======================================
| 0
| xx__-> [   11.097329][  T228] ------------[ cut here ]------------
| [ 11.097792][ T228] WARNING: CPU: 2 PID: 228 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) 
| [   11.098213][  T228] Modules linked in: netdevsim
[   11.098846][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 11.099118][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.099373][ T228] 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
[   11.100061][  T228] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[   11.100351][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   11.100649][  T228] RDX: 0000000000000000 RSI: ffff88801443ac98 RDI: ffff888004f550a8
[   11.100941][  T228] RBP: ffffffff97f23440 R08: 0000000000000000 R09: fffffbfff2bbd83c
[   11.101283][  T228] R10: ffffffff95dec1e7 R11: ffff888004f545c0 R12: 0000000000000000
[   11.101592][  T228] R13: ffff88801443a128 R14: ffff88801443a008 R15: ffff88801443a000
[   11.101895][  T228] FS:  00007ff84a193740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   11.102254][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   11.102514][  T228] CR2: 000055883599247c CR3: 000000000a57c002 CR4: 0000000000772ef0
[   11.102888][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   11.103198][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   11.103492][  T228] PKRU: 55555554
[   11.103669][  T228] Call Trace:
[   11.103830][  T228]  <TASK>
[ 11.103946][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.104166][ T228] ? __warn (kernel/panic.c:748) 
[ 11.104331][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.104536][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 11.104745][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 11.104908][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 11.105123][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 11.105346][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.105556][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 11.105811][ T228] ? _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) 
[ 11.106025][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 11.106246][ T228] register_netdevice (net/core/dev.c:11003) 
[ 11.106462][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 11.106675][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 11.106896][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 11.107170][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 11.107439][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 11.107701][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 11.107905][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 11.108133][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 11.108389][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 11.108601][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 11.108810][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 11.109016][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 11.109238][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 11.109411][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 11.109626][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 11.109846][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 11.110071][ T228] ksys_write (fs/read_write.c:731) 
[ 11.110227][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 11.110452][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 11.110663][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   11.110908][  T228] RIP: 0033:0x7ff84a2d4b77
[ 11.111125][ T228] 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
[   11.111809][  T228] RSP: 002b:00007ffd68906e78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   11.112113][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff84a2d4b77
[   11.112415][  T228] RDX: 0000000000000002 RSI: 0000558835b7b130 RDI: 0000000000000001
[   11.112722][  T228] RBP: 0000558835b7b130 R08: 0000000000000000 R09: 00007ff84a3474e0
[   11.113021][  T228] R10: 00007ff84a3473e0 R11: 0000000000000246 R12: 0000000000000002
[   11.113338][  T228] R13: 00007ff84a390760 R14: 0000000000000002 R15: 00007ff84a38b9c0
| [  141.506197][  T228] ------------[ cut here ]------------
| [ 141.506451][ T228] WARNING: CPU: 3 PID: 228 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) 
| [  141.506833][  T228] Modules linked in: netdevsim
| [  141.507467][  T228] Tainted: [W]=WARN
[  141.507618][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 141.507856][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 141.508134][ T228] 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
[  141.508804][  T228] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  141.509046][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  141.509371][  T228] RDX: 0000000000000000 RSI: ffff8880145d2c98 RDI: ffff888004f550a8
[  141.509671][  T228] RBP: ffffffff97f23440 R08: 0000000000000000 R09: fffffbfff2bbd83c
[  141.509983][  T228] R10: ffffffff95dec1e7 R11: ffff888004f545c0 R12: 0000000000000000
[  141.510298][  T228] R13: ffff8880145d2128 R14: ffff8880145d2008 R15: ffff8880145d2000
[  141.510586][  T228] FS:  00007ff84a193740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  141.510921][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  141.511186][  T228] CR2: 00005588359b74f8 CR3: 000000000a57c001 CR4: 0000000000772ef0
[  141.511501][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  141.511811][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  141.512127][  T228] PKRU: 55555554
[  141.512283][  T228] Call Trace:
[  141.512432][  T228]  <TASK>
[ 141.512531][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 141.512729][ T228] ? __warn (kernel/panic.c:748) 
[ 141.512881][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 141.513088][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 141.513306][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 141.513547][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 141.513861][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 141.514142][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 141.514351][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 141.514598][ T228] ? _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) 
[ 141.514799][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 141.515000][ T228] register_netdevice (net/core/dev.c:11003) 
[ 141.515219][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 141.515427][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 141.515640][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 141.515892][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 141.516173][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 141.516431][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 141.516630][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 141.516838][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 141.517098][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 141.517315][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 141.517518][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 141.517720][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 141.517922][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 141.518091][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 141.518295][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 141.518504][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 141.518708][ T228] ksys_write (fs/read_write.c:731) 
[ 141.518856][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 141.519074][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 141.519283][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  141.519521][  T228] RIP: 0033:0x7ff84a2d4b77
[ 141.519719][ T228] 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
[  141.520405][  T228] RSP: 002b:00007ffd68905b08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  141.520699][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff84a2d4b77
[  141.520992][  T228] RDX: 0000000000000002 RSI: 0000558835b7b130 RDI: 0000000000000001
[  141.521296][  T228] RBP: 0000558835b7b130 R08: 0000000000000000 R09: 00007ff84a3474e0
[  141.521585][  T228] R10: 00007ff84a3473e0 R11: 0000000000000246 R12: 0000000000000002
[  141.521874][  T228] R13: 00007ff84a390760 R14: 0000000000000002 R15: 00007ff84a38b9c0
| [  143.039396][  T228] ------------[ cut here ]------------
| [ 143.039638][ T228] WARNING: CPU: 3 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  143.040022][  T228] Modules linked in: netdevsim
| [  143.041885][  T228] Tainted: [W]=WARN
[  143.042035][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 143.042469][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 143.042722][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  143.043555][  T228] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  143.043818][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  143.044151][  T228] RDX: 0000000000000000 RSI: ffff88801469ac98 RDI: ffff888004f550a8
[  143.044443][  T228] RBP: ffffffff97f23440 R08: 0000000000000000 R09: fffffbfff2bbd83c
[  143.044730][  T228] R10: ffffffff95dec1e7 R11: ffff888004f545c0 R12: 0000000000000000
[  143.045014][  T228] R13: ffff88801469a128 R14: ffff88801469a008 R15: ffff88801469a000
[  143.045313][  T228] FS:  00007ff84a193740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  143.045651][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  143.045894][  T228] CR2: 000055883599247c CR3: 000000000a57c003 CR4: 0000000000772ef0
[  143.046200][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  143.046490][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  143.046779][  T228] PKRU: 55555554
[  143.046926][  T228] Call Trace:
[  143.047085][  T228]  <TASK>
[ 143.047191][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 143.047403][ T228] ? __warn (kernel/panic.c:748) 
[ 143.047568][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 143.047772][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 143.047977][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 143.048145][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 143.048343][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 143.048551][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 143.048753][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 143.048999][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 143.049231][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 143.049435][ T228] register_netdevice (net/core/dev.c:11003) 
