======================================
| 0
| xx__-> [    9.048188][  T227] ------------[ cut here ]------------
| [ 9.048611][ 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) 
| [    9.049119][  T227] Modules linked in: netdevsim
[    9.049709][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.049976][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.050321][ 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
[    9.051049][  T227] RSP: 0018:ffffc90000b37520 EFLAGS: 00010246
[    9.051325][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.051642][  T227] RDX: 0000000000000000 RSI: ffff88800b9e2c98 RDI: ffff88800a530b78
[    9.051955][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[    9.052272][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[    9.052595][  T227] R13: ffff88800b9e2128 R14: ffff88800b9e2008 R15: ffff88800b9e2000
[    9.052907][  T227] FS:  00007f839af32740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[    9.053283][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.053546][  T227] CR2: 000055d38ca81338 CR3: 0000000005936003 CR4: 0000000000772ef0
[    9.053858][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.054182][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.054493][  T227] PKRU: 55555554
[    9.054653][  T227] Call Trace:
[    9.054813][  T227]  <TASK>
[ 9.054928][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.055151][ T227] ? __warn (kernel/panic.c:748) 
[ 9.055313][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.055523][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.055737][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.055899][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.056115][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.056338][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.056556][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.056822][ 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) 
[ 9.057039][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.057260][ T227] register_netdevice (net/core/dev.c:11003) 
[ 9.057481][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.057705][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.057930][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.058206][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.058368][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.058641][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.058909][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.059188][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.059412][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.059684][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.059894][ 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)) 
[ 9.060052][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.060276][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.060491][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.060701][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 9.060912][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.061136][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.061391][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.061600][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.061805][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.062012][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.062225][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.062441][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 9.062659][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.062863][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.063072][ 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) 
[ 9.063296][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 9.063507][ T227] device_add (drivers/base/core.c:3672) 
[ 9.063719][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.063926][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.064159][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.064428][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.064697][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.064902][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.065123][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.065329][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.065541][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.065710][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.065923][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.066137][ 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) 
[ 9.066353][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.066569][ T227] ksys_write (fs/read_write.c:731) 
[ 9.066730][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.066938][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.067178][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.067388][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.067642][  T227] RIP: 0033:0x7f839b073b77
[ 9.067860][ 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
[    9.068583][  T227] RSP: 002b:00007ffce19f05f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.068902][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f839b073b77
[    9.069222][  T227] RDX: 0000000000000004 RSI: 000055d38ca80330 RDI: 0000000000000001
[    9.069533][  T227] RBP: 000055d38ca80330 R08: 0000000000000003 R09: 0000000000000077
[    9.069842][  T227] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000004
[    9.070166][  T227] R13: 00007f839b12f760 R14: 0000000000000004 R15: 00007f839b12a9c0
| [   13.932678][  T227] ------------[ cut here ]------------
| [ 13.933031][ 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) 
| [   13.933448][  T227] Modules linked in: netdevsim [last unloaded: ip6_udp_tunnel]
| [   13.934155][  T227] Tainted: [W]=WARN
[   13.934337][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 13.934587][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 13.934849][ 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
[   13.935535][  T227] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[   13.935793][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   13.936102][  T227] RDX: 0000000000000000 RSI: ffff88801413ac98 RDI: ffff88800a530b28
[   13.936404][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   13.936705][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   13.937007][  T227] R13: ffff88801413a128 R14: ffff88801413a008 R15: ffff88801413a000
[   13.937313][  T227] FS:  00007f839af32740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   13.937766][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   13.938020][  T227] CR2: 00007f4b5e71da00 CR3: 0000000005936002 CR4: 0000000000772ef0
[   13.938331][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   13.938628][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   13.938925][  T227] PKRU: 55555554
[   13.939084][  T227] Call Trace:
[   13.939251][  T227]  <TASK>
[ 13.939368][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 13.939574][ T227] ? __warn (kernel/panic.c:748) 
[ 13.939737][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 13.939947][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 13.940168][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 13.940331][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 13.940536][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 13.940757][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 13.940970][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 13.941236][ 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) 
[ 13.941447][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 13.941659][ T227] register_netdevice (net/core/dev.c:11003) 
[ 13.941868][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 13.942083][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 13.942316][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 13.942585][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 13.942877][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 13.943152][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 13.943358][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 13.943680][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 13.943940][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 13.944156][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 13.944363][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 13.944570][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 13.944780][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 13.944947][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 13.945170][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 13.945379][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 13.945595][ T227] ksys_write (fs/read_write.c:731) 
[ 13.945752][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 13.945966][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 13.946183][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   13.946433][  T227] RIP: 0033:0x7f839b073b77
[ 13.946642][ 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
[   13.947317][  T227] RSP: 002b:00007ffce19f04f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   13.947625][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f839b073b77
[   13.947921][  T227] RDX: 0000000000000002 RSI: 000055d38ca80330 RDI: 0000000000000001
[   13.948221][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   13.948517][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000002
[   13.948804][  T227] R13: 00007f839b12f760 R14: 0000000000000002 R15: 00007f839b12a9c0
| [   19.114014][  T227] ------------[ cut here ]------------
| [ 19.114459][ 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) 
| [   19.114891][  T227] Modules linked in: netdevsim [last unloaded: netdevsim]
| [   19.115689][  T227] Tainted: [W]=WARN
[   19.115861][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.116154][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 19.116448][ 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
[   19.117203][  T227] RSP: 0018:ffffc90000b37520 EFLAGS: 00010246
[   19.117500][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   19.117821][  T227] RDX: 0000000000000000 RSI: ffff888014e9ac98 RDI: ffff88800a530b78
[   19.118191][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   19.118514][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   19.118848][  T227] R13: ffff888014e9a128 R14: ffff888014e9a008 R15: ffff888014e9a000
[   19.119280][  T227] FS:  00007f839af32740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   19.119653][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.119925][  T227] CR2: 00007f839b0e6733 CR3: 0000000005936005 CR4: 0000000000772ef0
[   19.120260][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   19.120614][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   19.120940][  T227] PKRU: 55555554
[   19.121136][  T227] Call Trace:
[   19.121318][  T227]  <TASK>
[ 19.121440][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 19.121673][ T227] ? __warn (kernel/panic.c:748) 
[ 19.121847][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 19.122076][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 19.122331][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 19.122507][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 19.122738][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 19.122974][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 19.123239][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 19.123527][ 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) 
[ 19.123762][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 19.124016][ T227] register_netdevice (net/core/dev.c:11003) 
[ 19.124269][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 19.124543][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 19.124801][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 19.125080][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 19.125308][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 19.125629][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 19.125917][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 19.126244][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 19.126480][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 19.126764][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 19.127025][ 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)) 
[ 19.127214][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 19.127460][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 19.127689][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 19.127915][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 19.128179][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 19.128424][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 19.128697][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 19.128921][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 19.129152][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 19.129400][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 19.129639][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 19.129874][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 19.130135][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 19.130363][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 19.130622][ 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) 
[ 19.130852][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 19.131084][ T227] device_add (drivers/base/core.c:3672) 
[ 19.131353][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 19.131576][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 19.131833][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 19.132132][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 19.132448][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 19.132694][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 19.132932][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 19.133172][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 19.133401][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 19.133583][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 19.133824][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 19.134053][ 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) 
[ 19.134306][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 19.134548][ T227] ksys_write (fs/read_write.c:731) 
[ 19.134721][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 19.134940][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 19.135186][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 19.135411][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.135694][  T227] RIP: 0033:0x7f839b073b77
[ 19.135919][ 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
[   19.136685][  T227] RSP: 002b:00007ffce19f3d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   19.137011][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f839b073b77
[   19.137351][  T227] RDX: 0000000000000004 RSI: 000055d38ca80330 RDI: 0000000000000001
[   19.137669][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   19.137991][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000004
[   19.138323][  T227] R13: 00007f839b12f760 R14: 0000000000000004 R15: 00007f839b12a9c0
| [   19.174058][  T227] ------------[ cut here ]------------
| [ 19.175749][ 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) 
| [   19.176326][  T227] Modules linked in: netdevsim [last unloaded: netdevsim]
| [   19.177014][  T227] Tainted: [W]=WARN
[   19.177192][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.177447][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 19.177701][ 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
[   19.178411][  T227] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[   19.178680][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   19.178987][  T227] RDX: 0000000000000000 RSI: ffff88800bb32c98 RDI: ffff88800a530b28
[   19.179297][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   19.179603][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   19.179905][  T227] R13: ffff88800bb32128 R14: ffff88800bb32008 R15: ffff88800bb32000
[   19.180219][  T227] FS:  00007f839af32740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   19.180567][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.180818][  T227] CR2: 00007f4b5e51f870 CR3: 0000000005936005 CR4: 0000000000772ef0
[   19.181130][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   19.181440][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   19.181736][  T227] PKRU: 55555554
[   19.182009][  T227] Call Trace:
[   19.182191][  T227]  <TASK>
[ 19.182305][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 19.182520][ T227] ? __warn (kernel/panic.c:748) 
[ 19.182697][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 19.182917][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 19.183161][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 19.183327][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 19.183533][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 19.183754][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 19.183970][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 19.184250][ 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) 
[ 19.184490][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 19.184708][ T227] register_netdevice (net/core/dev.c:11003) 
