======================================
| 0
| xx__-> [    9.697326][  T242] ------------[ cut here ]------------
| [ 9.697726][ T242] WARNING: CPU: 2 PID: 242 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) 
| [    9.698293][  T242] Modules linked in: netdevsim
[    9.698858][  T242] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.699153][ T242] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.699434][ T242] 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
[    9.700217][  T242] RSP: 0018:ffffc90000b47520 EFLAGS: 00010246
[    9.700497][  T242] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.700822][  T242] RDX: 0000000000000000 RSI: ffff88800a32ac98 RDI: ffff88800a270b78
[    9.701163][  T242] RBP: ffff888005448040 R08: 0000000000000000 R09: fffffbfff43bd83c
[    9.701487][  T242] R10: ffffffffa1dec1e7 R11: ffff88800a270040 R12: 0000000000000000
[    9.701884][  T242] R13: ffff88800a32a128 R14: ffff88800a32a008 R15: ffff88800a32a000
[    9.702217][  T242] FS:  00007f83c1c8a740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.702596][  T242] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.702876][  T242] CR2: 0000560fa36b62f8 CR3: 000000000b62e002 CR4: 0000000000772ef0
[    9.703232][  T242] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.703559][  T242] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.703883][  T242] PKRU: 55555554
[    9.704073][  T242] Call Trace:
[    9.704248][  T242]  <TASK>
[ 9.704376][ T242] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.704604][ T242] ? __warn (kernel/panic.c:748) 
[ 9.704777][ T242] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.705013][ T242] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.705243][ T242] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.705418][ T242] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.705635][ T242] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.705912][ T242] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.706149][ T242] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.706428][ T242] ? _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) 
[ 9.706656][ T242] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.706885][ T242] register_netdevice (net/core/dev.c:11003) 
[ 9.707165][ T242] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.707397][ T242] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.707632][ T242] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.707924][ T242] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.708098][ T242] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.708383][ T242] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.708659][ T242] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.708949][ T242] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.709182][ T242] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.709458][ T242] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.709685][ T242] ? 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)) 
[ 9.709857][ T242] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.710096][ T242] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.710327][ T242] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.710548][ T242] driver_probe_device (drivers/base/dd.c:830) 
[ 9.710765][ T242] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.711018][ T242] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.711292][ T242] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.711512][ T242] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.711728][ T242] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.711969][ T242] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.712189][ T242] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.712419][ T242] __device_attach (drivers/base/dd.c:1030) 
[ 9.712639][ T242] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.712858][ T242] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.713090][ T242] ? 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) 
[ 9.713324][ T242] bus_probe_device (drivers/base/bus.c:537) 
[ 9.713545][ T242] device_add (drivers/base/core.c:3672) 
[ 9.713771][ T242] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.713999][ T242] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.714233][ T242] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.714512][ T242] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.714795][ T242] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.715042][ T242] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.715274][ T242] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.715489][ T242] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.715715][ T242] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.715905][ T242] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.716129][ T242] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.716345][ T242] ? 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) 
[ 9.716577][ T242] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.716805][ T242] ksys_write (fs/read_write.c:731) 
[ 9.716994][ T242] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.717213][ T242] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.717442][ T242] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.717664][ T242] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.717939][  T242] RIP: 0033:0x7f83c1dcbb77
[ 9.718172][ T242] 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
[    9.718922][  T242] RSP: 002b:00007ffc40d72ea8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.719252][  T242] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f83c1dcbb77
[    9.719581][  T242] RDX: 0000000000000005 RSI: 0000560fa36b52f0 RDI: 0000000000000001
[    9.719915][  T242] RBP: 0000560fa36b52f0 R08: 0000000000000004 R09: 0000000000000077
[    9.720236][  T242] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.720555][  T242] R13: 00007f83c1e87760 R14: 0000000000000005 R15: 00007f83c1e829c0
| [    9.742138][  T242] ------------[ cut here ]------------
| [ 9.742470][ T242] WARNING: CPU: 2 PID: 242 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) 
| [    9.742888][  T242] Modules linked in: netdevsim
| [    9.743507][  T242] Tainted: [W]=WARN
[    9.743687][  T242] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.743966][ T242] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.744240][ T242] 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
[    9.744966][  T242] RSP: 0018:ffffc90000b47520 EFLAGS: 00010246
[    9.745236][  T242] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.745551][  T242] RDX: 0000000000000000 RSI: ffff888008d3ac98 RDI: ffff88800a270b78
[    9.745862][  T242] RBP: ffff888005448040 R08: 0000000000000000 R09: fffffbfff43bd83c
[    9.746187][  T242] R10: ffffffffa1dec1e7 R11: ffff88800a270040 R12: 0000000000000000
[    9.746507][  T242] R13: ffff888008d3a128 R14: ffff888008d3a008 R15: ffff888008d3a000
[    9.746819][  T242] FS:  00007f83c1c8a740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.747205][  T242] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.747473][  T242] CR2: 0000560fa36b62f8 CR3: 000000000b62e002 CR4: 0000000000772ef0
[    9.747792][  T242] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.748121][  T242] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.748434][  T242] PKRU: 55555554
[    9.748603][  T242] Call Trace:
[    9.748768][  T242]  <TASK>
[ 9.748888][ T242] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.749120][ T242] ? __warn (kernel/panic.c:748) 
[ 9.749296][ T242] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.749515][ T242] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.749741][ T242] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.749924][ T242] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.750140][ T242] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.750373][ T242] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.750598][ T242] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.750876][ T242] ? _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) 
