======================================
| 0
| xx__-> [   10.760779][  T228] ------------[ cut here ]------------
| [ 10.761199][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   10.761782][  T228] Modules linked in: netdevsim
[   10.762456][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.762744][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.763057][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   10.763942][  T228] RSP: 0018:ffffc90000b47520 EFLAGS: 00010246
[   10.764278][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.764665][  T228] RDX: 0000000000000000 RSI: ffff888009bb2c98 RDI: ffff88800b4c0b78
[   10.765021][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[   10.765443][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[   10.765782][  T228] R13: ffff888009bb2128 R14: ffff888009bb2008 R15: ffff888009bb2000
[   10.766120][  T228] FS:  00007fcacc097740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   10.766559][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.766847][  T228] CR2: 000055b1da12c338 CR3: 000000000a032004 CR4: 0000000000772ef0
[   10.767203][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.767580][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.767928][  T228] PKRU: 55555554
[   10.768106][  T228] Call Trace:
[   10.768296][  T228]  <TASK>
[ 10.768590][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.768831][ T228] ? __warn (kernel/panic.c:748) 
[ 10.769015][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.769259][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.769512][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.769689][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.769916][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.770156][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.770428][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.770730][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 10.770994][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.771259][ T228] register_netdevice (net/core/dev.c:11003) 
[ 10.771544][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.771784][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.772030][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.772347][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 10.772524][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.772823][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.773114][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 10.773429][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 10.773680][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 10.773966][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 10.774204][ T228] ? 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)) 
[ 10.774386][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 10.774617][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 10.774847][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 10.775075][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 10.775352][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 10.775577][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 10.775852][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 10.776079][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 10.776313][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.776546][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.776771][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 10.777008][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 10.777244][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 10.777476][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.777700][ T228] ? 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) 
[ 10.777931][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 10.778162][ T228] device_add (drivers/base/core.c:3672) 
[ 10.778414][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 10.778637][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 10.778888][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 10.779193][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 10.779498][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.779722][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.779952][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.780187][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.780459][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.780639][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.780893][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 10.781115][ T228] ? 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) 
[ 10.781396][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 10.781630][ T228] ksys_write (fs/read_write.c:731) 
[ 10.781803][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.782024][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.782278][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.782516][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.782793][  T228] RIP: 0033:0x7fcacc1d8b77
[ 10.783030][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   10.783821][  T228] RSP: 002b:00007ffeb53a3898 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.784160][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fcacc1d8b77
[   10.784536][  T228] RDX: 0000000000000004 RSI: 000055b1da12b330 RDI: 0000000000000001
[   10.784867][  T228] RBP: 000055b1da12b330 R08: 0000000000000003 R09: 0000000000000077
[   10.785209][  T228] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000004
[   10.785552][  T228] R13: 00007fcacc294760 R14: 0000000000000004 R15: 00007fcacc28f9c0
| [   16.677247][  T228] ------------[ cut here ]------------
| [ 16.677721][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   16.678255][  T228] Modules linked in: netdevsim [last unloaded: ip6_udp_tunnel]
| [   16.679554][  T228] Tainted: [W]=WARN
[   16.679869][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 16.680291][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 16.680768][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   16.681913][  T228] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[   16.682359][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   16.682854][  T228] RDX: 0000000000000000 RSI: ffff888008bb2c98 RDI: ffff88800b4c0b28
[   16.683370][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[   16.683876][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[   16.684375][  T228] R13: ffff888008bb2128 R14: ffff888008bb2008 R15: ffff888008bb2000
[   16.684752][  T228] FS:  00007fcacc097740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   16.685380][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   16.685658][  T228] CR2: 00007f1e806f2a00 CR3: 000000000a032001 CR4: 0000000000772ef0
[   16.685974][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   16.686295][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   16.686620][  T228] PKRU: 55555554
[   16.686830][  T228] Call Trace:
[   16.687043][  T228]  <TASK>
[ 16.687213][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 16.687461][ T228] ? __warn (kernel/panic.c:748) 
[ 16.687633][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 16.687892][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 16.688194][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 16.688402][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 16.688635][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 16.688912][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 16.689217][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 16.689522][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 16.689753][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 16.690002][ T228] register_netdevice (net/core/dev.c:11003) 
[ 16.690241][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 16.690549][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 16.690871][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 16.691194][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 16.691525][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 16.691802][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 16.692103][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 16.692394][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 16.692693][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 16.692912][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 16.693238][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 16.693479][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 16.693697][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 16.693898][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 16.694235][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 16.694498][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 16.694725][ T228] ksys_write (fs/read_write.c:731) 
[ 16.694964][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 16.695197][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 16.695519][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   16.695787][  T228] RIP: 0033:0x7fcacc1d8b77
[ 16.696060][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   16.696770][  T228] RSP: 002b:00007ffeb53a3798 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   16.697071][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcacc1d8b77
[   16.697472][  T228] RDX: 0000000000000002 RSI: 000055b1da12b330 RDI: 0000000000000001
[   16.697779][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[   16.698076][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000002
[   16.698400][  T228] R13: 00007fcacc294760 R14: 0000000000000002 R15: 00007fcacc28f9c0
| [   23.264249][  T228] ------------[ cut here ]------------
| [ 23.264669][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   23.265129][  T228] Modules linked in: netdevsim [last unloaded: netdevsim]
| [   23.265896][  T228] Tainted: [W]=WARN
[   23.266067][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.266367][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 23.266674][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   23.267515][  T228] RSP: 0018:ffffc90000b47520 EFLAGS: 00010246
[   23.267796][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   23.268182][  T228] RDX: 0000000000000000 RSI: ffff88800c0bac98 RDI: ffff88800b4c0b78
[   23.268519][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[   23.268852][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[   23.269194][  T228] R13: ffff88800c0ba128 R14: ffff88800c0ba008 R15: ffff88800c0ba000
[   23.269550][  T228] FS:  00007fcacc097740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   23.270070][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.270367][  T228] CR2: 00007fcacc24b733 CR3: 000000000a032004 CR4: 0000000000772ef0
[   23.270702][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   23.271039][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   23.271400][  T228] PKRU: 55555554
[   23.271571][  T228] Call Trace:
[   23.271750][  T228]  <TASK>
[ 23.271877][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 23.272126][ T228] ? __warn (kernel/panic.c:748) 
[ 23.272305][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 23.272544][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 23.272779][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 23.272953][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 23.273172][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 23.273417][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 23.273647][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 23.273920][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 23.274167][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 23.274494][ T228] register_netdevice (net/core/dev.c:11003) 
[ 23.274746][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 23.274990][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 23.275256][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 23.275569][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 23.275746][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 23.276066][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 23.276400][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 23.276711][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 23.276958][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 23.277263][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 23.277505][ T228] ? 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)) 
[ 23.277676][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 23.277910][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 23.278136][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 23.278370][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 23.278593][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 23.278817][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 23.279085][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 23.279311][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 23.279542][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 23.279771][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 23.280022][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 23.280251][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 23.280490][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 23.280723][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 23.280947][ T228] ? 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) 
[ 23.281195][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 23.281442][ T228] device_add (drivers/base/core.c:3672) 
[ 23.281676][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 23.281897][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 23.282127][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 23.282438][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 23.282730][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 23.282993][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 23.283219][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 23.283467][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 23.283692][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 23.283881][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 23.284149][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 23.284383][ T228] ? 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) 
[ 23.284619][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 23.284849][ T228] ksys_write (fs/read_write.c:731) 
[ 23.285024][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 23.285240][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 23.285510][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 23.285734][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.286002][  T228] RIP: 0033:0x7fcacc1d8b77
[ 23.286257][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   23.287011][  T228] RSP: 002b:00007ffeb53a7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   23.287351][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fcacc1d8b77
[   23.287676][  T228] RDX: 0000000000000004 RSI: 000055b1da12b330 RDI: 0000000000000001
[   23.288042][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[   23.288383][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000004
[   23.288705][  T228] R13: 00007fcacc294760 R14: 0000000000000004 R15: 00007fcacc28f9c0
| [   23.325387][  T228] ------------[ cut here ]------------
| [ 23.325755][ T228] WARNING: CPU: 1 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   23.326195][  T228] Modules linked in: netdevsim [last unloaded: netdevsim]
| [   23.326959][  T228] Tainted: [W]=WARN
[   23.327122][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.327447][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 23.327715][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   23.328461][  T228] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[   23.328726][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   23.329047][  T228] RDX: 0000000000000000 RSI: ffff8880097cac98 RDI: ffff88800b4c0b28
[   23.329374][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[   23.329694][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[   23.330000][  T228] R13: ffff8880097ca128 R14: ffff8880097ca008 R15: ffff8880097ca000
[   23.330621][  T228] FS:  00007fcacc097740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   23.331009][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.331265][  T228] CR2: 00007f1e8087fa30 CR3: 000000000a032004 CR4: 0000000000772ef0
[   23.331583][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   23.331904][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   23.332223][  T228] PKRU: 55555554
[   23.332394][  T228] Call Trace:
[   23.332549][  T228]  <TASK>
[ 23.332659][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 23.332870][ T228] ? __warn (kernel/panic.c:748) 
[ 23.333030][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 23.333268][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 23.333498][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 23.333663][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 23.333877][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 23.334097][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 23.334316][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 23.334611][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 23.334825][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 23.335038][ T228] register_netdevice (net/core/dev.c:11003) 
[ 23.335253][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 23.335516][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 23.335744][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 23.336015][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 23.336300][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 23.336577][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 23.336791][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 23.337013][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 23.337282][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 23.337503][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 23.337718][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 23.337929][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 23.338145][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 23.338309][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 23.338538][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 23.338752][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 23.338965][ T228] ksys_write (fs/read_write.c:731) 
