======================================
| 0
| xx__-> [   11.291640][  T228] ------------[ cut here ]------------
| [ 11.292185][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [   11.292922][  T228] Modules linked in: netdevsim
[   11.293824][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 11.294141][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 11.294505][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   11.295460][  T228] RSP: 0018:ffffc90000b07520 EFLAGS: 00010246
[   11.295759][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   11.296138][  T228] RDX: 0000000000000000 RSI: ffff88800a2a2c98 RDI: ffff888008cdae38
[   11.296539][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[   11.296906][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[   11.297287][  T228] R13: ffff88800a2a2128 R14: ffff88800a2a2008 R15: ffff88800a2a2000
[   11.297653][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   11.298068][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   11.298380][  T228] CR2: 0000556eab589338 CR3: 0000000008e14004 CR4: 0000000000772ef0
[   11.298758][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   11.299129][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   11.299509][  T228] PKRU: 55555554
[   11.299697][  T228] Call Trace:
[   11.299877][  T228]  <TASK>
[ 11.300017][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 11.300305][ T228] ? __warn (kernel/panic.c:748) 
[ 11.300548][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 11.300787][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 11.301058][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 11.301276][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 11.301537][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 11.301793][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 11.302055][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 11.302401][ 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) 
[ 11.302664][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 11.302957][ T228] register_netdevice (net/core/dev.c:11033) 
[ 11.303254][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 11.303557][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 11.303825][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 11.304176][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 11.304396][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 11.304778][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 11.305153][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 11.305510][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 11.305783][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 11.306129][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 11.306415][ 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)) 
[ 11.306629][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 11.306927][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 11.307215][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 11.307495][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 11.307775][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 11.308044][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 11.308338][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 11.308604][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 11.308859][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 11.309131][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 11.309394][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 11.309647][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 11.309893][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 11.310126][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 11.310371][ 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) 
[ 11.310632][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 11.310900][ T228] device_add (drivers/base/core.c:3672) 
[ 11.311148][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 11.311408][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 11.311686][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 11.312025][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 11.312353][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 11.312619][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 11.312910][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 11.313203][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 11.313441][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 11.313628][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 11.313880][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 11.314132][ 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) 
[ 11.314438][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 11.314698][ T228] ksys_write (fs/read_write.c:731) 
[ 11.314904][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 11.315162][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 11.315461][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 11.315752][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   11.316133][  T228] RIP: 0033:0x7f86fa3e7b77
[ 11.316434][ 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
[   11.317408][  T228] RSP: 002b:00007ffeff205698 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   11.317822][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f86fa3e7b77
[   11.318286][  T228] RDX: 0000000000000004 RSI: 0000556eab588330 RDI: 0000000000000001
[   11.318953][  T228] RBP: 0000556eab588330 R08: 0000000000000003 R09: 0000000000000077
[   11.319342][  T228] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000004
[   11.319731][  T228] R13: 00007f86fa4a3760 R14: 0000000000000004 R15: 00007f86fa49e9c0
| [   17.636864][  T228] ------------[ cut here ]------------
| [ 17.637310][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [   17.637777][  T228] Modules linked in: netdevsim [last unloaded: ip6_udp_tunnel]
| [   17.638597][  T228] Tainted: [W]=WARN
[   17.638802][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 17.639107][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 17.639428][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   17.640208][  T228] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[   17.640529][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   17.640874][  T228] RDX: 0000000000000000 RSI: ffff88800dd62c98 RDI: ffff888008cdade8
[   17.641294][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[   17.641609][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[   17.641957][  T228] R13: ffff88800dd62128 R14: ffff88800dd62008 R15: ffff88800dd62000
[   17.642326][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   17.642930][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.643273][  T228] CR2: 0000556eab588330 CR3: 0000000008e14002 CR4: 0000000000772ef0
[   17.643632][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   17.643980][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   17.644368][  T228] PKRU: 55555554
[   17.644568][  T228] Call Trace:
[   17.644779][  T228]  <TASK>
[ 17.644920][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 17.645194][ T228] ? __warn (kernel/panic.c:748) 
[ 17.645389][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 17.645660][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 17.645918][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 17.646122][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 17.646426][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 17.646728][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 17.646986][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 17.647309][ 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) 
[ 17.647594][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 17.647848][ T228] register_netdevice (net/core/dev.c:11033) 
[ 17.648104][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 17.648504][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 17.648761][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 17.649081][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 17.649454][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 17.649753][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 17.650011][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 17.650276][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 17.650592][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 17.650911][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 17.651185][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 17.651391][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 17.651637][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 17.651881][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 17.652143][ T228] ksys_write (fs/read_write.c:731) 
[ 17.652346][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 17.652589][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 17.652806][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   17.653073][  T228] RIP: 0033:0x7f86fa3e7b77
[ 17.653304][ 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
[   17.654042][  T228] RSP: 002b:00007ffeff205598 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   17.654377][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f86fa3e7b77
[   17.654721][  T228] RDX: 0000000000000002 RSI: 0000556eab588330 RDI: 0000000000000001
[   17.655035][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[   17.655341][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000002
[   17.655637][  T228] R13: 00007f86fa4a3760 R14: 0000000000000002 R15: 00007f86fa49e9c0
| [   23.911681][  T228] ------------[ cut here ]------------
| [ 23.912279][ T228] WARNING: CPU: 1 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [   23.912935][  T228] Modules linked in: netdevsim [last unloaded: netdevsim]
| [   23.913840][  T228] Tainted: [W]=WARN
[   23.914094][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.914530][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 23.914959][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   23.916159][  T228] RSP: 0018:ffffc90000b07520 EFLAGS: 00010246
[   23.916595][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   23.917095][  T228] RDX: 0000000000000000 RSI: ffff888008efac98 RDI: ffff888008cdae38
[   23.917651][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[   23.918150][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[   23.918833][  T228] R13: ffff888008efa128 R14: ffff888008efa008 R15: ffff888008efa000
[   23.919387][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   23.919964][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.920398][  T228] CR2: 00007f8627eef7d0 CR3: 0000000008e14002 CR4: 0000000000772ef0
[   23.920891][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   23.921430][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   23.921929][  T228] PKRU: 55555554
[   23.922460][  T228] Call Trace:
[   23.922700][  T228]  <TASK>
[ 23.922859][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 23.923089][ T228] ? __warn (kernel/panic.c:748) 
[ 23.923322][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 23.923649][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 23.924008][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 23.924292][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 23.924643][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 23.925005][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 23.925419][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 23.925847][ 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) 
[ 23.926212][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 23.926564][ T228] register_netdevice (net/core/dev.c:11033) 
[ 23.926921][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 23.927296][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 23.927688][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 23.928118][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 23.928400][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 23.928850][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 23.929322][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 23.929764][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 23.930121][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 23.930564][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 23.930909][ 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)) 
[ 23.931182][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 23.931536][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 23.931903][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 23.932190][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 23.932421][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 23.932673][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 23.933038][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 23.933429][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 23.933760][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 23.934108][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 23.934458][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 23.934804][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 23.935138][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 23.935489][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 23.935822][ 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) 
[ 23.936189][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 23.936538][ T228] device_add (drivers/base/core.c:3672) 
[ 23.936876][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 23.937245][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 23.937616][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 23.938048][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 23.938505][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 23.938840][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 23.939220][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 23.939557][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 23.939902][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 23.940210][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 23.940561][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 23.940890][ 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) 
[ 23.941271][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 23.941542][ T228] ksys_write (fs/read_write.c:731) 
[ 23.941733][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 23.941997][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 23.942362][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 23.942641][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.943064][  T228] RIP: 0033:0x7f86fa3e7b77
[ 23.943428][ 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
[   23.944597][  T228] RSP: 002b:00007ffeff208e38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   23.945112][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f86fa3e7b77
[   23.945647][  T228] RDX: 0000000000000004 RSI: 0000556eab588330 RDI: 0000000000000001
[   23.946164][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[   23.946672][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000004
[   23.947163][  T228] R13: 00007f86fa4a3760 R14: 0000000000000004 R15: 00007f86fa49e9c0
| [   23.997097][  T228] ------------[ cut here ]------------
| [ 23.997768][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [   23.998238][  T228] Modules linked in: netdevsim [last unloaded: netdevsim]
| [   23.999030][  T228] Tainted: [W]=WARN
[   23.999214][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.999496][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 23.999785][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   24.000585][  T228] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[   24.000876][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   24.001221][  T228] RDX: 0000000000000000 RSI: ffff88800a15ac98 RDI: ffff888008cdade8
[   24.001559][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[   24.001901][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[   24.002252][  T228] R13: ffff88800a15a128 R14: ffff88800a15a008 R15: ffff88800a15a000
[   24.002588][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   24.002981][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.003278][  T228] CR2: 0000563438cd6278 CR3: 0000000008e14005 CR4: 0000000000772ef0
[   24.003661][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   24.003998][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   24.004345][  T228] PKRU: 55555554
[   24.004519][  T228] Call Trace:
[   24.004691][  T228]  <TASK>
[ 24.004809][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 24.005201][ T228] ? __warn (kernel/panic.c:748) 
[ 24.005399][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 24.005629][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 24.005865][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 24.006039][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 24.006282][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 24.006526][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 24.006768][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 24.007064][ 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) 
[ 24.007307][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 24.007570][ T228] register_netdevice (net/core/dev.c:11033) 
