======================================
| 0
| xx__-> [   10.048423][  T243] ------------[ cut here ]------------
| [ 10.049007][ T243] WARNING: CPU: 1 PID: 243 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:10596) 
| [   10.049438][  T243] Modules linked in: netdevsim
[   10.050156][  T243] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.050433][ T243] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 10.050732][ T243] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   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 b8 56 78 00       	call   0x7856d9
  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
[   10.051495][  T243] RSP: 0018:ffffc90000537520 EFLAGS: 00010246
[   10.051779][  T243] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.052109][  T243] RDX: 0000000000000000 RSI: ffff88800a852c98 RDI: ffff88800abd0b78
[   10.052429][  T243] RBP: ffff88800a7a8040 R08: 0000000000000000 R09: fffffbfff333d844
[   10.052770][  T243] R10: ffffffff999ec227 R11: ffff88800abd0040 R12: 0000000000000000
[   10.053107][  T243] R13: ffff88800a852128 R14: ffff88800a852008 R15: ffff88800a852000
[   10.053510][  T243] FS:  00007f1c06306740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   10.053998][  T243] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.054423][  T243] CR2: 0000561b8e34f2f8 CR3: 000000000a5de001 CR4: 0000000000772ef0
[   10.054987][  T243] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.055519][  T243] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.055897][  T243] PKRU: 55555554
[   10.056074][  T243] Call Trace:
[   10.056293][  T243]  <TASK>
[ 10.056410][ T243] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 10.056642][ T243] ? __warn (kernel/panic.c:748) 
[ 10.056806][ T243] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 10.057040][ T243] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.057254][ T243] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.057414][ T243] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.057635][ T243] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.057856][ T243] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 10.058087][ T243] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 10.058351][ T243] ? _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) 
[ 10.058597][ T243] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.058810][ T243] register_netdevice (net/core/dev.c:11033) 
[ 10.059043][ T243] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 10.059266][ T243] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.059546][ T243] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.059868][ T243] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 10.060045][ T243] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.060372][ T243] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.060659][ T243] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 10.060931][ T243] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 10.061168][ T243] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 10.061515][ T243] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 10.061780][ T243] ? 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)) 
[ 10.062012][ T243] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 10.062233][ T243] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 10.062491][ T243] __driver_probe_device (drivers/base/dd.c:800) 
[ 10.062745][ T243] driver_probe_device (drivers/base/dd.c:830) 
[ 10.062955][ T243] __device_attach_driver (drivers/base/dd.c:959) 
[ 10.063185][ T243] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 10.063455][ T243] bus_for_each_drv (drivers/base/bus.c:462) 
[ 10.063698][ T243] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 10.063908][ T243] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.064131][ T243] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.064342][ T243] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 10.064570][ T243] __device_attach (drivers/base/dd.c:1030) 
[ 10.064835][ T243] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 10.065063][ T243] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.065276][ T243] ? 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) 
[ 10.065508][ T243] bus_probe_device (drivers/base/bus.c:537) 
[ 10.065786][ T243] device_add (drivers/base/core.c:3672) 
[ 10.066021][ T243] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 10.066234][ T243] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 10.066470][ T243] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 10.066801][ T243] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 10.067098][ T243] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.067308][ T243] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.067602][ T243] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.067829][ T243] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.068107][ T243] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.068279][ T243] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.068606][ T243] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 10.068884][ T243] ? 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) 
[ 10.069121][ T243] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 10.069340][ T243] ksys_write (fs/read_write.c:731) 
[ 10.069555][ T243] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.069762][ T243] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.070060][ T243] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.070318][ T243] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.070656][  T243] RIP: 0033:0x7f1c06447b77
[ 10.070982][ T243] 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
[   10.072197][  T243] RSP: 002b:00007ffec31dcba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.072733][  T243] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f1c06447b77
[   10.073276][  T243] RDX: 0000000000000005 RSI: 0000561b8e34e2f0 RDI: 0000000000000001
[   10.073718][  T243] RBP: 0000561b8e34e2f0 R08: 0000000000000004 R09: 0000000000000077
[   10.074043][  T243] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[   10.074369][  T243] R13: 00007f1c06503760 R14: 0000000000000005 R15: 00007f1c064fe9c0
