======================================
| 0
| xx__-> [    9.576346][  T226] ------------[ cut here ]------------
| [ 9.576679][ T226] WARNING: CPU: 2 PID: 226 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [    9.577158][  T226] Modules linked in: netdevsim
[    9.577713][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.577985][ T226] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.578244][ T226] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[    9.578900][  T226] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[    9.579274][  T226] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.579605][  T226] RDX: 0000000000000000 RSI: ffff88800b112c98 RDI: ffff88800b600b28
[    9.579891][  T226] RBP: ffffffff91923440 R08: 0000000000000000 R09: fffffbfff1efd83c
[    9.580214][  T226] R10: ffffffff8f7ec1e7 R11: ffff88800b600040 R12: 0000000000000000
[    9.580502][  T226] R13: ffff88800b112128 R14: ffff88800b112008 R15: ffff88800b112000
[    9.580787][  T226] FS:  00007f53f3ca5740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[    9.581139][  T226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.581384][  T226] CR2: 0000558331e8747c CR3: 0000000009be0002 CR4: 0000000000772ef0
[    9.581671][  T226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.581973][  T226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.582265][  T226] PKRU: 55555554
[    9.582422][  T226] Call Trace:
[    9.582575][  T226]  <TASK>
[ 9.582687][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.582890][ T226] ? __warn (kernel/panic.c:748) 
[ 9.583055][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.583256][ T226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.583459][ T226] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.583616][ T226] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.583812][ T226] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.584035][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.584240][ T226] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.584486][ T226] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 9.584690][ T226] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.584891][ T226] register_netdevice (net/core/dev.c:11003) 
[ 9.585108][ T226] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.585319][ T226] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.585531][ T226] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.585780][ T226] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.586057][ T226] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 9.586311][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.586507][ T226] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 9.586714][ T226] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 9.586972][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.587167][ T226] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.587366][ T226] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 9.587567][ T226] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.587771][ T226] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.587931][ T226] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.588143][ T226] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 9.588347][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.588554][ T226] ksys_write (fs/read_write.c:731) 
[ 9.588710][ T226] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.588919][ T226] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.589130][ T226] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.589382][  T226] RIP: 0033:0x7f53f3de6b77
[ 9.589589][ T226] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[    9.590250][  T226] RSP: 002b:00007ffeeb73dc58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.590545][  T226] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f53f3de6b77
[    9.590835][  T226] RDX: 0000000000000002 RSI: 0000558332070130 RDI: 0000000000000001
[    9.591135][  T226] RBP: 0000558332070130 R08: 0000000000000000 R09: 00007f53f3e594e0
[    9.591427][  T226] R10: 00007f53f3e593e0 R11: 0000000000000246 R12: 0000000000000002
[    9.591716][  T226] R13: 00007f53f3ea2760 R14: 0000000000000002 R15: 00007f53f3e9d9c0
| [  132.204329][  T226] ------------[ cut here ]------------
| [ 132.204584][ T226] WARNING: CPU: 2 PID: 226 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) 
| [  132.204978][  T226] Modules linked in: netdevsim
| [  132.205575][  T226] Tainted: [W]=WARN
[  132.205731][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 132.205983][ T226] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 132.206235][ T226] 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
[  132.206877][  T226] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  132.207135][  T226] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  132.207428][  T226] RDX: 0000000000000000 RSI: ffff88800bc7ac98 RDI: ffff88800b600b28
[  132.207728][  T226] RBP: ffffffff91923440 R08: 0000000000000000 R09: fffffbfff1efd83c
[  132.208037][  T226] R10: ffffffff8f7ec1e7 R11: ffff88800b600040 R12: 0000000000000000
[  132.208339][  T226] R13: ffff88800bc7a128 R14: ffff88800bc7a008 R15: ffff88800bc7a000
[  132.208631][  T226] FS:  00007f53f3ca5740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  132.208981][  T226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  132.209242][  T226] CR2: 0000558331eac4f8 CR3: 0000000009be0001 CR4: 0000000000772ef0
[  132.209534][  T226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  132.209832][  T226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  132.210141][  T226] PKRU: 55555554
[  132.210302][  T226] Call Trace:
[  132.210455][  T226]  <TASK>
[ 132.210565][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 132.210769][ T226] ? __warn (kernel/panic.c:748) 
[ 132.210936][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 132.211147][ T226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 132.211355][ T226] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 132.211514][ T226] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 132.211717][ T226] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 132.211948][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 132.212167][ T226] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 132.212423][ T226] ? _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) 
[ 132.212643][ T226] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 132.212861][ T226] register_netdevice (net/core/dev.c:11003) 
[ 132.213093][ T226] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 132.213315][ T226] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 132.213528][ T226] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 132.213777][ T226] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 132.214054][ T226] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 132.214308][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 132.214504][ T226] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 132.214711][ T226] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 132.214974][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 132.215181][ T226] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 132.215384][ T226] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 132.215586][ T226] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 132.215790][ T226] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 132.215960][ T226] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 132.216170][ T226] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 132.216383][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 132.216602][ T226] ksys_write (fs/read_write.c:731) 
[ 132.216755][ T226] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 132.216978][ T226] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 132.217190][ T226] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  132.217447][  T226] RIP: 0033:0x7f53f3de6b77
[ 132.217657][ T226] 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
[  132.218344][  T226] RSP: 002b:00007ffeeb73c8e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  132.218641][  T226] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f53f3de6b77
[  132.218925][  T226] RDX: 0000000000000002 RSI: 0000558332070130 RDI: 0000000000000001
[  132.219224][  T226] RBP: 0000558332070130 R08: 0000000000000000 R09: 00007f53f3e594e0
[  132.219537][  T226] R10: 00007f53f3e593e0 R11: 0000000000000246 R12: 0000000000000002
[  132.219824][  T226] R13: 00007f53f3ea2760 R14: 0000000000000002 R15: 00007f53f3e9d9c0
| [  133.727264][  T226] ------------[ cut here ]------------
| [ 133.727548][ T226] WARNING: CPU: 2 PID: 226 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) 
| [  133.727977][  T226] Modules linked in: netdevsim
| [  133.728594][  T226] Tainted: [W]=WARN
[  133.728768][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 133.729037][ T226] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 133.729304][ T226] 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
[  133.729988][  T226] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  133.730246][  T226] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  133.730540][  T226] RDX: 0000000000000000 RSI: ffff88800b3c2c98 RDI: ffff88800b600b28
[  133.730827][  T226] RBP: ffffffff91923440 R08: 0000000000000000 R09: fffffbfff1efd83c
[  133.731125][  T226] R10: ffffffff8f7ec1e7 R11: ffff88800b600040 R12: 0000000000000000
[  133.731416][  T226] R13: ffff88800b3c2128 R14: ffff88800b3c2008 R15: ffff88800b3c2000
[  133.731704][  T226] FS:  00007f53f3ca5740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  133.733249][  T226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  133.733664][  T226] CR2: 0000558331e8747c CR3: 0000000009be0004 CR4: 0000000000772ef0
[  133.734049][  T226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  133.734369][  T226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  133.734684][  T226] PKRU: 55555554
[  133.734850][  T226] Call Trace:
[  133.735028][  T226]  <TASK>
[ 133.735146][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 133.735363][ T226] ? __warn (kernel/panic.c:748) 
[ 133.735537][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 133.735738][ T226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 133.736036][ T226] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 133.736204][ T226] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 133.736417][ T226] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 133.736636][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 133.736856][ T226] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 133.737137][ T226] ? _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) 
[ 133.737362][ T226] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 133.737588][ T226] register_netdevice (net/core/dev.c:11003) 