[ 24.007804][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 24.008044][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 24.008297][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 24.008598][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 24.008903][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 24.009221][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 24.009450][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 24.009693][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 24.009983][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 24.010231][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 24.010460][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 24.010695][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 24.010943][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 24.011126][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 24.011372][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 24.011611][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 24.011862][ T228] ksys_write (fs/read_write.c:731) 
[ 24.012035][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 24.012283][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 24.012516][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.012806][  T228] RIP: 0033:0x7f86fa3e7b77
[ 24.013038][ 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
[   24.013830][  T228] RSP: 002b:00007ffeff208e38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   24.014178][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f86fa3e7b77
[   24.014515][  T228] RDX: 0000000000000002 RSI: 0000556eab588330 RDI: 0000000000000001
[   24.014855][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[   24.015198][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000002
[   24.015530][  T228] R13: 00007f86fa4a3760 R14: 0000000000000002 R15: 00007f86fa49e9c0
| [   30.323765][  T228] ------------[ cut here ]------------
| [ 30.324121][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [   30.325114][  T228] Modules linked in: netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   30.326018][  T228] Tainted: [W]=WARN
[   30.326199][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 30.326502][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 30.326783][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   30.327578][  T228] RSP: 0018:ffffc90000b07520 EFLAGS: 00010246
[   30.327858][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   30.328214][  T228] RDX: 0000000000000000 RSI: ffff88800dcb2c98 RDI: ffff888008cdae38
[   30.328577][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[   30.328927][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[   30.329290][  T228] R13: ffff88800dcb2128 R14: ffff88800dcb2008 R15: ffff88800dcb2000
[   30.329634][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   30.330026][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   30.330316][  T228] CR2: 00007fb12a9da000 CR3: 0000000008e14005 CR4: 0000000000772ef0
[   30.330649][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   30.330986][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   30.331341][  T228] PKRU: 55555554
[   30.331530][  T228] Call Trace:
[   30.331698][  T228]  <TASK>
[ 30.331817][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 30.332268][ T228] ? __warn (kernel/panic.c:748) 
[ 30.332470][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 30.332720][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 30.332963][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 30.333145][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 30.333395][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 30.333645][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 30.333875][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 30.334162][ 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) 
[ 30.334412][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 30.334650][ T228] register_netdevice (net/core/dev.c:11033) 
[ 30.334884][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 30.335124][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 30.335372][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 30.335651][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 30.335820][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 30.336116][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 30.336409][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 30.336713][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 30.336946][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 30.337219][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 30.337464][ 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)) 
[ 30.337637][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 30.337867][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 30.338101][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 30.338340][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 30.338550][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 30.338765][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 30.339039][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 30.339274][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 30.339481][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 30.339696][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 30.339912][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 30.340126][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 30.340455][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 30.340798][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 30.341144][ 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) 
[ 30.341509][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 30.341800][ T228] device_add (drivers/base/core.c:3672) 
[ 30.342133][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 30.342447][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 30.342801][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 30.343256][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 30.343673][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 30.343879][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 30.344104][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 30.344326][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 30.344540][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 30.344738][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 30.345088][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 30.345453][ 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) 
[ 30.345814][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 30.346162][ T228] ksys_write (fs/read_write.c:731) 
[ 30.346432][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 30.346761][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 30.347112][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 30.347459][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   30.347864][  T228] RIP: 0033:0x7f86fa3e7b77
[ 30.348215][ 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
[   30.349350][  T228] RSP: 002b:00007ffeff208e38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   30.349841][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f86fa3e7b77
[   30.350342][  T228] RDX: 0000000000000004 RSI: 0000556eab588330 RDI: 0000000000000001
[   30.350820][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[   30.351341][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000004
[   30.351835][  T228] R13: 00007f86fa4a3760 R14: 0000000000000004 R15: 00007f86fa49e9c0
| [   30.408883][  T228] ------------[ cut here ]------------
| [ 30.409257][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [   30.409651][  T228] Modules linked in: netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   30.410507][  T228] Tainted: [W]=WARN
[   30.410665][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 30.410913][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 30.411263][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   30.411920][  T228] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[   30.412260][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   30.412555][  T228] RDX: 0000000000000000 RSI: ffff88800de72c98 RDI: ffff888008cdade8
[   30.412844][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[   30.413120][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[   30.413502][  T228] R13: ffff88800de72128 R14: ffff88800de72008 R15: ffff88800de72000
[   30.413792][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   30.414122][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   30.414375][  T228] CR2: 00007f86fa302330 CR3: 0000000008e14005 CR4: 0000000000772ef0
[   30.414655][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   30.414948][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   30.415254][  T228] PKRU: 55555554
[   30.415401][  T228] Call Trace:
[   30.415547][  T228]  <TASK>
[ 30.415649][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 30.415850][ T228] ? __warn (kernel/panic.c:748) 
[ 30.416020][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 30.416227][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 30.416430][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 30.416574][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 30.416764][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 30.417102][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 30.417329][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 30.417585][ 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) 
[ 30.417792][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 30.417985][ T228] register_netdevice (net/core/dev.c:11033) 
[ 30.418196][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 30.418399][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 30.418619][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 30.418864][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 30.419249][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 30.419506][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 30.419714][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 30.419915][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 30.420155][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 30.420377][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 30.420612][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 30.420805][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 30.421009][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 30.421401][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 30.421620][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 30.421822][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 30.422029][ T228] ksys_write (fs/read_write.c:731) 
[ 30.422222][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 30.422440][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 30.422642][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   30.422889][  T228] RIP: 0033:0x7f86fa3e7b77
[ 30.423085][ 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
[   30.423763][  T228] RSP: 002b:00007ffeff206868 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   30.424067][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f86fa3e7b77
[   30.424364][  T228] RDX: 0000000000000002 RSI: 0000556eab588330 RDI: 0000000000000001
[   30.424646][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[   30.425240][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000002
[   30.425533][  T228] R13: 00007f86fa4a3760 R14: 0000000000000002 R15: 00007f86fa49e9c0
| [   44.195392][  T228] ------------[ cut here ]------------
| [ 44.195746][ T228] WARNING: CPU: 1 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [   44.196270][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   44.197365][  T228] Tainted: [W]=WARN
[   44.197549][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 44.197854][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 44.198182][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   44.199010][  T228] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[   44.199382][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   44.199731][  T228] RDX: 0000000000000000 RSI: ffff88800a26ac98 RDI: ffff888008cdade8
[   44.200083][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[   44.200565][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[   44.200913][  T228] R13: ffff88800a26a128 R14: ffff88800a26a008 R15: ffff88800a26a000
[   44.201485][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   44.201890][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   44.202306][  T228] CR2: 00007f86fa32b440 CR3: 0000000008e14002 CR4: 0000000000772ef0
[   44.202714][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   44.203048][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   44.203423][  T228] PKRU: 55555554
[   44.203599][  T228] Call Trace:
[   44.203784][  T228]  <TASK>
[ 44.203927][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 44.204214][ T228] ? __warn (kernel/panic.c:748) 
[ 44.204390][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 44.204612][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 44.204848][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 44.205038][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 44.205308][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 44.205558][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 44.205811][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 44.206122][ 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) 
[ 44.206410][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 44.206680][ T228] register_netdevice (net/core/dev.c:11033) 
[ 44.206967][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 44.207265][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 44.207628][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 44.207906][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 44.208228][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 44.208520][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 44.208737][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 44.208975][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 44.209264][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 44.209483][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 44.209716][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 44.209938][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 44.210184][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 44.210362][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 44.210601][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 44.210825][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 44.211044][ T228] ksys_write (fs/read_write.c:731) 
[ 44.211218][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 44.211457][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 44.211676][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   44.211944][  T228] RIP: 0033:0x7f86fa3e7b77
[ 44.212188][ 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
[   44.212922][  T228] RSP: 002b:00007ffeff206868 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   44.213252][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f86fa3e7b77
[   44.213570][  T228] RDX: 0000000000000002 RSI: 0000556eab588330 RDI: 0000000000000001
[   44.213894][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[   44.214228][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000002
[   44.214551][  T228] R13: 00007f86fa4a3760 R14: 0000000000000002 R15: 00007f86fa49e9c0
| [   57.845573][  T228] ------------[ cut here ]------------
| [ 57.845981][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [   57.846438][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   57.847700][  T228] Tainted: [W]=WARN
[   57.847872][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 57.848232][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 57.848563][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   57.849401][  T228] RSP: 0018:ffffc90000b07520 EFLAGS: 00010246
[   57.849707][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   57.850024][  T228] RDX: 0000000000000000 RSI: ffff88800a15ac98 RDI: ffff888008cdae38
[   57.850443][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[   57.850851][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[   57.851184][  T228] R13: ffff88800a15a128 R14: ffff88800a15a008 R15: ffff88800a15a000
[   57.851513][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   57.851890][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   57.852215][  T228] CR2: 00007f133ab0f000 CR3: 0000000008e14004 CR4: 0000000000772ef0
[   57.852606][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   57.853023][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   57.853561][  T228] PKRU: 55555554
[   57.853851][  T228] Call Trace:
[   57.854080][  T228]  <TASK>
[ 57.854208][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 57.854494][ T228] ? __warn (kernel/panic.c:748) 
[ 57.854692][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 57.854910][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 57.855144][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 57.855328][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 57.855560][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 57.855795][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 57.856028][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 57.856310][ 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) 
[ 57.856589][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 57.856846][ T228] register_netdevice (net/core/dev.c:11033) 
[ 57.857065][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 57.857320][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 57.857556][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 57.857827][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 57.857995][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 57.858291][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 57.858566][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 57.858909][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 57.859131][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 57.859413][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 57.859629][ 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)) 