| [   10.102643][  T243] ------------[ cut here ]------------
| [ 10.102945][ T243] WARNING: CPU: 1 PID: 243 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:10596) 
| [   10.103477][  T243] Modules linked in: netdevsim
| [   10.104261][  T243] Tainted: [W]=WARN
[   10.104490][  T243] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.104822][ T243] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 10.105169][ T243] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   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 b8 56 78 00       	call   0x7856d9
  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
[   10.105921][  T243] RSP: 0018:ffffc90000537520 EFLAGS: 00010246
[   10.106195][  T243] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.106564][  T243] RDX: 0000000000000000 RSI: ffff88800bccac98 RDI: ffff88800abd0b78
[   10.106899][  T243] RBP: ffff88800a7a8040 R08: 0000000000000000 R09: fffffbfff333d844
[   10.107221][  T243] R10: ffffffff999ec227 R11: ffff88800abd0040 R12: 0000000000000000
[   10.107546][  T243] R13: ffff88800bcca128 R14: ffff88800bcca008 R15: ffff88800bcca000
[   10.107849][  T243] FS:  00007f1c06306740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   10.108217][  T243] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.108492][  T243] CR2: 0000561b8e34f2f8 CR3: 000000000a5de001 CR4: 0000000000772ef0
[   10.108797][  T243] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.109112][  T243] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.109414][  T243] PKRU: 55555554
[   10.109603][  T243] Call Trace:
[   10.109760][  T243]  <TASK>
[ 10.109873][ T243] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 10.110093][ T243] ? __warn (kernel/panic.c:748) 
[ 10.110254][ T243] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 10.110495][ T243] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.110808][ T243] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.110983][ T243] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.111190][ T243] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.111411][ T243] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 10.111644][ T243] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 10.111905][ T243] ? _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) 
[ 10.112132][ T243] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.112344][ T243] register_netdevice (net/core/dev.c:11033) 
[ 10.112631][ T243] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 10.112849][ T243] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.113153][ T243] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.113423][ T243] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 10.113592][ T243] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.113927][ T243] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.114206][ T243] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 10.114517][ T243] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 10.114782][ T243] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 10.115075][ T243] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 10.115292][ T243] ? 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)) 
[ 10.115518][ T243] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 10.115737][ T243] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 10.115949][ T243] __driver_probe_device (drivers/base/dd.c:800) 
[ 10.116219][ T243] driver_probe_device (drivers/base/dd.c:830) 
[ 10.116467][ T243] __device_attach_driver (drivers/base/dd.c:959) 
[ 10.116744][ T243] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 10.117033][ T243] bus_for_each_drv (drivers/base/bus.c:462) 
[ 10.117283][ T243] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 10.117527][ T243] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.117770][ T243] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.117993][ T243] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 10.118270][ T243] __device_attach (drivers/base/dd.c:1030) 
[ 10.118519][ T243] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 10.118768][ T243] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.119041][ T243] ? 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) 
[ 10.119258][ T243] bus_probe_device (drivers/base/bus.c:537) 
[ 10.119509][ T243] device_add (drivers/base/core.c:3672) 
[ 10.119748][ T243] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 10.119959][ T243] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 10.120204][ T243] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 10.120487][ T243] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 10.120754][ T243] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.120960][ T243] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.121191][ T243] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.121396][ T243] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.121626][ T243] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.121792][ T243] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.122016][ T243] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 10.122224][ T243] ? 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) 
[ 10.122461][ T243] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 10.122690][ T243] ksys_write (fs/read_write.c:731) 
[ 10.122851][ T243] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.123070][ T243] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.123298][ T243] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.123576][ T243] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.123857][  T243] RIP: 0033:0x7f1c06447b77
[ 10.124085][ T243] 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
[   10.124822][  T243] RSP: 002b:00007ffec31dcba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.125154][  T243] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f1c06447b77
[   10.125468][  T243] RDX: 0000000000000005 RSI: 0000561b8e34e2f0 RDI: 0000000000000001
[   10.125773][  T243] RBP: 0000561b8e34e2f0 R08: 0000000000000004 R09: 0000000000000077
[   10.126092][  T243] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[   10.126398][  T243] R13: 00007f1c06503760 R14: 0000000000000005 R15: 00007f1c064fe9c0
