======================================
| 0
| xx__-> [    9.055222][  T227] ------------[ cut here ]------------
| [ 9.055604][ 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) 
| [    9.056074][  T227] Modules linked in: netdevsim
[    9.056755][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.057057][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.057338][ 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
[    9.058063][  T227] RSP: 0018:ffffc90000aa7520 EFLAGS: 00010246
[    9.058338][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.058654][  T227] RDX: 0000000000000000 RSI: ffff88800be52c98 RDI: ffff888008e50b78
[    9.058973][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[    9.059302][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[    9.059617][  T227] R13: ffff88800be52128 R14: ffff88800be52008 R15: ffff88800be52000
[    9.059938][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.060331][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.060605][  T227] CR2: 000055e25e724328 CR3: 0000000008b36003 CR4: 0000000000772ef0
[    9.060928][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.061260][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.061577][  T227] PKRU: 55555554
[    9.061748][  T227] Call Trace:
[    9.061918][  T227]  <TASK>
[ 9.062049][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.062273][ T227] ? __warn (kernel/panic.c:748) 
[ 9.062442][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.062662][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.062885][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.063068][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.063284][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.063513][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.063741][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.064012][ 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) 
[ 9.064251][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.064471][ T227] register_netdevice (net/core/dev.c:11003) 
[ 9.064697][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.064922][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.065169][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.065442][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.065614][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.065897][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.066180][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.066453][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.066681][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.066956][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.067190][ T227] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 9.067359][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.067585][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.067807][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.068039][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 9.068255][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.068474][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.068733][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.068955][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.069182][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.069401][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.069614][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.069834][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 9.070062][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.070275][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.070496][ T227] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 9.070718][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 9.070938][ T227] device_add (drivers/base/core.c:3672) 
[ 9.071167][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.071382][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.071608][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.071881][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.072168][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.072385][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.072605][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.072821][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.073054][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.073234][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.073455][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.073672][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.073897][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.074132][ T227] ksys_write (fs/read_write.c:731) 
[ 9.074306][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.074516][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.074743][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.074959][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.075231][  T227] RIP: 0033:0x7f48e1801b77
[ 9.075458][ 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
[    9.076180][  T227] RSP: 002b:00007fff1d4d94f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.076500][  T227] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f48e1801b77
[    9.076819][  T227] RDX: 0000000000000003 RSI: 000055e25e723320 RDI: 0000000000000001
[    9.077152][  T227] RBP: 000055e25e723320 R08: 0000000000000003 R09: 0000000000000077
[    9.077467][  T227] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000003
[    9.077780][  T227] R13: 00007f48e18bd760 R14: 0000000000000003 R15: 00007f48e18b89c0
| [   13.877000][  T227] ------------[ cut here ]------------
| [ 13.877308][ 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) 
| [   13.877678][  T227] Modules linked in: netdevsim [last unloaded: ip6_udp_tunnel]
| [   13.878347][  T227] Tainted: [W]=WARN
[   13.878505][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 13.878735][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 13.878975][ 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
[   13.879625][  T227] RSP: 0018:ffffc90000aa7910 EFLAGS: 00010246
[   13.879863][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   13.880150][  T227] RDX: 0000000000000000 RSI: ffff88800b9e2c98 RDI: ffff888008e50b28
[   13.880425][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[   13.880701][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[   13.880978][  T227] R13: ffff88800b9e2128 R14: ffff88800b9e2008 R15: ffff88800b9e2000
[   13.881262][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   13.881581][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   13.881818][  T227] CR2: 00007f06d3bca1b4 CR3: 0000000008b36005 CR4: 0000000000772ef0
[   13.882102][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   13.882380][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   13.882748][  T227] PKRU: 55555554
[   13.882891][  T227] Call Trace:
[   13.883084][  T227]  <TASK>
[ 13.883181][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 13.883369][ T227] ? __warn (kernel/panic.c:748) 
[ 13.883513][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 13.883702][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 13.883892][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 13.884048][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 13.884233][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 13.884436][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 13.884631][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 13.884864][ 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) 
[ 13.885065][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 13.885257][ T227] register_netdevice (net/core/dev.c:11003) 
[ 13.885478][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 13.885675][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 13.885883][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 13.886136][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 13.886395][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 13.886637][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 13.886825][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 13.887041][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 13.887288][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 13.887474][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 13.887660][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 13.887848][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 13.888051][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 13.888201][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 13.888390][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 13.888587][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 13.888833][ T227] ksys_write (fs/read_write.c:731) 
[ 13.888976][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 13.889181][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 13.889368][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   13.889596][  T227] RIP: 0033:0x7f48e1801b77
[ 13.889787][ 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
[   13.890430][  T227] RSP: 002b:00007fff1d4d93f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   13.890703][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f48e1801b77
[   13.890975][  T227] RDX: 0000000000000002 RSI: 000055e25e723320 RDI: 0000000000000001
[   13.891257][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[   13.891530][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000002
[   13.891802][  T227] R13: 00007f48e18bd760 R14: 0000000000000002 R15: 00007f48e18b89c0
| [   18.917203][  T227] ------------[ cut here ]------------
| [ 18.917519][ 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) 
| [   18.917926][  T227] Modules linked in: netdevsim [last unloaded: netdevsim]
| [   18.918637][  T227] Tainted: [W]=WARN
[   18.918807][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 18.919067][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 18.919323][ 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
[   18.920011][  T227] RSP: 0018:ffffc90000aa7520 EFLAGS: 00010246
[   18.920278][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   18.920574][  T227] RDX: 0000000000000000 RSI: ffff88800af0ac98 RDI: ffff888008e50b78
[   18.920871][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[   18.921177][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[   18.921475][  T227] R13: ffff88800af0a128 R14: ffff88800af0a008 R15: ffff88800af0a000
[   18.921774][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   18.922127][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   18.922381][  T227] CR2: 00007f48e1874733 CR3: 0000000008b36001 CR4: 0000000000772ef0
[   18.922681][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   18.923073][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   18.923370][  T227] PKRU: 55555554
[   18.923522][  T227] Call Trace:
[   18.923675][  T227]  <TASK>
[ 18.923780][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 18.923981][ T227] ? __warn (kernel/panic.c:748) 
[ 18.924149][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 18.924353][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 18.924563][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 18.924717][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 18.924927][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 18.925164][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 18.925378][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 18.925637][ 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) 
[ 18.925848][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 18.926065][ T227] register_netdevice (net/core/dev.c:11003) 
[ 18.926273][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 18.926485][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 18.926712][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 18.926977][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 18.927147][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 18.927411][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 18.927673][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 18.927933][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 18.928153][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 18.928411][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 18.928620][ T227] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 18.928775][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 18.928985][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 18.929201][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 18.929407][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 18.929612][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 18.929818][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 18.930079][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 18.930282][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 18.930484][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 18.930686][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 18.930887][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 18.931103][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 18.931308][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 18.931512][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 18.931715][ T227] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 18.931927][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 18.932142][ T227] device_add (drivers/base/core.c:3672) 
[ 18.932350][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 18.932550][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 18.932763][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 18.933037][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 18.933301][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 18.933500][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 18.933709][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 18.933908][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 18.934126][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 18.934289][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 18.934498][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 18.934702][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 18.934913][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 18.935143][ T227] ksys_write (fs/read_write.c:731) 
[ 18.935300][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 18.935500][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 18.935713][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 18.935918][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   18.936181][  T227] RIP: 0033:0x7f48e1801b77
[ 18.936390][ 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
[   18.937095][  T227] RSP: 002b:00007fff1d4dcc98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   18.937402][  T227] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f48e1801b77
[   18.937698][  T227] RDX: 0000000000000003 RSI: 000055e25e723320 RDI: 0000000000000001
[   18.937995][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[   18.938299][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000003
[   18.938597][  T227] R13: 00007f48e18bd760 R14: 0000000000000003 R15: 00007f48e18b89c0
| [   18.971303][  T227] ------------[ cut here ]------------
| [ 18.971645][ 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) 
| [   18.972017][  T227] Modules linked in: netdevsim [last unloaded: netdevsim]
| [   18.972640][  T227] Tainted: [W]=WARN
[   18.972778][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 18.973005][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 18.973246][ 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
[   18.973876][  T227] RSP: 0018:ffffc90000aa7910 EFLAGS: 00010246
[   18.974113][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   18.974384][  T227] RDX: 0000000000000000 RSI: ffff88800ad42c98 RDI: ffff888008e50b28
[   18.974662][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[   18.974928][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[   18.975205][  T227] R13: ffff88800ad42128 R14: ffff88800ad42008 R15: ffff88800ad42000
[   18.975556][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   18.975873][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   18.976114][  T227] CR2: 00007f48e1874733 CR3: 0000000008b36001 CR4: 0000000000772ef0
[   18.976389][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   18.976666][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   18.976951][  T227] PKRU: 55555554
[   18.977103][  T227] Call Trace:
[   18.977244][  T227]  <TASK>
[ 18.977341][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 18.977524][ T227] ? __warn (kernel/panic.c:748) 
[ 18.977668][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 18.977854][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 18.978050][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 18.978190][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 18.978518][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 18.978715][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 18.978906][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 18.979145][ 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) 