[ 57.859788][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 57.860005][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 57.860234][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 57.860453][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 57.860682][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 57.860897][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 57.861153][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 57.861379][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 57.861630][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 57.861870][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 57.862104][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 57.862337][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 57.862570][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 57.862806][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 57.863021][ 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) 
[ 57.863261][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 57.863479][ T228] device_add (drivers/base/core.c:3672) 
[ 57.863706][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 57.863950][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 57.864183][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 57.864459][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 57.864748][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 57.864962][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 57.865192][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 57.865413][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 57.865629][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 57.865799][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 57.866014][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 57.866244][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 57.866469][ T228] ksys_write (fs/read_write.c:731) 
[ 57.866640][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 57.866871][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 57.867100][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   57.867393][  T228] RIP: 0033:0x7f86fa3e7b77
[ 57.867616][ 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
[   57.868361][  T228] RSP: 002b:00007ffeff208e38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   57.868688][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f86fa3e7b77
[   57.869002][  T228] RDX: 0000000000000004 RSI: 0000556eab588330 RDI: 0000000000000001
[   57.869324][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[   57.869635][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000004
[   57.869953][  T228] R13: 00007f86fa4a3760 R14: 0000000000000004 R15: 00007f86fa49e9c0
| [   57.912712][  T228] ------------[ cut here ]------------
| [ 57.913100][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [   57.913678][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   57.914499][  T228] Tainted: [W]=WARN
[   57.914649][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 57.914897][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 57.915153][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   57.915844][  T228] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[   57.916087][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   57.916491][  T228] RDX: 0000000000000000 RSI: ffff88800a2a2c98 RDI: ffff888008cdade8
[   57.916823][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[   57.917109][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[   57.917433][  T228] R13: ffff88800a2a2128 R14: ffff88800a2a2008 R15: ffff88800a2a2000
[   57.917731][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   57.918065][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   57.918313][  T228] CR2: 00007f86fa302330 CR3: 0000000008e14004 CR4: 0000000000772ef0
[   57.918682][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   57.919343][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   57.919702][  T228] PKRU: 55555554
[   57.919873][  T228] Call Trace:
[   57.920018][  T228]  <TASK>
[ 57.920120][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 57.920338][ T228] ? __warn (kernel/panic.c:748) 
[ 57.920531][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 57.920779][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 57.920983][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 57.921201][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 57.921439][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 57.921764][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 57.921976][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 57.922291][ 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) 
[ 57.922516][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 57.922716][ T228] register_netdevice (net/core/dev.c:11033) 
[ 57.922945][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 57.923191][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 57.923414][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 57.923751][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 57.924072][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 57.924434][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 57.924736][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 57.925068][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 57.925495][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 57.925814][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 57.926147][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 57.926500][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 57.926752][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 57.926915][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 57.927119][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 57.927362][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 57.927582][ T228] ksys_write (fs/read_write.c:731) 
[ 57.927734][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 57.927975][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 57.928235][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   57.928530][  T228] RIP: 0033:0x7f86fa3e7b77
[ 57.928771][ 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
[   57.929895][  T228] RSP: 002b:00007ffeff206868 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   57.930387][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f86fa3e7b77
[   57.930821][  T228] RDX: 0000000000000002 RSI: 0000556eab588330 RDI: 0000000000000001
[   57.931231][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[   57.931557][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000002
[   57.931921][  T228] R13: 00007f86fa4a3760 R14: 0000000000000002 R15: 00007f86fa49e9c0
| [   72.471158][  T228] ------------[ cut here ]------------
| [ 72.471463][ T228] WARNING: CPU: 1 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [   72.471988][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   72.472912][  T228] Tainted: [W]=WARN
[   72.473060][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 72.473388][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 72.473686][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   72.474430][  T228] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[   72.474803][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   72.475154][  T228] RDX: 0000000000000000 RSI: ffff888008efac98 RDI: ffff888008cdade8
[   72.475451][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[   72.475811][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[   72.476138][  T228] R13: ffff888008efa128 R14: ffff888008efa008 R15: ffff888008efa000
[   72.476468][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   72.476819][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   72.477112][  T228] CR2: 00007f86fa32b440 CR3: 0000000008e14005 CR4: 0000000000772ef0
[   72.477447][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   72.477801][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   72.478081][  T228] PKRU: 55555554
[   72.478245][  T228] Call Trace:
[   72.478399][  T228]  <TASK>
[ 72.478498][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 72.478720][ T228] ? __warn (kernel/panic.c:748) 
[ 72.478869][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 72.479063][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 72.479285][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 72.479435][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 72.479631][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 72.479970][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 72.480332][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 72.480750][ 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) 
[ 72.481090][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 72.481449][ T228] register_netdevice (net/core/dev.c:11033) 
[ 72.481776][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 72.482156][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 72.482418][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 72.482692][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 72.483011][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 72.483322][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 72.483570][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 72.483830][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 72.484140][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 72.484369][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 72.484566][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 72.484807][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 72.485013][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 72.485227][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 72.485440][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 72.485674][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 72.485891][ T228] ksys_write (fs/read_write.c:731) 
[ 72.486067][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 72.486288][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 72.486490][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   72.486742][  T228] RIP: 0033:0x7f86fa3e7b77
[ 72.486945][ 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
[   72.487697][  T228] RSP: 002b:00007ffeff206868 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   72.488174][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f86fa3e7b77
[   72.488477][  T228] RDX: 0000000000000002 RSI: 0000556eab588330 RDI: 0000000000000001
[   72.488793][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[   72.489104][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000002
[   72.489414][  T228] R13: 00007f86fa4a3760 R14: 0000000000000002 R15: 00007f86fa49e9c0
| [   86.165146][  T228] ------------[ cut here ]------------
| [ 86.165576][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [   86.166034][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   86.166988][  T228] Tainted: [W]=WARN
[   86.167196][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 86.167488][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 86.167756][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   86.168859][  T228] RSP: 0018:ffffc90000b07520 EFLAGS: 00010246
[   86.169315][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   86.169861][  T228] RDX: 0000000000000000 RSI: ffff88800a79ac98 RDI: ffff888008cdae38
[   86.170271][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[   86.170588][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[   86.170897][  T228] R13: ffff88800a79a128 R14: ffff88800a79a008 R15: ffff88800a79a000
[   86.171231][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   86.171590][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   86.171854][  T228] CR2: 00007fc572ebc000 CR3: 0000000008e14006 CR4: 0000000000772ef0
[   86.172365][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   86.172678][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   86.172989][  T228] PKRU: 55555554
[   86.173250][  T228] Call Trace:
[   86.173505][  T228]  <TASK>
[ 86.173682][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 86.173993][ T228] ? __warn (kernel/panic.c:748) 
[ 86.174186][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 86.174400][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 86.174639][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 86.174798][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 86.175012][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 86.175259][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 86.175484][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 86.175748][ 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) 
[ 86.175963][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 86.176199][ T228] register_netdevice (net/core/dev.c:11033) 
[ 86.176417][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 86.176639][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 86.176869][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 86.177176][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 86.177342][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 86.177625][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 86.177897][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 86.178283][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 86.178546][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 86.178807][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 86.179038][ 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)) 
[ 86.179213][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 86.179433][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 86.179647][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 86.179864][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 86.180088][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 86.180309][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 86.180568][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 86.180779][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 86.180990][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 86.181229][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 86.181439][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 86.181650][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 86.181857][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 86.182079][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 86.182299][ 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) 
[ 86.182516][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 86.182728][ T228] device_add (drivers/base/core.c:3672) 
[ 86.182940][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 86.183302][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 86.183531][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 86.183799][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 86.184081][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 86.184298][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 86.184510][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 86.184712][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 86.184934][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 86.185112][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 86.185361][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 86.185577][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 86.185791][ T228] ksys_write (fs/read_write.c:731) 
[ 86.185949][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 86.186190][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 86.186400][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   86.186681][  T228] RIP: 0033:0x7f86fa3e7b77
[ 86.186912][ 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
[   86.187691][  T228] RSP: 002b:00007ffeff208e38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   86.188021][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f86fa3e7b77
[   86.188415][  T228] RDX: 0000000000000004 RSI: 0000556eab588330 RDI: 0000000000000001
[   86.188718][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[   86.189023][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000004
[   86.189357][  T228] R13: 00007f86fa4a3760 R14: 0000000000000004 R15: 00007f86fa49e9c0
| [   86.237237][  T228] ------------[ cut here ]------------
| [ 86.237572][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [   86.237943][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   86.239728][  T228] Tainted: [W]=WARN
[   86.239871][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 86.240121][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 86.240374][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   86.241055][  T228] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[   86.241317][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   86.241614][  T228] RDX: 0000000000000000 RSI: ffff88800a3a2c98 RDI: ffff888008cdade8
[   86.241887][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[   86.242192][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[   86.242467][  T228] R13: ffff88800a3a2128 R14: ffff88800a3a2008 R15: ffff88800a3a2000
[   86.242777][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   86.243139][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   86.243559][  T228] CR2: 00007f86fa302330 CR3: 0000000008e14006 CR4: 0000000000772ef0
[   86.243848][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   86.244153][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   86.244454][  T228] PKRU: 55555554
[   86.244595][  T228] Call Trace:
[   86.244735][  T228]  <TASK>
[ 86.244831][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 86.245017][ T228] ? __warn (kernel/panic.c:748) 