[ 143.049643][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 143.049846][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 143.050073][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 143.050327][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 143.050593][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 143.050940][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 143.051294][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 143.051641][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 143.051906][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 143.052115][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 143.052319][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 143.052517][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 143.052718][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 143.052892][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 143.053104][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 143.053327][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 143.053531][ T228] ksys_write (fs/read_write.c:731) 
[ 143.053683][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 143.053886][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 143.054095][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  143.054353][  T228] RIP: 0033:0x7ff84a2d4b77
[ 143.054561][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  143.055263][  T228] RSP: 002b:00007ffd68905b08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  143.055571][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff84a2d4b77
[  143.055861][  T228] RDX: 0000000000000002 RSI: 0000558835b7b130 RDI: 0000000000000001
[  143.056151][  T228] RBP: 0000558835b7b130 R08: 0000000000000000 R09: 00007ff84a3474e0
[  143.056435][  T228] R10: 00007ff84a3473e0 R11: 0000000000000246 R12: 0000000000000002
[  143.056723][  T228] R13: 00007ff84a390760 R14: 0000000000000002 R15: 00007ff84a38b9c0
| [  144.525803][  T228] ------------[ cut here ]------------
| [ 144.526129][ T228] WARNING: CPU: 2 PID: 228 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) 
| [  144.526558][  T228] Modules linked in: netdevsim
| [  144.527313][  T228] Tainted: [W]=WARN
[  144.527487][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 144.527761][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 144.528044][ T228] 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
[  144.528775][  T228] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  144.529066][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  144.529397][  T228] RDX: 0000000000000000 RSI: ffff888014442c98 RDI: ffff888004f550a8
[  144.529718][  T228] RBP: ffffffff97f23440 R08: 0000000000000000 R09: fffffbfff2bbd83c
[  144.530065][  T228] R10: ffffffff95dec1e7 R11: ffff888004f545c0 R12: 0000000000000000
[  144.530391][  T228] R13: ffff888014442128 R14: ffff888014442008 R15: ffff888014442000
[  144.530712][  T228] FS:  00007ff84a193740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  144.531100][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  144.531381][  T228] CR2: 00007f4af9702270 CR3: 000000000a57c006 CR4: 0000000000772ef0
[  144.531701][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  144.532013][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  144.532327][  T228] PKRU: 55555554
[  144.532493][  T228] Call Trace:
[  144.532655][  T228]  <TASK>
[ 144.532776][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 144.532987][ T228] ? __warn (kernel/panic.c:748) 
[ 144.533170][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 144.533386][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 144.533604][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 144.533773][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 144.533986][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 144.534227][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 144.534446][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 144.534720][ T228] ? _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) 
[ 144.534935][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 144.535172][ T228] register_netdevice (net/core/dev.c:11003) 
[ 144.535391][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 144.535614][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 144.535847][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 144.536131][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 144.536417][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 144.536689][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 144.536906][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 144.537143][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 144.537414][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 144.537629][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 144.537840][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 144.538068][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 144.538288][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 144.538461][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 144.538679][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 144.538907][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 144.539160][ T228] ksys_write (fs/read_write.c:731) 
[ 144.539335][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 144.539570][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 144.539792][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  144.540072][  T228] RIP: 0033:0x7ff84a2d4b77
[ 144.540299][ T228] 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
[  144.541018][  T228] RSP: 002b:00007ffd68905b08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  144.541359][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff84a2d4b77
[  144.541691][  T228] RDX: 0000000000000002 RSI: 0000558835b7b130 RDI: 0000000000000001
[  144.542008][  T228] RBP: 0000558835b7b130 R08: 0000000000000000 R09: 00007ff84a3474e0
[  144.542351][  T228] R10: 00007ff84a3473e0 R11: 0000000000000246 R12: 0000000000000002
[  144.542682][  T228] R13: 00007ff84a390760 R14: 0000000000000002 R15: 00007ff84a38b9c0
| [  146.037234][  T228] ------------[ cut here ]------------
| [ 146.037534][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  146.037970][  T228] Modules linked in: netdevsim
| [  146.040071][  T228] Tainted: [W]=WARN
[  146.040252][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 146.040512][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 146.040775][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  146.041514][  T228] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  146.041785][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  146.042109][  T228] RDX: 0000000000000000 RSI: ffff888014472c98 RDI: ffff888004f550a8
[  146.042428][  T228] RBP: ffffffff97f23440 R08: 0000000000000000 R09: fffffbfff2bbd83c
[  146.042732][  T228] R10: ffffffff95dec1e7 R11: ffff888004f545c0 R12: 0000000000000000
[  146.043044][  T228] R13: ffff888014472128 R14: ffff888014472008 R15: ffff888014472000
[  146.043366][  T228] FS:  00007ff84a193740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  146.043713][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  146.043969][  T228] CR2: 00005588359c4018 CR3: 000000000a57c006 CR4: 0000000000772ef0
[  146.044297][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  146.044607][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  146.044914][  T228] PKRU: 55555554
[  146.045088][  T228] Call Trace:
[  146.045254][  T228]  <TASK>
[ 146.045370][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 146.045584][ T228] ? __warn (kernel/panic.c:748) 
[ 146.045757][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 146.045975][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 146.046205][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 146.046375][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 146.046588][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 146.046815][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 146.047038][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 146.047319][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 146.047548][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 146.047766][ T228] register_netdevice (net/core/dev.c:11003) 
[ 146.047986][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 146.048223][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 146.048471][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 146.048743][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 146.049036][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 146.049337][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 146.049553][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 146.049778][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 146.050063][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 146.050283][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 146.050506][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 146.050722][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 146.050955][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 146.051145][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 146.051369][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 146.051591][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 146.051818][ T228] ksys_write (fs/read_write.c:731) 
[ 146.051988][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 146.052234][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 146.052453][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  146.052713][  T228] RIP: 0033:0x7ff84a2d4b77
[ 146.052944][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  146.053677][  T228] RSP: 002b:00007ffd68905b08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  146.053990][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff84a2d4b77
[  146.054318][  T228] RDX: 0000000000000002 RSI: 0000558835b7b130 RDI: 0000000000000001
[  146.054638][  T228] RBP: 0000558835b7b130 R08: 0000000000000000 R09: 00007ff84a3474e0
[  146.054960][  T228] R10: 00007ff84a3473e0 R11: 0000000000000246 R12: 0000000000000002
[  146.055290][  T228] R13: 00007ff84a390760 R14: 0000000000000002 R15: 00007ff84a38b9c0
| [  147.509004][  T228] ------------[ cut here ]------------
| [ 147.509272][ T228] WARNING: CPU: 3 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  147.509660][  T228] Modules linked in: netdevsim
| [  147.510255][  T228] Tainted: [W]=WARN
[  147.510406][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 147.510641][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 147.510887][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  147.511560][  T228] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  147.511804][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  147.512095][  T228] RDX: 0000000000000000 RSI: ffff8880146a2c98 RDI: ffff888004f550a8
[  147.512375][  T228] RBP: ffffffff97f23440 R08: 0000000000000000 R09: fffffbfff2bbd83c
[  147.512662][  T228] R10: ffffffff95dec1e7 R11: ffff888004f545c0 R12: 0000000000000000
[  147.512947][  T228] R13: ffff8880146a2128 R14: ffff8880146a2008 R15: ffff8880146a2000
[  147.513243][  T228] FS:  00007ff84a193740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  147.513572][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  147.513809][  T228] CR2: 00005588359b75e8 CR3: 000000000a57c002 CR4: 0000000000772ef0
