======================================
| 0
| xx__-> [   10.136396][  T227] ------------[ cut here ]------------
| [ 10.136810][ T227] WARNING: CPU: 0 PID: 227 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) 
| [   10.137244][  T227] Modules linked in: netdevsim
[   10.137887][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.138156][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.138418][ T227] 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
[   10.139137][  T227] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[   10.139402][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.139718][  T227] RDX: 0000000000000000 RSI: ffff88800bf42c98 RDI: ffff8880093ad0a8
[   10.140028][  T227] RBP: ffffffff8c123440 R08: 0000000000000000 R09: fffffbfff13fd83c
[   10.140350][  T227] R10: ffffffff89fec1e7 R11: ffff8880093ac5c0 R12: 0000000000000000
[   10.140663][  T227] R13: ffff88800bf42128 R14: ffff88800bf42008 R15: ffff88800bf42000
[   10.140977][  T227] FS:  00007f676eb5c740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   10.141346][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.141614][  T227] CR2: 000055ca8e7bc47c CR3: 000000000b89e001 CR4: 0000000000772ef0
[   10.141926][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.142247][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.142554][  T227] PKRU: 55555554
[   10.142715][  T227] Call Trace:
[   10.142878][  T227]  <TASK>
[ 10.142991][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.143213][ T227] ? __warn (kernel/panic.c:748) 
[ 10.143384][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.143593][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.143811][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.143973][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.144191][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.144415][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.144632][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.144896][ T227] ? _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) 
[ 10.145121][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.145334][ T227] register_netdevice (net/core/dev.c:11003) 
[ 10.145550][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.145767][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.145993][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.146270][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.146552][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 10.146823][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.147034][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 10.147263][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 10.147531][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.147739][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.147949][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 10.148170][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.148383][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.148544][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.148752][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 10.148967][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.149191][ T227] ksys_write (fs/read_write.c:731) 
[ 10.149362][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.149583][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.149800][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.150070][  T227] RIP: 0033:0x7f676ec9db77
[ 10.150293][ T227] 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
[   10.151033][  T227] RSP: 002b:00007ffda8ab4648 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.151361][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f676ec9db77
[   10.151676][  T227] RDX: 0000000000000002 RSI: 000055ca8e9a5130 RDI: 0000000000000001
[   10.151988][  T227] RBP: 000055ca8e9a5130 R08: 0000000000000000 R09: 00007f676ed104e0
[   10.152321][  T227] R10: 00007f676ed103e0 R11: 0000000000000246 R12: 0000000000000002
[   10.152631][  T227] R13: 00007f676ed59760 R14: 0000000000000002 R15: 00007f676ed549c0
| [  138.884382][  T227] ------------[ cut here ]------------
| [ 138.884653][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  138.885048][  T227] Modules linked in: netdevsim
| [  138.885660][  T227] Tainted: [W]=WARN
[  138.885834][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 138.886095][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 138.886356][ T227] 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
[  138.887017][  T227] RSP: 0000:ffffc90000b47910 EFLAGS: 00010246
[  138.887276][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  138.887572][  T227] RDX: 0000000000000000 RSI: ffff888009622c98 RDI: ffff8880093ad0a8
[  138.887860][  T227] RBP: ffffffff8c123440 R08: 0000000000000000 R09: fffffbfff13fd83c
[  138.888163][  T227] R10: ffffffff89fec1e7 R11: ffff8880093ac5c0 R12: 0000000000000000
[  138.888454][  T227] R13: ffff888009622128 R14: ffff888009622008 R15: ffff888009622000
[  138.888743][  T227] FS:  00007f676eb5c740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  138.889089][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  138.889340][  T227] CR2: 00007f4117006ec0 CR3: 000000000b89e002 CR4: 0000000000772ef0
[  138.889633][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  138.889923][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  138.890225][  T227] PKRU: 55555554
[  138.890383][  T227] Call Trace:
[  138.890538][  T227]  <TASK>
[ 138.890653][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 138.890854][ T227] ? __warn (kernel/panic.c:748) 
[ 138.891012][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 138.891232][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 138.891441][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 138.891600][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 138.891798][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 138.892012][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 138.892234][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 138.892488][ T227] ? _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) 
[ 138.892705][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 138.892910][ T227] register_netdevice (net/core/dev.c:11003) 
[ 138.893153][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 138.893369][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 138.893588][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 138.893850][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 138.894132][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 138.894393][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 138.894596][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 138.894812][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 138.895078][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 138.895282][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 138.895488][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 138.895692][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 138.895901][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 138.896080][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 138.896288][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 138.896502][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 138.896716][ T227] ksys_write (fs/read_write.c:731) 
[ 138.896881][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 138.897105][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 138.897311][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  138.897560][  T227] RIP: 0033:0x7f676ec9db77
[ 138.897765][ T227] 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
[  138.898432][  T227] RSP: 002b:00007ffda8ab32d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  138.898729][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f676ec9db77
[  138.899013][  T227] RDX: 0000000000000002 RSI: 000055ca8e9a5130 RDI: 0000000000000001
[  138.899316][  T227] RBP: 000055ca8e9a5130 R08: 0000000000000000 R09: 00007f676ed104e0
[  138.899609][  T227] R10: 00007f676ed103e0 R11: 0000000000000246 R12: 0000000000000002
[  138.899900][  T227] R13: 00007f676ed59760 R14: 0000000000000002 R15: 00007f676ed549c0
| [  140.442849][  T227] ------------[ cut here ]------------
| [ 140.443148][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  140.443542][  T227] Modules linked in: netdevsim
| [  140.444154][  T227] Tainted: [W]=WARN
[  140.444310][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 140.444553][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 140.444803][ T227] 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
[  140.445469][  T227] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  140.445717][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  140.446000][  T227] RDX: 0000000000000000 RSI: ffff8880097a2c98 RDI: ffff8880093ad0a8
[  140.446299][  T227] RBP: ffffffff8c123440 R08: 0000000000000000 R09: fffffbfff13fd83c
[  140.446581][  T227] R10: ffffffff89fec1e7 R11: ffff8880093ac5c0 R12: 0000000000000000
[  140.446870][  T227] R13: ffff8880097a2128 R14: ffff8880097a2008 R15: ffff8880097a2000
[  140.447161][  T227] FS:  00007f676eb5c740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  140.447491][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  140.447732][  T227] CR2: 000055ca8e7bc47c CR3: 000000000b89e002 CR4: 0000000000772ef0
[  140.448021][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  140.448972][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  140.449274][  T227] PKRU: 55555554
[  140.449431][  T227] Call Trace:
[  140.449585][  T227]  <TASK>
[ 140.449694][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 140.449897][ T227] ? __warn (kernel/panic.c:748) 
[ 140.450069][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 140.450268][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 140.450477][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 140.450634][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 140.450837][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 140.451048][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 140.451266][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 140.451526][ T227] ? _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) 
[ 140.451731][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 140.451935][ T227] register_netdevice (net/core/dev.c:11003) 