[ 86.245339][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 86.245527][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 86.245730][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 86.245872][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 86.246084][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 86.246426][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 86.246759][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 86.247152][ 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) 
[ 86.247493][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 86.247798][ T228] register_netdevice (net/core/dev.c:11033) 
[ 86.248114][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 86.248460][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 86.248803][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 86.249225][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 86.249667][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 86.250079][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 86.250410][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 86.250748][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 86.251149][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 86.251489][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 86.251804][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 86.252117][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 86.252455][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 86.252709][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 86.253037][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 86.253378][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 86.253697][ T228] ksys_write (fs/read_write.c:731) 
[ 86.253943][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 86.254293][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 86.254546][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   86.254894][  T228] RIP: 0033:0x7f86fa3e7b77
[ 86.255122][ 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
[   86.255821][  T228] RSP: 002b:00007ffeff208158 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   86.256113][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f86fa3e7b77
[   86.256405][  T228] RDX: 0000000000000002 RSI: 0000556eab588330 RDI: 0000000000000001
[   86.256678][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[   86.256948][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000002
[   86.257267][  T228] R13: 00007f86fa4a3760 R14: 0000000000000002 R15: 00007f86fa49e9c0
| [   94.040839][  T228] ------------[ cut here ]------------
| [ 94.041115][ T228] WARNING: CPU: 1 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [   94.041554][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   94.042619][  T228] Tainted: [W]=WARN
[   94.042829][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 94.043144][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 94.043588][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   94.044536][  T228] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[   94.044831][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   94.045282][  T228] RDX: 0000000000000000 RSI: ffff88800dcb2c98 RDI: ffff888008cdade8
[   94.045626][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[   94.045957][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[   94.046263][  T228] R13: ffff88800dcb2128 R14: ffff88800dcb2008 R15: ffff88800dcb2000
[   94.046606][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   94.046996][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   94.047350][  T228] CR2: 00007f86fa32b440 CR3: 0000000008e14004 CR4: 0000000000772ef0
[   94.047638][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   94.047915][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   94.048226][  T228] PKRU: 55555554
[   94.048378][  T228] Call Trace:
[   94.048520][  T228]  <TASK>
[ 94.048619][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 94.048813][ T228] ? __warn (kernel/panic.c:748) 
[ 94.048958][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 94.049230][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 94.049449][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 94.049596][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 94.049814][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 94.050071][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 94.050304][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 94.050548][ 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) 
[ 94.050742][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 94.050970][ T228] register_netdevice (net/core/dev.c:11033) 
[ 94.051255][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 94.051488][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 94.051705][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 94.052017][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 94.052402][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 94.052721][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 94.052917][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 94.053150][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 94.053414][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 94.053605][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 94.053794][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 94.053989][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 94.054222][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 94.054385][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 94.054592][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 94.054795][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 94.054994][ T228] ksys_write (fs/read_write.c:731) 
[ 94.055163][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 94.055377][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 94.055570][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   94.055808][  T228] RIP: 0033:0x7f86fa3e7b77
[ 94.056005][ 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
[   94.056716][  T228] RSP: 002b:00007ffeff208158 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   94.057024][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f86fa3e7b77
[   94.057508][  T228] RDX: 0000000000000002 RSI: 0000556eab588330 RDI: 0000000000000001
[   94.057801][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[   94.058095][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000002
[   94.058389][  T228] R13: 00007f86fa4a3760 R14: 0000000000000002 R15: 00007f86fa49e9c0
| [  102.484912][  T228] ------------[ cut here ]------------
| [ 102.485289][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [  102.485735][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  102.486634][  T228] Tainted: [W]=WARN
[  102.486808][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 102.487103][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 102.487395][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  102.488244][  T228] RSP: 0018:ffffc90000b07520 EFLAGS: 00010246
[  102.488524][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  102.488851][  T228] RDX: 0000000000000000 RSI: ffff88800de72c98 RDI: ffff888008cdae38
[  102.489192][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[  102.489522][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[  102.489843][  T228] R13: ffff88800de72128 R14: ffff88800de72008 R15: ffff88800de72000
[  102.490179][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  102.490558][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  102.490853][  T228] CR2: 00007f86fa32b440 CR3: 0000000008e14004 CR4: 0000000000772ef0
[  102.491196][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  102.491681][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  102.492032][  T228] PKRU: 55555554
[  102.492207][  T228] Call Trace:
[  102.492375][  T228]  <TASK>
[ 102.492498][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 102.492727][ T228] ? __warn (kernel/panic.c:748) 
[ 102.492896][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 102.493129][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 102.493370][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 102.493547][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 102.493777][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 102.494009][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 102.494272][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 102.494557][ 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) 
[ 102.494796][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 102.495018][ T228] register_netdevice (net/core/dev.c:11033) 
[ 102.495263][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 102.495497][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 102.495732][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 102.496035][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 102.496232][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 102.496519][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 102.496804][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 102.497114][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 102.497354][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 102.497642][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 102.497899][ 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)) 
[ 102.498067][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 102.498300][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 102.498522][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 102.498737][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 102.498966][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 102.499205][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 102.499490][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 102.499723][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 102.499965][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 102.500199][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 102.500413][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 102.500630][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 102.500851][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 102.501092][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 102.501338][ 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) 
[ 102.501566][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 102.501823][ T228] device_add (drivers/base/core.c:3672) 
[ 102.502045][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 102.502297][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 102.502529][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 102.502824][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 102.503136][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 102.503369][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 102.503594][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 102.503837][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 102.504065][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 102.504260][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 102.504490][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 102.504719][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 102.504951][ T228] ksys_write (fs/read_write.c:731) 
[ 102.505132][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 102.505376][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 102.505602][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  102.505880][  T228] RIP: 0033:0x7f86fa3e7b77
[ 102.506107][ 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
[  102.506877][  T228] RSP: 002b:00007ffeff208e38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  102.507236][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f86fa3e7b77
[  102.507568][  T228] RDX: 0000000000000004 RSI: 0000556eab588330 RDI: 0000000000000001
[  102.507884][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[  102.508244][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000004
[  102.508563][  T228] R13: 00007f86fa4a3760 R14: 0000000000000004 R15: 00007f86fa49e9c0
| [  102.564533][  T228] ------------[ cut here ]------------
| [ 102.564848][ T228] WARNING: CPU: 3 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [  102.565248][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  102.566146][  T228] Tainted: [W]=WARN
[  102.566325][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 102.566562][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 102.566810][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  102.567580][  T228] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[  102.567824][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  102.568110][  T228] RDX: 0000000000000000 RSI: ffff88800a26ac98 RDI: ffff888008cdade8
[  102.568405][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[  102.568697][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[  102.568978][  T228] R13: ffff88800a26a128 R14: ffff88800a26a008 R15: ffff88800a26a000
[  102.569268][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  102.569597][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  102.569857][  T228] CR2: 00007ffeff205f50 CR3: 0000000008e14002 CR4: 0000000000772ef0
[  102.570192][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  102.570700][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  102.570992][  T228] PKRU: 55555554
[  102.571138][  T228] Call Trace:
[  102.571297][  T228]  <TASK>
[ 102.571411][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 102.571633][ T228] ? __warn (kernel/panic.c:748) 
[ 102.571797][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 102.572016][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 102.572257][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 102.572416][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 102.572608][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 102.572828][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 102.573048][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 102.573305][ 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) 
[ 102.573505][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 102.573705][ T228] register_netdevice (net/core/dev.c:11033) 
[ 102.573918][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 102.574133][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 102.574369][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 102.574700][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 102.575210][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 102.575560][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 102.575828][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 102.576100][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 102.576395][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 102.576616][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 102.576824][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 102.577205][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 102.577477][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 102.577652][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 102.577882][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 102.578369][ 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) 
[ 102.578596][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 102.578811][ T228] ksys_write (fs/read_write.c:731) 
[ 102.578965][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 102.579236][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 102.579505][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 102.579769][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  102.580111][  T228] RIP: 0033:0x7f86fa3e7b77
[ 102.580456][ 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
[  102.581611][  T228] RSP: 002b:00007ffeff2064d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  102.582075][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f86fa3e7b77
[  102.582775][  T228] RDX: 0000000000000002 RSI: 0000556eab588330 RDI: 0000000000000001
[  102.583286][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[  102.583968][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000002
[  102.584486][  T228] R13: 00007f86fa4a3760 R14: 0000000000000002 R15: 00007f86fa49e9c0
| [  105.557921][  T228] ------------[ cut here ]------------
| [ 105.559125][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [  105.559574][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  105.560446][  T228] Tainted: [W]=WARN
[  105.560618][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 105.560879][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 105.561144][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  105.561853][  T228] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[  105.562110][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  105.562420][  T228] RDX: 0000000000000000 RSI: ffff88800a15ac98 RDI: ffff888008cdade8
[  105.562715][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[  105.563012][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[  105.563324][  T228] R13: ffff88800a15a128 R14: ffff88800a15a008 R15: ffff88800a15a000
[  105.563652][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  105.564023][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  105.564311][  T228] CR2: 00007ffeff209054 CR3: 0000000008e14004 CR4: 0000000000772ef0
[  105.564632][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  105.564930][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  105.565244][  T228] PKRU: 55555554
[  105.565397][  T228] Call Trace:
[  105.565548][  T228]  <TASK>
[ 105.565656][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 105.565861][ T228] ? __warn (kernel/panic.c:748) 
[ 105.566017][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 105.566232][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 105.566480][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 105.566639][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 105.566847][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 105.567074][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 105.567303][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 105.567581][ 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) 