[ 23.339124][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 23.339351][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 23.339561][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.339820][  T228] RIP: 0033:0x7fcacc1d8b77
[ 23.340026][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   23.340733][  T228] RSP: 002b:00007ffeb53a7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   23.341047][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcacc1d8b77
[   23.341372][  T228] RDX: 0000000000000002 RSI: 000055b1da12b330 RDI: 0000000000000001
[   23.341687][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[   23.341991][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000002
[   23.342297][  T228] R13: 00007fcacc294760 R14: 0000000000000002 R15: 00007fcacc28f9c0
| [   29.851952][  T228] ------------[ cut here ]------------
| [ 29.852348][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   29.852788][  T228] Modules linked in: netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   29.853670][  T228] Tainted: [W]=WARN
[   29.853887][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 29.854170][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 29.854478][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   29.855224][  T228] RSP: 0018:ffffc90000b47520 EFLAGS: 00010246
[   29.855537][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   29.855881][  T228] RDX: 0000000000000000 RSI: ffff88800ad82c98 RDI: ffff88800b4c0b78
[   29.856215][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[   29.856568][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[   29.856896][  T228] R13: ffff88800ad82128 R14: ffff88800ad82008 R15: ffff88800ad82000
[   29.857216][  T228] FS:  00007fcacc097740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   29.857625][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   29.857929][  T228] CR2: 00007f257da371b4 CR3: 000000000a032001 CR4: 0000000000772ef0
[   29.858266][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   29.858606][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   29.859097][  T228] PKRU: 55555554
[   29.859269][  T228] Call Trace:
[   29.859451][  T228]  <TASK>
[ 29.859572][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 29.859797][ T228] ? __warn (kernel/panic.c:748) 
[ 29.859974][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 29.860201][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 29.860443][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 29.860652][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 29.860878][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 29.861115][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 29.861360][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 29.861638][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 29.861885][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 29.862126][ T228] register_netdevice (net/core/dev.c:11003) 
[ 29.862377][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 29.862642][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 29.862907][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 29.863234][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 29.863429][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 29.863739][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 29.864051][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 29.864365][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 29.864619][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 29.864918][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 29.865181][ T228] ? 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)) 
[ 29.865397][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 29.865648][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 29.865912][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 29.866154][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 29.866405][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 29.866665][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 29.866998][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 29.867247][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 29.867506][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 29.867759][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 29.867999][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 29.868240][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 29.868486][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 29.868719][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 29.868962][ T228] ? 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) 
[ 29.869214][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 29.869474][ T228] device_add (drivers/base/core.c:3672) 
[ 29.869716][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 29.869953][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 29.870212][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 29.870533][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 29.870864][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 29.871110][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 29.871369][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 29.871606][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 29.871864][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 29.872068][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 29.872313][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 29.872556][ T228] ? 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) 
[ 29.872792][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 29.873032][ T228] ksys_write (fs/read_write.c:731) 
[ 29.873223][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 29.873455][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 29.873710][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 29.873934][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   29.874236][  T228] RIP: 0033:0x7fcacc1d8b77
[ 29.874475][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   29.875229][  T228] RSP: 002b:00007ffeb53a7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   29.875621][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fcacc1d8b77
[   29.875968][  T228] RDX: 0000000000000004 RSI: 000055b1da12b330 RDI: 0000000000000001
[   29.876317][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[   29.876680][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000004
[   29.877013][  T228] R13: 00007fcacc294760 R14: 0000000000000004 R15: 00007fcacc28f9c0
| [   29.916694][  T228] ------------[ cut here ]------------
| [ 29.917069][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   29.917541][  T228] Modules linked in: netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   29.918349][  T228] Tainted: [W]=WARN
[   29.918524][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 29.918788][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 29.919051][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   29.919747][  T228] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[   29.920016][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   29.920339][  T228] RDX: 0000000000000000 RSI: ffff88800c232c98 RDI: ffff88800b4c0b28
[   29.920675][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[   29.920985][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[   29.921297][  T228] R13: ffff88800c232128 R14: ffff88800c232008 R15: ffff88800c232000
[   29.921622][  T228] FS:  00007fcacc097740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   29.921989][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   29.922253][  T228] CR2: 00007fcacc0f3330 CR3: 000000000a032001 CR4: 0000000000772ef0
[   29.922588][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   29.922896][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   29.923389][  T228] PKRU: 55555554
[   29.923563][  T228] Call Trace:
[   29.923736][  T228]  <TASK>
[ 29.923848][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 29.924058][ T228] ? __warn (kernel/panic.c:748) 
[ 29.924219][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 29.924438][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 29.924661][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 29.924822][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 29.925039][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 29.925272][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 29.925508][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 29.925776][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 29.925983][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 29.926205][ T228] register_netdevice (net/core/dev.c:11003) 
[ 29.926422][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 29.926636][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 29.926854][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 29.927149][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 29.927430][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 29.927706][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 29.927916][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 29.928140][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 29.928417][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 29.928640][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 29.928842][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 29.929062][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 29.929269][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 29.929446][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 29.929650][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 29.929859][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 29.930075][ T228] ksys_write (fs/read_write.c:731) 
[ 29.930239][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 29.930462][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 29.930694][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   29.930939][  T228] RIP: 0033:0x7fcacc1d8b77
[ 29.931147][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   29.932113][  T228] RSP: 002b:00007ffeb53a4a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   29.932579][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcacc1d8b77
[   29.932897][  T228] RDX: 0000000000000002 RSI: 000055b1da12b330 RDI: 0000000000000001
[   29.933202][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[   29.933550][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000002
[   29.933847][  T228] R13: 00007fcacc294760 R14: 0000000000000002 R15: 00007fcacc28f9c0
| [   43.709293][  T228] ------------[ cut here ]------------
| [ 43.709628][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   43.710005][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   43.710876][  T228] Tainted: [W]=WARN
[   43.711033][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 43.711290][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 43.711545][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   43.712204][  T228] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[   43.712453][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   43.712734][  T228] RDX: 0000000000000000 RSI: ffff8880097cac98 RDI: ffff88800b4c0b28
[   43.713020][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[   43.713300][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[   43.713593][  T228] R13: ffff8880097ca128 R14: ffff8880097ca008 R15: ffff8880097ca000
[   43.713878][  T228] FS:  00007fcacc097740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   43.714212][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   43.714463][  T228] CR2: 00007fcacc11c440 CR3: 000000000a032004 CR4: 0000000000772ef0
[   43.714753][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   43.715037][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   43.715317][  T228] PKRU: 55555554
[   43.715474][  T228] Call Trace:
[   43.715622][  T228]  <TASK>
[ 43.715722][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 43.715917][ T228] ? __warn (kernel/panic.c:748) 
[ 43.716065][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 43.716261][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 43.716469][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 43.716619][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 43.716811][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 43.717016][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 43.717214][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 43.717467][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 43.717671][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 43.717874][ T228] register_netdevice (net/core/dev.c:11003) 
[ 43.718073][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 43.718303][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 43.718523][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 43.718776][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 43.719055][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 43.719308][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 43.719507][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 43.719710][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 43.719956][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 43.720144][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 43.720345][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 43.720569][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 43.720771][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 43.720925][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 43.721119][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 43.721319][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 43.721529][ T228] ksys_write (fs/read_write.c:731) 
[ 43.721675][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 43.721876][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 43.722069][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   43.722307][  T228] RIP: 0033:0x7fcacc1d8b77
[ 43.722515][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   43.723170][  T228] RSP: 002b:00007ffeb53a4a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   43.723470][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcacc1d8b77
[   43.723778][  T228] RDX: 0000000000000002 RSI: 000055b1da12b330 RDI: 0000000000000001
[   43.724058][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[   43.724350][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000002
[   43.724636][  T228] R13: 00007fcacc294760 R14: 0000000000000002 R15: 00007fcacc28f9c0
| [   56.680430][  T228] ------------[ cut here ]------------
| [ 56.680785][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   56.681293][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   56.682240][  T228] Tainted: [W]=WARN
[   56.682411][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 56.682693][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 56.682962][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   56.683713][  T228] RSP: 0018:ffffc90000b47520 EFLAGS: 00010246
[   56.683975][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   56.684298][  T228] RDX: 0000000000000000 RSI: ffff888009bb2c98 RDI: ffff88800b4c0b78
[   56.684624][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[   56.684930][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[   56.685249][  T228] R13: ffff888009bb2128 R14: ffff888009bb2008 R15: ffff888009bb2000
[   56.685695][  T228] FS:  00007fcacc097740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   56.686081][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   56.686377][  T228] CR2: 00007f1e805025a0 CR3: 000000000a032001 CR4: 0000000000772ef0
[   56.686693][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   56.686998][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   56.687347][  T228] PKRU: 55555554
[   56.687508][  T228] Call Trace:
[   56.687663][  T228]  <TASK>
[ 56.687770][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 56.687982][ T228] ? __warn (kernel/panic.c:748) 
[ 56.688146][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 56.688373][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 56.688586][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 56.688746][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 56.688954][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 56.689238][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 56.689481][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 56.689747][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 56.689967][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 56.690216][ T228] register_netdevice (net/core/dev.c:11003) 
[ 56.690463][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 56.690690][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 56.690912][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 56.691196][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 56.691377][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 56.691685][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 56.691956][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 56.692235][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 56.692467][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 56.692729][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 56.692940][ T228] ? 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)) 
[ 56.693111][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 56.693341][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 56.693557][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 56.693772][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 56.693980][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 56.694202][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 56.694471][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 56.694681][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 56.694891][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 56.695132][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 56.695357][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 56.695576][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 56.695781][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 56.695987][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 56.696225][ T228] ? 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) 
[ 56.696464][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 56.696685][ T228] device_add (drivers/base/core.c:3672) 