[ 140.452148][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 140.452358][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 140.452577][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 140.452837][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 140.453117][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 140.453372][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 140.453573][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 140.453783][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 140.454036][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 140.454245][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 140.454448][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 140.454652][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 140.454854][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 140.455020][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 140.455234][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 140.455445][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 140.455659][ T227] ksys_write (fs/read_write.c:731) 
[ 140.455819][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 140.456031][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 140.456242][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  140.456484][  T227] RIP: 0033:0x7f676ec9db77
[ 140.456688][ T227] 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
[  140.457368][  T227] RSP: 002b:00007ffda8ab32d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  140.457659][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f676ec9db77
[  140.457947][  T227] RDX: 0000000000000002 RSI: 000055ca8e9a5130 RDI: 0000000000000001
[  140.458252][  T227] RBP: 000055ca8e9a5130 R08: 0000000000000000 R09: 00007f676ed104e0
[  140.458543][  T227] R10: 00007f676ed103e0 R11: 0000000000000246 R12: 0000000000000002
[  140.458835][  T227] R13: 00007f676ed59760 R14: 0000000000000002 R15: 00007f676ed549c0
| [  141.980946][  T227] ------------[ cut here ]------------
| [ 141.981258][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  141.981649][  T227] Modules linked in: netdevsim
| [  141.982268][  T227] Tainted: [W]=WARN
[  141.982425][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 141.982688][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 141.982936][ T227] 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
[  141.983594][  T227] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  141.983839][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  141.984136][  T227] RDX: 0000000000000000 RSI: ffff88800ba22c98 RDI: ffff8880093ad0a8
[  141.984422][  T227] RBP: ffffffff8c123440 R08: 0000000000000000 R09: fffffbfff13fd83c
[  141.984704][  T227] R10: ffffffff89fec1e7 R11: ffff8880093ac5c0 R12: 0000000000000000
[  141.984991][  T227] R13: ffff88800ba22128 R14: ffff88800ba22008 R15: ffff88800ba22000
[  141.985286][  T227] FS:  00007f676eb5c740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  141.985612][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  141.985860][  T227] CR2: 000055ca8e7bc47c CR3: 000000000b89e002 CR4: 0000000000772ef0
[  141.986158][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  141.986442][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  141.986735][  T227] PKRU: 55555554
[  141.986889][  T227] Call Trace:
[  141.987044][  T227]  <TASK>
[ 141.987165][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 141.987367][ T227] ? __warn (kernel/panic.c:748) 
[ 141.987528][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 141.987729][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 141.987937][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 141.988101][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 141.988303][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 141.988514][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 141.988726][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 141.988974][ T227] ? _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) 
[ 141.989190][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 141.989390][ T227] register_netdevice (net/core/dev.c:11003) 
[ 141.989595][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 141.989805][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 141.990026][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 141.990298][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 141.990578][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 141.990832][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 141.991038][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 141.991260][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 141.991516][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 141.991714][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 141.991912][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 141.992138][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 141.992345][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 141.992513][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 141.992730][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 141.992945][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 141.993166][ T227] ksys_write (fs/read_write.c:731) 
[ 141.993329][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 141.993538][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 141.993741][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  141.993983][  T227] RIP: 0033:0x7f676ec9db77
[ 141.994201][ T227] 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
[  141.994854][  T227] RSP: 002b:00007ffda8ab32d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  141.995157][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f676ec9db77
[  141.995451][  T227] RDX: 0000000000000002 RSI: 000055ca8e9a5130 RDI: 0000000000000001
[  141.995739][  T227] RBP: 000055ca8e9a5130 R08: 0000000000000000 R09: 00007f676ed104e0
[  141.996029][  T227] R10: 00007f676ed103e0 R11: 0000000000000246 R12: 0000000000000002
[  141.996331][  T227] R13: 00007f676ed59760 R14: 0000000000000002 R15: 00007f676ed549c0
| [  143.523425][  T227] ------------[ cut here ]------------
| [ 143.523696][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  143.524111][  T227] Modules linked in: netdevsim
| [  143.524691][  T227] Tainted: [W]=WARN
[  143.524844][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 143.525101][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 143.525350][ T227] 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
[  143.525993][  T227] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  143.526250][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  143.526543][  T227] RDX: 0000000000000000 RSI: ffff888005272c98 RDI: ffff8880093ad0a8
[  143.526823][  T227] RBP: ffffffff8c123440 R08: 0000000000000000 R09: fffffbfff13fd83c
[  143.527122][  T227] R10: ffffffff89fec1e7 R11: ffff8880093ac5c0 R12: 0000000000000000
[  143.527423][  T227] R13: ffff888005272128 R14: ffff888005272008 R15: ffff888005272000
[  143.527706][  T227] FS:  00007f676eb5c740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  143.528039][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  143.528298][  T227] CR2: 000055ca8e7ee018 CR3: 000000000b89e005 CR4: 0000000000772ef0
[  143.528587][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  143.528880][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  143.529173][  T227] PKRU: 55555554
[  143.529327][  T227] Call Trace:
[  143.529484][  T227]  <TASK>
[ 143.529592][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 143.529792][ T227] ? __warn (kernel/panic.c:748) 
[ 143.529951][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 143.530161][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 143.530370][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 143.530529][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 143.530727][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 143.530947][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 143.531164][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 143.531414][ T227] ? _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) 
[ 143.531620][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 143.531823][ T227] register_netdevice (net/core/dev.c:11003) 
[ 143.532031][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 143.532253][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 143.532471][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 143.532737][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 143.533009][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 143.533273][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 143.533471][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 143.533683][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 143.533938][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 143.534146][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 143.534346][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 143.534546][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 143.534751][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 143.534916][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 143.535132][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 143.535430][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 143.535640][ T227] ksys_write (fs/read_write.c:731) 
[ 143.535805][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 143.536023][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 143.536230][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  143.536475][  T227] RIP: 0033:0x7f676ec9db77
[ 143.536680][ T227] 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
[  143.537350][  T227] RSP: 002b:00007ffda8ab32d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  143.537644][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f676ec9db77
[  143.537939][  T227] RDX: 0000000000000002 RSI: 000055ca8e9a5130 RDI: 0000000000000001
[  143.538243][  T227] RBP: 000055ca8e9a5130 R08: 0000000000000000 R09: 00007f676ed104e0
[  143.538533][  T227] R10: 00007f676ed103e0 R11: 0000000000000246 R12: 0000000000000002
[  143.538819][  T227] R13: 00007f676ed59760 R14: 0000000000000002 R15: 00007f676ed549c0
| [  144.999988][  T227] ------------[ cut here ]------------
| [ 145.000279][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  145.000669][  T227] Modules linked in: netdevsim
| [  145.002105][  T227] Tainted: [W]=WARN
[  145.002493][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 145.002925][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 145.003312][ T227] 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
[  145.004076][  T227] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  145.004396][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  145.004753][  T227] RDX: 0000000000000000 RSI: ffff88800bd6ac98 RDI: ffff8880093ad0a8
[  145.005145][  T227] RBP: ffffffff8c123440 R08: 0000000000000000 R09: fffffbfff13fd83c
[  145.005587][  T227] R10: ffffffff89fec1e7 R11: ffff8880093ac5c0 R12: 0000000000000000
[  145.006024][  T227] R13: ffff88800bd6a128 R14: ffff88800bd6a008 R15: ffff88800bd6a000
[  145.006569][  T227] FS:  00007f676eb5c740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  145.007036][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  145.007335][  T227] CR2: 000055ca8e7e15e8 CR3: 000000000b89e005 CR4: 0000000000772ef0