[ 19.184914][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 19.185142][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 19.185359][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 19.185622][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 19.185903][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 19.186177][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 19.186379][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 19.186593][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 19.186846][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 19.187047][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 19.187266][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 19.187479][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 19.187685][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 19.187860][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 19.188068][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 19.188303][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 19.188517][ T227] ksys_write (fs/read_write.c:731) 
[ 19.188675][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 19.188912][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 19.189148][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.189401][  T227] RIP: 0033:0x7f839b073b77
[ 19.189611][ 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
[   19.190322][  T227] RSP: 002b:00007ffce19f3d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   19.190648][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f839b073b77
[   19.190952][  T227] RDX: 0000000000000002 RSI: 000055d38ca80330 RDI: 0000000000000001
[   19.191288][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   19.191587][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000002
[   19.192065][  T227] R13: 00007f839b12f760 R14: 0000000000000002 R15: 00007f839b12a9c0
| [   25.332012][  T227] ------------[ cut here ]------------
| [ 25.332334][ 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) 
| [   25.332766][  T227] Modules linked in: netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   25.333599][  T227] Tainted: [W]=WARN
[   25.333758][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 25.334015][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.334299][ 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
[   25.335018][  T227] RSP: 0018:ffffc90000b37520 EFLAGS: 00010246
[   25.335292][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   25.335598][  T227] RDX: 0000000000000000 RSI: ffff888004fa2c98 RDI: ffff88800a530b78
[   25.335908][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   25.336314][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   25.336625][  T227] R13: ffff888004fa2128 R14: ffff888004fa2008 R15: ffff888004fa2000
[   25.336930][  T227] FS:  00007f839af32740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   25.337294][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.337552][  T227] CR2: 00007f839b0e6733 CR3: 0000000005936002 CR4: 0000000000772ef0
[   25.337859][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.338173][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.338483][  T227] PKRU: 55555554
[   25.338640][  T227] Call Trace:
[   25.338801][  T227]  <TASK>
[ 25.338916][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.339134][ T227] ? __warn (kernel/panic.c:748) 
[ 25.339294][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.339507][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 25.339725][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 25.339884][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 25.340155][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 25.340383][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.340601][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 25.340867][ 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) 
[ 25.341084][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 25.341308][ T227] register_netdevice (net/core/dev.c:11003) 
[ 25.341524][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 25.341750][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 25.341979][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 25.342256][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 25.342416][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 25.342698][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 25.342970][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 25.343248][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 25.343475][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 25.343742][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 25.343958][ 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)) 
[ 25.344125][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 25.344346][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 25.344565][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 25.344780][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 25.344993][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 25.345215][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 25.345473][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 25.345686][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 25.345894][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 25.346112][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 25.346326][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 25.346546][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 25.346757][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 25.346967][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 25.347187][ 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) 
[ 25.347407][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 25.347620][ T227] device_add (drivers/base/core.c:3672) 
[ 25.347838][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 25.348050][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 25.348282][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 25.348554][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 25.348828][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 25.349040][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 25.349264][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 25.349473][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 25.349703][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 25.349871][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 25.350085][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 25.350301][ 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) 
[ 25.350519][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 25.350733][ T227] ksys_write (fs/read_write.c:731) 
[ 25.350893][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 25.351106][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 25.351329][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 25.351540][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.351795][  T227] RIP: 0033:0x7f839b073b77
[ 25.352009][ 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
[   25.352757][  T227] RSP: 002b:00007ffce19f3d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   25.353068][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f839b073b77
[   25.353382][  T227] RDX: 0000000000000004 RSI: 000055d38ca80330 RDI: 0000000000000001
[   25.353689][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   25.353997][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000004
[   25.354313][  T227] R13: 00007f839b12f760 R14: 0000000000000004 R15: 00007f839b12a9c0
| [   25.394907][  T227] ------------[ cut here ]------------
| [ 25.395356][ 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) 
| [   25.395737][  T227] Modules linked in: netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   25.396464][  T227] Tainted: [W]=WARN
[   25.396611][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 25.396850][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.397104][ 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
[   25.397753][  T227] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[   25.397991][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   25.398281][  T227] RDX: 0000000000000000 RSI: ffff88801423ac98 RDI: ffff88800a530b28
[   25.398563][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   25.398845][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   25.399134][  T227] R13: ffff88801423a128 R14: ffff88801423a008 R15: ffff88801423a000
[   25.399416][  T227] FS:  00007f839af32740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   25.399742][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.399980][  T227] CR2: 00007f839b02b890 CR3: 0000000005936002 CR4: 0000000000772ef0
[   25.400274][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   25.400559][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   25.400838][  T227] PKRU: 55555554
[   25.400980][  T227] Call Trace:
[   25.401232][  T227]  <TASK>
[ 25.401336][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.401525][ T227] ? __warn (kernel/panic.c:748) 
[ 25.401673][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.401870][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 25.402069][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 25.402226][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 25.402422][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 25.402632][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 25.402837][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 25.403084][ 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) 
[ 25.403292][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 25.403488][ T227] register_netdevice (net/core/dev.c:11003) 
[ 25.403688][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 25.403906][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 25.404123][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 25.404367][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 25.404768][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 25.405014][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 25.405215][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 25.405421][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 25.405770][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 25.405958][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 25.406160][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 25.406467][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 25.406661][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 25.406810][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 25.407001][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 25.407313][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 25.407513][ T227] ksys_write (fs/read_write.c:731) 
[ 25.407659][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 25.407858][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 25.408046][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.408289][  T227] RIP: 0033:0x7f839b073b77
[ 25.408480][ 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
[   25.409254][  T227] RSP: 002b:00007ffce19f17c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   25.409537][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f839b073b77
[   25.409923][  T227] RDX: 0000000000000002 RSI: 000055d38ca80330 RDI: 0000000000000001
[   25.410220][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   25.410503][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000002
[   25.410894][  T227] R13: 00007f839b12f760 R14: 0000000000000002 R15: 00007f839b12a9c0
| [   36.886575][  T227] ------------[ cut here ]------------
| [ 36.886815][ 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) 
| [   36.887221][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   36.888019][  T227] Tainted: [W]=WARN
[   36.888186][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 36.888427][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 36.888692][ 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
[   36.889347][  T227] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[   36.889592][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   36.889876][  T227] RDX: 0000000000000000 RSI: ffff888005f52c98 RDI: ffff88800a530b28
[   36.890162][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   36.890464][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   36.890754][  T227] R13: ffff888005f52128 R14: ffff888005f52008 R15: ffff888005f52000
[   36.891052][  T227] FS:  00007f839af32740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   36.891482][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   36.891739][  T227] CR2: 00007f5273cfe000 CR3: 0000000005936005 CR4: 0000000000772ef0
[   36.892031][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   36.892408][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   36.892714][  T227] PKRU: 55555554
[   36.892857][  T227] Call Trace:
[   36.893006][  T227]  <TASK>
[ 36.893197][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 36.893402][ T227] ? __warn (kernel/panic.c:748) 
[ 36.893559][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 36.893760][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 36.893967][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 36.894190][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 36.894392][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 36.894602][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 36.894801][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 36.895041][ 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) 
[ 36.895244][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 36.895438][ T227] register_netdevice (net/core/dev.c:11003) 
[ 36.895635][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 36.895834][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 36.896037][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 36.896293][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 36.896567][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 36.896812][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 36.897005][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 36.897214][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 36.897459][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 36.897643][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 36.897831][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 36.898025][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 36.898243][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 36.898410][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 36.898604][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 36.898800][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 36.899010][ T227] ksys_write (fs/read_write.c:731) 
[ 36.899171][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 36.899368][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 36.899570][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   36.899806][  T227] RIP: 0033:0x7f839b073b77
[ 36.899996][ 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
[   36.900665][  T227] RSP: 002b:00007ffce19f17c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   36.900960][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f839b073b77
[   36.901243][  T227] RDX: 0000000000000002 RSI: 000055d38ca80330 RDI: 0000000000000001
[   36.901532][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   36.901809][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000002
[   36.902103][  T227] R13: 00007f839b12f760 R14: 0000000000000002 R15: 00007f839b12a9c0
| [   48.211637][  T227] ------------[ cut here ]------------
| [ 48.212064][ 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) 
| [   48.212519][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   48.213394][  T227] Tainted: [W]=WARN
[   48.213566][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 48.213839][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 48.214122][ 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
[   48.214935][  T227] RSP: 0018:ffffc90000b37520 EFLAGS: 00010246
[   48.215219][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   48.215542][  T227] RDX: 0000000000000000 RSI: ffff888005172c98 RDI: ffff88800a530b78
[   48.215865][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   48.216191][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   48.216510][  T227] R13: ffff888005172128 R14: ffff888005172008 R15: ffff888005172000
[   48.216821][  T227] FS:  00007f839af32740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   48.217198][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   48.217468][  T227] CR2: 00007f4b5e52d5a0 CR3: 0000000005936003 CR4: 0000000000772ef0
[   48.217783][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   48.218108][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   48.218425][  T227] PKRU: 55555554
[   48.218592][  T227] Call Trace:
[   48.218759][  T227]  <TASK>
[ 48.218882][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 48.219113][ T227] ? __warn (kernel/panic.c:748) 
[ 48.219285][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 48.219505][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 48.219729][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 48.219903][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 48.220130][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 48.220367][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 48.220595][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 48.220870][ 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) 
[ 48.221103][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 48.221331][ T227] register_netdevice (net/core/dev.c:11003) 
[ 48.221553][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 48.221783][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 48.222018][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 48.222304][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 48.222483][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 48.222767][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 48.223045][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 48.223331][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 48.223562][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 48.223838][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 48.224061][ 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)) 