[ 56.696896][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 56.697104][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 56.697322][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 56.697601][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 56.697869][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 56.698082][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 56.698296][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 56.698518][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 56.698732][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 56.698898][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 56.699140][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 56.699374][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 56.699599][ T228] ksys_write (fs/read_write.c:731) 
[ 56.699759][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 56.699982][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 56.700192][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   56.700471][  T228] RIP: 0033:0x7fcacc1d8b77
[ 56.700686][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   56.701409][  T228] RSP: 002b:00007ffeb53a7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   56.701720][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fcacc1d8b77
[   56.702023][  T228] RDX: 0000000000000004 RSI: 000055b1da12b330 RDI: 0000000000000001
[   56.702340][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[   56.702651][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000004
[   56.702955][  T228] R13: 00007fcacc294760 R14: 0000000000000004 R15: 00007fcacc28f9c0
| [   56.757784][  T228] ------------[ cut here ]------------
| [ 56.758258][ T228] WARNING: CPU: 3 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   56.758911][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   56.760180][  T228] Tainted: [W]=WARN
[   56.760442][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 56.760819][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 56.761208][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   56.762346][  T228] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[   56.762742][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   56.763197][  T228] RDX: 0000000000000000 RSI: ffff888005142c98 RDI: ffff88800b4c0b28
[   56.763669][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[   56.764116][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[   56.764589][  T228] R13: ffff888005142128 R14: ffff888005142008 R15: ffff888005142000
[   56.765044][  T228] FS:  00007fcacc097740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   56.765599][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   56.765976][  T228] CR2: 00007fcacc0f3330 CR3: 000000000a032001 CR4: 0000000000772ef0
[   56.766460][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   56.766921][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   56.767412][  T228] PKRU: 55555554
[   56.767855][  T228] Call Trace:
[   56.768084][  T228]  <TASK>
[ 56.768245][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 56.768579][ T228] ? __warn (kernel/panic.c:748) 
[ 56.768815][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 56.769137][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 56.769489][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 56.769745][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 56.770063][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 56.770469][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 56.770710][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 56.770955][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 56.771159][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 56.771385][ T228] register_netdevice (net/core/dev.c:11003) 
[ 56.771594][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 56.771798][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 56.772004][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 56.772272][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 56.772549][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 56.772798][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 56.772996][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 56.773208][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 56.773474][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 56.773661][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 56.773853][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 56.774068][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 56.774418][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 56.774670][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 56.774991][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 56.775319][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 56.775672][ T228] ksys_write (fs/read_write.c:731) 
[ 56.775912][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 56.776178][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 56.776397][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   56.776637][  T228] RIP: 0033:0x7fcacc1d8b77
[ 56.776835][ T228] Code: Unable to access opcode bytes at 0x7fcacc1d8b4d.

Code starting with the faulting instruction
===========================================
[   56.777120][  T228] RSP: 002b:00007ffeb53a4a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   56.777420][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcacc1d8b77
[   56.777699][  T228] RDX: 0000000000000002 RSI: 000055b1da12b330 RDI: 0000000000000001
[   56.777981][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[   56.778437][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000002
[   56.778901][  T228] R13: 00007fcacc294760 R14: 0000000000000002 R15: 00007fcacc28f9c0
| [   70.267303][  T228] ------------[ cut here ]------------
| [ 70.267609][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   70.268033][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   70.268909][  T228] Tainted: [W]=WARN
[   70.269070][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 70.269343][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 70.269614][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   70.270373][  T228] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[   70.270644][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   70.270954][  T228] RDX: 0000000000000000 RSI: ffff8880089f2c98 RDI: ffff88800b4c0b28
[   70.271276][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[   70.271619][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[   70.271930][  T228] R13: ffff8880089f2128 R14: ffff8880089f2008 R15: ffff8880089f2000
[   70.272244][  T228] FS:  00007fcacc097740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   70.272630][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   70.272897][  T228] CR2: 00007fcacc11c440 CR3: 000000000a032004 CR4: 0000000000772ef0
[   70.273224][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   70.273563][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   70.273894][  T228] PKRU: 55555554
[   70.274053][  T228] Call Trace:
[   70.274211][  T228]  <TASK>
[ 70.274314][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 70.274543][ T228] ? __warn (kernel/panic.c:748) 
[ 70.274717][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 70.274931][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 70.275147][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 70.275322][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 70.275550][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 70.275786][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 70.276019][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 70.276296][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 70.276525][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 70.276748][ T228] register_netdevice (net/core/dev.c:11003) 
[ 70.276964][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 70.277187][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 70.277435][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 70.277725][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 70.278023][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 70.278297][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 70.278535][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 70.278768][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 70.279050][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 70.279263][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 70.279484][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 70.279696][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 70.279911][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 70.280078][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 70.280291][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 70.280538][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 70.280754][ T228] ksys_write (fs/read_write.c:731) 
[ 70.280917][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 70.281147][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 70.281363][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   70.281620][  T228] RIP: 0033:0x7fcacc1d8b77
[ 70.281836][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   70.282601][  T228] RSP: 002b:00007ffeb53a4a68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   70.282947][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcacc1d8b77
[   70.283273][  T228] RDX: 0000000000000002 RSI: 000055b1da12b330 RDI: 0000000000000001
[   70.283601][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[   70.283914][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000002
[   70.284218][  T228] R13: 00007fcacc294760 R14: 0000000000000002 R15: 00007fcacc28f9c0
| [   83.464526][  T228] ------------[ cut here ]------------
| [ 83.464914][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   83.465431][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   83.466516][  T228] Tainted: [W]=WARN
[   83.466807][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 83.467265][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 83.467754][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   83.469042][  T228] RSP: 0018:ffffc90000b47520 EFLAGS: 00010246
[   83.469548][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   83.470116][  T228] RDX: 0000000000000000 RSI: ffff88800ad82c98 RDI: ffff88800b4c0b78
[   83.470718][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[   83.471540][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[   83.472111][  T228] R13: ffff88800ad82128 R14: ffff88800ad82008 R15: ffff88800ad82000
[   83.472690][  T228] FS:  00007fcacc097740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   83.473205][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   83.473510][  T228] CR2: 00007fab9ff25000 CR3: 000000000a032001 CR4: 0000000000772ef0
[   83.473859][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   83.474255][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   83.474618][  T228] PKRU: 55555554
[   83.474807][  T228] Call Trace:
[   83.474993][  T228]  <TASK>
[ 83.475182][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 83.475531][ T228] ? __warn (kernel/panic.c:748) 
[ 83.475728][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 83.475972][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 83.476245][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 83.476444][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 83.476686][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 83.476943][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 83.477203][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 83.477520][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 83.477768][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 83.478011][ T228] register_netdevice (net/core/dev.c:11003) 
[ 83.478274][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 83.478536][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 83.478937][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 83.479441][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 83.479747][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 83.480243][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 83.480781][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 83.481268][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 83.481701][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 83.482198][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 83.482616][ T228] ? 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)) 
[ 83.482920][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 83.483322][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 83.483800][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 83.484190][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 83.484603][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 83.484985][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 83.485372][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 83.485618][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 83.485852][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 83.486122][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 83.486409][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 83.486654][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 83.486897][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 83.487146][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 83.487400][ T228] ? 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) 
[ 83.487644][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 83.487893][ T228] device_add (drivers/base/core.c:3672) 
[ 83.488146][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 83.488396][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 83.488643][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 83.488998][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 83.489505][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 83.489898][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 83.490298][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 83.490712][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 83.491026][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 83.491446][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 83.491850][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 83.492259][ T228] ksys_write (fs/read_write.c:731) 
[ 83.492583][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 83.492997][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 83.493420][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   83.493896][  T228] RIP: 0033:0x7fcacc1d8b77
[ 83.494288][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   83.495563][  T228] RSP: 002b:00007ffeb53a7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   83.496144][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fcacc1d8b77
[   83.496712][  T228] RDX: 0000000000000004 RSI: 000055b1da12b330 RDI: 0000000000000001
[   83.497259][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[   83.497817][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000004
[   83.498419][  T228] R13: 00007fcacc294760 R14: 0000000000000004 R15: 00007fcacc28f9c0
| [   83.552548][  T228] ------------[ cut here ]------------
| [ 83.552901][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   83.553421][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   83.554624][  T228] Tainted: [W]=WARN
[   83.555034][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 83.555525][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 83.555968][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   83.557163][  T228] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[   83.557617][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   83.558127][  T228] RDX: 0000000000000000 RSI: ffff88800c232c98 RDI: ffff88800b4c0b28
[   83.558657][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[   83.559164][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[   83.559694][  T228] R13: ffff88800c232128 R14: ffff88800c232008 R15: ffff88800c232000
[   83.560196][  T228] FS:  00007fcacc097740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   83.560745][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   83.561018][  T228] CR2: 00007fcacc0f3330 CR3: 000000000a032001 CR4: 0000000000772ef0
[   83.561612][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   83.561936][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   83.562264][  T228] PKRU: 55555554
[   83.562444][  T228] Call Trace:
[   83.562615][  T228]  <TASK>
[ 83.562733][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 83.562954][ T228] ? __warn (kernel/panic.c:748) 
[ 83.563196][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 83.563528][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 83.563765][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 83.563935][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 83.564169][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 83.564411][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 83.564659][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 83.565086][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 83.565462][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 83.565818][ T228] register_netdevice (net/core/dev.c:11003) 
[ 83.566178][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 83.566571][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 83.566961][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 83.567440][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 83.567932][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 83.568411][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 83.568769][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 83.569141][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 83.569607][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 83.569972][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 83.570361][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 83.570714][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 83.571018][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 83.571218][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 83.571457][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 83.571685][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 83.571940][ T228] ksys_write (fs/read_write.c:731) 
[ 83.572164][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 83.572531][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 83.572766][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   83.573046][  T228] RIP: 0033:0x7fcacc1d8b77
[ 83.573282][ T228] Code: Unable to access opcode bytes at 0x7fcacc1d8b4d.

