======================================
| 0
| xx__-> [   10.073367][  T227] ------------[ cut here ]------------
| [ 10.073712][ T227] WARNING: CPU: 0 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   10.074159][  T227] Modules linked in: netdevsim
[   10.074965][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.075430][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.075871][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   10.077056][  T227] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[   10.077636][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.078164][  T227] RDX: 0000000000000000 RSI: ffff88800b0e2c98 RDI: ffff88800bdb8b28
[   10.078649][  T227] RBP: ffffffffbbb23440 R08: 0000000000000000 R09: fffffbfff733d83c
[   10.079158][  T227] R10: ffffffffb99ec1e7 R11: ffff88800bdb8040 R12: 0000000000000000
[   10.079661][  T227] R13: ffff88800b0e2128 R14: ffff88800b0e2008 R15: ffff88800b0e2000
[   10.080199][  T227] FS:  00007ff13fbbe740(0000) GS:ffff88802f600000(0000) knlGS:0000000000000000
[   10.080783][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.081221][  T227] CR2: 000055b34a33147c CR3: 00000000052d8006 CR4: 0000000000772ef0
[   10.081715][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.082234][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.082772][  T227] PKRU: 55555554
[   10.083041][  T227] Call Trace:
[   10.083324][  T227]  <TASK>
[ 10.083509][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.083847][ T227] ? __warn (kernel/panic.c:748) 
[ 10.084124][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.084468][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.084812][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.085075][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.085427][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.085780][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.086145][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.086541][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 10.086868][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.087222][ T227] register_netdevice (net/core/dev.c:11003) 
[ 10.087555][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.087880][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.088231][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.088638][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.089080][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 10.089511][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.089828][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 10.090210][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 10.090649][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.090975][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.091305][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 10.091629][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.091947][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.092214][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.092532][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 10.092855][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.093201][ T227] ksys_write (fs/read_write.c:731) 
[ 10.093451][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.093796][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.094150][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.094552][  T227] RIP: 0033:0x7ff13fcffb77
[ 10.094895][ T227] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   10.096035][  T227] RSP: 002b:00007fff288ad9d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.096547][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff13fcffb77
[   10.097032][  T227] RDX: 0000000000000002 RSI: 000055b34a51a130 RDI: 0000000000000001
[   10.097530][  T227] RBP: 000055b34a51a130 R08: 0000000000000000 R09: 00007ff13fd724e0
[   10.098020][  T227] R10: 00007ff13fd723e0 R11: 0000000000000246 R12: 0000000000000002
[   10.098517][  T227] R13: 00007ff13fdbb760 R14: 0000000000000002 R15: 00007ff13fdb69c0
| [  138.431892][  T227] ------------[ cut here ]------------
| [ 138.432160][ T227] WARNING: CPU: 0 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  138.432568][  T227] Modules linked in: netdevsim
| [  138.433193][  T227] Tainted: [W]=WARN
[  138.433356][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 138.433611][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 138.433868][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  138.434693][  T227] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  138.434952][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  138.435260][  T227] RDX: 0000000000000000 RSI: ffff888002052c98 RDI: ffff88800bdb8b28
[  138.435556][  T227] RBP: ffffffffbbb23440 R08: 0000000000000000 R09: fffffbfff733d83c
[  138.435866][  T227] R10: ffffffffb99ec1e7 R11: ffff88800bdb8040 R12: 0000000000000000
[  138.436186][  T227] R13: ffff888002052128 R14: ffff888002052008 R15: ffff888002052000
[  138.436496][  T227] FS:  00007ff13fbbe740(0000) GS:ffff88802f600000(0000) knlGS:0000000000000000
[  138.436856][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  138.437120][  T227] CR2: 000055b34a3564f8 CR3: 00000000052d8006 CR4: 0000000000772ef0
[  138.437429][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  138.437730][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  138.438028][  T227] PKRU: 55555554
[  138.438186][  T227] Call Trace:
[  138.438338][  T227]  <TASK>
[ 138.438444][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 138.438653][ T227] ? __warn (kernel/panic.c:748) 
[ 138.438816][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 138.439027][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 138.439259][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 138.439432][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 138.439643][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 138.439858][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 138.440076][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 138.440347][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 138.440558][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 138.440767][ T227] register_netdevice (net/core/dev.c:11003) 
[ 138.440983][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 138.441215][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 138.441442][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 138.441709][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 138.441992][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 138.442273][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 138.442483][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 138.442703][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 138.442974][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 138.443189][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 138.443402][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 138.443613][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 138.443829][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 138.443997][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 138.444211][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 138.444430][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 138.444650][ T227] ksys_write (fs/read_write.c:731) 
[ 138.444813][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 138.445036][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 138.445255][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  138.445520][  T227] RIP: 0033:0x7ff13fcffb77
[ 138.445736][ T227] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  138.446472][  T227] RSP: 002b:00007fff288ac668 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  138.446785][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff13fcffb77
[  138.447105][  T227] RDX: 0000000000000002 RSI: 000055b34a51a130 RDI: 0000000000000001
[  138.447413][  T227] RBP: 000055b34a51a130 R08: 0000000000000000 R09: 00007ff13fd724e0
[  138.447720][  T227] R10: 00007ff13fd723e0 R11: 0000000000000246 R12: 0000000000000002
[  138.448031][  T227] R13: 00007ff13fdbb760 R14: 0000000000000002 R15: 00007ff13fdb69c0
| [  140.022474][  T227] ------------[ cut here ]------------
| [ 140.022804][ T227] WARNING: CPU: 0 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  140.023268][  T227] Modules linked in: netdevsim
| [  140.023880][  T227] Tainted: [W]=WARN
[  140.024034][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 140.024291][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 140.024544][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  140.025259][  T227] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  140.025508][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  140.025804][  T227] RDX: 0000000000000000 RSI: ffff88800a4a2c98 RDI: ffff88800bdb8b28
[  140.026117][  T227] RBP: ffffffffbbb23440 R08: 0000000000000000 R09: fffffbfff733d83c
[  140.026415][  T227] R10: ffffffffb99ec1e7 R11: ffff88800bdb8040 R12: 0000000000000000
[  140.026709][  T227] R13: ffff88800a4a2128 R14: ffff88800a4a2008 R15: ffff88800a4a2000
[  140.027004][  T227] FS:  00007ff13fbbe740(0000) GS:ffff88802f600000(0000) knlGS:0000000000000000
[  140.027365][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  140.027613][  T227] CR2: 000055b34a33147c CR3: 00000000052d8001 CR4: 0000000000772ef0
[  140.027907][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  140.028208][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  140.028503][  T227] PKRU: 55555554
[  140.028661][  T227] Call Trace:
[  140.028811][  T227]  <TASK>
[ 140.028915][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 140.029121][ T227] ? __warn (kernel/panic.c:748) 
[ 140.029286][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 140.029488][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 140.029695][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 140.029847][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 140.030060][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 140.030278][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 140.030488][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 140.030741][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 140.030946][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 140.031156][ T227] register_netdevice (net/core/dev.c:11003) 
