======================================
| 0
| xx__-> [    9.404811][  T244] ------------[ cut here ]------------
| [ 9.405310][ T244] WARNING: CPU: 2 PID: 244 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) 
| [    9.405735][  T244] Modules linked in: netdevsim
[    9.406373][  T244] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.406642][ T244] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.406919][ T244] 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
[    9.408013][  T244] RSP: 0018:ffffc90000ae7520 EFLAGS: 00010246
[    9.408310][  T244] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.408631][  T244] RDX: 0000000000000000 RSI: ffff888004f92c98 RDI: ffff88800504ae38
[    9.408948][  T244] RBP: ffff88800baf0040 R08: 0000000000000000 R09: fffffbfff6cbd83c
[    9.409276][  T244] R10: ffffffffb65ec1e7 R11: ffff88800504a300 R12: 0000000000000000
[    9.409594][  T244] R13: ffff888004f92128 R14: ffff888004f92008 R15: ffff888004f92000
[    9.409908][  T244] FS:  00007f3763cb4740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.410299][  T244] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.410571][  T244] CR2: 0000561fc50162f8 CR3: 000000000abe8004 CR4: 0000000000772ef0
[    9.410888][  T244] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.411218][  T244] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.411538][  T244] PKRU: 55555554
[    9.411708][  T244] Call Trace:
[    9.411879][  T244]  <TASK>
[ 9.412003][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.412233][ T244] ? __warn (kernel/panic.c:748) 
[ 9.412406][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.412625][ T244] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.412848][ T244] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.413019][ T244] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.413245][ T244] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.413479][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.413706][ T244] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.413978][ T244] ? _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) 
[ 9.414210][ T244] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.414432][ T244] register_netdevice (net/core/dev.c:11003) 
[ 9.414658][ T244] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.414889][ T244] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.415133][ T244] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.415410][ T244] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.415580][ T244] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.415860][ T244] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.416142][ T244] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.416421][ T244] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.416647][ T244] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.416918][ T244] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.417151][ T244] ? 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)) 
[ 9.417322][ T244] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.417546][ T244] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.417829][ T244] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.418063][ T244] driver_probe_device (drivers/base/dd.c:830) 
[ 9.418291][ T244] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.418528][ T244] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.418798][ T244] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.419034][ T244] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.419258][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.419490][ T244] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.419703][ T244] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.419930][ T244] __device_attach (drivers/base/dd.c:1030) 
[ 9.420153][ T244] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.420395][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.420611][ T244] ? 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) 
[ 9.420837][ T244] bus_probe_device (drivers/base/bus.c:537) 
[ 9.421075][ T244] device_add (drivers/base/core.c:3672) 
[ 9.421297][ T244] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.421514][ T244] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.421747][ T244] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.422036][ T244] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.422340][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.422555][ T244] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.422789][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.423013][ T244] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.423251][ T244] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.423441][ T244] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.423673][ T244] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.423887][ T244] ? 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) 
[ 9.424121][ T244] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.424357][ T244] ksys_write (fs/read_write.c:731) 
[ 9.424525][ T244] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.424737][ T244] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.424963][ T244] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.425207][ T244] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.425476][  T244] RIP: 0033:0x7f3763df5b77
[ 9.425707][ T244] 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
[    9.426455][  T244] RSP: 002b:00007fffdd231e08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.426799][  T244] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f3763df5b77
[    9.427125][  T244] RDX: 0000000000000005 RSI: 0000561fc50152f0 RDI: 0000000000000001
[    9.427449][  T244] RBP: 0000561fc50152f0 R08: 0000000000000004 R09: 0000000000000077
[    9.427764][  T244] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.428094][  T244] R13: 00007f3763eb1760 R14: 0000000000000005 R15: 00007f3763eac9c0
| [    9.439655][  T244] ------------[ cut here ]------------
| [ 9.439914][ T244] WARNING: CPU: 2 PID: 244 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) 
| [    9.440377][  T244] Modules linked in: netdevsim
| [    9.440966][  T244] Tainted: [W]=WARN
[    9.441159][  T244] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.441428][ T244] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.441715][ T244] 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
[    9.443298][  T244] RSP: 0018:ffffc90000ae7520 EFLAGS: 00010246
[    9.443662][  T244] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.444086][  T244] RDX: 0000000000000000 RSI: ffff88800253ac98 RDI: ffff88800504ae38
[    9.444499][  T244] RBP: ffff88800baf0040 R08: 0000000000000000 R09: fffffbfff6cbd83c
[    9.444897][  T244] R10: ffffffffb65ec1e7 R11: ffff88800504a300 R12: 0000000000000000
[    9.445313][  T244] R13: ffff88800253a128 R14: ffff88800253a008 R15: ffff88800253a000
[    9.445730][  T244] FS:  00007f3763cb4740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.446194][  T244] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.446556][  T244] CR2: 0000561fc50162f8 CR3: 000000000abe8004 CR4: 0000000000772ef0
[    9.446965][  T244] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.447375][  T244] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.447789][  T244] PKRU: 55555554
[    9.448038][  T244] Call Trace:
[    9.448300][  T244]  <TASK>
[ 9.448505][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.448809][ T244] ? __warn (kernel/panic.c:748) 
[ 9.449074][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.449378][ T244] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.449694][ T244] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.449950][ T244] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.450268][ T244] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.450597][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.450907][ T244] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.451271][ T244] ? _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) 
