======================================
| 0
| xx__-> [   31.144017][  T562] ------------[ cut here ]------------
| [ 31.144474][ T562] WARNING: CPU: 2 PID: 562 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   31.145228][  T562] Modules linked in: netdevsim psample unix_diag bonding
[   31.145923][  T562] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 31.146232][ T562] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 31.146553][ T562] Code: 00 e8 d3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 3b 99 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:	d3 48 fe             	rorl   %cl,-0x2(%rax)
   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 d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 3b 99 00       	call   0x993bb9
  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
[   31.147344][  T562] RSP: 0018:ffffc900006b7528 EFLAGS: 00010246
[   31.147639][  T562] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   31.148000][  T562] RDX: 0000000000000000 RSI: ffff888004f92cd0 RDI: ffff88800af40b78
[   31.148356][  T562] RBP: ffffffffab053580 R08: 0000000000000000 R09: fffffbfff51c2504
[   31.148708][  T562] R10: ffffffffa8e12827 R11: ffff88800af40040 R12: 0000000000000000
[   31.149059][  T562] R13: ffff888004f92130 R14: ffff888004f92008 R15: ffff888004f92000
[   31.149401][  T562] FS:  00007fed981ca1c0(0000) GS:ffff888065900000(0000) knlGS:0000000000000000
[   31.149793][  T562] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   31.150104][  T562] CR2: 00007fed8a1d37b0 CR3: 000000000a032002 CR4: 0000000000772ef0
[   31.150445][  T562] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   31.150787][  T562] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   31.151147][  T562] PKRU: 55555554
[   31.151340][  T562] Call Trace:
[   31.151522][  T562]  <TASK>
[ 31.151655][ T562] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 31.151903][ T562] ? __warn (kernel/panic.c:748) 
[ 31.152090][ T562] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 31.152435][ T562] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 31.152686][ T562] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 31.152887][ T562] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 31.153122][ T562] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 31.153369][ T562] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 31.153603][ T562] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 31.153854][ T562] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 31.154144][ T562] ? _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) 
[ 31.154387][ T562] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 31.154627][ T562] register_netdevice (net/core/dev.c:11003) 
[ 31.154897][ T562] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 31.155129][ T562] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 31.155378][ T562] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 31.155622][ T562] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 31.155929][ T562] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 31.156119][ T562] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 31.156422][ T562] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 31.156714][ T562] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 31.157024][ T562] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 31.157269][ T562] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 31.157560][ T562] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 31.157812][ T562] ? 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)) 
[ 31.157995][ T562] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 31.158237][ T562] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 31.158488][ T562] __driver_probe_device (drivers/base/dd.c:800) 
[ 31.158725][ T562] driver_probe_device (drivers/base/dd.c:830) 
[ 31.158974][ T562] __device_attach_driver (drivers/base/dd.c:959) 
[ 31.159212][ T562] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 31.159504][ T562] bus_for_each_drv (drivers/base/bus.c:462) 
[ 31.159740][ T562] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 31.159986][ T562] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 31.160219][ T562] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 31.160453][ T562] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 31.160693][ T562] __device_attach (drivers/base/dd.c:1030) 
[ 31.160946][ T562] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 31.161186][ T562] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 31.161419][ T562] ? 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) 
[ 31.161661][ T562] bus_probe_device (drivers/base/bus.c:537) 
[ 31.161909][ T562] device_add (drivers/base/core.c:3672) 
[ 31.162149][ T562] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 31.162372][ T562] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 31.162616][ T562] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 31.162927][ T562] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 31.163225][ T562] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 31.163455][ T562] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 31.163693][ T562] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 31.163933][ T562] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 31.164177][ T562] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 31.164366][ T562] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 31.164612][ T562] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 31.164856][ T562] ? 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) 