[ 18.979442][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 18.979628][ T227] register_netdevice (net/core/dev.c:11003) 
[ 18.979816][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 18.980043][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 18.980358][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 18.980594][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 18.980844][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 18.981101][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 18.981285][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 18.981486][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 18.981724][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 18.982014][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 18.982205][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 18.982393][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 18.982583][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 18.982835][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 18.983020][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 18.983220][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 18.983411][ T227] ksys_write (fs/read_write.c:731) 
[ 18.983551][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 18.983853][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 18.984054][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   18.984282][  T227] RIP: 0033:0x7f48e1801b77
[ 18.984580][ 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
[   18.985226][  T227] RSP: 002b:00007fff1d4dcc98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   18.985512][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f48e1801b77
[   18.985782][  T227] RDX: 0000000000000002 RSI: 000055e25e723320 RDI: 0000000000000001
[   18.986060][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[   18.986330][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000002
[   18.986604][  T227] R13: 00007f48e18bd760 R14: 0000000000000002 R15: 00007f48e18b89c0
| [   25.532809][  T227] ------------[ cut here ]------------
| [ 25.533389][ 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) 
| [   25.534050][  T227] Modules linked in: netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   25.535350][  T227] Tainted: [W]=WARN
[   25.535623][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 25.535992][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.536441][ 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
[   25.537357][  T227] RSP: 0018:ffffc90000aa7520 EFLAGS: 00010246
[   25.537647][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   25.537988][  T227] RDX: 0000000000000000 RSI: ffff88800ae3ac98 RDI: ffff888008e50b78
[   25.538349][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[   25.538694][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[   25.539050][  T227] R13: ffff88800ae3a128 R14: ffff88800ae3a008 R15: ffff88800ae3a000
[   25.539389][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   25.539779][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.540070][  T227] CR2: 000055eb7e6b45d0 CR3: 0000000008b36005 CR4: 0000000000772ef0
[   25.540681][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.541085][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.541421][  T227] PKRU: 55555554
[   25.541595][  T227] Call Trace:
[   25.541767][  T227]  <TASK>
[ 25.541884][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.542125][ T227] ? __warn (kernel/panic.c:748) 
[ 25.542302][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.542529][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 25.542773][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 25.542943][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 25.543184][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 25.543420][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.543673][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 25.543968][ 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) 
[ 25.544217][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 25.544458][ T227] register_netdevice (net/core/dev.c:11003) 
[ 25.544698][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 25.544932][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 25.545190][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 25.545484][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 25.545660][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 25.545964][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 25.546263][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 25.546546][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 25.546794][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 25.547100][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 25.547330][ T227] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 25.547500][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 25.547740][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 25.547975][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 25.548214][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 25.548444][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 25.548672][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 25.548943][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 25.549175][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 25.549399][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 25.549617][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 25.549834][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 25.550071][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 25.550288][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 25.550504][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 25.550723][ T227] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 25.550957][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 25.551196][ T227] device_add (drivers/base/core.c:3672) 
[ 25.551422][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 25.551641][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 25.551872][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 25.552165][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 25.552450][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 25.552668][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 25.552894][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 25.553124][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 25.553427][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 25.553627][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 25.553858][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 25.554097][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 25.554336][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 25.554567][ T227] ksys_write (fs/read_write.c:731) 
[ 25.554738][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 25.554963][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 25.555217][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 25.555449][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.555726][  T227] RIP: 0033:0x7f48e1801b77
[ 25.555960][ 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
[   25.556751][  T227] RSP: 002b:00007fff1d4dcc98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   25.557114][  T227] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f48e1801b77
[   25.557446][  T227] RDX: 0000000000000003 RSI: 000055e25e723320 RDI: 0000000000000001
[   25.557767][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[   25.558108][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000003
[   25.558435][  T227] R13: 00007f48e18bd760 R14: 0000000000000003 R15: 00007f48e18b89c0
| [   25.615299][  T227] ------------[ cut here ]------------
| [ 25.615676][ 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) 
| [   25.616101][  T227] Modules linked in: netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   25.616897][  T227] Tainted: [W]=WARN
[   25.617056][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 25.617368][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.617641][ 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
[   25.618382][  T227] RSP: 0018:ffffc90000aa7910 EFLAGS: 00010246
[   25.618635][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   25.618929][  T227] RDX: 0000000000000000 RSI: ffff888009a92c98 RDI: ffff888008e50b28
[   25.619238][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[   25.619536][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[   25.619833][  T227] R13: ffff888009a92128 R14: ffff888009a92008 R15: ffff888009a92000
[   25.620148][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   25.620499][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.620954][  T227] CR2: 00007fb0adbe2a7b CR3: 0000000008b36001 CR4: 0000000000772ef0
[   25.621267][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.621567][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.621865][  T227] PKRU: 55555554
[   25.622045][  T227] Call Trace:
[   25.622202][  T227]  <TASK>
[ 25.622309][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.622517][ T227] ? __warn (kernel/panic.c:748) 
[ 25.622672][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.622878][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 25.623100][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 25.623260][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 25.623461][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 25.623690][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.623902][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 25.624170][ 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) 
[ 25.624380][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 25.624589][ T227] register_netdevice (net/core/dev.c:11003) 
[ 25.624798][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 25.625023][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 25.625268][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 25.625534][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 25.625815][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 25.626096][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 25.626306][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 25.626526][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 25.626793][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 25.626999][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 25.627219][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 25.627425][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 25.627632][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 25.627794][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 25.628002][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 25.628224][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 25.628437][ T227] ksys_write (fs/read_write.c:731) 
[ 25.628591][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 25.628825][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 25.629078][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.629327][  T227] RIP: 0033:0x7f48e1801b77
[ 25.629539][ 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
[   25.630248][  T227] RSP: 002b:00007fff1d4da6c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   25.630560][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f48e1801b77
[   25.630855][  T227] RDX: 0000000000000002 RSI: 000055e25e723320 RDI: 0000000000000001
[   25.631165][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[   25.631463][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000002
[   25.631757][  T227] R13: 00007f48e18bd760 R14: 0000000000000002 R15: 00007f48e18b89c0
| [   37.457512][  T227] ------------[ cut here ]------------
| [ 37.457742][ 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) 
| [   37.458386][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   37.459156][  T227] Tainted: [W]=WARN
[   37.459303][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 37.459533][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 37.459777][ 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
[   37.460432][  T227] RSP: 0018:ffffc90000aa7910 EFLAGS: 00010246
[   37.460670][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   37.460953][  T227] RDX: 0000000000000000 RSI: ffff88800aeaac98 RDI: ffff888008e50b28
[   37.461246][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[   37.461531][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[   37.461810][  T227] R13: ffff88800aeaa128 R14: ffff88800aeaa008 R15: ffff88800aeaa000
[   37.462095][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   37.462427][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   37.462660][  T227] CR2: 00007fff1d4d9eb0 CR3: 0000000008b36002 CR4: 0000000000772ef0
[   37.462934][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   37.463214][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   37.463494][  T227] PKRU: 55555554
[   37.463633][  T227] Call Trace:
[   37.463773][  T227]  <TASK>
[ 37.463871][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 37.464074][ T227] ? __warn (kernel/panic.c:748) 
[ 37.464221][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 37.464406][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 37.464612][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 37.464756][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 37.464942][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 37.465147][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 37.465361][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 37.465607][ 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) 
[ 37.465792][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 37.465995][ T227] register_netdevice (net/core/dev.c:11003) 
[ 37.466199][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 37.466396][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 37.466600][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 37.466865][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 37.467133][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 37.467381][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 37.467571][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 37.467779][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 37.468019][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 37.468214][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 37.468440][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 37.468633][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 37.468824][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 37.468975][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 37.469186][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 37.469385][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 37.469581][ T227] ksys_write (fs/read_write.c:731) 
[ 37.469725][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 37.469941][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 37.470139][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   37.470374][  T227] RIP: 0033:0x7f48e1801b77
[ 37.470564][ 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
[   37.471238][  T227] RSP: 002b:00007fff1d4da6c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   37.471527][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f48e1801b77
[   37.471807][  T227] RDX: 0000000000000002 RSI: 000055e25e723320 RDI: 0000000000000001
[   37.472088][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[   37.472380][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000002
[   37.472657][  T227] R13: 00007f48e18bd760 R14: 0000000000000002 R15: 00007f48e18b89c0
| [   50.279557][  T227] ------------[ cut here ]------------
| [ 50.280081][ 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) 
| [   50.280544][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   50.281482][  T227] Tainted: [W]=WARN
[   50.281665][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 50.281947][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 50.282263][ 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
[   50.283052][  T227] RSP: 0018:ffffc90000aa7520 EFLAGS: 00010246
[   50.283343][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   50.283686][  T227] RDX: 0000000000000000 RSI: ffff88800ad42c98 RDI: ffff888008e50b78
[   50.284074][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[   50.284414][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[   50.284753][  T227] R13: ffff88800ad42128 R14: ffff88800ad42008 R15: ffff88800ad42000
[   50.285107][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   50.285502][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   50.285822][  T227] CR2: 00007fb0ad9cba00 CR3: 0000000008b36003 CR4: 0000000000772ef0
[   50.286174][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   50.286699][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   50.287053][  T227] PKRU: 55555554
[   50.287234][  T227] Call Trace:
[   50.287416][  T227]  <TASK>
[ 50.287542][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 50.287782][ T227] ? __warn (kernel/panic.c:748) 
