======================================
| 0
| xx__-> [    9.438505][  T245] ------------[ cut here ]------------
| [ 9.438848][ T245] WARNING: CPU: 3 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) 
| [    9.439257][  T245] Modules linked in: netdevsim
[    9.439930][  T245] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.440191][ T245] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.440453][ 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
[    9.441168][  T245] RSP: 0000:ffffc90000777520 EFLAGS: 00010246
[    9.441427][  T245] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.441730][  T245] RDX: 0000000000000000 RSI: ffff888006092c98 RDI: ffff8880050b50f8
[    9.442042][  T245] RBP: ffff888002b30040 R08: 0000000000000000 R09: fffffbfff79bd83c
[    9.442344][  T245] R10: ffffffffbcdec1e7 R11: ffff8880050b45c0 R12: 0000000000000000
[    9.442648][  T245] R13: ffff888006092128 R14: ffff888006092008 R15: ffff888006092000
[    9.442959][  T245] FS:  00007f3a7d03d740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[    9.443310][  T245] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.443566][  T245] CR2: 00007f10e1888440 CR3: 0000000005d72005 CR4: 0000000000772ef0
[    9.443876][  T245] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.444180][  T245] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.444479][  T245] PKRU: 55555554
[    9.444639][  T245] Call Trace:
[    9.444807][  T245]  <TASK>
[ 9.444918][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.445126][ T245] ? __warn (kernel/panic.c:748) 
[ 9.445284][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.445488][ T245] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.445700][ T245] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.445913][ T245] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.446120][ T245] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.446336][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.446550][ T245] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.446818][ 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) 
[ 9.447040][ T245] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.447247][ T245] register_netdevice (net/core/dev.c:11003) 
[ 9.447459][ T245] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.447675][ T245] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.447908][ T245] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.448168][ T245] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.448323][ T245] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.448589][ T245] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.448856][ T245] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.449118][ T245] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.449331][ T245] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.449585][ T245] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.449801][ 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)) 
[ 9.449957][ T245] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.450171][ T245] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.450380][ T245] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.450584][ T245] driver_probe_device (drivers/base/dd.c:830) 
[ 9.450790][ T245] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.451006][ T245] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.451253][ T245] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.451461][ T245] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.451660][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.451870][ T245] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.452072][ T245] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.452279][ T245] __device_attach (drivers/base/dd.c:1030) 
[ 9.452481][ T245] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.452681][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.452893][ 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) 
[ 9.453105][ T245] bus_probe_device (drivers/base/bus.c:537) 
[ 9.453311][ T245] device_add (drivers/base/core.c:3672) 
[ 9.453524][ T245] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.453728][ T245] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.453951][ T245] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.454213][ T245] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.454479][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.454680][ T245] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.454900][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.455101][ T245] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.455312][ T245] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.455474][ T245] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.455683][ T245] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.455894][ 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) 
[ 9.456113][ T245] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.456322][ T245] ksys_write (fs/read_write.c:731) 
[ 9.456477][ T245] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.456677][ T245] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.456910][ T245] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.457118][ T245] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.457366][  T245] RIP: 0033:0x7f3a7d17eb77
[ 9.457582][ 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
[    9.458286][  T245] RSP: 002b:00007ffd36a49de8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.458589][  T245] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f3a7d17eb77
[    9.458904][  T245] RDX: 0000000000000005 RSI: 00005557335e12f0 RDI: 0000000000000001
[    9.459205][  T245] RBP: 00005557335e12f0 R08: 0000000000000004 R09: 0000000000000077
[    9.459503][  T245] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.459812][  T245] R13: 00007f3a7d23a760 R14: 0000000000000005 R15: 00007f3a7d2359c0
| [    9.471026][  T245] ------------[ cut here ]------------
| [ 9.471248][ T245] WARNING: CPU: 3 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) 
| [    9.471645][  T245] Modules linked in: netdevsim
| [    9.473132][  T245] Tainted: [W]=WARN
[    9.473291][  T245] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.473542][ T245] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.473887][ 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
[    9.474588][  T245] RSP: 0000:ffffc90000777520 EFLAGS: 00010246
[    9.474979][  T245] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.475281][  T245] RDX: 0000000000000000 RSI: ffff88800bb4ac98 RDI: ffff8880050b50f8
[    9.475582][  T245] RBP: ffff888002b30040 R08: 0000000000000000 R09: fffffbfff79bd83c
[    9.475974][  T245] R10: ffffffffbcdec1e7 R11: ffff8880050b45c0 R12: 0000000000000000
[    9.476272][  T245] R13: ffff88800bb4a128 R14: ffff88800bb4a008 R15: ffff88800bb4a000
[    9.476568][  T245] FS:  00007f3a7d03d740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[    9.477027][  T245] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.477278][  T245] CR2: 00007f10e1888440 CR3: 0000000005d72005 CR4: 0000000000772ef0
[    9.477576][  T245] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.477963][  T245] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.478261][  T245] PKRU: 55555554
[    9.478417][  T245] Call Trace:
[    9.478569][  T245]  <TASK>
[ 9.478674][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.478969][ T245] ? __warn (kernel/panic.c:748) 
[ 9.479127][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.479330][ T245] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.479538][ T245] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.479693][ T245] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.479984][ T245] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.480204][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.480415][ T245] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.480673][ 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) 
