======================================
| 0
| xx__-> [   12.376427][  T228] ------------[ cut here ]------------
| [ 12.376833][ 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:10596) 
| [   12.377268][  T228] Modules linked in: netdevsim
[   12.378082][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 12.378407][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 12.378694][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   12.379468][  T228] RSP: 0018:ffffc90000a27910 EFLAGS: 00010246
[   12.379748][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   12.380097][  T228] RDX: 0000000000000000 RSI: ffff88800a29ac98 RDI: ffff888008d28b28
[   12.380484][  T228] RBP: ffffffffaa124440 R08: 0000000000000000 R09: fffffbfff4ffd844
[   12.380861][  T228] R10: ffffffffa7fec227 R11: ffff888008d28040 R12: 0000000000000000
[   12.381172][  T228] R13: ffff88800a29a128 R14: ffff88800a29a008 R15: ffff88800a29a000
[   12.381630][  T228] FS:  00007f5d053bc740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   12.381998][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   12.382259][  T228] CR2: 000055627959c47c CR3: 000000000a2a6005 CR4: 0000000000772ef0
[   12.382581][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   12.382886][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   12.383251][  T228] PKRU: 55555554
[   12.383449][  T228] Call Trace:
[   12.383612][  T228]  <TASK>
[ 12.383726][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 12.383928][ T228] ? __warn (kernel/panic.c:748) 
[ 12.384107][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 12.384307][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 12.384584][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 12.384793][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 12.385044][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 12.385321][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 12.385685][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 12.386035][ 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) 
[ 12.386314][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 12.386608][ T228] register_netdevice (net/core/dev.c:11033) 
[ 12.386816][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 12.387069][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 12.387357][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 12.387650][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 12.387939][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 12.388303][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 12.388590][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 12.388818][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 12.389138][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 12.389375][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 12.389642][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 12.389842][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 12.390070][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 12.390245][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 12.390577][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 12.390805][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 12.391028][ T228] ksys_write (fs/read_write.c:731) 
[ 12.391239][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 12.391556][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 12.391795][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   12.392105][  T228] RIP: 0033:0x7f5d054fdb77
[ 12.392362][ 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
[   12.393213][  T228] RSP: 002b:00007ffd84d39578 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   12.393567][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5d054fdb77
[   12.393991][  T228] RDX: 0000000000000002 RSI: 0000556279785130 RDI: 0000000000000001
[   12.394326][  T228] RBP: 0000556279785130 R08: 0000000000000000 R09: 00007f5d055704e0
[   12.394675][  T228] R10: 00007f5d055703e0 R11: 0000000000000246 R12: 0000000000000002
[   12.394986][  T228] R13: 00007f5d055b9760 R14: 0000000000000002 R15: 00007f5d055b49c0
| [  160.971931][  T228] ------------[ cut here ]------------
| [ 160.972311][ 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:10596) 
| [  160.972902][  T228] Modules linked in: netdevsim
| [  160.974252][  T228] Tainted: [W]=WARN
[  160.974499][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 160.974877][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 160.975287][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  160.976282][  T228] RSP: 0018:ffffc90000a27910 EFLAGS: 00010246
[  160.976660][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  160.977139][  T228] RDX: 0000000000000000 RSI: ffff8880051eac98 RDI: ffff888008d28b28
[  160.977604][  T228] RBP: ffffffffaa124440 R08: 0000000000000000 R09: fffffbfff4ffd844
[  160.978086][  T228] R10: ffffffffa7fec227 R11: ffff888008d28040 R12: 0000000000000000
[  160.978573][  T228] R13: ffff8880051ea128 R14: ffff8880051ea008 R15: ffff8880051ea000
[  160.979049][  T228] FS:  00007f5d053bc740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  160.979616][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  160.980031][  T228] CR2: 00005562795c14f8 CR3: 000000000a2a6005 CR4: 0000000000772ef0
[  160.980520][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  160.980990][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  160.981488][  T228] PKRU: 55555554
[  160.981727][  T228] Call Trace:
[  160.981956][  T228]  <TASK>
[ 160.982132][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 160.982437][ T228] ? __warn (kernel/panic.c:748) 
[ 160.982683][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 160.982995][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 160.983341][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 160.983579][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 160.984160][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 160.984505][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 160.984831][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 160.985268][ 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) 
[ 160.985592][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 160.985904][ T228] register_netdevice (net/core/dev.c:11033) 
[ 160.986249][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 160.986586][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 160.986923][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 160.987379][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 160.987765][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 160.988015][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 160.988229][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 160.988448][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 160.988701][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 160.988890][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 160.989095][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 160.989302][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 160.989520][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 160.989704][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 160.989929][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 160.990161][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 160.990370][ T228] ksys_write (fs/read_write.c:731) 
[ 160.990523][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 160.990744][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 160.990942][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  160.991194][  T228] RIP: 0033:0x7f5d054fdb77
[ 160.991400][ 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
[  160.992079][  T228] RSP: 002b:00007ffd84d38208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  160.992366][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5d054fdb77
[  160.992649][  T228] RDX: 0000000000000002 RSI: 0000556279785130 RDI: 0000000000000001
[  160.992944][  T228] RBP: 0000556279785130 R08: 0000000000000000 R09: 00007f5d055704e0
[  160.993243][  T228] R10: 00007f5d055703e0 R11: 0000000000000246 R12: 0000000000000002
[  160.993570][  T228] R13: 00007f5d055b9760 R14: 0000000000000002 R15: 00007f5d055b49c0
| [  162.720811][  T228] ------------[ cut here ]------------
| [ 162.721094][ 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:10596) 
| [  162.721495][  T228] Modules linked in: netdevsim
| [  162.722175][  T228] Tainted: [W]=WARN
[  162.722325][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 162.722564][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 162.722855][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  162.723575][  T228] RSP: 0018:ffffc90000a27910 EFLAGS: 00010246
[  162.723858][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  162.724160][  T228] RDX: 0000000000000000 RSI: ffff88800e612c98 RDI: ffff888008d28b28
[  162.724544][  T228] RBP: ffffffffaa124440 R08: 0000000000000000 R09: fffffbfff4ffd844
[  162.724909][  T228] R10: ffffffffa7fec227 R11: ffff888008d28040 R12: 0000000000000000
[  162.725266][  T228] R13: ffff88800e612128 R14: ffff88800e612008 R15: ffff88800e612000
[  162.725598][  T228] FS:  00007f5d053bc740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  162.725963][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  162.726262][  T228] CR2: 00007f17d97a1220 CR3: 000000000a2a6002 CR4: 0000000000772ef0
[  162.726562][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  162.726934][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  162.727236][  T228] PKRU: 55555554
[  162.727383][  T228] Call Trace:
[  162.727552][  T228]  <TASK>
[ 162.727653][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 162.727855][ T228] ? __warn (kernel/panic.c:748) 
[ 162.728013][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 162.728236][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 162.728449][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 162.728598][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 162.728874][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 162.729094][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 162.729322][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 162.729589][ 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) 
[ 162.729804][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 162.730004][ T228] register_netdevice (net/core/dev.c:11033) 