[ 50.287965][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 50.288212][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 50.288452][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 50.288633][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 50.288868][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 50.289126][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 50.289377][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 50.289669][ 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) 
[ 50.289910][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 50.290158][ T227] register_netdevice (net/core/dev.c:11003) 
[ 50.290397][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 50.290642][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 50.290894][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 50.291198][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 50.291383][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 50.291685][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 50.291976][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 50.292280][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 50.292527][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 50.292827][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 50.293077][ T227] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 50.293257][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 50.293497][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 50.293737][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 50.293974][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 50.294221][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 50.294461][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 50.294746][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 50.294979][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 50.295220][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 50.295453][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 50.295688][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 50.295931][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 50.296175][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 50.296404][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 50.296645][ T227] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 50.296888][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 50.297135][ T227] device_add (drivers/base/core.c:3672) 
[ 50.297372][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 50.297603][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 50.297852][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 50.298161][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 50.298460][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 50.298690][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 50.298930][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 50.299172][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 50.299418][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 50.299606][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 50.299843][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 50.300098][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 50.300341][ T227] ksys_write (fs/read_write.c:731) 
[ 50.300521][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 50.300764][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 50.300998][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   50.301315][  T227] RIP: 0033:0x7f48e1801b77
[ 50.301552][ 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
[   50.302324][  T227] RSP: 002b:00007fff1d4dcc98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   50.302667][  T227] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f48e1801b77
[   50.303007][  T227] RDX: 0000000000000003 RSI: 000055e25e723320 RDI: 0000000000000001
[   50.303360][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[   50.303698][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000003
[   50.304041][  T227] R13: 00007f48e18bd760 R14: 0000000000000003 R15: 00007f48e18b89c0
| [   50.343998][  T227] ------------[ cut here ]------------
| [ 50.344687][ 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) 
| [   50.345137][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   50.346008][  T227] Tainted: [W]=WARN
[   50.346193][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 50.346463][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 50.346747][ 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
[   50.347488][  T227] RSP: 0018:ffffc90000aa7910 EFLAGS: 00010246
[   50.347757][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   50.348080][  T227] RDX: 0000000000000000 RSI: ffff88800be52c98 RDI: ffff888008e50b28
[   50.348398][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[   50.348712][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[   50.349020][  T227] R13: ffff88800be52128 R14: ffff88800be52008 R15: ffff88800be52000
[   50.349345][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   50.349811][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   50.350090][  T227] CR2: 00007fb0adcb4e70 CR3: 0000000008b36003 CR4: 0000000000772ef0
[   50.350403][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   50.350717][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   50.351053][  T227] PKRU: 55555554
[   50.351229][  T227] Call Trace:
[   50.351399][  T227]  <TASK>
[ 50.351521][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 50.351744][ T227] ? __warn (kernel/panic.c:748) 
[ 50.351920][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 50.352156][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 50.352405][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 50.352581][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 50.352943][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 50.353272][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 50.353573][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 50.353922][ 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) 
[ 50.354258][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 50.354569][ T227] register_netdevice (net/core/dev.c:11003) 
[ 50.354986][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 50.355409][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 50.355766][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 50.356171][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 50.356472][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 50.356762][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 50.356979][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 50.357327][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 50.357595][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 50.357809][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 50.358024][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 50.358257][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 50.358472][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 50.358761][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 50.358986][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 50.359219][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 50.359450][ T227] ksys_write (fs/read_write.c:731) 
[ 50.359623][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 50.359973][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 50.360211][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   50.360481][  T227] RIP: 0033:0x7f48e1801b77
[ 50.360715][ 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
[   50.361602][  T227] RSP: 002b:00007fff1d4da6c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   50.361935][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f48e1801b77
[   50.362274][  T227] RDX: 0000000000000002 RSI: 000055e25e723320 RDI: 0000000000000001
[   50.362596][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[   50.363066][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000002
[   50.363385][  T227] R13: 00007f48e18bd760 R14: 0000000000000002 R15: 00007f48e18b89c0
| [   62.803166][  T227] ------------[ cut here ]------------
| [ 62.803414][ 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) 
| [   62.803800][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   62.804931][  T227] Tainted: [W]=WARN
[   62.805091][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 62.805331][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 62.805573][ 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
[   62.806240][  T227] RSP: 0018:ffffc90000aa7910 EFLAGS: 00010246
[   62.806485][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   62.806779][  T227] RDX: 0000000000000000 RSI: ffff88800af0ac98 RDI: ffff888008e50b28
[   62.807067][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[   62.807344][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[   62.807620][  T227] R13: ffff88800af0a128 R14: ffff88800af0a008 R15: ffff88800af0a000
[   62.807898][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   62.808230][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   62.808472][  T227] CR2: 00007fb488431000 CR3: 0000000008b36006 CR4: 0000000000772ef0
[   62.808754][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   62.809048][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   62.809331][  T227] PKRU: 55555554
[   62.809474][  T227] Call Trace:
[   62.809615][  T227]  <TASK>
[ 62.809713][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 62.809900][ T227] ? __warn (kernel/panic.c:748) 
[ 62.810065][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 62.810262][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 62.810464][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 62.810609][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 62.810804][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 62.811010][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 62.811219][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 62.811472][ 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) 
[ 62.811666][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 62.811859][ T227] register_netdevice (net/core/dev.c:11003) 
[ 62.812062][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 62.812266][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 62.812471][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 62.812724][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 62.812982][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 62.813233][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 62.813424][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 62.813621][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 62.813862][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 62.814066][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 62.814255][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 62.814447][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 62.814640][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 62.814791][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 62.814982][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 62.815192][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 62.815392][ T227] ksys_write (fs/read_write.c:731) 
[ 62.815539][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 62.815734][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 62.815923][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   62.816164][  T227] RIP: 0033:0x7f48e1801b77
[ 62.816359][ 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
[   62.817017][  T227] RSP: 002b:00007fff1d4da6c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   62.817313][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f48e1801b77
[   62.817593][  T227] RDX: 0000000000000002 RSI: 000055e25e723320 RDI: 0000000000000001
[   62.817873][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[   62.818167][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000002
[   62.818442][  T227] R13: 00007f48e18bd760 R14: 0000000000000002 R15: 00007f48e18b89c0
| [   74.722855][  T227] ------------[ cut here ]------------
| [ 74.723267][ 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) 
| [   74.723709][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   74.724632][  T227] Tainted: [W]=WARN
[   74.724806][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 74.725091][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 74.725376][ 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
[   74.726110][  T227] RSP: 0018:ffffc90000aa7520 EFLAGS: 00010246
[   74.726391][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   74.726724][  T227] RDX: 0000000000000000 RSI: ffff888004c3ac98 RDI: ffff888008e50b78
[   74.727052][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[   74.727370][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[   74.727691][  T227] R13: ffff888004c3a128 R14: ffff888004c3a008 R15: ffff888004c3a000
[   74.728014][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   74.728396][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   74.728671][  T227] CR2: 000055e25e71a648 CR3: 0000000008b36006 CR4: 0000000000772ef0
[   74.728988][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   74.729317][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   74.729741][  T227] PKRU: 55555554
[   74.729915][  T227] Call Trace:
[   74.730102][  T227]  <TASK>
[ 74.730222][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 74.730448][ T227] ? __warn (kernel/panic.c:748) 
[ 74.730625][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 74.730845][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 74.731093][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 74.731268][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 74.731515][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 74.731751][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 74.731980][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 74.732267][ 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) 
[ 74.732495][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 74.732720][ T227] register_netdevice (net/core/dev.c:11003) 
[ 74.732945][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 74.733287][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 74.733524][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 74.733801][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 74.733973][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 74.734267][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 74.734542][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 74.734826][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 74.735068][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 74.735344][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 74.735570][ T227] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 74.735740][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 74.735963][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 74.736203][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 74.736431][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 74.736665][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 74.736884][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 74.737162][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 74.737384][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 74.737601][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 74.737818][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 74.738052][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 74.738277][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 74.738502][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 74.738716][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 74.738938][ T227] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 74.739177][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 74.739399][ T227] device_add (drivers/base/core.c:3672) 
[ 74.739627][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 74.739845][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 74.740087][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 74.740364][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 74.740645][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 74.740859][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 74.741096][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 74.741322][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 74.741547][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 74.741726][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 74.741951][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 74.742189][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 74.742418][ T227] ksys_write (fs/read_write.c:731) 
[ 74.742590][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 74.742825][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 74.743060][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   74.743327][  T227] RIP: 0033:0x7f48e1801b77
[ 74.743555][ 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
[   74.744289][  T227] RSP: 002b:00007fff1d4dcc98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   74.744616][  T227] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f48e1801b77
[   74.744928][  T227] RDX: 0000000000000003 RSI: 000055e25e723320 RDI: 0000000000000001