[  145.007625][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  145.007911][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  145.008206][  T227] PKRU: 55555554
[  145.008358][  T227] Call Trace:
[  145.008512][  T227]  <TASK>
[ 145.008619][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 145.008818][ T227] ? __warn (kernel/panic.c:748) 
[ 145.008976][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 145.009190][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 145.009395][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 145.009548][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 145.009747][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 145.009958][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 145.010175][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 145.010421][ T227] ? _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) 
[ 145.010622][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 145.010823][ T227] register_netdevice (net/core/dev.c:11003) 
[ 145.011027][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 145.011267][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 145.011482][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 145.011734][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 145.012009][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 145.012276][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 145.012482][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 145.012705][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 145.012966][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 145.013174][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 145.013379][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 145.013580][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 145.013789][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 145.013958][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 145.014173][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 145.014383][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 145.014597][ T227] ksys_write (fs/read_write.c:731) 
[ 145.014758][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 145.014968][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 145.015181][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  145.015423][  T227] RIP: 0033:0x7f676ec9db77
[ 145.015632][ T227] 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
[  145.016306][  T227] RSP: 002b:00007ffda8ab32d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  145.016595][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f676ec9db77
[  145.016885][  T227] RDX: 0000000000000002 RSI: 000055ca8e9a5130 RDI: 0000000000000001
[  145.017186][  T227] RBP: 000055ca8e9a5130 R08: 0000000000000000 R09: 00007f676ed104e0
[  145.017472][  T227] R10: 00007f676ed103e0 R11: 0000000000000246 R12: 0000000000000002
[  145.017759][  T227] R13: 00007f676ed59760 R14: 0000000000000002 R15: 00007f676ed549c0
| [  146.513571][  T227] ------------[ cut here ]------------
| [ 146.513860][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  146.514281][  T227] Modules linked in: netdevsim
| [  146.514883][  T227] Tainted: [W]=WARN
[  146.515044][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 146.515302][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 146.515559][ T227] 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
[  146.516223][  T227] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  146.516481][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  146.516778][  T227] RDX: 0000000000000000 RSI: ffff88800a812c98 RDI: ffff8880093ad0a8
[  146.517079][  T227] RBP: ffffffff8c123440 R08: 0000000000000000 R09: fffffbfff13fd83c
[  146.517368][  T227] R10: ffffffff89fec1e7 R11: ffff8880093ac5c0 R12: 0000000000000000
[  146.517658][  T227] R13: ffff88800a812128 R14: ffff88800a812008 R15: ffff88800a812000
[  146.517948][  T227] FS:  00007f676eb5c740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  146.518301][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  146.518548][  T227] CR2: 000055ca8e7ee018 CR3: 000000000b89e005 CR4: 0000000000772ef0
[  146.518838][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  146.519136][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  146.519428][  T227] PKRU: 55555554
[  146.519582][  T227] Call Trace:
[  146.519738][  T227]  <TASK>
[ 146.519848][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 146.520045][ T227] ? __warn (kernel/panic.c:748) 
[ 146.520221][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 146.520422][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 146.520631][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 146.520792][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 146.520992][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 146.521218][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 146.521430][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 146.521681][ T227] ? _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) 
[ 146.521886][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 146.522102][ T227] register_netdevice (net/core/dev.c:11003) 
[ 146.522314][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 146.522525][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 146.522760][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 146.523019][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 146.523300][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 146.523556][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 146.523768][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 146.523979][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 146.524242][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 146.524441][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 146.524641][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 146.524846][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 146.525050][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 146.525230][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 146.525433][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 146.525646][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 146.525855][ T227] ksys_write (fs/read_write.c:731) 
[ 146.526008][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 146.526229][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 146.526433][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  146.526678][  T227] RIP: 0033:0x7f676ec9db77
[ 146.526886][ T227] 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
[  146.527543][  T227] RSP: 002b:00007ffda8ab32d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  146.527833][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f676ec9db77
[  146.528134][  T227] RDX: 0000000000000002 RSI: 000055ca8e9a5130 RDI: 0000000000000001
[  146.528420][  T227] RBP: 000055ca8e9a5130 R08: 0000000000000000 R09: 00007f676ed104e0
[  146.528709][  T227] R10: 00007f676ed103e0 R11: 0000000000000246 R12: 0000000000000002
[  146.529001][  T227] R13: 00007f676ed59760 R14: 0000000000000002 R15: 00007f676ed549c0
| [  147.991663][  T227] ------------[ cut here ]------------
| [ 147.991930][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  147.992346][  T227] Modules linked in: netdevsim
| [  147.993009][  T227] Tainted: [W]=WARN
[  147.993181][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 147.993425][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 147.993673][ T227] 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
[  147.994330][  T227] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  147.994576][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  147.994860][  T227] RDX: 0000000000000000 RSI: ffff88800bf42c98 RDI: ffff8880093ad0a8
[  147.995162][  T227] RBP: ffffffff8c123440 R08: 0000000000000000 R09: fffffbfff13fd83c
[  147.995445][  T227] R10: ffffffff89fec1e7 R11: ffff8880093ac5c0 R12: 0000000000000000
[  147.995727][  T227] R13: ffff88800bf42128 R14: ffff88800bf42008 R15: ffff88800bf42000
[  147.996012][  T227] FS:  00007f676eb5c740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  147.996354][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  147.996597][  T227] CR2: 000055ca8e7bc47c CR3: 000000000b89e001 CR4: 0000000000772ef0
[  147.996885][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  147.997180][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  147.997467][  T227] PKRU: 55555554
[  147.997622][  T227] Call Trace:
[  147.997778][  T227]  <TASK>
[ 147.997887][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 147.998096][ T227] ? __warn (kernel/panic.c:748) 
[ 147.998256][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 147.998456][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 147.998666][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 147.998832][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 147.999031][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 147.999253][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 147.999462][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 147.999712][ T227] ? _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) 
[ 147.999935][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 148.000152][ T227] register_netdevice (net/core/dev.c:11003) 
[ 148.000361][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 148.000571][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 148.000786][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 148.001050][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 148.001331][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 148.001591][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 148.001809][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 148.002023][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 148.003122][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 148.003498][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 148.003868][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 148.004174][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 148.004483][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 148.004719][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 148.004995][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 148.005356][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 148.005724][ T227] ksys_write (fs/read_write.c:731) 
[ 148.006030][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 148.006418][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 148.006725][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  148.006988][  T227] RIP: 0033:0x7f676ec9db77
[ 148.007213][ T227] 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
[  148.007858][  T227] RSP: 002b:00007ffda8ab32d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  148.008164][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f676ec9db77