[ 48.224242][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 48.224477][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 48.224705][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 48.224928][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 48.225158][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 48.225381][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 48.225645][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 48.225867][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 48.226083][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 48.226335][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 48.226549][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 48.226774][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 48.226989][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 48.227216][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 48.227433][ 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) 
[ 48.227659][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 48.227882][ T227] device_add (drivers/base/core.c:3672) 
[ 48.228111][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 48.228328][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 48.228561][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 48.228837][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 48.229127][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 48.229343][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 48.229569][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 48.229785][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 48.230007][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 48.230195][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 48.230415][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 48.230642][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 48.230865][ T227] ksys_write (fs/read_write.c:731) 
[ 48.231043][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 48.231281][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 48.231501][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   48.231764][  T227] RIP: 0033:0x7f839b073b77
[ 48.231986][ 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
[   48.232721][  T227] RSP: 002b:00007ffce19f3d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   48.233037][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f839b073b77
[   48.233364][  T227] RDX: 0000000000000004 RSI: 000055d38ca80330 RDI: 0000000000000001
[   48.233680][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   48.233996][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000004
[   48.234319][  T227] R13: 00007f839b12f760 R14: 0000000000000004 R15: 00007f839b12a9c0
| [   48.284165][  T227] ------------[ cut here ]------------
| [ 48.284457][ 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) 
| [   48.284823][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   48.285609][  T227] Tainted: [W]=WARN
[   48.285752][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 48.285979][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 48.286224][ 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
[   48.286860][  T227] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[   48.287104][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   48.287377][  T227] RDX: 0000000000000000 RSI: ffff888004fa2c98 RDI: ffff88800a530b28
[   48.287649][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   48.287925][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   48.288224][  T227] R13: ffff888004fa2128 R14: ffff888004fa2008 R15: ffff888004fa2000
[   48.288493][  T227] FS:  00007f839af32740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   48.288805][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   48.289033][  T227] CR2: 00007ffce19f1ff8 CR3: 0000000005936003 CR4: 0000000000772ef0
[   48.289322][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   48.289703][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   48.289974][  T227] PKRU: 55555554
[   48.290124][  T227] Call Trace:
[   48.290265][  T227]  <TASK>
[ 48.290362][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 48.290555][ T227] ? __warn (kernel/panic.c:748) 
[ 48.290696][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 48.290881][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 48.291071][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 48.291225][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 48.291408][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 48.291603][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 48.291796][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 48.292034][ 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) 
[ 48.292233][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 48.292429][ T227] register_netdevice (net/core/dev.c:11003) 
[ 48.292620][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 48.292814][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 48.293015][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 48.293271][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 48.293526][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 48.293764][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 48.293951][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 48.294156][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 48.294393][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 48.294583][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 48.294769][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 48.294957][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 48.295161][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 48.295312][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 48.295501][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 48.295696][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 48.295893][ T227] ksys_write (fs/read_write.c:731) 
[ 48.296035][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 48.296242][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 48.296428][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   48.296651][  T227] RIP: 0033:0x7f839b073b77
[ 48.296846][ T227] Code: Unable to access opcode bytes at 0x7f839b073b4d.

Code starting with the faulting instruction
===========================================
[   48.297110][  T227] RSP: 002b:00007ffce19f17c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   48.297389][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f839b073b77
[   48.297662][  T227] RDX: 0000000000000002 RSI: 000055d38ca80330 RDI: 0000000000000001
[   48.297954][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   48.298261][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000002
[   48.298537][  T227] R13: 00007f839b12f760 R14: 0000000000000002 R15: 00007f839b12a9c0
| [   59.775271][  T227] ------------[ cut here ]------------
| [ 59.775572][ 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) 
| [   59.775949][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   59.776745][  T227] Tainted: [W]=WARN
[   59.776888][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 59.777131][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 59.777365][ 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
[   59.778012][  T227] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[   59.778260][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   59.778539][  T227] RDX: 0000000000000000 RSI: ffff88801423ac98 RDI: ffff88800a530b28
[   59.778818][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   59.779105][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   59.779381][  T227] R13: ffff88801423a128 R14: ffff88801423a008 R15: ffff88801423a000
[   59.779658][  T227] FS:  00007f839af32740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   59.779982][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   59.780229][  T227] CR2: 00007ffce19f0fb0 CR3: 0000000005936001 CR4: 0000000000772ef0
[   59.780509][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   59.780787][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   59.781061][  T227] PKRU: 55555554
[   59.781208][  T227] Call Trace:
[   59.781352][  T227]  <TASK>
[ 59.781450][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 59.781633][ T227] ? __warn (kernel/panic.c:748) 
[ 59.781776][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 59.781962][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 59.782168][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 59.782328][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 59.782517][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 59.782716][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 59.782912][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 59.783160][ 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) 
[ 59.783352][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 59.783543][ T227] register_netdevice (net/core/dev.c:11003) 
[ 59.783733][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 59.783937][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 59.784147][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 59.784388][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 59.784646][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 59.784884][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 59.785070][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 59.785275][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 59.785514][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 59.785699][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 59.785884][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 59.786074][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 59.786276][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 59.786426][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 59.786618][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 59.786811][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 59.787009][ T227] ksys_write (fs/read_write.c:731) 
[ 59.787161][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 59.787361][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 59.787550][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   59.787780][  T227] RIP: 0033:0x7f839b073b77
[ 59.787968][ 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
[   59.788620][  T227] RSP: 002b:00007ffce19f17c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   59.788900][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f839b073b77
[   59.789184][  T227] RDX: 0000000000000002 RSI: 000055d38ca80330 RDI: 0000000000000001
[   59.789458][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   59.789739][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000002
[   59.790008][  T227] R13: 00007f839b12f760 R14: 0000000000000002 R15: 00007f839b12a9c0
| [   71.181632][  T227] ------------[ cut here ]------------
| [ 71.182021][ 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) 
| [   71.182466][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   71.183312][  T227] Tainted: [W]=WARN
[   71.183469][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 71.183727][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 71.183994][ 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
[   71.184707][  T227] RSP: 0018:ffffc90000b37520 EFLAGS: 00010246
[   71.184965][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   71.185277][  T227] RDX: 0000000000000000 RSI: ffff888005f52c98 RDI: ffff88800a530b78
[   71.185584][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   71.185884][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   71.186286][  T227] R13: ffff888005f52128 R14: ffff888005f52008 R15: ffff888005f52000
[   71.186592][  T227] FS:  00007f839af32740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   71.186943][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   71.187210][  T227] CR2: 00007f839afb7440 CR3: 0000000005936003 CR4: 0000000000772ef0
[   71.187514][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   71.187815][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   71.188145][  T227] PKRU: 55555554
[   71.188302][  T227] Call Trace:
[   71.188458][  T227]  <TASK>
[ 71.188565][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 71.188774][ T227] ? __warn (kernel/panic.c:748) 
[ 71.188931][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 71.189238][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 71.189450][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 71.189609][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 71.189813][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 71.190031][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 71.190338][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 71.190599][ 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) 
[ 71.190822][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 71.191032][ T227] register_netdevice (net/core/dev.c:11003) 
[ 71.191337][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 71.191556][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 71.191776][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 71.192037][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 71.192310][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 71.192583][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 71.192844][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 71.193201][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 71.193418][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 71.193676][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 71.193892][ 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)) 
[ 71.194052][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 71.194335][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 71.194547][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 71.194757][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 71.194964][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 71.195183][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 71.195436][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 71.195646][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 71.195847][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 71.196052][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 71.196276][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 71.196491][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 71.196695][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 71.196899][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 71.197118][ 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) 
[ 71.197333][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 71.197542][ T227] device_add (drivers/base/core.c:3672) 
[ 71.197750][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 71.197955][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 71.198181][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 71.198449][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 71.198742][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 71.198947][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 71.199168][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 71.199374][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 71.199583][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 71.199747][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 71.199955][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 71.200198][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 71.200412][ T227] ksys_write (fs/read_write.c:731) 
[ 71.200568][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 71.200786][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 71.200992][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   71.201252][  T227] RIP: 0033:0x7f839b073b77
[ 71.201463][ 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
[   71.202173][  T227] RSP: 002b:00007ffce19f3d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   71.202492][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f839b073b77
[   71.202792][  T227] RDX: 0000000000000004 RSI: 000055d38ca80330 RDI: 0000000000000001
[   71.203109][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   71.203411][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000004
[   71.203712][  T227] R13: 00007f839b12f760 R14: 0000000000000004 R15: 00007f839b12a9c0
| [   71.251850][  T227] ------------[ cut here ]------------
| [ 71.252148][ 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) 
| [   71.252526][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   71.253288][  T227] Tainted: [W]=WARN
[   71.253429][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 71.253660][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 71.253902][ 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
[   71.254567][  T227] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[   71.254802][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   71.255076][  T227] RDX: 0000000000000000 RSI: ffff888005172c98 RDI: ffff88800a530b28
[   71.255355][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   71.255634][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   71.255904][  T227] R13: ffff888005172128 R14: ffff888005172008 R15: ffff888005172000
[   71.256184][  T227] FS:  00007f839af32740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   71.256589][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   71.256822][  T227] CR2: 00007f4b5e52d5a0 CR3: 0000000005936004 CR4: 0000000000772ef0
[   71.257115][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   71.257387][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   71.257656][  T227] PKRU: 55555554