[ 9.751113][ T242] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.751338][ T242] register_netdevice (net/core/dev.c:11003) 
[ 9.751559][ T242] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.751788][ T242] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.752046][ T242] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.752321][ T242] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.752496][ T242] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.752774][ T242] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.753061][ T242] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.753337][ T242] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.753568][ T242] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.753838][ T242] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.754079][ T242] ? 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)) 
[ 9.754247][ T242] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.754474][ T242] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.754697][ T242] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.754932][ T242] driver_probe_device (drivers/base/dd.c:830) 
[ 9.755149][ T242] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.755371][ T242] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.755638][ T242] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.755857][ T242] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.756085][ T242] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.756304][ T242] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.756519][ T242] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.756743][ T242] __device_attach (drivers/base/dd.c:1030) 
[ 9.756980][ T242] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.757205][ T242] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.757421][ T242] ? 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) 
[ 9.757646][ T242] bus_probe_device (drivers/base/bus.c:537) 
[ 9.757867][ T242] device_add (drivers/base/core.c:3672) 
[ 9.758104][ T242] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.758321][ T242] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.758548][ T242] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.758832][ T242] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.759126][ T242] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.759344][ T242] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.759566][ T242] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.759783][ T242] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.760018][ T242] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.760201][ T242] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.760426][ T242] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.760642][ T242] ? 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) 
[ 9.760867][ T242] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.761108][ T242] ksys_write (fs/read_write.c:731) 
[ 9.761279][ T242] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.761494][ T242] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.761723][ T242] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.761967][ T242] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.762237][  T242] RIP: 0033:0x7f83c1dcbb77
[ 9.762458][ T242] 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
[    9.763182][  T242] RSP: 002b:00007ffc40d72ea8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.763507][  T242] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f83c1dcbb77
[    9.763818][  T242] RDX: 0000000000000005 RSI: 0000560fa36b52f0 RDI: 0000000000000001
[    9.764143][  T242] RBP: 0000560fa36b52f0 R08: 0000000000000004 R09: 0000000000000077
[    9.764457][  T242] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.764777][  T242] R13: 00007f83c1e87760 R14: 0000000000000005 R15: 00007f83c1e829c0
| [    9.778383][  T242] ------------[ cut here ]------------
| [ 9.778636][ T242] WARNING: CPU: 3 PID: 242 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) 
| [    9.779107][  T242] Modules linked in: netdevsim
| [    9.779718][  T242] Tainted: [W]=WARN
[    9.779884][  T242] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.780169][ T242] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.780451][ T242] 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
[    9.781220][  T242] RSP: 0018:ffffc90000b47520 EFLAGS: 00010246
[    9.781494][  T242] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.781820][  T242] RDX: 0000000000000000 RSI: ffff888009242c98 RDI: ffff88800a270b78
[    9.782160][  T242] RBP: ffff888005448040 R08: 0000000000000000 R09: fffffbfff43bd83c
[    9.782483][  T242] R10: ffffffffa1dec1e7 R11: ffff88800a270040 R12: 0000000000000000
[    9.782810][  T242] R13: ffff888009242128 R14: ffff888009242008 R15: ffff888009242000
[    9.783161][  T242] FS:  00007f83c1c8a740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[    9.783541][  T242] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.783813][  T242] CR2: 000055809bd6aa00 CR3: 000000000b62e004 CR4: 0000000000772ef0
[    9.784151][  T242] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.784474][  T242] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.784801][  T242] PKRU: 55555554
[    9.784977][  T242] Call Trace:
[    9.785143][  T242]  <TASK>
[ 9.785257][ T242] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.785475][ T242] ? __warn (kernel/panic.c:748) 
[ 9.785645][ T242] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.785869][ T242] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.786112][ T242] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.786293][ T242] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.786534][ T242] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.786773][ T242] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.787055][ T242] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.787342][ T242] ? _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) 
[ 9.787572][ T242] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.787797][ T242] register_netdevice (net/core/dev.c:11003) 
[ 9.788037][ T242] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.788270][ T242] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.788510][ T242] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.788789][ T242] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.788974][ T242] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.789263][ T242] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.789573][ T242] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.789851][ T242] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.790093][ T242] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.790369][ T242] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.790595][ T242] ? 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)) 
[ 9.790762][ T242] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.791003][ T242] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.791234][ T242] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.791455][ T242] driver_probe_device (drivers/base/dd.c:830) 
[ 9.791675][ T242] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.791905][ T242] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.792175][ T242] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.792398][ T242] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.792617][ T242] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.792836][ T242] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.793064][ T242] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.793291][ T242] __device_attach (drivers/base/dd.c:1030) 
[ 9.793508][ T242] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.793725][ T242] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.793958][ T242] ? 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) 