Code starting with the faulting instruction
===========================================
[   83.573572][  T228] RSP: 002b:00007ffeb53a6358 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   83.573895][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcacc1d8b77
[   83.574231][  T228] RDX: 0000000000000002 RSI: 000055b1da12b330 RDI: 0000000000000001
[   83.574560][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[   83.574878][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000002
[   83.575222][  T228] R13: 00007fcacc294760 R14: 0000000000000002 R15: 00007fcacc28f9c0
| [   91.341050][  T228] ------------[ cut here ]------------
| [ 91.341301][ T228] WARNING: CPU: 3 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   91.341941][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   91.342725][  T228] Tainted: [W]=WARN
[   91.342869][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 91.343109][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 91.343358][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   91.344043][  T228] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[   91.344288][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   91.344594][  T228] RDX: 0000000000000000 RSI: ffff8880097cac98 RDI: ffff88800b4c0b28
[   91.344904][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[   91.345185][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[   91.345493][  T228] R13: ffff8880097ca128 R14: ffff8880097ca008 R15: ffff8880097ca000
[   91.345774][  T228] FS:  00007fcacc097740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   91.346114][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   91.346359][  T228] CR2: 00007fcacc11c440 CR3: 000000000a032006 CR4: 0000000000772ef0
[   91.346659][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   91.346941][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   91.347226][  T228] PKRU: 55555554
[   91.347387][  T228] Call Trace:
[   91.347530][  T228]  <TASK>
[ 91.347632][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 91.347825][ T228] ? __warn (kernel/panic.c:748) 
[ 91.348007][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 91.348207][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 91.348423][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 91.348580][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 91.348788][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 91.349008][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 91.349220][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 91.349484][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 91.349724][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 91.349931][ T228] register_netdevice (net/core/dev.c:11003) 
[ 91.350133][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 91.350369][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 91.350581][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 91.350867][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 91.351138][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 91.351407][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 91.351603][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 91.351808][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 91.352089][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 91.352296][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 91.352529][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 91.352725][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 91.352919][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 91.353086][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 91.353313][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 91.353522][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 91.353739][ T228] ksys_write (fs/read_write.c:731) 
[ 91.353936][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 91.354255][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 91.354562][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   91.354910][  T228] RIP: 0033:0x7fcacc1d8b77
[ 91.355199][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   91.356348][  T228] RSP: 002b:00007ffeb53a6358 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   91.356820][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcacc1d8b77
[   91.357284][  T228] RDX: 0000000000000002 RSI: 000055b1da12b330 RDI: 0000000000000001
[   91.357759][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[   91.358223][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000002
[   91.358691][  T228] R13: 00007fcacc294760 R14: 0000000000000002 R15: 00007fcacc28f9c0
| [   99.340686][  T228] ------------[ cut here ]------------
| [ 99.341038][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   99.341587][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   99.342530][  T228] Tainted: [W]=WARN
[   99.342702][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 99.342983][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 99.343270][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   99.344075][  T228] RSP: 0018:ffffc90000b47520 EFLAGS: 00010246
[   99.344387][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   99.344729][  T228] RDX: 0000000000000000 RSI: ffff888009bb2c98 RDI: ffff88800b4c0b78
[   99.345066][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[   99.345430][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[   99.345765][  T228] R13: ffff888009bb2128 R14: ffff888009bb2008 R15: ffff888009bb2000
[   99.346097][  T228] FS:  00007fcacc097740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   99.346624][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   99.346908][  T228] CR2: 00007fcacc11c440 CR3: 000000000a032003 CR4: 0000000000772ef0
[   99.347246][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   99.347606][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   99.347945][  T228] PKRU: 55555554
[   99.348116][  T228] Call Trace:
[   99.348289][  T228]  <TASK>
[ 99.348425][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 99.348653][ T228] ? __warn (kernel/panic.c:748) 
[ 99.348830][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 99.349061][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 99.349294][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 99.349503][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 99.349733][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 99.349983][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 99.350236][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 99.350549][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 99.350783][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 99.351015][ T228] register_netdevice (net/core/dev.c:11003) 
[ 99.351248][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 99.351518][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 99.351789][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 99.352080][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 99.352251][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 99.352562][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 99.352849][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 99.353140][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 99.353416][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 99.353713][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 99.353946][ T228] ? 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)) 
[ 99.354119][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 99.354374][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 99.354609][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 99.354840][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 99.355066][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 99.355301][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 99.355603][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 99.355835][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 99.356063][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 99.356292][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 99.356549][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 99.356795][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 99.357023][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 99.357248][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 99.357519][ T228] ? 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) 
[ 99.357758][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 99.357990][ T228] device_add (drivers/base/core.c:3672) 
[ 99.358220][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 99.358472][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 99.358719][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 99.359012][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 99.359309][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 99.359562][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 99.359799][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 99.360023][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 99.360282][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 99.360484][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 99.360715][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 99.360949][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 99.361179][ T228] ksys_write (fs/read_write.c:731) 
[ 99.361385][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 99.361630][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 99.361849][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   99.362131][  T228] RIP: 0033:0x7fcacc1d8b77
[ 99.362383][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   99.363155][  T228] RSP: 002b:00007ffeb53a7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   99.363520][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fcacc1d8b77
[   99.363857][  T228] RDX: 0000000000000004 RSI: 000055b1da12b330 RDI: 0000000000000001
[   99.364188][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[   99.364535][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000004
[   99.364875][  T228] R13: 00007fcacc294760 R14: 0000000000000004 R15: 00007fcacc28f9c0
| [   99.414255][  T228] ------------[ cut here ]------------
| [ 99.414781][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   99.415459][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   99.416848][  T228] Tainted: [W]=WARN
[   99.417102][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 99.417530][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 99.417958][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   99.419104][  T228] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[   99.419507][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   99.419978][  T228] RDX: 0000000000000000 RSI: ffff888005142c98 RDI: ffff88800b4c0b28
[   99.420382][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[   99.420686][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[   99.420989][  T228] R13: ffff888005142128 R14: ffff888005142008 R15: ffff888005142000
[   99.421296][  T228] FS:  00007fcacc097740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   99.421667][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   99.421924][  T228] CR2: 00007fcacc0f3330 CR3: 000000000a032003 CR4: 0000000000772ef0
[   99.422234][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   99.422716][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   99.423032][  T228] PKRU: 55555554
[   99.423191][  T228] Call Trace:
[   99.423362][  T228]  <TASK>
[ 99.423470][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 99.423680][ T228] ? __warn (kernel/panic.c:748) 
[ 99.423839][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 99.424046][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 99.424262][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 99.424444][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 99.424653][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 99.424872][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 99.425088][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 99.425363][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 99.425576][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 99.425791][ T228] register_netdevice (net/core/dev.c:11003) 
[ 99.426006][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 99.426230][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 99.426467][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 99.426740][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 99.427027][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 99.427296][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 99.427520][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 99.427741][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 99.428001][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 99.428204][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 99.428450][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 99.428659][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 99.428874][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 99.429026][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 99.429220][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 99.429435][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 99.429673][ T228] ksys_write (fs/read_write.c:731) 
[ 99.429820][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 99.430021][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 99.430229][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   99.430485][  T228] RIP: 0033:0x7fcacc1d8b77
[ 99.430681][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   99.431372][  T228] RSP: 002b:00007ffeb53a46d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   99.431665][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcacc1d8b77
[   99.431975][  T228] RDX: 0000000000000002 RSI: 000055b1da12b330 RDI: 0000000000000001
[   99.432283][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[   99.432595][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000002
[   99.432900][  T228] R13: 00007fcacc294760 R14: 0000000000000002 R15: 00007fcacc28f9c0
| [  102.373096][  T228] ------------[ cut here ]------------
| [ 102.374099][ T228] WARNING: CPU: 3 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  102.374549][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  102.375490][  T228] Tainted: [W]=WARN
[  102.375720][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 102.376096][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 102.376485][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  102.377612][  T228] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  102.378015][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  102.378524][  T228] RDX: 0000000000000000 RSI: ffff8880089f2c98 RDI: ffff88800b4c0b28
[  102.379012][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[  102.379535][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[  102.380022][  T228] R13: ffff8880089f2128 R14: ffff8880089f2008 R15: ffff8880089f2000
[  102.380527][  T228] FS:  00007fcacc097740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  102.381089][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  102.381514][  T228] CR2: 000055b1da10a1e8 CR3: 000000000a032004 CR4: 0000000000772ef0
[  102.382001][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  102.382489][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  102.382957][  T228] PKRU: 55555554
[  102.383205][  T228] Call Trace:
[  102.383469][  T228]  <TASK>
[ 102.383641][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 102.383969][ T228] ? __warn (kernel/panic.c:748) 
[ 102.384226][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 102.384568][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 102.384903][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 102.385150][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 102.385490][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 102.385849][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 102.386213][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 102.386654][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 102.387017][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 102.387353][ T228] register_netdevice (net/core/dev.c:11003) 
[ 102.387666][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 102.387986][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 102.388362][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 102.388774][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 102.389195][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 102.389607][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 102.389915][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 102.390319][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 102.390635][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 102.390949][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 102.391264][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 102.391596][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 102.392001][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 102.392260][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 102.392605][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 102.392964][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 102.393289][ T228] ksys_write (fs/read_write.c:731) 