[ 133.737810][ T226] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 133.738048][ T226] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 133.738282][ T226] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 133.738561][ T226] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 133.738856][ T226] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 133.739144][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 133.739361][ T226] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 133.739589][ T226] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 133.739865][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 133.740088][ T226] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 133.740304][ T226] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 133.740511][ T226] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 133.740719][ T226] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 133.740894][ T226] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 133.741115][ T226] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 133.741329][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 133.741542][ T226] ksys_write (fs/read_write.c:731) 
[ 133.741699][ T226] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 133.741909][ T226] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 133.742122][ T226] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  133.742372][  T226] RIP: 0033:0x7f53f3de6b77
[ 133.742588][ T226] 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
[  133.743270][  T226] RSP: 002b:00007ffeeb73c8e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  133.743568][  T226] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f53f3de6b77
[  133.743869][  T226] RDX: 0000000000000002 RSI: 0000558332070130 RDI: 0000000000000001
[  133.744168][  T226] RBP: 0000558332070130 R08: 0000000000000000 R09: 00007f53f3e594e0
[  133.744457][  T226] R10: 00007f53f3e593e0 R11: 0000000000000246 R12: 0000000000000002
[  133.744747][  T226] R13: 00007f53f3ea2760 R14: 0000000000000002 R15: 00007f53f3e9d9c0
| [  135.205166][  T226] ------------[ cut here ]------------
| [ 135.205429][ T226] WARNING: CPU: 2 PID: 226 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) 
| [  135.205809][  T226] Modules linked in: netdevsim
| [  135.206442][  T226] Tainted: [W]=WARN
[  135.206610][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 135.206867][ T226] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 135.207159][ T226] 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
[  135.207873][  T226] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  135.208151][  T226] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  135.208462][  T226] RDX: 0000000000000000 RSI: ffff88800c222c98 RDI: ffff88800b600b28
[  135.208755][  T226] RBP: ffffffff91923440 R08: 0000000000000000 R09: fffffbfff1efd83c
[  135.209056][  T226] R10: ffffffff8f7ec1e7 R11: ffff88800b600040 R12: 0000000000000000
[  135.209351][  T226] R13: ffff88800c222128 R14: ffff88800c222008 R15: ffff88800c222000
[  135.209645][  T226] FS:  00007f53f3ca5740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  135.209984][  T226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  135.210238][  T226] CR2: 0000558331e8747c CR3: 0000000009be0004 CR4: 0000000000772ef0
[  135.210542][  T226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  135.210839][  T226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  135.212362][  T226] PKRU: 55555554
[  135.212569][  T226] Call Trace:
[  135.212724][  T226]  <TASK>
[ 135.212834][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 135.213045][ T226] ? __warn (kernel/panic.c:748) 
[ 135.213208][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 135.213412][ T226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 135.213617][ T226] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 135.213771][ T226] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 135.213984][ T226] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 135.214208][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 135.214416][ T226] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 135.214661][ T226] ? _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) 
[ 135.214866][ T226] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 135.215078][ T226] register_netdevice (net/core/dev.c:11003) 
[ 135.215291][ T226] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 135.215499][ T226] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 135.215716][ T226] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 135.215976][ T226] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 135.216251][ T226] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 135.216507][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 135.216706][ T226] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 135.216915][ T226] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 135.217176][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 135.217373][ T226] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 135.217578][ T226] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 135.217779][ T226] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 135.217993][ T226] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 135.218158][ T226] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 135.218363][ T226] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 135.218575][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 135.218804][ T226] ksys_write (fs/read_write.c:731) 
[ 135.218971][ T226] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 135.219180][ T226] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 135.219383][ T226] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  135.219627][  T226] RIP: 0033:0x7f53f3de6b77
[ 135.219836][ T226] 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
[  135.220496][  T226] RSP: 002b:00007ffeeb73c8e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  135.220790][  T226] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f53f3de6b77
[  135.221089][  T226] RDX: 0000000000000002 RSI: 0000558332070130 RDI: 0000000000000001
[  135.221385][  T226] RBP: 0000558332070130 R08: 0000000000000000 R09: 00007f53f3e594e0
[  135.221669][  T226] R10: 00007f53f3e593e0 R11: 0000000000000246 R12: 0000000000000002
[  135.222123][  T226] R13: 00007f53f3ea2760 R14: 0000000000000002 R15: 00007f53f3e9d9c0
| [  136.703823][  T226] ------------[ cut here ]------------
| [ 136.704123][ T226] WARNING: CPU: 2 PID: 226 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) 
| [  136.704533][  T226] Modules linked in: netdevsim
| [  136.705220][  T226] Tainted: [W]=WARN
[  136.705451][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 136.705770][ T226] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 136.706118][ T226] 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
[  136.706885][  T226] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  136.707226][  T226] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  136.707590][  T226] RDX: 0000000000000000 RSI: ffff88800b7c2c98 RDI: ffff88800b600b28
[  136.708033][  T226] RBP: ffffffff91923440 R08: 0000000000000000 R09: fffffbfff1efd83c
[  136.708476][  T226] R10: ffffffff8f7ec1e7 R11: ffff88800b600040 R12: 0000000000000000
[  136.708805][  T226] R13: ffff88800b7c2128 R14: ffff88800b7c2008 R15: ffff88800b7c2000
[  136.709128][  T226] FS:  00007f53f3ca5740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  136.709488][  T226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  136.709743][  T226] CR2: 0000558331eb9018 CR3: 0000000009be0005 CR4: 0000000000772ef0
[  136.710040][  T226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  136.710350][  T226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  136.710655][  T226] PKRU: 55555554
[  136.710823][  T226] Call Trace:
[  136.710986][  T226]  <TASK>
[ 136.711108][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 136.711326][ T226] ? __warn (kernel/panic.c:748) 
[ 136.711496][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 136.711714][ T226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 136.711918][ T226] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 136.712085][ T226] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 136.712297][ T226] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 136.712527][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 136.712740][ T226] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 136.713000][ T226] ? _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) 
[ 136.713219][ T226] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 136.713437][ T226] register_netdevice (net/core/dev.c:11003) 
[ 136.713654][ T226] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 136.713881][ T226] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 136.714111][ T226] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 136.714369][ T226] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 136.714665][ T226] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 136.714924][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 136.715142][ T226] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 136.715354][ T226] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 136.715614][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 136.715822][ T226] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 136.716030][ T226] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 136.716247][ T226] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 136.716461][ T226] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 136.716621][ T226] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 136.716829][ T226] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 136.717046][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 136.717259][ T226] ksys_write (fs/read_write.c:731) 
[ 136.717413][ T226] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 136.717629][ T226] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 136.717829][ T226] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  136.718078][  T226] RIP: 0033:0x7f53f3de6b77
[ 136.718287][ T226] 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
[  136.718971][  T226] RSP: 002b:00007ffeeb73c8e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  136.719267][  T226] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f53f3de6b77
[  136.719555][  T226] RDX: 0000000000000002 RSI: 0000558332070130 RDI: 0000000000000001
[  136.719854][  T226] RBP: 0000558332070130 R08: 0000000000000000 R09: 00007f53f3e594e0
[  136.720157][  T226] R10: 00007f53f3e593e0 R11: 0000000000000246 R12: 0000000000000002
[  136.720468][  T226] R13: 00007f53f3ea2760 R14: 0000000000000002 R15: 00007f53f3e9d9c0
| [  138.164716][  T226] ------------[ cut here ]------------
| [ 138.165011][ T226] WARNING: CPU: 2 PID: 226 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) 
| [  138.165430][  T226] Modules linked in: netdevsim
| [  138.166077][  T226] Tainted: [W]=WARN
[  138.166244][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 138.166510][ T226] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 138.166781][ T226] 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
[  138.167508][  T226] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  138.167779][  T226] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  138.168108][  T226] RDX: 0000000000000000 RSI: ffff88800b3f2c98 RDI: ffff88800b600b28
[  138.168423][  T226] RBP: ffffffff91923440 R08: 0000000000000000 R09: fffffbfff1efd83c
[  138.168743][  T226] R10: ffffffff8f7ec1e7 R11: ffff88800b600040 R12: 0000000000000000
[  138.169071][  T226] R13: ffff88800b3f2128 R14: ffff88800b3f2008 R15: ffff88800b3f2000
[  138.169383][  T226] FS:  00007f53f3ca5740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  138.169745][  T226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  138.170043][  T226] CR2: 0000558331eac5e8 CR3: 0000000009be0005 CR4: 0000000000772ef0