[  147.514103][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  147.514393][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  147.514681][  T228] PKRU: 55555554
[  147.514827][  T228] Call Trace:
[  147.514968][  T228]  <TASK>
[ 147.515092][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 147.515420][ T228] ? __warn (kernel/panic.c:748) 
[ 147.515670][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 147.515890][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 147.516102][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 147.516260][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 147.516451][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 147.516667][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 147.516878][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 147.517144][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 147.517351][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 147.517548][ T228] register_netdevice (net/core/dev.c:11003) 
[ 147.517751][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 147.517957][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 147.518184][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 147.518440][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 147.518717][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 147.518981][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 147.519201][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 147.519404][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 147.519665][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 147.519873][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 147.520074][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 147.520287][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 147.520490][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 147.520650][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 147.520857][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 147.521072][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 147.521277][ T228] ksys_write (fs/read_write.c:731) 
[ 147.521430][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 147.521632][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 147.521820][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  147.522062][  T228] RIP: 0033:0x7ff84a2d4b77
[ 147.522264][ T228] 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
[  147.522922][  T228] RSP: 002b:00007ffd68905b08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  147.523227][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff84a2d4b77
[  147.523536][  T228] RDX: 0000000000000002 RSI: 0000558835b7b130 RDI: 0000000000000001
[  147.523825][  T228] RBP: 0000558835b7b130 R08: 0000000000000000 R09: 00007ff84a3474e0
[  147.524112][  T228] R10: 00007ff84a3473e0 R11: 0000000000000246 R12: 0000000000000002
[  147.524416][  T228] R13: 00007ff84a390760 R14: 0000000000000002 R15: 00007ff84a38b9c0
| [  149.064665][  T228] ------------[ cut here ]------------
| [ 149.064901][ T228] WARNING: CPU: 3 PID: 228 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) 
| [  149.065307][  T228] Modules linked in: netdevsim
| [  149.065890][  T228] Tainted: [W]=WARN
[  149.066039][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 149.066291][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 149.066544][ T228] 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
[  149.067218][  T228] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  149.067482][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  149.067796][  T228] RDX: 0000000000000000 RSI: ffff88801443ac98 RDI: ffff888004f550a8
[  149.068115][  T228] RBP: ffffffff97f23440 R08: 0000000000000000 R09: fffffbfff2bbd83c
[  149.068427][  T228] R10: ffffffff95dec1e7 R11: ffff888004f545c0 R12: 0000000000000000
[  149.068738][  T228] R13: ffff88801443a128 R14: ffff88801443a008 R15: ffff88801443a000
[  149.069071][  T228] FS:  00007ff84a193740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  149.069442][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  149.069703][  T228] CR2: 00005588359c4018 CR3: 000000000a57c002 CR4: 0000000000772ef0
[  149.070015][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  149.070336][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  149.070650][  T228] PKRU: 55555554
[  149.070805][  T228] Call Trace:
[  149.070969][  T228]  <TASK>
[ 149.071088][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 149.071299][ T228] ? __warn (kernel/panic.c:748) 
[ 149.071463][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 149.071673][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 149.071892][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 149.072067][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 149.072286][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 149.072510][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 149.072725][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 149.072991][ T228] ? _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) 
[ 149.073217][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 149.073430][ T228] register_netdevice (net/core/dev.c:11003) 
[ 149.073648][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 149.073871][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 149.074111][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 149.074386][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 149.074671][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 149.074943][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 149.075169][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 149.075398][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 149.075665][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 149.075874][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 149.076091][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 149.076306][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 149.076523][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 149.076692][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 149.076913][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 149.077143][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 149.077364][ T228] ksys_write (fs/read_write.c:731) 
[ 149.077526][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 149.077748][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 149.077960][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  149.078229][  T228] RIP: 0033:0x7ff84a2d4b77
[ 149.078449][ T228] 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
[  149.079185][  T228] RSP: 002b:00007ffd68905b08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  149.079503][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff84a2d4b77
[  149.079827][  T228] RDX: 0000000000000002 RSI: 0000558835b7b130 RDI: 0000000000000001
[  149.080146][  T228] RBP: 0000558835b7b130 R08: 0000000000000000 R09: 00007ff84a3474e0
[  149.080458][  T228] R10: 00007ff84a3473e0 R11: 0000000000000246 R12: 0000000000000002
[  149.080768][  T228] R13: 00007ff84a390760 R14: 0000000000000002 R15: 00007ff84a38b9c0
| [  150.571845][  T228] ------------[ cut here ]------------
| [ 150.572134][ T228] WARNING: CPU: 3 PID: 228 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) 
| [  150.572558][  T228] Modules linked in: netdevsim
| [  150.573357][  T228] Tainted: [W]=WARN
[  150.573516][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 150.573779][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 150.574040][ T228] 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
[  150.575019][  T228] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  150.575459][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  150.575777][  T228] RDX: 0000000000000000 RSI: ffff8880145d2c98 RDI: ffff888004f550a8
[  150.576192][  T228] RBP: ffffffff97f23440 R08: 0000000000000000 R09: fffffbfff2bbd83c
[  150.576507][  T228] R10: ffffffff95dec1e7 R11: ffff888004f545c0 R12: 0000000000000000
[  150.576819][  T228] R13: ffff8880145d2128 R14: ffff8880145d2008 R15: ffff8880145d2000
[  150.577234][  T228] FS:  00007ff84a193740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  150.577593][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  150.577855][  T228] CR2: 000055883599247c CR3: 000000000a57c002 CR4: 0000000000772ef0
[  150.578254][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  150.578566][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  150.578872][  T228] PKRU: 55555554
[  150.579031][  T228] Call Trace:
[  150.579304][  T228]  <TASK>
[ 150.579411][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 150.579617][ T228] ? __warn (kernel/panic.c:748) 
[ 150.579782][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 150.579991][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 150.580361][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 150.580527][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 150.580736][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 150.580961][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 150.581351][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 150.581625][ T228] ? _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) 
[ 150.581843][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 150.582224][ T228] register_netdevice (net/core/dev.c:11003) 
[ 150.582449][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 150.582680][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 150.582914][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 150.583377][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 150.583664][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 150.583934][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 150.584248][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 150.584464][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 150.584726][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 150.584929][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 150.585147][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 150.585358][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 150.585574][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 150.585741][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 150.585945][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 150.586173][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 150.586393][ T228] ksys_write (fs/read_write.c:731) 
[ 150.586552][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 150.586771][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 150.586981][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  150.587249][  T228] RIP: 0033:0x7ff84a2d4b77
[ 150.587463][ T228] 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
[  150.588176][  T228] RSP: 002b:00007ffd68905b08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  150.588495][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff84a2d4b77