[ 105.567827][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 105.568058][ T228] register_netdevice (net/core/dev.c:11033) 
[ 105.568288][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 105.568507][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 105.568724][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 105.568987][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 105.569280][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 105.569544][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 105.569750][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 105.569960][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 105.570235][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 105.570436][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 105.570637][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 105.570848][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 105.571104][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 105.571293][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 105.571521][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 105.571747][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 105.571973][ T228] ksys_write (fs/read_write.c:731) 
[ 105.572156][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 105.572394][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 105.572617][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  105.572885][  T228] RIP: 0033:0x7f86fa3e7b77
[ 105.573111][ 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
[  105.573880][  T228] RSP: 002b:00007ffeff2064d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  105.574218][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f86fa3e7b77
[  105.574544][  T228] RDX: 0000000000000002 RSI: 0000556eab588330 RDI: 0000000000000001
[  105.574864][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[  105.575208][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000002
[  105.575537][  T228] R13: 00007f86fa4a3760 R14: 0000000000000002 R15: 00007f86fa49e9c0
| [  108.452370][  T228] ------------[ cut here ]------------
| [ 108.452749][ T228] WARNING: CPU: 1 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [  108.453183][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  108.454039][  T228] Tainted: [W]=WARN
[  108.454251][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 108.454534][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 108.454810][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  108.455565][  T228] RSP: 0018:ffffc90000b07520 EFLAGS: 00010246
[  108.455837][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  108.456159][  T228] RDX: 0000000000000000 RSI: ffff88800a2a2c98 RDI: ffff888008cdae38
[  108.456492][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[  108.456821][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[  108.457152][  T228] R13: ffff88800a2a2128 R14: ffff88800a2a2008 R15: ffff88800a2a2000
[  108.457536][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  108.458189][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  108.458653][  T228] CR2: 0000561dadd79df8 CR3: 0000000008e14001 CR4: 0000000000772ef0
[  108.459535][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  108.460079][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  108.460630][  T228] PKRU: 55555554
[  108.460920][  T228] Call Trace:
[  108.461213][  T228]  <TASK>
[ 108.461404][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 108.461776][ T228] ? __warn (kernel/panic.c:748) 
[ 108.462093][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 108.462472][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 108.462844][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 108.463120][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 108.463522][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 108.463921][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 108.464334][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 108.464797][ 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) 
[ 108.465203][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 108.465594][ T228] register_netdevice (net/core/dev.c:11033) 
[ 108.465971][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 108.466263][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 108.466576][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 108.466862][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 108.467057][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 108.467436][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 108.467818][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 108.468208][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 108.468478][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 108.468816][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 108.469044][ 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)) 
[ 108.469234][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 108.469491][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 108.469723][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 108.469948][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 108.470183][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 108.470400][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 108.470700][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 108.470922][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 108.471140][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 108.471457][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 108.471694][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 108.471920][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 108.472139][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 108.472366][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 108.472682][ 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) 
[ 108.472924][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 108.473158][ T228] device_add (drivers/base/core.c:3672) 
[ 108.473389][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 108.473618][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 108.473850][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 108.474131][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 108.474449][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 108.474671][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 108.474908][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 108.475148][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 108.475396][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 108.475607][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 108.475826][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 108.476046][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 108.476280][ T228] ksys_write (fs/read_write.c:731) 
[ 108.476502][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 108.476742][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 108.476958][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  108.477261][  T228] RIP: 0033:0x7f86fa3e7b77
[ 108.477498][ 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
[  108.478258][  T228] RSP: 002b:00007ffeff208e38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  108.478605][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f86fa3e7b77
[  108.478922][  T228] RDX: 0000000000000004 RSI: 0000556eab588330 RDI: 0000000000000001
[  108.479330][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[  108.479689][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000004
[  108.480002][  T228] R13: 00007f86fa4a3760 R14: 0000000000000004 R15: 00007f86fa49e9c0
| [  108.536737][  T228] ------------[ cut here ]------------
| [ 108.537087][ T228] WARNING: CPU: 3 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [  108.537643][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  108.538535][  T228] Tainted: [W]=WARN
[  108.538692][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 108.538941][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 108.539230][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  108.539973][  T228] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[  108.540250][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  108.540562][  T228] RDX: 0000000000000000 RSI: ffff888008efac98 RDI: ffff888008cdade8
[  108.540856][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[  108.541240][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[  108.541558][  T228] R13: ffff888008efa128 R14: ffff888008efa008 R15: ffff888008efa000
[  108.541866][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  108.542359][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  108.542625][  T228] CR2: 0000556eab55f000 CR3: 0000000008e14002 CR4: 0000000000772ef0
[  108.542946][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  108.543307][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  108.543651][  T228] PKRU: 55555554
[  108.543819][  T228] Call Trace:
[  108.543989][  T228]  <TASK>
[ 108.544112][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 108.544342][ T228] ? __warn (kernel/panic.c:748) 
[ 108.544518][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 108.544735][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 108.544960][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 108.545128][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 108.545347][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 108.545581][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 108.545797][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 108.546067][ 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) 
[ 108.546305][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 108.546526][ T228] register_netdevice (net/core/dev.c:11033) 
[ 108.546755][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 108.546992][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 108.547240][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 108.547532][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 108.547838][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 108.548122][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 108.548359][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 108.548588][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 108.548860][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 108.549071][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 108.549302][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 108.549521][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 108.549733][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 108.549916][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 108.550137][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 108.550381][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 108.550617][ T228] ksys_write (fs/read_write.c:731) 
[ 108.550787][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 108.551006][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 108.551222][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  108.551489][  T228] RIP: 0033:0x7f86fa3e7b77
[ 108.551709][ 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
[  108.552452][  T228] RSP: 002b:00007ffeff206998 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  108.552769][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f86fa3e7b77
[  108.553101][  T228] RDX: 0000000000000002 RSI: 0000556eab588330 RDI: 0000000000000001
[  108.553419][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[  108.553730][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000002
[  108.554037][  T228] R13: 00007f86fa4a3760 R14: 0000000000000002 R15: 00007f86fa49e9c0
| [  111.357747][  T228] ------------[ cut here ]------------
| [ 111.357990][ T228] WARNING: CPU: 3 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [  111.358413][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  111.359232][  T228] Tainted: [W]=WARN
[  111.359377][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 111.359615][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 111.359884][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  111.360743][  T228] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[  111.360988][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  111.361391][  T228] RDX: 0000000000000000 RSI: ffff88800a79ac98 RDI: ffff888008cdade8
[  111.361671][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[  111.361957][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[  111.362403][  T228] R13: ffff88800a79a128 R14: ffff88800a79a008 R15: ffff88800a79a000
[  111.362684][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  111.363012][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  111.363409][  T228] CR2: 0000561dadd5ff20 CR3: 0000000008e14003 CR4: 0000000000772ef0
[  111.363705][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  111.363984][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  111.364413][  T228] PKRU: 55555554
[  111.364564][  T228] Call Trace:
[  111.364707][  T228]  <TASK>
[ 111.364805][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 111.364998][ T228] ? __warn (kernel/panic.c:748) 
[ 111.365310][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 111.365506][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 111.365704][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 111.365862][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 111.366059][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 111.366421][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 111.366625][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 111.366873][ 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) 
[ 111.367096][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 111.367422][ T228] register_netdevice (net/core/dev.c:11033) 
[ 111.367633][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 111.367839][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 111.368055][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 111.368498][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 111.368792][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 111.369052][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 111.369277][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 111.369479][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 111.369723][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 111.369923][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 111.370140][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 111.370350][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 111.370579][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 111.370752][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 111.370944][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 111.371158][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 111.371384][ T228] ksys_write (fs/read_write.c:731) 
[ 111.371528][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 111.371768][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 111.371983][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  111.372262][  T228] RIP: 0033:0x7f86fa3e7b77
[ 111.372489][ 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
[  111.373215][  T228] RSP: 002b:00007ffeff206998 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  111.373535][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f86fa3e7b77
[  111.373845][  T228] RDX: 0000000000000002 RSI: 0000556eab588330 RDI: 0000000000000001
[  111.374176][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[  111.374497][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000002
[  111.374803][  T228] R13: 00007f86fa4a3760 R14: 0000000000000002 R15: 00007f86fa49e9c0
| [  113.884905][  T228] ------------[ cut here ]------------
| [ 113.885543][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [  113.886344][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  113.888223][  T228] Tainted: [W]=WARN
[  113.888537][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 113.889030][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 113.889553][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  113.890937][  T228] RSP: 0018:ffffc90000b07520 EFLAGS: 00010246
[  113.891469][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  113.892044][  T228] RDX: 0000000000000000 RSI: ffff88800a3a2c98 RDI: ffff888008cdae38
[  113.892650][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[  113.893251][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[  113.893818][  T228] R13: ffff88800a3a2128 R14: ffff88800a3a2008 R15: ffff88800a3a2000
[  113.894473][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  113.895095][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  113.895576][  T228] CR2: 0000556e7c77c990 CR3: 0000000008e14006 CR4: 0000000000772ef0
[  113.896105][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  113.896650][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  113.897214][  T228] PKRU: 55555554
[  113.897508][  T228] Call Trace:
[  113.897837][  T228]  <TASK>
[ 113.898045][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 113.898447][ T228] ? __warn (kernel/panic.c:748) 
[ 113.898749][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 113.899125][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 113.899535][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 113.899832][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 113.900223][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 113.900611][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 113.901003][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 113.901493][ 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) 