[ 162.730219][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 162.730478][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 162.730693][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 162.730972][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 162.731298][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 162.731557][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 162.731822][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 162.732071][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 162.732344][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 162.732602][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 162.732798][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 162.732995][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 162.733207][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 162.733423][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 162.733672][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 162.733908][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 162.734205][ T228] ksys_write (fs/read_write.c:731) 
[ 162.734378][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 162.734620][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 162.734856][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  162.735138][  T228] RIP: 0033:0x7f5d054fdb77
[ 162.735551][ 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
[  162.736278][  T228] RSP: 002b:00007ffd84d38208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  162.736603][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5d054fdb77
[  162.736922][  T228] RDX: 0000000000000002 RSI: 0000556279785130 RDI: 0000000000000001
[  162.737214][  T228] RBP: 0000556279785130 R08: 0000000000000000 R09: 00007f5d055704e0
[  162.737516][  T228] R10: 00007f5d055703e0 R11: 0000000000000246 R12: 0000000000000002
[  162.737821][  T228] R13: 00007f5d055b9760 R14: 0000000000000002 R15: 00007f5d055b49c0
| [  164.376512][  T228] ------------[ cut here ]------------
| [ 164.376882][ 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:10596) 
| [  164.378396][  T228] Modules linked in: netdevsim
| [  164.379413][  T228] Tainted: [W]=WARN
[  164.379646][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 164.380047][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 164.380474][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  164.381588][  T228] RSP: 0018:ffffc90000a27910 EFLAGS: 00010246
[  164.381968][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  164.382494][  T228] RDX: 0000000000000000 RSI: ffff888008f4ac98 RDI: ffff888008d28b28
[  164.382955][  T228] RBP: ffffffffaa124440 R08: 0000000000000000 R09: fffffbfff4ffd844
[  164.383452][  T228] R10: ffffffffa7fec227 R11: ffff888008d28040 R12: 0000000000000000
[  164.383909][  T228] R13: ffff888008f4a128 R14: ffff888008f4a008 R15: ffff888008f4a000
[  164.384366][  T228] FS:  00007f5d053bc740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  164.384915][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  164.385307][  T228] CR2: 000055627959c47c CR3: 000000000a2a6001 CR4: 0000000000772ef0
[  164.385695][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  164.386050][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  164.386498][  T228] PKRU: 55555554
[  164.386729][  T228] Call Trace:
[  164.386964][  T228]  <TASK>
[ 164.387141][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 164.387449][ T228] ? __warn (kernel/panic.c:748) 
[ 164.387694][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 164.388006][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 164.388365][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 164.388650][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 164.388975][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 164.389336][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 164.389670][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 164.390075][ 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) 
[ 164.390397][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 164.390754][ T228] register_netdevice (net/core/dev.c:11033) 
[ 164.391084][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 164.391407][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 164.391750][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 164.392182][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 164.392624][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 164.393052][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 164.393416][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 164.393740][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 164.394148][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 164.394447][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 164.394772][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 164.395107][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 164.395437][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 164.395677][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 164.395987][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 164.396323][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 164.396642][ T228] ksys_write (fs/read_write.c:731) 
[ 164.396874][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 164.397215][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 164.397521][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  164.397895][  T228] RIP: 0033:0x7f5d054fdb77
[ 164.398220][ 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
[  164.399122][  T228] RSP: 002b:00007ffd84d38208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  164.399455][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5d054fdb77
[  164.399892][  T228] RDX: 0000000000000002 RSI: 0000556279785130 RDI: 0000000000000001
[  164.400347][  T228] RBP: 0000556279785130 R08: 0000000000000000 R09: 00007f5d055704e0
[  164.400784][  T228] R10: 00007f5d055703e0 R11: 0000000000000246 R12: 0000000000000002
[  164.401262][  T228] R13: 00007f5d055b9760 R14: 0000000000000002 R15: 00007f5d055b49c0
| [  166.175342][  T228] ------------[ cut here ]------------
| [ 166.175630][ 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:10596) 
| [  166.176083][  T228] Modules linked in: netdevsim
| [  166.176763][  T228] Tainted: [W]=WARN
[  166.176922][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 166.177194][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 166.177474][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  166.178285][  T228] RSP: 0018:ffffc90000a27910 EFLAGS: 00010246
[  166.178561][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  166.178873][  T228] RDX: 0000000000000000 RSI: ffff88800bbc2c98 RDI: ffff888008d28b28
[  166.179276][  T228] RBP: ffffffffaa124440 R08: 0000000000000000 R09: fffffbfff4ffd844
[  166.179736][  T228] R10: ffffffffa7fec227 R11: ffff888008d28040 R12: 0000000000000000
[  166.180152][  T228] R13: ffff88800bbc2128 R14: ffff88800bbc2008 R15: ffff88800bbc2000
[  166.180498][  T228] FS:  00007f5d053bc740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  166.180858][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  166.181129][  T228] CR2: 00005562795ce018 CR3: 000000000a2a6003 CR4: 0000000000772ef0
[  166.181462][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  166.181759][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  166.182048][  T228] PKRU: 55555554
[  166.182201][  T228] Call Trace:
[  166.182348][  T228]  <TASK>
[ 166.182447][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 166.182648][ T228] ? __warn (kernel/panic.c:748) 
[ 166.182806][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 166.183016][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 166.183253][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 166.183420][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 166.183633][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 166.183853][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 166.184093][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 166.184361][ 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) 
[ 166.184595][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 166.184808][ T228] register_netdevice (net/core/dev.c:11033) 
[ 166.185027][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 166.185257][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 166.185505][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 166.185774][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 166.186066][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 166.186336][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 166.186552][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 166.186760][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 166.187014][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 166.187224][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 166.187429][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 166.187626][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 166.187824][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 166.188015][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 166.188237][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 166.188445][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 166.188650][ T228] ksys_write (fs/read_write.c:731) 
[ 166.188801][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 166.189006][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 166.189213][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  166.189459][  T228] RIP: 0033:0x7f5d054fdb77
[ 166.189668][ 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
[  166.190358][  T228] RSP: 002b:00007ffd84d38208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  166.190652][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5d054fdb77
[  166.190957][  T228] RDX: 0000000000000002 RSI: 0000556279785130 RDI: 0000000000000001
[  166.191257][  T228] RBP: 0000556279785130 R08: 0000000000000000 R09: 00007f5d055704e0
[  166.191546][  T228] R10: 00007f5d055703e0 R11: 0000000000000246 R12: 0000000000000002
[  166.191823][  T228] R13: 00007f5d055b9760 R14: 0000000000000002 R15: 00007f5d055b49c0
| [  167.768461][  T228] ------------[ cut here ]------------
| [ 167.768755][ 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:10596) 
| [  167.770627][  T228] Modules linked in: netdevsim
| [  167.771782][  T228] Tainted: [W]=WARN
[  167.771971][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 167.772294][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 167.772608][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  167.773398][  T228] RSP: 0018:ffffc90000a27910 EFLAGS: 00010246
[  167.773705][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  167.774082][  T228] RDX: 0000000000000000 RSI: ffff88800e622c98 RDI: ffff888008d28b28
[  167.774469][  T228] RBP: ffffffffaa124440 R08: 0000000000000000 R09: fffffbfff4ffd844
[  167.774802][  T228] R10: ffffffffa7fec227 R11: ffff888008d28040 R12: 0000000000000000
[  167.775180][  T228] R13: ffff88800e622128 R14: ffff88800e622008 R15: ffff88800e622000
[  167.775578][  T228] FS:  00007f5d053bc740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  167.775977][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  167.776292][  T228] CR2: 00005562795c15e8 CR3: 000000000a2a6002 CR4: 0000000000772ef0