[   71.257795][  T227] Call Trace:
[   71.257934][  T227]  <TASK>
[ 71.258034][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 71.258227][ T227] ? __warn (kernel/panic.c:748) 
[ 71.258370][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 71.258556][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 71.258748][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 71.258888][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 71.259072][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 71.259277][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 71.259477][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 71.259714][ 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) 
[ 71.259909][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 71.260243][ T227] register_netdevice (net/core/dev.c:11003) 
[ 71.260434][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 71.260631][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 71.260835][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 71.261075][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 71.261348][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 71.261712][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 71.261902][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 71.262110][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 71.262361][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 71.262544][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 71.262840][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 71.263030][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 71.263231][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 71.263383][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 71.263572][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 71.263772][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 71.263965][ T227] ksys_write (fs/read_write.c:731) 
[ 71.264223][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 71.264423][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 71.264611][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   71.264946][  T227] RIP: 0033:0x7f839b073b77
[ 71.265147][ 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
[   71.265903][  T227] RSP: 002b:00007ffce19f30b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   71.266188][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f839b073b77
[   71.266568][  T227] RDX: 0000000000000002 RSI: 000055d38ca80330 RDI: 0000000000000001
[   71.266842][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   71.267229][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000002
[   71.267612][  T227] R13: 00007f839b12f760 R14: 0000000000000002 R15: 00007f839b12a9c0
| [   77.804897][  T227] ------------[ cut here ]------------
| [ 77.805339][ 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) 
| [   77.805734][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   77.806541][  T227] Tainted: [W]=WARN
[   77.806699][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 77.806945][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 77.807210][ 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
[   77.807875][  T227] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[   77.808141][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   77.808431][  T227] RDX: 0000000000000000 RSI: ffff888004fa2c98 RDI: ffff88800a530b28
[   77.808734][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   77.809024][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   77.809331][  T227] R13: ffff888004fa2128 R14: ffff888004fa2008 R15: ffff888004fa2000
[   77.809626][  T227] FS:  00007f839af32740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   77.809963][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   77.810221][  T227] CR2: 00007f4b5e71da00 CR3: 0000000005936001 CR4: 0000000000772ef0
[   77.810513][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   77.810806][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   77.811110][  T227] PKRU: 55555554
[   77.811266][  T227] Call Trace:
[   77.811418][  T227]  <TASK>
[ 77.811530][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 77.811736][ T227] ? __warn (kernel/panic.c:748) 
[ 77.811895][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 77.812110][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 77.812334][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 77.812494][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 77.812699][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 77.812918][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 77.813135][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 77.813391][ 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) 
[ 77.813598][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 77.813803][ T227] register_netdevice (net/core/dev.c:11003) 
[ 77.814016][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 77.814243][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 77.814460][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 77.814724][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 77.814995][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 77.815261][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 77.815463][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 77.815678][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 77.815939][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 77.816151][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 77.816352][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 77.816557][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 77.816761][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 77.816927][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 77.817144][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 77.817351][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 77.817560][ T227] ksys_write (fs/read_write.c:731) 
[ 77.817723][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 77.817944][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 77.818166][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   77.818407][  T227] RIP: 0033:0x7f839b073b77
[ 77.818609][ 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
[   77.819277][  T227] RSP: 002b:00007ffce19f30b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   77.819568][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f839b073b77
[   77.819854][  T227] RDX: 0000000000000002 RSI: 000055d38ca80330 RDI: 0000000000000001
[   77.820145][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   77.820434][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000002
[   77.820718][  T227] R13: 00007f839b12f760 R14: 0000000000000002 R15: 00007f839b12a9c0
| [   84.433942][  T227] ------------[ cut here ]------------
| [ 84.434812][ 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) 
| [   84.435237][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   84.436065][  T227] Tainted: [W]=WARN
[   84.436235][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 84.436489][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 84.436746][ 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
[   84.437476][  T227] RSP: 0018:ffffc90000b37520 EFLAGS: 00010246
[   84.437734][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   84.438032][  T227] RDX: 0000000000000000 RSI: ffff88801423ac98 RDI: ffff88800a530b78
[   84.438344][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   84.438651][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   84.438953][  T227] R13: ffff88801423a128 R14: ffff88801423a008 R15: ffff88801423a000
[   84.439268][  T227] FS:  00007f839af32740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   84.439619][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   84.439968][  T227] CR2: 00007f839afb7440 CR3: 0000000005936002 CR4: 0000000000772ef0
[   84.440286][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   84.440590][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   84.440896][  T227] PKRU: 55555554
[   84.441049][  T227] Call Trace:
[   84.441226][  T227]  <TASK>
[ 84.441334][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 84.441541][ T227] ? __warn (kernel/panic.c:748) 
[ 84.441700][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 84.441907][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 84.442125][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 84.442291][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 84.442493][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 84.442707][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 84.442922][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 84.443198][ 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) 
[ 84.443410][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 84.443621][ T227] register_netdevice (net/core/dev.c:11003) 
[ 84.443834][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 84.444049][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 84.444280][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 84.444540][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 84.444701][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 84.444970][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 84.445255][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 84.445522][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 84.445737][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 84.445994][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 84.446212][ 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)) 
[ 84.446369][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 84.446582][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 84.446794][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 84.447004][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 84.447217][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 84.447425][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 84.447682][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 84.447888][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 84.448100][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 84.448328][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 84.448530][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 84.448739][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 84.448941][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 84.449166][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 84.449369][ 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) 
[ 84.449581][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 84.449793][ T227] device_add (drivers/base/core.c:3672) 
[ 84.450000][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 84.450212][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 84.450429][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 84.450690][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 84.450954][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 84.451166][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 84.451384][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 84.451594][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 84.451803][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 84.451965][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 84.452193][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 84.452406][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 84.452617][ T227] ksys_write (fs/read_write.c:731) 
[ 84.452778][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 84.452992][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 84.453219][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   84.453472][  T227] RIP: 0033:0x7f839b073b77
[ 84.453680][ 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
[   84.454393][  T227] RSP: 002b:00007ffce19f3d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   84.454698][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f839b073b77
[   84.455000][  T227] RDX: 0000000000000004 RSI: 000055d38ca80330 RDI: 0000000000000001
[   84.455310][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   84.455613][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000004
[   84.455911][  T227] R13: 00007f839b12f760 R14: 0000000000000004 R15: 00007f839b12a9c0
| [   84.502524][  T227] ------------[ cut here ]------------
| [ 84.502824][ 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) 
| [   84.503208][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   84.503955][  T227] Tainted: [W]=WARN
[   84.504119][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 84.504349][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 84.504584][ 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
[   84.505242][  T227] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[   84.505473][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   84.505741][  T227] RDX: 0000000000000000 RSI: ffff888005f52c98 RDI: ffff88800a530b28
[   84.506012][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   84.506368][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   84.506638][  T227] R13: ffff888005f52128 R14: ffff888005f52008 R15: ffff888005f52000
[   84.506912][  T227] FS:  00007f839af32740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   84.507316][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   84.507551][  T227] CR2: 00007ffce19f0eb0 CR3: 0000000005936002 CR4: 0000000000772ef0
[   84.507822][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   84.508172][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   84.508442][  T227] PKRU: 55555554
[   84.508578][  T227] Call Trace:
[   84.508719][  T227]  <TASK>
[ 84.508815][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 84.508997][ T227] ? __warn (kernel/panic.c:748) 
[ 84.509311][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 84.509500][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 84.509691][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 84.509834][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 84.510015][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 84.510302][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 84.510496][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 84.510728][ 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) 
[ 84.510916][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 84.511183][ T227] register_netdevice (net/core/dev.c:11003) 
[ 84.511372][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 84.511565][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 84.511769][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 84.512005][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 84.512344][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 84.512583][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 84.512770][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 84.512962][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 84.513284][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 84.513469][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 84.513653][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 84.513840][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 84.514027][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 84.514254][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 84.514444][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 84.514632][ 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) 
[ 84.514824][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 84.515015][ T227] ksys_write (fs/read_write.c:731) 
[ 84.515182][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 84.515362][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 84.515554][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 84.515741][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   84.515962][  T227] RIP: 0033:0x7f839b073b77
[ 84.516199][ 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
[   84.516833][  T227] RSP: 002b:00007ffce19f1438 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   84.517116][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f839b073b77
[   84.517394][  T227] RDX: 0000000000000002 RSI: 000055d38ca80330 RDI: 0000000000000001
[   84.517668][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   84.517936][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000002
[   84.518216][  T227] R13: 00007f839b12f760 R14: 0000000000000002 R15: 00007f839b12a9c0
| [   86.920219][  T227] ------------[ cut here ]------------
| [ 86.920533][ 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) 
| [   86.920905][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   86.921723][  T227] Tainted: [W]=WARN
[   86.921870][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 86.922124][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 86.922375][ 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
[   86.923025][  T227] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[   86.923275][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   86.923552][  T227] RDX: 0000000000000000 RSI: ffff888005172c98 RDI: ffff88800a530b28
[   86.923833][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   86.924121][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   86.924400][  T227] R13: ffff888005172128 R14: ffff888005172008 R15: ffff888005172000
[   86.924680][  T227] FS:  00007f839af32740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   86.925006][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   86.925250][  T227] CR2: 00007ffce19f4008 CR3: 0000000005936003 CR4: 0000000000772ef0
[   86.925529][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   86.925805][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   86.926085][  T227] PKRU: 55555554
[   86.926238][  T227] Call Trace:
[   86.926382][  T227]  <TASK>