[ 31.165099][ T562] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 31.165339][ T562] ksys_write (fs/read_write.c:731) 
[ 31.165521][ T562] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 31.165751][ T562] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 31.166005][ T562] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 31.166245][ T562] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   31.166531][  T562] RIP: 0033:0x7fed983e4b77
[ 31.166776][ T562] 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
[   31.167552][  T562] RSP: 002b:00007fff338ac3b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   31.167925][  T562] RAX: ffffffffffffffda RBX: 00007fed981ca140 RCX: 00007fed983e4b77
[   31.168259][  T562] RDX: 0000000000000009 RSI: 000055f127bf71d0 RDI: 0000000000000006
[   31.168616][  T562] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[   31.168974][  T562] R10: 0000000000000002 R11: 0000000000000246 R12: 00007fed8a281340
[   31.169326][  T562] R13: 000055f127bf71d0 R14: 0000000000000006 R15: 000055f1279ce900
| [   34.344330][  T562] ------------[ cut here ]------------
| [ 34.344762][ T562] WARNING: CPU: 3 PID: 562 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   34.345346][  T562] Modules linked in: netdevsim psample unix_diag bonding
| [   34.346001][  T562] Tainted: [W]=WARN
[   34.346191][  T562] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 34.346453][ T562] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 34.346722][ T562] Code: 00 e8 d3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 3b 99 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:	d3 48 fe             	rorl   %cl,-0x2(%rax)
   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 d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 3b 99 00       	call   0x993bb9
  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
[   34.347455][  T562] RSP: 0018:ffffc900006b7528 EFLAGS: 00010246
[   34.347721][  T562] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   34.348043][  T562] RDX: 0000000000000000 RSI: ffff88800e172cd0 RDI: ffff88800af40b78
[   34.348368][  T562] RBP: ffffffffab053580 R08: 0000000000000000 R09: fffffbfff51c2504
[   34.348675][  T562] R10: ffffffffa8e12827 R11: ffff88800af40040 R12: 0000000000000000
[   34.349235][  T562] R13: ffff88800e172130 R14: ffff88800e172008 R15: ffff88800e172000
[   34.349547][  T562] FS:  00007fed981ca1c0(0000) GS:ffff888065980000(0000) knlGS:0000000000000000
[   34.349919][  T562] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   34.350181][  T562] CR2: 00007f9d9e90ca00 CR3: 000000000a032005 CR4: 0000000000772ef0
[   34.350492][  T562] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   34.350819][  T562] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   34.351136][  T562] PKRU: 55555554
[   34.351294][  T562] Call Trace:
[   34.351452][  T562]  <TASK>
[ 34.351561][ T562] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 34.351771][ T562] ? __warn (kernel/panic.c:748) 
[ 34.351946][ T562] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 34.352161][ T562] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 34.352380][ T562] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 34.352546][ T562] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 34.352758][ T562] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 34.353001][ T562] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 34.353213][ T562] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 34.353432][ T562] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 34.353697][ T562] ? _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) 
[ 34.353923][ T562] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 34.354138][ T562] register_netdevice (net/core/dev.c:11003) 
[ 34.354352][ T562] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 34.354561][ T562] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 34.354785][ T562] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 34.355022][ T562] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 34.355293][ T562] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 34.355459][ T562] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 34.355735][ T562] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 34.356018][ T562] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 34.356288][ T562] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 34.356510][ T562] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 34.356771][ T562] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 34.356996][ T562] ? 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)) 
[ 34.357157][ T562] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 34.357377][ T562] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 34.357594][ T562] __driver_probe_device (drivers/base/dd.c:800) 
[ 34.357820][ T562] driver_probe_device (drivers/base/dd.c:830) 
[ 34.358032][ T562] __device_attach_driver (drivers/base/dd.c:959) 
[ 34.358279][ T562] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 34.358556][ T562] bus_for_each_drv (drivers/base/bus.c:462) 
[ 34.358766][ T562] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 34.358981][ T562] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 34.359190][ T562] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 34.359395][ T562] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 34.359608][ T562] __device_attach (drivers/base/dd.c:1030) 