[  167.776644][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  167.777035][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  167.777456][  T228] PKRU: 55555554
[  167.777667][  T228] Call Trace:
[  167.777880][  T228]  <TASK>
[ 167.778025][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 167.778295][ T228] ? __warn (kernel/panic.c:748) 
[ 167.778497][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 167.778757][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 167.778982][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 167.779191][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 167.779424][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 167.779667][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 167.779907][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 167.780209][ 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) 
[ 167.780447][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 167.780699][ T228] register_netdevice (net/core/dev.c:11033) 
[ 167.780972][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 167.781242][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 167.781540][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 167.781878][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 167.782238][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 167.782547][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 167.782782][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 167.783013][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 167.783366][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 167.783570][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 167.783781][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 167.784019][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 167.784298][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 167.784493][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 167.784746][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 167.784988][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 167.785258][ T228] ksys_write (fs/read_write.c:731) 
[ 167.785464][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 167.785719][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 167.785980][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  167.786306][  T228] RIP: 0033:0x7f5d054fdb77
[ 167.786574][ 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
[  167.787420][  T228] RSP: 002b:00007ffd84d38208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  167.787753][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5d054fdb77
[  167.788099][  T228] RDX: 0000000000000002 RSI: 0000556279785130 RDI: 0000000000000001
[  167.788475][  T228] RBP: 0000556279785130 R08: 0000000000000000 R09: 00007f5d055704e0
[  167.788803][  T228] R10: 00007f5d055703e0 R11: 0000000000000246 R12: 0000000000000002
[  167.789192][  T228] R13: 00007f5d055b9760 R14: 0000000000000002 R15: 00007f5d055b49c0
| [  169.504163][  T228] ------------[ cut here ]------------
| [ 169.504443][ 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:10596) 
| [  169.504942][  T228] Modules linked in: netdevsim
| [  169.505806][  T228] Tainted: [W]=WARN
[  169.506011][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 169.506421][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 169.506702][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  169.507562][  T228] RSP: 0018:ffffc90000a27910 EFLAGS: 00010246
[  169.507836][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  169.508265][  T228] RDX: 0000000000000000 RSI: ffff88800a29ac98 RDI: ffff888008d28b28
[  169.508609][  T228] RBP: ffffffffaa124440 R08: 0000000000000000 R09: fffffbfff4ffd844
[  169.508937][  T228] R10: ffffffffa7fec227 R11: ffff888008d28040 R12: 0000000000000000
[  169.509334][  T228] R13: ffff88800a29a128 R14: ffff88800a29a008 R15: ffff88800a29a000
[  169.509643][  T228] FS:  00007f5d053bc740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  169.510027][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  169.510414][  T228] CR2: 00005562795ce018 CR3: 000000000a2a6002 CR4: 0000000000772ef0
[  169.510730][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  169.511039][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  169.511479][  T228] PKRU: 55555554
[  169.511657][  T228] Call Trace:
[  169.511823][  T228]  <TASK>
[ 169.511929][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 169.512244][ T228] ? __warn (kernel/panic.c:748) 
[ 169.512412][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 169.512618][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 169.512844][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 169.513009][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 169.513375][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 169.513616][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 169.513843][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 169.514269][ 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) 
[ 169.514487][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 169.514698][ T228] register_netdevice (net/core/dev.c:11033) 
[ 169.514911][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 169.515174][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 169.515412][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 169.515681][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 169.515967][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 169.516265][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 169.516476][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 169.516696][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 169.516965][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 169.517186][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 169.517412][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 169.517651][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 169.517884][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 169.518079][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 169.518311][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 169.518558][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 169.518784][ T228] ksys_write (fs/read_write.c:731) 
[ 169.518952][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 169.519215][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 169.519441][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  169.519709][  T228] RIP: 0033:0x7f5d054fdb77
[ 169.519951][ 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
[  169.520705][  T228] RSP: 002b:00007ffd84d38208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  169.521037][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5d054fdb77
[  169.521380][  T228] RDX: 0000000000000002 RSI: 0000556279785130 RDI: 0000000000000001
[  169.521712][  T228] RBP: 0000556279785130 R08: 0000000000000000 R09: 00007f5d055704e0
[  169.522035][  T228] R10: 00007f5d055703e0 R11: 0000000000000246 R12: 0000000000000002
[  169.522374][  T228] R13: 00007f5d055b9760 R14: 0000000000000002 R15: 00007f5d055b49c0
| [  171.141653][  T228] ------------[ cut here ]------------
| [ 171.141922][ 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:10596) 
| [  171.142403][  T228] Modules linked in: netdevsim
| [  171.143041][  T228] Tainted: [W]=WARN
[  171.143200][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 171.143482][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 171.143738][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  171.144414][  T228] RSP: 0018:ffffc90000a27910 EFLAGS: 00010246
[  171.144673][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  171.145042][  T228] RDX: 0000000000000000 RSI: ffff8880051eac98 RDI: ffff888008d28b28
[  171.145450][  T228] RBP: ffffffffaa124440 R08: 0000000000000000 R09: fffffbfff4ffd844
[  171.145746][  T228] R10: ffffffffa7fec227 R11: ffff888008d28040 R12: 0000000000000000
[  171.146045][  T228] R13: ffff8880051ea128 R14: ffff8880051ea008 R15: ffff8880051ea000
[  171.146369][  T228] FS:  00007f5d053bc740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  171.146723][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  171.146970][  T228] CR2: 000055627959c47c CR3: 000000000a2a6001 CR4: 0000000000772ef0
[  171.147271][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  171.147584][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  171.147886][  T228] PKRU: 55555554
[  171.148032][  T228] Call Trace:
[  171.148187][  T228]  <TASK>
[ 171.148289][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 171.148499][ T228] ? __warn (kernel/panic.c:748) 
[ 171.148659][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 171.148862][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 171.149071][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 171.149226][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 171.149419][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 171.149635][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 171.149846][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 171.150101][ 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) 
[ 171.150305][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 171.150507][ T228] register_netdevice (net/core/dev.c:11033) 
[ 171.150710][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 171.150923][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 171.151147][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 171.151406][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 171.151690][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 171.151969][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 171.152266][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 171.152488][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 171.152742][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 171.152936][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 171.153338][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 171.153653][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 171.153887][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 171.154153][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 171.154363][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 171.154590][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 171.154801][ T228] ksys_write (fs/read_write.c:731) 
[ 171.154962][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 171.155301][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 171.155604][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  171.155980][  T228] RIP: 0033:0x7f5d054fdb77
[ 171.156490][ 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