[ 140.031365][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 140.031583][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 140.031799][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 140.032056][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 140.032337][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 140.032598][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 140.032799][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 140.033015][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 140.033278][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 140.033478][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 140.033678][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 140.033883][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 140.034086][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 140.034257][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 140.034468][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 140.034676][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 140.034887][ T227] ksys_write (fs/read_write.c:731) 
[ 140.035042][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 140.035262][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 140.035463][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  140.035709][  T227] RIP: 0033:0x7ff13fcffb77
[ 140.035922][ T227] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  140.036615][  T227] RSP: 002b:00007fff288ac668 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  140.036915][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff13fcffb77
[  140.037228][  T227] RDX: 0000000000000002 RSI: 000055b34a51a130 RDI: 0000000000000001
[  140.037524][  T227] RBP: 000055b34a51a130 R08: 0000000000000000 R09: 00007ff13fd724e0
[  140.037816][  T227] R10: 00007ff13fd723e0 R11: 0000000000000246 R12: 0000000000000002
[  140.038119][  T227] R13: 00007ff13fdbb760 R14: 0000000000000002 R15: 00007ff13fdb69c0
| [  141.527152][  T227] ------------[ cut here ]------------
| [ 141.527463][ T227] WARNING: CPU: 3 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  141.527842][  T227] Modules linked in: netdevsim
| [  141.528521][  T227] Tainted: [W]=WARN
[  141.528670][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 141.528914][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 141.529195][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  141.529887][  T227] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  141.530144][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  141.530433][  T227] RDX: 0000000000000000 RSI: ffff88800a44ac98 RDI: ffff88800bdb8b28
[  141.530722][  T227] RBP: ffffffffbbb23440 R08: 0000000000000000 R09: fffffbfff733d83c
[  141.531011][  T227] R10: ffffffffb99ec1e7 R11: ffff88800bdb8040 R12: 0000000000000000
[  141.531318][  T227] R13: ffff88800a44a128 R14: ffff88800a44a008 R15: ffff88800a44a000
[  141.531600][  T227] FS:  00007ff13fbbe740(0000) GS:ffff88802f780000(0000) knlGS:0000000000000000
[  141.531937][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  141.532198][  T227] CR2: 000055b34a33147c CR3: 00000000052d8004 CR4: 0000000000772ef0
[  141.532488][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  141.532775][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  141.533059][  T227] PKRU: 55555554
[  141.533219][  T227] Call Trace:
[  141.533367][  T227]  <TASK>
[ 141.533467][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 141.533662][ T227] ? __warn (kernel/panic.c:748) 
[ 141.533815][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 141.534015][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 141.534228][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 141.534381][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 141.534575][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 141.534787][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 141.534996][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 141.535260][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 141.535464][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 141.535669][ T227] register_netdevice (net/core/dev.c:11003) 
[ 141.535871][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 141.536076][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 141.536299][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 141.536551][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 141.536822][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 141.537087][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 141.537307][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 141.537508][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 141.537763][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 141.537957][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 141.538163][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 141.538364][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 141.538568][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 141.538727][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 141.538930][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 141.539145][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 141.539362][ T227] ksys_write (fs/read_write.c:731) 
[ 141.539511][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 141.539714][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 141.539911][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  141.540163][  T227] RIP: 0033:0x7ff13fcffb77
[ 141.540367][ T227] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  141.541047][  T227] RSP: 002b:00007fff288ac668 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  141.541352][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff13fcffb77
[  141.541652][  T227] RDX: 0000000000000002 RSI: 000055b34a51a130 RDI: 0000000000000001
[  141.541944][  T227] RBP: 000055b34a51a130 R08: 0000000000000000 R09: 00007ff13fd724e0
[  141.542252][  T227] R10: 00007ff13fd723e0 R11: 0000000000000246 R12: 0000000000000002
[  141.542543][  T227] R13: 00007ff13fdbb760 R14: 0000000000000002 R15: 00007ff13fdb69c0
| [  143.044516][  T227] ------------[ cut here ]------------
| [ 143.044836][ T227] WARNING: CPU: 3 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  143.045251][  T227] Modules linked in: netdevsim
| [  143.045846][  T227] Tainted: [W]=WARN
[  143.045995][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 143.046249][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 143.046489][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  143.047153][  T227] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  143.047401][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  143.047688][  T227] RDX: 0000000000000000 RSI: ffff888009822c98 RDI: ffff88800bdb8b28
[  143.047978][  T227] RBP: ffffffffbbb23440 R08: 0000000000000000 R09: fffffbfff733d83c
[  143.048277][  T227] R10: ffffffffb99ec1e7 R11: ffff88800bdb8040 R12: 0000000000000000
[  143.048567][  T227] R13: ffff888009822128 R14: ffff888009822008 R15: ffff888009822000
[  143.048859][  T227] FS:  00007ff13fbbe740(0000) GS:ffff88802f780000(0000) knlGS:0000000000000000
[  143.049217][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  143.049474][  T227] CR2: 000055b34a363018 CR3: 00000000052d8004 CR4: 0000000000772ef0
[  143.049767][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  143.050062][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  143.050368][  T227] PKRU: 55555554
[  143.050518][  T227] Call Trace:
[  143.050666][  T227]  <TASK>
[ 143.050772][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 143.050972][ T227] ? __warn (kernel/panic.c:748) 
[ 143.051139][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 143.051340][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 143.051548][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 143.051703][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 143.051899][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 143.052120][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 143.052329][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 143.052582][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 143.052793][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 143.053015][ T227] register_netdevice (net/core/dev.c:11003) 
[ 143.053230][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 143.053440][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 143.053654][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 143.053908][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 143.054182][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 143.054443][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 143.054642][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 143.054850][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 143.055114][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 143.055309][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 143.055511][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 143.055712][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 143.055916][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 143.056075][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 143.056288][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 143.056497][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 143.056704][ T227] ksys_write (fs/read_write.c:731) 
[ 143.056855][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 143.057063][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 143.057278][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  143.057521][  T227] RIP: 0033:0x7ff13fcffb77
[ 143.057726][ T227] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  143.058418][  T227] RSP: 002b:00007fff288ac668 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  143.058715][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff13fcffb77
[  143.059001][  T227] RDX: 0000000000000002 RSI: 000055b34a51a130 RDI: 0000000000000001
[  143.059307][  T227] RBP: 000055b34a51a130 R08: 0000000000000000 R09: 00007ff13fd724e0
[  143.059588][  T227] R10: 00007ff13fd723e0 R11: 0000000000000246 R12: 0000000000000002
[  143.059877][  T227] R13: 00007ff13fdbb760 R14: 0000000000000002 R15: 00007ff13fdb69c0
| [  144.542516][  T227] ------------[ cut here ]------------
| [ 144.542765][ T227] WARNING: CPU: 0 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  144.543184][  T227] Modules linked in: netdevsim
| [  144.543809][  T227] Tainted: [W]=WARN
[  144.543969][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 144.544238][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 144.544501][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  144.545228][  T227] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  144.545496][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  144.545802][  T227] RDX: 0000000000000000 RSI: ffff88800da3ac98 RDI: ffff88800bdb8b28
[  144.546114][  T227] RBP: ffffffffbbb23440 R08: 0000000000000000 R09: fffffbfff733d83c
[  144.546417][  T227] R10: ffffffffb99ec1e7 R11: ffff88800bdb8040 R12: 0000000000000000
[  144.546722][  T227] R13: ffff88800da3a128 R14: ffff88800da3a008 R15: ffff88800da3a000
[  144.547025][  T227] FS:  00007ff13fbbe740(0000) GS:ffff88802f600000(0000) knlGS:0000000000000000
[  144.547373][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  144.547620][  T227] CR2: 000055b34a3565e8 CR3: 00000000052d8004 CR4: 0000000000772ef0