[  138.170361][  T226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  138.170679][  T226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  138.171001][  T226] PKRU: 55555554
[  138.171169][  T226] Call Trace:
[  138.171339][  T226]  <TASK>
[ 138.171462][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 138.171680][ T226] ? __warn (kernel/panic.c:748) 
[ 138.171851][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 138.172082][ T226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 138.172306][ T226] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 138.172477][ T226] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 138.172693][ T226] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 138.172929][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 138.173245][ T226] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 138.173593][ T226] ? _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) 
[ 138.173909][ T226] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 138.174297][ T226] register_netdevice (net/core/dev.c:11003) 
[ 138.174677][ T226] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 138.175066][ T226] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 138.175448][ T226] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 138.175820][ T226] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 138.176124][ T226] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 138.176403][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 138.176620][ T226] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 138.176847][ T226] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 138.177130][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 138.177355][ T226] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 138.177576][ T226] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 138.177798][ T226] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 138.178026][ T226] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 138.178204][ T226] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 138.178428][ T226] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 138.178661][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 138.178892][ T226] ksys_write (fs/read_write.c:731) 
[ 138.179070][ T226] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 138.179295][ T226] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 138.179511][ T226] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  138.179782][  T226] RIP: 0033:0x7f53f3de6b77
[ 138.180010][ T226] 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
[  138.180716][  T226] RSP: 002b:00007ffeeb73c8e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  138.181038][  T226] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f53f3de6b77
[  138.181353][  T226] RDX: 0000000000000002 RSI: 0000558332070130 RDI: 0000000000000001
[  138.181666][  T226] RBP: 0000558332070130 R08: 0000000000000000 R09: 00007f53f3e594e0
[  138.181985][  T226] R10: 00007f53f3e593e0 R11: 0000000000000246 R12: 0000000000000002
[  138.182294][  T226] R13: 00007f53f3ea2760 R14: 0000000000000002 R15: 00007f53f3e9d9c0
| [  139.636643][  T226] ------------[ cut here ]------------
| [ 139.636910][ T226] WARNING: CPU: 2 PID: 226 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) 
| [  139.637908][  T226] Modules linked in: netdevsim
| [  139.638544][  T226] Tainted: [W]=WARN
[  139.638731][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 139.639007][ T226] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 139.639280][ T226] 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
[  139.639976][  T226] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  139.640236][  T226] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  139.640532][  T226] RDX: 0000000000000000 RSI: ffff88800df52c98 RDI: ffff88800b600b28
[  139.640836][  T226] RBP: ffffffff91923440 R08: 0000000000000000 R09: fffffbfff1efd83c
[  139.641133][  T226] R10: ffffffff8f7ec1e7 R11: ffff88800b600040 R12: 0000000000000000
[  139.641439][  T226] R13: ffff88800df52128 R14: ffff88800df52008 R15: ffff88800df52000
[  139.641737][  T226] FS:  00007f53f3ca5740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  139.642137][  T226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  139.642402][  T226] CR2: 0000558331eb9018 CR3: 0000000009be0005 CR4: 0000000000772ef0
[  139.642702][  T226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  139.643002][  T226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  139.643304][  T226] PKRU: 55555554
[  139.643464][  T226] Call Trace:
[  139.643619][  T226]  <TASK>
[ 139.643732][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 139.643948][ T226] ? __warn (kernel/panic.c:748) 
[ 139.644127][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 139.644337][ T226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 139.644565][ T226] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 139.644735][ T226] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 139.644957][ T226] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 139.645189][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 139.645425][ T226] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 139.645694][ T226] ? _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) 
[ 139.645910][ T226] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 139.646137][ T226] register_netdevice (net/core/dev.c:11003) 
[ 139.646359][ T226] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 139.646572][ T226] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 139.646801][ T226] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 139.647079][ T226] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 139.647367][ T226] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 139.647638][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 139.647839][ T226] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 139.648066][ T226] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 139.648338][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 139.648539][ T226] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 139.648754][ T226] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 139.648980][ T226] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 139.649196][ T226] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 139.649367][ T226] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 139.649589][ T226] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 139.649802][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 139.650036][ T226] ksys_write (fs/read_write.c:731) 
[ 139.650202][ T226] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 139.650428][ T226] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 139.650638][ T226] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  139.650906][  T226] RIP: 0033:0x7f53f3de6b77
[ 139.651128][ T226] 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
[  139.651797][  T226] RSP: 002b:00007ffeeb73c8e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  139.652112][  T226] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f53f3de6b77
[  139.652418][  T226] RDX: 0000000000000002 RSI: 0000558332070130 RDI: 0000000000000001
[  139.652706][  T226] RBP: 0000558332070130 R08: 0000000000000000 R09: 00007f53f3e594e0
[  139.653001][  T226] R10: 00007f53f3e593e0 R11: 0000000000000246 R12: 0000000000000002
[  139.653294][  T226] R13: 00007f53f3ea2760 R14: 0000000000000002 R15: 00007f53f3e9d9c0
| [  141.092042][  T226] ------------[ cut here ]------------
| [ 141.092274][ T226] WARNING: CPU: 3 PID: 226 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) 
| [  141.092643][  T226] Modules linked in: netdevsim
| [  141.093285][  T226] Tainted: [W]=WARN
[  141.093427][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 141.093658][ T226] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 141.093897][ T226] 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
[  141.094577][  T226] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  141.094816][  T226] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  141.095105][  T226] RDX: 0000000000000000 RSI: ffff88800c222c98 RDI: ffff88800b600b28
[  141.095387][  T226] RBP: ffffffff91923440 R08: 0000000000000000 R09: fffffbfff1efd83c
[  141.095675][  T226] R10: ffffffff8f7ec1e7 R11: ffff88800b600040 R12: 0000000000000000
[  141.095957][  T226] R13: ffff88800c222128 R14: ffff88800c222008 R15: ffff88800c222000
[  141.096239][  T226] FS:  00007f53f3ca5740(0000) GS:ffff88802f580000(0000) knlGS:0000000000000000
[  141.096558][  T226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  141.096805][  T226] CR2: 0000558331e8747c CR3: 0000000009be0006 CR4: 0000000000772ef0
[  141.097090][  T226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  141.097370][  T226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  141.097658][  T226] PKRU: 55555554
[  141.097800][  T226] Call Trace:
[  141.097946][  T226]  <TASK>
[ 141.098057][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 141.098252][ T226] ? __warn (kernel/panic.c:748) 
[ 141.098396][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 141.098606][ T226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 141.098809][ T226] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 141.098974][ T226] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 141.099161][ T226] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 141.099371][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 141.099569][ T226] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 141.099818][ T226] ? _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) 
[ 141.100020][ T226] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 141.100224][ T226] register_netdevice (net/core/dev.c:11003) 
[ 141.100424][ T226] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 141.100629][ T226] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 141.100844][ T226] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 141.101108][ T226] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 141.101386][ T226] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 141.101651][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 141.101855][ T226] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 141.102075][ T226] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 141.102341][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 141.102544][ T226] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 141.102751][ T226] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 141.102966][ T226] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 141.103177][ T226] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 141.103344][ T226] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 141.103553][ T226] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 141.103763][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 141.103983][ T226] ksys_write (fs/read_write.c:731) 
[ 141.104143][ T226] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 141.104354][ T226] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 141.104546][ T226] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  141.104773][  T226] RIP: 0033:0x7f53f3de6b77
[ 141.104970][ T226] 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
[  141.105618][  T226] RSP: 002b:00007ffeeb73c8e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  141.105904][  T226] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f53f3de6b77