[ 86.926481][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 86.926670][ T227] ? __warn (kernel/panic.c:748) 
[ 86.926815][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 86.927002][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 86.927205][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 86.927348][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 86.927535][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 86.927737][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 86.927933][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 86.928182][ 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) 
[ 86.928379][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 86.928569][ T227] register_netdevice (net/core/dev.c:11003) 
[ 86.928765][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 86.928972][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 86.929187][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 86.929430][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 86.929685][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 86.929928][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 86.930128][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 86.930324][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 86.930566][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 86.930751][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 86.930940][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 86.931140][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 86.931334][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 86.931493][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 86.931683][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 86.931891][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 86.932103][ T227] ksys_write (fs/read_write.c:731) 
[ 86.932261][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 86.932459][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 86.932646][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   86.932871][  T227] RIP: 0033:0x7f839b073b77
[ 86.933067][ 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
[   86.933705][  T227] RSP: 002b:00007ffce19f1438 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   86.933979][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f839b073b77
[   86.934264][  T227] RDX: 0000000000000002 RSI: 000055d38ca80330 RDI: 0000000000000001
[   86.934534][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   86.934804][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000002
[   86.935072][  T227] R13: 00007f839b12f760 R14: 0000000000000002 R15: 00007f839b12a9c0
| [   89.253856][  T227] ------------[ cut here ]------------
| [ 89.254283][ 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) 
| [   89.254693][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   89.255625][  T227] Tainted: [W]=WARN
[   89.255782][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 89.256035][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 89.256308][ 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
[   89.257015][  T227] RSP: 0018:ffffc90000b37520 EFLAGS: 00010246
[   89.257289][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   89.257594][  T227] RDX: 0000000000000000 RSI: ffff888004fa2c98 RDI: ffff88800a530b78
[   89.257896][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   89.258208][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   89.258513][  T227] R13: ffff888004fa2128 R14: ffff888004fa2008 R15: ffff888004fa2000
[   89.258817][  T227] FS:  00007f839af32740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   89.259182][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   89.259436][  T227] CR2: 000055d38ca57000 CR3: 0000000005936006 CR4: 0000000000772ef0
[   89.259741][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   89.260042][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   89.260352][  T227] PKRU: 55555554
[   89.260511][  T227] Call Trace:
[   89.260666][  T227]  <TASK>
[ 89.260772][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 89.260979][ T227] ? __warn (kernel/panic.c:748) 
[ 89.261149][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 89.261357][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 89.261567][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 89.261722][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 89.261926][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 89.262165][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 89.262385][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 89.262646][ 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) 
[ 89.262858][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 89.263071][ T227] register_netdevice (net/core/dev.c:11003) 
[ 89.263292][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 89.263512][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 89.263732][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 89.263992][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 89.264162][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 89.264432][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 89.264694][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 89.264957][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 89.265187][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 89.265498][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 89.265710][ 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)) 
[ 89.265869][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 89.266103][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 89.266316][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 89.266523][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 89.266728][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 89.266938][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 89.267202][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 89.267413][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 89.267616][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 89.267823][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 89.268030][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 89.268258][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 89.268463][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 89.268666][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 89.268872][ 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) 
[ 89.269097][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 89.269305][ T227] device_add (drivers/base/core.c:3672) 
[ 89.269538][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 89.269746][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 89.269962][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 89.270238][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 89.270505][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 89.270708][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 89.270918][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 89.271133][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 89.271345][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 89.271507][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 89.271714][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 89.271926][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 89.272155][ T227] ksys_write (fs/read_write.c:731) 
[ 89.272316][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 89.272533][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 89.272747][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   89.272997][  T227] RIP: 0033:0x7f839b073b77
[ 89.273216][ 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
[   89.273917][  T227] RSP: 002b:00007ffce19f3d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   89.274239][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f839b073b77
[   89.274539][  T227] RDX: 0000000000000004 RSI: 000055d38ca80330 RDI: 0000000000000001
[   89.274837][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   89.275146][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000004
[   89.275449][  T227] R13: 00007f839b12f760 R14: 0000000000000004 R15: 00007f839b12a9c0
| [   89.317800][  T227] ------------[ cut here ]------------
| [ 89.318249][ 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) 
| [   89.318620][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   89.319383][  T227] Tainted: [W]=WARN
[   89.319524][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 89.319767][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 89.319999][ 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
[   89.320640][  T227] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[   89.320878][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   89.321155][  T227] RDX: 0000000000000000 RSI: ffff88801423ac98 RDI: ffff88800a530b28
[   89.321425][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   89.321695][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   89.321965][  T227] R13: ffff88801423a128 R14: ffff88801423a008 R15: ffff88801423a000
[   89.322262][  T227] FS:  00007f839af32740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   89.322577][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   89.322805][  T227] CR2: 000055d38ca57000 CR3: 0000000005936006 CR4: 0000000000772ef0
[   89.323074][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   89.323360][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   89.323632][  T227] PKRU: 55555554
[   89.323770][  T227] Call Trace:
[   89.324003][  T227]  <TASK>
[ 89.324110][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 89.324296][ T227] ? __warn (kernel/panic.c:748) 
[ 89.324437][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 89.324629][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 89.324822][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 89.324965][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 89.325158][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 89.325370][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 89.325601][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 89.325834][ 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) 
[ 89.326023][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 89.326236][ T227] register_netdevice (net/core/dev.c:11003) 
[ 89.326435][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 89.326627][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 89.326825][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 89.327065][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 89.327330][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 89.327567][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 89.327757][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 89.327950][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 89.328193][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 89.328383][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 89.328566][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 89.328753][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 89.328940][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 89.329102][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 89.329290][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 89.329481][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 89.329673][ T227] ksys_write (fs/read_write.c:731) 
[ 89.329816][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 89.330011][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 89.330205][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   89.330432][  T227] RIP: 0033:0x7f839b073b77
[ 89.330629][ 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
[   89.331272][  T227] RSP: 002b:00007ffce19f18f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   89.331544][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f839b073b77
[   89.331815][  T227] RDX: 0000000000000002 RSI: 000055d38ca80330 RDI: 0000000000000001
[   89.332083][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   89.332375][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000002
[   89.332644][  T227] R13: 00007f839b12f760 R14: 0000000000000002 R15: 00007f839b12a9c0
| [   91.582407][  T227] ------------[ cut here ]------------
| [ 91.582658][ 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) 
| [   91.583040][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   91.583965][  T227] Tainted: [W]=WARN
[   91.584156][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 91.584392][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 91.584637][ 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
[   91.585296][  T227] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[   91.585541][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   91.585816][  T227] RDX: 0000000000000000 RSI: ffff888005f52c98 RDI: ffff88800a530b28
[   91.586107][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   91.586386][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   91.586667][  T227] R13: ffff888005f52128 R14: ffff888005f52008 R15: ffff888005f52000
[   91.586948][  T227] FS:  00007f839af32740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   91.587275][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   91.587515][  T227] CR2: 00007f839afb7440 CR3: 0000000005936002 CR4: 0000000000772ef0
[   91.587796][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   91.588072][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   91.588358][  T227] PKRU: 55555554
[   91.588503][  T227] Call Trace:
[   91.588647][  T227]  <TASK>
[ 91.588745][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 91.588931][ T227] ? __warn (kernel/panic.c:748) 
[ 91.589075][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 91.589276][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 91.589472][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 91.589619][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 91.589808][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 91.590008][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 91.590212][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 91.590453][ 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) 
[ 91.590644][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 91.590836][ T227] register_netdevice (net/core/dev.c:11003) 
[ 91.591027][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 91.591235][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 91.591441][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 91.591685][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 91.591942][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 91.592203][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 91.592395][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 91.592590][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 91.592828][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 91.593019][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 91.593218][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 91.593407][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 91.593603][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 91.593756][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 91.593952][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 91.594154][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 91.594350][ T227] ksys_write (fs/read_write.c:731) 
[ 91.594493][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 91.594687][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 91.594874][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   91.595109][  T227] RIP: 0033:0x7f839b073b77
[ 91.595305][ 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
[   91.595934][  T227] RSP: 002b:00007ffce19f18f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   91.596219][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f839b073b77
[   91.596494][  T227] RDX: 0000000000000002 RSI: 000055d38ca80330 RDI: 0000000000000001
[   91.596763][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   91.597032][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000002
[   91.597312][  T227] R13: 00007f839b12f760 R14: 0000000000000002 R15: 00007f839b12a9c0
| [   93.719272][  T227] ------------[ cut here ]------------
| [ 93.719594][ 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) 
| [   93.719999][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   93.720863][  T227] Tainted: [W]=WARN
[   93.721019][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 93.722369][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 93.722637][ 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
[   93.723476][  T227] RSP: 0018:ffffc90000b37520 EFLAGS: 00010246
[   93.723737][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   93.724039][  T227] RDX: 0000000000000000 RSI: ffff888005172c98 RDI: ffff88800a530b78
[   93.724554][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   93.724860][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   93.725325][  T227] R13: ffff888005172128 R14: ffff888005172008 R15: ffff888005172000
[   93.725632][  T227] FS:  00007f839af32740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   93.725981][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   93.726245][  T227] CR2: 0000563be469db80 CR3: 0000000005936006 CR4: 0000000000772ef0
[   93.726552][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   93.726854][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   93.727168][  T227] PKRU: 55555554
[   93.727325][  T227] Call Trace:
[   93.727483][  T227]  <TASK>
[ 93.727593][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 93.727797][ T227] ? __warn (kernel/panic.c:748) 
