======================================
| 0
| xx__-> [    9.806426][  T245] ------------[ cut here ]------------
| [ 9.806890][ T245] WARNING: CPU: 2 PID: 245 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) 
| [    9.807502][  T245] Modules linked in: netdevsim
[    9.808107][  T245] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.808402][ T245] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.808722][ T245] 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
[    9.809507][  T245] RSP: 0018:ffffc90000737520 EFLAGS: 00010246
[    9.809803][  T245] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.810167][  T245] RDX: 0000000000000000 RSI: ffff88800d44ac98 RDI: ffff8880059d0b78
[    9.810504][  T245] RBP: ffff88800a9b0040 R08: 0000000000000000 R09: fffffbfff31fd83c
[    9.810849][  T245] R10: ffffffff98fec1e7 R11: ffff8880059d0040 R12: 0000000000000000
[    9.811204][  T245] R13: ffff88800d44a128 R14: ffff88800d44a008 R15: ffff88800d44a000
[    9.811547][  T245] FS:  00007f3a82655740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.811943][  T245] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.812245][  T245] CR2: 0000561c14ee42f8 CR3: 00000000029d0002 CR4: 0000000000772ef0
[    9.812587][  T245] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.812930][  T245] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.813290][  T245] PKRU: 55555554
[    9.813475][  T245] Call Trace:
[    9.813661][  T245]  <TASK>
[ 9.813796][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.814047][ T245] ? __warn (kernel/panic.c:748) 
[ 9.814232][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.814470][ T245] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.814711][ T245] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.814892][ T245] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.815135][ T245] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.815384][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.815625][ T245] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.815913][ T245] ? _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) 
[ 9.816167][ T245] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.816408][ T245] register_netdevice (net/core/dev.c:11003) 
[ 9.816651][ T245] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.816895][ T245] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.817168][ T245] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.817462][ T245] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.817646][ T245] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.817946][ T245] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.818252][ T245] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.818548][ T245] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.818795][ T245] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.819098][ T245] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.819340][ T245] ? 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)) 
[ 9.819518][ T245] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.819760][ T245] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.819999][ T245] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.820249][ T245] driver_probe_device (drivers/base/dd.c:830) 
[ 9.820481][ T245] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.820714][ T245] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.820995][ T245] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.821241][ T245] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.821474][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.821704][ T245] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.821937][ T245] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.822189][ T245] __device_attach (drivers/base/dd.c:1030) 
[ 9.822422][ T245] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.822652][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.822884][ T245] ? 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) 
[ 9.823144][ T245] bus_probe_device (drivers/base/bus.c:537) 
[ 9.823388][ T245] device_add (drivers/base/core.c:3672) 
[ 9.823623][ T245] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.823851][ T245] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.824109][ T245] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.824416][ T245] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.824721][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.824953][ T245] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.825203][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.825435][ T245] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.825673][ T245] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.825861][ T245] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.826109][ T245] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.826346][ T245] ? 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) 
[ 9.826588][ T245] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.826826][ T245] ksys_write (fs/read_write.c:731) 
[ 9.827017][ T245] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.827260][ T245] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.827502][ T245] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.827735][ T245] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.828039][  T245] RIP: 0033:0x7f3a82796b77
[ 9.828285][ T245] 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
[    9.829056][  T245] RSP: 002b:00007ffdc851bc58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.829398][  T245] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f3a82796b77
[    9.829743][  T245] RDX: 0000000000000005 RSI: 0000561c14ee32f0 RDI: 0000000000000001
[    9.830092][  T245] RBP: 0000561c14ee32f0 R08: 0000000000000004 R09: 0000000000000077
[    9.830434][  T245] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.830772][  T245] R13: 00007f3a82852760 R14: 0000000000000005 R15: 00007f3a8284d9c0
| [    9.846233][  T245] ------------[ cut here ]------------
| [ 9.846520][ T245] WARNING: CPU: 2 PID: 245 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) 
| [    9.846988][  T245] Modules linked in: netdevsim
| [    9.847641][  T245] Tainted: [W]=WARN
[    9.847827][  T245] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.848129][ T245] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.848420][ T245] 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
[    9.849203][  T245] RSP: 0018:ffffc90000737520 EFLAGS: 00010246
[    9.849492][  T245] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.849833][  T245] RDX: 0000000000000000 RSI: ffff888004a12c98 RDI: ffff8880059d0b78
[    9.850188][  T245] RBP: ffff88800a9b0040 R08: 0000000000000000 R09: fffffbfff31fd83c
[    9.850526][  T245] R10: ffffffff98fec1e7 R11: ffff8880059d0040 R12: 0000000000000000
[    9.850860][  T245] R13: ffff888004a12128 R14: ffff888004a12008 R15: ffff888004a12000
[    9.851207][  T245] FS:  00007f3a82655740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.851594][  T245] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.851879][  T245] CR2: 0000561c14ee42f8 CR3: 00000000029d0002 CR4: 0000000000772ef0
[    9.852228][  T245] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.852562][  T245] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.852901][  T245] PKRU: 55555554
[    9.853092][  T245] Call Trace:
[    9.853272][  T245]  <TASK>
[ 9.853399][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.853630][ T245] ? __warn (kernel/panic.c:748) 
[ 9.853813][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.854057][ T245] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.854297][ T245] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.854475][ T245] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.854713][ T245] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.854958][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.855217][ T245] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.855507][ T245] ? _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) 