[ 113.901881][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 113.902517][ T228] register_netdevice (net/core/dev.c:11033) 
[ 113.902914][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 113.903343][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 113.903752][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 113.904227][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 113.904509][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 113.905008][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 113.905519][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 113.906006][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 113.906427][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 113.906910][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 113.907329][ 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)) 
[ 113.907623][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 113.907950][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 113.908200][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 113.908515][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 113.908744][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 113.908971][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 113.909257][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 113.909575][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 113.909912][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 113.910137][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 113.910401][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 113.910628][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 113.910851][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 113.911068][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 113.911302][ 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) 
[ 113.911542][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 113.911768][ T228] device_add (drivers/base/core.c:3672) 
[ 113.911998][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 113.912289][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 113.912560][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 113.912843][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 113.913129][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 113.913378][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 113.913610][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 113.913836][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 113.914063][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 113.914254][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 113.914495][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 113.914726][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 113.914954][ T228] ksys_write (fs/read_write.c:731) 
[ 113.915131][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 113.915427][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 113.915663][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  113.915935][  T228] RIP: 0033:0x7f86fa3e7b77
[ 113.916163][ 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
[  113.917312][  T228] RSP: 002b:00007ffeff208e38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  113.917843][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f86fa3e7b77
[  113.918388][  T228] RDX: 0000000000000004 RSI: 0000556eab588330 RDI: 0000000000000001
[  113.918916][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[  113.919464][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000004
[  113.919927][  T228] R13: 00007f86fa4a3760 R14: 0000000000000004 R15: 00007f86fa49e9c0
| [  113.981998][  T228] ------------[ cut here ]------------
| [ 113.982596][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [  113.983052][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  113.984226][  T228] Tainted: [W]=WARN
[  113.984421][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 113.984741][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 113.985072][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  113.985837][  T228] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[  113.986131][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  113.986488][  T228] RDX: 0000000000000000 RSI: ffff88800dcb2c98 RDI: ffff888008cdade8
[  113.986818][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[  113.987181][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[  113.987516][  T228] R13: ffff88800dcb2128 R14: ffff88800dcb2008 R15: ffff88800dcb2000
[  113.987859][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  113.988254][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  113.988552][  T228] CR2: 00007ffeff205f50 CR3: 0000000008e14006 CR4: 0000000000772ef0
[  113.988894][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  113.989265][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  113.989605][  T228] PKRU: 55555554
[  113.989796][  T228] Call Trace:
[  113.989988][  T228]  <TASK>
[ 113.990141][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 113.990403][ T228] ? __warn (kernel/panic.c:748) 
[ 113.990596][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 113.990872][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 113.991130][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 113.991331][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 113.991580][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 113.991840][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 113.992091][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 113.992401][ 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) 
[ 113.992638][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 113.992876][ T228] register_netdevice (net/core/dev.c:11033) 
[ 113.993132][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 113.993393][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 113.993647][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 113.993958][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 113.994305][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 113.994611][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 113.994873][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 113.995118][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 113.995452][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 113.995699][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 113.995926][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 113.996176][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 113.996417][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 113.996641][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 113.996886][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 113.997157][ 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) 
[ 113.997400][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 113.997651][ T228] ksys_write (fs/read_write.c:731) 
[ 113.997829][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 113.998069][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 113.998318][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 113.998567][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  113.998852][  T228] RIP: 0033:0x7f86fa3e7b77
[ 113.999088][ T228] Code: Unable to access opcode bytes at 0x7f86fa3e7b4d.

Code starting with the faulting instruction
===========================================
[  113.999427][  T228] RSP: 002b:00007ffeff2064d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  113.999811][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f86fa3e7b77
[  114.000209][  T228] RDX: 0000000000000002 RSI: 0000556eab588330 RDI: 0000000000000001
[  114.000575][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[  114.000957][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000002
[  114.001370][  T228] R13: 00007f86fa4a3760 R14: 0000000000000002 R15: 00007f86fa49e9c0
| [  116.542802][  T228] ------------[ cut here ]------------
| [ 116.543147][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [  116.543850][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  116.544888][  T228] Tainted: [W]=WARN
[  116.545084][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 116.545421][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 116.545722][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  116.546660][  T228] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[  116.547032][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  116.547425][  T228] RDX: 0000000000000000 RSI: ffff88800de72c98 RDI: ffff888008cdade8
[  116.547793][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[  116.548198][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[  116.548591][  T228] R13: ffff88800de72128 R14: ffff88800de72008 R15: ffff88800de72000
[  116.548972][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  116.549430][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  116.549767][  T228] CR2: 00007f249b247000 CR3: 0000000008e14004 CR4: 0000000000772ef0
[  116.550232][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  116.550645][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  116.551072][  T228] PKRU: 55555554
[  116.551306][  T228] Call Trace:
[  116.551522][  T228]  <TASK>
[ 116.551678][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 116.551977][ T228] ? __warn (kernel/panic.c:748) 
[ 116.552220][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 116.552478][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 116.552759][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 116.552981][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 116.553282][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 116.553574][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 116.553871][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 116.554216][ 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) 
[ 116.554483][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 116.554772][ T228] register_netdevice (net/core/dev.c:11033) 
[ 116.555037][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 116.555322][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 116.555600][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 116.555925][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 116.556289][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 116.556613][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 116.556873][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 116.557155][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 116.557503][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 116.557786][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 116.558053][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 116.558303][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 116.558558][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 116.558742][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 116.558994][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 116.559260][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 116.559513][ T228] ksys_write (fs/read_write.c:731) 
[ 116.559696][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 116.559970][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 116.560235][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  116.560549][  T228] RIP: 0033:0x7f86fa3e7b77
[ 116.560821][ 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
[  116.561790][  T228] RSP: 002b:00007ffeff2064d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  116.562214][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f86fa3e7b77
[  116.562627][  T228] RDX: 0000000000000002 RSI: 0000556eab588330 RDI: 0000000000000001
[  116.563024][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[  116.563408][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000002
[  116.563805][  T228] R13: 00007f86fa4a3760 R14: 0000000000000002 R15: 00007f86fa49e9c0
| [  118.927279][  T228] ------------[ cut here ]------------
| [ 118.927860][ T228] WARNING: CPU: 3 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [  118.928594][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  118.929824][  T228] Tainted: [W]=WARN
[  118.930000][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 118.930359][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 118.930745][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  118.931976][  T228] RSP: 0018:ffffc90000b07520 EFLAGS: 00010246
[  118.932444][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  118.932976][  T228] RDX: 0000000000000000 RSI: ffff88800a26ac98 RDI: ffff888008cdae38
[  118.933542][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[  118.934001][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[  118.934400][  T228] R13: ffff88800a26a128 R14: ffff88800a26a008 R15: ffff88800a26a000
[  118.934755][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  118.935230][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  118.935573][  T228] CR2: 0000561dadd9f318 CR3: 0000000008e14004 CR4: 0000000000772ef0
[  118.936018][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  118.936569][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  118.937107][  T228] PKRU: 55555554
[  118.937292][  T228] Call Trace:
[  118.937463][  T228]  <TASK>
[ 118.937583][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 118.937837][ T228] ? __warn (kernel/panic.c:748) 
[ 118.938012][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 118.938251][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 118.938490][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 118.938742][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 118.938975][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 118.939233][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 118.939477][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 118.939789][ 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) 
[ 118.940086][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 118.940384][ T228] register_netdevice (net/core/dev.c:11033) 
[ 118.940636][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 118.940889][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 118.941225][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 118.941559][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 118.941808][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 118.942100][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 118.942446][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 118.942736][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 118.942972][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 118.943274][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 118.943494][ 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)) 
[ 118.943750][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 118.944075][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 118.944323][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 118.944660][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 118.945013][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 118.945274][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 118.945556][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 118.945819][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 118.946068][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 118.946300][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 118.946511][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 118.946749][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 118.947040][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 118.947302][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 118.947530][ 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) 
[ 118.947815][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 118.948070][ T228] device_add (drivers/base/core.c:3672) 
[ 118.948350][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 118.948562][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 118.948851][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 118.949135][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 118.949422][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 118.949663][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 118.949948][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 118.950225][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 118.950486][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 118.950719][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 118.950963][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 118.951197][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 118.951426][ T228] ksys_write (fs/read_write.c:731) 
[ 118.951587][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 118.951833][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 118.952049][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  118.952335][  T228] RIP: 0033:0x7f86fa3e7b77
[ 118.952557][ 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
[  118.953484][  T228] RSP: 002b:00007ffeff208e38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  118.953821][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f86fa3e7b77
[  118.954142][  T228] RDX: 0000000000000004 RSI: 0000556eab588330 RDI: 0000000000000001
[  118.954471][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[  118.954868][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000004
[  118.955197][  T228] R13: 00007f86fa4a3760 R14: 0000000000000004 R15: 00007f86fa49e9c0
| [  118.997651][  T228] ------------[ cut here ]------------
| [ 118.998090][ T228] WARNING: CPU: 3 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [  118.998661][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  118.999990][  T228] Tainted: [W]=WARN