[  150.588812][  T228] RDX: 0000000000000002 RSI: 0000558835b7b130 RDI: 0000000000000001
[  150.589140][  T228] RBP: 0000558835b7b130 R08: 0000000000000000 R09: 00007ff84a3474e0
[  150.589448][  T228] R10: 00007ff84a3473e0 R11: 0000000000000246 R12: 0000000000000002
[  150.589754][  T228] R13: 00007ff84a390760 R14: 0000000000000002 R15: 00007ff84a38b9c0
| [  152.117196][  T228] ------------[ cut here ]------------
| [ 152.117438][ T228] WARNING: CPU: 3 PID: 228 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) 
| [  152.117828][  T228] Modules linked in: netdevsim
| [  152.118425][  T228] Tainted: [W]=WARN
[  152.118575][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 152.118813][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 152.119074][ T228] 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
[  152.119733][  T228] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  152.119980][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  152.120358][  T228] RDX: 0000000000000000 RSI: ffff88801469ac98 RDI: ffff888004f550a8
[  152.120639][  T228] RBP: ffffffff97f23440 R08: 0000000000000000 R09: fffffbfff2bbd83c
[  152.120924][  T228] R10: ffffffff95dec1e7 R11: ffff888004f545c0 R12: 0000000000000000
[  152.121230][  T228] R13: ffff88801469a128 R14: ffff88801469a008 R15: ffff88801469a000
[  152.121520][  T228] FS:  00007ff84a193740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  152.121851][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  152.122101][  T228] CR2: 0000558835b51de8 CR3: 000000000a57c004 CR4: 0000000000772ef0
[  152.122415][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  152.122710][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  152.123006][  T228] PKRU: 55555554
[  152.123162][  T228] Call Trace:
[  152.123314][  T228]  <TASK>
[ 152.123420][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 152.123614][ T228] ? __warn (kernel/panic.c:748) 
[ 152.123765][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 152.123956][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 152.124179][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 152.124339][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 152.124529][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 152.124731][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 152.124949][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 152.125215][ T228] ? _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) 
[ 152.125424][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 152.125628][ T228] register_netdevice (net/core/dev.c:11003) 
[ 152.125829][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 152.126034][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 152.126267][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 152.126516][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 152.126776][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 152.127025][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 152.127244][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 152.127455][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 152.127704][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 152.127893][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 152.128097][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 152.128296][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 152.128522][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 152.128782][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 152.129141][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 152.129488][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 152.129734][ T228] ksys_write (fs/read_write.c:731) 
[ 152.129883][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 152.130111][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 152.130309][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  152.130567][  T228] RIP: 0033:0x7ff84a2d4b77
[ 152.130762][ T228] 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
[  152.131433][  T228] RSP: 002b:00007ffd68905b08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  152.131727][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff84a2d4b77
[  152.132017][  T228] RDX: 0000000000000002 RSI: 0000558835b7b130 RDI: 0000000000000001
[  152.132313][  T228] RBP: 0000558835b7b130 R08: 0000000000000000 R09: 00007ff84a3474e0
[  152.132600][  T228] R10: 00007ff84a3473e0 R11: 0000000000000246 R12: 0000000000000002
[  152.132893][  T228] R13: 00007ff84a390760 R14: 0000000000000002 R15: 00007ff84a38b9c0
| [  153.582831][  T228] ------------[ cut here ]------------
| [ 153.583085][ T228] WARNING: CPU: 3 PID: 228 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) 
| [  153.583477][  T228] Modules linked in: netdevsim
| [  153.584074][  T228] Tainted: [W]=WARN
[  153.584230][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 153.584476][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 153.584719][ T228] 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
[  153.585474][  T228] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  153.585717][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  153.586015][  T228] RDX: 0000000000000000 RSI: ffff888014442c98 RDI: ffff888004f550a8
[  153.586313][  T228] RBP: ffffffff97f23440 R08: 0000000000000000 R09: fffffbfff2bbd83c
[  153.586604][  T228] R10: ffffffff95dec1e7 R11: ffff888004f545c0 R12: 0000000000000000
[  153.586906][  T228] R13: ffff888014442128 R14: ffff888014442008 R15: ffff888014442000
[  153.587208][  T228] FS:  00007ff84a193740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  153.587551][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  153.587793][  T228] CR2: 000055883599247c CR3: 000000000a57c004 CR4: 0000000000772ef0
[  153.588107][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  153.588410][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  153.588700][  T228] PKRU: 55555554
[  153.588851][  T228] Call Trace:
[  153.588997][  T228]  <TASK>
[ 153.589124][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 153.589323][ T228] ? __warn (kernel/panic.c:748) 
[ 153.589477][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 153.589682][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 153.589897][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 153.590045][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 153.590268][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 153.590475][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 153.590688][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 153.590948][ T228] ? _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) 
[ 153.591158][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 153.591365][ T228] register_netdevice (net/core/dev.c:11003) 
[ 153.591566][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 153.591774][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 153.591987][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 153.592262][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 153.592537][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 153.592795][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 153.592994][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 153.593207][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 153.593457][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 153.593647][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 153.593841][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 153.594036][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 153.594247][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 153.594402][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 153.594614][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 153.594822][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 153.595022][ T228] ksys_write (fs/read_write.c:731) 
[ 153.595182][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 153.595396][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 153.595595][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  153.595829][  T228] RIP: 0033:0x7ff84a2d4b77
[ 153.596030][ T228] 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
[  153.596730][  T228] RSP: 002b:00007ffd68905b08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  153.597034][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff84a2d4b77
[  153.597347][  T228] RDX: 0000000000000002 RSI: 0000558835b7b130 RDI: 0000000000000001
[  153.597649][  T228] RBP: 0000558835b7b130 R08: 0000000000000000 R09: 00007ff84a3474e0
[  153.597934][  T228] R10: 00007ff84a3473e0 R11: 0000000000000246 R12: 0000000000000002
[  153.598237][  T228] R13: 00007ff84a390760 R14: 0000000000000002 R15: 00007ff84a38b9c0
| [  155.133988][  T228] ------------[ cut here ]------------
| [ 155.134325][ T228] WARNING: CPU: 2 PID: 228 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) 
| [  155.134786][  T228] Modules linked in: netdevsim
| [  155.135691][  T228] Tainted: [W]=WARN
[  155.135992][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 155.136392][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 155.136751][ T228] 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
[  155.137627][  T228] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  155.138022][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  155.138536][  T228] RDX: 0000000000000000 RSI: ffff888014472c98 RDI: ffff888004f550a8
[  155.139067][  T228] RBP: ffffffff97f23440 R08: 0000000000000000 R09: fffffbfff2bbd83c
[  155.139582][  T228] R10: ffffffff95dec1e7 R11: ffff888004f545c0 R12: 0000000000000000
[  155.140077][  T228] R13: ffff888014472128 R14: ffff888014472008 R15: ffff888014472000
[  155.140472][  T228] FS:  00007ff84a193740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  155.140859][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  155.141159][  T228] CR2: 000055883599247c CR3: 000000000a57c001 CR4: 0000000000772ef0
[  155.141503][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  155.141832][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  155.142166][  T228] PKRU: 55555554
[  155.142337][  T228] Call Trace:
[  155.142508][  T228]  <TASK>
[ 155.142628][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 155.142854][ T228] ? __warn (kernel/panic.c:748) 
[ 155.143032][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 155.143272][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 155.143499][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 155.143667][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 155.143893][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 155.144146][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 155.144380][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 155.144665][ T228] ? _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) 
[ 155.144889][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 155.145130][ T228] register_netdevice (net/core/dev.c:11003) 