[ 9.480973][ T245] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.481178][ T245] register_netdevice (net/core/dev.c:11003) 
[ 9.481386][ T245] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.481603][ T245] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.481908][ T245] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.482169][ T245] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.482324][ T245] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.482587][ T245] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.482936][ T245] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.483201][ T245] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.483413][ T245] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.483668][ T245] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.483963][ 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)) 
[ 9.484117][ T245] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.484326][ T245] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.484532][ T245] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.484746][ T245] driver_probe_device (drivers/base/dd.c:830) 
[ 9.485041][ T245] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.485246][ T245] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.485494][ T245] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.485696][ T245] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.485985][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.486189][ T245] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.486393][ T245] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.486600][ T245] __device_attach (drivers/base/dd.c:1030) 
[ 9.486898][ T245] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.487100][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.487303][ 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) 
[ 9.487513][ T245] bus_probe_device (drivers/base/bus.c:537) 
[ 9.487720][ T245] device_add (drivers/base/core.c:3672) 
[ 9.488021][ T245] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.488222][ T245] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.488435][ T245] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.488698][ T245] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.489053][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.489253][ T245] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.489461][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.489665][ T245] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.489968][ T245] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.490132][ T245] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.490339][ T245] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.490538][ 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) 
[ 9.490748][ T245] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.491050][ T245] ksys_write (fs/read_write.c:731) 
[ 9.491206][ T245] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.491409][ T245] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.491620][ T245] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.491912][ T245] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.492159][  T245] RIP: 0033:0x7f3a7d17eb77
[ 9.492363][ 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
[    9.493154][  T245] RSP: 002b:00007ffd36a49de8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.493457][  T245] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f3a7d17eb77
[    9.493752][  T245] RDX: 0000000000000005 RSI: 00005557335e12f0 RDI: 0000000000000001
[    9.494147][  T245] RBP: 00005557335e12f0 R08: 0000000000000004 R09: 0000000000000077
[    9.494448][  T245] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.494742][  T245] R13: 00007f3a7d23a760 R14: 0000000000000005 R15: 00007f3a7d2359c0
| [    9.505905][  T245] ------------[ cut here ]------------
| [ 9.506122][ T245] WARNING: CPU: 0 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) 
| [    9.506523][  T245] Modules linked in: netdevsim
| [    9.507129][  T245] Tainted: [W]=WARN
[    9.507289][  T245] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.507537][ T245] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.507806][ 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
[    9.508504][  T245] RSP: 0018:ffffc90000777520 EFLAGS: 00010246
[    9.508766][  T245] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.509074][  T245] RDX: 0000000000000000 RSI: ffff88800a9c2c98 RDI: ffff8880050b50f8
[    9.509375][  T245] RBP: ffff888002b30040 R08: 0000000000000000 R09: fffffbfff79bd83c
[    9.509674][  T245] R10: ffffffffbcdec1e7 R11: ffff8880050b45c0 R12: 0000000000000000
[    9.509998][  T245] R13: ffff88800a9c2128 R14: ffff88800a9c2008 R15: ffff88800a9c2000
[    9.510298][  T245] FS:  00007f3a7d03d740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[    9.510640][  T245] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.510900][  T245] CR2: 00007f10e1c066f0 CR3: 0000000005d72003 CR4: 0000000000772ef0
[    9.511201][  T245] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.511497][  T245] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.511790][  T245] PKRU: 55555554
[    9.511953][  T245] Call Trace:
[    9.512105][  T245]  <TASK>
[ 9.512208][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.512407][ T245] ? __warn (kernel/panic.c:748) 
[ 9.512565][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.512769][ T245] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.512987][ T245] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.513141][ T245] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.513341][ T245] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.513554][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.513766][ T245] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.514046][ 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) 
[ 9.514257][ T245] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.514463][ T245] register_netdevice (net/core/dev.c:11003) 
[ 9.514669][ T245] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.514889][ T245] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.515107][ T245] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.515365][ T245] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.515524][ T245] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.515809][ T245] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.516069][ T245] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.516328][ T245] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.516541][ T245] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.516806][ T245] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.517033][ 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)) 
[ 9.517186][ T245] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.517396][ T245] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.517601][ T245] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.517829][ T245] driver_probe_device (drivers/base/dd.c:830) 
[ 9.518035][ T245] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.518241][ T245] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.518493][ T245] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.518696][ T245] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.518907][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.519110][ T245] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.519310][ T245] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.519518][ T245] __device_attach (drivers/base/dd.c:1030) 
[ 9.519721][ T245] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.519934][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.520139][ 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) 