[  148.008456][  T227] RDX: 0000000000000002 RSI: 000055ca8e9a5130 RDI: 0000000000000001
[  148.008744][  T227] RBP: 000055ca8e9a5130 R08: 0000000000000000 R09: 00007f676ed104e0
[  148.009037][  T227] R10: 00007f676ed103e0 R11: 0000000000000246 R12: 0000000000000002
[  148.009335][  T227] R13: 00007f676ed59760 R14: 0000000000000002 R15: 00007f676ed549c0
| [  149.490662][  T227] ------------[ cut here ]------------
| [ 149.491051][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  149.491476][  T227] Modules linked in: netdevsim
| [  149.492107][  T227] Tainted: [W]=WARN
[  149.492273][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 149.492520][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 149.492794][ T227] 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
[  149.493459][  T227] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  149.493715][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  149.494005][  T227] RDX: 0000000000000000 RSI: ffff888009622c98 RDI: ffff8880093ad0a8
[  149.494309][  T227] RBP: ffffffff8c123440 R08: 0000000000000000 R09: fffffbfff13fd83c
[  149.494606][  T227] R10: ffffffff89fec1e7 R11: ffff8880093ac5c0 R12: 0000000000000000
[  149.494897][  T227] R13: ffff888009622128 R14: ffff888009622008 R15: ffff888009622000
[  149.495205][  T227] FS:  00007f676eb5c740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  149.495544][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  149.495809][  T227] CR2: 000055ca8e97bde8 CR3: 000000000b89e001 CR4: 0000000000772ef0
[  149.496122][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  149.496438][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  149.496740][  T227] PKRU: 55555554
[  149.496899][  T227] Call Trace:
[  149.497071][  T227]  <TASK>
[ 149.497188][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 149.497391][ T227] ? __warn (kernel/panic.c:748) 
[ 149.497557][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 149.497763][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 149.497979][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 149.498151][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 149.498357][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 149.498574][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 149.498785][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 149.499033][ T227] ? _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) 
[ 149.499252][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 149.499465][ T227] register_netdevice (net/core/dev.c:11003) 
[ 149.499675][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 149.499888][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 149.500128][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 149.500388][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 149.500661][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 149.500927][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 149.501149][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 149.501365][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 149.501629][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 149.501835][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 149.502036][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 149.502253][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 149.502465][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 149.502643][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 149.502866][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 149.503115][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 149.503333][ T227] ksys_write (fs/read_write.c:731) 
[ 149.503495][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 149.503709][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 149.503921][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  149.504186][  T227] RIP: 0033:0x7f676ec9db77
[ 149.504401][ T227] 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
[  149.505082][  T227] RSP: 002b:00007ffda8ab32d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  149.505386][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f676ec9db77
[  149.505680][  T227] RDX: 0000000000000002 RSI: 000055ca8e9a5130 RDI: 0000000000000001
[  149.505973][  T227] RBP: 000055ca8e9a5130 R08: 0000000000000000 R09: 00007f676ed104e0
[  149.506281][  T227] R10: 00007f676ed103e0 R11: 0000000000000246 R12: 0000000000000002
[  149.506578][  T227] R13: 00007f676ed59760 R14: 0000000000000002 R15: 00007f676ed549c0
| [  151.043344][  T227] ------------[ cut here ]------------
| [ 151.043807][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  151.044482][  T227] Modules linked in: netdevsim
| [  151.045477][  T227] Tainted: [W]=WARN
[  151.045740][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 151.046162][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 151.046582][ T227] 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
[  151.047662][  T227] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  151.048046][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  151.048707][  T227] RDX: 0000000000000000 RSI: ffff8880097a2c98 RDI: ffff8880093ad0a8
[  151.049336][  T227] RBP: ffffffff8c123440 R08: 0000000000000000 R09: fffffbfff13fd83c
[  151.049963][  T227] R10: ffffffff89fec1e7 R11: ffff8880093ac5c0 R12: 0000000000000000
[  151.050521][  T227] R13: ffff8880097a2128 R14: ffff8880097a2008 R15: ffff8880097a2000
[  151.050992][  T227] FS:  00007f676eb5c740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  151.051560][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  151.051975][  T227] CR2: 00007f92d32ed1a0 CR3: 000000000b89e004 CR4: 0000000000772ef0
[  151.052481][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  151.052971][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  151.053471][  T227] PKRU: 55555554
[  151.053730][  T227] Call Trace:
[  151.054000][  T227]  <TASK>
[ 151.054199][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 151.054535][ T227] ? __warn (kernel/panic.c:748) 
[ 151.054803][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 151.055159][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 151.055490][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 151.055761][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 151.056111][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 151.056474][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 151.056834][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 151.057270][ T227] ? _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) 
[ 151.057634][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 151.057978][ T227] register_netdevice (net/core/dev.c:11003) 
[ 151.058342][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 151.058703][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 151.059101][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 151.059543][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 151.060003][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 151.060447][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 151.060783][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 151.061150][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 151.061571][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 151.061912][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 151.062262][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 151.062697][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 151.062934][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 151.063127][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 151.063337][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 151.063556][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 151.063769][ T227] ksys_write (fs/read_write.c:731) 
[ 151.063931][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 151.064155][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 151.064374][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  151.064629][  T227] RIP: 0033:0x7f676ec9db77
[ 151.064847][ T227] 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
[  151.065543][  T227] RSP: 002b:00007ffda8ab32d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  151.065846][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f676ec9db77
[  151.066169][  T227] RDX: 0000000000000002 RSI: 000055ca8e9a5130 RDI: 0000000000000001
[  151.066472][  T227] RBP: 000055ca8e9a5130 R08: 0000000000000000 R09: 00007f676ed104e0
[  151.066774][  T227] R10: 00007f676ed103e0 R11: 0000000000000246 R12: 0000000000000002
[  151.067090][  T227] R13: 00007f676ed59760 R14: 0000000000000002 R15: 00007f676ed549c0
| [  152.638314][  T227] ------------[ cut here ]------------
| [ 152.638646][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  152.639151][  T227] Modules linked in: netdevsim
| [  152.639828][  T227] Tainted: [W]=WARN
[  152.639998][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 152.640294][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 152.640573][ T227] 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
[  152.641301][  T227] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  152.641573][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  152.641892][  T227] RDX: 0000000000000000 RSI: ffff88800211ac98 RDI: ffff8880093ad0a8
[  152.642226][  T227] RBP: ffffffff8c123440 R08: 0000000000000000 R09: fffffbfff13fd83c
[  152.642555][  T227] R10: ffffffff89fec1e7 R11: ffff8880093ac5c0 R12: 0000000000000000
[  152.642885][  T227] R13: ffff88800211a128 R14: ffff88800211a008 R15: ffff88800211a000
[  152.643220][  T227] FS:  00007f676eb5c740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  152.643593][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  152.643866][  T227] CR2: 000055ca8e7bc47c CR3: 000000000b89e004 CR4: 0000000000772ef0
[  152.644203][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  152.644536][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  152.644849][  T227] PKRU: 55555554
[  152.645023][  T227] Call Trace:
[  152.645207][  T227]  <TASK>
[ 152.645328][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 152.645550][ T227] ? __warn (kernel/panic.c:748) 
[ 152.645736][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 152.645962][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 152.646204][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 152.646389][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 152.646609][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 152.646846][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 152.647094][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 152.647373][ T227] ? _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) 
[ 152.647601][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 152.647825][ T227] register_netdevice (net/core/dev.c:11003) 