[  144.547915][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  144.548211][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  144.548527][  T227] PKRU: 55555554
[  144.548679][  T227] Call Trace:
[  144.548828][  T227]  <TASK>
[ 144.548931][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 144.549172][ T227] ? __warn (kernel/panic.c:748) 
[ 144.549348][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 144.549555][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 144.549762][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 144.549915][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 144.550120][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 144.550333][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 144.550540][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 144.550798][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 144.551002][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 144.551213][ T227] register_netdevice (net/core/dev.c:11003) 
[ 144.551422][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 144.551629][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 144.551845][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 144.552115][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 144.552391][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 144.552650][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 144.552863][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 144.553082][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 144.553357][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 144.553563][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 144.553762][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 144.553973][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 144.554213][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 144.554380][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 144.554590][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 144.554811][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 144.555031][ T227] ksys_write (fs/read_write.c:731) 
[ 144.555200][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 144.555425][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 144.555634][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  144.555890][  T227] RIP: 0033:0x7ff13fcffb77
[ 144.556113][ T227] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  144.556845][  T227] RSP: 002b:00007fff288ac668 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  144.557169][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff13fcffb77
[  144.557481][  T227] RDX: 0000000000000002 RSI: 000055b34a51a130 RDI: 0000000000000001
[  144.557790][  T227] RBP: 000055b34a51a130 R08: 0000000000000000 R09: 00007ff13fd724e0
[  144.558092][  T227] R10: 00007ff13fd723e0 R11: 0000000000000246 R12: 0000000000000002
[  144.558400][  T227] R13: 00007ff13fdbb760 R14: 0000000000000002 R15: 00007ff13fdb69c0
| [  146.079366][  T227] ------------[ cut here ]------------
| [ 146.079610][ T227] WARNING: CPU: 3 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  146.080013][  T227] Modules linked in: netdevsim
| [  146.080641][  T227] Tainted: [W]=WARN
[  146.080793][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 146.081034][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 146.081296][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  146.081949][  T227] RSP: 0000:ffffc90000af7910 EFLAGS: 00010246
[  146.082200][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  146.082483][  T227] RDX: 0000000000000000 RSI: ffff88800b0e2c98 RDI: ffff88800bdb8b28
[  146.082771][  T227] RBP: ffffffffbbb23440 R08: 0000000000000000 R09: fffffbfff733d83c
[  146.083051][  T227] R10: ffffffffb99ec1e7 R11: ffff88800bdb8040 R12: 0000000000000000
[  146.083347][  T227] R13: ffff88800b0e2128 R14: ffff88800b0e2008 R15: ffff88800b0e2000
[  146.083639][  T227] FS:  00007ff13fbbe740(0000) GS:ffff88802f780000(0000) knlGS:0000000000000000
[  146.083981][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  146.084236][  T227] CR2: 00007f70daec69d0 CR3: 00000000052d8004 CR4: 0000000000772ef0
[  146.084525][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  146.084820][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  146.085135][  T227] PKRU: 55555554
[  146.085286][  T227] Call Trace:
[  146.085432][  T227]  <TASK>
[ 146.085534][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 146.085730][ T227] ? __warn (kernel/panic.c:748) 
[ 146.085885][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 146.086091][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 146.086312][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 146.086465][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 146.086664][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 146.086879][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 146.087094][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 146.087357][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 146.087565][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 146.087767][ T227] register_netdevice (net/core/dev.c:11003) 
[ 146.087972][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 146.088193][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 146.088409][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 146.088670][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 146.088943][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 146.089216][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 146.089429][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 146.089639][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 146.089890][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 146.090088][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 146.090302][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 146.090507][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 146.090716][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 146.090876][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 146.091075][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 146.091301][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 146.091511][ T227] ksys_write (fs/read_write.c:731) 
[ 146.091668][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 146.091877][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 146.092074][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  146.092333][  T227] RIP: 0033:0x7ff13fcffb77
[ 146.092537][ T227] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  146.093230][  T227] RSP: 002b:00007fff288ac668 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  146.093532][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff13fcffb77
[  146.093823][  T227] RDX: 0000000000000002 RSI: 000055b34a51a130 RDI: 0000000000000001
[  146.094126][  T227] RBP: 000055b34a51a130 R08: 0000000000000000 R09: 00007ff13fd724e0
[  146.094419][  T227] R10: 00007ff13fd723e0 R11: 0000000000000246 R12: 0000000000000002
[  146.094708][  T227] R13: 00007ff13fdbb760 R14: 0000000000000002 R15: 00007ff13fdb69c0
| [  147.564441][  T227] ------------[ cut here ]------------
| [ 147.564692][ T227] WARNING: CPU: 3 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  147.565077][  T227] Modules linked in: netdevsim
| [  147.565693][  T227] Tainted: [W]=WARN
[  147.565843][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 147.566080][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 147.566343][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  147.567017][  T227] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  147.567276][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  147.567556][  T227] RDX: 0000000000000000 RSI: ffff888002052c98 RDI: ffff88800bdb8b28
[  147.567854][  T227] RBP: ffffffffbbb23440 R08: 0000000000000000 R09: fffffbfff733d83c
[  147.568152][  T227] R10: ffffffffb99ec1e7 R11: ffff88800bdb8040 R12: 0000000000000000
[  147.568440][  T227] R13: ffff888002052128 R14: ffff888002052008 R15: ffff888002052000
[  147.568733][  T227] FS:  00007ff13fbbe740(0000) GS:ffff88802f780000(0000) knlGS:0000000000000000
[  147.569068][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  147.569339][  T227] CR2: 000055b34a33147c CR3: 00000000052d8004 CR4: 0000000000772ef0
[  147.569628][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  147.569914][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  147.570209][  T227] PKRU: 55555554
[  147.570360][  T227] Call Trace:
[  147.570509][  T227]  <TASK>
[ 147.570611][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 147.570809][ T227] ? __warn (kernel/panic.c:748) 
[ 147.570968][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 147.571177][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 147.571383][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 147.571535][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 147.571732][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 147.571948][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 147.572159][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 147.572405][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 147.572611][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 147.572814][ T227] register_netdevice (net/core/dev.c:11003) 
[ 147.573013][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 147.573227][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 147.573441][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 147.573697][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 147.573964][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 147.574230][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 147.574431][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 147.574637][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 147.574887][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 147.575084][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 147.575292][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 147.575488][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 147.575687][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 147.575844][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 147.576046][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 147.576264][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 147.576472][ T227] ksys_write (fs/read_write.c:731) 
[ 147.576622][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 147.576831][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 147.577031][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  147.577284][  T227] RIP: 0033:0x7ff13fcffb77
[ 147.577486][ T227] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  147.578174][  T227] RSP: 002b:00007fff288ac668 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  147.578471][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff13fcffb77