[ 102.393547][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 102.393883][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 102.394220][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  102.394609][  T228] RIP: 0033:0x7fcacc1d8b77
[ 102.394951][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  102.396051][  T228] RSP: 002b:00007ffeb53a46d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  102.396549][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcacc1d8b77
[  102.396937][  T228] RDX: 0000000000000002 RSI: 000055b1da12b330 RDI: 0000000000000001
[  102.397236][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[  102.397557][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000002
[  102.397843][  T228] R13: 00007fcacc294760 R14: 0000000000000002 R15: 00007fcacc28f9c0
| [  105.351820][  T228] ------------[ cut here ]------------
| [ 105.352241][ T228] WARNING: CPU: 1 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  105.352743][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  105.353704][  T228] Tainted: [W]=WARN
[  105.353893][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 105.354173][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 105.354474][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  105.355298][  T228] RSP: 0018:ffffc90000b47520 EFLAGS: 00010246
[  105.355603][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  105.355947][  T228] RDX: 0000000000000000 RSI: ffff88800ad82c98 RDI: ffff88800b4c0b78
[  105.356300][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[  105.356696][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[  105.357034][  T228] R13: ffff88800ad82128 R14: ffff88800ad82008 R15: ffff88800ad82000
[  105.357391][  T228] FS:  00007fcacc097740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  105.357791][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  105.358092][  T228] CR2: 00007f1e806f2a00 CR3: 000000000a032005 CR4: 0000000000772ef0
[  105.358455][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  105.359074][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  105.359422][  T228] PKRU: 55555554
[  105.359600][  T228] Call Trace:
[  105.359773][  T228]  <TASK>
[ 105.359890][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 105.360120][ T228] ? __warn (kernel/panic.c:748) 
[ 105.360318][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 105.360565][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 105.360803][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 105.360983][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 105.361247][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 105.361502][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 105.361743][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 105.362033][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 105.362297][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 105.362551][ T228] register_netdevice (net/core/dev.c:11003) 
[ 105.362792][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 105.363037][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 105.363302][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 105.363608][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 105.363791][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 105.364119][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 105.364434][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 105.364760][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 105.365000][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 105.365310][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 105.365567][ T228] ? 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)) 
[ 105.365745][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 105.366009][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 105.366250][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 105.366495][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 105.366745][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 105.366976][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 105.367319][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 105.367560][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 105.367801][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 105.368026][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 105.368251][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 105.368514][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 105.368745][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 105.368993][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 105.369239][ T228] ? 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) 
[ 105.369490][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 105.369739][ T228] device_add (drivers/base/core.c:3672) 
[ 105.369990][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 105.370227][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 105.370473][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 105.370796][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 105.371100][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 105.371343][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 105.371597][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 105.371822][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 105.372053][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 105.372234][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 105.372474][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 105.372719][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 105.372953][ T228] ksys_write (fs/read_write.c:731) 
[ 105.373126][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 105.373375][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 105.373606][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  105.373888][  T228] RIP: 0033:0x7fcacc1d8b77
[ 105.374122][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  105.374900][  T228] RSP: 002b:00007ffeb53a7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  105.375221][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fcacc1d8b77
[  105.375546][  T228] RDX: 0000000000000004 RSI: 000055b1da12b330 RDI: 0000000000000001
[  105.375872][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[  105.376182][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000004
[  105.376501][  T228] R13: 00007fcacc294760 R14: 0000000000000004 R15: 00007fcacc28f9c0
| [  105.424649][  T228] ------------[ cut here ]------------
| [ 105.425029][ T228] WARNING: CPU: 3 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  105.425503][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  105.426458][  T228] Tainted: [W]=WARN
[  105.426626][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 105.426901][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 105.427256][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  105.428161][  T228] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  105.428449][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  105.428777][  T228] RDX: 0000000000000000 RSI: ffff88800c232c98 RDI: ffff88800b4c0b28
[  105.429116][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[  105.429460][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[  105.429790][  T228] R13: ffff88800c232128 R14: ffff88800c232008 R15: ffff88800c232000
[  105.430138][  T228] FS:  00007fcacc097740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  105.430560][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  105.430853][  T228] CR2: 00007f1e8087fa30 CR3: 000000000a032002 CR4: 0000000000772ef0
[  105.431224][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  105.431846][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  105.432248][  T228] PKRU: 55555554
[  105.432533][  T228] Call Trace:
[  105.432804][  T228]  <TASK>
[ 105.432935][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 105.433190][ T228] ? __warn (kernel/panic.c:748) 
[ 105.433381][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 105.433613][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 105.433842][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 105.434019][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 105.434271][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 105.434518][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 105.434760][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 105.435039][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 105.435286][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 105.435521][ T228] register_netdevice (net/core/dev.c:11003) 
[ 105.435744][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 105.436007][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 105.436385][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 105.436676][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 105.436986][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 105.437288][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 105.437514][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 105.437745][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 105.438027][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 105.438238][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 105.438455][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 105.438849][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 105.439059][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 105.439240][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 105.439461][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 105.439679][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 105.440011][ T228] ksys_write (fs/read_write.c:731) 
[ 105.440194][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 105.440421][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 105.440626][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  105.440991][  T228] RIP: 0033:0x7fcacc1d8b77
[ 105.441267][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  105.442020][  T228] RSP: 002b:00007ffeb53a4b98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  105.442362][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcacc1d8b77
[  105.442675][  T228] RDX: 0000000000000002 RSI: 000055b1da12b330 RDI: 0000000000000001
[  105.442995][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[  105.443318][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000002
[  105.443767][  T228] R13: 00007fcacc294760 R14: 0000000000000002 R15: 00007fcacc28f9c0
| [  108.222709][  T228] ------------[ cut here ]------------
| [ 108.222996][ T228] WARNING: CPU: 3 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  108.223463][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  108.224297][  T228] Tainted: [W]=WARN
[  108.224489][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 108.224773][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 108.225040][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  108.225781][  T228] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  108.226043][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  108.226372][  T228] RDX: 0000000000000000 RSI: ffff8880097cac98 RDI: ffff88800b4c0b28
[  108.226711][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[  108.227029][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[  108.227409][  T228] R13: ffff8880097ca128 R14: ffff8880097ca008 R15: ffff8880097ca000
[  108.227751][  T228] FS:  00007fcacc097740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  108.228140][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  108.228464][  T228] CR2: 00007f69b7a04000 CR3: 000000000a032006 CR4: 0000000000772ef0
[  108.228806][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  108.229147][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  108.229498][  T228] PKRU: 55555554
[  108.229668][  T228] Call Trace:
[  108.229845][  T228]  <TASK>
[ 108.229962][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 108.230205][ T228] ? __warn (kernel/panic.c:748) 
[ 108.230396][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 108.230662][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 108.230897][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 108.231075][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 108.231305][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 108.231568][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 108.231807][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 108.232085][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 108.232301][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 108.232533][ T228] register_netdevice (net/core/dev.c:11003) 
[ 108.232750][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 108.232983][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 108.233221][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 108.233531][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 108.233841][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 108.234129][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 108.234373][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 108.234641][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 108.234935][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 108.235174][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 108.235416][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 108.235646][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 108.235876][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 108.236058][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 108.236291][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 108.236553][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 108.236799][ T228] ksys_write (fs/read_write.c:731) 
[ 108.236974][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 108.237211][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 108.237455][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  108.237735][  T228] RIP: 0033:0x7fcacc1d8b77
[ 108.237964][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  108.238807][  T228] RSP: 002b:00007ffeb53a4b98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  108.239153][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcacc1d8b77
[  108.239528][  T228] RDX: 0000000000000002 RSI: 000055b1da12b330 RDI: 0000000000000001
[  108.239869][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[  108.240223][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000002
[  108.240576][  T228] R13: 00007fcacc294760 R14: 0000000000000002 R15: 00007fcacc28f9c0
| [  110.880671][  T228] ------------[ cut here ]------------
| [ 110.881092][ T228] WARNING: CPU: 3 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  110.881560][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  110.882550][  T228] Tainted: [W]=WARN
[  110.882726][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 110.883011][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 110.883334][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  110.884111][  T228] RSP: 0018:ffffc90000b47520 EFLAGS: 00010246
[  110.884407][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  110.884742][  T228] RDX: 0000000000000000 RSI: ffff888009bb2c98 RDI: ffff88800b4c0b78
[  110.885409][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[  110.885746][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[  110.886106][  T228] R13: ffff888009bb2128 R14: ffff888009bb2008 R15: ffff888009bb2000
[  110.886450][  T228] FS:  00007fcacc097740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  110.886834][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  110.887116][  T228] CR2: 00007f418afec000 CR3: 000000000a032002 CR4: 0000000000772ef0
[  110.887491][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  110.887842][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  110.888173][  T228] PKRU: 55555554
[  110.888357][  T228] Call Trace:
[  110.888537][  T228]  <TASK>
[ 110.888657][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 110.888884][ T228] ? __warn (kernel/panic.c:748) 
[ 110.889071][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 110.889302][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 110.889545][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 110.889725][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 110.889947][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 110.890196][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 110.890452][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 110.890755][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 110.890990][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 110.891215][ T228] register_netdevice (net/core/dev.c:11003) 
[ 110.891461][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 110.891750][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 110.892010][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 110.892300][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 110.892492][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 110.892786][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 110.893070][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 110.893376][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 110.893623][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 110.893906][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 110.894132][ T228] ? 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)) 