[  171.157768][  T228] RSP: 002b:00007ffd84d38208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  171.158393][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5d054fdb77
[  171.158871][  T228] RDX: 0000000000000002 RSI: 0000556279785130 RDI: 0000000000000001
[  171.159487][  T228] RBP: 0000556279785130 R08: 0000000000000000 R09: 00007f5d055704e0
[  171.159984][  T228] R10: 00007f5d055703e0 R11: 0000000000000246 R12: 0000000000000002
[  171.160535][  T228] R13: 00007f5d055b9760 R14: 0000000000000002 R15: 00007f5d055b49c0
| [  172.747561][  T228] ------------[ cut here ]------------
| [ 172.747997][ 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:10596) 
| [  172.748870][  T228] Modules linked in: netdevsim
| [  172.749896][  T228] Tainted: [W]=WARN
[  172.750168][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 172.750564][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 172.750997][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  172.752125][  T228] RSP: 0018:ffffc90000a27910 EFLAGS: 00010246
[  172.752549][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  172.753008][  T228] RDX: 0000000000000000 RSI: ffff88800e612c98 RDI: ffff888008d28b28
[  172.753556][  T228] RBP: ffffffffaa124440 R08: 0000000000000000 R09: fffffbfff4ffd844
[  172.754022][  T228] R10: ffffffffa7fec227 R11: ffff888008d28040 R12: 0000000000000000
[  172.754500][  T228] R13: ffff88800e612128 R14: ffff88800e612008 R15: ffff88800e612000
[  172.754958][  T228] FS:  00007f5d053bc740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  172.755525][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  172.755945][  T228] CR2: 000055627975bde8 CR3: 000000000a2a6001 CR4: 0000000000772ef0
[  172.756439][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  172.756942][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  172.757418][  T228] PKRU: 55555554
[  172.757660][  T228] Call Trace:
[  172.757897][  T228]  <TASK>
[ 172.758091][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 172.758409][ T228] ? __warn (kernel/panic.c:748) 
[ 172.758655][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 172.758999][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 172.759350][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 172.759590][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 172.759943][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 172.760319][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 172.760641][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 172.761043][ 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) 
[ 172.761389][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 172.761709][ T228] register_netdevice (net/core/dev.c:11033) 
[ 172.762028][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 172.762372][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 172.762695][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 172.763115][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 172.763567][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 172.763972][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 172.764301][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 172.764633][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 172.765038][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 172.765384][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 172.765703][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 172.766018][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 172.766338][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 172.766585][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 172.766897][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 172.767239][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 172.767552][ T228] ksys_write (fs/read_write.c:731) 
[ 172.767787][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 172.768147][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 172.768466][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  172.768835][  T228] RIP: 0033:0x7f5d054fdb77
[ 172.769178][ 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
[  172.770256][  T228] RSP: 002b:00007ffd84d38208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  172.770742][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5d054fdb77
[  172.771257][  T228] RDX: 0000000000000002 RSI: 0000556279785130 RDI: 0000000000000001
[  172.771713][  T228] RBP: 0000556279785130 R08: 0000000000000000 R09: 00007f5d055704e0
[  172.772211][  T228] R10: 00007f5d055703e0 R11: 0000000000000246 R12: 0000000000000002
[  172.772695][  T228] R13: 00007f5d055b9760 R14: 0000000000000002 R15: 00007f5d055b49c0
| [  174.344767][  T228] ------------[ cut here ]------------
| [ 174.345248][ 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:10596) 
| [  174.345895][  T228] Modules linked in: netdevsim
| [  174.346909][  T228] Tainted: [W]=WARN
[  174.347195][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 174.347636][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 174.348118][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  174.349258][  T228] RSP: 0018:ffffc90000a27910 EFLAGS: 00010246
[  174.349678][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  174.350202][  T228] RDX: 0000000000000000 RSI: ffff888008f4ac98 RDI: ffff888008d28b28
[  174.350671][  T228] RBP: ffffffffaa124440 R08: 0000000000000000 R09: fffffbfff4ffd844
[  174.351182][  T228] R10: ffffffffa7fec227 R11: ffff888008d28040 R12: 0000000000000000
[  174.351704][  T228] R13: ffff888008f4a128 R14: ffff888008f4a008 R15: ffff888008f4a000
[  174.352218][  T228] FS:  00007f5d053bc740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  174.352784][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  174.353257][  T228] CR2: 000055627959c47c CR3: 000000000a2a6004 CR4: 0000000000772ef0
[  174.353748][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  174.354260][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  174.354741][  T228] PKRU: 55555554
[  174.355005][  T228] Call Trace:
[  174.355307][  T228]  <TASK>
[ 174.355496][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 174.355845][ T228] ? __warn (kernel/panic.c:748) 
[ 174.356132][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 174.356468][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 174.356845][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 174.357140][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 174.357482][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 174.357846][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 174.358236][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 174.358657][ 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) 
[ 174.359002][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 174.359374][ T228] register_netdevice (net/core/dev.c:11033) 
[ 174.359730][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 174.360130][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 174.360507][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 174.360947][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 174.361438][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 174.361881][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 174.362256][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 174.362632][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 174.363090][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 174.363456][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 174.363803][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 174.364171][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 174.364524][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 174.364798][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 174.365168][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 174.365555][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 174.365923][ T228] ksys_write (fs/read_write.c:731) 
[ 174.366218][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 174.366588][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 174.366936][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  174.367378][  T228] RIP: 0033:0x7f5d054fdb77
[ 174.367731][ 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
[  174.368876][  T228] RSP: 002b:00007ffd84d38208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  174.369425][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5d054fdb77
[  174.369919][  T228] RDX: 0000000000000002 RSI: 0000556279785130 RDI: 0000000000000001
[  174.370434][  T228] RBP: 0000556279785130 R08: 0000000000000000 R09: 00007f5d055704e0
[  174.370932][  T228] R10: 00007f5d055703e0 R11: 0000000000000246 R12: 0000000000000002
[  174.371431][  T228] R13: 00007f5d055b9760 R14: 0000000000000002 R15: 00007f5d055b49c0
| [  175.901085][  T228] ------------[ cut here ]------------
| [ 175.901459][ 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:10596) 
| [  175.901898][  T228] Modules linked in: netdevsim
| [  175.902561][  T228] Tainted: [W]=WARN
[  175.902720][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 175.903005][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 175.903291][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  175.904003][  T228] RSP: 0018:ffffc90000a27910 EFLAGS: 00010246
[  175.904266][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  175.904566][  T228] RDX: 0000000000000000 RSI: ffff88800bbc2c98 RDI: ffff888008d28b28
[  175.904929][  T228] RBP: ffffffffaa124440 R08: 0000000000000000 R09: fffffbfff4ffd844
[  175.905277][  T228] R10: ffffffffa7fec227 R11: ffff888008d28040 R12: 0000000000000000
[  175.905585][  T228] R13: ffff88800bbc2128 R14: ffff88800bbc2008 R15: ffff88800bbc2000
[  175.905935][  T228] FS:  00007f5d053bc740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  175.906480][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  175.906743][  T228] CR2: 000055627959c47c CR3: 000000000a2a6006 CR4: 0000000000772ef0
[  175.907147][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  175.907481][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  175.907780][  T228] PKRU: 55555554
[  175.907977][  T228] Call Trace:
[  175.908218][  T228]  <TASK>
[ 175.908321][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 175.908534][ T228] ? __warn (kernel/panic.c:748) 
[ 175.908688][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 175.908885][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 175.909231][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 175.909458][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 175.909708][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 175.909931][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 175.910232][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 175.910558][ 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) 