[ 9.451577][ T244] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.451879][ T244] register_netdevice (net/core/dev.c:11003) 
[ 9.452201][ T244] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.452516][ T244] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.452837][ T244] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.453215][ T244] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.453482][ T244] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.453867][ T244] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.454263][ T244] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.454646][ T244] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.454976][ T244] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.455345][ T244] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.455652][ T244] ? 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)) 
[ 9.455903][ T244] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.456184][ T244] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.456428][ T244] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.456646][ T244] driver_probe_device (drivers/base/dd.c:830) 
[ 9.456862][ T244] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.457092][ T244] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.457361][ T244] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.457579][ T244] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.457796][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.458022][ T244] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.458254][ T244] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.458487][ T244] __device_attach (drivers/base/dd.c:1030) 
[ 9.458703][ T244] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.458919][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.459147][ T244] ? 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) 
[ 9.459381][ T244] bus_probe_device (drivers/base/bus.c:537) 
[ 9.459610][ T244] device_add (drivers/base/core.c:3672) 
[ 9.459833][ T244] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.460059][ T244] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.460310][ T244] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.460586][ T244] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.460867][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.461094][ T244] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.461322][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.461547][ T244] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.461783][ T244] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.461977][ T244] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.462238][ T244] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.462468][ T244] ? 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) 
[ 9.462706][ T244] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.462937][ T244] ksys_write (fs/read_write.c:731) 
[ 9.463115][ T244] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.463333][ T244] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.463558][ T244] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.463777][ T244] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.464037][  T244] RIP: 0033:0x7f3763df5b77
[ 9.464270][ T244] 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
[    9.464993][  T244] RSP: 002b:00007fffdd231e08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.465325][  T244] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f3763df5b77
[    9.465641][  T244] RDX: 0000000000000005 RSI: 0000561fc50152f0 RDI: 0000000000000001
[    9.465969][  T244] RBP: 0000561fc50152f0 R08: 0000000000000004 R09: 0000000000000077
[    9.466290][  T244] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.466607][  T244] R13: 00007f3763eb1760 R14: 0000000000000005 R15: 00007f3763eac9c0
| [    9.485912][  T244] ------------[ cut here ]------------
| [ 9.486168][ T244] WARNING: CPU: 3 PID: 244 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) 
| [    9.486571][  T244] Modules linked in: netdevsim
| [    9.487166][  T244] Tainted: [W]=WARN
[    9.487333][  T244] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.487601][ T244] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.487872][ T244] 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
[    9.488591][  T244] RSP: 0018:ffffc90000ae7520 EFLAGS: 00010246
[    9.488849][  T244] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.489175][  T244] RDX: 0000000000000000 RSI: ffff88800a93ac98 RDI: ffff88800504ae38
[    9.489493][  T244] RBP: ffff88800baf0040 R08: 0000000000000000 R09: fffffbfff6cbd83c
[    9.489809][  T244] R10: ffffffffb65ec1e7 R11: ffff88800504a300 R12: 0000000000000000
[    9.490129][  T244] R13: ffff88800a93a128 R14: ffff88800a93a008 R15: ffff88800a93a000
[    9.490448][  T244] FS:  00007f3763cb4740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[    9.490794][  T244] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.491053][  T244] CR2: 000055936cd98dec CR3: 000000000abe8006 CR4: 0000000000772ef0
[    9.491424][  T244] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.491739][  T244] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.492065][  T244] PKRU: 55555554
[    9.492224][  T244] Call Trace:
[    9.492394][  T244]  <TASK>
[ 9.492498][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.492701][ T244] ? __warn (kernel/panic.c:748) 
[ 9.492862][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.493076][ T244] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.493285][ T244] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.493441][ T244] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.493642][ T244] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.493858][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.494087][ T244] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.494349][ T244] ? _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) 
[ 9.494562][ T244] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.494770][ T244] register_netdevice (net/core/dev.c:11003) 
[ 9.494976][ T244] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.495209][ T244] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.495440][ T244] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.495715][ T244] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.495876][ T244] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.496154][ T244] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.496433][ T244] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.496703][ T244] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.496932][ T244] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.497198][ T244] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.497420][ T244] ? 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)) 
[ 9.497573][ T244] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.497784][ T244] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.497994][ T244] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.498224][ T244] driver_probe_device (drivers/base/dd.c:830) 
[ 9.498439][ T244] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.498646][ T244] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.498917][ T244] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.499140][ T244] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.499355][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.499564][ T244] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.499764][ T244] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.499971][ T244] __device_attach (drivers/base/dd.c:1030) 
[ 9.500182][ T244] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.500406][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.500610][ T244] ? 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) 