[ 110.894302][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 110.894548][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 110.894786][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 110.895017][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 110.895252][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 110.895491][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 110.895767][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 110.895992][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 110.896211][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 110.896444][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 110.896688][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 110.896919][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 110.897145][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 110.897383][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 110.897610][ T228] ? 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) 
[ 110.897843][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 110.898068][ T228] device_add (drivers/base/core.c:3672) 
[ 110.898294][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 110.898547][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 110.898800][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 110.899088][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 110.899384][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 110.899608][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 110.899837][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 110.900067][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 110.900317][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 110.900506][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 110.900733][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 110.900965][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 110.901194][ T228] ksys_write (fs/read_write.c:731) 
[ 110.901377][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 110.901618][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 110.901855][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  110.902133][  T228] RIP: 0033:0x7fcacc1d8b77
[ 110.902380][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  110.903159][  T228] RSP: 002b:00007ffeb53a7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  110.903523][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fcacc1d8b77
[  110.903857][  T228] RDX: 0000000000000004 RSI: 000055b1da12b330 RDI: 0000000000000001
[  110.904191][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[  110.904531][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000004
[  110.904866][  T228] R13: 00007fcacc294760 R14: 0000000000000004 R15: 00007fcacc28f9c0
| [  110.951776][  T228] ------------[ cut here ]------------
| [ 110.952123][ T228] WARNING: CPU: 3 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  110.952636][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  110.953593][  T228] Tainted: [W]=WARN
[  110.953767][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 110.954053][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 110.954343][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  110.955119][  T228] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  110.955435][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  110.955744][  T228] RDX: 0000000000000000 RSI: ffff888005142c98 RDI: ffff88800b4c0b28
[  110.956077][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[  110.956396][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[  110.956702][  T228] R13: ffff888005142128 R14: ffff888005142008 R15: ffff888005142000
[  110.957015][  T228] FS:  00007fcacc097740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  110.957400][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  110.957665][  T228] CR2: 00007fcacc0f3330 CR3: 000000000a032002 CR4: 0000000000772ef0
[  110.957987][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  110.958305][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  110.958628][  T228] PKRU: 55555554
[  110.958787][  T228] Call Trace:
[  110.959120][  T228]  <TASK>
[ 110.959235][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 110.959500][ T228] ? __warn (kernel/panic.c:748) 
[ 110.959667][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 110.959898][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 110.960144][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 110.960313][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 110.960565][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 110.960825][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 110.961070][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 110.961359][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 110.961599][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 110.961819][ T228] register_netdevice (net/core/dev.c:11003) 
[ 110.962065][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 110.962296][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 110.962548][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 110.962841][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 110.963143][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 110.963453][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 110.963657][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 110.963896][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 110.964173][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 110.964399][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 110.964609][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 110.964820][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 110.965047][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 110.965232][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 110.965478][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 110.965861][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 110.966103][ T228] ksys_write (fs/read_write.c:731) 
[ 110.966274][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 110.966545][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 110.966763][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  110.967149][  T228] RIP: 0033:0x7fcacc1d8b77
[ 110.967420][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  110.968419][  T228] RSP: 002b:00007ffeb53a46d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  110.968755][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcacc1d8b77
[  110.969111][  T228] RDX: 0000000000000002 RSI: 000055b1da12b330 RDI: 0000000000000001
[  110.969442][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[  110.969776][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000002
[  110.970089][  T228] R13: 00007fcacc294760 R14: 0000000000000002 R15: 00007fcacc28f9c0
| [  113.606776][  T228] ------------[ cut here ]------------
| [ 113.607034][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  113.607461][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  113.608338][  T228] Tainted: [W]=WARN
[  113.608508][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 113.608773][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 113.609043][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  113.610002][  T228] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  113.610300][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  113.610626][  T228] RDX: 0000000000000000 RSI: ffff8880089f2c98 RDI: ffff88800b4c0b28
[  113.610971][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[  113.611303][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[  113.611642][  T228] R13: ffff8880089f2128 R14: ffff8880089f2008 R15: ffff8880089f2000
[  113.611962][  T228] FS:  00007fcacc097740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  113.612358][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  113.612629][  T228] CR2: 00007ffeb53a3ec0 CR3: 000000000a032003 CR4: 0000000000772ef0
[  113.612947][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  113.613284][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  113.613630][  T228] PKRU: 55555554
[  113.613794][  T228] Call Trace:
[  113.613955][  T228]  <TASK>
[ 113.614078][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 113.614310][ T228] ? __warn (kernel/panic.c:748) 
[ 113.614485][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 113.614698][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 113.614919][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 113.615082][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 113.615310][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 113.615562][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 113.615799][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 113.616069][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 113.616294][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 113.616537][ T228] register_netdevice (net/core/dev.c:11003) 
[ 113.616781][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 113.617011][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 113.617343][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 113.617637][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 113.617953][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 113.618240][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 113.618476][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 113.618704][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 113.618999][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 113.619221][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 113.619451][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 113.619672][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 113.619902][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 113.620086][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 113.620337][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 113.620571][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 113.620812][ T228] ksys_write (fs/read_write.c:731) 
[ 113.620987][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 113.621231][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 113.621479][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  113.621778][  T228] RIP: 0033:0x7fcacc1d8b77
[ 113.622023][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  113.622802][  T228] RSP: 002b:00007ffeb53a46d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  113.623147][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcacc1d8b77
[  113.623489][  T228] RDX: 0000000000000002 RSI: 000055b1da12b330 RDI: 0000000000000001
[  113.623812][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[  113.624139][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000002
[  113.624488][  T228] R13: 00007fcacc294760 R14: 0000000000000002 R15: 00007fcacc28f9c0
| [  116.119023][  T228] ------------[ cut here ]------------
| [ 116.119457][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  116.119910][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  116.121423][  T228] Tainted: [W]=WARN
[  116.121596][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 116.121875][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 116.122161][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  116.123186][  T228] RSP: 0018:ffffc90000b47520 EFLAGS: 00010246
[  116.123494][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  116.123830][  T228] RDX: 0000000000000000 RSI: ffff88800ad82c98 RDI: ffff88800b4c0b78
[  116.124169][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[  116.124512][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[  116.124848][  T228] R13: ffff88800ad82128 R14: ffff88800ad82008 R15: ffff88800ad82000
[  116.125191][  T228] FS:  00007fcacc097740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  116.125594][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  116.125880][  T228] CR2: 000055b1da102000 CR3: 000000000a032001 CR4: 0000000000772ef0
[  116.126215][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  116.126581][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  116.126922][  T228] PKRU: 55555554
[  116.127101][  T228] Call Trace:
[  116.127272][  T228]  <TASK>
[ 116.127402][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 116.127636][ T228] ? __warn (kernel/panic.c:748) 
[ 116.127814][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 116.128044][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 116.128278][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 116.128466][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 116.128693][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 116.128931][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 116.129174][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 116.129479][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 116.129719][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 116.129955][ T228] register_netdevice (net/core/dev.c:11003) 
[ 116.130199][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 116.130467][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 116.130720][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 116.131016][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 116.131197][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 116.131513][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 116.131814][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 116.132108][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 116.132362][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 116.132648][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 116.132892][ T228] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 116.133072][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 116.133607][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 116.133846][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 116.134077][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 116.134303][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 116.134563][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 116.134841][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 116.135065][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 116.135298][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 116.135542][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 116.135768][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 116.135996][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 116.136219][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 116.136456][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 116.136680][ T228] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 116.136922][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 116.137149][ T228] device_add (drivers/base/core.c:3672) 
[ 116.137388][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 116.137611][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 116.137846][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 116.138144][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 116.138462][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 116.138699][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 116.138928][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 116.139156][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 116.139397][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 116.139578][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 116.139823][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 116.140041][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 116.140280][ T228] ksys_write (fs/read_write.c:731) 
[ 116.140456][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 116.140683][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 116.140900][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  116.141160][  T228] RIP: 0033:0x7fcacc1d8b77
[ 116.141396][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  116.142120][  T228] RSP: 002b:00007ffeb53a7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  116.142462][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fcacc1d8b77
[  116.142776][  T228] RDX: 0000000000000004 RSI: 000055b1da12b330 RDI: 0000000000000001
[  116.143095][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[  116.143417][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000004
[  116.143743][  T228] R13: 00007fcacc294760 R14: 0000000000000004 R15: 00007fcacc28f9c0
| [  116.197757][  T228] ------------[ cut here ]------------
| [ 116.198090][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  116.198832][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  116.199645][  T228] Tainted: [W]=WARN
[  116.199816][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 116.200056][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 116.200316][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  116.200988][  T228] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  116.201256][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  116.201577][  T228] RDX: 0000000000000000 RSI: ffff88800c232c98 RDI: ffff88800b4c0b28
[  116.201869][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[  116.202150][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[  116.202494][  T228] R13: ffff88800c232128 R14: ffff88800c232008 R15: ffff88800c232000
[  116.202773][  T228] FS:  00007fcacc097740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  116.203094][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  116.203343][  T228] CR2: 000055b1da102000 CR3: 000000000a032002 CR4: 0000000000772ef0