[  147.578766][  T227] RDX: 0000000000000002 RSI: 000055b34a51a130 RDI: 0000000000000001
[  147.579057][  T227] RBP: 000055b34a51a130 R08: 0000000000000000 R09: 00007ff13fd724e0
[  147.579387][  T227] R10: 00007ff13fd723e0 R11: 0000000000000246 R12: 0000000000000002
[  147.579677][  T227] R13: 00007ff13fdbb760 R14: 0000000000000002 R15: 00007ff13fdb69c0
| [  149.077863][  T227] ------------[ cut here ]------------
| [ 149.078208][ T227] WARNING: CPU: 3 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  149.078609][  T227] Modules linked in: netdevsim
| [  149.079215][  T227] Tainted: [W]=WARN
[  149.079379][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 149.079628][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 149.079878][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  149.080582][  T227] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  149.080835][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  149.081141][  T227] RDX: 0000000000000000 RSI: ffff88800a4a2c98 RDI: ffff88800bdb8b28
[  149.081440][  T227] RBP: ffffffffbbb23440 R08: 0000000000000000 R09: fffffbfff733d83c
[  149.081734][  T227] R10: ffffffffb99ec1e7 R11: ffff88800bdb8040 R12: 0000000000000000
[  149.082021][  T227] R13: ffff88800a4a2128 R14: ffff88800a4a2008 R15: ffff88800a4a2000
[  149.082313][  T227] FS:  00007ff13fbbe740(0000) GS:ffff88802f780000(0000) knlGS:0000000000000000
[  149.082651][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  149.082897][  T227] CR2: 00007fcbae30d000 CR3: 00000000052d8006 CR4: 0000000000772ef0
[  149.083192][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  149.083478][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  149.083762][  T227] PKRU: 55555554
[  149.083907][  T227] Call Trace:
[  149.084051][  T227]  <TASK>
[ 149.084161][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 149.084354][ T227] ? __warn (kernel/panic.c:748) 
[ 149.084504][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 149.084699][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 149.084901][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 149.085047][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 149.085248][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 149.085456][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 149.085661][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 149.085907][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 149.086118][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 149.086316][ T227] register_netdevice (net/core/dev.c:11003) 
[ 149.086518][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 149.086724][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 149.086937][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 149.087197][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 149.087463][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 149.087712][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 149.087908][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 149.088120][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 149.088369][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 149.088562][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 149.088753][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 149.088951][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 149.089160][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 149.089320][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 149.089518][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 149.089718][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 149.089925][ T227] ksys_write (fs/read_write.c:731) 
[ 149.090072][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 149.090284][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 149.090483][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  149.090722][  T227] RIP: 0033:0x7ff13fcffb77
[ 149.090921][ T227] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  149.091593][  T227] RSP: 002b:00007fff288ac668 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  149.091881][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff13fcffb77
[  149.092176][  T227] RDX: 0000000000000002 RSI: 000055b34a51a130 RDI: 0000000000000001
[  149.092467][  T227] RBP: 000055b34a51a130 R08: 0000000000000000 R09: 00007ff13fd724e0
[  149.092752][  T227] R10: 00007ff13fd723e0 R11: 0000000000000246 R12: 0000000000000002
[  149.093038][  T227] R13: 00007ff13fdbb760 R14: 0000000000000002 R15: 00007ff13fdb69c0
| [  150.617179][  T227] ------------[ cut here ]------------
| [ 150.617428][ T227] WARNING: CPU: 3 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  150.617818][  T227] Modules linked in: netdevsim
| [  150.619775][  T227] Tainted: [W]=WARN
[  150.619927][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 150.620307][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 150.620553][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  150.621235][  T227] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  150.621471][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  150.621756][  T227] RDX: 0000000000000000 RSI: ffff88800a44ac98 RDI: ffff88800bdb8b28
[  150.622044][  T227] RBP: ffffffffbbb23440 R08: 0000000000000000 R09: fffffbfff733d83c
[  150.622334][  T227] R10: ffffffffb99ec1e7 R11: ffff88800bdb8040 R12: 0000000000000000
[  150.622612][  T227] R13: ffff88800a44a128 R14: ffff88800a44a008 R15: ffff88800a44a000
[  150.622888][  T227] FS:  00007ff13fbbe740(0000) GS:ffff88802f780000(0000) knlGS:0000000000000000
[  150.623225][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  150.623461][  T227] CR2: 000055b34a33147c CR3: 00000000052d8006 CR4: 0000000000772ef0
[  150.623740][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  150.624019][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  150.624308][  T227] PKRU: 55555554
[  150.624450][  T227] Call Trace:
[  150.624592][  T227]  <TASK>
[ 150.624690][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 150.624882][ T227] ? __warn (kernel/panic.c:748) 
[ 150.625029][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 150.625239][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 150.625438][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 150.625587][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 150.625781][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 150.625983][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 150.626193][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 150.626436][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 150.626662][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 150.626859][ T227] register_netdevice (net/core/dev.c:11003) 
[ 150.627057][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 150.627270][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 150.627475][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 150.627722][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 150.627991][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 150.628250][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 150.628442][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 150.628643][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 150.628885][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 150.629072][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 150.629279][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 150.629475][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 150.629673][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 150.629829][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 150.630023][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 150.630235][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 150.630433][ T227] ksys_write (fs/read_write.c:731) 
[ 150.630576][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 150.630773][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 150.630963][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  150.631205][  T227] RIP: 0033:0x7ff13fcffb77
[ 150.631402][ T227] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  150.632057][  T227] RSP: 002b:00007fff288ac668 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  150.632352][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff13fcffb77
[  150.632632][  T227] RDX: 0000000000000002 RSI: 000055b34a51a130 RDI: 0000000000000001
[  150.632914][  T227] RBP: 000055b34a51a130 R08: 0000000000000000 R09: 00007ff13fd724e0
[  150.633201][  T227] R10: 00007ff13fd723e0 R11: 0000000000000246 R12: 0000000000000002
[  150.633483][  T227] R13: 00007ff13fdbb760 R14: 0000000000000002 R15: 00007ff13fdb69c0
| [  152.172499][  T227] ------------[ cut here ]------------
| [ 152.172819][ T227] WARNING: CPU: 0 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  152.174549][  T227] Modules linked in: netdevsim
| [  152.175324][  T227] Tainted: [W]=WARN
[  152.175475][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 152.175720][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 152.175978][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  152.176779][  T227] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  152.177034][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  152.177410][  T227] RDX: 0000000000000000 RSI: ffff888009822c98 RDI: ffff88800bdb8b28
[  152.177704][  T227] RBP: ffffffffbbb23440 R08: 0000000000000000 R09: fffffbfff733d83c
[  152.178001][  T227] R10: ffffffffb99ec1e7 R11: ffff88800bdb8040 R12: 0000000000000000
[  152.178380][  T227] R13: ffff888009822128 R14: ffff888009822008 R15: ffff888009822000
[  152.178696][  T227] FS:  00007ff13fbbe740(0000) GS:ffff88802f600000(0000) knlGS:0000000000000000
[  152.179053][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  152.179409][  T227] CR2: 000055b34a33147c CR3: 00000000052d8003 CR4: 0000000000772ef0
[  152.179723][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  152.180032][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  152.180414][  T227] PKRU: 55555554
[  152.180572][  T227] Call Trace:
[  152.180727][  T227]  <TASK>
[ 152.180830][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 152.181040][ T227] ? __warn (kernel/panic.c:748) 
[ 152.181215][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 152.181429][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 152.181654][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 152.181813][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 152.182022][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 152.182249][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 152.182459][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 152.182709][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 152.182923][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 152.183161][ T227] register_netdevice (net/core/dev.c:11003) 