[ 175.910809][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 175.911172][ T228] register_netdevice (net/core/dev.c:11033) 
[ 175.911443][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 175.911727][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 175.911942][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 175.912285][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 175.912578][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 175.912830][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 175.913149][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 175.913385][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 175.913660][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 175.913984][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 175.914341][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 175.914668][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 175.915005][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 175.915280][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 175.915615][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 175.915952][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 175.916301][ T228] ksys_write (fs/read_write.c:731) 
[ 175.916555][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 175.916851][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 175.917066][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  175.917307][  T228] RIP: 0033:0x7f5d054fdb77
[ 175.917511][ 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
[  175.918225][  T228] RSP: 002b:00007ffd84d38208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  175.918582][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5d054fdb77
[  175.918907][  T228] RDX: 0000000000000002 RSI: 0000556279785130 RDI: 0000000000000001
[  175.919214][  T228] RBP: 0000556279785130 R08: 0000000000000000 R09: 00007f5d055704e0
[  175.919503][  T228] R10: 00007f5d055703e0 R11: 0000000000000246 R12: 0000000000000002
[  175.919808][  T228] R13: 00007f5d055b9760 R14: 0000000000000002 R15: 00007f5d055b49c0
| [  180.666085][  T228] ------------[ cut here ]------------
| [ 180.666484][ 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:10596) 
| [  180.667076][  T228] Modules linked in: netdevsim
| [  180.667726][  T228] Tainted: [W]=WARN
[  180.667887][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 180.668153][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 180.668420][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  180.669109][  T228] RSP: 0018:ffffc90000a27910 EFLAGS: 00010246
[  180.669370][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  180.669666][  T228] RDX: 0000000000000000 RSI: ffff88800a29ac98 RDI: ffff888008d28b28
[  180.669966][  T228] RBP: ffffffffaa124440 R08: 0000000000000000 R09: fffffbfff4ffd844
[  180.670285][  T228] R10: ffffffffa7fec227 R11: ffff888008d28040 R12: 0000000000000000
[  180.670577][  T228] R13: ffff88800a29a128 R14: ffff88800a29a008 R15: ffff88800a29a000
[  180.670871][  T228] FS:  00007f5d053bc740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  180.671228][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  180.671472][  T228] CR2: 00007f5d054b5890 CR3: 000000000a2a6001 CR4: 0000000000772ef0
[  180.671769][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  180.672064][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  180.672357][  T228] PKRU: 55555554
[  180.672507][  T228] Call Trace:
[  180.672655][  T228]  <TASK>
[ 180.672760][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 180.672968][ T228] ? __warn (kernel/panic.c:748) 
[ 180.673135][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 180.673354][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 180.673561][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 180.673710][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 180.673906][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 180.674122][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 180.674328][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 180.674582][ 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) 
[ 180.674781][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 180.674981][ T228] register_netdevice (net/core/dev.c:11033) 
[ 180.675193][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 180.675396][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 180.675615][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 180.675870][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 180.676164][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 180.676424][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 180.676630][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 180.676850][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 180.677116][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 180.677312][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 180.677511][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 180.677708][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 180.677912][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 180.678086][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 180.678296][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 180.678510][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 180.678714][ T228] ksys_write (fs/read_write.c:731) 
[ 180.678861][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 180.679140][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 180.679347][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  180.679585][  T228] RIP: 0033:0x7f5d054fdb77
[ 180.679789][ 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
[  180.680480][  T228] RSP: 002b:00007ffd84d37968 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  180.680791][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5d054fdb77
[  180.681115][  T228] RDX: 0000000000000002 RSI: 0000556279785130 RDI: 0000000000000001
[  180.681416][  T228] RBP: 0000556279785130 R08: 0000000000000000 R09: 00007f5d055704e0
[  180.681711][  T228] R10: 00007f5d055703e0 R11: 0000000000000246 R12: 0000000000000002
[  180.681998][  T228] R13: 00007f5d055b9760 R14: 0000000000000002 R15: 00007f5d055b49c0
| [  182.345918][  T228] ------------[ cut here ]------------
| [ 182.346344][ 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:10596) 
| [  182.346738][  T228] Modules linked in: netdevsim
| [  182.347345][  T228] Tainted: [W]=WARN
[  182.347501][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 182.347806][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 182.348075][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  182.348781][  T228] RSP: 0018:ffffc90000a27910 EFLAGS: 00010246
[  182.349026][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  182.349322][  T228] RDX: 0000000000000000 RSI: ffff88800e622c98 RDI: ffff888008d28b28
[  182.349611][  T228] RBP: ffffffffaa124440 R08: 0000000000000000 R09: fffffbfff4ffd844
[  182.349899][  T228] R10: ffffffffa7fec227 R11: ffff888008d28040 R12: 0000000000000000
[  182.350195][  T228] R13: ffff88800e622128 R14: ffff88800e622008 R15: ffff88800e622000
[  182.350495][  T228] FS:  00007f5d053bc740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  182.350847][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  182.351118][  T228] CR2: 000055627974ab2c CR3: 000000000a2a6004 CR4: 0000000000772ef0
[  182.351412][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  182.351695][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  182.351981][  T228] PKRU: 55555554
[  182.352140][  T228] Call Trace:
[  182.352295][  T228]  <TASK>
[ 182.352402][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 182.352889][ T228] ? __warn (kernel/panic.c:748) 
[ 182.353040][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 182.353274][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 182.353487][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 182.353639][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 182.353831][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 182.354041][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 182.354254][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 182.354504][ 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) 
[ 182.354707][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 182.354904][ T228] register_netdevice (net/core/dev.c:11033) 
[ 182.355116][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 182.355323][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 182.355547][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 182.355801][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 182.356075][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 182.356329][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 182.356532][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 182.356736][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 182.356992][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 182.357194][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 182.357398][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 182.357598][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 182.357798][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 182.357956][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 182.358167][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 182.358378][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 182.358581][ T228] ksys_write (fs/read_write.c:731) 
[ 182.358729][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 182.358930][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 182.359131][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  182.359373][  T228] RIP: 0033:0x7f5d054fdb77
[ 182.359579][ 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
[  182.360269][  T228] RSP: 002b:00007ffd84d37968 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  182.360564][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5d054fdb77
[  182.360849][  T228] RDX: 0000000000000002 RSI: 0000556279785130 RDI: 0000000000000001
[  182.361152][  T228] RBP: 0000556279785130 R08: 0000000000000000 R09: 00007f5d055704e0
[  182.361439][  T228] R10: 00007f5d055703e0 R11: 0000000000000246 R12: 0000000000000002
[  182.361731][  T228] R13: 00007f5d055b9760 R14: 0000000000000002 R15: 00007f5d055b49c0
| [  184.039491][  T228] ------------[ cut here ]------------
| [ 184.039822][ 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:10596) 
| [  184.040271][  T228] Modules linked in: netdevsim
| [  184.040855][  T228] Tainted: [W]=WARN
[  184.041026][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 184.041290][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 184.041538][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  184.042223][  T228] RSP: 0018:ffffc90000a27910 EFLAGS: 00010246