[ 152.648067][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 152.648300][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 152.648549][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 152.648830][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 152.649135][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 152.649422][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 152.649652][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 152.649879][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 152.650168][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 152.650384][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 152.650608][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 152.650830][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 152.651076][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 152.651255][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 152.651487][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 152.651722][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 152.651952][ T227] ksys_write (fs/read_write.c:731) 
[ 152.652133][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 152.652369][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 152.652605][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  152.652878][  T227] RIP: 0033:0x7f676ec9db77
[ 152.653118][ T227] 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
[  152.653839][  T227] RSP: 002b:00007ffda8ab32d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  152.654177][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f676ec9db77
[  152.654495][  T227] RDX: 0000000000000002 RSI: 000055ca8e9a5130 RDI: 0000000000000001
[  152.654814][  T227] RBP: 000055ca8e9a5130 R08: 0000000000000000 R09: 00007f676ed104e0
[  152.655145][  T227] R10: 00007f676ed103e0 R11: 0000000000000246 R12: 0000000000000002
[  152.655461][  T227] R13: 00007f676ed59760 R14: 0000000000000002 R15: 00007f676ed549c0
| [  156.970699][  T227] ------------[ cut here ]------------
| [ 156.971080][ T227] WARNING: CPU: 1 PID: 227 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) 
| [  156.971471][  T227] Modules linked in: netdevsim
| [  156.972139][  T227] Tainted: [W]=WARN
[  156.972283][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 156.972524][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 156.972773][ T227] 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
[  156.973452][  T227] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  156.973696][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  156.973974][  T227] RDX: 0000000000000000 RSI: ffff888005272c98 RDI: ffff8880093ad0a8
[  156.974255][  T227] RBP: ffffffff8c123440 R08: 0000000000000000 R09: fffffbfff13fd83c
[  156.974527][  T227] R10: ffffffff89fec1e7 R11: ffff8880093ac5c0 R12: 0000000000000000
[  156.974793][  T227] R13: ffff888005272128 R14: ffff888005272008 R15: ffff888005272000
[  156.975086][  T227] FS:  00007f676eb5c740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  156.975413][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  156.975644][  T227] CR2: 00007f676ec55890 CR3: 000000000b89e002 CR4: 0000000000772ef0
[  156.975918][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  156.976196][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  156.976472][  T227] PKRU: 55555554
[  156.976610][  T227] Call Trace:
[  156.976750][  T227]  <TASK>
[ 156.976848][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 156.977036][ T227] ? __warn (kernel/panic.c:748) 
[ 156.977191][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 156.977390][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 156.977583][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 156.977729][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 156.977915][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 156.978127][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 156.978325][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 156.978564][ T227] ? _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) 
[ 156.978756][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 156.978949][ T227] register_netdevice (net/core/dev.c:11003) 
[ 156.979156][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 156.979360][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 156.979565][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 156.979808][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 156.980075][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 156.980317][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 156.980511][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 156.980706][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 156.980949][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 156.981142][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 156.981332][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 156.981528][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 156.981733][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 156.981886][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 156.982111][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 156.982317][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 156.982534][ T227] ksys_write (fs/read_write.c:731) 
[ 156.982692][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 156.982900][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 156.983096][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  156.983332][  T227] RIP: 0033:0x7f676ec9db77
[ 156.983540][ T227] 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
[  156.984219][  T227] RSP: 002b:00007ffda8ab2a38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  156.984509][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f676ec9db77
[  156.984790][  T227] RDX: 0000000000000002 RSI: 000055ca8e9a5130 RDI: 0000000000000001
[  156.985075][  T227] RBP: 000055ca8e9a5130 R08: 0000000000000000 R09: 00007f676ed104e0
[  156.985356][  T227] R10: 00007f676ed103e0 R11: 0000000000000246 R12: 0000000000000002
[  156.985652][  T227] R13: 00007f676ed59760 R14: 0000000000000002 R15: 00007f676ed549c0
| [  158.593046][  T227] ------------[ cut here ]------------
| [ 158.593390][ T227] WARNING: CPU: 3 PID: 227 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) 
| [  158.593867][  T227] Modules linked in: netdevsim
| [  158.594554][  T227] Tainted: [W]=WARN
[  158.594705][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 158.594946][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 158.595298][ T227] 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
[  158.596023][  T227] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  158.596338][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  158.596612][  T227] RDX: 0000000000000000 RSI: ffff88800bd6ac98 RDI: ffff8880093ad0a8
[  158.596901][  T227] RBP: ffffffff8c123440 R08: 0000000000000000 R09: fffffbfff13fd83c
[  158.597268][  T227] R10: ffffffff89fec1e7 R11: ffff8880093ac5c0 R12: 0000000000000000
[  158.597550][  T227] R13: ffff88800bd6a128 R14: ffff88800bd6a008 R15: ffff88800bd6a000
[  158.597850][  T227] FS:  00007f676eb5c740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  158.598274][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  158.598533][  T227] CR2: 000055ca8e840408 CR3: 000000000b89e001 CR4: 0000000000772ef0
[  158.598826][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  158.599206][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  158.599501][  T227] PKRU: 55555554
[  158.599653][  T227] Call Trace:
[  158.599800][  T227]  <TASK>
[ 158.599900][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 158.600271][ T227] ? __warn (kernel/panic.c:748) 
[ 158.600428][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 158.600630][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 158.600824][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 158.600980][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 158.601347][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 158.601559][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 158.601770][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 158.602026][ T227] ? _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) 
[ 158.602397][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 158.602616][ T227] register_netdevice (net/core/dev.c:11003) 
[ 158.602831][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 158.603032][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 158.603407][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 158.603668][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 158.603927][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 158.604340][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 158.604551][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 158.604761][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 158.605019][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 158.605295][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 158.605488][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 158.605691][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 158.605883][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 158.606045][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 158.606338][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 158.606539][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 158.606733][ T227] ksys_write (fs/read_write.c:731) 
[ 158.606877][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 158.607171][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 158.607364][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  158.607595][  T227] RIP: 0033:0x7f676ec9db77
[ 158.607795][ T227] 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
[  158.608464][  T227] RSP: 002b:00007ffda8ab2a38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  158.608753][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f676ec9db77
[  158.609039][  T227] RDX: 0000000000000002 RSI: 000055ca8e9a5130 RDI: 0000000000000001
[  158.609334][  T227] RBP: 000055ca8e9a5130 R08: 0000000000000000 R09: 00007f676ed104e0
[  158.609619][  T227] R10: 00007f676ed103e0 R11: 0000000000000246 R12: 0000000000000002
[  158.609904][  T227] R13: 00007f676ed59760 R14: 0000000000000002 R15: 00007f676ed549c0
| [  160.211559][  T227] ------------[ cut here ]------------
| [ 160.211868][ T227] WARNING: CPU: 1 PID: 227 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) 
| [  160.212894][  T227] Modules linked in: netdevsim
| [  160.213661][  T227] Tainted: [W]=WARN
[  160.213804][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 160.214034][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 160.214285][ T227] 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
[  160.214970][  T227] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  160.215226][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  160.215501][  T227] RDX: 0000000000000000 RSI: ffff88800ba22c98 RDI: ffff8880093ad0a8
