] RDX: 0000000000000000 RSI: ffff88800aa6ac98 RDI: ffff88800a11ae38
[    9.613562][  T226] RBP: ffffffffaa123440 R08: 0000000000000000 R09: fffffbfff4ffd83c
[    9.613907][  T226] R10: ffffffffa7fec1e7 R11: ffff88800a11a300 R12: 0000000000000000
[    9.614281][  T226] R13: ffff88800aa6a128 R14: ffff88800aa6a008 R15: ffff88800aa6a000
[    9.614635][  T226] FS:  00007efc26693740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.615064][  T226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.615376][  T226] CR2: 0000559649106098 CR3: 00000000092ee001 CR4: 0000000000772ef0
[    9.615754][  T226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.616101][  T226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.616457][  T226] PKRU: 55555554
[    9.616643][  T226] Call Trace:
[    9.616826][  T226]  <TASK>
[ 9.616960][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.617212][ T226] ? __warn (kernel/panic.c:748) 
[ 9.617398][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.617634][ T226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.617877][ T226] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.618075][ T226] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.618337][ T226] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.618588][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.618829][ T226] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.619174][ T226] ? _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) 
[ 9.619413][ T226] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.619656][ T226] register_netdevice (net/core/dev.c:11003) 
[ 9.619900][ T226] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.620156][ T226] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.620416][ T226] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.620721][ T226] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.620906][ T226] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.621220][ T226] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.621522][ T226] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.621818][ T226] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.622061][ T226] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.622374][ T226] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.622613][ T226] ? 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)) 
[ 9.622796][ T226] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.623069][ T226] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.623327][ T226] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.623571][ T226] driver_probe_device (drivers/base/dd.c:830) 
[ 9.623806][ T226] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.624057][ T226] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.624499][ T226] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.624858][ T226] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.625225][ T226] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.625590][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.625889][ T226] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.626140][ T226] __device_attach (drivers/base/dd.c:1030) 
[ 9.626378][ T226] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.626606][ T226] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.626847][ T226] ? 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) 
[ 9.627120][ T226] bus_probe_device (drivers/base/bus.c:537) 
[ 9.627408][ T226] device_add (drivers/base/core.c:3672) 
[ 9.627806][ T226] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.628105][ T226] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.628372][ T226] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.628673][ T226] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.629182][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.629550][ T226] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.629925][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.630315][ T226] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.630678][ T226] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.630975][ T226] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.631374][ T226] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.631745][ T226] ? 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) 
[ 9.632147][ T226] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.632537][ T226] ksys_write (fs/read_write.c:731) 
[ 9.632831][ T226] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.633218][ T226] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.633613][ T226] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.633986][ T226] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.634451][  T226] RIP: 0033:0x7efc267d4b77
[ 9.634835][ T226] 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
[    9.636089][  T226] RSP: 002b:00007ffc122a9f08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.636652][  T226] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007efc267d4b77
[    9.637073][  T226] RDX: 0000000000000004 RSI: 0000564bdfdd07a0 RDI: 0000000000000001
[    9.637418][  T226] RBP: 0000564bdfdd07a0 R08: 0000000000000003 R09: 0000000000000000
[    9.637745][  T226] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000004
[    9.638095][  T226] R13: 00007efc26890760 R14: 0000000000000004 R15: 00007efc2688b9c0
| [    9.668729][  T226] ------------[ cut here ]------------
| [ 9.669182][ T226] WARNING: CPU: 2 PID: 226 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) 
| [    9.669615][  T226] Modules linked in: netdevsim
| [    9.670280][  T226] Tainted: [W]=WARN
[    9.670467][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.670739][ T226] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.671015][ T226] 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
[    9.671756][  T226] RSP: 0018:ffffc90000ac7520 EFLAGS: 00010246
[    9.672070][  T226] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.672406][  T226] RDX: 0000000000000000 RSI: ffff888004ee2c98 RDI: ffff88800a11ae38
[    9.672725][  T226] RBP: ffffffffaa123440 R08: 0000000000000000 R09: fffffbfff4ffd83c
[    9.673052][  T226] R10: ffffffffa7fec1e7 R11: ffff88800a11a300 R12: 0000000000000000
[    9.673388][  T226] R13: ffff888004ee2128 R14: ffff888004ee2008 R15: ffff888004ee2000
[    9.673712][  T226] FS:  00007efc26693740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.674084][  T226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.674375][  T226] CR2: 0000559649106098 CR3: 00000000092ee001 CR4: 0000000000772ef0
[    9.674698][  T226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.675033][  T226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.675369][  T226] PKRU: 55555554
[    9.675540][  T226] Call Trace:
[    9.675707][  T226]  <TASK>
[ 9.675831][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.676095][ T226] ? __warn (kernel/panic.c:748) 
[ 9.676280][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.676508][ T226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.676735][ T226] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.676908][ T226] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.677126][ T226] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.677373][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.677609][ T226] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.677888][ T226] ? _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) 
[ 9.678140][ T226] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.678375][ T226] register_netdevice (net/core/dev.c:11003) 
[ 9.678603][ T226] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.678836][ T226] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.679120][ T226] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.679426][ T226] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.679603][ T226] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.679902][ T226] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.680236][ T226] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.680531][ T226] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.680774][ T226] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.681054][ T226] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.681296][ T226] ? 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)) 
[ 9.681472][ T226] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.681713][ T226] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.681946][ T226] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.682180][ T226] driver_probe_device (drivers/base/dd.c:830) 
[ 9.682406][ T226] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.682636][ T226] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.682910][ T226] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.683151][ T226] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.683373][ T226] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.683600][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.683826][ T226] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.684107][ T226] __device_attach (drivers/base/dd.c:1030) 
[ 9.684349][ T226] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.684570][ T226] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.684796][ T226] ? 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) 
[ 9.685028][ T226] bus_probe_device (drivers/base/bus.c:537) 
[ 9.685270][ T226] device_add (drivers/base/core.c:3672) 
[ 9.685504][ T226] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.685730][ T226] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.685961][ T226] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.686262][ T226] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.686547][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.686767][ T226] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.686992][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.687225][ T226] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.687453][ T226] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.687638][ T226] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.687863][ T226] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 9.688157][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.688390][ T226] ksys_write (fs/read_write.c:731) 
[ 9.688566][ T226] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.688805][ T226] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.689034][ T226] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.689321][  T226] RIP: 0033:0x7efc267d4b77
[ 9.689558][ T226] Code: Unable to access opcode bytes at 0x7efc267d4b4d.

Code starting with the faulting instruction
===========================================
[    9.689850][  T226] RSP: 002b:00007ffc122a9f08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.690195][  T226] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007efc267d4b77
[    9.690522][  T226] RDX: 0000000000000004 RSI: 0000564bdfdd07a0 RDI: 0000000000000001
[    9.690842][  T226] RBP: 0000564bdfdd07a0 R08: 0000000000000000 R09: 00007efc268474e0
[    9.691172][  T226] R10: 00007efc268473e0 R11: 0000000000000246 R12: 0000000000000004


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