[  184.042502][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  184.042804][  T228] RDX: 0000000000000000 RSI: ffff8880051eac98 RDI: ffff888008d28b28
[  184.043103][  T228] RBP: ffffffffaa124440 R08: 0000000000000000 R09: fffffbfff4ffd844
[  184.043609][  T228] R10: ffffffffa7fec227 R11: ffff888008d28040 R12: 0000000000000000
[  184.043926][  T228] R13: ffff8880051ea128 R14: ffff8880051ea008 R15: ffff8880051ea000
[  184.044229][  T228] FS:  00007f5d053bc740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  184.044564][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  184.044811][  T228] CR2: 00007ff52c21a000 CR3: 000000000a2a6006 CR4: 0000000000772ef0
[  184.045119][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  184.045448][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  184.045742][  T228] PKRU: 55555554
[  184.045906][  T228] Call Trace:
[  184.046084][  T228]  <TASK>
[ 184.046190][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 184.046401][ T228] ? __warn (kernel/panic.c:748) 
[ 184.046554][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 184.046765][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 184.046989][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 184.047220][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 184.047433][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 184.047644][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 184.047857][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 184.048139][ 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) 
[ 184.048341][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 184.048561][ T228] register_netdevice (net/core/dev.c:11033) 
[ 184.048767][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 184.048997][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 184.049220][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 184.049506][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 184.049770][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 184.050046][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 184.050272][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 184.050508][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 184.050777][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 184.050968][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 184.051178][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 184.051393][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 184.051592][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 184.051756][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 184.051955][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 184.052171][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 184.052376][ T228] ksys_write (fs/read_write.c:731) 
[ 184.052526][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 184.052725][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 184.052926][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  184.053198][  T228] RIP: 0033:0x7f5d054fdb77
[ 184.053403][ 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
[  184.054106][  T228] RSP: 002b:00007ffd84d37968 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  184.054407][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5d054fdb77
[  184.054720][  T228] RDX: 0000000000000002 RSI: 0000556279785130 RDI: 0000000000000001
[  184.055009][  T228] RBP: 0000556279785130 R08: 0000000000000000 R09: 00007f5d055704e0
[  184.055321][  T228] R10: 00007f5d055703e0 R11: 0000000000000246 R12: 0000000000000002
[  184.055617][  T228] R13: 00007f5d055b9760 R14: 0000000000000002 R15: 00007f5d055b49c0
| [  185.852101][  T228] ------------[ cut here ]------------
| [ 185.852759][ 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:10596) 
| [  185.853521][  T228] Modules linked in: netdevsim
| [  185.854583][  T228] Tainted: [W]=WARN
[  185.854843][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 185.855283][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 185.855743][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  185.856901][  T228] RSP: 0018:ffffc90000a27910 EFLAGS: 00010246
[  185.857353][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  185.857850][  T228] RDX: 0000000000000000 RSI: ffff888008f4ac98 RDI: ffff888008d28b28
[  185.858375][  T228] RBP: ffffffffaa124440 R08: 0000000000000000 R09: fffffbfff4ffd844
[  185.858873][  T228] R10: ffffffffa7fec227 R11: ffff888008d28040 R12: 0000000000000000
[  185.859401][  T228] R13: ffff888008f4a128 R14: ffff888008f4a008 R15: ffff888008f4a000
[  185.859985][  T228] FS:  00007f5d053bc740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  185.860623][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  185.861040][  T228] CR2: 00007f17d9955a00 CR3: 000000000a2a6005 CR4: 0000000000772ef0
[  185.861615][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  185.862148][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  185.862658][  T228] PKRU: 55555554
[  185.863440][  T228] Call Trace:
[  185.863703][  T228]  <TASK>
[ 185.863875][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 185.864243][ T228] ? __warn (kernel/panic.c:748) 
[ 185.864513][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 185.864846][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 185.865316][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 185.865605][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 185.865968][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 185.866372][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 185.866743][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 185.867197][ 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) 
[ 185.867561][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 185.867925][ T228] register_netdevice (net/core/dev.c:11033) 
[ 185.868310][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 185.868686][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 185.869116][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 185.869562][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 185.870050][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 185.870526][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 185.870863][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 185.871236][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 185.871647][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 185.871982][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 185.872347][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 185.872678][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 185.873011][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 185.873322][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 185.873651][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 185.873991][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 185.874377][ T228] ksys_write (fs/read_write.c:731) 
[ 185.874649][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 185.874997][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 185.875366][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  185.875761][  T228] RIP: 0033:0x7f5d054fdb77
[ 185.876121][ 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
[  185.877238][  T228] RSP: 002b:00007ffd84d37968 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  185.877752][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5d054fdb77
[  185.878580][  T228] RDX: 0000000000000002 RSI: 0000556279785130 RDI: 0000000000000001
[  185.879111][  T228] RBP: 0000556279785130 R08: 0000000000000000 R09: 00007f5d055704e0
[  185.879602][  T228] R10: 00007f5d055703e0 R11: 0000000000000246 R12: 0000000000000002
[  185.880103][  T228] R13: 00007f5d055b9760 R14: 0000000000000002 R15: 00007f5d055b49c0
| [  187.581193][  T228] ------------[ cut here ]------------
| [ 187.581628][ 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:10596) 
| [  187.582144][  T228] Modules linked in: netdevsim
| [  187.582791][  T228] Tainted: [W]=WARN
[  187.582957][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 187.583270][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 187.583556][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  187.584314][  T228] RSP: 0018:ffffc90000a27910 EFLAGS: 00010246
[  187.584620][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  187.584945][  T228] RDX: 0000000000000000 RSI: ffff88800e612c98 RDI: ffff888008d28b28
[  187.585293][  T228] RBP: ffffffffaa124440 R08: 0000000000000000 R09: fffffbfff4ffd844
[  187.585662][  T228] R10: ffffffffa7fec227 R11: ffff888008d28040 R12: 0000000000000000
[  187.586001][  T228] R13: ffff88800e612128 R14: ffff88800e612008 R15: ffff88800e612000
[  187.586328][  T228] FS:  00007f5d053bc740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  187.586682][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  187.586939][  T228] CR2: 000055fda980a630 CR3: 000000000a2a6003 CR4: 0000000000772ef0
[  187.587669][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  187.587998][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  187.588330][  T228] PKRU: 55555554
[  187.588504][  T228] Call Trace:
[  187.588671][  T228]  <TASK>
[ 187.588774][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 187.589032][ T228] ? __warn (kernel/panic.c:748) 
[ 187.589202][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 187.589412][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 187.589639][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 187.589798][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 187.590010][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 187.590232][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 187.590447][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 187.590713][ 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) 
[ 187.590917][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 187.591139][ T228] register_netdevice (net/core/dev.c:11033) 
[ 187.591342][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 187.591546][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 187.591795][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 187.592062][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 187.592335][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 187.592588][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 187.592792][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 187.592996][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 187.593358][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 187.593628][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 187.593920][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 187.594270][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 187.594607][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 187.594874][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 187.595228][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 187.595577][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 187.595927][ T228] ksys_write (fs/read_write.c:731) 