[ 152.183368][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 152.183589][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 152.183810][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 152.184066][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 152.184350][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 152.184610][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 152.184813][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 152.185028][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 152.185296][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 152.185494][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 152.185696][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 152.185901][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 152.186118][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 152.186280][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 152.186488][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 152.186703][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 152.186913][ T227] ksys_write (fs/read_write.c:731) 
[ 152.187067][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 152.187286][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 152.187491][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  152.187738][  T227] RIP: 0033:0x7ff13fcffb77
[ 152.187948][ T227] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  152.188655][  T227] RSP: 002b:00007fff288ac668 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  152.188976][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff13fcffb77
[  152.189307][  T227] RDX: 0000000000000002 RSI: 000055b34a51a130 RDI: 0000000000000001
[  152.189605][  T227] RBP: 000055b34a51a130 R08: 0000000000000000 R09: 00007ff13fd724e0
[  152.189902][  T227] R10: 00007ff13fd723e0 R11: 0000000000000246 R12: 0000000000000002
[  152.190207][  T227] R13: 00007ff13fdbb760 R14: 0000000000000002 R15: 00007ff13fdb69c0
| [  156.225396][  T227] ------------[ cut here ]------------
| [ 156.225765][ T227] WARNING: CPU: 0 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  156.226180][  T227] Modules linked in: netdevsim
| [  156.226875][  T227] Tainted: [W]=WARN
[  156.227029][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 156.227290][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 156.227549][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  156.228251][  T227] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  156.228514][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  156.228808][  T227] RDX: 0000000000000000 RSI: ffff88800b0e2c98 RDI: ffff88800bdb8b28
[  156.229112][  T227] RBP: ffffffffbbb23440 R08: 0000000000000000 R09: fffffbfff733d83c
[  156.229424][  T227] R10: ffffffffb99ec1e7 R11: ffff88800bdb8040 R12: 0000000000000000
[  156.229720][  T227] R13: ffff88800b0e2128 R14: ffff88800b0e2008 R15: ffff88800b0e2000
[  156.230025][  T227] FS:  00007ff13fbbe740(0000) GS:ffff88802f600000(0000) knlGS:0000000000000000
[  156.230381][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  156.230632][  T227] CR2: 00007ff13fcb7890 CR3: 00000000052d8005 CR4: 0000000000772ef0
[  156.230934][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  156.231240][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  156.231537][  T227] PKRU: 55555554
[  156.231696][  T227] Call Trace:
[  156.231846][  T227]  <TASK>
[ 156.231950][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 156.232163][ T227] ? __warn (kernel/panic.c:748) 
[ 156.232325][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 156.232527][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 156.232742][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 156.232900][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 156.233120][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 156.233344][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 156.233554][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 156.233807][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 156.234015][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 156.234235][ T227] register_netdevice (net/core/dev.c:11003) 
[ 156.234446][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 156.234667][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 156.234891][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 156.235170][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 156.235452][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 156.235720][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 156.235936][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 156.236161][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 156.236422][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 156.236625][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 156.236838][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 156.237067][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 156.237293][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 156.237461][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 156.237666][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 156.237881][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 156.238091][ T227] ksys_write (fs/read_write.c:731) 
[ 156.238263][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 156.238484][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 156.238690][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  156.238945][  T227] RIP: 0033:0x7ff13fcffb77
[ 156.239164][ T227] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  156.239887][  T227] RSP: 002b:00007fff288abdc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  156.240208][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff13fcffb77
[  156.240526][  T227] RDX: 0000000000000002 RSI: 000055b34a51a130 RDI: 0000000000000001
[  156.240844][  T227] RBP: 000055b34a51a130 R08: 0000000000000000 R09: 00007ff13fd724e0
[  156.241168][  T227] R10: 00007ff13fd723e0 R11: 0000000000000246 R12: 0000000000000002
[  156.241491][  T227] R13: 00007ff13fdbb760 R14: 0000000000000002 R15: 00007ff13fdb69c0
| [  157.870394][  T227] ------------[ cut here ]------------
| [ 157.870733][ T227] WARNING: CPU: 2 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  157.871237][  T227] Modules linked in: netdevsim
| [  157.871872][  T227] Tainted: [W]=WARN
[  157.872038][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 157.872320][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 157.872608][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  157.873363][  T227] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  157.873645][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  157.873980][  T227] RDX: 0000000000000000 RSI: ffff88800da3ac98 RDI: ffff88800bdb8b28
[  157.874315][  T227] RBP: ffffffffbbb23440 R08: 0000000000000000 R09: fffffbfff733d83c
[  157.874638][  T227] R10: ffffffffb99ec1e7 R11: ffff88800bdb8040 R12: 0000000000000000
[  157.874953][  T227] R13: ffff88800da3a128 R14: ffff88800da3a008 R15: ffff88800da3a000
[  157.875293][  T227] FS:  00007ff13fbbe740(0000) GS:ffff88802f700000(0000) knlGS:0000000000000000
[  157.875655][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  157.876058][  T227] CR2: 000055b34a3b5408 CR3: 00000000052d8002 CR4: 0000000000772ef0
[  157.876398][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  157.876723][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  157.877041][  T227] PKRU: 55555554
[  157.877232][  T227] Call Trace:
[  157.877401][  T227]  <TASK>
[ 157.877517][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 157.877735][ T227] ? __warn (kernel/panic.c:748) 
[ 157.877903][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 157.878130][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 157.878352][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 157.878526][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 157.878744][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 157.878973][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 157.879220][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 157.879496][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 157.879733][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 157.879965][ T227] register_netdevice (net/core/dev.c:11003) 
[ 157.880215][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 157.880452][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 157.880687][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 157.880973][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 157.881285][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 157.881568][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 157.881790][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 157.882028][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 157.882312][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 157.882526][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 157.882754][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 157.882975][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 157.883226][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 157.883402][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 157.883621][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 157.883866][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 157.884115][ T227] ksys_write (fs/read_write.c:731) 
[ 157.884297][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 157.884522][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 157.884747][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  157.885011][  T227] RIP: 0033:0x7ff13fcffb77
[ 157.885244][ T227] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  157.885956][  T227] RSP: 002b:00007fff288abdc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  157.886302][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff13fcffb77
[  157.886640][  T227] RDX: 0000000000000002 RSI: 000055b34a51a130 RDI: 0000000000000001
[  157.886973][  T227] RBP: 000055b34a51a130 R08: 0000000000000000 R09: 00007ff13fd724e0
[  157.887304][  T227] R10: 00007ff13fd723e0 R11: 0000000000000246 R12: 0000000000000002
[  157.887634][  T227] R13: 00007ff13fdbb760 R14: 0000000000000002 R15: 00007ff13fdb69c0
| [  159.472864][  T227] ------------[ cut here ]------------
| [ 159.474640][ T227] WARNING: CPU: 2 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  159.475242][  T227] Modules linked in: netdevsim
| [  159.476023][  T227] Tainted: [W]=WARN
[  159.476270][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 159.476533][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 159.476806][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  159.477528][  T227] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  159.477798][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  159.478119][  T227] RDX: 0000000000000000 RSI: ffff888002052c98 RDI: ffff88800bdb8b28