[  141.106208][  T226] RDX: 0000000000000002 RSI: 0000558332070130 RDI: 0000000000000001
[  141.106502][  T226] RBP: 0000558332070130 R08: 0000000000000000 R09: 00007f53f3e594e0
[  141.106800][  T226] R10: 00007f53f3e593e0 R11: 0000000000000246 R12: 0000000000000002
[  141.107106][  T226] R13: 00007f53f3ea2760 R14: 0000000000000002 R15: 00007f53f3e9d9c0
| [  142.570983][  T226] ------------[ cut here ]------------
| [ 142.571215][ T226] WARNING: CPU: 3 PID: 226 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) 
| [  142.571594][  T226] Modules linked in: netdevsim
| [  142.572172][  T226] Tainted: [W]=WARN
[  142.572314][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 142.572542][ T226] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 142.572775][ T226] 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
[  142.573422][  T226] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  142.573650][  T226] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  142.573925][  T226] RDX: 0000000000000000 RSI: ffff88800b7c2c98 RDI: ffff88800b600b28
[  142.574223][  T226] RBP: ffffffff91923440 R08: 0000000000000000 R09: fffffbfff1efd83c
[  142.574497][  T226] R10: ffffffff8f7ec1e7 R11: ffff88800b600040 R12: 0000000000000000
[  142.574767][  T226] R13: ffff88800b7c2128 R14: ffff88800b7c2008 R15: ffff88800b7c2000
[  142.575059][  T226] FS:  00007f53f3ca5740(0000) GS:ffff88802f580000(0000) knlGS:0000000000000000
[  142.575388][  T226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  142.575617][  T226] CR2: 0000558332046de8 CR3: 0000000009be0006 CR4: 0000000000772ef0
[  142.575892][  T226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  142.576189][  T226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  142.576474][  T226] PKRU: 55555554
[  142.576616][  T226] Call Trace:
[  142.576763][  T226]  <TASK>
[ 142.576862][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 142.577065][ T226] ? __warn (kernel/panic.c:748) 
[ 142.577216][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 142.577402][ T226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 142.577589][ T226] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 142.577730][ T226] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 142.577915][ T226] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 142.578142][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 142.578352][ T226] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 142.578608][ T226] ? _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) 
[ 142.578815][ T226] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 142.579022][ T226] register_netdevice (net/core/dev.c:11003) 
[ 142.579228][ T226] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 142.579436][ T226] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 142.579658][ T226] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 142.579898][ T226] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 142.580163][ T226] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 142.580423][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 142.580622][ T226] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 142.580828][ T226] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 142.581095][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 142.581300][ T226] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 142.581487][ T226] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 142.581685][ T226] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 142.581878][ T226] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 142.582038][ T226] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 142.582239][ T226] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 142.582448][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 142.582655][ T226] ksys_write (fs/read_write.c:731) 
[ 142.582802][ T226] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 142.583014][ T226] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 142.583219][ T226] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  142.583463][  T226] RIP: 0033:0x7f53f3de6b77
[ 142.583653][ T226] 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
[  142.584325][  T226] RSP: 002b:00007ffeeb73c8e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  142.584610][  T226] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f53f3de6b77
[  142.584887][  T226] RDX: 0000000000000002 RSI: 0000558332070130 RDI: 0000000000000001
[  142.585185][  T226] RBP: 0000558332070130 R08: 0000000000000000 R09: 00007f53f3e594e0
[  142.585472][  T226] R10: 00007f53f3e593e0 R11: 0000000000000246 R12: 0000000000000002
[  142.585751][  T226] R13: 00007f53f3ea2760 R14: 0000000000000002 R15: 00007f53f3e9d9c0
| [  144.044468][  T226] ------------[ cut here ]------------
| [ 144.044697][ T226] WARNING: CPU: 0 PID: 226 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) 
| [  144.045181][  T226] Modules linked in: netdevsim
| [  144.045747][  T226] Tainted: [W]=WARN
[  144.045887][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 144.046125][ T226] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 144.046364][ T226] 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
[  144.047022][  T226] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  144.047268][  T226] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  144.047542][  T226] RDX: 0000000000000000 RSI: ffff88800b3f2c98 RDI: ffff88800b600b28
[  144.047827][  T226] RBP: ffffffff91923440 R08: 0000000000000000 R09: fffffbfff1efd83c
[  144.048108][  T226] R10: ffffffff8f7ec1e7 R11: ffff88800b600040 R12: 0000000000000000
[  144.048384][  T226] R13: ffff88800b3f2128 R14: ffff88800b3f2008 R15: ffff88800b3f2000
[  144.048667][  T226] FS:  00007f53f3ca5740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[  144.048993][  T226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  144.049233][  T226] CR2: 0000558331e8747c CR3: 0000000009be0003 CR4: 0000000000772ef0
[  144.049509][  T226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  144.049785][  T226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  144.050066][  T226] PKRU: 55555554
[  144.050214][  T226] Call Trace:
[  144.050362][  T226]  <TASK>
[ 144.050460][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 144.050648][ T226] ? __warn (kernel/panic.c:748) 
[ 144.050792][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 144.050986][ T226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 144.051182][ T226] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 144.051334][ T226] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 144.051531][ T226] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 144.051740][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 144.051958][ T226] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 144.052218][ T226] ? _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) 
[ 144.052429][ T226] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 144.052642][ T226] register_netdevice (net/core/dev.c:11003) 
[ 144.052854][ T226] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 144.053080][ T226] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 144.053303][ T226] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 144.053566][ T226] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 144.053845][ T226] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 144.054119][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 144.054325][ T226] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 144.054523][ T226] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 144.054762][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 144.054948][ T226] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 144.055147][ T226] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 144.055352][ T226] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 144.055547][ T226] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 144.055697][ T226] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 144.055884][ T226] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 144.056090][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 144.056290][ T226] ksys_write (fs/read_write.c:731) 
[ 144.056437][ T226] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 144.056637][ T226] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 144.056827][ T226] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  144.057061][  T226] RIP: 0033:0x7f53f3de6b77
[ 144.057257][ T226] 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
[  144.057907][  T226] RSP: 002b:00007ffeeb73c8e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  144.058196][  T226] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f53f3de6b77
[  144.058476][  T226] RDX: 0000000000000002 RSI: 0000558332070130 RDI: 0000000000000001
[  144.058769][  T226] RBP: 0000558332070130 R08: 0000000000000000 R09: 00007f53f3e594e0
[  144.059054][  T226] R10: 00007f53f3e593e0 R11: 0000000000000246 R12: 0000000000000002
[  144.059334][  T226] R13: 00007f53f3ea2760 R14: 0000000000000002 R15: 00007f53f3e9d9c0
| [  145.544307][  T226] ------------[ cut here ]------------
| [ 145.544533][ T226] WARNING: CPU: 0 PID: 226 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) 
| [  145.544899][  T226] Modules linked in: netdevsim
| [  145.545484][  T226] Tainted: [W]=WARN
[  145.545628][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 145.545852][ T226] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 145.546109][ T226] 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
[  145.546774][  T226] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  145.547013][  T226] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  145.547300][  T226] RDX: 0000000000000000 RSI: ffff88800df52c98 RDI: ffff88800b600b28
[  145.547572][  T226] RBP: ffffffff91923440 R08: 0000000000000000 R09: fffffbfff1efd83c
[  145.547846][  T226] R10: ffffffff8f7ec1e7 R11: ffff88800b600040 R12: 0000000000000000
[  145.548143][  T226] R13: ffff88800df52128 R14: ffff88800df52008 R15: ffff88800df52000
[  145.548428][  T226] FS:  00007f53f3ca5740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[  145.548760][  T226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  145.549010][  T226] CR2: 0000558331e8747c CR3: 0000000009be0003 CR4: 0000000000772ef0
[  145.549297][  T226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  145.549569][  T226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  145.549851][  T226] PKRU: 55555554
[  145.549997][  T226] Call Trace:
[  145.550139][  T226]  <TASK>
[ 145.550242][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 145.550441][ T226] ? __warn (kernel/panic.c:748) 
[ 145.550590][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 145.550778][ T226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 145.550981][ T226] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 145.551122][ T226] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 145.551314][ T226] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 145.551511][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 145.551704][ T226] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 145.551958][ T226] ? _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) 
[ 145.552157][ T226] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 145.552365][ T226] register_netdevice (net/core/dev.c:11003) 