[ 155.145356][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 155.145585][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 155.145821][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 155.146120][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 155.146412][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 155.146694][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 155.146924][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 155.147166][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 155.147446][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 155.147672][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 155.147887][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 155.148119][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 155.148354][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 155.148535][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 155.148756][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 155.148984][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 155.149244][ T228] ksys_write (fs/read_write.c:731) 
[ 155.149425][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 155.149653][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 155.149883][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  155.150166][  T228] RIP: 0033:0x7ff84a2d4b77
[ 155.150394][ T228] 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
[  155.151121][  T228] RSP: 002b:00007ffd68905b08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  155.151461][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff84a2d4b77
[  155.151797][  T228] RDX: 0000000000000002 RSI: 0000558835b7b130 RDI: 0000000000000001
[  155.152138][  T228] RBP: 0000558835b7b130 R08: 0000000000000000 R09: 00007ff84a3474e0
[  155.152473][  T228] R10: 00007ff84a3473e0 R11: 0000000000000246 R12: 0000000000000002
[  155.152790][  T228] R13: 00007ff84a390760 R14: 0000000000000002 R15: 00007ff84a38b9c0
| [  159.158316][  T228] ------------[ cut here ]------------
| [ 159.158732][ T228] WARNING: CPU: 2 PID: 228 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) 
| [  159.159290][  T228] Modules linked in: netdevsim
| [  159.160037][  T228] Tainted: [W]=WARN
[  159.160224][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 159.160492][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 159.160767][ T228] 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
[  159.161484][  T228] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  159.161765][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  159.162098][  T228] RDX: 0000000000000000 RSI: ffff88801443ac98 RDI: ffff888004f550a8
[  159.162420][  T228] RBP: ffffffff97f23440 R08: 0000000000000000 R09: fffffbfff2bbd83c
[  159.162741][  T228] R10: ffffffff95dec1e7 R11: ffff888004f545c0 R12: 0000000000000000
[  159.163070][  T228] R13: ffff88801443a128 R14: ffff88801443a008 R15: ffff88801443a000
[  159.163392][  T228] FS:  00007ff84a193740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  159.163761][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  159.164031][  T228] CR2: 00007ff84a28c890 CR3: 000000000a57c004 CR4: 0000000000772ef0
[  159.164369][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  159.164690][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  159.165008][  T228] PKRU: 55555554
[  159.165186][  T228] Call Trace:
[  159.165357][  T228]  <TASK>
[ 159.165476][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 159.165706][ T228] ? __warn (kernel/panic.c:748) 
[ 159.165881][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 159.166116][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 159.166344][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 159.166520][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 159.166741][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 159.166977][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 159.167219][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 159.167501][ T228] ? _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) 
[ 159.167733][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 159.167963][ T228] register_netdevice (net/core/dev.c:11003) 
[ 159.168198][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 159.168428][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 159.168671][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 159.168952][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 159.169309][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 159.169594][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 159.169815][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 159.170059][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 159.170346][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 159.170573][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 159.170799][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 159.171022][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 159.171255][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 159.171436][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 159.171662][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 159.171895][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 159.172137][ T228] ksys_write (fs/read_write.c:731) 
[ 159.172314][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 159.172548][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 159.172764][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  159.173020][  T228] RIP: 0033:0x7ff84a2d4b77
[ 159.173251][ T228] 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
[  159.173947][  T228] RSP: 002b:00007ffd68905268 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  159.174269][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff84a2d4b77
[  159.174575][  T228] RDX: 0000000000000002 RSI: 0000558835b7b130 RDI: 0000000000000001
[  159.174884][  T228] RBP: 0000558835b7b130 R08: 0000000000000000 R09: 00007ff84a3474e0
[  159.175203][  T228] R10: 00007ff84a3473e0 R11: 0000000000000246 R12: 0000000000000002
[  159.175511][  T228] R13: 00007ff84a390760 R14: 0000000000000002 R15: 00007ff84a38b9c0
| [  160.765151][  T228] ------------[ cut here ]------------
| [ 160.765483][ T228] WARNING: CPU: 0 PID: 228 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) 
| [  160.765899][  T228] Modules linked in: netdevsim
| [  160.766552][  T228] Tainted: [W]=WARN
[  160.766712][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 160.766971][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 160.767249][ T228] 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
[  160.767974][  T228] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  160.768249][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  160.768564][  T228] RDX: 0000000000000000 RSI: ffff8880146a2c98 RDI: ffff888004f550a8
[  160.768895][  T228] RBP: ffffffff97f23440 R08: 0000000000000000 R09: fffffbfff2bbd83c
[  160.769226][  T228] R10: ffffffff95dec1e7 R11: ffff888004f545c0 R12: 0000000000000000
[  160.769534][  T228] R13: ffff8880146a2128 R14: ffff8880146a2008 R15: ffff8880146a2000
[  160.769852][  T228] FS:  00007ff84a193740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  160.770351][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  160.770618][  T228] CR2: 00007fbdf0f04a00 CR3: 000000000a57c006 CR4: 0000000000772ef0
[  160.770931][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  160.771356][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  160.771675][  T228] PKRU: 55555554
[  160.771837][  T228] Call Trace:
[  160.771996][  T228]  <TASK>
[ 160.772115][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 160.772326][ T228] ? __warn (kernel/panic.c:748) 
[ 160.772491][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 160.772706][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 160.772924][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 160.773098][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 160.773311][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 160.773532][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 160.773754][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 160.774025][ T228] ? _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) 
[ 160.774245][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 160.774459][ T228] register_netdevice (net/core/dev.c:11003) 
[ 160.774675][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 160.774900][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 160.775131][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 160.775404][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 160.775692][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 160.775973][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 160.776199][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 160.776418][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 160.776688][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 160.776895][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 160.777118][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 160.777332][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 160.777548][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 160.777721][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 160.777937][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 160.778156][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 160.778366][ T228] ksys_write (fs/read_write.c:731) 
[ 160.778528][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 160.778743][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 160.778950][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  160.779215][  T228] RIP: 0033:0x7ff84a2d4b77
[ 160.779433][ T228] 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
[  160.780143][  T228] RSP: 002b:00007ffd68905268 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  160.780453][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff84a2d4b77
[  160.780761][  T228] RDX: 0000000000000002 RSI: 0000558835b7b130 RDI: 0000000000000001
[  160.781075][  T228] RBP: 0000558835b7b130 R08: 0000000000000000 R09: 00007ff84a3474e0
[  160.781376][  T228] R10: 00007ff84a3473e0 R11: 0000000000000246 R12: 0000000000000002
[  160.781678][  T228] R13: 00007ff84a390760 R14: 0000000000000002 R15: 00007ff84a38b9c0
| [  162.336774][  T228] ------------[ cut here ]------------
| [ 162.337160][ T228] WARNING: CPU: 1 PID: 228 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) 
| [  162.337549][  T228] Modules linked in: netdevsim
| [  162.338725][  T228] Tainted: [W]=WARN
[  162.338877][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 162.339143][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 162.339394][ T228] 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
[  162.340074][  T228] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  162.340327][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  162.340619][  T228] RDX: 0000000000000000 RSI: ffff8880145d2c98 RDI: ffff888004f550a8