[  159.478431][  T227] RBP: ffffffffbbb23440 R08: 0000000000000000 R09: fffffbfff733d83c
[  159.478733][  T227] R10: ffffffffb99ec1e7 R11: ffff88800bdb8040 R12: 0000000000000000
[  159.479041][  T227] R13: ffff888002052128 R14: ffff888002052008 R15: ffff888002052000
[  159.479373][  T227] FS:  00007ff13fbbe740(0000) GS:ffff88802f700000(0000) knlGS:0000000000000000
[  159.479723][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  159.479984][  T227] CR2: 00007f70dac4a5a0 CR3: 00000000052d8002 CR4: 0000000000772ef0
[  159.480396][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  159.480699][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  159.481008][  T227] PKRU: 55555554
[  159.481183][  T227] Call Trace:
[  159.481347][  T227]  <TASK>
[ 159.481468][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 159.481685][ T227] ? __warn (kernel/panic.c:748) 
[ 159.481852][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 159.482066][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 159.482298][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 159.482469][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 159.482684][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 159.482911][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 159.483143][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 159.483412][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 159.483637][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 159.483856][ T227] register_netdevice (net/core/dev.c:11003) 
[ 159.484081][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 159.484319][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 159.484552][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 159.484823][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 159.485120][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 159.485393][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 159.485617][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 159.485840][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 159.486116][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 159.486331][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 159.486546][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 159.486768][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 159.486985][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 159.487169][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 159.487386][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 159.487609][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 159.487836][ T227] ksys_write (fs/read_write.c:731) 
[ 159.488005][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 159.488239][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 159.488458][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  159.488720][  T227] RIP: 0033:0x7ff13fcffb77
[ 159.488940][ T227] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  159.489698][  T227] RSP: 002b:00007fff288abdc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  159.490015][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff13fcffb77
[  159.490336][  T227] RDX: 0000000000000002 RSI: 000055b34a51a130 RDI: 0000000000000001
[  159.490642][  T227] RBP: 000055b34a51a130 R08: 0000000000000000 R09: 00007ff13fd724e0
[  159.490953][  T227] R10: 00007ff13fd723e0 R11: 0000000000000246 R12: 0000000000000002
[  159.491274][  T227] R13: 00007ff13fdbb760 R14: 0000000000000002 R15: 00007ff13fdb69c0
| [  161.083207][  T227] ------------[ cut here ]------------
| [ 161.083519][ T227] WARNING: CPU: 3 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  161.083917][  T227] Modules linked in: netdevsim
| [  161.085128][  T227] Tainted: [W]=WARN
[  161.085283][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 161.085529][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 161.085780][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  161.086468][  T227] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  161.086721][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  161.087016][  T227] RDX: 0000000000000000 RSI: ffff88800a44ac98 RDI: ffff88800bdb8b28
[  161.087313][  T227] RBP: ffffffffbbb23440 R08: 0000000000000000 R09: fffffbfff733d83c
[  161.087604][  T227] R10: ffffffffb99ec1e7 R11: ffff88800bdb8040 R12: 0000000000000000
[  161.087914][  T227] R13: ffff88800a44a128 R14: ffff88800a44a008 R15: ffff88800a44a000
[  161.088215][  T227] FS:  00007ff13fbbe740(0000) GS:ffff88802f780000(0000) knlGS:0000000000000000
[  161.088551][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  161.088799][  T227] CR2: 00007ff13fcb7890 CR3: 00000000052d8003 CR4: 0000000000772ef0
[  161.089111][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  161.089506][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  161.089799][  T227] PKRU: 55555554
[  161.089949][  T227] Call Trace:
[  161.090112][  T227]  <TASK>
[ 161.090217][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 161.090416][ T227] ? __warn (kernel/panic.c:748) 
[ 161.090575][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 161.090775][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 161.090983][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 161.091150][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 161.091345][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 161.091555][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 161.091763][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 161.092012][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 161.092227][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 161.092431][ T227] register_netdevice (net/core/dev.c:11003) 
[ 161.092634][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 161.092843][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 161.093056][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 161.093326][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 161.093602][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 161.093858][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 161.094059][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 161.094276][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 161.094528][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 161.094725][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 161.094929][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 161.095143][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 161.095347][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 161.095507][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 161.095707][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 161.095911][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 161.096135][ T227] ksys_write (fs/read_write.c:731) 
[ 161.096285][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 161.096499][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 161.096691][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  161.096925][  T227] RIP: 0033:0x7ff13fcffb77
[ 161.097133][ T227] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  161.097789][  T227] RSP: 002b:00007fff288abdc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  161.098074][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff13fcffb77
[  161.098375][  T227] RDX: 0000000000000002 RSI: 000055b34a51a130 RDI: 0000000000000001
[  161.098653][  T227] RBP: 000055b34a51a130 R08: 0000000000000000 R09: 00007ff13fd724e0
[  161.098928][  T227] R10: 00007ff13fd723e0 R11: 0000000000000246 R12: 0000000000000002
[  161.099227][  T227] R13: 00007ff13fdbb760 R14: 0000000000000002 R15: 00007ff13fdb69c0
| [  162.664989][  T227] ------------[ cut here ]------------
| [ 162.665309][ T227] WARNING: CPU: 1 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  162.665714][  T227] Modules linked in: netdevsim
| [  162.666943][  T227] Tainted: [W]=WARN
[  162.667108][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 162.667356][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 162.667619][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  162.668318][  T227] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  162.668572][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  162.668867][  T227] RDX: 0000000000000000 RSI: ffff88800a4a2c98 RDI: ffff88800bdb8b28
[  162.669180][  T227] RBP: ffffffffbbb23440 R08: 0000000000000000 R09: fffffbfff733d83c
[  162.669480][  T227] R10: ffffffffb99ec1e7 R11: ffff88800bdb8040 R12: 0000000000000000
[  162.669777][  T227] R13: ffff88800a4a2128 R14: ffff88800a4a2008 R15: ffff88800a4a2000
[  162.670074][  T227] FS:  00007ff13fbbe740(0000) GS:ffff88802f680000(0000) knlGS:0000000000000000
[  162.670425][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  162.670676][  T227] CR2: 000055b34a4fc258 CR3: 00000000052d8001 CR4: 0000000000772ef0
[  162.670972][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  162.671279][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  162.671578][  T227] PKRU: 55555554
[  162.671729][  T227] Call Trace:
[  162.671881][  T227]  <TASK>
[ 162.671984][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 162.672194][ T227] ? __warn (kernel/panic.c:748) 
[ 162.672350][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 162.672554][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 162.672852][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 162.673010][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 162.673220][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 162.673437][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 162.673647][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 162.673927][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 162.674151][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 162.674358][ T227] register_netdevice (net/core/dev.c:11003) 
[ 162.674567][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 162.674779][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 162.675014][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 162.675282][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 162.675563][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 162.675821][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 162.676025][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 162.676259][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 162.676513][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 162.676709][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 162.676910][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 162.677120][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 162.677322][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 162.677482][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 162.677685][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 162.677896][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 162.678114][ T227] ksys_write (fs/read_write.c:731) 