[  119.000215][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 119.000455][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 119.000767][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  119.001526][  T228] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[  119.001800][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  119.002078][  T228] RDX: 0000000000000000 RSI: ffff88800a15ac98 RDI: ffff888008cdade8
[  119.002422][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[  119.002724][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[  119.003021][  T228] R13: ffff88800a15a128 R14: ffff88800a15a008 R15: ffff88800a15a000
[  119.003318][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  119.003680][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  119.003921][  T228] CR2: 0000561dadd9f318 CR3: 0000000008e14004 CR4: 0000000000772ef0
[  119.004211][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  119.004677][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  119.004973][  T228] PKRU: 55555554
[  119.005129][  T228] Call Trace:
[  119.005286][  T228]  <TASK>
[ 119.005389][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 119.005584][ T228] ? __warn (kernel/panic.c:748) 
[ 119.005755][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 119.005970][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 119.006187][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 119.006357][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 119.006562][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 119.006784][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 119.007036][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 119.007361][ 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) 
[ 119.007580][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 119.007796][ T228] register_netdevice (net/core/dev.c:11033) 
[ 119.008007][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 119.008240][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 119.008505][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 119.008847][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 119.009190][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 119.009447][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 119.009661][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 119.009931][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 119.010197][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 119.010390][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 119.010579][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 119.010795][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 119.011001][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 119.011155][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 119.011353][ T228] ? __schedule (kernel/sched/sched.h:1533 kernel/sched/core.c:6769) 
[ 119.011565][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 119.011938][ T228] ? __schedule (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 kernel/sched/sched.h:1533 kernel/sched/core.c:6769) 
[ 119.012195][ T228] ? __pfx___schedule (kernel/sched/core.c:6646) 
[ 119.012405][ T228] ksys_write (fs/read_write.c:731) 
[ 119.012553][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 119.012794][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 119.013030][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  119.013300][  T228] RIP: 0033:0x7f86fa3e7b77
[ 119.013507][ 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
[  119.014288][  T228] RSP: 002b:00007ffeff206738 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  119.014645][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f86fa3e7b77
[  119.014949][  T228] RDX: 0000000000000002 RSI: 0000556eab588330 RDI: 0000000000000001
[  119.015291][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[  119.015803][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000002
[  119.016093][  T228] R13: 00007f86fa4a3760 R14: 0000000000000002 R15: 00007f86fa49e9c0
| [  121.294494][  T228] ------------[ cut here ]------------
| [ 121.294771][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [  121.295455][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  121.296333][  T228] Tainted: [W]=WARN
[  121.296496][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 121.296781][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 121.297062][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  121.297775][  T228] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[  121.298096][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  121.298433][  T228] RDX: 0000000000000000 RSI: ffff88800a2a2c98 RDI: ffff888008cdade8
[  121.298757][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[  121.299067][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[  121.299398][  T228] R13: ffff88800a2a2128 R14: ffff88800a2a2008 R15: ffff88800a2a2000
[  121.299718][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  121.300091][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  121.300409][  T228] CR2: 00007ffeff209054 CR3: 0000000008e14003 CR4: 0000000000772ef0
[  121.300789][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  121.301186][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  121.301571][  T228] PKRU: 55555554
[  121.301762][  T228] Call Trace:
[  121.302046][  T228]  <TASK>
[ 121.302193][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 121.302392][ T228] ? __warn (kernel/panic.c:748) 
[ 121.302555][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 121.302754][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 121.302957][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 121.303110][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 121.303318][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 121.303534][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 121.303741][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 121.303984][ 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) 
[ 121.304198][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 121.304402][ T228] register_netdevice (net/core/dev.c:11033) 
[ 121.304610][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 121.304820][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 121.305035][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 121.305306][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 121.305571][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 121.305822][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 121.306022][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 121.306236][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 121.306487][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 121.306675][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 121.306871][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 121.307089][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 121.307299][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 121.307458][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 121.307656][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 121.307860][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 121.308058][ T228] ksys_write (fs/read_write.c:731) 
[ 121.308223][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 121.308427][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 121.308621][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  121.308858][  T228] RIP: 0033:0x7f86fa3e7b77
[ 121.309057][ 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
[  121.309793][  T228] RSP: 002b:00007ffeff206738 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  121.310088][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f86fa3e7b77
[  121.310401][  T228] RDX: 0000000000000002 RSI: 0000556eab588330 RDI: 0000000000000001
[  121.310689][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[  121.310978][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000002
[  121.311278][  T228] R13: 00007f86fa4a3760 R14: 0000000000000002 R15: 00007f86fa49e9c0
| [  123.280439][  T228] ------------[ cut here ]------------
| [ 123.280806][ T228] WARNING: CPU: 3 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [  123.281260][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  123.282161][  T228] Tainted: [W]=WARN
[  123.282343][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 123.282622][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 123.282891][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  123.283628][  T228] RSP: 0018:ffffc90000b07520 EFLAGS: 00010246
[  123.283894][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  123.284209][  T228] RDX: 0000000000000000 RSI: ffff888008efac98 RDI: ffff888008cdae38
[  123.284516][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[  123.284837][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[  123.285183][  T228] R13: ffff888008efa128 R14: ffff888008efa008 R15: ffff888008efa000
[  123.285497][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  123.285860][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  123.286122][  T228] CR2: 0000556eab55f000 CR3: 0000000008e14006 CR4: 0000000000772ef0
[  123.286440][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  123.286906][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  123.287265][  T228] PKRU: 55555554
[  123.287421][  T228] Call Trace:
[  123.287583][  T228]  <TASK>
[ 123.287690][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 123.287898][ T228] ? __warn (kernel/panic.c:748) 
[ 123.288066][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 123.288301][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 123.288518][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 123.288680][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 123.288887][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 123.289111][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 123.289341][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 123.289604][ 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) 
[ 123.289826][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 123.290058][ T228] register_netdevice (net/core/dev.c:11033) 
[ 123.290280][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 123.290502][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 123.290727][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 123.290988][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 123.291148][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 123.291427][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 123.291721][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 123.291988][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 123.292222][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 123.292483][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 123.292692][ 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)) 
[ 123.292850][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 123.293072][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 123.293309][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 123.293523][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 123.293736][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 123.293951][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 123.294221][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 123.294430][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 123.294638][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 123.294847][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 123.295057][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 123.295278][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 123.295496][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 123.295703][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 123.295911][ 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) 
[ 123.296131][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 123.296348][ T228] device_add (drivers/base/core.c:3672) 
[ 123.296563][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 123.296772][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 123.297006][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 123.297292][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 123.297560][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 123.297768][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 123.297982][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 123.298206][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 123.298419][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 123.298585][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 123.298797][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 123.299016][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 123.299281][ T228] ksys_write (fs/read_write.c:731) 
[ 123.299441][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 123.299657][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 123.299867][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  123.300124][  T228] RIP: 0033:0x7f86fa3e7b77
[ 123.300344][ 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
[  123.301055][  T228] RSP: 002b:00007ffeff208e38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  123.301373][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f86fa3e7b77
[  123.301680][  T228] RDX: 0000000000000004 RSI: 0000556eab588330 RDI: 0000000000000001
[  123.301987][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[  123.302308][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000004
[  123.302610][  T228] R13: 00007f86fa4a3760 R14: 0000000000000004 R15: 00007f86fa49e9c0
| [  123.420224][  T228] ------------[ cut here ]------------
| [ 123.420524][ T228] WARNING: CPU: 3 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [  123.420911][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  123.421690][  T228] Tainted: [W]=WARN
[  123.421848][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 123.422090][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 123.422341][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  123.423019][  T228] RSP: 0000:ffffc90000b07910 EFLAGS: 00010246
[  123.423262][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  123.423547][  T228] RDX: 0000000000000000 RSI: ffff88800a79ac98 RDI: ffff888008cdade8
[  123.423829][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[  123.424111][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[  123.424402][  T228] R13: ffff88800a79a128 R14: ffff88800a79a008 R15: ffff88800a79a000
[  123.424683][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  123.425203][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  123.425472][  T228] CR2: 00007f7f19e46004 CR3: 0000000008e14006 CR4: 0000000000772ef0
[  123.425793][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  123.426077][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  123.426938][  T228] PKRU: 55555554
[  123.427096][  T228] Call Trace:
[  123.427258][  T228]  <TASK>
[ 123.427357][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 123.427559][ T228] ? __warn (kernel/panic.c:748) 
[ 123.427714][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 123.427913][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 123.428131][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 123.428299][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 123.428505][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 123.428734][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 123.428961][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 123.429251][ 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) 
[ 123.429446][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 123.429638][ T228] register_netdevice (net/core/dev.c:11033) 
[ 123.429831][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 123.430038][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 123.430254][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 123.430502][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 123.430756][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 123.431017][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 123.431224][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 123.431421][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 123.431681][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 123.431883][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 123.432077][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 123.432286][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 123.432489][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 123.432645][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 123.432848][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 123.433036][ 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) 
[ 123.433248][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 123.433444][ T228] ksys_write (fs/read_write.c:731) 
[ 123.433588][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 123.433791][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 123.434009][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 123.434215][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  123.434458][  T228] RIP: 0033:0x7f86fa3e7b77
[ 123.434662][ 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
[  123.435371][  T228] RSP: 002b:00007ffeff208e38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  123.435652][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f86fa3e7b77
[  123.435948][  T228] RDX: 0000000000000002 RSI: 0000556eab588330 RDI: 0000000000000001
[  123.436235][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[  123.436530][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000002
[  123.436826][  T228] R13: 00007f86fa4a3760 R14: 0000000000000002 R15: 00007f86fa49e9c0
| [  124.102962][  T228] ------------[ cut here ]------------