[  116.203630][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  116.203906][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  116.204186][  T228] PKRU: 55555554
[  116.204359][  T228] Call Trace:
[  116.204503][  T228]  <TASK>
[ 116.204601][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 116.204795][ T228] ? __warn (kernel/panic.c:748) 
[ 116.204950][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 116.205468][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 116.205668][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 116.205825][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 116.206012][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 116.206215][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 116.206424][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 116.206666][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 116.206861][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 116.207055][ T228] register_netdevice (net/core/dev.c:11003) 
[ 116.207251][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 116.207464][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 116.207672][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 116.207925][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 116.208185][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 116.208443][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 116.208637][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 116.208835][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 116.209080][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 116.209275][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 116.209477][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 116.209676][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 116.209869][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 116.210022][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 116.210555][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 116.210772][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 116.210992][ T228] ksys_write (fs/read_write.c:731) 
[ 116.211161][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 116.211390][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 116.211601][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  116.211857][  T228] RIP: 0033:0x7fcacc1d8b77
[ 116.212074][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  116.212837][  T228] RSP: 002b:00007ffeb53a4938 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  116.213121][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcacc1d8b77
[  116.213417][  T228] RDX: 0000000000000002 RSI: 000055b1da12b330 RDI: 0000000000000001
[  116.213703][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[  116.213993][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000002
[  116.214273][  T228] R13: 00007fcacc294760 R14: 0000000000000002 R15: 00007fcacc28f9c0
| [  118.542397][  T228] ------------[ cut here ]------------
| [ 118.542791][ T228] WARNING: CPU: 1 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  118.543670][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  118.545138][  T228] Tainted: [W]=WARN
[  118.545579][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 118.545971][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 118.546622][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  118.547975][  T228] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  118.548864][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  118.549560][  T228] RDX: 0000000000000000 RSI: ffff8880097cac98 RDI: ffff88800b4c0b28
[  118.550016][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[  118.550696][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[  118.551143][  T228] R13: ffff8880097ca128 R14: ffff8880097ca008 R15: ffff8880097ca000
[  118.551755][  T228] FS:  00007fcacc097740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  118.552308][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  118.552866][  T228] CR2: 000055b1da10a1e8 CR3: 000000000a032001 CR4: 0000000000772ef0
[  118.553481][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  118.553947][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  118.554580][  T228] PKRU: 55555554
[  118.554817][  T228] Call Trace:
[  118.555058][  T228]  <TASK>
[ 118.555227][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 118.555764][ T228] ? __warn (kernel/panic.c:748) 
[ 118.556024][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 118.556625][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 118.556978][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 118.557230][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 118.557870][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 118.558247][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 118.558894][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 118.559562][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 118.559909][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 118.560276][ T228] register_netdevice (net/core/dev.c:11003) 
[ 118.560847][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 118.561224][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 118.561622][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 118.562074][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 118.562559][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 118.563009][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 118.563369][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 118.563721][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 118.564155][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 118.564497][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 118.564831][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 118.565177][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 118.565538][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 118.565812][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 118.566160][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 118.566537][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 118.566893][ T228] ksys_write (fs/read_write.c:731) 
[ 118.567148][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 118.567521][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 118.567880][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  118.568301][  T228] RIP: 0033:0x7fcacc1d8b77
[ 118.568650][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  118.569792][  T228] RSP: 002b:00007ffeb53a4938 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  118.570316][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcacc1d8b77
[  118.570818][  T228] RDX: 0000000000000002 RSI: 000055b1da12b330 RDI: 0000000000000001
[  118.571303][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[  118.571812][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000002
[  118.572310][  T228] R13: 00007fcacc294760 R14: 0000000000000002 R15: 00007fcacc28f9c0
| [  120.624351][  T228] ------------[ cut here ]------------
| [ 120.624851][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  120.625384][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  120.626456][  T228] Tainted: [W]=WARN
[  120.626726][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 120.627114][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.627581][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  120.628532][  T228] RSP: 0018:ffffc90000b47520 EFLAGS: 00010246
[  120.628881][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  120.629253][  T228] RDX: 0000000000000000 RSI: ffff888009bb2c98 RDI: ffff88800b4c0b78
[  120.629690][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[  120.630130][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[  120.630606][  T228] R13: ffff888009bb2128 R14: ffff888009bb2008 R15: ffff888009bb2000
[  120.631019][  T228] FS:  00007fcacc097740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  120.631518][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  120.631942][  T228] CR2: 000055b1da102000 CR3: 000000000a032004 CR4: 0000000000772ef0
[  120.632423][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  120.632892][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  120.633261][  T228] PKRU: 55555554
[  120.633516][  T228] Call Trace:
[  120.633730][  T228]  <TASK>
[ 120.633871][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.634142][ T228] ? __warn (kernel/panic.c:748) 
[ 120.634383][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.634636][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 120.634873][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 120.635047][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 120.635277][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 120.635902][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.636193][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 120.636551][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 120.636825][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 120.637092][ T228] register_netdevice (net/core/dev.c:11003) 
[ 120.637462][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 120.637729][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 120.638006][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 120.638350][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 120.638566][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 120.638915][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 120.639267][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 120.639621][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 120.639889][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 120.640217][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 120.640550][ T228] ? 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)) 
[ 120.640755][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 120.641043][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 120.641311][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 120.641664][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 120.641940][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 120.642226][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 120.642592][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 120.642886][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 120.643139][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 120.643380][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 120.643673][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 120.643912][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 120.644138][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 120.644373][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 120.644599][ T228] ? 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) 
[ 120.644836][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 120.645064][ T228] device_add (drivers/base/core.c:3672) 
[ 120.645290][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 120.645543][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 120.645783][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 120.646075][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 120.646377][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 120.646636][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 120.646883][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 120.647137][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 120.647386][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 120.647577][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 120.647821][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 120.648073][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 120.648364][ T228] ksys_write (fs/read_write.c:731) 
[ 120.648573][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 120.648844][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 120.649094][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  120.649438][  T228] RIP: 0033:0x7fcacc1d8b77
[ 120.649704][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  120.650555][  T228] RSP: 002b:00007ffeb53a7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  120.650932][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fcacc1d8b77
[  120.651358][  T228] RDX: 0000000000000004 RSI: 000055b1da12b330 RDI: 0000000000000001
[  120.651773][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[  120.652210][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000004
[  120.652630][  T228] R13: 00007fcacc294760 R14: 0000000000000004 R15: 00007fcacc28f9c0
| [  120.808626][  T228] ------------[ cut here ]------------
| [ 120.809124][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  120.809805][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  120.811117][  T228] Tainted: [W]=WARN
[  120.811385][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 120.811786][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.812199][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  120.813312][  T228] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  120.813725][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  120.814246][  T228] RDX: 0000000000000000 RSI: ffff888005142c98 RDI: ffff88800b4c0b28
[  120.814736][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[  120.815271][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[  120.815783][  T228] R13: ffff888005142128 R14: ffff888005142008 R15: ffff888005142000
[  120.816293][  T228] FS:  00007fcacc097740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  120.816895][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  120.817323][  T228] CR2: 000055b1da12b330 CR3: 000000000a032006 CR4: 0000000000772ef0
[  120.818187][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  120.818688][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  120.819159][  T228] PKRU: 55555554
[  120.819420][  T228] Call Trace:
[  120.819669][  T228]  <TASK>
[ 120.819838][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.820182][ T228] ? __warn (kernel/panic.c:748) 
[ 120.820448][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.820785][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 120.821125][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 120.821383][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 120.821707][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 120.822054][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.822406][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 120.822801][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 120.823136][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 120.823468][ T228] register_netdevice (net/core/dev.c:11003) 
[ 120.823791][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 120.824123][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 120.824479][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 120.824888][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 120.825344][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 120.825766][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 120.826087][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 120.826442][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 120.826846][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 120.827165][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 120.827501][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 120.827819][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 120.828148][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 120.828408][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 120.828747][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 120.829071][ T228] ? 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) 
[ 120.829428][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 120.829771][ T228] ksys_write (fs/read_write.c:731) 
[ 120.830028][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 120.830367][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 120.830698][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 120.831032][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  120.831444][  T228] RIP: 0033:0x7fcacc1d8b77
[ 120.831776][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  120.832870][  T228] RSP: 002b:00007ffeb53a7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  120.833356][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcacc1d8b77
[  120.833823][  T228] RDX: 0000000000000002 RSI: 000055b1da12b330 RDI: 0000000000000001
[  120.834301][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[  120.834783][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000002
[  120.835250][  T228] R13: 00007fcacc294760 R14: 0000000000000002 R15: 00007fcacc28f9c0
| [  121.531943][  T228] ------------[ cut here ]------------
| [ 121.532288][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  121.533268][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  121.534678][  T228] Tainted: [W]=WARN
[  121.534931][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 121.535372][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 121.535810][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  121.536982][  T228] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  121.537420][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  121.537906][  T228] RDX: 0000000000000000 RSI: ffff8880089f2c98 RDI: ffff88800b4c0b28