[ 9.794194][ T242] bus_probe_device (drivers/base/bus.c:537) 
[ 9.794417][ T242] device_add (drivers/base/core.c:3672) 
[ 9.794639][ T242] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.794856][ T242] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.795098][ T242] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.795378][ T242] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.795683][ T242] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.795917][ T242] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.796145][ T242] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.796365][ T242] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.796592][ T242] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.796770][ T242] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.797012][ T242] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.797229][ T242] ? 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) 
[ 9.797460][ T242] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.797694][ T242] ksys_write (fs/read_write.c:731) 
[ 9.797862][ T242] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.798091][ T242] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.798319][ T242] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.798538][ T242] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.798809][  T242] RIP: 0033:0x7f83c1dcbb77
[ 9.799043][ T242] 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
[    9.799800][  T242] RSP: 002b:00007ffc40d72ea8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.800145][  T242] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f83c1dcbb77
[    9.800471][  T242] RDX: 0000000000000005 RSI: 0000560fa36b52f0 RDI: 0000000000000001
[    9.800798][  T242] RBP: 0000560fa36b52f0 R08: 0000000000000004 R09: 0000000000000077
[    9.801133][  T242] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.801459][  T242] R13: 00007f83c1e87760 R14: 0000000000000005 R15: 00007f83c1e829c0
| [    9.815157][  T242] ------------[ cut here ]------------
| [ 9.815393][ T242] WARNING: CPU: 3 PID: 242 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) 
| [    9.815822][  T242] Modules linked in: netdevsim
| [    9.816442][  T242] Tainted: [W]=WARN
[    9.816607][  T242] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.816876][ T242] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.817292][ T242] 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
[    9.818055][  T242] RSP: 0018:ffffc90000b47520 EFLAGS: 00010246
[    9.818326][  T242] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.818645][  T242] RDX: 0000000000000000 RSI: ffff888004c92c98 RDI: ffff88800a270b78
[    9.818978][  T242] RBP: ffff888005448040 R08: 0000000000000000 R09: fffffbfff43bd83c
[    9.819300][  T242] R10: ffffffffa1dec1e7 R11: ffff88800a270040 R12: 0000000000000000
[    9.819621][  T242] R13: ffff888004c92128 R14: ffff888004c92008 R15: ffff888004c92000
[    9.819952][  T242] FS:  00007f83c1c8a740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[    9.820325][  T242] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.820603][  T242] CR2: 000055809bd6aa00 CR3: 000000000b62e004 CR4: 0000000000772ef0
[    9.820935][  T242] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.821258][  T242] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.821577][  T242] PKRU: 55555554
[    9.821743][  T242] Call Trace:
[    9.821919][  T242]  <TASK>
[ 9.822035][ T242] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.822254][ T242] ? __warn (kernel/panic.c:748) 
[ 9.822423][ T242] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.822644][ T242] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.822870][ T242] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.823059][ T242] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.823276][ T242] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.823506][ T242] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.823737][ T242] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.824021][ T242] ? _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) 
[ 9.824244][ T242] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.824470][ T242] register_netdevice (net/core/dev.c:11003) 
[ 9.824693][ T242] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.824931][ T242] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.825172][ T242] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.825447][ T242] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.825613][ T242] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.825905][ T242] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.826190][ T242] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.826468][ T242] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.826700][ T242] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.827006][ T242] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.827228][ T242] ? 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)) 
[ 9.827392][ T242] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.827622][ T242] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.827843][ T242] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.828084][ T242] driver_probe_device (drivers/base/dd.c:830) 
[ 9.828306][ T242] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.828525][ T242] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.828790][ T242] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.829025][ T242] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.829240][ T242] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.829457][ T242] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.829672][ T242] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.829908][ T242] __device_attach (drivers/base/dd.c:1030) 
[ 9.830124][ T242] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.830341][ T242] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.830558][ T242] ? 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) 
[ 9.830785][ T242] bus_probe_device (drivers/base/bus.c:537) 
[ 9.831016][ T242] device_add (drivers/base/core.c:3672) 
[ 9.831237][ T242] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.831453][ T242] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.831686][ T242] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.831980][ T242] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.832261][ T242] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.832477][ T242] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.832699][ T242] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.832923][ T242] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.833152][ T242] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.833326][ T242] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.833546][ T242] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.833757][ T242] ? 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) 
[ 9.833994][ T242] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.834220][ T242] ksys_write (fs/read_write.c:731) 
[ 9.834386][ T242] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.834603][ T242] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.834839][ T242] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.835071][ T242] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.835337][  T242] RIP: 0033:0x7f83c1dcbb77
[ 9.835558][ T242] 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
[    9.836329][  T242] RSP: 002b:00007ffc40d72ea8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.836654][  T242] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f83c1dcbb77
[    9.836993][  T242] RDX: 0000000000000005 RSI: 0000560fa36b52f0 RDI: 0000000000000001
[    9.837315][  T242] RBP: 0000560fa36b52f0 R08: 0000000000000004 R09: 0000000000000077
[    9.837644][  T242] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005


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