[ 9.855747][ T245] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.855981][ T245] register_netdevice (net/core/dev.c:11003) 
[ 9.856234][ T245] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.856483][ T245] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.856732][ T245] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.857050][ T245] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.857237][ T245] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.857538][ T245] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.857827][ T245] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.858140][ T245] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.858384][ T245] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.858670][ T245] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.858908][ T245] ? 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)) 
[ 9.859110][ T245] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.859349][ T245] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.859586][ T245] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.859824][ T245] driver_probe_device (drivers/base/dd.c:830) 
[ 9.860072][ T245] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.860305][ T245] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.860588][ T245] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.860819][ T245] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.861062][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.861304][ T245] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.861543][ T245] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.861777][ T245] __device_attach (drivers/base/dd.c:1030) 
[ 9.862010][ T245] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.862254][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.862491][ T245] ? 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) 
[ 9.862730][ T245] bus_probe_device (drivers/base/bus.c:537) 
[ 9.862964][ T245] device_add (drivers/base/core.c:3672) 
[ 9.863217][ T245] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.863449][ T245] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.863693][ T245] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.863984][ T245] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.864302][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.864533][ T245] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.864772][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.865010][ T245] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.865261][ T245] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.865448][ T245] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.865686][ T245] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.865914][ T245] ? 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) 
[ 9.866168][ T245] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.866407][ T245] ksys_write (fs/read_write.c:731) 
[ 9.866591][ T245] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.866820][ T245] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.867117][ T245] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.867354][ T245] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.867636][  T245] RIP: 0033:0x7f3a82796b77
[ 9.867873][ T245] 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
[    9.868658][  T245] RSP: 002b:00007ffdc851bc58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.869094][  T245] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f3a82796b77
[    9.869530][  T245] RDX: 0000000000000005 RSI: 0000561c14ee32f0 RDI: 0000000000000001
[    9.869968][  T245] RBP: 0000561c14ee32f0 R08: 0000000000000004 R09: 0000000000000077
[    9.870320][  T245] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.870655][  T245] R13: 00007f3a82852760 R14: 0000000000000005 R15: 00007f3a8284d9c0
| [    9.885297][  T245] ------------[ cut here ]------------
| [ 9.885565][ T245] WARNING: CPU: 2 PID: 245 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) 
| [    9.886009][  T245] Modules linked in: netdevsim
| [    9.886663][  T245] Tainted: [W]=WARN
[    9.886841][  T245] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.887148][ T245] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.887440][ T245] 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
[    9.888247][  T245] RSP: 0018:ffffc90000737520 EFLAGS: 00010246
[    9.888539][  T245] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.888872][  T245] RDX: 0000000000000000 RSI: ffff88800901ac98 RDI: ffff8880059d0b78
[    9.889224][  T245] RBP: ffff88800a9b0040 R08: 0000000000000000 R09: fffffbfff31fd83c
[    9.889561][  T245] R10: ffffffff98fec1e7 R11: ffff8880059d0040 R12: 0000000000000000
[    9.889902][  T245] R13: ffff88800901a128 R14: ffff88800901a008 R15: ffff88800901a000
[    9.890251][  T245] FS:  00007f3a82655740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.890640][  T245] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.890924][  T245] CR2: 0000561c14ee42f8 CR3: 00000000029d0002 CR4: 0000000000772ef0
[    9.891277][  T245] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.891611][  T245] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.891946][  T245] PKRU: 55555554
[    9.892148][  T245] Call Trace:
[    9.892327][  T245]  <TASK>
[ 9.892453][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.892688][ T245] ? __warn (kernel/panic.c:748) 
[ 9.892872][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.893119][ T245] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.893358][ T245] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.893537][ T245] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.893771][ T245] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.894018][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.894273][ T245] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.894568][ T245] ? _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) 
[ 9.894809][ T245] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.895057][ T245] register_netdevice (net/core/dev.c:11003) 
[ 9.895297][ T245] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.895539][ T245] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.895791][ T245] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.896113][ T245] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.896302][ T245] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.896600][ T245] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.896895][ T245] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.897208][ T245] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.897456][ T245] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.897752][ T245] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.897987][ T245] ? 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)) 
[ 9.898175][ T245] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.898418][ T245] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.898653][ T245] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.898886][ T245] driver_probe_device (drivers/base/dd.c:830) 
[ 9.899566][ T245] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.899832][ T245] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.900149][ T245] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.900392][ T245] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.900621][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.900855][ T245] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.901108][ T245] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.901349][ T245] __device_attach (drivers/base/dd.c:1030) 
[ 9.901585][ T245] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.901818][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.902067][ T245] ? 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) 