[ 93.727956][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 93.728178][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 93.728395][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 93.728551][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 93.728756][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 93.728973][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 93.729196][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 93.729458][ 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) 
[ 93.729669][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 93.729880][ T227] register_netdevice (net/core/dev.c:11003) 
[ 93.730100][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 93.730318][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 93.730538][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 93.730799][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 93.730955][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 93.731238][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 93.731504][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 93.731770][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 93.731986][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 93.732265][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 93.732478][ 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)) 
[ 93.732634][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 93.732848][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 93.733060][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 93.733279][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 93.733511][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 93.733719][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 93.733968][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 93.734183][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 93.734384][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 93.734588][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 93.734792][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 93.735007][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 93.735220][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 93.735424][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 93.735628][ 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) 
[ 93.735843][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 93.736048][ T227] device_add (drivers/base/core.c:3672) 
[ 93.736264][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 93.736466][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 93.736683][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 93.736947][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 93.737260][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 93.737482][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 93.737692][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 93.737895][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 93.738125][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 93.738289][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 93.738497][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 93.738711][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 93.738924][ T227] ksys_write (fs/read_write.c:731) 
[ 93.739080][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 93.739308][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 93.739515][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   93.739767][  T227] RIP: 0033:0x7f839b073b77
[ 93.739974][ 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
[   93.740679][  T227] RSP: 002b:00007ffce19f3d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   93.740989][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f839b073b77
[   93.741296][  T227] RDX: 0000000000000004 RSI: 000055d38ca80330 RDI: 0000000000000001
[   93.741597][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   93.741895][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000004
[   93.742213][  T227] R13: 00007f839b12f760 R14: 0000000000000004 R15: 00007f839b12a9c0
| [   93.776060][  T227] ------------[ cut here ]------------
| [ 93.777474][ 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) 
| [   93.777872][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   93.778672][  T227] Tainted: [W]=WARN
[   93.778826][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 93.779066][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 93.779326][ 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
[   93.779969][  T227] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[   93.780224][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   93.780502][  T227] RDX: 0000000000000000 RSI: ffff888004fa2c98 RDI: ffff88800a530b28
[   93.780788][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   93.781068][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   93.781363][  T227] R13: ffff888004fa2128 R14: ffff888004fa2008 R15: ffff888004fa2000
[   93.781647][  T227] FS:  00007f839af32740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   93.781977][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   93.782244][  T227] CR2: 00007ffce19f0eb0 CR3: 0000000005936006 CR4: 0000000000772ef0
[   93.782529][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   93.782809][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   93.783098][  T227] PKRU: 55555554
[   93.783347][  T227] Call Trace:
[   93.783500][  T227]  <TASK>
[ 93.783608][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 93.783810][ T227] ? __warn (kernel/panic.c:748) 
[ 93.783966][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 93.784174][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 93.784382][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 93.784541][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 93.784739][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 93.784945][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 93.785168][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 93.785419][ 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) 
[ 93.785622][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 93.785822][ T227] register_netdevice (net/core/dev.c:11003) 
[ 93.786027][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 93.786244][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 93.786464][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 93.786717][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 93.786983][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 93.787249][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 93.787450][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 93.787656][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 93.787910][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 93.788117][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 93.788317][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 93.788517][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 93.788719][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 93.788883][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 93.789083][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 93.789292][ 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) 
[ 93.789502][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 93.789710][ T227] ksys_write (fs/read_write.c:731) 
[ 93.789867][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 93.790061][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 93.790276][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 93.790474][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   93.790713][  T227] RIP: 0033:0x7f839b073b77
[ 93.790917][ 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
[   93.791568][  T227] RSP: 002b:00007ffce19f1438 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   93.791853][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f839b073b77
[   93.792159][  T227] RDX: 0000000000000002 RSI: 000055d38ca80330 RDI: 0000000000000001
[   93.792447][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   93.792730][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000002
[   93.793159][  T227] R13: 00007f839b12f760 R14: 0000000000000002 R15: 00007f839b12a9c0
| [   95.821243][  T227] ------------[ cut here ]------------
| [ 95.821548][ 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) 
| [   95.821920][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   95.822701][  T227] Tainted: [W]=WARN
[   95.822846][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 95.823080][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 95.823332][ 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
[   95.823975][  T227] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[   95.824219][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   95.824493][  T227] RDX: 0000000000000000 RSI: ffff88801423ac98 RDI: ffff88800a530b28
[   95.824766][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   95.825084][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   95.825366][  T227] R13: ffff88801423a128 R14: ffff88801423a008 R15: ffff88801423a000
[   95.825634][  T227] FS:  00007f839af32740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   95.825948][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   95.826271][  T227] CR2: 00007ffce19f4008 CR3: 0000000005936004 CR4: 0000000000772ef0
[   95.826544][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   95.826818][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   95.827171][  T227] PKRU: 55555554
[   95.827312][  T227] Call Trace:
[   95.827449][  T227]  <TASK>
[ 95.827546][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 95.827729][ T227] ? __warn (kernel/panic.c:748) 
[ 95.827874][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 95.828062][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 95.828335][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 95.828478][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 95.828663][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 95.828858][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 95.829048][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 95.829363][ 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) 
[ 95.829556][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 95.829744][ T227] register_netdevice (net/core/dev.c:11003) 
[ 95.829931][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 95.830191][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 95.830391][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 95.830626][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 95.830881][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 95.831130][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 95.831315][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 95.831513][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 95.831750][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 95.831931][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 95.832141][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 95.832340][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 95.832533][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 95.832683][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 95.832874][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 95.833067][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 95.833271][ T227] ksys_write (fs/read_write.c:731) 
[ 95.833417][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 95.833617][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 95.833802][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   95.834027][  T227] RIP: 0033:0x7f839b073b77
[ 95.834229][ 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
[   95.834864][  T227] RSP: 002b:00007ffce19f1438 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   95.835151][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f839b073b77
[   95.835428][  T227] RDX: 0000000000000002 RSI: 000055d38ca80330 RDI: 0000000000000001
[   95.835703][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   95.836019][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000002
[   95.836303][  T227] R13: 00007f839b12f760 R14: 0000000000000002 R15: 00007f839b12a9c0
| [   97.757955][  T227] ------------[ cut here ]------------
| [ 97.758352][ 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) 
| [   97.758846][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   97.759688][  T227] Tainted: [W]=WARN
[   97.759842][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 97.760656][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 97.760920][ 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
[   97.761633][  T227] RSP: 0018:ffffc90000b37520 EFLAGS: 00010246
[   97.761889][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   97.762210][  T227] RDX: 0000000000000000 RSI: ffff888005f52c98 RDI: ffff88800a530b78
[   97.762516][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   97.762819][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   97.763134][  T227] R13: ffff888005f52128 R14: ffff888005f52008 R15: ffff888005f52000
[   97.763434][  T227] FS:  00007f839af32740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   97.763783][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   97.764038][  T227] CR2: 000055d38ca57000 CR3: 0000000005936003 CR4: 0000000000772ef0
[   97.764351][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   97.764653][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   97.764951][  T227] PKRU: 55555554
[   97.765113][  T227] Call Trace:
[   97.765269][  T227]  <TASK>
[ 97.765375][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 97.765577][ T227] ? __warn (kernel/panic.c:748) 
[ 97.765734][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 97.765943][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 97.766162][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 97.766318][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 97.766521][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 97.766741][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 97.766957][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 97.767225][ 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) 
[ 97.767436][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 97.767645][ T227] register_netdevice (net/core/dev.c:11003) 
[ 97.767854][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 97.768074][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 97.768312][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 97.768574][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 97.768733][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 97.769006][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 97.769273][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 97.769534][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 97.769748][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 97.770010][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 97.770227][ 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)) 
[ 97.770382][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 97.770594][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 97.770806][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 97.771012][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 97.771229][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 97.771439][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 97.771693][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 97.771897][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 97.772141][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 97.772347][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 97.772549][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 97.772759][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 97.772963][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 97.773171][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 97.773375][ 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) 
[ 97.773595][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 97.773801][ T227] device_add (drivers/base/core.c:3672) 
[ 97.774007][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 97.774217][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 97.774432][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 97.774692][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 97.774957][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 97.775171][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 97.775380][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 97.775581][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 97.775790][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 97.775952][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 97.776167][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 97.776377][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 97.776590][ T227] ksys_write (fs/read_write.c:731) 
[ 97.776750][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 97.776965][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 97.777178][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   97.777431][  T227] RIP: 0033:0x7f839b073b77
[ 97.777639][ 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
[   97.778347][  T227] RSP: 002b:00007ffce19f3d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   97.778650][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f839b073b77
[   97.778949][  T227] RDX: 0000000000000004 RSI: 000055d38ca80330 RDI: 0000000000000001
[   97.779255][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   97.779559][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000004
[   97.779856][  T227] R13: 00007f839b12f760 R14: 0000000000000004 R15: 00007f839b12a9c0
| [   97.830254][  T227] ------------[ cut here ]------------
| [ 97.830543][ 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) 