| [ 124.103371][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [  124.104004][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  124.105421][  T228] Tainted: [W]=WARN
[  124.105686][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 124.106109][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 124.106542][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  124.107483][  T228] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[  124.107874][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  124.108389][  T228] RDX: 0000000000000000 RSI: ffff88800a3a2c98 RDI: ffff888008cdade8
[  124.108890][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[  124.109401][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[  124.109888][  T228] R13: ffff88800a3a2128 R14: ffff88800a3a2008 R15: ffff88800a3a2000
[  124.110404][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  124.110984][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  124.111423][  T228] CR2: 0000556eab588330 CR3: 0000000008e14005 CR4: 0000000000772ef0
[  124.111927][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  124.112456][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  124.112955][  T228] PKRU: 55555554
[  124.113233][  T228] Call Trace:
[  124.113498][  T228]  <TASK>
[ 124.113684][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 124.114044][ T228] ? __warn (kernel/panic.c:748) 
[ 124.114334][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 124.114689][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 124.115049][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 124.115340][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 124.115689][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 124.116060][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 124.116378][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 124.116679][ 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) 
[ 124.116991][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 124.117345][ T228] register_netdevice (net/core/dev.c:11033) 
[ 124.117740][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 124.118112][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 124.118506][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 124.118963][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 124.119453][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 124.119900][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 124.120259][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 124.120627][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 124.121064][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 124.121422][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 124.121761][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 124.122101][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 124.122486][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 124.122772][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 124.123127][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 124.123480][ 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) 
[ 124.123843][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 124.124224][ T228] ksys_write (fs/read_write.c:731) 
[ 124.124498][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 124.124836][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 124.125215][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 124.125561][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  124.125945][  T228] RIP: 0033:0x7f86fa3e7b77
[ 124.126185][ 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
[  124.127085][  T228] RSP: 002b:00007ffeff208e38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  124.127608][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f86fa3e7b77
[  124.128103][  T228] RDX: 0000000000000002 RSI: 0000556eab588330 RDI: 0000000000000001
[  124.128609][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[  124.129102][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000002
[  124.129610][  T228] R13: 00007f86fa4a3760 R14: 0000000000000002 R15: 00007f86fa49e9c0
| [  132.222603][  T228] ------------[ cut here ]------------
| [ 132.222845][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [  132.223271][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  132.224072][  T228] Tainted: [W]=WARN
[  132.224250][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 132.224555][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 132.224825][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  132.225595][  T228] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[  132.225846][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  132.226147][  T228] RDX: 0000000000000000 RSI: ffff88800dcb2c98 RDI: ffff888008cdade8
[  132.226508][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[  132.226800][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[  132.227109][  T228] R13: ffff88800dcb2128 R14: ffff88800dcb2008 R15: ffff88800dcb2000
[  132.227402][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  132.227744][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  132.228006][  T228] CR2: 00007f86fa32b440 CR3: 0000000008e14005 CR4: 0000000000772ef0
[  132.228302][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  132.228618][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  132.228924][  T228] PKRU: 55555554
[  132.229093][  T228] Call Trace:
[  132.229274][  T228]  <TASK>
[ 132.229381][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 132.229589][ T228] ? __warn (kernel/panic.c:748) 
[ 132.229741][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 132.229938][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 132.230142][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 132.230309][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 132.230544][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 132.230751][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 132.230954][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 132.231242][ 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) 
[ 132.231503][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 132.231718][ T228] register_netdevice (net/core/dev.c:11033) 
[ 132.231935][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 132.232179][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 132.232409][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 132.232692][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 132.232986][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 132.233298][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 132.233532][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 132.233777][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 132.234056][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 132.234287][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 132.234544][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 132.234758][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 132.234974][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 132.235143][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 132.235369][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 132.235598][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 132.235822][ T228] ksys_write (fs/read_write.c:731) 
[ 132.235983][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 132.236214][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 132.236436][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  132.236696][  T228] RIP: 0033:0x7f86fa3e7b77
[ 132.236926][ 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
[  132.237640][  T228] RSP: 002b:00007ffeff208e38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  132.237960][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f86fa3e7b77
[  132.238275][  T228] RDX: 0000000000000002 RSI: 0000556eab588330 RDI: 0000000000000001
[  132.238623][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[  132.238905][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000002
[  132.239199][  T228] R13: 00007f86fa4a3760 R14: 0000000000000002 R15: 00007f86fa49e9c0
| [  134.782343][  T228] ------------[ cut here ]------------
| [ 134.782687][ T228] WARNING: CPU: 3 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [  134.783137][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  134.784074][  T228] Tainted: [W]=WARN
[  134.784253][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 134.784535][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 134.784886][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  134.785804][  T228] RSP: 0018:ffffc90000b07520 EFLAGS: 00010246
[  134.786092][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  134.786504][  T228] RDX: 0000000000000000 RSI: ffff88800de72c98 RDI: ffff888008cdae38
[  134.786867][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[  134.787306][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[  134.787727][  T228] R13: ffff88800de72128 R14: ffff88800de72008 R15: ffff88800de72000
[  134.788133][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  134.788537][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  134.788848][  T228] CR2: 00007f86280c2a00 CR3: 0000000008e14002 CR4: 0000000000772ef0
[  134.789243][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  134.789579][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  134.789909][  T228] PKRU: 55555554
[  134.790109][  T228] Call Trace:
[  134.790344][  T228]  <TASK>
[ 134.790509][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 134.790747][ T228] ? __warn (kernel/panic.c:748) 
[ 134.790922][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 134.791205][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 134.791511][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 134.791732][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 134.792005][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 134.792282][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 134.792555][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 134.792879][ 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) 
[ 134.793198][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 134.793523][ T228] register_netdevice (net/core/dev.c:11033) 
[ 134.793760][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 134.794002][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 134.794270][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 134.794561][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 134.794736][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 134.795048][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 134.795427][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 134.795768][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 134.796008][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 134.796408][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 134.796630][ 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)) 
[ 134.796788][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 134.797043][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 134.797327][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 134.797611][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 134.797823][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 134.798060][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 134.798389][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 134.798648][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 134.798922][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 134.799213][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 134.799510][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 134.799878][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 134.800255][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 134.800607][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 134.800854][ 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) 
[ 134.801120][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 134.801411][ T228] device_add (drivers/base/core.c:3672) 
[ 134.801634][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 134.801840][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 134.802059][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 134.802354][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 134.802634][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 134.802842][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 134.803055][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 134.803281][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 134.803504][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 134.803674][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 134.803883][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 134.804103][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 134.804347][ T228] ksys_write (fs/read_write.c:731) 
[ 134.804506][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 134.804731][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 134.804939][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  134.805213][  T228] RIP: 0033:0x7f86fa3e7b77
[ 134.805481][ 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
[  134.806258][  T228] RSP: 002b:00007ffeff208e38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  134.806632][  T228] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f86fa3e7b77
[  134.806968][  T228] RDX: 0000000000000004 RSI: 0000556eab588330 RDI: 0000000000000001
[  134.807390][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[  134.807754][  T228] R10: 00007f86fa45a3e0 R11: 0000000000000246 R12: 0000000000000004
[  134.808057][  T228] R13: 00007f86fa4a3760 R14: 0000000000000004 R15: 00007f86fa49e9c0
| [  134.942807][  T228] ------------[ cut here ]------------
| [ 134.943156][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
| [  134.943601][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  134.944427][  T228] Tainted: [W]=WARN
[  134.944582][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 134.944832][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 134.945094][ T228] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  134.945796][  T228] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[  134.946052][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  134.946362][  T228] RDX: 0000000000000000 RSI: ffff88800a15ac98 RDI: ffff888008cdade8
[  134.946663][  T228] RBP: ffffffffbb324440 R08: 0000000000000000 R09: fffffbfff723d844
[  134.946970][  T228] R10: ffffffffb91ec227 R11: ffff888008cda300 R12: 0000000000000000
[  134.947284][  T228] R13: ffff88800a15a128 R14: ffff88800a15a008 R15: ffff88800a15a000
[  134.947589][  T228] FS:  00007f86fa2a6740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  134.947943][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  134.948202][  T228] CR2: 00007f86fa45a733 CR3: 0000000008e14004 CR4: 0000000000772ef0
[  134.948505][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  134.948989][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  134.949306][  T228] PKRU: 55555554
[  134.949458][  T228] Call Trace:
[  134.949614][  T228]  <TASK>
[ 134.949721][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 134.949925][ T228] ? __warn (kernel/panic.c:748) 
[ 134.950079][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 134.950292][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 134.950501][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 134.950664][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 134.950870][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 134.951082][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 134.951302][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 134.951561][ 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) 
[ 134.951771][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 134.951983][ T228] register_netdevice (net/core/dev.c:11033) 
[ 134.952212][ T228] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 134.952429][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 134.952649][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 134.952908][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 134.953196][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 134.953464][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 134.953669][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 134.953883][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 134.954137][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 134.954341][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 134.954544][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 134.954748][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 134.954961][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 134.955121][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 134.955343][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 134.955547][ 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) 
[ 134.955757][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 134.955969][ T228] ksys_write (fs/read_write.c:731) 
[ 134.956125][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 134.956332][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 134.956551][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 134.956757][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  134.957022][  T228] RIP: 0033:0x7f86fa3e7b77
[ 134.957236][ 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
[  134.957936][  T228] RSP: 002b:00007ffeff208e38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  134.958247][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f86fa3e7b77
[  134.958546][  T228] RDX: 0000000000000002 RSI: 0000556eab588330 RDI: 0000000000000001
[  134.958842][  T228] RBP: 0000556eab588330 R08: 0000000000000000 R09: 00007f86fa45a4e0
[  134.959151][  T228] R10: 00007f86fa45a3e0 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