[   74.745257][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[   74.745569][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000003
[   74.745890][  T227] R13: 00007f48e18bd760 R14: 0000000000000003 R15: 00007f48e18b89c0
| [   74.783581][  T227] ------------[ cut here ]------------
| [ 74.784059][ 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) 
| [   74.784560][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   74.785385][  T227] Tainted: [W]=WARN
[   74.785542][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 74.785788][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 74.786051][ 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
[   74.786724][  T227] RSP: 0018:ffffc90000aa7910 EFLAGS: 00010246
[   74.786975][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   74.787272][  T227] RDX: 0000000000000000 RSI: ffff88800ae2ac98 RDI: ffff888008e50b28
[   74.787563][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[   74.787854][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[   74.788151][  T227] R13: ffff88800ae2a128 R14: ffff88800ae2a008 R15: ffff88800ae2a000
[   74.788438][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   74.788780][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   74.789024][  T227] CR2: 000055e25e71a648 CR3: 0000000008b36006 CR4: 0000000000772ef0
[   74.789330][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   74.789619][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   74.789913][  T227] PKRU: 55555554
[   74.790082][  T227] Call Trace:
[   74.790236][  T227]  <TASK>
[ 74.790347][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 74.790551][ T227] ? __warn (kernel/panic.c:748) 
[ 74.790709][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 74.790910][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 74.791132][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 74.791295][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 74.791497][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 74.791711][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 74.791922][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 74.792182][ 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) 
[ 74.792390][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 74.792592][ T227] register_netdevice (net/core/dev.c:11003) 
[ 74.792802][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 74.793011][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 74.793239][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 74.793496][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 74.793767][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 74.794019][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 74.794240][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 74.794447][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 74.794840][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 74.795050][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 74.795251][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 74.795455][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 74.795660][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 74.795826][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 74.796040][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 74.796256][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 74.796583][ T227] ksys_write (fs/read_write.c:731) 
[ 74.796744][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 74.796955][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 74.797173][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   74.797417][  T227] RIP: 0033:0x7f48e1801b77
[ 74.797629][ 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
[   74.798435][  T227] RSP: 002b:00007fff1d4dbfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   74.798729][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f48e1801b77
[   74.799023][  T227] RDX: 0000000000000002 RSI: 000055e25e723320 RDI: 0000000000000001
[   74.799323][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[   74.799828][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000002
[   74.800128][  T227] R13: 00007f48e18bd760 R14: 0000000000000002 R15: 00007f48e18b89c0
| [   81.912175][  T227] ------------[ cut here ]------------
| [ 81.912460][ 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) 
| [   81.912856][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   81.913731][  T227] Tainted: [W]=WARN
[   81.913898][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 81.914153][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 81.914423][ 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
[   81.915096][  T227] RSP: 0018:ffffc90000aa7910 EFLAGS: 00010246
[   81.915358][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   81.915653][  T227] RDX: 0000000000000000 RSI: ffff88800ae3ac98 RDI: ffff888008e50b28
[   81.915950][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[   81.916252][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[   81.916558][  T227] R13: ffff88800ae3a128 R14: ffff88800ae3a008 R15: ffff88800ae3a000
[   81.916857][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   81.917200][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   81.917460][  T227] CR2: 00007f48e181ecb0 CR3: 0000000008b36001 CR4: 0000000000772ef0
[   81.917763][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   81.918065][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   81.918362][  T227] PKRU: 55555554
[   81.918518][  T227] Call Trace:
[   81.918676][  T227]  <TASK>
[ 81.918788][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 81.918997][ T227] ? __warn (kernel/panic.c:748) 
[ 81.919169][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 81.919374][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 81.919585][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 81.919744][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 81.919944][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 81.920170][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 81.920384][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 81.920642][ 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) 
[ 81.920847][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 81.921063][ T227] register_netdevice (net/core/dev.c:11003) 
[ 81.921272][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 81.921485][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 81.921701][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 81.921967][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 81.922248][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 81.922509][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 81.922712][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 81.922925][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 81.923188][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 81.923401][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 81.923603][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 81.923812][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 81.924016][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 81.924192][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 81.924398][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 81.924612][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 81.924892][ T227] ksys_write (fs/read_write.c:731) 
[ 81.925061][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 81.925275][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 81.925478][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   81.925721][  T227] RIP: 0033:0x7f48e1801b77
[ 81.925926][ 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
[   81.926610][  T227] RSP: 002b:00007fff1d4dbfb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   81.926908][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f48e1801b77
[   81.927209][  T227] RDX: 0000000000000002 RSI: 000055e25e723320 RDI: 0000000000000001
[   81.927497][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[   81.927797][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000002
[   81.928097][  T227] R13: 00007f48e18bd760 R14: 0000000000000002 R15: 00007f48e18b89c0
| [   88.862528][  T227] ------------[ cut here ]------------
| [ 88.862928][ 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) 
| [   88.863365][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   88.864229][  T227] Tainted: [W]=WARN
[   88.864386][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 88.864640][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 88.864903][ 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
[   88.865628][  T227] RSP: 0018:ffffc90000aa7520 EFLAGS: 00010246
[   88.865889][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   88.866199][  T227] RDX: 0000000000000000 RSI: ffff888009a92c98 RDI: ffff888008e50b78
[   88.866511][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[   88.866816][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[   88.867242][  T227] R13: ffff888009a92128 R14: ffff888009a92008 R15: ffff888009a92000
[   88.867550][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   88.867916][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   88.868187][  T227] CR2: 00007f48e181ecb0 CR3: 0000000008b36004 CR4: 0000000000772ef0
[   88.868498][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   88.868808][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   88.869125][  T227] PKRU: 55555554
[   88.869284][  T227] Call Trace:
[   88.869440][  T227]  <TASK>
[ 88.869547][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 88.869763][ T227] ? __warn (kernel/panic.c:748) 
[ 88.869929][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 88.870157][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 88.870373][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 88.870533][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 88.870759][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 88.870980][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 88.871219][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 88.871485][ 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) 
[ 88.871698][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 88.871906][ T227] register_netdevice (net/core/dev.c:11003) 
[ 88.872134][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 88.872354][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 88.872576][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 88.872837][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 88.872994][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 88.873272][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 88.873535][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 88.873805][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 88.874023][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 88.874293][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 88.874503][ T227] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 88.874658][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 88.874872][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 88.875108][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 88.875320][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 88.875527][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 88.875735][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 88.875986][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 88.876204][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 88.876407][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 88.876629][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 88.876833][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 88.877055][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 88.877261][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 88.877464][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 88.877671][ T227] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 88.877886][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 88.878110][ T227] device_add (drivers/base/core.c:3672) 
[ 88.878321][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 88.878525][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 88.878741][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 88.879006][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 88.879295][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 88.879499][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 88.879715][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 88.879919][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 88.880142][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 88.880304][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 88.880511][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 88.880724][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 88.880936][ T227] ksys_write (fs/read_write.c:731) 
[ 88.881103][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 88.881324][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 88.881530][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   88.881781][  T227] RIP: 0033:0x7f48e1801b77
[ 88.881991][ 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
[   88.882711][  T227] RSP: 002b:00007fff1d4dcc98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   88.883019][  T227] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f48e1801b77
[   88.883346][  T227] RDX: 0000000000000003 RSI: 000055e25e723320 RDI: 0000000000000001
[   88.883647][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[   88.883956][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000003
[   88.884270][  T227] R13: 00007f48e18bd760 R14: 0000000000000003 R15: 00007f48e18b89c0
| [   88.944301][  T227] ------------[ cut here ]------------
| [ 88.944604][ 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) 
| [   88.944978][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   88.945787][  T227] Tainted: [W]=WARN
[   88.945929][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 88.946168][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 88.946410][ 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
[   88.947080][  T227] RSP: 0018:ffffc90000aa7910 EFLAGS: 00010246
[   88.947319][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   88.947598][  T227] RDX: 0000000000000000 RSI: ffff88800aeaac98 RDI: ffff888008e50b28
[   88.947875][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[   88.948196][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[   88.948477][  T227] R13: ffff88800aeaa128 R14: ffff88800aeaa008 R15: ffff88800aeaa000
[   88.948758][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   88.949090][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   88.949327][  T227] CR2: 00007fff1d4d9ff8 CR3: 0000000008b36004 CR4: 0000000000772ef0
[   88.949610][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   88.949883][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   88.950314][  T227] PKRU: 55555554
[   88.950459][  T227] Call Trace:
[   88.950604][  T227]  <TASK>
[ 88.950702][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 88.950899][ T227] ? __warn (kernel/panic.c:748) 
[ 88.951057][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 88.951245][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 88.951439][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 88.951584][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 88.951772][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 88.951970][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 88.952180][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 88.952422][ 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) 
[ 88.952671][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 88.952885][ T227] register_netdevice (net/core/dev.c:11003) 
[ 88.953108][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 88.953325][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 88.953556][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 88.953821][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 88.954112][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 88.954381][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 88.954587][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 88.954800][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 88.955081][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 88.955288][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 88.955500][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 88.955710][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 88.955922][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 88.956120][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 88.956330][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 88.956556][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 88.956777][ T227] ksys_write (fs/read_write.c:731) 
[ 88.956940][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 88.957165][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 88.957372][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   88.957628][  T227] RIP: 0033:0x7f48e1801b77
[ 88.957847][ T227] Code: Unable to access opcode bytes at 0x7f48e1801b4d.