[ 145.552561][ T226] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 145.552759][ T226] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 145.552978][ T226] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 145.553240][ T226] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 145.553495][ T226] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 145.553748][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 145.553939][ T226] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 145.554157][ T226] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 145.554400][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 145.554591][ T226] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 145.554785][ T226] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 145.554982][ T226] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 145.555179][ T226] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 145.555342][ T226] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 145.555532][ T226] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 145.555730][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 145.555925][ T226] ksys_write (fs/read_write.c:731) 
[ 145.556081][ T226] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 145.556288][ T226] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 145.556476][ T226] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  145.556705][  T226] RIP: 0033:0x7f53f3de6b77
[ 145.556901][ T226] 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
[  145.557582][  T226] RSP: 002b:00007ffeeb73c8e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  145.557871][  T226] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f53f3de6b77
[  145.558159][  T226] RDX: 0000000000000002 RSI: 0000558332070130 RDI: 0000000000000001
[  145.558455][  T226] RBP: 0000558332070130 R08: 0000000000000000 R09: 00007f53f3e594e0
[  145.558752][  T226] R10: 00007f53f3e593e0 R11: 0000000000000246 R12: 0000000000000002
[  145.559037][  T226] R13: 00007f53f3ea2760 R14: 0000000000000002 R15: 00007f53f3e9d9c0
| [  149.391088][  T226] ------------[ cut here ]------------
| [ 149.391375][ T226] WARNING: CPU: 1 PID: 226 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) 
| [  149.391834][  T226] Modules linked in: netdevsim
| [  149.392428][  T226] Tainted: [W]=WARN
[  149.392569][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 149.392812][ T226] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 149.393076][ T226] 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
[  149.393759][  T226] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  149.394086][  T226] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  149.394379][  T226] RDX: 0000000000000000 RSI: ffff88800b7c2c98 RDI: ffff88800b600b28
[  149.394653][  T226] RBP: ffffffff91923440 R08: 0000000000000000 R09: fffffbfff1efd83c
[  149.394943][  T226] R10: ffffffff8f7ec1e7 R11: ffff88800b600040 R12: 0000000000000000
[  149.395239][  T226] R13: ffff88800b7c2128 R14: ffff88800b7c2008 R15: ffff88800b7c2000
[  149.395516][  T226] FS:  00007f53f3ca5740(0000) GS:ffff88802f480000(0000) knlGS:0000000000000000
[  149.395839][  T226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  149.396082][  T226] CR2: 00005629bb344000 CR3: 0000000009be0006 CR4: 0000000000772ef0
[  149.396363][  T226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  149.396632][  T226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  149.396904][  T226] PKRU: 55555554
[  149.397053][  T226] Call Trace:
[  149.397198][  T226]  <TASK>
[ 149.397293][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 149.397478][ T226] ? __warn (kernel/panic.c:748) 
[ 149.397626][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 149.397815][ T226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 149.398017][ T226] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 149.398162][ T226] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 149.398370][ T226] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 149.398640][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 149.398855][ T226] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 149.399121][ T226] ? _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) 
[ 149.399333][ T226] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 149.399539][ T226] register_netdevice (net/core/dev.c:11003) 
[ 149.399751][ T226] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 149.399975][ T226] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 149.400197][ T226] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 149.400463][ T226] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 149.400736][ T226] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 149.401003][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 149.401207][ T226] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 149.401415][ T226] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 149.401668][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 149.401866][ T226] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 149.402076][ T226] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 149.402278][ T226] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 149.402483][ T226] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 149.402644][ T226] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 149.402848][ T226] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 149.403065][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 149.403278][ T226] ksys_write (fs/read_write.c:731) 
[ 149.403434][ T226] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 149.403642][ T226] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 149.403844][ T226] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  149.404103][  T226] RIP: 0033:0x7f53f3de6b77
[ 149.404312][ T226] 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
[  149.405015][  T226] RSP: 002b:00007ffeeb73c048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  149.405312][  T226] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f53f3de6b77
[  149.405610][  T226] RDX: 0000000000000002 RSI: 0000558332070130 RDI: 0000000000000001
[  149.405906][  T226] RBP: 0000558332070130 R08: 0000000000000000 R09: 00007f53f3e594e0
[  149.406216][  T226] R10: 00007f53f3e593e0 R11: 0000000000000246 R12: 0000000000000002
[  149.406498][  T226] R13: 00007f53f3ea2760 R14: 0000000000000002 R15: 00007f53f3e9d9c0
| [  150.975019][  T226] ------------[ cut here ]------------
| [ 150.975322][ T226] WARNING: CPU: 1 PID: 226 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) 
| [  150.975692][  T226] Modules linked in: netdevsim
| [  150.976269][  T226] Tainted: [W]=WARN
[  150.976418][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 150.976656][ T226] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 150.976890][ T226] 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
[  150.977561][  T226] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  150.977813][  T226] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  150.978241][  T226] RDX: 0000000000000000 RSI: ffff88800b3f2c98 RDI: ffff88800b600b28
[  150.978539][  T226] RBP: ffffffff91923440 R08: 0000000000000000 R09: fffffbfff1efd83c
[  150.978830][  T226] R10: ffffffff8f7ec1e7 R11: ffff88800b600040 R12: 0000000000000000
[  150.979138][  T226] R13: ffff88800b3f2128 R14: ffff88800b3f2008 R15: ffff88800b3f2000
[  150.979434][  T226] FS:  00007f53f3ca5740(0000) GS:ffff88802f480000(0000) knlGS:0000000000000000
[  150.979784][  T226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  150.980044][  T226] CR2: 0000558331f0b408 CR3: 0000000009be0006 CR4: 0000000000772ef0
[  150.980345][  T226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  150.980648][  T226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  150.980948][  T226] PKRU: 55555554
[  150.981129][  T226] Call Trace:
[  150.981282][  T226]  <TASK>
[ 150.981388][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 150.981592][ T226] ? __warn (kernel/panic.c:748) 
[ 150.981748][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 150.981961][ T226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 150.982175][ T226] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 150.982337][ T226] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 150.982539][ T226] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 150.982753][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 150.982984][ T226] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 150.983243][ T226] ? _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) 
[ 150.983453][ T226] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 150.983652][ T226] register_netdevice (net/core/dev.c:11003) 
[ 150.983855][ T226] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 150.984075][ T226] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 150.984291][ T226] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 150.984544][ T226] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 150.984813][ T226] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 150.985090][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 150.985301][ T226] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 150.985516][ T226] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 150.985774][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 150.985986][ T226] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 150.986189][ T226] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 150.986398][ T226] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 150.986607][ T226] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 150.986776][ T226] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 150.986991][ T226] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 150.987210][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 150.987422][ T226] ksys_write (fs/read_write.c:731) 
[ 150.987580][ T226] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 150.987776][ T226] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 150.987976][ T226] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  150.988224][  T226] RIP: 0033:0x7f53f3de6b77
[ 150.988416][ T226] 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
[  150.989097][  T226] RSP: 002b:00007ffeeb73c048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  150.989392][  T226] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f53f3de6b77
[  150.989676][  T226] RDX: 0000000000000002 RSI: 0000558332070130 RDI: 0000000000000001
[  150.989980][  T226] RBP: 0000558332070130 R08: 0000000000000000 R09: 00007f53f3e594e0
[  150.990278][  T226] R10: 00007f53f3e593e0 R11: 0000000000000246 R12: 0000000000000002
[  150.990569][  T226] R13: 00007f53f3ea2760 R14: 0000000000000002 R15: 00007f53f3e9d9c0
| [  152.559419][  T226] ------------[ cut here ]------------
| [ 152.559712][ T226] WARNING: CPU: 1 PID: 226 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) 
| [  152.560112][  T226] Modules linked in: netdevsim
| [  152.560678][  T226] Tainted: [W]=WARN
[  152.560820][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 152.561492][ T226] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 152.561729][ T226] 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
[  152.562372][  T226] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  152.562608][  T226] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  152.562879][  T226] RDX: 0000000000000000 RSI: ffff88800b3c2c98 RDI: ffff88800b600b28