[ 9.500823][ T244] bus_probe_device (drivers/base/bus.c:537) 
[ 9.501028][ T244] device_add (drivers/base/core.c:3672) 
[ 9.501250][ T244] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.501463][ T244] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.501679][ T244] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.501954][ T244] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.502235][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.502450][ T244] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.502669][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.502869][ T244] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.503098][ T244] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.503261][ T244] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.503488][ T244] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.503691][ T244] ? 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) 
[ 9.503902][ T244] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.504121][ T244] ksys_write (fs/read_write.c:731) 
[ 9.504277][ T244] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.504477][ T244] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.504693][ T244] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.504897][ T244] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.505156][  T244] RIP: 0033:0x7f3763df5b77
[ 9.505366][ T244] 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
[    9.506062][  T244] RSP: 002b:00007fffdd231e08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.506369][  T244] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f3763df5b77
[    9.506664][  T244] RDX: 0000000000000005 RSI: 0000561fc50152f0 RDI: 0000000000000001
[    9.506960][  T244] RBP: 0000561fc50152f0 R08: 0000000000000004 R09: 0000000000000077
[    9.507264][  T244] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.507571][  T244] R13: 00007f3763eb1760 R14: 0000000000000005 R15: 00007f3763eac9c0
| [    9.518463][  T244] ------------[ cut here ]------------
| [ 9.518696][ T244] WARNING: CPU: 3 PID: 244 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) 
| [    9.519116][  T244] Modules linked in: netdevsim
| [    9.519697][  T244] Tainted: [W]=WARN
[    9.519856][  T244] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.520121][ T244] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.520401][ T244] 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
[    9.521966][  T244] RSP: 0018:ffffc90000ae7520 EFLAGS: 00010246
[    9.522319][  T244] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.522630][  T244] RDX: 0000000000000000 RSI: ffff888002422c98 RDI: ffff88800504ae38
[    9.522929][  T244] RBP: ffff88800baf0040 R08: 0000000000000000 R09: fffffbfff6cbd83c
[    9.523324][  T244] R10: ffffffffb65ec1e7 R11: ffff88800504a300 R12: 0000000000000000
[    9.523621][  T244] R13: ffff888002422128 R14: ffff888002422008 R15: ffff888002422000
[    9.523916][  T244] FS:  00007f3763cb4740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[    9.524356][  T244] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.524611][  T244] CR2: 000055936cd98dec CR3: 000000000abe8006 CR4: 0000000000772ef0
[    9.524909][  T244] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.525295][  T244] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.525598][  T244] PKRU: 55555554
[    9.525748][  T244] Call Trace:
[    9.525898][  T244]  <TASK>
[ 9.526004][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.526297][ T244] ? __warn (kernel/panic.c:748) 
[ 9.526467][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.526669][ T244] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.526875][ T244] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.527033][ T244] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.527326][ T244] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.527545][ T244] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.527756][ T244] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.528012][ T244] ? _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) 
[ 9.528307][ T244] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.528512][ T244] register_netdevice (net/core/dev.c:11003) 
[ 9.528724][ T244] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.528939][ T244] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.529246][ T244] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.529509][ T244] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.529663][ T244] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.529926][ T244] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.530287][ T244] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.530553][ T244] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.530765][ T244] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.531016][ T244] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.531315][ T244] ? 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)) 
[ 9.531470][ T244] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.531679][ T244] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.531893][ T244] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.532191][ T244] driver_probe_device (drivers/base/dd.c:830) 
[ 9.532399][ T244] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.532611][ T244] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.532873][ T244] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.533176][ T244] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.533395][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.533623][ T244] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.533842][ T244] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.534162][ T244] __device_attach (drivers/base/dd.c:1030) 
[ 9.534383][ T244] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.534598][ T244] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.534800][ T244] ? 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) 
[ 9.535011][ T244] bus_probe_device (drivers/base/bus.c:537) 
[ 9.535319][ T244] device_add (drivers/base/core.c:3672) 
[ 9.535527][ T244] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.535728][ T244] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.535943][ T244] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.536292][ T244] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.536558][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.536758][ T244] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.536971][ T244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.537263][ T244] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.537472][ T244] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.537633][ T244] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.537841][ T244] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.538042][ T244] ? 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) 
[ 9.538349][ T244] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.538567][ T244] ksys_write (fs/read_write.c:731) 
[ 9.538726][ T244] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.538925][ T244] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.539232][ T244] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.539445][ T244] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.539694][  T244] RIP: 0033:0x7f3763df5b77
[ 9.539898][ T244] 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
[    9.540705][  T244] RSP: 002b:00007fffdd231e08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.541012][  T244] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f3763df5b77
[    9.541401][  T244] RDX: 0000000000000005 RSI: 0000561fc50152f0 RDI: 0000000000000001
[    9.541706][  T244] RBP: 0000561fc50152f0 R08: 0000000000000004 R09: 0000000000000077
[    9.542001][  T244] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005


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