[ 187.596197][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 187.596545][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 187.596876][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  187.597292][  T228] RIP: 0033:0x7f5d054fdb77
[ 187.597635][ 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
[  187.598761][  T228] RSP: 002b:00007ffd84d37968 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  187.599228][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5d054fdb77
[  187.599690][  T228] RDX: 0000000000000002 RSI: 0000556279785130 RDI: 0000000000000001
[  187.600180][  T228] RBP: 0000556279785130 R08: 0000000000000000 R09: 00007f5d055704e0
[  187.600652][  T228] R10: 00007f5d055703e0 R11: 0000000000000246 R12: 0000000000000002
[  187.601131][  T228] R13: 00007f5d055b9760 R14: 0000000000000002 R15: 00007f5d055b49c0
| [  189.348654][  T228] ------------[ cut here ]------------
| [ 189.349358][ 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:10596) 
| [  189.349801][  T228] Modules linked in: netdevsim
| [  189.350480][  T228] Tainted: [W]=WARN
[  189.350646][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 189.350901][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 189.351191][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  189.351879][  T228] RSP: 0018:ffffc90000a27910 EFLAGS: 00010246
[  189.352151][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  189.352489][  T228] RDX: 0000000000000000 RSI: ffff88800bbc2c98 RDI: ffff888008d28b28
[  189.352803][  T228] RBP: ffffffffaa124440 R08: 0000000000000000 R09: fffffbfff4ffd844
[  189.353175][  T228] R10: ffffffffa7fec227 R11: ffff888008d28040 R12: 0000000000000000
[  189.353521][  T228] R13: ffff88800bbc2128 R14: ffff88800bbc2008 R15: ffff88800bbc2000
[  189.353839][  T228] FS:  00007f5d053bc740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  189.354471][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  189.354732][  T228] CR2: 00007f5d054b5890 CR3: 000000000a2a6005 CR4: 0000000000772ef0
[  189.355036][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  189.355372][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  189.355677][  T228] PKRU: 55555554
[  189.355833][  T228] Call Trace:
[  189.356009][  T228]  <TASK>
[ 189.356176][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 189.356456][ T228] ? __warn (kernel/panic.c:748) 
[ 189.356629][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 189.356857][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 189.357100][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 189.357296][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 189.357538][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 189.357779][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 189.358076][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 189.358383][ 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) 
[ 189.358655][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 189.358921][ T228] register_netdevice (net/core/dev.c:11033) 
[ 189.359202][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 189.359480][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 189.359778][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 189.360126][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 189.360443][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 189.360756][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 189.360993][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 189.361273][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 189.361636][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 189.361853][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 189.362097][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 189.362313][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 189.362524][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 189.362705][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 189.362913][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 189.363162][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 189.363387][ T228] ksys_write (fs/read_write.c:731) 
[ 189.363548][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 189.363764][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 189.363981][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  189.364250][  T228] RIP: 0033:0x7f5d054fdb77
[ 189.364469][ 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
[  189.365182][  T228] RSP: 002b:00007ffd84d37968 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  189.365483][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5d054fdb77
[  189.365782][  T228] RDX: 0000000000000002 RSI: 0000556279785130 RDI: 0000000000000001
[  189.366099][  T228] RBP: 0000556279785130 R08: 0000000000000000 R09: 00007f5d055704e0
[  189.366396][  T228] R10: 00007f5d055703e0 R11: 0000000000000246 R12: 0000000000000002
[  189.366693][  T228] R13: 00007f5d055b9760 R14: 0000000000000002 R15: 00007f5d055b49c0
| [  191.098469][  T228] ------------[ cut here ]------------
| [ 191.098895][ 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:10596) 
| [  191.099331][  T228] Modules linked in: netdevsim
| [  191.099931][  T228] Tainted: [W]=WARN
[  191.100089][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 191.100328][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 191.100575][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  191.101265][  T228] RSP: 0018:ffffc90000a27910 EFLAGS: 00010246
[  191.101519][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  191.101818][  T228] RDX: 0000000000000000 RSI: ffff88800a29ac98 RDI: ffff888008d28b28
[  191.102118][  T228] RBP: ffffffffaa124440 R08: 0000000000000000 R09: fffffbfff4ffd844
[  191.102414][  T228] R10: ffffffffa7fec227 R11: ffff888008d28040 R12: 0000000000000000
[  191.102711][  T228] R13: ffff88800a29a128 R14: ffff88800a29a008 R15: ffff88800a29a000
[  191.103002][  T228] FS:  00007f5d053bc740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  191.103372][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  191.103617][  T228] CR2: 000055fda980a630 CR3: 000000000a2a6004 CR4: 0000000000772ef0
[  191.103909][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  191.104239][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  191.104522][  T228] PKRU: 55555554
[  191.104699][  T228] Call Trace:
[  191.105035][  T228]  <TASK>
[ 191.105155][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 191.105354][ T228] ? __warn (kernel/panic.c:748) 
[ 191.105508][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 191.105708][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 191.105916][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 191.106089][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 191.106288][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 191.106500][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 191.106706][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 191.106956][ 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) 
[ 191.107176][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 191.107382][ T228] register_netdevice (net/core/dev.c:11033) 
[ 191.107588][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 191.107800][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 191.108021][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 191.108284][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 191.108562][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 191.108820][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 191.109022][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 191.109235][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 191.109486][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 191.109677][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 191.109873][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 191.110085][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 191.110291][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 191.110449][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 191.110653][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 191.110859][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 191.111077][ T228] ksys_write (fs/read_write.c:731) 
[ 191.111230][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 191.111434][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 191.111629][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  191.111875][  T228] RIP: 0033:0x7f5d054fdb77
[ 191.112094][ 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
[  191.112776][  T228] RSP: 002b:00007ffd84d37968 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  191.113083][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5d054fdb77
[  191.113390][  T228] RDX: 0000000000000002 RSI: 0000556279785130 RDI: 0000000000000001
[  191.113676][  T228] RBP: 0000556279785130 R08: 0000000000000000 R09: 00007f5d055704e0
[  191.113971][  T228] R10: 00007f5d055703e0 R11: 0000000000000246 R12: 0000000000000002
[  191.114273][  T228] R13: 00007f5d055b9760 R14: 0000000000000002 R15: 00007f5d055b49c0
| [  192.840359][  T228] ------------[ cut here ]------------
| [ 192.840812][ 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:10596) 
| [  192.841325][  T228] Modules linked in: netdevsim
| [  192.842011][  T228] Tainted: [W]=WARN
[  192.842306][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 192.842601][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 192.842874][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  192.843627][  T228] RSP: 0018:ffffc90000a27910 EFLAGS: 00010246
[  192.843889][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  192.844244][  T228] RDX: 0000000000000000 RSI: ffff88800e622c98 RDI: ffff888008d28b28
[  192.844552][  T228] RBP: ffffffffaa124440 R08: 0000000000000000 R09: fffffbfff4ffd844
[  192.844860][  T228] R10: ffffffffa7fec227 R11: ffff888008d28040 R12: 0000000000000000
[  192.845250][  T228] R13: ffff88800e622128 R14: ffff88800e622008 R15: ffff88800e622000
[  192.845557][  T228] FS:  00007f5d053bc740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  192.845918][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  192.846272][  T228] CR2: 0000556279620408 CR3: 000000000a2a6002 CR4: 0000000000772ef0
[  192.846878][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  192.847298][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  192.847613][  T228] PKRU: 55555554
[  192.847780][  T228] Call Trace:
[  192.847969][  T228]  <TASK>
[ 192.848155][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 192.848401][ T228] ? __warn (kernel/panic.c:748) 