[  152.563163][  T226] RBP: ffffffff91923440 R08: 0000000000000000 R09: fffffbfff1efd83c
[  152.563436][  T226] R10: ffffffff8f7ec1e7 R11: ffff88800b600040 R12: 0000000000000000
[  152.563711][  T226] R13: ffff88800b3c2128 R14: ffff88800b3c2008 R15: ffff88800b3c2000
[  152.564006][  T226] FS:  00007f53f3ca5740(0000) GS:ffff88802f480000(0000) knlGS:0000000000000000
[  152.564331][  T226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  152.564564][  T226] CR2: 0000558331f15088 CR3: 0000000009be0006 CR4: 0000000000772ef0
[  152.564841][  T226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  152.565124][  T226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  152.565405][  T226] PKRU: 55555554
[  152.565546][  T226] Call Trace:
[  152.565769][  T226]  <TASK>
[ 152.565868][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 152.566065][ T226] ? __warn (kernel/panic.c:748) 
[ 152.566209][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 152.566402][ T226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 152.566600][ T226] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 152.566745][ T226] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 152.566938][ T226] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 152.567146][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 152.567344][ T226] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 152.567582][ T226] ? _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) 
[ 152.567776][ T226] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 152.567987][ T226] register_netdevice (net/core/dev.c:11003) 
[ 152.568181][ T226] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 152.568379][ T226] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 152.568599][ T226] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 152.568840][ T226] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 152.569104][ T226] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 152.569357][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 152.569543][ T226] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 152.569738][ T226] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 152.569988][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 152.570175][ T226] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 152.570361][ T226] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 152.570552][ T226] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 152.570746][ T226] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 152.570896][ T226] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 152.571097][ T226] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 152.571294][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 152.571492][ T226] ksys_write (fs/read_write.c:731) 
[ 152.571638][ T226] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 152.571836][ T226] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 152.572046][ T226] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  152.572278][  T226] RIP: 0033:0x7f53f3de6b77
[ 152.572470][ T226] 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
[  152.573122][  T226] RSP: 002b:00007ffeeb73c048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  152.573409][  T226] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f53f3de6b77
[  152.573688][  T226] RDX: 0000000000000002 RSI: 0000558332070130 RDI: 0000000000000001
[  152.573970][  T226] RBP: 0000558332070130 R08: 0000000000000000 R09: 00007f53f3e594e0
[  152.574253][  T226] R10: 00007f53f3e593e0 R11: 0000000000000246 R12: 0000000000000002
[  152.574529][  T226] R13: 00007f53f3ea2760 R14: 0000000000000002 R15: 00007f53f3e9d9c0
| [  154.110344][  T226] ------------[ cut here ]------------
| [ 154.110675][ T226] WARNING: CPU: 2 PID: 226 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) 
| [  154.111107][  T226] Modules linked in: netdevsim
| [  154.111721][  T226] Tainted: [W]=WARN
[  154.111881][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 154.112159][ T226] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 154.112431][ T226] 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
[  154.113161][  T226] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  154.113436][  T226] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  154.113747][  T226] RDX: 0000000000000000 RSI: ffff88800df52c98 RDI: ffff88800b600b28
[  154.114174][  T226] RBP: ffffffff91923440 R08: 0000000000000000 R09: fffffbfff1efd83c
[  154.114592][  T226] R10: ffffffff8f7ec1e7 R11: ffff88800b600040 R12: 0000000000000000
[  154.114928][  T226] R13: ffff88800df52128 R14: ffff88800df52008 R15: ffff88800df52000
[  154.115259][  T226] FS:  00007f53f3ca5740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  154.115627][  T226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  154.115994][  T226] CR2: 00007f4f9378fa00 CR3: 0000000009be0006 CR4: 0000000000772ef0
[  154.116313][  T226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  154.116626][  T226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  154.116961][  T226] PKRU: 55555554
[  154.117118][  T226] Call Trace:
[  154.117279][  T226]  <TASK>
[ 154.117394][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 154.117615][ T226] ? __warn (kernel/panic.c:748) 
[ 154.117786][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 154.118015][ T226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 154.118244][ T226] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 154.118412][ T226] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 154.118645][ T226] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 154.118874][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 154.119112][ T226] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 154.119384][ T226] ? _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) 
[ 154.119608][ T226] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 154.119832][ T226] register_netdevice (net/core/dev.c:11003) 
[ 154.120065][ T226] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 154.120290][ T226] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 154.120520][ T226] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 154.120787][ T226] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 154.121087][ T226] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 154.121361][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 154.121576][ T226] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 154.121796][ T226] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 154.122074][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 154.122284][ T226] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 154.122498][ T226] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 154.122711][ T226] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 154.122934][ T226] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 154.123116][ T226] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 154.123334][ T226] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 154.123552][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 154.123771][ T226] ksys_write (fs/read_write.c:731) 
[ 154.123939][ T226] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 154.124170][ T226] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 154.124386][ T226] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  154.124645][  T226] RIP: 0033:0x7f53f3de6b77
[ 154.124861][ T226] 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
[  154.125560][  T226] RSP: 002b:00007ffeeb73c048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  154.125879][  T226] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f53f3de6b77
[  154.126191][  T226] RDX: 0000000000000002 RSI: 0000558332070130 RDI: 0000000000000001
[  154.126496][  T226] RBP: 0000558332070130 R08: 0000000000000000 R09: 00007f53f3e594e0
[  154.126795][  T226] R10: 00007f53f3e593e0 R11: 0000000000000246 R12: 0000000000000002
[  154.127110][  T226] R13: 00007f53f3ea2760 R14: 0000000000000002 R15: 00007f53f3e9d9c0
| [  155.645536][  T226] ------------[ cut here ]------------
| [ 155.645832][ T226] WARNING: CPU: 0 PID: 226 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) 
| [  155.646229][  T226] Modules linked in: netdevsim
| [  155.646831][  T226] Tainted: [W]=WARN
[  155.646994][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 155.647255][ T226] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 155.647501][ T226] 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
[  155.648160][  T226] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  155.648403][  T226] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  155.648695][  T226] RDX: 0000000000000000 RSI: ffff88800b7c2c98 RDI: ffff88800b600b28
[  155.648992][  T226] RBP: ffffffff91923440 R08: 0000000000000000 R09: fffffbfff1efd83c
[  155.649279][  T226] R10: ffffffff8f7ec1e7 R11: ffff88800b600040 R12: 0000000000000000
[  155.649566][  T226] R13: ffff88800b7c2128 R14: ffff88800b7c2008 R15: ffff88800b7c2000
[  155.649850][  T226] FS:  00007f53f3ca5740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[  155.650190][  T226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  155.650508][  T226] CR2: 00007f4f9359e1a0 CR3: 0000000009be0001 CR4: 0000000000772ef0
[  155.650796][  T226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  155.651078][  T226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  155.651363][  T226] PKRU: 55555554
[  155.651516][  T226] Call Trace:
[  155.651664][  T226]  <TASK>
[ 155.651764][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 155.651961][ T226] ? __warn (kernel/panic.c:748) 
[ 155.652113][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 155.652313][ T226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 155.652520][ T226] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 155.652665][ T226] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 155.652864][ T226] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 155.653074][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 155.653290][ T226] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 155.653535][ T226] ? _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) 
[ 155.653726][ T226] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 155.653922][ T226] register_netdevice (net/core/dev.c:11003) 
[ 155.654121][ T226] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 155.654332][ T226] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 155.654544][ T226] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 155.654801][ T226] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 155.655072][ T226] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 155.655333][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 155.655527][ T226] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 155.655735][ T226] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 155.656002][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 155.656193][ T226] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 155.656386][ T226] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 155.656576][ T226] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 155.656785][ T226] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 155.656940][ T226] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 155.657148][ T226] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 155.657363][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 155.657563][ T226] ksys_write (fs/read_write.c:731) 