[  162.340904][  T228] RBP: ffffffff97f23440 R08: 0000000000000000 R09: fffffbfff2bbd83c
[  162.341201][  T228] R10: ffffffff95dec1e7 R11: ffff888004f545c0 R12: 0000000000000000
[  162.341515][  T228] R13: ffff8880145d2128 R14: ffff8880145d2008 R15: ffff8880145d2000
[  162.341814][  T228] FS:  00007ff84a193740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  162.342164][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  162.342409][  T228] CR2: 0000558835a20088 CR3: 000000000a57c003 CR4: 0000000000772ef0
[  162.342703][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  162.342993][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  162.343299][  T228] PKRU: 55555554
[  162.343539][  T228] Call Trace:
[  162.343688][  T228]  <TASK>
[ 162.343793][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 162.343990][ T228] ? __warn (kernel/panic.c:748) 
[ 162.344171][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 162.344373][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 162.344580][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 162.344736][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 162.344932][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 162.345153][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 162.345361][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 162.345618][ T228] ? _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) 
[ 162.345825][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 162.346027][ T228] register_netdevice (net/core/dev.c:11003) 
[ 162.346248][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 162.346459][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 162.346669][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 162.346923][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 162.347207][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 162.347459][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 162.347655][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 162.347861][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 162.348127][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 162.348322][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 162.348516][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 162.348775][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 162.348979][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 162.349163][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 162.349366][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 162.349573][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 162.349783][ T228] ksys_write (fs/read_write.c:731) 
[ 162.349936][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 162.350157][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 162.350355][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  162.350597][  T228] RIP: 0033:0x7ff84a2d4b77
[ 162.350799][ T228] 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
[  162.351497][  T228] RSP: 002b:00007ffd68905268 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  162.351798][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff84a2d4b77
[  162.352106][  T228] RDX: 0000000000000002 RSI: 0000558835b7b130 RDI: 0000000000000001
[  162.352388][  T228] RBP: 0000558835b7b130 R08: 0000000000000000 R09: 00007ff84a3474e0
[  162.352669][  T228] R10: 00007ff84a3473e0 R11: 0000000000000246 R12: 0000000000000002
[  162.352959][  T228] R13: 00007ff84a390760 R14: 0000000000000002 R15: 00007ff84a38b9c0
| [  163.899449][  T228] ------------[ cut here ]------------
| [ 163.899760][ T228] WARNING: CPU: 0 PID: 228 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) 
| [  163.900199][  T228] Modules linked in: netdevsim
| [  163.900822][  T228] Tainted: [W]=WARN
[  163.900978][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 163.901236][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 163.901493][ T228] 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
[  163.902190][  T228] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  163.902446][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  163.902744][  T228] RDX: 0000000000000000 RSI: ffff888014442c98 RDI: ffff888004f550a8
[  163.903040][  T228] RBP: ffffffff97f23440 R08: 0000000000000000 R09: fffffbfff2bbd83c
[  163.903346][  T228] R10: ffffffff95dec1e7 R11: ffff888004f545c0 R12: 0000000000000000
[  163.903642][  T228] R13: ffff888014442128 R14: ffff888014442008 R15: ffff888014442000
[  163.903935][  T228] FS:  00007ff84a193740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  163.904305][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  163.904556][  T228] CR2: 00007f66bb662000 CR3: 000000000a57c002 CR4: 0000000000772ef0
[  163.904949][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  163.905258][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  163.905563][  T228] PKRU: 55555554
[  163.905716][  T228] Call Trace:
[  163.905866][  T228]  <TASK>
[ 163.905970][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 163.906186][ T228] ? __warn (kernel/panic.c:748) 
[ 163.906344][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 163.906549][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 163.906759][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 163.906914][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 163.907126][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 163.907342][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 163.907552][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 163.907804][ T228] ? _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) 
[ 163.908013][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 163.908226][ T228] register_netdevice (net/core/dev.c:11003) 
[ 163.908437][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 163.908647][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 163.908867][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 163.909149][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 163.909422][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 163.909677][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 163.909885][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 163.910108][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 163.910363][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 163.910568][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 163.910770][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 163.910972][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 163.911185][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 163.911353][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 163.911556][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 163.911767][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 163.911978][ T228] ksys_write (fs/read_write.c:731) 
[ 163.912142][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 163.912354][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 163.912557][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  163.912803][  T228] RIP: 0033:0x7ff84a2d4b77
[ 163.913012][ T228] 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
[  163.913709][  T228] RSP: 002b:00007ffd68905268 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  163.914009][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff84a2d4b77
[  163.914319][  T228] RDX: 0000000000000002 RSI: 0000558835b7b130 RDI: 0000000000000001
[  163.914612][  T228] RBP: 0000558835b7b130 R08: 0000000000000000 R09: 00007ff84a3474e0
[  163.914910][  T228] R10: 00007ff84a3473e0 R11: 0000000000000246 R12: 0000000000000002
[  163.915214][  T228] R13: 00007ff84a390760 R14: 0000000000000002 R15: 00007ff84a38b9c0
| [  165.511764][  T228] ------------[ cut here ]------------
| [ 165.512093][ T228] WARNING: CPU: 0 PID: 228 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) 
| [  165.512496][  T228] Modules linked in: netdevsim
| [  165.513116][  T228] Tainted: [W]=WARN
[  165.513268][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 165.513510][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 165.513768][ T228] 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
[  165.514473][  T228] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  165.514727][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  165.515027][  T228] RDX: 0000000000000000 RSI: ffff88801469ac98 RDI: ffff888004f550a8
[  165.515426][  T228] RBP: ffffffff97f23440 R08: 0000000000000000 R09: fffffbfff2bbd83c
[  165.515725][  T228] R10: ffffffff95dec1e7 R11: ffff888004f545c0 R12: 0000000000000000
[  165.516019][  T228] R13: ffff88801469a128 R14: ffff88801469a008 R15: ffff88801469a000
[  165.516327][  T228] FS:  00007ff84a193740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  165.516678][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  165.516929][  T228] CR2: 0000558835b5d258 CR3: 000000000a57c002 CR4: 0000000000772ef0
[  165.517244][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  165.517551][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  165.517856][  T228] PKRU: 55555554
[  165.518010][  T228] Call Trace:
[  165.518179][  T228]  <TASK>
[ 165.518289][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 165.518498][ T228] ? __warn (kernel/panic.c:748) 
[ 165.518659][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 165.518872][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 165.519102][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 165.519259][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 165.519471][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 165.519696][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 165.519915][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 165.520183][ T228] ? _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) 
[ 165.520398][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 165.520609][ T228] register_netdevice (net/core/dev.c:11003) 
[ 165.520824][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 165.521041][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 165.521276][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 165.521540][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 165.521822][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 165.522105][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 165.522316][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 165.522529][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 165.522794][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 165.523003][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 165.523217][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 165.523430][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 165.523644][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 165.523808][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 165.524015][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 165.524241][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 165.524462][ T228] ksys_write (fs/read_write.c:731) 