[ 162.678266][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 162.678476][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 162.678676][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  162.678919][  T227] RIP: 0033:0x7ff13fcffb77
[ 162.679135][ T227] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  162.679833][  T227] RSP: 002b:00007fff288abdc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  162.680144][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff13fcffb77
[  162.680441][  T227] RDX: 0000000000000002 RSI: 000055b34a51a130 RDI: 0000000000000001
[  162.680738][  T227] RBP: 000055b34a51a130 R08: 0000000000000000 R09: 00007ff13fd724e0
[  162.681029][  T227] R10: 00007ff13fd723e0 R11: 0000000000000246 R12: 0000000000000002
[  162.681347][  T227] R13: 00007ff13fdbb760 R14: 0000000000000002 R15: 00007ff13fdb69c0
| [  164.264798][  T227] ------------[ cut here ]------------
| [ 164.265234][ T227] WARNING: CPU: 3 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  164.265639][  T227] Modules linked in: netdevsim
| [  164.266250][  T227] Tainted: [W]=WARN
[  164.266401][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 164.266645][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 164.266908][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  164.267618][  T227] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  164.267870][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  164.268178][  T227] RDX: 0000000000000000 RSI: ffff888009822c98 RDI: ffff88800bdb8b28
[  164.268474][  T227] RBP: ffffffffbbb23440 R08: 0000000000000000 R09: fffffbfff733d83c
[  164.268769][  T227] R10: ffffffffb99ec1e7 R11: ffff88800bdb8040 R12: 0000000000000000
[  164.269073][  T227] R13: ffff888009822128 R14: ffff888009822008 R15: ffff888009822000
[  164.269445][  T227] FS:  00007ff13fbbe740(0000) GS:ffff88802f780000(0000) knlGS:0000000000000000
[  164.269793][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  164.270051][  T227] CR2: 00007f0e99eff000 CR3: 00000000052d8006 CR4: 0000000000772ef0
[  164.270361][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  164.270660][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  164.271113][  T227] PKRU: 55555554
[  164.271270][  T227] Call Trace:
[  164.271421][  T227]  <TASK>
[ 164.271525][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 164.271725][ T227] ? __warn (kernel/panic.c:748) 
[ 164.271879][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 164.272083][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 164.272300][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 164.272456][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 164.272659][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 164.272874][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 164.273078][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 164.273342][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 164.273549][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 164.273753][ T227] register_netdevice (net/core/dev.c:11003) 
[ 164.273957][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 164.274178][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 164.274396][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 164.274662][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 164.274922][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 164.275185][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 164.275377][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 164.275586][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 164.275827][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 164.276016][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 164.276212][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 164.276407][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 164.276601][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 164.276753][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 164.276949][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 164.277158][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 164.277356][ T227] ksys_write (fs/read_write.c:731) 
[ 164.277501][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 164.277701][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 164.277890][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  164.278128][  T227] RIP: 0033:0x7ff13fcffb77
[ 164.278323][ T227] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  164.278978][  T227] RSP: 002b:00007fff288abdc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  164.279296][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff13fcffb77
[  164.279591][  T227] RDX: 0000000000000002 RSI: 000055b34a51a130 RDI: 0000000000000001
[  164.279881][  T227] RBP: 000055b34a51a130 R08: 0000000000000000 R09: 00007ff13fd724e0
[  164.280181][  T227] R10: 00007ff13fd723e0 R11: 0000000000000246 R12: 0000000000000002
[  164.280471][  T227] R13: 00007ff13fdbb760 R14: 0000000000000002 R15: 00007ff13fdb69c0
| [  165.843342][  T227] ------------[ cut here ]------------
| [ 165.843717][ T227] WARNING: CPU: 0 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  165.844126][  T227] Modules linked in: netdevsim
| [  165.844726][  T227] Tainted: [W]=WARN
[  165.844879][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 165.845228][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 165.845485][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  165.846181][  T227] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  165.846434][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  165.846732][  T227] RDX: 0000000000000000 RSI: ffff88800b0e2c98 RDI: ffff88800bdb8b28
[  165.847027][  T227] RBP: ffffffffbbb23440 R08: 0000000000000000 R09: fffffbfff733d83c
[  165.847334][  T227] R10: ffffffffb99ec1e7 R11: ffff88800bdb8040 R12: 0000000000000000
[  165.847633][  T227] R13: ffff88800b0e2128 R14: ffff88800b0e2008 R15: ffff88800b0e2000
[  165.847931][  T227] FS:  00007ff13fbbe740(0000) GS:ffff88802f600000(0000) knlGS:0000000000000000
[  165.848285][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  165.848537][  T227] CR2: 00007ff13fcb7890 CR3: 00000000052d8004 CR4: 0000000000772ef0
[  165.848832][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  165.849146][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  165.849448][  T227] PKRU: 55555554
[  165.849600][  T227] Call Trace:
[  165.849750][  T227]  <TASK>
[ 165.849857][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 165.850060][ T227] ? __warn (kernel/panic.c:748) 
[ 165.850225][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 165.850424][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 165.850631][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 165.850790][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 165.850991][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 165.851220][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 165.851427][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 165.851680][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 165.851885][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 165.852102][ T227] register_netdevice (net/core/dev.c:11003) 
[ 165.852310][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 165.852525][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 165.852745][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 165.853009][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 165.853295][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 165.853553][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 165.853755][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 165.853967][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 165.854235][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 165.854433][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 165.854634][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 165.854839][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 165.855047][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 165.855227][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 165.855432][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 165.855643][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 165.855853][ T227] ksys_write (fs/read_write.c:731) 
[ 165.856006][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 165.856232][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 165.856436][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  165.856684][  T227] RIP: 0033:0x7ff13fcffb77
[ 165.856890][ T227] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  165.857594][  T227] RSP: 002b:00007fff288abdc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  165.857895][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff13fcffb77
[  165.858205][  T227] RDX: 0000000000000002 RSI: 000055b34a51a130 RDI: 0000000000000001
[  165.858504][  T227] RBP: 000055b34a51a130 R08: 0000000000000000 R09: 00007ff13fd724e0
[  165.858796][  T227] R10: 00007ff13fd723e0 R11: 0000000000000246 R12: 0000000000000002
[  165.859104][  T227] R13: 00007ff13fdbb760 R14: 0000000000000002 R15: 00007ff13fdb69c0
| [  167.427746][  T227] ------------[ cut here ]------------
| [ 167.428054][ T227] WARNING: CPU: 0 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  167.428481][  T227] Modules linked in: netdevsim
| [  167.429133][  T227] Tainted: [W]=WARN
[  167.429294][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 167.429548][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 167.429811][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  167.430553][  T227] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  167.430818][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  167.431143][  T227] RDX: 0000000000000000 RSI: ffff88800da3ac98 RDI: ffff88800bdb8b28
[  167.431453][  T227] RBP: ffffffffbbb23440 R08: 0000000000000000 R09: fffffbfff733d83c
[  167.431761][  T227] R10: ffffffffb99ec1e7 R11: ffff88800bdb8040 R12: 0000000000000000
[  167.432089][  T227] R13: ffff88800da3a128 R14: ffff88800da3a008 R15: ffff88800da3a000
[  167.432429][  T227] FS:  00007ff13fbbe740(0000) GS:ffff88802f600000(0000) knlGS:0000000000000000
[  167.432890][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  167.433183][  T227] CR2: 000055b34a3b5408 CR3: 00000000052d8004 CR4: 0000000000772ef0
[  167.433495][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  167.433804][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  167.434136][  T227] PKRU: 55555554
[  167.434304][  T227] Call Trace:
[  167.434461][  T227]  <TASK>
[ 167.434590][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 167.434806][ T227] ? __warn (kernel/panic.c:748) 