| [   97.830906][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   97.831665][  T227] Tainted: [W]=WARN
[   97.831806][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 97.832052][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 97.832313][ 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
[   97.832943][  T227] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[   97.833242][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   97.833514][  T227] RDX: 0000000000000000 RSI: ffff888005172c98 RDI: ffff88800a530b28
[   97.833782][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   97.834048][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   97.834347][  T227] R13: ffff888005172128 R14: ffff888005172008 R15: ffff888005172000
[   97.834618][  T227] FS:  00007f839af32740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   97.834928][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   97.835245][  T227] CR2: 000055d38ca57000 CR3: 0000000005936003 CR4: 0000000000772ef0
[   97.835517][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   97.835793][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   97.836062][  T227] PKRU: 55555554
[   97.836281][  T227] Call Trace:
[   97.836422][  T227]  <TASK>
[ 97.836517][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 97.836700][ T227] ? __warn (kernel/panic.c:748) 
[ 97.836841][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 97.837029][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 97.837417][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 97.837559][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 97.837740][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 97.837935][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 97.838222][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 97.838456][ 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) 
[ 97.838645][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 97.838833][ T227] register_netdevice (net/core/dev.c:11003) 
[ 97.839020][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 97.839300][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 97.839501][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 97.839736][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 97.839991][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 97.840313][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 97.840497][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 97.840688][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 97.840920][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 97.841183][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 97.841367][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 97.841556][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 97.841744][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 97.841892][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 97.842076][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 97.842314][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 97.842507][ T227] ksys_write (fs/read_write.c:731) 
[ 97.842646][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 97.842844][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 97.843028][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   97.843265][  T227] RIP: 0033:0x7f839b073b77
[ 97.843453][ 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
[   97.844079][  T227] RSP: 002b:00007ffce19f1698 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   97.844367][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f839b073b77
[   97.844635][  T227] RDX: 0000000000000002 RSI: 000055d38ca80330 RDI: 0000000000000001
[   97.844905][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   97.845183][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000002
[   97.845455][  T227] R13: 00007f839b12f760 R14: 0000000000000002 R15: 00007f839b12a9c0
| [   99.797348][  T227] ------------[ cut here ]------------
| [ 99.797572][ 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) 
| [   99.797941][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   99.799847][  T227] Tainted: [W]=WARN
[   99.799988][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 99.800383][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 99.800625][ 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
[   99.801417][  T227] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[   99.801657][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   99.801930][  T227] RDX: 0000000000000000 RSI: ffff888004fa2c98 RDI: ffff88800a530b28
[   99.802346][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[   99.802623][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[   99.802902][  T227] R13: ffff888004fa2128 R14: ffff888004fa2008 R15: ffff888004fa2000
[   99.803242][  T227] FS:  00007f839af32740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   99.803565][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   99.803801][  T227] CR2: 00007ffce19f4008 CR3: 0000000005936002 CR4: 0000000000772ef0
[   99.804080][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   99.804367][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   99.804643][  T227] PKRU: 55555554
[   99.804786][  T227] Call Trace:
[   99.804926][  T227]  <TASK>
[ 99.805024][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 99.805225][ T227] ? __warn (kernel/panic.c:748) 
[ 99.805376][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 99.805568][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 99.805764][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 99.805907][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 99.806103][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 99.806304][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 99.806499][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 99.806736][ 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) 
[ 99.806930][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 99.807138][ T227] register_netdevice (net/core/dev.c:11003) 
[ 99.807330][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 99.807527][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 99.807730][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 99.807969][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 99.808245][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 99.808491][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 99.808681][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 99.808877][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 99.809128][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 99.809313][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 99.809498][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 99.809687][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 99.809881][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 99.810031][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 99.810231][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 99.810430][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 99.810623][ T227] ksys_write (fs/read_write.c:731) 
[ 99.810765][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 99.810960][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 99.811164][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   99.811396][  T227] RIP: 0033:0x7f839b073b77
[ 99.811588][ 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
[   99.812301][  T227] RSP: 002b:00007ffce19f1698 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   99.812582][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f839b073b77
[   99.812853][  T227] RDX: 0000000000000002 RSI: 000055d38ca80330 RDI: 0000000000000001
[   99.813138][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[   99.813416][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000002
[   99.813687][  T227] R13: 00007f839b12f760 R14: 0000000000000002 R15: 00007f839b12a9c0
| [  101.438939][  T227] ------------[ cut here ]------------
| [ 101.439342][ 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) 
| [  101.439752][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  101.440867][  T227] Tainted: [W]=WARN
[  101.441020][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 101.441290][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 101.441550][ 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
[  101.442267][  T227] RSP: 0018:ffffc90000b37520 EFLAGS: 00010246
[  101.442523][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  101.442822][  T227] RDX: 0000000000000000 RSI: ffff88801423ac98 RDI: ffff88800a530b78
[  101.443139][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[  101.443443][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[  101.443744][  T227] R13: ffff88801423a128 R14: ffff88801423a008 R15: ffff88801423a000
[  101.444044][  T227] FS:  00007f839af32740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  101.444405][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  101.444657][  T227] CR2: 00007f4b5e71da00 CR3: 0000000005936002 CR4: 0000000000772ef0
[  101.444964][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  101.445276][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  101.445580][  T227] PKRU: 55555554
[  101.445733][  T227] Call Trace:
[  101.445886][  T227]  <TASK>
[ 101.445995][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 101.446211][ T227] ? __warn (kernel/panic.c:748) 
[ 101.446371][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 101.446577][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 101.446789][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 101.446954][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 101.447170][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 101.447390][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 101.447604][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 101.447863][ 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) 
[ 101.448077][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 101.448294][ T227] register_netdevice (net/core/dev.c:11003) 
[ 101.448507][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 101.448724][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 101.448949][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 101.449218][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 101.449380][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 101.449647][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 101.449910][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 101.450185][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 101.450402][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 101.450662][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 101.450869][ 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)) 
[ 101.451023][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 101.451245][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 101.451457][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 101.451665][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 101.451871][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 101.452079][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 101.452353][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 101.452557][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 101.452756][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 101.452959][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 101.453174][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 101.453383][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 101.453585][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 101.453795][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 101.454000][ 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) 
[ 101.454222][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 101.454430][ T227] device_add (drivers/base/core.c:3672) 
[ 101.454641][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 101.454842][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 101.455056][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 101.455331][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 101.455600][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 101.455825][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 101.456034][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 101.456248][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 101.456458][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 101.456620][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 101.456828][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 101.457039][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 101.457264][ T227] ksys_write (fs/read_write.c:731) 
[ 101.457421][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 101.457636][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 101.457841][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  101.458102][  T227] RIP: 0033:0x7f839b073b77
[ 101.458312][ 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
[  101.459013][  T227] RSP: 002b:00007ffce19f3d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  101.459328][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f839b073b77
[  101.459628][  T227] RDX: 0000000000000004 RSI: 000055d38ca80330 RDI: 0000000000000001
[  101.459934][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[  101.460242][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000004
[  101.460541][  T227] R13: 00007f839b12f760 R14: 0000000000000004 R15: 00007f839b12a9c0
| [  101.566394][  T227] ------------[ cut here ]------------
| [ 101.566696][ 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) 
| [  101.567078][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  101.568012][  T227] Tainted: [W]=WARN
[  101.568183][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 101.568414][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 101.568657][ 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
[  101.569315][  T227] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  101.569566][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  101.569845][  T227] RDX: 0000000000000000 RSI: ffff888005f52c98 RDI: ffff88800a530b28
[  101.570128][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[  101.570414][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[  101.570696][  T227] R13: ffff888005f52128 R14: ffff888005f52008 R15: ffff888005f52000
[  101.570976][  T227] FS:  00007f839af32740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  101.571304][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  101.571651][  T227] CR2: 000055d38ca80330 CR3: 0000000005936002 CR4: 0000000000772ef0
[  101.571930][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  101.572225][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  101.572504][  T227] PKRU: 55555554
[  101.572643][  T227] Call Trace:
[  101.572786][  T227]  <TASK>
[ 101.572883][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 101.573068][ T227] ? __warn (kernel/panic.c:748) 
[ 101.573226][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 101.573415][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 101.573611][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 101.573755][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 101.573946][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 101.574153][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 101.574355][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 101.574593][ 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) 
[ 101.574781][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 101.574978][ T227] register_netdevice (net/core/dev.c:11003) 
[ 101.575177][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 101.575374][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 101.575576][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 101.575823][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 101.576075][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 101.576332][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 101.576517][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 101.576715][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 101.576954][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 101.577149][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 101.577339][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 101.577523][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 101.577712][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 101.577874][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 101.578066][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 101.578261][ 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) 
[ 101.578456][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 101.578651][ T227] ksys_write (fs/read_write.c:731) 
[ 101.578793][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 101.578975][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 101.579181][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 101.579369][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  101.579594][  T227] RIP: 0033:0x7f839b073b77
[ 101.579785][ 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
[  101.580429][  T227] RSP: 002b:00007ffce19f3d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  101.580704][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f839b073b77
[  101.580981][  T227] RDX: 0000000000000002 RSI: 000055d38ca80330 RDI: 0000000000000001
[  101.581267][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[  101.581550][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000002
[  101.581819][  T227] R13: 00007f839b12f760 R14: 0000000000000002 R15: 00007f839b12a9c0
| [  102.103453][  T227] ------------[ cut here ]------------
| [ 102.103753][ 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) 