[ 165.524622][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 165.524842][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 165.525058][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  165.525308][  T228] RIP: 0033:0x7ff84a2d4b77
[ 165.525515][ T228] 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
[  165.526219][  T228] RSP: 002b:00007ffd68905268 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  165.526522][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff84a2d4b77
[  165.526822][  T228] RDX: 0000000000000002 RSI: 0000558835b7b130 RDI: 0000000000000001
[  165.527127][  T228] RBP: 0000558835b7b130 R08: 0000000000000000 R09: 00007ff84a3474e0
[  165.527425][  T228] R10: 00007ff84a3473e0 R11: 0000000000000246 R12: 0000000000000002
[  165.527721][  T228] R13: 00007ff84a390760 R14: 0000000000000002 R15: 00007ff84a38b9c0
| [  167.140905][  T228] ------------[ cut here ]------------
| [ 167.141230][ T228] WARNING: CPU: 0 PID: 228 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) 
| [  167.141644][  T228] Modules linked in: netdevsim
| [  167.142282][  T228] Tainted: [W]=WARN
[  167.142440][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 167.142692][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 167.142942][ T228] 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
[  167.143641][  T228] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  167.143896][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  167.144199][  T228] RDX: 0000000000000000 RSI: ffff888014472c98 RDI: ffff888004f550a8
[  167.144576][  T228] RBP: ffffffff97f23440 R08: 0000000000000000 R09: fffffbfff2bbd83c
[  167.144873][  T228] R10: ffffffff95dec1e7 R11: ffff888004f545c0 R12: 0000000000000000
[  167.145595][  T228] R13: ffff888014472128 R14: ffff888014472008 R15: ffff888014472000
[  167.145889][  T228] FS:  00007ff84a193740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  167.146246][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  167.146500][  T228] CR2: 00007ff84a28c890 CR3: 000000000a57c003 CR4: 0000000000772ef0
[  167.146792][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  167.147097][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  167.147393][  T228] PKRU: 55555554
[  167.147541][  T228] Call Trace:
[  167.147693][  T228]  <TASK>
[ 167.147800][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 167.148001][ T228] ? __warn (kernel/panic.c:748) 
[ 167.148162][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 167.148364][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 167.148568][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 167.148719][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 167.148936][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 167.149162][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 167.149369][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 167.149621][ T228] ? _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) 
[ 167.149823][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 167.150025][ T228] register_netdevice (net/core/dev.c:11003) 
[ 167.150242][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 167.150456][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 167.150671][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 167.150926][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 167.151229][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 167.151486][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 167.151684][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 167.151898][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 167.152157][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 167.152353][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 167.152551][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 167.152751][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 167.152955][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 167.153127][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 167.153332][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 167.153538][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 167.153745][ T228] ksys_write (fs/read_write.c:731) 
[ 167.153897][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 167.154116][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 167.154318][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  167.154560][  T228] RIP: 0033:0x7ff84a2d4b77
[ 167.154765][ T228] 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
[  167.155457][  T228] RSP: 002b:00007ffd68905268 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  167.155753][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff84a2d4b77
[  167.156079][  T228] RDX: 0000000000000002 RSI: 0000558835b7b130 RDI: 0000000000000001
[  167.156373][  T228] RBP: 0000558835b7b130 R08: 0000000000000000 R09: 00007ff84a3474e0
[  167.156665][  T228] R10: 00007ff84a3473e0 R11: 0000000000000246 R12: 0000000000000002
[  167.156960][  T228] R13: 00007ff84a390760 R14: 0000000000000002 R15: 00007ff84a38b9c0
| [  168.794219][  T228] ------------[ cut here ]------------
| [ 168.794598][ T228] WARNING: CPU: 1 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  168.794984][  T228] Modules linked in: netdevsim
| [  168.795585][  T228] Tainted: [W]=WARN
[  168.795730][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 168.795968][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 168.796217][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  168.796879][  T228] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  168.797130][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  168.797409][  T228] RDX: 0000000000000000 RSI: ffff88801443ac98 RDI: ffff888004f550a8
[  168.797694][  T228] RBP: ffffffff97f23440 R08: 0000000000000000 R09: fffffbfff2bbd83c
[  168.798088][  T228] R10: ffffffff95dec1e7 R11: ffff888004f545c0 R12: 0000000000000000
[  168.798379][  T228] R13: ffff88801443a128 R14: ffff88801443a008 R15: ffff88801443a000
[  168.798663][  T228] FS:  00007ff84a193740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  168.799007][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  168.799308][  T228] CR2: 00007ff84a28c890 CR3: 000000000a57c001 CR4: 0000000000772ef0
[  168.799587][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  168.799875][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  168.800159][  T228] PKRU: 55555554
[  168.800302][  T228] Call Trace:
[  168.800448][  T228]  <TASK>
[ 168.800547][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 168.800738][ T228] ? __warn (kernel/panic.c:748) 
[ 168.800885][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 168.801082][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 168.801287][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 168.801436][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 168.801623][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 168.801842][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 168.802046][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 168.802301][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 168.802497][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 168.802693][ T228] register_netdevice (net/core/dev.c:11003) 
[ 168.802944][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 168.803164][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 168.803374][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 168.803619][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 168.803875][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 168.804124][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 168.804313][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 168.804508][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 168.804747][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 168.804930][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 168.805124][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 168.805319][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 168.805514][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 168.805670][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 168.805861][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 168.806069][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 168.806272][ T228] ksys_write (fs/read_write.c:731) 
[ 168.806417][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 168.806614][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 168.806806][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  168.807060][  T228] RIP: 0033:0x7ff84a2d4b77
[ 168.807254][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  168.807902][  T228] RSP: 002b:00007ffd68905268 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  168.808200][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff84a2d4b77
[  168.808474][  T228] RDX: 0000000000000002 RSI: 0000558835b7b130 RDI: 0000000000000001
[  168.808751][  T228] RBP: 0000558835b7b130 R08: 0000000000000000 R09: 00007ff84a3474e0
[  168.809038][  T228] R10: 00007ff84a3473e0 R11: 0000000000000246 R12: 0000000000000002
[  168.809327][  T228] R13: 00007ff84a390760 R14: 0000000000000002 R15: 00007ff84a38b9c0
| [  170.434515][  T228] ------------[ cut here ]------------
| [ 170.434830][ T228] WARNING: CPU: 0 PID: 228 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) 
| [  170.435269][  T228] Modules linked in: netdevsim
| [  170.435911][  T228] Tainted: [W]=WARN
[  170.436077][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 170.436340][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 170.436606][ T228] 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
[  170.437336][  T228] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  170.437603][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  170.437914][  T228] RDX: 0000000000000000 RSI: ffff8880146a2c98 RDI: ffff888004f550a8
[  170.438230][  T228] RBP: ffffffff97f23440 R08: 0000000000000000 R09: fffffbfff2bbd83c
[  170.438542][  T228] R10: ffffffff95dec1e7 R11: ffff888004f545c0 R12: 0000000000000000
[  170.438850][  T228] R13: ffff8880146a2128 R14: ffff8880146a2008 R15: ffff8880146a2000
[  170.439179][  T228] FS:  00007ff84a193740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  170.439540][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  170.439805][  T228] CR2: 0000558835a16408 CR3: 000000000a57c001 CR4: 0000000000772ef0
[  170.440223][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  170.440541][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  170.440851][  T228] PKRU: 55555554
[  170.441012][  T228] Call Trace:
[  170.441182][  T228]  <TASK>
[ 170.441292][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 170.441503][ T228] ? __warn (kernel/panic.c:748) 