| [   10.140267][  T243] ------------[ cut here ]------------
| [ 10.140617][ T243] WARNING: CPU: 1 PID: 243 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:10596) 
| [   10.141071][  T243] Modules linked in: netdevsim
| [   10.141655][  T243] Tainted: [W]=WARN
[   10.141812][  T243] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.142182][ T243] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 10.142462][ T243] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   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 b8 56 78 00       	call   0x7856d9
  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
[   10.143288][  T243] RSP: 0018:ffffc90000537520 EFLAGS: 00010246
[   10.143608][  T243] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.143913][  T243] RDX: 0000000000000000 RSI: ffff888002552c98 RDI: ffff88800abd0b78
[   10.144319][  T243] RBP: ffff88800a7a8040 R08: 0000000000000000 R09: fffffbfff333d844
[   10.144637][  T243] R10: ffffffff999ec227 R11: ffff88800abd0040 R12: 0000000000000000
[   10.145076][  T243] R13: ffff888002552128 R14: ffff888002552008 R15: ffff888002552000
[   10.145386][  T243] FS:  00007f1c06306740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   10.145751][  T243] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.146169][  T243] CR2: 0000561b8e34f2f8 CR3: 000000000a5de001 CR4: 0000000000772ef0
[   10.146597][  T243] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.147134][  T243] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.147591][  T243] PKRU: 55555554
[   10.147826][  T243] Call Trace:
[   10.148089][  T243]  <TASK>
[ 10.148198][ T243] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 10.148406][ T243] ? __warn (kernel/panic.c:748) 
[ 10.148587][ T243] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 10.148869][ T243] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.149290][ T243] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.149533][ T243] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.149746][ T243] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.150135][ T243] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 10.150362][ T243] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 10.150656][ T243] ? _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) 
[ 10.150878][ T243] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.151194][ T243] register_netdevice (net/core/dev.c:11033) 
[ 10.151408][ T243] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 10.151651][ T243] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.151874][ T243] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.152239][ T243] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 10.152400][ T243] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.152685][ T243] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.152948][ T243] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 10.153321][ T243] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 10.153552][ T243] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 10.153811][ T243] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 10.154118][ T243] ? 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)) 
[ 10.154284][ T243] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 10.154533][ T243] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 10.154746][ T243] __driver_probe_device (drivers/base/dd.c:800) 
[ 10.155076][ T243] driver_probe_device (drivers/base/dd.c:830) 
[ 10.155287][ T243] __device_attach_driver (drivers/base/dd.c:959) 
[ 10.155553][ T243] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 10.155839][ T243] bus_for_each_drv (drivers/base/bus.c:462) 
[ 10.156152][ T243] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 10.156360][ T243] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.156580][ T243] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.156790][ T243] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 10.157107][ T243] __device_attach (drivers/base/dd.c:1030) 
[ 10.157313][ T243] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 10.157517][ T243] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.157730][ T243] ? 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) 
[ 10.157944][ T243] bus_probe_device (drivers/base/bus.c:537) 
[ 10.158250][ T243] device_add (drivers/base/core.c:3672) 
[ 10.158495][ T243] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 10.158733][ T243] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 10.158952][ T243] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 10.159325][ T243] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 10.159675][ T243] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.159883][ T243] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.160204][ T243] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.160411][ T243] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.160636][ T243] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.160800][ T243] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.161110][ T243] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 10.161386][ T243] ? 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) 
[ 10.161617][ T243] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 10.161833][ T243] ksys_write (fs/read_write.c:731) 
[ 10.162153][ T243] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.162410][ T243] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.162665][ T243] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.162921][ T243] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.163355][  T243] RIP: 0033:0x7f1c06447b77
[ 10.163601][ T243] 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
[   10.164500][  T243] RSP: 002b:00007ffec31dcba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.164905][  T243] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f1c06447b77
[   10.165484][  T243] RDX: 0000000000000005 RSI: 0000561b8e34e2f0 RDI: 0000000000000001
[   10.166179][  T243] RBP: 0000561b8e34e2f0 R08: 0000000000000004 R09: 0000000000000077
[   10.166696][  T243] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[   10.167399][  T243] R13: 00007f1c06503760 R14: 0000000000000005 R15: 00007f1c064fe9c0