[ 9.902311][ T245] bus_probe_device (drivers/base/bus.c:537) 
[ 9.902548][ T245] device_add (drivers/base/core.c:3672) 
[ 9.902784][ T245] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.903015][ T245] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.903276][ T245] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.903580][ T245] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.903880][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.904207][ T245] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.904453][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.904685][ T245] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.904923][ T245] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.905140][ T245] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.905377][ T245] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.905606][ T245] ? 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) 
[ 9.905845][ T245] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.906102][ T245] ksys_write (fs/read_write.c:731) 
[ 9.906282][ T245] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.906512][ T245] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.906750][ T245] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.906995][ T245] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.907290][  T245] RIP: 0033:0x7f3a82796b77
[ 9.907528][ T245] 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
[    9.908325][  T245] RSP: 002b:00007ffdc851bc58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.908667][  T245] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f3a82796b77
[    9.909004][  T245] RDX: 0000000000000005 RSI: 0000561c14ee32f0 RDI: 0000000000000001
[    9.909352][  T245] RBP: 0000561c14ee32f0 R08: 0000000000000004 R09: 0000000000000077
[    9.909683][  T245] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.910058][  T245] R13: 00007f3a82852760 R14: 0000000000000005 R15: 00007f3a8284d9c0
| [    9.932978][  T245] ------------[ cut here ]------------
| [ 9.933336][ T245] WARNING: CPU: 2 PID: 245 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) 
| [    9.933789][  T245] Modules linked in: netdevsim
| [    9.934502][  T245] Tainted: [W]=WARN
[    9.934686][  T245] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.934967][ T245] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.935312][ T245] 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
[    9.936086][  T245] RSP: 0018:ffffc90000737520 EFLAGS: 00010246
[    9.936375][  T245] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.936705][  T245] RDX: 0000000000000000 RSI: ffff888008beac98 RDI: ffff8880059d0b78
[    9.937061][  T245] RBP: ffff88800a9b0040 R08: 0000000000000000 R09: fffffbfff31fd83c
[    9.937394][  T245] R10: ffffffff98fec1e7 R11: ffff8880059d0040 R12: 0000000000000000
[    9.937727][  T245] R13: ffff888008bea128 R14: ffff888008bea008 R15: ffff888008bea000
[    9.938085][  T245] FS:  00007f3a82655740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.938468][  T245] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.938758][  T245] CR2: 0000561c14ee42f8 CR3: 00000000029d0002 CR4: 0000000000772ef0
[    9.939108][  T245] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.939441][  T245] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.939775][  T245] PKRU: 55555554
[    9.939950][  T245] Call Trace:
[    9.940164][  T245]  <TASK>
[ 9.940303][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.940535][ T245] ? __warn (kernel/panic.c:748) 
[ 9.940720][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.940952][ T245] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.941205][ T245] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.941391][ T245] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.941623][ T245] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.941865][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.942126][ T245] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.942414][ T245] ? _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) 
[ 9.942654][ T245] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.942890][ T245] register_netdevice (net/core/dev.c:11003) 
[ 9.943163][ T245] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.943406][ T245] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.943661][ T245] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.943950][ T245] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.944143][ T245] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.944441][ T245] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.944731][ T245] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.945035][ T245] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.945283][ T245] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.945571][ T245] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.945806][ T245] ? 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)) 
[ 9.945985][ T245] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.946246][ T245] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.946488][ T245] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.946721][ T245] driver_probe_device (drivers/base/dd.c:830) 
[ 9.946967][ T245] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.947217][ T245] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.947500][ T245] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.947732][ T245] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.947961][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.948228][ T245] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.948458][ T245] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.948698][ T245] __device_attach (drivers/base/dd.c:1030) 
[ 9.948933][ T245] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.949176][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.949418][ T245] ? 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) 
[ 9.949656][ T245] bus_probe_device (drivers/base/bus.c:537) 
[ 9.949891][ T245] device_add (drivers/base/core.c:3672) 
[ 9.950140][ T245] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.950370][ T245] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.950613][ T245] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.950912][ T245] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.951244][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.951478][ T245] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.951715][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.951945][ T245] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.952202][ T245] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.952392][ T245] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.952629][ T245] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.952856][ T245] ? 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) 
[ 9.953107][ T245] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.953342][ T245] ksys_write (fs/read_write.c:731) 
[ 9.953525][ T245] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.953752][ T245] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.953999][ T245] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.954257][ T245] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.954538][  T245] RIP: 0033:0x7f3a82796b77
[ 9.954773][ T245] 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
[    9.955550][  T245] RSP: 002b:00007ffdc851bc58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.955892][  T245] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f3a82796b77
[    9.956261][  T245] RDX: 0000000000000005 RSI: 0000561c14ee32f0 RDI: 0000000000000001
[    9.956595][  T245] RBP: 0000561c14ee32f0 R08: 0000000000000004 R09: 0000000000000077
[    9.956933][  T245] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005


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