[ 167.434969][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 167.435200][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 167.435420][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 167.435581][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 167.435791][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 167.436011][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 167.436242][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 167.436513][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 167.436727][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 167.436942][ T227] register_netdevice (net/core/dev.c:11003) 
[ 167.437171][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 167.437394][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 167.437626][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 167.437896][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 167.438203][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 167.438477][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 167.438684][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 167.438904][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 167.439231][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 167.439442][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 167.439650][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 167.439862][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 167.440075][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 167.440269][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 167.440487][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 167.440703][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 167.440927][ T227] ksys_write (fs/read_write.c:731) 
[ 167.441116][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 167.441328][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 167.441541][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  167.441785][  T227] RIP: 0033:0x7ff13fcffb77
[ 167.441991][ T227] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  167.442710][  T227] RSP: 002b:00007fff288abdc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  167.443011][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff13fcffb77
[  167.443328][  T227] RDX: 0000000000000002 RSI: 000055b34a51a130 RDI: 0000000000000001
[  167.443636][  T227] RBP: 000055b34a51a130 R08: 0000000000000000 R09: 00007ff13fd724e0
[  167.443942][  T227] R10: 00007ff13fd723e0 R11: 0000000000000246 R12: 0000000000000002
[  167.444271][  T227] R13: 00007ff13fdbb760 R14: 0000000000000002 R15: 00007ff13fdb69c0
| [  169.044779][  T227] ------------[ cut here ]------------
| [ 169.045234][ T227] WARNING: CPU: 2 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  169.045659][  T227] Modules linked in: netdevsim
| [  169.046337][  T227] Tainted: [W]=WARN
[  169.046511][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 169.046783][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 169.047072][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  169.047816][  T227] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  169.048103][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  169.048428][  T227] RDX: 0000000000000000 RSI: ffff888002052c98 RDI: ffff88800bdb8b28
[  169.048881][  T227] RBP: ffffffffbbb23440 R08: 0000000000000000 R09: fffffbfff733d83c
[  169.049253][  T227] R10: ffffffffb99ec1e7 R11: ffff88800bdb8040 R12: 0000000000000000
[  169.049587][  T227] R13: ffff888002052128 R14: ffff888002052008 R15: ffff888002052000
[  169.049922][  T227] FS:  00007ff13fbbe740(0000) GS:ffff88802f700000(0000) knlGS:0000000000000000
[  169.050325][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  169.050624][  T227] CR2: 000055b34a518fe8 CR3: 00000000052d8005 CR4: 0000000000772ef0
[  169.050957][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  169.051305][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  169.051639][  T227] PKRU: 55555554
[  169.051817][  T227] Call Trace:
[  169.051995][  T227]  <TASK>
[ 169.052137][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 169.052378][ T227] ? __warn (kernel/panic.c:748) 
[ 169.052571][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 169.052817][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 169.053054][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 169.053242][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 169.053465][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 169.053709][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 169.053951][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 169.054248][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 169.054481][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 169.054716][ T227] register_netdevice (net/core/dev.c:11003) 
[ 169.054951][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 169.055200][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 169.055447][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 169.055730][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 169.056059][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 169.056362][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 169.056590][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 169.056825][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 169.057152][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 169.057375][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 169.057627][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 169.057849][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 169.058076][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 169.058300][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 169.058544][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 169.058770][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 169.058993][ T227] ksys_write (fs/read_write.c:731) 
[ 169.059184][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 169.059425][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 169.059644][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  169.059928][  T227] RIP: 0033:0x7ff13fcffb77
[ 169.060159][ T227] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  169.060865][  T227] RSP: 002b:00007fff288abdc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  169.061191][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff13fcffb77
[  169.061508][  T227] RDX: 0000000000000002 RSI: 000055b34a51a130 RDI: 0000000000000001
[  169.061823][  T227] RBP: 000055b34a51a130 R08: 0000000000000000 R09: 00007ff13fd724e0
[  169.062150][  T227] R10: 00007ff13fd723e0 R11: 0000000000000246 R12: 0000000000000002
[  169.062458][  T227] R13: 00007ff13fdbb760 R14: 0000000000000002 R15: 00007ff13fdb69c0
| [  170.747776][  T227] ------------[ cut here ]------------
| [ 170.748226][ T227] WARNING: CPU: 2 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  170.748681][  T227] Modules linked in: netdevsim
| [  170.749375][  T227] Tainted: [W]=WARN
[  170.749562][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 170.749838][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 170.750136][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  170.750892][  T227] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  170.751182][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  170.751519][  T227] RDX: 0000000000000000 RSI: ffff88800a44ac98 RDI: ffff88800bdb8b28
[  170.751861][  T227] RBP: ffffffffbbb23440 R08: 0000000000000000 R09: fffffbfff733d83c
[  170.752203][  T227] R10: ffffffffb99ec1e7 R11: ffff88800bdb8040 R12: 0000000000000000
[  170.752531][  T227] R13: ffff88800a44a128 R14: ffff88800a44a008 R15: ffff88800a44a000
[  170.752982][  T227] FS:  00007ff13fbbe740(0000) GS:ffff88802f700000(0000) knlGS:0000000000000000
[  170.753377][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  170.753722][  T227] CR2: 00007f70dac4a5a0 CR3: 00000000052d8005 CR4: 0000000000772ef0
[  170.754241][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  170.754591][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  170.754940][  T227] PKRU: 55555554
[  170.755131][  T227] Call Trace:
[  170.755304][  T227]  <TASK>
[ 170.755437][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 170.755681][ T227] ? __warn (kernel/panic.c:748) 
[ 170.755858][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 170.756088][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 170.756333][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 170.756510][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 170.756740][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 170.756982][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 170.757260][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 170.757548][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 170.757787][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 170.758023][ T227] register_netdevice (net/core/dev.c:11003) 
[ 170.758263][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 170.758505][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 170.758756][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 170.759047][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 170.759372][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 170.759708][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 170.759933][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 170.760180][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 170.760460][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 170.760687][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 170.760910][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 170.761142][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 170.761366][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 170.761545][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 170.761772][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 170.761994][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 170.762228][ T227] ksys_write (fs/read_write.c:731) 
[ 170.762395][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 170.762676][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 170.762944][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  170.763222][  T227] RIP: 0033:0x7ff13fcffb77
[ 170.763441][ T227] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  170.764170][  T227] RSP: 002b:00007fff288abdc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  170.764494][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007ff13fcffb77
[  170.764820][  T227] RDX: 0000000000000002 RSI: 000055b34a51a130 RDI: 0000000000000001
[  170.765144][  T227] RBP: 000055b34a51a130 R08: 0000000000000000 R09: 00007ff13fd724e0
[  170.765454][  T227] R10: 00007ff13fd723e0 R11: 0000000000000246 R12: 0000000000000002


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