[  160.215788][  T227] RBP: ffffffff8c123440 R08: 0000000000000000 R09: fffffbfff13fd83c
[  160.216072][  T227] R10: ffffffff89fec1e7 R11: ffff8880093ac5c0 R12: 0000000000000000
[  160.216348][  T227] R13: ffff88800ba22128 R14: ffff88800ba22008 R15: ffff88800ba22000
[  160.216708][  T227] FS:  00007f676eb5c740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  160.217031][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  160.217274][  T227] CR2: 000055ca8e84a088 CR3: 000000000b89e002 CR4: 0000000000772ef0
[  160.217553][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  160.217828][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  160.218131][  T227] PKRU: 55555554
[  160.218278][  T227] Call Trace:
[  160.218418][  T227]  <TASK>
[ 160.218515][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 160.218707][ T227] ? __warn (kernel/panic.c:748) 
[ 160.218857][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 160.219044][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 160.219249][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 160.219398][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 160.219589][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 160.219796][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 160.219989][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 160.220236][ T227] ? _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) 
[ 160.220431][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 160.220623][ T227] register_netdevice (net/core/dev.c:11003) 
[ 160.220812][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 160.221012][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 160.221227][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 160.221469][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 160.221724][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 160.221963][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 160.222161][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 160.222363][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 160.222626][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 160.222811][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 160.222996][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 160.223197][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 160.223392][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 160.223543][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 160.223738][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 160.223940][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 160.224145][ T227] ksys_write (fs/read_write.c:731) 
[ 160.224291][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 160.224489][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 160.224681][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  160.224910][  T227] RIP: 0033:0x7f676ec9db77
[ 160.225114][ T227] 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
[  160.225784][  T227] RSP: 002b:00007ffda8ab2a38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  160.226079][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f676ec9db77
[  160.226354][  T227] RDX: 0000000000000002 RSI: 000055ca8e9a5130 RDI: 0000000000000001
[  160.226633][  T227] RBP: 000055ca8e9a5130 R08: 0000000000000000 R09: 00007f676ed104e0
[  160.226906][  T227] R10: 00007f676ed103e0 R11: 0000000000000246 R12: 0000000000000002
[  160.227191][  T227] R13: 00007f676ed59760 R14: 0000000000000002 R15: 00007f676ed549c0
| [  161.820293][  T227] ------------[ cut here ]------------
| [ 161.820630][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  161.821039][  T227] Modules linked in: netdevsim
| [  161.821693][  T227] Tainted: [W]=WARN
[  161.821862][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 161.822135][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 161.822391][ T227] 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
[  161.823192][  T227] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  161.823447][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  161.823754][  T227] RDX: 0000000000000000 RSI: ffff88800a812c98 RDI: ffff8880093ad0a8
[  161.824056][  T227] RBP: ffffffff8c123440 R08: 0000000000000000 R09: fffffbfff13fd83c
[  161.824361][  T227] R10: ffffffff89fec1e7 R11: ffff8880093ac5c0 R12: 0000000000000000
[  161.824663][  T227] R13: ffff88800a812128 R14: ffff88800a812008 R15: ffff88800a812000
[  161.824971][  T227] FS:  00007f676eb5c740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  161.825319][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  161.825568][  T227] CR2: 0000563620d2e740 CR3: 000000000b89e001 CR4: 0000000000772ef0
[  161.825945][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  161.826259][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  161.826547][  T227] PKRU: 55555554
[  161.826698][  T227] Call Trace:
[  161.826850][  T227]  <TASK>
[ 161.826971][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 161.827178][ T227] ? __warn (kernel/panic.c:748) 
[ 161.827351][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 161.827552][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 161.827776][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 161.827932][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 161.828151][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 161.828373][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 161.828588][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 161.828847][ T227] ? _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) 
[ 161.829052][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 161.829291][ T227] register_netdevice (net/core/dev.c:11003) 
[ 161.829501][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 161.829727][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 161.829949][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 161.830228][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 161.830509][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 161.830779][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 161.830979][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 161.831201][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 161.831454][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 161.831652][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 161.831852][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 161.832073][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 161.832285][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 161.832463][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 161.832676][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 161.832890][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 161.833117][ T227] ksys_write (fs/read_write.c:731) 
[ 161.833277][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 161.833501][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 161.833739][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  161.833995][  T227] RIP: 0033:0x7f676ec9db77
[ 161.834218][ T227] 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
[  161.834875][  T227] RSP: 002b:00007ffda8ab2a38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  161.835185][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f676ec9db77
[  161.835477][  T227] RDX: 0000000000000002 RSI: 000055ca8e9a5130 RDI: 0000000000000001
[  161.835761][  T227] RBP: 000055ca8e9a5130 R08: 0000000000000000 R09: 00007f676ed104e0
[  161.836052][  T227] R10: 00007f676ed103e0 R11: 0000000000000246 R12: 0000000000000002
[  161.836357][  T227] R13: 00007f676ed59760 R14: 0000000000000002 R15: 00007f676ed549c0
| [  163.387750][  T227] ------------[ cut here ]------------
| [ 163.388039][ T227] WARNING: CPU: 1 PID: 227 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) 
| [  163.388457][  T227] Modules linked in: netdevsim
| [  163.389025][  T227] Tainted: [W]=WARN
[  163.389176][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 163.389409][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 163.389644][ T227] 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
[  163.390299][  T227] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  163.390536][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  163.390815][  T227] RDX: 0000000000000000 RSI: ffff888009622c98 RDI: ffff8880093ad0a8
[  163.391100][  T227] RBP: ffffffff8c123440 R08: 0000000000000000 R09: fffffbfff13fd83c
[  163.391377][  T227] R10: ffffffff89fec1e7 R11: ffff8880093ac5c0 R12: 0000000000000000
[  163.391654][  T227] R13: ffff888009622128 R14: ffff888009622008 R15: ffff888009622000
[  163.391928][  T227] FS:  00007f676eb5c740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  163.392355][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  163.392615][  T227] CR2: 000055ca8e987258 CR3: 000000000b89e006 CR4: 0000000000772ef0
[  163.392973][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  163.393260][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  163.393529][  T227] PKRU: 55555554
[  163.393669][  T227] Call Trace:
[  163.393812][  T227]  <TASK>
[ 163.393911][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 163.394112][ T227] ? __warn (kernel/panic.c:748) 
[ 163.394275][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 163.394463][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 163.394660][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 163.394806][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 163.394992][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 163.395203][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 163.395403][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 163.395638][ T227] ? _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) 
[ 163.395833][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 163.396026][ T227] register_netdevice (net/core/dev.c:11003) 
[ 163.396225][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 163.396422][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 163.396628][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 163.396871][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 163.397133][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 163.397375][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 163.397574][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 163.397770][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 163.398011][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 163.398204][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 163.398394][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 163.398588][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 163.398781][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 163.398931][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 163.399129][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 163.399334][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 163.399530][ T227] ksys_write (fs/read_write.c:731) 