Code starting with the faulting instruction
===========================================
[   88.958155][  T227] RSP: 002b:00007fff1d4da338 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   88.958463][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f48e1801b77
[   88.958770][  T227] RDX: 0000000000000002 RSI: 000055e25e723320 RDI: 0000000000000001
[   88.959084][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[   88.959391][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000002
[   88.959699][  T227] R13: 00007f48e18bd760 R14: 0000000000000002 R15: 00007f48e18b89c0
| [   91.461955][  T227] ------------[ cut here ]------------
| [ 91.462224][ 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) 
| [   91.462648][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   91.463498][  T227] Tainted: [W]=WARN
[   91.463657][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 91.463911][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 91.464185][ 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
[   91.464899][  T227] RSP: 0018:ffffc90000aa7910 EFLAGS: 00010246
[   91.465168][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   91.465473][  T227] RDX: 0000000000000000 RSI: ffff88800ad42c98 RDI: ffff888008e50b28
[   91.465773][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[   91.466088][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[   91.466398][  T227] R13: ffff88800ad42128 R14: ffff88800ad42008 R15: ffff88800ad42000
[   91.466717][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   91.467084][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   91.467345][  T227] CR2: 000055e25e7021d8 CR3: 0000000008b36006 CR4: 0000000000772ef0
[   91.467650][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   91.467956][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   91.468268][  T227] PKRU: 55555554
[   91.468426][  T227] Call Trace:
[   91.468584][  T227]  <TASK>
[ 91.468695][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 91.468901][ T227] ? __warn (kernel/panic.c:748) 
[ 91.469069][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 91.469278][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 91.469492][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 91.469662][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 91.469863][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 91.470093][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 91.470309][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 91.470567][ 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) 
[ 91.470777][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 91.470988][ T227] register_netdevice (net/core/dev.c:11003) 
[ 91.471209][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 91.471422][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 91.471641][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 91.471907][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 91.472192][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 91.472457][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 91.472670][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 91.472882][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 91.473152][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 91.473354][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 91.473560][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 91.473765][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 91.473976][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 91.474156][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 91.474364][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 91.474577][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 91.474792][ T227] ksys_write (fs/read_write.c:731) 
[ 91.474951][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 91.475176][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 91.475382][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   91.475640][  T227] RIP: 0033:0x7f48e1801b77
[ 91.475849][ 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
[   91.476564][  T227] RSP: 002b:00007fff1d4da338 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   91.476875][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f48e1801b77
[   91.477197][  T227] RDX: 0000000000000002 RSI: 000055e25e723320 RDI: 0000000000000001
[   91.477497][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[   91.477800][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000002
[   91.478107][  T227] R13: 00007f48e18bd760 R14: 0000000000000002 R15: 00007f48e18b89c0
| [   93.891637][  T227] ------------[ cut here ]------------
| [ 93.891998][ 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) 
| [   93.892470][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   93.893388][  T227] Tainted: [W]=WARN
[   93.893560][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 93.893841][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 93.894146][ 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
[   93.894927][  T227] RSP: 0018:ffffc90000aa7520 EFLAGS: 00010246
[   93.895216][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   93.895556][  T227] RDX: 0000000000000000 RSI: ffff88800be52c98 RDI: ffff888008e50b78
[   93.895889][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[   93.896228][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[   93.896583][  T227] R13: ffff88800be52128 R14: ffff88800be52008 R15: ffff88800be52000
[   93.896915][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   93.897313][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   93.897692][  T227] CR2: 00007fb0adaba6f0 CR3: 0000000008b36005 CR4: 0000000000772ef0
[   93.898038][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   93.898371][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   93.898711][  T227] PKRU: 55555554
[   93.898883][  T227] Call Trace:
[   93.899068][  T227]  <TASK>
[ 93.899188][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 93.899419][ T227] ? __warn (kernel/panic.c:748) 
[ 93.899599][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 93.899834][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 93.900101][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 93.900276][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 93.900499][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 93.900737][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 93.900973][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 93.901271][ 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) 
[ 93.901502][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 93.901737][ T227] register_netdevice (net/core/dev.c:11003) 
[ 93.901969][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 93.902214][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 93.902457][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 93.902743][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 93.902917][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 93.903224][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 93.903509][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 93.903799][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 93.904044][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 93.904329][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 93.904561][ T227] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 93.904732][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 93.904970][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 93.905216][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 93.905447][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 93.905671][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 93.905898][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 93.906184][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 93.906419][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 93.906650][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 93.906874][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 93.907109][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 93.907341][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 93.907563][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 93.907783][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 93.908007][ T227] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 93.908254][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 93.908483][ T227] device_add (drivers/base/core.c:3672) 
[ 93.908719][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 93.908945][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 93.909190][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 93.909481][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 93.909774][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 93.909999][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 93.910238][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 93.910459][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 93.910687][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 93.910864][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 93.911104][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 93.911341][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 93.911584][ T227] ksys_write (fs/read_write.c:731) 
[ 93.911755][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 93.911993][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 93.912226][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   93.912502][  T227] RIP: 0033:0x7f48e1801b77
[ 93.912732][ 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
[   93.913519][  T227] RSP: 002b:00007fff1d4dcc98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   93.913854][  T227] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f48e1801b77
[   93.914191][  T227] RDX: 0000000000000003 RSI: 000055e25e723320 RDI: 0000000000000001
[   93.914523][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[   93.914856][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000003
[   93.915196][  T227] R13: 00007f48e18bd760 R14: 0000000000000003 R15: 00007f48e18b89c0
| [   93.964154][  T227] ------------[ cut here ]------------
| [ 93.964469][ 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) 
| [   93.964873][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   93.965716][  T227] Tainted: [W]=WARN
[   93.965868][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 93.966130][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 93.966390][ 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
[   93.967107][  T227] RSP: 0018:ffffc90000aa7910 EFLAGS: 00010246
[   93.967370][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   93.967678][  T227] RDX: 0000000000000000 RSI: ffff88800af0ac98 RDI: ffff888008e50b28
[   93.967983][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[   93.968710][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[   93.969004][  T227] R13: ffff88800af0a128 R14: ffff88800af0a008 R15: ffff88800af0a000
[   93.969315][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   93.969673][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   93.969927][  T227] CR2: 00007fb0adaba6f0 CR3: 0000000008b36005 CR4: 0000000000772ef0
[   93.970240][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   93.970541][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   93.970843][  T227] PKRU: 55555554
[   93.971001][  T227] Call Trace:
[   93.971165][  T227]  <TASK>
[ 93.971270][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 93.971478][ T227] ? __warn (kernel/panic.c:748) 
[ 93.971638][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 93.971842][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 93.972058][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 93.972216][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 93.972420][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 93.972639][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 93.972851][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 93.973235][ 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) 
[ 93.973450][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 93.973659][ T227] register_netdevice (net/core/dev.c:11003) 
[ 93.973870][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 93.974094][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 93.974318][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 93.974588][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 93.974866][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 93.975140][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 93.975347][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 93.975560][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 93.975822][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 93.976036][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 93.976243][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 93.976456][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 93.976668][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 93.976832][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 93.977052][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 93.977270][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 93.977481][ T227] ksys_write (fs/read_write.c:731) 
[ 93.977643][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 93.977860][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 93.978080][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   93.978334][  T227] RIP: 0033:0x7f48e1801b77
[ 93.978546][ 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
[   93.979268][  T227] RSP: 002b:00007fff1d4da7f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   93.979578][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f48e1801b77
[   93.979887][  T227] RDX: 0000000000000002 RSI: 000055e25e723320 RDI: 0000000000000001
[   93.980199][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[   93.980506][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000002
[   93.980809][  T227] R13: 00007f48e18bd760 R14: 0000000000000002 R15: 00007f48e18b89c0
| [   96.375137][  T227] ------------[ cut here ]------------
| [ 96.375476][ 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) 
| [   96.375963][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   96.377301][  T227] Tainted: [W]=WARN
[   96.377497][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 96.377799][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 96.378120][ 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
[   96.378916][  T227] RSP: 0018:ffffc90000aa7910 EFLAGS: 00010246
[   96.379229][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   96.379590][  T227] RDX: 0000000000000000 RSI: ffff888004c3ac98 RDI: ffff888008e50b28
[   96.379940][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[   96.380304][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[   96.380654][  T227] R13: ffff888004c3a128 R14: ffff888004c3a008 R15: ffff888004c3a000
[   96.381003][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   96.381429][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   96.381729][  T227] CR2: 00007fff1d4d9fe0 CR3: 0000000008b36003 CR4: 0000000000772ef0
[   96.382096][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   96.382453][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   96.382814][  T227] PKRU: 55555554
[   96.383001][  T227] Call Trace:
[   96.383200][  T227]  <TASK>
[ 96.383334][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 96.383579][ T227] ? __warn (kernel/panic.c:748) 
[ 96.383769][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 96.384016][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 96.384284][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 96.384480][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 96.384723][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 96.384978][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 96.385243][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 96.385548][ 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) 
[ 96.385797][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 96.386053][ T227] register_netdevice (net/core/dev.c:11003) 
[ 96.386309][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 96.386582][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 96.386844][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 96.387164][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 96.387485][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 96.387791][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 96.388052][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 96.388305][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 96.388624][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 96.388862][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 96.389119][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 96.389394][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 96.389646][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 96.389854][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 96.390122][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 96.390386][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 96.390639][ T227] ksys_write (fs/read_write.c:731) 
[ 96.390829][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 96.391098][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 96.391354][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   96.391662][  T227] RIP: 0033:0x7f48e1801b77
[ 96.391906][ 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
[   96.392706][  T227] RSP: 002b:00007fff1d4da7f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   96.393069][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f48e1801b77
[   96.393422][  T227] RDX: 0000000000000002 RSI: 000055e25e723320 RDI: 0000000000000001
[   96.393768][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[   96.394124][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000002
[   96.394479][  T227] R13: 00007f48e18bd760 R14: 0000000000000002 R15: 00007f48e18b89c0
| [   98.616710][  T227] ------------[ cut here ]------------
| [ 98.617118][ 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) 