[ 155.657709][ T226] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 155.657917][ T226] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 155.658116][ T226] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  155.658357][  T226] RIP: 0033:0x7f53f3de6b77
[ 155.658564][ T226] 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
[  155.659223][  T226] RSP: 002b:00007ffeeb73c048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  155.659526][  T226] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f53f3de6b77
[  155.659809][  T226] RDX: 0000000000000002 RSI: 0000558332070130 RDI: 0000000000000001
[  155.660107][  T226] RBP: 0000558332070130 R08: 0000000000000000 R09: 00007f53f3e594e0
[  155.660403][  T226] R10: 00007f53f3e593e0 R11: 0000000000000246 R12: 0000000000000002
[  155.660683][  T226] R13: 00007f53f3ea2760 R14: 0000000000000002 R15: 00007f53f3e9d9c0
| [  157.196661][  T226] ------------[ cut here ]------------
| [ 157.197025][ T226] WARNING: CPU: 2 PID: 226 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) 
| [  157.197447][  T226] Modules linked in: netdevsim
| [  157.198110][  T226] Tainted: [W]=WARN
[  157.198284][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 157.198647][ T226] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 157.198922][ T226] 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
[  157.199643][  T226] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  157.199915][  T226] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  157.200249][  T226] RDX: 0000000000000000 RSI: ffff88800b3f2c98 RDI: ffff88800b600b28
[  157.200566][  T226] RBP: ffffffff91923440 R08: 0000000000000000 R09: fffffbfff1efd83c
[  157.200877][  T226] R10: ffffffff8f7ec1e7 R11: ffff88800b600040 R12: 0000000000000000
[  157.201200][  T226] R13: ffff88800b3f2128 R14: ffff88800b3f2008 R15: ffff88800b3f2000
[  157.201512][  T226] FS:  00007f53f3ca5740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  157.201871][  T226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  157.202148][  T226] CR2: 00005629904c2630 CR3: 0000000009be0003 CR4: 0000000000772ef0
[  157.202463][  T226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  157.202772][  T226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  157.203092][  T226] PKRU: 55555554
[  157.203257][  T226] Call Trace:
[  157.203421][  T226]  <TASK>
[ 157.203538][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 157.203757][ T226] ? __warn (kernel/panic.c:748) 
[ 157.203915][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 157.204126][ T226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 157.204344][ T226] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 157.204503][ T226] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 157.204720][ T226] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 157.204931][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 157.205154][ T226] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 157.205403][ T226] ? _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) 
[ 157.205623][ T226] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 157.205826][ T226] register_netdevice (net/core/dev.c:11003) 
[ 157.206046][ T226] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 157.206262][ T226] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 157.206478][ T226] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 157.206734][ T226] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 157.207027][ T226] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 157.207299][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 157.207504][ T226] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 157.207726][ T226] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 157.208017][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 157.208222][ T226] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 157.208435][ T226] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 157.208645][ T226] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 157.208850][ T226] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 157.209032][ T226] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 157.209241][ T226] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 157.209460][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 157.209679][ T226] ksys_write (fs/read_write.c:731) 
[ 157.209837][ T226] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 157.210064][ T226] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 157.210274][ T226] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  157.210514][  T226] RIP: 0033:0x7f53f3de6b77
[ 157.210734][ T226] 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
[  157.211414][  T226] RSP: 002b:00007ffeeb73c048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  157.211723][  T226] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f53f3de6b77
[  157.212029][  T226] RDX: 0000000000000002 RSI: 0000558332070130 RDI: 0000000000000001
[  157.212338][  T226] RBP: 0000558332070130 R08: 0000000000000000 R09: 00007f53f3e594e0
[  157.212623][  T226] R10: 00007f53f3e593e0 R11: 0000000000000246 R12: 0000000000000002
[  157.212910][  T226] R13: 00007f53f3ea2760 R14: 0000000000000002 R15: 00007f53f3e9d9c0
| [  158.794819][  T226] ------------[ cut here ]------------
| [ 158.795165][ T226] WARNING: CPU: 2 PID: 226 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) 
| [  158.795577][  T226] Modules linked in: netdevsim
| [  158.796188][  T226] Tainted: [W]=WARN
[  158.796348][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 158.796606][ T226] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 158.796872][ T226] 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
[  158.797754][  T226] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  158.798034][  T226] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  158.798332][  T226] RDX: 0000000000000000 RSI: ffff88800b3c2c98 RDI: ffff88800b600b28
[  158.798648][  T226] RBP: ffffffff91923440 R08: 0000000000000000 R09: fffffbfff1efd83c
[  158.798939][  T226] R10: ffffffff8f7ec1e7 R11: ffff88800b600040 R12: 0000000000000000
[  158.799252][  T226] R13: ffff88800b3c2128 R14: ffff88800b3c2008 R15: ffff88800b3c2000
[  158.799545][  T226] FS:  00007f53f3ca5740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  158.799883][  T226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  158.800144][  T226] CR2: 00007f53f3d9e890 CR3: 0000000009be0003 CR4: 0000000000772ef0
[  158.800556][  T226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  158.800846][  T226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  158.801160][  T226] PKRU: 55555554
[  158.801316][  T226] Call Trace:
[  158.801481][  T226]  <TASK>
[ 158.801595][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 158.801796][ T226] ? __warn (kernel/panic.c:748) 
[ 158.801987][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 158.802188][ T226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 158.802410][ T226] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 158.802569][ T226] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 158.802768][ T226] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 158.803005][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 158.803220][ T226] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 158.803485][ T226] ? _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) 
[ 158.803693][ T226] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 158.803909][ T226] register_netdevice (net/core/dev.c:11003) 
[ 158.804128][ T226] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 158.804356][ T226] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 158.804573][ T226] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 158.804833][ T226] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 158.805121][ T226] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 158.805386][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 158.805587][ T226] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 158.805801][ T226] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 158.806085][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 158.806292][ T226] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 158.806498][ T226] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 158.806702][ T226] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 158.806919][ T226] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 158.807091][ T226] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 158.807300][ T226] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 158.807512][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 158.807721][ T226] ksys_write (fs/read_write.c:731) 
[ 158.807878][ T226] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 158.808109][ T226] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 158.808315][ T226] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  158.808572][  T226] RIP: 0033:0x7f53f3de6b77
[ 158.808776][ T226] 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
[  158.809447][  T226] RSP: 002b:00007ffeeb73c048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  158.809748][  T226] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f53f3de6b77
[  158.810052][  T226] RDX: 0000000000000002 RSI: 0000558332070130 RDI: 0000000000000001
[  158.810351][  T226] RBP: 0000558332070130 R08: 0000000000000000 R09: 00007f53f3e594e0
[  158.810636][  T226] R10: 00007f53f3e593e0 R11: 0000000000000246 R12: 0000000000000002
[  158.810932][  T226] R13: 00007f53f3ea2760 R14: 0000000000000002 R15: 00007f53f3e9d9c0
| [  160.347206][  T226] ------------[ cut here ]------------
| [ 160.347525][ T226] WARNING: CPU: 2 PID: 226 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) 
| [  160.347916][  T226] Modules linked in: netdevsim
| [  160.348553][  T226] Tainted: [W]=WARN
[  160.348795][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 160.349058][ T226] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 160.349315][ T226] 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
[  160.350028][  T226] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  160.350290][  T226] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  160.350606][  T226] RDX: 0000000000000000 RSI: ffff88800df52c98 RDI: ffff88800b600b28
[  160.350894][  T226] RBP: ffffffff91923440 R08: 0000000000000000 R09: fffffbfff1efd83c
[  160.351197][  T226] R10: ffffffff8f7ec1e7 R11: ffff88800b600040 R12: 0000000000000000
[  160.351507][  T226] R13: ffff88800df52128 R14: ffff88800df52008 R15: ffff88800df52000
[  160.351808][  T226] FS:  00007f53f3ca5740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  160.352155][  T226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  160.352416][  T226] CR2: 0000558331f0b408 CR3: 0000000009be0003 CR4: 0000000000772ef0
[  160.352702][  T226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  160.353001][  T226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  160.353314][  T226] PKRU: 55555554
[  160.353473][  T226] Call Trace:
[  160.353630][  T226]  <TASK>
[ 160.353746][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 160.353965][ T226] ? __warn (kernel/panic.c:748) 