[ 163.399678][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 163.399877][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 163.400076][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  163.400314][  T227] RIP: 0033:0x7f676ec9db77
[ 163.400506][ T227] 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
[  163.401160][  T227] RSP: 002b:00007ffda8ab2a38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  163.401442][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f676ec9db77
[  163.401719][  T227] RDX: 0000000000000002 RSI: 000055ca8e9a5130 RDI: 0000000000000001
[  163.401994][  T227] RBP: 000055ca8e9a5130 R08: 0000000000000000 R09: 00007f676ed104e0
[  163.402277][  T227] R10: 00007f676ed103e0 R11: 0000000000000246 R12: 0000000000000002
[  163.402561][  T227] R13: 00007f676ed59760 R14: 0000000000000002 R15: 00007f676ed549c0
| [  164.954657][  T227] ------------[ cut here ]------------
| [ 164.955030][ T227] WARNING: CPU: 1 PID: 227 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) 
| [  164.955441][  T227] Modules linked in: netdevsim
| [  164.956107][  T227] Tainted: [W]=WARN
[  164.956253][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 164.956533][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 164.956778][ T227] 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
[  164.957517][  T227] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  164.957752][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  164.958036][  T227] RDX: 0000000000000000 RSI: ffff8880097a2c98 RDI: ffff8880093ad0a8
[  164.958460][  T227] RBP: ffffffff8c123440 R08: 0000000000000000 R09: fffffbfff13fd83c
[  164.958736][  T227] R10: ffffffff89fec1e7 R11: ffff8880093ac5c0 R12: 0000000000000000
[  164.959021][  T227] R13: ffff8880097a2128 R14: ffff8880097a2008 R15: ffff8880097a2000
[  164.959390][  T227] FS:  00007f676eb5c740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  164.959714][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  164.959952][  T227] CR2: 00007f676ec55890 CR3: 000000000b89e006 CR4: 0000000000772ef0
[  164.960313][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  164.960589][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  164.960866][  T227] PKRU: 55555554
[  164.961007][  T227] Call Trace:
[  164.961231][  T227]  <TASK>
[ 164.961328][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 164.961515][ T227] ? __warn (kernel/panic.c:748) 
[ 164.961663][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 164.961874][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 164.962156][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 164.962305][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 164.962499][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 164.962702][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 164.962897][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 164.963236][ T227] ? _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) 
[ 164.963447][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 164.963644][ T227] register_netdevice (net/core/dev.c:11003) 
[ 164.963856][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 164.964103][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 164.964400][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 164.964661][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 164.964923][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 164.965188][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 164.965379][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 164.965576][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 164.965822][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 164.966005][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 164.966206][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 164.966415][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 164.966619][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 164.966782][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 164.966977][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 164.967193][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 164.967402][ T227] ksys_write (fs/read_write.c:731) 
[ 164.967546][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 164.967746][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 164.967937][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  164.968174][  T227] RIP: 0033:0x7f676ec9db77
[ 164.968365][ T227] 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
[  164.969001][  T227] RSP: 002b:00007ffda8ab2a38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  164.969310][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f676ec9db77
[  164.969606][  T227] RDX: 0000000000000002 RSI: 000055ca8e9a5130 RDI: 0000000000000001
[  164.969899][  T227] RBP: 000055ca8e9a5130 R08: 0000000000000000 R09: 00007f676ed104e0
[  164.970203][  T227] R10: 00007f676ed103e0 R11: 0000000000000246 R12: 0000000000000002
[  164.970488][  T227] R13: 00007f676ed59760 R14: 0000000000000002 R15: 00007f676ed549c0
| [  166.544406][  T227] ------------[ cut here ]------------
| [ 166.544739][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  166.545166][  T227] Modules linked in: netdevsim
| [  166.545793][  T227] Tainted: [W]=WARN
[  166.545951][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 166.546229][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 166.546495][ T227] 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
[  166.547211][  T227] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  166.547472][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  166.547765][  T227] RDX: 0000000000000000 RSI: ffff88800bf42c98 RDI: ffff8880093ad0a8
[  166.548207][  T227] RBP: ffffffff8c123440 R08: 0000000000000000 R09: fffffbfff13fd83c
[  166.548511][  T227] R10: ffffffff89fec1e7 R11: ffff8880093ac5c0 R12: 0000000000000000
[  166.548803][  T227] R13: ffff88800bf42128 R14: ffff88800bf42008 R15: ffff88800bf42000
[  166.549119][  T227] FS:  00007f676eb5c740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  166.549456][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  166.549700][  T227] CR2: 00007f676ec55890 CR3: 000000000b89e002 CR4: 0000000000772ef0
[  166.549996][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  166.550297][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  166.550591][  T227] PKRU: 55555554
[  166.550747][  T227] Call Trace:
[  166.550903][  T227]  <TASK>
[ 166.551013][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 166.551237][ T227] ? __warn (kernel/panic.c:748) 
[ 166.551406][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 166.551610][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 166.551823][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 166.551988][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 166.552323][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 166.552703][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 166.553047][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 166.553505][ T227] ? _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) 
[ 166.553856][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 166.554219][ T227] register_netdevice (net/core/dev.c:11003) 
[ 166.554555][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 166.554929][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 166.555337][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 166.555787][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 166.556266][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 166.556703][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 166.557034][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 166.557411][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 166.557829][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 166.558182][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 166.558525][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 166.558872][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 166.559234][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 166.559502][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 166.559836][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 166.560192][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 166.560544][ T227] ksys_write (fs/read_write.c:731) 
[ 166.560809][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 166.561182][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 166.561529][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  166.561925][  T227] RIP: 0033:0x7f676ec9db77
[ 166.562292][ T227] 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
[  166.563441][  T227] RSP: 002b:00007ffda8ab2a38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  166.566851][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f676ec9db77
[  166.567268][  T227] RDX: 0000000000000002 RSI: 000055ca8e9a5130 RDI: 0000000000000001
[  166.567565][  T227] RBP: 000055ca8e9a5130 R08: 0000000000000000 R09: 00007f676ed104e0
[  166.567856][  T227] R10: 00007f676ed103e0 R11: 0000000000000246 R12: 0000000000000002
[  166.568280][  T227] R13: 00007f676ed59760 R14: 0000000000000002 R15: 00007f676ed549c0
| [  168.205097][  T227] ------------[ cut here ]------------
| [ 168.205412][ T227] WARNING: CPU: 0 PID: 227 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) 
| [  168.205787][  T227] Modules linked in: netdevsim
| [  168.206398][  T227] Tainted: [W]=WARN
[  168.206545][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 168.206788][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 168.207028][ T227] 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
[  168.207693][  T227] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  168.207932][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  168.208227][  T227] RDX: 0000000000000000 RSI: ffff88800211ac98 RDI: ffff8880093ad0a8
[  168.208507][  T227] RBP: ffffffff8c123440 R08: 0000000000000000 R09: fffffbfff13fd83c
[  168.208789][  T227] R10: ffffffff89fec1e7 R11: ffff8880093ac5c0 R12: 0000000000000000
[  168.209076][  T227] R13: ffff88800211a128 R14: ffff88800211a008 R15: ffff88800211a000
[  168.209358][  T227] FS:  00007f676eb5c740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  168.209677][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  168.209915][  T227] CR2: 000055ca8e840408 CR3: 000000000b89e005 CR4: 0000000000772ef0
[  168.210323][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  168.210605][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  168.210881][  T227] PKRU: 55555554
[  168.211024][  T227] Call Trace:
[  168.211180][  T227]  <TASK>
[ 168.211278][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 168.211468][ T227] ? __warn (kernel/panic.c:748) 