| [   98.617551][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   98.618426][  T227] Tainted: [W]=WARN
[   98.618606][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 98.618887][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 98.619173][ 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
[   98.619905][  T227] RSP: 0018:ffffc90000aa7520 EFLAGS: 00010246
[   98.620191][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   98.620510][  T227] RDX: 0000000000000000 RSI: ffff88800ae2ac98 RDI: ffff888008e50b78
[   98.620832][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[   98.621317][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[   98.621645][  T227] R13: ffff88800ae2a128 R14: ffff88800ae2a008 R15: ffff88800ae2a000
[   98.621976][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   98.622390][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   98.622660][  T227] CR2: 000055c0b2283148 CR3: 0000000008b36006 CR4: 0000000000772ef0
[   98.622983][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   98.623309][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   98.623630][  T227] PKRU: 55555554
[   98.623797][  T227] Call Trace:
[   98.623967][  T227]  <TASK>
[ 98.624096][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 98.624322][ T227] ? __warn (kernel/panic.c:748) 
[ 98.624498][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 98.624730][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 98.624956][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 98.625143][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 98.625367][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 98.625600][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 98.625830][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 98.626113][ 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) 
[ 98.626338][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 98.626571][ T227] register_netdevice (net/core/dev.c:11003) 
[ 98.626805][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 98.627046][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 98.627285][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 98.627561][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 98.627736][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 98.628016][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 98.628309][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 98.628587][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 98.628821][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 98.629100][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 98.629327][ T227] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 98.629499][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 98.629731][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 98.629963][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 98.630194][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 98.630412][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 98.630634][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 98.630899][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 98.631134][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 98.631361][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 98.631589][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 98.631808][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 98.632044][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 98.632266][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 98.632482][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 98.632702][ T227] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 98.632930][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 98.633177][ T227] device_add (drivers/base/core.c:3672) 
[ 98.633403][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 98.633627][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 98.633857][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 98.634149][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 98.634428][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 98.634649][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 98.634882][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 98.635112][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 98.635346][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 98.635524][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 98.635751][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 98.635979][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 98.636218][ T227] ksys_write (fs/read_write.c:731) 
[ 98.636404][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 98.636641][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 98.636866][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   98.637149][  T227] RIP: 0033:0x7f48e1801b77
[ 98.637373][ 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
[   98.638114][  T227] RSP: 002b:00007fff1d4dcc98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   98.638441][  T227] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f48e1801b77
[   98.638758][  T227] RDX: 0000000000000003 RSI: 000055e25e723320 RDI: 0000000000000001
[   98.639088][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[   98.639413][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000003
[   98.639730][  T227] R13: 00007f48e18bd760 R14: 0000000000000003 R15: 00007f48e18b89c0
| [   98.691691][  T227] ------------[ cut here ]------------
| [ 98.691995][ 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) 
| [   98.692387][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   98.693177][  T227] Tainted: [W]=WARN
[   98.693325][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 98.693564][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 98.693812][ 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
[   98.694591][  T227] RSP: 0018:ffffc90000aa7910 EFLAGS: 00010246
[   98.694830][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   98.695115][  T227] RDX: 0000000000000000 RSI: ffff88800ae3ac98 RDI: ffff888008e50b28
[   98.695401][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[   98.695684][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[   98.695962][  T227] R13: ffff88800ae3a128 R14: ffff88800ae3a008 R15: ffff88800ae3a000
[   98.696288][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   98.696622][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   98.696861][  T227] CR2: 00007fff1d4d9ff8 CR3: 0000000008b36003 CR4: 0000000000772ef0
[   98.697146][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   98.697419][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   98.697689][  T227] PKRU: 55555554
[   98.697834][  T227] Call Trace:
[   98.697980][  T227]  <TASK>
[ 98.698086][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 98.698275][ T227] ? __warn (kernel/panic.c:748) 
[ 98.698420][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 98.698605][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 98.698799][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 98.698947][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 98.699139][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 98.699346][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 98.699540][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 98.699779][ 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) 
[ 98.699970][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 98.700182][ T227] register_netdevice (net/core/dev.c:11003) 
[ 98.700371][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 98.700572][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 98.700772][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 98.701010][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 98.701270][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 98.701511][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 98.701699][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 98.701897][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 98.702147][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 98.702333][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 98.702520][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 98.702710][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 98.702903][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 98.703064][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 98.703260][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 98.703455][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 98.703649][ T227] ksys_write (fs/read_write.c:731) 
[ 98.703793][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 98.703990][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 98.704192][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   98.704421][  T227] RIP: 0033:0x7f48e1801b77
[ 98.704614][ 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
[   98.705270][  T227] RSP: 002b:00007fff1d4da338 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   98.705552][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f48e1801b77
[   98.705838][  T227] RDX: 0000000000000002 RSI: 000055e25e723320 RDI: 0000000000000001
[   98.706125][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[   98.706406][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000002
[   98.706683][  T227] R13: 00007f48e18bd760 R14: 0000000000000002 R15: 00007f48e18b89c0
| [  100.841152][  T227] ------------[ cut here ]------------
| [ 100.841556][ 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) 
| [  100.841937][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  100.842731][  T227] Tainted: [W]=WARN
[  100.842874][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 100.843120][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 100.843363][ 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
[  100.844016][  T227] RSP: 0018:ffffc90000aa7910 EFLAGS: 00010246
[  100.844272][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  100.844549][  T227] RDX: 0000000000000000 RSI: ffff888009a92c98 RDI: ffff888008e50b28
[  100.844831][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[  100.845121][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[  100.845402][  T227] R13: ffff888009a92128 R14: ffff888009a92008 R15: ffff888009a92000
[  100.845685][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  100.846011][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  100.846258][  T227] CR2: 00007fb0ad9cba00 CR3: 0000000008b36001 CR4: 0000000000772ef0
[  100.846565][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  100.846849][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  100.847137][  T227] PKRU: 55555554
[  100.847282][  T227] Call Trace:
[  100.847426][  T227]  <TASK>
[ 100.847523][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 100.847714][ T227] ? __warn (kernel/panic.c:748) 
[ 100.847861][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 100.848063][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 100.848266][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 100.848412][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 100.848601][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 100.848808][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 100.849012][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 100.849271][ 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) 
[ 100.849474][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 100.849668][ T227] register_netdevice (net/core/dev.c:11003) 
[ 100.849862][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 100.850068][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 100.850276][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 100.850534][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 100.850801][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 100.851058][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 100.851248][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 100.851446][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 100.851686][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 100.851870][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 100.852077][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 100.852272][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 100.852466][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 100.852618][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 100.852810][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 100.853008][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 100.853216][ T227] ksys_write (fs/read_write.c:731) 
[ 100.853366][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 100.853568][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 100.853760][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  100.853988][  T227] RIP: 0033:0x7f48e1801b77
[ 100.854188][ 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
[  100.854838][  T227] RSP: 002b:00007fff1d4da338 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  100.855127][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f48e1801b77
[  100.855403][  T227] RDX: 0000000000000002 RSI: 000055e25e723320 RDI: 0000000000000001
[  100.855677][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[  100.855955][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000002
[  100.856235][  T227] R13: 00007f48e18bd760 R14: 0000000000000002 R15: 00007f48e18b89c0
| [  102.795851][  T227] ------------[ cut here ]------------
| [ 102.796449][ 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) 
| [  102.796865][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  102.797809][  T227] Tainted: [W]=WARN
[  102.797971][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 102.798341][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 102.798603][ 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
[  102.799414][  T227] RSP: 0018:ffffc90000aa7520 EFLAGS: 00010246
[  102.799677][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  102.799985][  T227] RDX: 0000000000000000 RSI: ffff88800aeaac98 RDI: ffff888008e50b78
[  102.800307][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[  102.800616][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[  102.801015][  T227] R13: ffff88800aeaa128 R14: ffff88800aeaa008 R15: ffff88800aeaa000
[  102.801339][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  102.801714][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  102.801969][  T227] CR2: 000055e25e6fa000 CR3: 0000000008b36004 CR4: 0000000000772ef0
[  102.802282][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  102.802592][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  102.802899][  T227] PKRU: 55555554
[  102.803066][  T227] Call Trace:
[  102.803223][  T227]  <TASK>
[ 102.803329][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 102.803536][ T227] ? __warn (kernel/panic.c:748) 
[ 102.803695][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 102.803900][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 102.804125][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 102.804287][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 102.804490][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 102.804708][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 102.804922][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 102.805188][ 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) 
[ 102.805400][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 102.805612][ T227] register_netdevice (net/core/dev.c:11003) 
[ 102.805831][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 102.806061][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 102.806288][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 102.806561][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 102.806721][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 102.806991][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 102.807264][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 102.807528][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 102.807745][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 102.808006][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 102.808228][ T227] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 102.808388][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 102.808600][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 102.808821][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 102.809045][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 102.809252][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 102.809461][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 102.809714][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 102.809921][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 102.810134][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 102.810347][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 102.810548][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 102.810760][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 102.810965][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 102.811175][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 102.811381][ T227] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 102.811596][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 102.811810][ T227] device_add (drivers/base/core.c:3672) 
[ 102.812020][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 102.812238][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 102.812457][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 102.812721][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 102.812985][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 102.813197][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 102.813411][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 102.813614][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 102.813825][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 102.813990][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 102.814209][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 102.814426][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 102.814641][ T227] ksys_write (fs/read_write.c:731) 