| [  102.104149][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  102.104910][  T227] Tainted: [W]=WARN
[  102.105050][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 102.105288][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 102.105522][ 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
[  102.106171][  T227] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  102.106406][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  102.106684][  T227] RDX: 0000000000000000 RSI: ffff888005172c98 RDI: ffff88800a530b28
[  102.106963][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[  102.107246][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[  102.107521][  T227] R13: ffff888005172128 R14: ffff888005172008 R15: ffff888005172000
[  102.107793][  T227] FS:  00007f839af32740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  102.108122][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  102.108359][  T227] CR2: 000055d38ca80330 CR3: 0000000005936005 CR4: 0000000000772ef0
[  102.108641][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  102.108917][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  102.109200][  T227] PKRU: 55555554
[  102.109349][  T227] Call Trace:
[  102.109488][  T227]  <TASK>
[ 102.109584][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 102.109770][ T227] ? __warn (kernel/panic.c:748) 
[ 102.109917][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 102.110114][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 102.110308][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 102.110451][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 102.110639][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 102.110838][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 102.111033][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 102.111281][ 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) 
[ 102.111473][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 102.111664][ T227] register_netdevice (net/core/dev.c:11003) 
[ 102.111861][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 102.112058][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 102.112284][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 102.112529][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 102.112789][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 102.113033][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 102.113229][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 102.113428][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 102.113665][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 102.113851][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 102.114048][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 102.114247][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 102.114438][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 102.114587][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 102.114781][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 102.114968][ 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) 
[ 102.115167][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 102.115360][ T227] ksys_write (fs/read_write.c:731) 
[ 102.115506][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 102.115692][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 102.115889][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 102.116081][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  102.116319][  T227] RIP: 0033:0x7f839b073b77
[ 102.116510][ 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
[  102.117166][  T227] RSP: 002b:00007ffce19f3d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  102.117442][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f839b073b77
[  102.117719][  T227] RDX: 0000000000000002 RSI: 000055d38ca80330 RDI: 0000000000000001
[  102.117992][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[  102.118278][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000002
[  102.118557][  T227] R13: 00007f839b12f760 R14: 0000000000000002 R15: 00007f839b12a9c0
| [  109.037240][  T227] ------------[ cut here ]------------
| [ 109.037467][ 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) 
| [  109.037842][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  109.038623][  T227] Tainted: [W]=WARN
[  109.038765][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 109.038996][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 109.039244][ 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
[  109.039895][  T227] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  109.040141][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  109.040417][  T227] RDX: 0000000000000000 RSI: ffff888004fa2c98 RDI: ffff88800a530b28
[  109.040694][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[  109.040969][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[  109.041249][  T227] R13: ffff888004fa2128 R14: ffff888004fa2008 R15: ffff888004fa2000
[  109.041529][  T227] FS:  00007f839af32740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  109.041849][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  109.042101][  T227] CR2: 00007f839afb7440 CR3: 0000000005936006 CR4: 0000000000772ef0
[  109.042378][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  109.042657][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  109.042934][  T227] PKRU: 55555554
[  109.043076][  T227] Call Trace:
[  109.043230][  T227]  <TASK>
[ 109.043328][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 109.043518][ T227] ? __warn (kernel/panic.c:748) 
[ 109.043665][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 109.043852][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 109.044047][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 109.044201][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 109.044389][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 109.044588][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 109.044784][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 109.045019][ 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) 
[ 109.045222][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 109.045415][ T227] register_netdevice (net/core/dev.c:11003) 
[ 109.045606][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 109.045804][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 109.046007][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 109.046260][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 109.046520][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 109.046762][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 109.046954][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 109.047158][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 109.047397][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 109.047585][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 109.047772][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 109.047964][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 109.048164][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 109.048314][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 109.048506][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 109.048705][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 109.048906][ T227] ksys_write (fs/read_write.c:731) 
[ 109.049049][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 109.049258][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 109.049447][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  109.049677][  T227] RIP: 0033:0x7f839b073b77
[ 109.049873][ 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
[  109.050543][  T227] RSP: 002b:00007ffce19f3d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  109.050822][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f839b073b77
[  109.051111][  T227] RDX: 0000000000000002 RSI: 000055d38ca80330 RDI: 0000000000000001
[  109.051382][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[  109.051654][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000002
[  109.051925][  T227] R13: 00007f839b12f760 R14: 0000000000000002 R15: 00007f839b12a9c0
| [  111.191437][  T227] ------------[ cut here ]------------
| [ 111.191826][ 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) 
| [  111.192259][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  111.193115][  T227] Tainted: [W]=WARN
[  111.193272][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 111.193526][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.193784][ 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
[  111.195667][  T227] RSP: 0018:ffffc90000b37520 EFLAGS: 00010246
[  111.195931][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  111.196347][  T227] RDX: 0000000000000000 RSI: ffff88801423ac98 RDI: ffff88800a530b78
[  111.196651][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[  111.196955][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[  111.197303][  T227] R13: ffff88801423a128 R14: ffff88801423a008 R15: ffff88801423a000
[  111.197604][  T227] FS:  00007f839af32740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  111.197953][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  111.198220][  T227] CR2: 000055d38ca5ccdc CR3: 0000000005936003 CR4: 0000000000772ef0
[  111.198524][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  111.198825][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  111.199133][  T227] PKRU: 55555554
[  111.199288][  T227] Call Trace:
[  111.199442][  T227]  <TASK>
[ 111.199547][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.199749][ T227] ? __warn (kernel/panic.c:748) 
[ 111.199906][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.200224][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 111.200443][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 111.200600][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 111.200806][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 111.201026][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.201252][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 111.201514][ 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) 
[ 111.201726][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 111.201940][ T227] register_netdevice (net/core/dev.c:11003) 
[ 111.202169][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 111.202385][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 111.202606][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 111.202871][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 111.203031][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 111.203311][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 111.203579][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 111.203846][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 111.204068][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 111.204344][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 111.204558][ 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)) 
[ 111.204712][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 111.204925][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 111.205148][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 111.205359][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 111.205570][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 111.205780][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 111.206030][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 111.206249][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 111.206475][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 111.206678][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 111.206879][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 111.207098][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 111.207303][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 111.207505][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 111.207709][ 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) 
[ 111.207931][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 111.208151][ T227] device_add (drivers/base/core.c:3672) 
[ 111.208362][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 111.208567][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 111.208783][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 111.209043][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 111.209319][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 111.209528][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 111.209738][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 111.209939][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 111.210159][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 111.210323][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 111.210531][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 111.210742][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 111.210957][ T227] ksys_write (fs/read_write.c:731) 
[ 111.211123][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 111.211338][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 111.211544][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  111.211795][  T227] RIP: 0033:0x7f839b073b77
[ 111.212001][ 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
[  111.212727][  T227] RSP: 002b:00007ffce19f3d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  111.213032][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f839b073b77
[  111.213340][  T227] RDX: 0000000000000004 RSI: 000055d38ca80330 RDI: 0000000000000001
[  111.213638][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[  111.213943][  T227] R10: 00007f839b0e63e0 R11: 0000000000000246 R12: 0000000000000004
[  111.214252][  T227] R13: 00007f839b12f760 R14: 0000000000000004 R15: 00007f839b12a9c0
| [  111.323488][  T227] ------------[ cut here ]------------
| [ 111.323819][ 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) 
| [  111.324220][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  111.325028][  T227] Tainted: [W]=WARN
[  111.325192][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 111.325452][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.325701][ 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
[  111.326358][  T227] RSP: 0018:ffffc90000b37910 EFLAGS: 00010246
[  111.326606][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  111.326892][  T227] RDX: 0000000000000000 RSI: ffff888005172c98 RDI: ffff88800a530b28
[  111.327190][  T227] RBP: ffffffffbef23440 R08: 0000000000000000 R09: fffffbfff79bd83c
[  111.327494][  T227] R10: ffffffffbcdec1e7 R11: ffff88800a530040 R12: 0000000000000000
[  111.327778][  T227] R13: ffff888005172128 R14: ffff888005172008 R15: ffff888005172000
[  111.328064][  T227] FS:  00007f839af32740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  111.328406][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  111.328650][  T227] CR2: 000055d38ca80330 CR3: 0000000005936001 CR4: 0000000000772ef0
[  111.329062][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  111.329357][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  111.329642][  T227] PKRU: 55555554
[  111.329795][  T227] Call Trace:
[  111.329949][  T227]  <TASK>
[ 111.330058][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.330269][ T227] ? __warn (kernel/panic.c:748) 
[ 111.330430][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.330629][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 111.330833][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 111.330986][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 111.331194][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 111.331403][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.331611][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 111.331860][ 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) 
[ 111.332071][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 111.332285][ T227] register_netdevice (net/core/dev.c:11003) 
[ 111.332493][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 111.332701][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 111.332917][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 111.333184][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 111.333455][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 111.333707][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 111.333910][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 111.334126][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 111.334379][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 111.334578][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 111.334785][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 111.334989][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 111.335203][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 111.335368][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 111.335573][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 111.335772][ 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) 
[ 111.335978][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 111.336198][ T227] ksys_write (fs/read_write.c:731) 
[ 111.336352][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 111.336551][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 111.336756][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 111.336966][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  111.337215][  T227] RIP: 0033:0x7f839b073b77
[ 111.337420][ 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
[  111.338073][  T227] RSP: 002b:00007ffce19f3d98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  111.338403][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f839b073b77
[  111.338693][  T227] RDX: 0000000000000002 RSI: 000055d38ca80330 RDI: 0000000000000001
[  111.338991][  T227] RBP: 000055d38ca80330 R08: 0000000000000000 R09: 00007f839b0e64e0
[  111.339295][  T227] R10: 00007f839b0e63e0 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