[ 168.211617][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 168.211819][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 168.212017][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 168.212171][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 168.212357][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 168.212567][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 168.212783][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 168.213025][ T227] ? _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) 
[ 168.213225][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 168.213420][ T227] register_netdevice (net/core/dev.c:11003) 
[ 168.213617][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 168.213856][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 168.214074][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 168.214321][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 168.214589][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 168.214832][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 168.215036][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 168.215251][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 168.215497][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 168.215683][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 168.215879][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 168.216089][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 168.216285][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 168.216441][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 168.216641][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 168.216850][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 168.217079][ T227] ksys_write (fs/read_write.c:731) 
[ 168.217229][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 168.217431][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 168.217625][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  168.217869][  T227] RIP: 0033:0x7f676ec9db77
[ 168.218085][ T227] 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
[  168.218738][  T227] RSP: 002b:00007ffda8ab2a38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  168.219020][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f676ec9db77
[  168.219321][  T227] RDX: 0000000000000002 RSI: 000055ca8e9a5130 RDI: 0000000000000001
[  168.219599][  T227] RBP: 000055ca8e9a5130 R08: 0000000000000000 R09: 00007f676ed104e0
[  168.219868][  T227] R10: 00007f676ed103e0 R11: 0000000000000246 R12: 0000000000000002
[  168.220150][  T227] R13: 00007f676ed59760 R14: 0000000000000002 R15: 00007f676ed549c0
| [  169.832186][  T227] ------------[ cut here ]------------
| [ 169.832561][ T227] WARNING: CPU: 1 PID: 227 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) 
| [  169.832934][  T227] Modules linked in: netdevsim
| [  169.833521][  T227] Tainted: [W]=WARN
[  169.833666][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 169.833894][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 169.834136][ T227] 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
[  169.834780][  T227] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  169.835108][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  169.835383][  T227] RDX: 0000000000000000 RSI: ffff888005272c98 RDI: ffff8880093ad0a8
[  169.835666][  T227] RBP: ffffffff8c123440 R08: 0000000000000000 R09: fffffbfff13fd83c
[  169.835945][  T227] R10: ffffffff89fec1e7 R11: ffff8880093ac5c0 R12: 0000000000000000
[  169.837186][  T227] R13: ffff888005272128 R14: ffff888005272008 R15: ffff888005272000
[  169.837468][  T227] FS:  00007f676eb5c740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  169.837787][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  169.838026][  T227] CR2: 00007f92d356a9d0 CR3: 000000000b89e003 CR4: 0000000000772ef0
[  169.838311][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  169.838593][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  169.838871][  T227] PKRU: 55555554
[  169.839016][  T227] Call Trace:
[  169.839167][  T227]  <TASK>
[ 169.839266][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 169.839455][ T227] ? __warn (kernel/panic.c:748) 
[ 169.839605][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 169.839794][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 169.839988][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 169.840152][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 169.840340][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 169.840540][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 169.840740][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 169.840978][ T227] ? _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) 
[ 169.841180][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 169.841374][ T227] register_netdevice (net/core/dev.c:11003) 
[ 169.841571][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 169.841771][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 169.841975][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 169.842227][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 169.842494][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 169.842740][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 169.842933][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 169.843138][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 169.843381][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 169.843573][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 169.843765][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 169.843958][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 169.844167][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 169.844320][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 169.844511][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 169.844714][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 169.844966][ T227] ksys_write (fs/read_write.c:731) 
[ 169.845123][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 169.845319][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 169.845505][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  169.845735][  T227] RIP: 0033:0x7f676ec9db77
[ 169.845924][ T227] 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
[  169.846563][  T227] RSP: 002b:00007ffda8ab2a38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  169.846839][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f676ec9db77
[  169.847119][  T227] RDX: 0000000000000002 RSI: 000055ca8e9a5130 RDI: 0000000000000001
[  169.847396][  T227] RBP: 000055ca8e9a5130 R08: 0000000000000000 R09: 00007f676ed104e0
[  169.847667][  T227] R10: 00007f676ed103e0 R11: 0000000000000246 R12: 0000000000000002
[  169.847941][  T227] R13: 00007f676ed59760 R14: 0000000000000002 R15: 00007f676ed549c0
| [  171.422792][  T227] ------------[ cut here ]------------
| [ 171.423184][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  171.423601][  T227] Modules linked in: netdevsim
| [  171.424406][  T227] Tainted: [W]=WARN
[  171.424572][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 171.424820][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 171.425093][ T227] 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
[  171.425794][  T227] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  171.426074][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  171.426369][  T227] RDX: 0000000000000000 RSI: ffff88800bd6ac98 RDI: ffff8880093ad0a8
[  171.426778][  T227] RBP: ffffffff8c123440 R08: 0000000000000000 R09: fffffbfff13fd83c
[  171.427102][  T227] R10: ffffffff89fec1e7 R11: ffff8880093ac5c0 R12: 0000000000000000
[  171.427405][  T227] R13: ffff88800bd6a128 R14: ffff88800bd6a008 R15: ffff88800bd6a000
[  171.427702][  T227] FS:  00007f676eb5c740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  171.428043][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  171.428306][  T227] CR2: 00007f676ec55890 CR3: 000000000b89e001 CR4: 0000000000772ef0
[  171.428605][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  171.428906][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  171.429213][  T227] PKRU: 55555554
[  171.429400][  T227] Call Trace:
[  171.429564][  T227]  <TASK>
[ 171.429676][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 171.429883][ T227] ? __warn (kernel/panic.c:748) 
[ 171.430052][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 171.430271][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 171.430489][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 171.430660][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 171.430878][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 171.431114][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 171.431333][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 171.431591][ T227] ? _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) 
[ 171.431807][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 171.432019][ T227] register_netdevice (net/core/dev.c:11003) 
[ 171.432275][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 171.432510][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 171.432745][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 171.433007][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 171.433296][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 171.433565][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 171.433782][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 171.433995][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 171.434269][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 171.434474][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 171.434679][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 171.434887][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 171.435123][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 171.435299][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 171.435509][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 171.435725][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 171.435938][ T227] ksys_write (fs/read_write.c:731) 
[ 171.436108][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 171.436319][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 171.436531][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  171.436823][  T227] RIP: 0033:0x7f676ec9db77
[ 171.437041][ T227] 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
[  171.437717][  T227] RSP: 002b:00007ffda8ab2a38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  171.438006][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f676ec9db77
[  171.438319][  T227] RDX: 0000000000000002 RSI: 000055ca8e9a5130 RDI: 0000000000000001
[  171.438623][  T227] RBP: 000055ca8e9a5130 R08: 0000000000000000 R09: 00007f676ed104e0
[  171.438909][  T227] R10: 00007f676ed103e0 R11: 0000000000000246 R12: 0000000000000002


Finger prints:
__netdev_update_features:register_netdevice:nsim_create:__nsim_dev_port_add:nsim_drv_port_add