[ 102.814804][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 102.815018][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 102.815239][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  102.815496][  T227] RIP: 0033:0x7f48e1801b77
[ 102.815712][ 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
[  102.816443][  T227] RSP: 002b:00007fff1d4dcc98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  102.816751][  T227] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f48e1801b77
[  102.817068][  T227] RDX: 0000000000000003 RSI: 000055e25e723320 RDI: 0000000000000001
[  102.817374][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[  102.817682][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000003
[  102.817984][  T227] R13: 00007f48e18bd760 R14: 0000000000000003 R15: 00007f48e18b89c0
| [  102.864080][  T227] ------------[ cut here ]------------
| [ 102.864486][ 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) 
| [  102.864874][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  102.865672][  T227] Tainted: [W]=WARN
[  102.865828][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 102.866082][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 102.866336][ 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
[  102.867023][  T227] RSP: 0018:ffffc90000aa7910 EFLAGS: 00010246
[  102.867283][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  102.867569][  T227] RDX: 0000000000000000 RSI: ffff88800ad42c98 RDI: ffff888008e50b28
[  102.867852][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[  102.868235][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[  102.868608][  T227] R13: ffff88800ad42128 R14: ffff88800ad42008 R15: ffff88800ad42000
[  102.868938][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  102.869277][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  102.869521][  T227] CR2: 00007f04d3791000 CR3: 0000000008b36002 CR4: 0000000000772ef0
[  102.869811][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  102.870106][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  102.870389][  T227] PKRU: 55555554
[  102.870542][  T227] Call Trace:
[  102.870697][  T227]  <TASK>
[ 102.870807][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 102.871011][ T227] ? __warn (kernel/panic.c:748) 
[ 102.871184][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 102.871385][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 102.871604][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 102.871862][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 102.872078][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 102.872295][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 102.872509][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 102.872763][ 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) 
[ 102.872966][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 102.873199][ T227] register_netdevice (net/core/dev.c:11003) 
[ 102.873405][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 102.873618][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 102.873833][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 102.874104][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 102.874373][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 102.874629][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 102.874830][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 102.875051][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 102.875302][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 102.875507][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 102.875712][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 102.875917][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 102.876131][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 102.876304][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 102.876514][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 102.876726][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 102.877203][ T227] ksys_write (fs/read_write.c:731) 
[ 102.877364][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 102.877575][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 102.877775][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  102.878133][  T227] RIP: 0033:0x7f48e1801b77
[ 102.878339][ 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
[  102.878990][  T227] RSP: 002b:00007fff1d4da598 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  102.879288][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f48e1801b77
[  102.879578][  T227] RDX: 0000000000000002 RSI: 000055e25e723320 RDI: 0000000000000001
[  102.880122][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[  102.880412][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000002
[  102.880812][  T227] R13: 00007f48e18bd760 R14: 0000000000000002 R15: 00007f48e18b89c0
| [  104.913418][  T227] ------------[ cut here ]------------
| [ 104.913701][ 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) 
| [  104.914109][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  104.914906][  T227] Tainted: [W]=WARN
[  104.915079][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 104.915326][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 104.915587][ 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
[  104.916270][  T227] RSP: 0018:ffffc90000aa7910 EFLAGS: 00010246
[  104.916534][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  104.916833][  T227] RDX: 0000000000000000 RSI: ffff88800be52c98 RDI: ffff888008e50b28
[  104.917143][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[  104.917434][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[  104.917739][  T227] R13: ffff88800be52128 R14: ffff88800be52008 R15: ffff88800be52000
[  104.918038][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  104.918387][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  104.918643][  T227] CR2: 000055e25e7021d8 CR3: 0000000008b36002 CR4: 0000000000772ef0
[  104.918941][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  104.919251][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  104.919551][  T227] PKRU: 55555554
[  104.919709][  T227] Call Trace:
[  104.919865][  T227]  <TASK>
[ 104.919977][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 104.920190][ T227] ? __warn (kernel/panic.c:748) 
[ 104.920351][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 104.920563][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 104.920774][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 104.920941][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 104.921150][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 104.921367][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 104.921577][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 104.921831][ 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) 
[ 104.922044][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 104.922252][ T227] register_netdevice (net/core/dev.c:11003) 
[ 104.922463][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 104.922680][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 104.922901][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 104.923173][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 104.923446][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 104.923707][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 104.923916][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 104.924139][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 104.924394][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 104.924595][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 104.924798][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 104.925002][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 104.925223][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 104.925388][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 104.925594][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 104.925808][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 104.926021][ T227] ksys_write (fs/read_write.c:731) 
[ 104.926187][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 104.926409][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 104.926611][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  104.926864][  T227] RIP: 0033:0x7f48e1801b77
[ 104.927082][ 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
[  104.927739][  T227] RSP: 002b:00007fff1d4da598 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  104.928045][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f48e1801b77
[  104.928335][  T227] RDX: 0000000000000002 RSI: 000055e25e723320 RDI: 0000000000000001
[  104.928624][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[  104.928915][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000002
[  104.929220][  T227] R13: 00007f48e18bd760 R14: 0000000000000002 R15: 00007f48e18b89c0
| [  106.636356][  T227] ------------[ cut here ]------------
| [ 106.636754][ 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) 
| [  106.637188][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  106.638042][  T227] Tainted: [W]=WARN
[  106.638202][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 106.638458][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 106.638722][ 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
[  106.639503][  T227] RSP: 0018:ffffc90000aa7520 EFLAGS: 00010246
[  106.639766][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  106.640075][  T227] RDX: 0000000000000000 RSI: ffff88800af0ac98 RDI: ffff888008e50b78
[  106.640382][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[  106.640685][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[  106.640990][  T227] R13: ffff88800af0a128 R14: ffff88800af0a008 R15: ffff88800af0a000
[  106.641322][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  106.641766][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  106.642041][  T227] CR2: 000055e25e6fa000 CR3: 0000000008b36001 CR4: 0000000000772ef0
[  106.642345][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  106.642649][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  106.642963][  T227] PKRU: 55555554
[  106.643130][  T227] Call Trace:
[  106.643286][  T227]  <TASK>
[ 106.643393][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 106.643602][ T227] ? __warn (kernel/panic.c:748) 
[ 106.643762][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 106.643974][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 106.644221][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 106.644381][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 106.644586][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 106.644806][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 106.645024][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 106.645292][ 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) 
[ 106.645504][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 106.645717][ T227] register_netdevice (net/core/dev.c:11003) 
[ 106.645951][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 106.646185][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 106.646416][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 106.646679][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 106.646837][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 106.647112][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 106.647380][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 106.647646][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 106.647863][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 106.648134][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 106.648346][ T227] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 106.648502][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 106.648716][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 106.648934][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 106.649151][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 106.649359][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 106.649565][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 106.649816][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 106.650022][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 106.650238][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 106.650449][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 106.650652][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 106.650862][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 106.651075][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 106.651278][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 106.651481][ T227] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 106.651693][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 106.651907][ T227] device_add (drivers/base/core.c:3672) 
[ 106.652127][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 106.652331][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 106.652548][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 106.652811][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 106.653085][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 106.653286][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 106.653503][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 106.653706][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 106.653914][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 106.654089][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 106.654297][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 106.654516][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 106.654729][ T227] ksys_write (fs/read_write.c:731) 
[ 106.654891][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 106.655115][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 106.655327][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  106.655578][  T227] RIP: 0033:0x7f48e1801b77
[ 106.655789][ 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
[  106.656517][  T227] RSP: 002b:00007fff1d4dcc98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  106.656825][  T227] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f48e1801b77
[  106.657138][  T227] RDX: 0000000000000003 RSI: 000055e25e723320 RDI: 0000000000000001
[  106.657438][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[  106.657748][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000003
[  106.658061][  T227] R13: 00007f48e18bd760 R14: 0000000000000003 R15: 00007f48e18b89c0
| [  106.782348][  T227] ------------[ cut here ]------------
| [ 106.782653][ 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) 
| [  106.783079][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  106.783844][  T227] Tainted: [W]=WARN
[  106.783992][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 106.784256][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 106.784497][ 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
[  106.785162][  T227] RSP: 0018:ffffc90000aa7910 EFLAGS: 00010246
[  106.785406][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  106.785681][  T227] RDX: 0000000000000000 RSI: ffff888004c3ac98 RDI: ffff888008e50b28
[  106.785960][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[  106.786244][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[  106.786536][  T227] R13: ffff888004c3a128 R14: ffff888004c3a008 R15: ffff888004c3a000
[  106.786814][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  106.787140][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  106.787375][  T227] CR2: 000055e25e723320 CR3: 0000000008b36006 CR4: 0000000000772ef0
[  106.787796][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  106.788092][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  106.788377][  T227] PKRU: 55555554
[  106.788522][  T227] Call Trace:
[  106.788665][  T227]  <TASK>
[ 106.788764][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 106.788961][ T227] ? __warn (kernel/panic.c:748) 
[ 106.789123][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 106.789311][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 106.789508][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 106.789652][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 106.789838][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 106.790048][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 106.790246][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 106.790488][ 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) 
[ 106.790686][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 106.790877][ T227] register_netdevice (net/core/dev.c:11003) 
[ 106.791087][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 106.791284][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 106.791489][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 106.791735][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 106.791995][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 106.792251][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 106.792443][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 106.792640][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 106.792878][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 106.793072][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 106.793261][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 106.793454][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 106.793650][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 106.793802][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 106.793995][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 106.794189][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 106.794390][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 106.794591][ T227] ksys_write (fs/read_write.c:731) 
[ 106.794735][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 106.794929][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 106.795136][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 106.795325][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  106.795558][  T227] RIP: 0033:0x7f48e1801b77
[ 106.795753][ 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
[  106.796423][  T227] RSP: 002b:00007fff1d4dcc98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  106.796704][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f48e1801b77
[  106.796978][  T227] RDX: 0000000000000002 RSI: 000055e25e723320 RDI: 0000000000000001