[ 192.848603][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 192.848817][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 192.849114][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 192.849288][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 192.849566][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 192.849798][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 192.850040][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 192.850481][ 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) 
[ 192.850807][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 192.851105][ T228] register_netdevice (net/core/dev.c:11033) 
[ 192.851404][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 192.851738][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 192.852140][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 192.852590][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 192.853137][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 192.853607][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 192.853955][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 192.854349][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 192.854791][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 192.855171][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 192.855597][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 192.855949][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 192.856340][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 192.856619][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 192.856972][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 192.857359][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 192.857736][ T228] ksys_write (fs/read_write.c:731) 
[ 192.858009][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 192.858400][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 192.858685][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  192.858947][  T228] RIP: 0033:0x7f5d054fdb77
[ 192.859277][ 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
[  192.860402][  T228] RSP: 002b:00007ffd84d37968 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  192.860869][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5d054fdb77
[  192.861350][  T228] RDX: 0000000000000002 RSI: 0000556279785130 RDI: 0000000000000001
[  192.861815][  T228] RBP: 0000556279785130 R08: 0000000000000000 R09: 00007f5d055704e0
[  192.862345][  T228] R10: 00007f5d055703e0 R11: 0000000000000246 R12: 0000000000000002
[  192.862810][  T228] R13: 00007f5d055b9760 R14: 0000000000000002 R15: 00007f5d055b49c0
| [  194.538567][  T228] ------------[ cut here ]------------
| [ 194.538978][ 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:10596) 
| [  194.539721][  T228] Modules linked in: netdevsim
| [  194.540472][  T228] Tainted: [W]=WARN
[  194.540651][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 194.540925][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 194.541224][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  194.541979][  T228] RSP: 0018:ffffc90000a27910 EFLAGS: 00010246
[  194.542270][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  194.542593][  T228] RDX: 0000000000000000 RSI: ffff8880051eac98 RDI: ffff888008d28b28
[  194.542927][  T228] RBP: ffffffffaa124440 R08: 0000000000000000 R09: fffffbfff4ffd844
[  194.543285][  T228] R10: ffffffffa7fec227 R11: ffff888008d28040 R12: 0000000000000000
[  194.543800][  T228] R13: ffff8880051ea128 R14: ffff8880051ea008 R15: ffff8880051ea000
[  194.544141][  T228] FS:  00007f5d053bc740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  194.544514][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  194.544812][  T228] CR2: 00007f17d97a1220 CR3: 000000000a2a6005 CR4: 0000000000772ef0
[  194.545154][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  194.545482][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  194.545810][  T228] PKRU: 55555554
[  194.545987][  T228] Call Trace:
[  194.546174][  T228]  <TASK>
[ 194.546298][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 194.546533][ T228] ? __warn (kernel/panic.c:748) 
[ 194.546715][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 194.546942][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 194.547185][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 194.547359][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 194.547584][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 194.547820][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 194.548064][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 194.548347][ 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) 
[ 194.548584][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 194.548881][ T228] register_netdevice (net/core/dev.c:11033) 
[ 194.549118][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 194.549354][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 194.549594][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 194.549880][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 194.550183][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 194.550506][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 194.550741][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 194.550981][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 194.551282][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 194.551510][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 194.551732][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 194.551969][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 194.552214][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 194.552408][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 194.552636][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 194.552875][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 194.553132][ T228] ksys_write (fs/read_write.c:731) 
[ 194.553322][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 194.553542][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 194.553777][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  194.554073][  T228] RIP: 0033:0x7f5d054fdb77
[ 194.554346][ 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
[  194.555039][  T228] RSP: 002b:00007ffd84d37968 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  194.555386][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5d054fdb77
[  194.555695][  T228] RDX: 0000000000000002 RSI: 0000556279785130 RDI: 0000000000000001
[  194.556000][  T228] RBP: 0000556279785130 R08: 0000000000000000 R09: 00007f5d055704e0
[  194.556328][  T228] R10: 00007f5d055703e0 R11: 0000000000000246 R12: 0000000000000002
[  194.556632][  T228] R13: 00007f5d055b9760 R14: 0000000000000002 R15: 00007f5d055b49c0
| [  196.218613][  T228] ------------[ cut here ]------------
| [ 196.219141][ 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:10596) 
| [  196.219775][  T228] Modules linked in: netdevsim
| [  196.220795][  T228] Tainted: [W]=WARN
[  196.221036][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 196.221514][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 196.221930][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  196.223091][  T228] RSP: 0018:ffffc90000a27910 EFLAGS: 00010246
[  196.223491][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  196.223969][  T228] RDX: 0000000000000000 RSI: ffff888008f4ac98 RDI: ffff888008d28b28
[  196.224466][  T228] RBP: ffffffffaa124440 R08: 0000000000000000 R09: fffffbfff4ffd844
[  196.224947][  T228] R10: ffffffffa7fec227 R11: ffff888008d28040 R12: 0000000000000000
[  196.225426][  T228] R13: ffff888008f4a128 R14: ffff888008f4a008 R15: ffff888008f4a000
[  196.225894][  T228] FS:  00007f5d053bc740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  196.226451][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  196.226851][  T228] CR2: 00007f17d97655a0 CR3: 000000000a2a6002 CR4: 0000000000772ef0
[  196.227346][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  196.227869][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  196.228809][  T228] PKRU: 55555554
[  196.229039][  T228] Call Trace:
[  196.229287][  T228]  <TASK>
[ 196.229445][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 196.229771][ T228] ? __warn (kernel/panic.c:748) 
[ 196.230011][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 196.230355][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 196.230698][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 196.230946][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 196.231303][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 196.231627][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 196.231975][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 196.232398][ 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) 
[ 196.232739][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 196.233096][ T228] register_netdevice (net/core/dev.c:11033) 
[ 196.233435][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 196.233748][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 196.234134][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 196.234556][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 196.234996][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 196.235411][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 196.235738][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 196.236101][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 196.236525][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 196.236854][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 196.237209][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 196.237498][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 196.237706][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 196.237868][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 196.238092][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 196.238306][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 196.238514][ T228] ksys_write (fs/read_write.c:731) 
[ 196.238673][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 196.238897][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 196.239243][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  196.239631][  T228] RIP: 0033:0x7f5d054fdb77
[ 196.240048][ 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
[  196.241169][  T228] RSP: 002b:00007ffd84d37968 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  196.241644][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5d054fdb77
[  196.242131][  T228] RDX: 0000000000000002 RSI: 0000556279785130 RDI: 0000000000000001
[  196.242596][  T228] RBP: 0000556279785130 R08: 0000000000000000 R09: 00007f5d055704e0
[  196.243084][  T228] R10: 00007f5d055703e0 R11: 0000000000000246 R12: 0000000000000002


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