[ 170.441667][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 170.441885][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 170.442113][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 170.442278][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 170.442490][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 170.442714][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 170.442933][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 170.443213][ T228] ? _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) 
[ 170.443442][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 170.443658][ T228] register_netdevice (net/core/dev.c:11003) 
[ 170.443880][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 170.444119][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 170.444354][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 170.444633][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 170.444918][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 170.445198][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 170.445432][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 170.445656][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 170.445921][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 170.446140][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 170.446351][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 170.446573][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 170.446801][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 170.446978][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 170.447197][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 170.447416][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 170.447631][ T228] ksys_write (fs/read_write.c:731) 
[ 170.447791][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 170.447998][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 170.448218][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  170.448473][  T228] RIP: 0033:0x7ff84a2d4b77
[ 170.448688][ T228] 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
[  170.449411][  T228] RSP: 002b:00007ffd68905268 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  170.449717][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff84a2d4b77
[  170.450030][  T228] RDX: 0000000000000002 RSI: 0000558835b7b130 RDI: 0000000000000001
[  170.450345][  T228] RBP: 0000558835b7b130 R08: 0000000000000000 R09: 00007ff84a3474e0
[  170.450654][  T228] R10: 00007ff84a3473e0 R11: 0000000000000246 R12: 0000000000000002
[  170.450951][  T228] R13: 00007ff84a390760 R14: 0000000000000002 R15: 00007ff84a38b9c0
| [  172.111040][  T228] ------------[ cut here ]------------
| [ 172.111440][ T228] WARNING: CPU: 0 PID: 228 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) 
| [  172.111853][  T228] Modules linked in: netdevsim
| [  172.112481][  T228] Tainted: [W]=WARN
[  172.112641][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 172.112897][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 172.113170][ T228] 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
[  172.113884][  T228] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  172.114162][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  172.114469][  T228] RDX: 0000000000000000 RSI: ffff8880145d2c98 RDI: ffff888004f550a8
[  172.114776][  T228] RBP: ffffffff97f23440 R08: 0000000000000000 R09: fffffbfff2bbd83c
[  172.115096][  T228] R10: ffffffff95dec1e7 R11: ffff888004f545c0 R12: 0000000000000000
[  172.115411][  T228] R13: ffff8880145d2128 R14: ffff8880145d2008 R15: ffff8880145d2000
[  172.115724][  T228] FS:  00007ff84a193740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  172.116088][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  172.116350][  T228] CR2: 000055aebb0cd630 CR3: 000000000a57c006 CR4: 0000000000772ef0
[  172.116656][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  172.117065][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  172.117374][  T228] PKRU: 55555554
[  172.117531][  T228] Call Trace:
[  172.117690][  T228]  <TASK>
[ 172.117800][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 172.118013][ T228] ? __warn (kernel/panic.c:748) 
[ 172.118181][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 172.118399][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 172.118616][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 172.118778][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 172.118998][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 172.119238][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 172.119458][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 172.119726][ T228] ? _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) 
[ 172.119940][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 172.120159][ T228] register_netdevice (net/core/dev.c:11003) 
[ 172.120374][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 172.120595][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 172.120821][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 172.121107][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 172.121394][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 172.121664][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 172.121889][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 172.122124][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 172.122396][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 172.122605][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 172.122818][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 172.123032][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 172.123258][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 172.123426][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 172.123638][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 172.123856][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 172.124085][ T228] ksys_write (fs/read_write.c:731) 
[ 172.124247][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 172.124463][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 172.124671][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  172.124929][  T228] RIP: 0033:0x7ff84a2d4b77
[ 172.125150][ T228] 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
[  172.125829][  T228] RSP: 002b:00007ffd68905268 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  172.126135][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff84a2d4b77
[  172.126437][  T228] RDX: 0000000000000002 RSI: 0000558835b7b130 RDI: 0000000000000001
[  172.126727][  T228] RBP: 0000558835b7b130 R08: 0000000000000000 R09: 00007ff84a3474e0
[  172.127017][  T228] R10: 00007ff84a3473e0 R11: 0000000000000246 R12: 0000000000000002
[  172.127317][  T228] R13: 00007ff84a390760 R14: 0000000000000002 R15: 00007ff84a38b9c0
| [  173.710767][  T228] ------------[ cut here ]------------
| [ 173.711163][ T228] WARNING: CPU: 1 PID: 228 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) 
| [  173.711556][  T228] Modules linked in: netdevsim
| [  173.712158][  T228] Tainted: [W]=WARN
[  173.712307][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 173.712548][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 173.712795][ T228] 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
[  173.713524][  T228] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  173.713780][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  173.714073][  T228] RDX: 0000000000000000 RSI: ffff888014442c98 RDI: ffff888004f550a8
[  173.714361][  T228] RBP: ffffffff97f23440 R08: 0000000000000000 R09: fffffbfff2bbd83c
[  173.714645][  T228] R10: ffffffff95dec1e7 R11: ffff888004f545c0 R12: 0000000000000000
[  173.715035][  T228] R13: ffff888014442128 R14: ffff888014442008 R15: ffff888014442000
[  173.715333][  T228] FS:  00007ff84a193740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  173.715667][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  173.715906][  T228] CR2: 00007ff84a28c890 CR3: 000000000a57c006 CR4: 0000000000772ef0
[  173.716205][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  173.716489][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  173.716776][  T228] PKRU: 55555554
[  173.716924][  T228] Call Trace:
[  173.717079][  T228]  <TASK>
[ 173.717179][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 173.717372][ T228] ? __warn (kernel/panic.c:748) 
[ 173.717522][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 173.717718][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 173.717918][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 173.718075][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 173.718267][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 173.718473][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 173.718674][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 173.718918][ T228] ? _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) 
[ 173.719137][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 173.719330][ T228] register_netdevice (net/core/dev.c:11003) 
[ 173.719526][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 173.719735][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 173.719945][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 173.720208][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 173.720474][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 173.720728][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 173.720923][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 173.721136][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 173.721386][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 173.721578][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 173.721770][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 173.721966][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 173.722174][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 173.722332][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4341 kernel/locking/lockdep.c:4408) 
[ 173.722574][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 173.722782][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4341 kernel/locking/lockdep.c:4408) 
[ 173.723025][ T228] ksys_write (fs/read_write.c:731) 
[ 173.723183][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 173.723391][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 173.723587][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  173.723825][  T228] RIP: 0033:0x7ff84a2d4b77
[ 173.724024][ T228] 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
[  173.724758][  T228] RSP: 002b:00007ffd68905268 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  173.725046][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff84a2d4b77
[  173.725338][  T228] RDX: 0000000000000002 RSI: 0000558835b7b130 RDI: 0000000000000001
[  173.725614][  T228] RBP: 0000558835b7b130 R08: 0000000000000000 R09: 00007ff84a3474e0
[  173.725893][  T228] R10: 00007ff84a3473e0 R11: 0000000000000246 R12: 0000000000000002


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