[ 9.520356][ T245] bus_probe_device (drivers/base/bus.c:537) 
[ 9.520563][ T245] device_add (drivers/base/core.c:3672) 
[ 9.520769][ T245] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.520979][ T245] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.521193][ T245] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.521457][ T245] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.521718][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.521940][ T245] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.522152][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.522352][ T245] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.522561][ T245] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.522723][ T245] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.522943][ T245] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.523144][ 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) 
[ 9.523356][ T245] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.523565][ T245] ksys_write (fs/read_write.c:731) 
[ 9.523720][ T245] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.523929][ T245] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.524144][ T245] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.524348][ T245] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.524598][  T245] RIP: 0033:0x7f3a7d17eb77
[ 9.524815][ 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
[    9.525513][  T245] RSP: 002b:00007ffd36a49de8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.525839][  T245] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f3a7d17eb77
[    9.526141][  T245] RDX: 0000000000000005 RSI: 00005557335e12f0 RDI: 0000000000000001
[    9.526441][  T245] RBP: 00005557335e12f0 R08: 0000000000000004 R09: 0000000000000077
[    9.526738][  T245] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.527057][  T245] R13: 00007f3a7d23a760 R14: 0000000000000005 R15: 00007f3a7d2359c0
| [    9.546597][  T245] ------------[ cut here ]------------
| [ 9.546830][ T245] WARNING: CPU: 3 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) 
| [    9.547248][  T245] Modules linked in: netdevsim
| [    9.547830][  T245] Tainted: [W]=WARN
[    9.547987][  T245] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.548252][ T245] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.548505][ 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
[    9.549205][  T245] RSP: 0000:ffffc90000777520 EFLAGS: 00010246
[    9.549463][  T245] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.549758][  T245] RDX: 0000000000000000 RSI: ffff888004e62c98 RDI: ffff8880050b50f8
[    9.550097][  T245] RBP: ffff888002b30040 R08: 0000000000000000 R09: fffffbfff79bd83c
[    9.550405][  T245] R10: ffffffffbcdec1e7 R11: ffff8880050b45c0 R12: 0000000000000000
[    9.550699][  T245] R13: ffff888004e62128 R14: ffff888004e62008 R15: ffff888004e62000
[    9.551009][  T245] FS:  00007f3a7d03d740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[    9.551354][  T245] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.551605][  T245] CR2: 00007f10e1888440 CR3: 0000000005d72005 CR4: 0000000000772ef0
[    9.551932][  T245] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.552234][  T245] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.552533][  T245] PKRU: 55555554
[    9.552689][  T245] Call Trace:
[    9.552853][  T245]  <TASK>
[ 9.552959][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.553167][ T245] ? __warn (kernel/panic.c:748) 
[ 9.553323][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.553532][ T245] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.553742][ T245] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.553908][ T245] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.554115][ T245] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.554330][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.554544][ T245] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.554813][ 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) 
[ 9.555027][ T245] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.555236][ T245] register_netdevice (net/core/dev.c:11003) 
[ 9.555444][ T245] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.555657][ T245] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.555882][ T245] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.556142][ T245] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.556297][ T245] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.556566][ T245] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.556861][ T245] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.557128][ T245] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.557340][ T245] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.557595][ T245] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.557810][ 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)) 
[ 9.557968][ T245] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.558178][ T245] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.558385][ T245] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.558591][ T245] driver_probe_device (drivers/base/dd.c:830) 
[ 9.558816][ T245] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.559028][ T245] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.559275][ T245] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.559482][ T245] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.559682][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.559894][ T245] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.560094][ T245] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.560301][ T245] __device_attach (drivers/base/dd.c:1030) 
[ 9.560502][ T245] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.560702][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.560938][ 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) 
[ 9.561148][ T245] bus_probe_device (drivers/base/bus.c:537) 
[ 9.561353][ T245] device_add (drivers/base/core.c:3672) 
[ 9.561556][ T245] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.561757][ T245] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.561980][ T245] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.562245][ T245] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.562511][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.562712][ T245] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.562929][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.563129][ T245] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.563336][ T245] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.563496][ T245] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.563703][ T245] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.563913][ 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) 
[ 9.564123][ T245] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.564332][ T245] ksys_write (fs/read_write.c:731) 
[ 9.564489][ T245] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.564689][ T245] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.564909][ T245] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.565113][ T245] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.565360][  T245] RIP: 0033:0x7f3a7d17eb77
[ 9.565567][ 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
[    9.566266][  T245] RSP: 002b:00007ffd36a49de8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.566566][  T245] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f3a7d17eb77
[    9.566881][  T245] RDX: 0000000000000005 RSI: 00005557335e12f0 RDI: 0000000000000001
[    9.567181][  T245] RBP: 00005557335e12f0 R08: 0000000000000004 R09: 0000000000000077
[    9.567478][  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