[ 160.354136][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 160.354342][ T226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 160.354583][ T226] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 160.354741][ T226] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 160.354938][ T226] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 160.355174][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 160.355389][ T226] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 160.355653][ T226] ? _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) 
[ 160.355857][ T226] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 160.356087][ T226] register_netdevice (net/core/dev.c:11003) 
[ 160.356303][ T226] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 160.356515][ T226] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 160.356729][ T226] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 160.357001][ T226] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 160.357279][ T226] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 160.357551][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 160.357760][ T226] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 160.357984][ T226] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 160.358250][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 160.358451][ T226] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 160.358666][ T226] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 160.358875][ T226] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 160.359094][ T226] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 160.359264][ T226] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 160.359466][ T226] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 160.359677][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 160.359884][ T226] ksys_write (fs/read_write.c:731) 
[ 160.360048][ T226] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 160.360269][ T226] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 160.360477][ T226] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  160.360720][  T226] RIP: 0033:0x7f53f3de6b77
[ 160.360922][ T226] 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
[  160.361604][  T226] RSP: 002b:00007ffeeb73c048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  160.361899][  T226] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f53f3de6b77
[  160.362199][  T226] RDX: 0000000000000002 RSI: 0000558332070130 RDI: 0000000000000001
[  160.362485][  T226] RBP: 0000558332070130 R08: 0000000000000000 R09: 00007f53f3e594e0
[  160.362776][  T226] R10: 00007f53f3e593e0 R11: 0000000000000246 R12: 0000000000000002
[  160.363074][  T226] R13: 00007f53f3ea2760 R14: 0000000000000002 R15: 00007f53f3e9d9c0
| [  161.890554][  T226] ------------[ cut here ]------------
| [ 161.890844][ T226] WARNING: CPU: 3 PID: 226 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) 
| [  161.891259][  T226] Modules linked in: netdevsim
| [  161.891852][  T226] Tainted: [W]=WARN
[  161.892021][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 161.892265][ T226] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 161.892511][ T226] 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
[  161.893200][  T226] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  161.893434][  T226] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  161.893716][  T226] RDX: 0000000000000000 RSI: ffff88800b7c2c98 RDI: ffff88800b600b28
[  161.894008][  T226] RBP: ffffffff91923440 R08: 0000000000000000 R09: fffffbfff1efd83c
[  161.894298][  T226] R10: ffffffff8f7ec1e7 R11: ffff88800b600040 R12: 0000000000000000
[  161.894587][  T226] R13: ffff88800b7c2128 R14: ffff88800b7c2008 R15: ffff88800b7c2000
[  161.894881][  T226] FS:  00007f53f3ca5740(0000) GS:ffff88802f580000(0000) knlGS:0000000000000000
[  161.895231][  T226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  161.895470][  T226] CR2: 00007fa27d2d4000 CR3: 0000000009be0002 CR4: 0000000000772ef0
[  161.895755][  T226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  161.896135][  T226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  161.896442][  T226] PKRU: 55555554
[  161.896583][  T226] Call Trace:
[  161.896722][  T226]  <TASK>
[ 161.896822][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 161.897034][ T226] ? __warn (kernel/panic.c:748) 
[ 161.897181][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 161.897385][ T226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 161.897591][ T226] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 161.897745][ T226] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 161.897957][ T226] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 161.898158][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 161.898357][ T226] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 161.898618][ T226] ? _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) 
[ 161.898816][ T226] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 161.899023][ T226] register_netdevice (net/core/dev.c:11003) 
[ 161.899219][ T226] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 161.899418][ T226] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 161.899626][ T226] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 161.899879][ T226] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 161.900165][ T226] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 161.900418][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 161.900612][ T226] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 161.900821][ T226] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 161.901067][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 161.901273][ T226] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 161.901471][ T226] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 161.901662][ T226] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 161.901862][ T226] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 161.902032][ T226] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 161.902233][ T226] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 161.902447][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 161.902656][ T226] ksys_write (fs/read_write.c:731) 
[ 161.902811][ T226] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 161.903032][ T226] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 161.903227][ T226] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  161.903478][  T226] RIP: 0033:0x7f53f3de6b77
[ 161.903673][ T226] 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
[  161.904351][  T226] RSP: 002b:00007ffeeb73c048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  161.904649][  T226] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f53f3de6b77
[  161.904925][  T226] RDX: 0000000000000002 RSI: 0000558332070130 RDI: 0000000000000001
[  161.905218][  T226] RBP: 0000558332070130 R08: 0000000000000000 R09: 00007f53f3e594e0
[  161.905515][  T226] R10: 00007f53f3e593e0 R11: 0000000000000246 R12: 0000000000000002
[  161.905797][  T226] R13: 00007f53f3ea2760 R14: 0000000000000002 R15: 00007f53f3e9d9c0
| [  163.461388][  T226] ------------[ cut here ]------------
| [ 163.461691][ T226] WARNING: CPU: 3 PID: 226 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) 
| [  163.462084][  T226] Modules linked in: netdevsim
| [  163.462698][  T226] Tainted: [W]=WARN
[  163.462846][  T226] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 163.463402][ T226] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 163.463646][ T226] 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
[  163.464303][  T226] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  163.464538][  T226] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  163.464815][  T226] RDX: 0000000000000000 RSI: ffff88800b3f2c98 RDI: ffff88800b600b28
[  163.465105][  T226] RBP: ffffffff91923440 R08: 0000000000000000 R09: fffffbfff1efd83c
[  163.465387][  T226] R10: ffffffff8f7ec1e7 R11: ffff88800b600040 R12: 0000000000000000
[  163.465671][  T226] R13: ffff88800b3f2128 R14: ffff88800b3f2008 R15: ffff88800b3f2000
[  163.465963][  T226] FS:  00007f53f3ca5740(0000) GS:ffff88802f580000(0000) knlGS:0000000000000000
[  163.466378][  T226] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  163.466617][  T226] CR2: 00007f53f3d9e890 CR3: 0000000009be0002 CR4: 0000000000772ef0
[  163.466910][  T226] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  163.467202][  T226] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  163.467482][  T226] PKRU: 55555554
[  163.467624][  T226] Call Trace:
[  163.467766][  T226]  <TASK>
[ 163.467863][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 163.468063][ T226] ? __warn (kernel/panic.c:748) 
[ 163.468216][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 163.468408][ T226] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 163.468618][ T226] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 163.468765][ T226] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 163.468966][ T226] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 163.469166][ T226] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 163.469362][ T226] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 163.469602][ T226] ? _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) 
[ 163.469795][ T226] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 163.470002][ T226] register_netdevice (net/core/dev.c:11003) 
[ 163.470213][ T226] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 163.470412][ T226] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 163.470618][ T226] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 163.470870][ T226] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 163.471150][ T226] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 163.471408][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 163.471614][ T226] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 163.471827][ T226] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 163.472097][ T226] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 163.472299][ T226] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 163.472501][ T226] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 163.472708][ T226] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 163.472917][ T226] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 163.473092][ T226] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 163.473302][ T226] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 163.473513][ T226] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 163.473720][ T226] ksys_write (fs/read_write.c:731) 
[ 163.473862][ T226] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 163.474069][ T226] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 163.474261][ T226] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  163.474490][  T226] RIP: 0033:0x7f53f3de6b77
[ 163.474685][ T226] 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
[  163.475336][  T226] RSP: 002b:00007ffeeb73c048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  163.475615][  T226] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f53f3de6b77
[  163.475894][  T226] RDX: 0000000000000002 RSI: 0000558332070130 RDI: 0000000000000001
[  163.476179][  T226] RBP: 0000558332070130 R08: 0000000000000000 R09: 00007f53f3e594e0
[  163.476453][  T226] R10: 00007f53f3e593e0 R11: 0000000000000246 R12: 0000000000000002


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