| [   10.181205][  T243] ------------[ cut here ]------------
| [ 10.181472][ T243] WARNING: CPU: 2 PID: 243 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:10596) 
| [   10.181921][  T243] Modules linked in: netdevsim
| [   10.182592][  T243] Tainted: [W]=WARN
[   10.182782][  T243] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.183093][ T243] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 10.183389][ T243] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   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 b8 56 78 00       	call   0x7856d9
  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
[   10.184180][  T243] RSP: 0018:ffffc90000537520 EFLAGS: 00010246
[   10.184467][  T243] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.184810][  T243] RDX: 0000000000000000 RSI: ffff888008d52c98 RDI: ffff88800abd0b78
[   10.185252][  T243] RBP: ffff88800a7a8040 R08: 0000000000000000 R09: fffffbfff333d844
[   10.185596][  T243] R10: ffffffff999ec227 R11: ffff88800abd0040 R12: 0000000000000000
[   10.185933][  T243] R13: ffff888008d52128 R14: ffff888008d52008 R15: ffff888008d52000
[   10.186324][  T243] FS:  00007f1c06306740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   10.186717][  T243] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.187017][  T243] CR2: 00007f280ca9b960 CR3: 000000000a5de001 CR4: 0000000000772ef0
[   10.187356][  T243] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.187692][  T243] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.188050][  T243] PKRU: 55555554
[   10.188232][  T243] Call Trace:
[   10.188418][  T243]  <TASK>
[ 10.188545][ T243] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 10.188777][ T243] ? __warn (kernel/panic.c:748) 
[ 10.188976][ T243] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 10.189213][ T243] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.189455][ T243] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.189635][ T243] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.189870][ T243] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.190130][ T243] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 10.190375][ T243] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 10.190666][ T243] ? _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) 
[ 10.190903][ T243] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.191157][ T243] register_netdevice (net/core/dev.c:11033) 
[ 10.191395][ T243] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 10.191637][ T243] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.191885][ T243] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.192187][ T243] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 10.192368][ T243] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.192664][ T243] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.192955][ T243] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 10.193264][ T243] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 10.193506][ T243] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 10.193798][ T243] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 10.194048][ T243] ? 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)) 
[ 10.194227][ T243] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 10.194465][ T243] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 10.194707][ T243] __driver_probe_device (drivers/base/dd.c:800) 
[ 10.194947][ T243] driver_probe_device (drivers/base/dd.c:830) 
[ 10.195210][ T243] __device_attach_driver (drivers/base/dd.c:959) 
[ 10.195442][ T243] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 10.195723][ T243] bus_for_each_drv (drivers/base/bus.c:462) 
[ 10.195954][ T243] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 10.196200][ T243] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.196440][ T243] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.196672][ T243] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 10.196909][ T243] __device_attach (drivers/base/dd.c:1030) 
[ 10.197166][ T243] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 10.197394][ T243] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.197627][ T243] ? 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) 
[ 10.197869][ T243] bus_probe_device (drivers/base/bus.c:537) 
[ 10.198124][ T243] device_add (drivers/base/core.c:3672) 
[ 10.198361][ T243] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 10.198591][ T243] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 10.198836][ T243] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 10.199141][ T243] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 10.199436][ T243] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.199664][ T243] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.199907][ T243] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.200153][ T243] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.200398][ T243] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.200587][ T243] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.200824][ T243] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 10.201068][ T243] ? 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) 
[ 10.201311][ T243] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 10.201549][ T243] ksys_write (fs/read_write.c:731) 
[ 10.201740][ T243] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.201980][ T243] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.202223][ T243] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.202459][ T243] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.202738][  T243] RIP: 0033:0x7f1c06447b77
[ 10.202986][ T243] 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
[   10.203750][  T243] RSP: 002b:00007ffec31dcba8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.204104][  T243] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f1c06447b77
[   10.204439][  T243] RDX: 0000000000000005 RSI: 0000561b8e34e2f0 RDI: 0000000000000001
[   10.204775][  T243] RBP: 0000561b8e34e2f0 R08: 0000000000000004 R09: 0000000000000077
[   10.205142][  T243] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005


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