[  121.538406][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[  121.538906][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[  121.539405][  T228] R13: ffff8880089f2128 R14: ffff8880089f2008 R15: ffff8880089f2000
[  121.539895][  T228] FS:  00007fcacc097740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  121.540500][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  121.540918][  T228] CR2: 000055b1da12b330 CR3: 000000000a032004 CR4: 0000000000772ef0
[  121.541428][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  121.541922][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  121.542439][  T228] PKRU: 55555554
[  121.542694][  T228] Call Trace:
[  121.542949][  T228]  <TASK>
[ 121.543122][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 121.543475][ T228] ? __warn (kernel/panic.c:748) 
[ 121.543738][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 121.544077][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 121.544438][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 121.544705][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 121.545047][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 121.545427][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 121.545784][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 121.546215][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 121.546578][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 121.546928][ T228] register_netdevice (net/core/dev.c:11003) 
[ 121.547280][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 121.547651][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 121.548018][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 121.548472][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 121.548945][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 121.549413][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 121.549769][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 121.550181][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 121.550637][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 121.550974][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 121.551313][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 121.551673][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 121.552027][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 121.552309][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 121.552672][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 121.553012][ T228] ? 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) 
[ 121.553378][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 121.553733][ T228] ksys_write (fs/read_write.c:731) 
[ 121.553994][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 121.554342][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 121.554696][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 121.555046][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  121.555476][  T228] RIP: 0033:0x7fcacc1d8b77
[ 121.555827][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  121.557037][  T228] RSP: 002b:00007ffeb53a7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  121.557569][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcacc1d8b77
[  121.558066][  T228] RDX: 0000000000000002 RSI: 000055b1da12b330 RDI: 0000000000000001
[  121.558576][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[  121.559066][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000002
[  121.559577][  T228] R13: 00007fcacc294760 R14: 0000000000000002 R15: 00007fcacc28f9c0
| [  130.047692][  T228] ------------[ cut here ]------------
| [ 130.048161][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  130.048860][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  130.050285][  T228] Tainted: [W]=WARN
[  130.050589][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 130.051012][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 130.051498][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  130.052686][  T228] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  130.053117][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  130.053658][  T228] RDX: 0000000000000000 RSI: ffff88800ad82c98 RDI: ffff88800b4c0b28
[  130.054179][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[  130.054724][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[  130.055242][  T228] R13: ffff88800ad82128 R14: ffff88800ad82008 R15: ffff88800ad82000
[  130.055791][  T228] FS:  00007fcacc097740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  130.056416][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  130.056866][  T228] CR2: 00007fb530ff31b4 CR3: 000000000a032001 CR4: 0000000000772ef0
[  130.057414][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  130.057945][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  130.058495][  T228] PKRU: 55555554
[  130.058777][  T228] Call Trace:
[  130.059050][  T228]  <TASK>
[ 130.059256][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 130.059644][ T228] ? __warn (kernel/panic.c:748) 
[ 130.059941][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 130.060359][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 130.060741][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 130.061031][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 130.061455][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 130.061855][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 130.062239][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 130.062719][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 130.063096][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 130.063483][ T228] register_netdevice (net/core/dev.c:11003) 
[ 130.063860][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 130.064259][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 130.064681][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 130.065158][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 130.065698][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 130.066167][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 130.066553][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 130.066917][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 130.067389][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 130.067741][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 130.068105][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 130.068504][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 130.068910][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 130.069222][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 130.069629][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 130.070070][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 130.070492][ T228] ksys_write (fs/read_write.c:731) 
[ 130.070794][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 130.071183][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 130.071581][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  130.072028][  T228] RIP: 0033:0x7fcacc1d8b77
[ 130.072419][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  130.073643][  T228] RSP: 002b:00007ffeb53a7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  130.074184][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcacc1d8b77
[  130.074727][  T228] RDX: 0000000000000002 RSI: 000055b1da12b330 RDI: 0000000000000001
[  130.075245][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[  130.075786][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000002
[  130.076306][  T228] R13: 00007fcacc294760 R14: 0000000000000002 R15: 00007fcacc28f9c0
| [  132.714129][  T228] ------------[ cut here ]------------
| [ 132.714546][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  132.715177][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  132.716083][  T228] Tainted: [W]=WARN
[  132.716254][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 132.716552][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 132.716832][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  132.717643][  T228] RSP: 0018:ffffc90000b47520 EFLAGS: 00010246
[  132.717919][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  132.718251][  T228] RDX: 0000000000000000 RSI: ffff8880097cac98 RDI: ffff88800b4c0b78
[  132.718584][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[  132.718901][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[  132.719219][  T228] R13: ffff8880097ca128 R14: ffff8880097ca008 R15: ffff8880097ca000
[  132.719548][  T228] FS:  00007fcacc097740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  132.719912][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  132.720196][  T228] CR2: 00007f1e805025a0 CR3: 000000000a032003 CR4: 0000000000772ef0
[  132.720528][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  132.720840][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  132.721155][  T228] PKRU: 55555554
[  132.721315][  T228] Call Trace:
[  132.721489][  T228]  <TASK>
[ 132.721597][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 132.721814][ T228] ? __warn (kernel/panic.c:748) 
[ 132.722004][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 132.722235][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 132.722471][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 132.722637][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 132.722848][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 132.723078][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 132.723300][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 132.723585][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 132.723826][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 132.724071][ T228] register_netdevice (net/core/dev.c:11003) 
[ 132.724313][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 132.724573][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 132.724829][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 132.725118][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 132.725299][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 132.725609][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 132.725901][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 132.726197][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 132.726451][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 132.726746][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 132.726983][ T228] ? 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)) 
[ 132.727204][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 132.727459][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 132.727707][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 132.727938][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 132.728166][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 132.728417][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 132.728697][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 132.728933][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 132.729151][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 132.729375][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 132.729602][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 132.729826][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 132.730066][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 132.730279][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 132.730510][ T228] ? 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) 
[ 132.730732][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 132.730950][ T228] device_add (drivers/base/core.c:3672) 
[ 132.731172][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 132.731396][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 132.731623][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 132.731897][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 132.732198][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 132.732441][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 132.732675][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 132.732901][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 132.733134][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 132.733315][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 132.733579][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 132.733800][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 132.734026][ T228] ksys_write (fs/read_write.c:731) 
[ 132.734189][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 132.734457][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 132.734689][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  132.734970][  T228] RIP: 0033:0x7fcacc1d8b77
[ 132.735203][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  132.735998][  T228] RSP: 002b:00007ffeb53a7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  132.736350][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fcacc1d8b77
[  132.736708][  T228] RDX: 0000000000000004 RSI: 000055b1da12b330 RDI: 0000000000000001
[  132.737025][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[  132.737378][  T228] R10: 00007fcacc24b3e0 R11: 0000000000000246 R12: 0000000000000004
[  132.737698][  T228] R13: 00007fcacc294760 R14: 0000000000000004 R15: 00007fcacc28f9c0
| [  132.919020][  T228] ------------[ cut here ]------------
| [ 132.919513][ T228] WARNING: CPU: 1 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  132.919927][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  132.920923][  T228] Tainted: [W]=WARN
[  132.921100][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 132.921449][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 132.921738][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  132.922453][  T228] RSP: 0018:ffffc90000b47910 EFLAGS: 00010246
[  132.922695][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  132.922984][  T228] RDX: 0000000000000000 RSI: ffff88801627ac98 RDI: ffff88800b4c0b28
[  132.923278][  T228] RBP: ffffffff9a323440 R08: 0000000000000000 R09: fffffbfff303d83c
[  132.923583][  T228] R10: ffffffff981ec1e7 R11: ffff88800b4c0040 R12: 0000000000000000
[  132.923893][  T228] R13: ffff88801627a128 R14: ffff88801627a008 R15: ffff88801627a000
[  132.924177][  T228] FS:  00007fcacc097740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  132.924536][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  132.924782][  T228] CR2: 00007fcacc24b733 CR3: 000000000a032006 CR4: 0000000000772ef0
[  132.925069][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  132.925658][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  132.925950][  T228] PKRU: 55555554
[  132.926099][  T228] Call Trace:
[  132.926257][  T228]  <TASK>
[ 132.926422][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 132.926630][ T228] ? __warn (kernel/panic.c:748) 
[ 132.926784][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 132.926979][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 132.927189][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 132.927373][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 132.927582][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 132.927788][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 132.927995][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 132.928254][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 132.928479][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 132.928678][ T228] register_netdevice (net/core/dev.c:11003) 
[ 132.928889][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 132.929097][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 132.929317][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 132.929579][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 132.929843][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 132.930113][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 132.930386][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 132.930593][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 132.930837][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 132.931028][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 132.931216][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 132.931454][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 132.931655][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 132.931821][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 132.932029][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 132.932231][ T228] ? 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) 
[ 132.932461][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 132.932665][ T228] ksys_write (fs/read_write.c:731) 
[ 132.932818][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 132.933006][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 132.933203][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 132.933433][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  132.933665][  T228] RIP: 0033:0x7fcacc1d8b77
[ 132.933862][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  132.934574][  T228] RSP: 002b:00007ffeb53a7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  132.934869][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcacc1d8b77
[  132.935148][  T228] RDX: 0000000000000002 RSI: 000055b1da12b330 RDI: 0000000000000001
[  132.935458][  T228] RBP: 000055b1da12b330 R08: 0000000000000000 R09: 00007fcacc24b4e0
[  132.935741][  T228] R10: 00007fcacc24b3e0 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