[  106.797272][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[  106.797556][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000002
[  106.797828][  T227] R13: 00007f48e18bd760 R14: 0000000000000002 R15: 00007f48e18b89c0
| [  107.372090][  T227] ------------[ cut here ]------------
| [ 107.372399][ 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) 
| [  107.372781][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  107.373563][  T227] Tainted: [W]=WARN
[  107.373708][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 107.373941][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 107.374184][ 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
[  107.374837][  T227] RSP: 0018:ffffc90000aa7910 EFLAGS: 00010246
[  107.375089][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  107.375372][  T227] RDX: 0000000000000000 RSI: ffff88800ae2ac98 RDI: ffff888008e50b28
[  107.375654][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[  107.375938][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[  107.376230][  T227] R13: ffff88800ae2a128 R14: ffff88800ae2a008 R15: ffff88800ae2a000
[  107.376526][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  107.376857][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  107.377106][  T227] CR2: 000055e25e723320 CR3: 0000000008b36001 CR4: 0000000000772ef0
[  107.377390][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  107.377672][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  107.377952][  T227] PKRU: 55555554
[  107.378159][  T227] Call Trace:
[  107.378301][  T227]  <TASK>
[ 107.378398][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 107.378589][ T227] ? __warn (kernel/panic.c:748) 
[ 107.378737][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 107.378933][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 107.379147][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 107.379298][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 107.379502][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 107.379711][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 107.379919][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 107.380170][ 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) 
[ 107.380365][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 107.380558][ T227] register_netdevice (net/core/dev.c:11003) 
[ 107.380759][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 107.380966][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 107.381188][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 107.381435][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 107.381696][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 107.381943][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 107.382140][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 107.382341][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 107.382584][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 107.382779][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 107.382966][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 107.383170][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 107.383364][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 107.383516][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 107.383709][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 107.383900][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 107.384110][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 107.384307][ T227] ksys_write (fs/read_write.c:731) 
[ 107.384454][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 107.384639][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 107.384833][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 107.385024][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  107.385266][  T227] RIP: 0033:0x7f48e1801b77
[ 107.385472][ 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
[  107.386128][  T227] RSP: 002b:00007fff1d4dcc98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  107.386414][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f48e1801b77
[  107.386698][  T227] RDX: 0000000000000002 RSI: 000055e25e723320 RDI: 0000000000000001
[  107.386977][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[  107.387260][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000002
[  107.387535][  T227] R13: 00007f48e18bd760 R14: 0000000000000002 R15: 00007f48e18b89c0
| [  114.635915][  T227] ------------[ cut here ]------------
| [ 114.636214][ 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) 
| [  114.636621][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  114.637429][  T227] Tainted: [W]=WARN
[  114.637586][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 114.637824][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 114.638082][ 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
[  114.638742][  T227] RSP: 0018:ffffc90000aa7910 EFLAGS: 00010246
[  114.638983][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  114.639280][  T227] RDX: 0000000000000000 RSI: ffff888009a92c98 RDI: ffff888008e50b28
[  114.639575][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[  114.639859][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[  114.640175][  T227] R13: ffff888009a92128 R14: ffff888009a92008 R15: ffff888009a92000
[  114.640455][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  114.640796][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  114.641055][  T227] CR2: 00007f48e181ecb0 CR3: 0000000008b36002 CR4: 0000000000772ef0
[  114.641344][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  114.641651][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  114.641959][  T227] PKRU: 55555554
[  114.642137][  T227] Call Trace:
[  114.642294][  T227]  <TASK>
[ 114.642406][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 114.642614][ T227] ? __warn (kernel/panic.c:748) 
[ 114.642776][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 114.642982][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 114.643281][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 114.643446][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 114.643636][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 114.643839][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 114.644085][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 114.644326][ 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) 
[ 114.644529][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 114.644729][ T227] register_netdevice (net/core/dev.c:11003) 
[ 114.644923][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 114.645132][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 114.645341][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 114.645586][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 114.645844][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 114.646128][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 114.646332][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 114.646538][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 114.646780][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 114.646968][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 114.647168][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 114.647362][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 114.647571][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 114.647725][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 114.647919][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 114.648152][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 114.648351][ T227] ksys_write (fs/read_write.c:731) 
[ 114.648498][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 114.648699][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 114.648890][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  114.649139][  T227] RIP: 0033:0x7f48e1801b77
[ 114.649335][ 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
[  114.649991][  T227] RSP: 002b:00007fff1d4dcc98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  114.650302][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f48e1801b77
[  114.650591][  T227] RDX: 0000000000000002 RSI: 000055e25e723320 RDI: 0000000000000001
[  114.650872][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[  114.651166][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000002
[  114.651447][  T227] R13: 00007f48e18bd760 R14: 0000000000000002 R15: 00007f48e18b89c0
| [  116.886501][  T227] ------------[ cut here ]------------
| [ 116.886887][ 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) 
| [  116.887406][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  116.888899][  T227] Tainted: [W]=WARN
[  116.889106][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 116.889419][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 116.889739][ 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
[  116.890705][  T227] RSP: 0018:ffffc90000aa7520 EFLAGS: 00010246
[  116.891042][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  116.891414][  T227] RDX: 0000000000000000 RSI: ffff88800ae3ac98 RDI: ffff888008e50b78
[  116.891779][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[  116.892169][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[  116.892530][  T227] R13: ffff88800ae3a128 R14: ffff88800ae3a008 R15: ffff88800ae3a000
[  116.892897][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  116.893327][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  116.893639][  T227] CR2: 000055e25e71a648 CR3: 0000000008b36001 CR4: 0000000000772ef0
[  116.894003][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  116.894380][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  116.894742][  T227] PKRU: 55555554
[  116.894929][  T227] Call Trace:
[  116.895128][  T227]  <TASK>
[ 116.895259][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 116.895507][ T227] ? __warn (kernel/panic.c:748) 
[ 116.895698][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 116.895953][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 116.896220][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 116.896420][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 116.896673][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 116.896943][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 116.897221][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 116.897562][ 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) 
[ 116.897815][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 116.898077][ T227] register_netdevice (net/core/dev.c:11003) 
[ 116.898329][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 116.898587][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 116.898849][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 116.899181][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 116.899375][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 116.899692][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 116.900005][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 116.900330][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 116.900588][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 116.900896][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 116.901165][ T227] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 116.901355][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 116.901611][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 116.901864][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 116.902121][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 116.902367][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 116.902616][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 116.902921][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 116.903178][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 116.903424][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 116.903670][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 116.903914][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 116.904177][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 116.904424][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 116.904672][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 116.904918][ T227] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 116.905180][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 116.905431][ T227] device_add (drivers/base/core.c:3672) 
[ 116.905680][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 116.905924][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 116.906190][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 116.906528][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 116.906844][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 116.907103][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 116.907357][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 116.907601][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 116.907852][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 116.908061][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 116.908318][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 116.908574][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 116.908828][ T227] ksys_write (fs/read_write.c:731) 
[ 116.909015][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 116.909284][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 116.909536][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  116.909839][  T227] RIP: 0033:0x7f48e1801b77
[ 116.910105][ 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
[  116.910946][  T227] RSP: 002b:00007fff1d4dcc98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  116.911324][  T227] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f48e1801b77
[  116.911691][  T227] RDX: 0000000000000003 RSI: 000055e25e723320 RDI: 0000000000000001
[  116.912063][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[  116.912427][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000003
[  116.912787][  T227] R13: 00007f48e18bd760 R14: 0000000000000003 R15: 00007f48e18b89c0
| [  117.029264][  T227] ------------[ cut here ]------------
| [ 117.029640][ 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) 
| [  117.030139][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  117.031125][  T227] Tainted: [W]=WARN
[  117.031320][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 117.031615][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 117.031921][ 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
[  117.032732][  T227] RSP: 0018:ffffc90000aa7910 EFLAGS: 00010246
[  117.033039][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  117.033383][  T227] RDX: 0000000000000000 RSI: ffff88800ad42c98 RDI: ffff888008e50b28
[  117.033732][  T227] RBP: ffffffffbf723440 R08: 0000000000000000 R09: fffffbfff7abd83c
[  117.034096][  T227] R10: ffffffffbd5ec1e7 R11: ffff888008e50040 R12: 0000000000000000
[  117.034448][  T227] R13: ffff88800ad42128 R14: ffff88800ad42008 R15: ffff88800ad42000
[  117.034788][  T227] FS:  00007f48e16c0740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  117.035202][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  117.035485][  T227] CR2: 00007f48e1874733 CR3: 0000000008b36001 CR4: 0000000000772ef0
[  117.035974][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  117.036348][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  117.036708][  T227] PKRU: 55555554
[  117.036888][  T227] Call Trace:
[  117.037069][  T227]  <TASK>
[ 117.037187][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 117.037427][ T227] ? __warn (kernel/panic.c:748) 
[ 117.037605][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 117.037834][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 117.038077][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 117.038258][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 117.038499][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 117.038740][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 117.038991][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 117.039297][ 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) 
[ 117.039537][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 117.039774][ T227] register_netdevice (net/core/dev.c:11003) 
[ 117.040019][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 117.040269][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 117.040516][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 117.040813][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 117.041151][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 117.041457][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 117.041692][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 117.041928][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 117.042237][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 117.042465][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 117.042691][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 117.042925][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 117.043175][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 117.043362][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 117.043607][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 117.043843][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 117.044104][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 117.044349][ T227] ksys_write (fs/read_write.c:731) 
[ 117.044525][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 117.044752][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 117.044996][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 117.045235][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  117.045519][  T227] RIP: 0033:0x7f48e1801b77
[ 117.045763][ 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
[  117.046576][  T227] RSP: 002b:00007fff1d4dcc98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  117.046926][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f48e1801b77
[  117.047279][  T227] RDX: 0000000000000002 RSI: 000055e25e723320 RDI: 0000000000000001
[  117.047628][  T227] RBP: 000055e25e723320 R08: 0000000000000000 R09: 00007f48e18744e0
[  117.047961][  T227] R10: 00007f48e18743e0 R11: 0000000000000246 R12: 0000000000000002


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