[ 34.359828][ T562] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 34.360038][ T562] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 34.360246][ T562] ? 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) 
[ 34.360462][ T562] bus_probe_device (drivers/base/bus.c:537) 
[ 34.360674][ T562] device_add (drivers/base/core.c:3672) 
[ 34.360900][ T562] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 34.361108][ T562] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 34.361334][ T562] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 34.361606][ T562] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 34.361885][ T562] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 34.362091][ T562] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 34.362304][ T562] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 34.362511][ T562] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 34.362725][ T562] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 34.362909][ T562] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 34.363117][ T562] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 34.363339][ T562] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:885) 
[ 34.363616][ T562] ksys_write (fs/read_write.c:731) 
[ 34.363777][ T562] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 34.364002][ T562] ? kernfs_fop_llseek (fs/kernfs/file.c:891) 
[ 34.364221][ T562] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 34.364436][ T562] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   34.364692][  T562] RIP: 0033:0x7fed983e4b77
[ 34.364918][ T562] 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
[   34.365630][  T562] RSP: 002b:00007fff338ac458 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   34.365954][  T562] RAX: ffffffffffffffda RBX: 00007fed981ca140 RCX: 00007fed983e4b77
[   34.366263][  T562] RDX: 000000000000000a RSI: 000055f127bfb0e0 RDI: 0000000000000006
[   34.366570][  T562] RBP: 000000000000000a R08: 0000000000000000 R09: 0000000000000000
[   34.366888][  T562] R10: 0000000000000002 R11: 0000000000000246 R12: 00007fed8a10c280
[   34.367200][  T562] R13: 000055f127bfb0e0 R14: 0000000000000006 R15: 000055f1279ce900
| [   37.265571][  T562] ------------[ cut here ]------------
| [ 37.266028][ T562] WARNING: CPU: 2 PID: 562 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   37.266483][  T562] Modules linked in: netdevsim psample unix_diag bonding
| [   37.267312][  T562] Tainted: [W]=WARN
[   37.267494][  T562] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 37.267776][ T562] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 37.268101][ T562] Code: 00 e8 d3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 3b 99 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:	d3 48 fe             	rorl   %cl,-0x2(%rax)
   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 d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 3b 99 00       	call   0x993bb9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   37.268890][  T562] RSP: 0018:ffffc900006b7528 EFLAGS: 00010246
[   37.269179][  T562] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   37.269515][  T562] RDX: 0000000000000000 RSI: ffff88800e1b2cd0 RDI: ffff88800af40b78
[   37.269865][  T562] RBP: ffffffffab053580 R08: 0000000000000000 R09: fffffbfff51c2504
[   37.270204][  T562] R10: ffffffffa8e12827 R11: ffff88800af40040 R12: 0000000000000000
[   37.270541][  T562] R13: ffff88800e1b2130 R14: ffff88800e1b2008 R15: ffff88800e1b2000
[   37.270887][  T562] FS:  00007fed981ca1c0(0000) GS:ffff888065900000(0000) knlGS:0000000000000000
[   37.271278][  T562] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   37.271563][  T562] CR2: 00007f9d9e90ca00 CR3: 000000000a032006 CR4: 0000000000772ef0
[   37.271928][  T562] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   37.272265][  T562] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   37.272603][  T562] PKRU: 55555554
[   37.272780][  T562] Call Trace:
[   37.272972][  T562]  <TASK>
[ 37.273103][ T562] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 37.273337][ T562] ? __warn (kernel/panic.c:748) 
[ 37.273523][ T562] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 37.273757][ T562] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 37.274009][ T562] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 37.274191][ T562] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 37.274420][ T562] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 37.274666][ T562] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 37.274915][ T562] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 37.275154][ T562] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 37.275442][ T562] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 37.275686][ T562] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 37.275955][ T562] register_netdevice (net/core/dev.c:11003) 
[ 37.276196][ T562] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 37.276430][ T562] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 37.276679][ T562] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 37.276949][ T562] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 37.277243][ T562] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 37.277426][ T562] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 37.277728][ T562] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 37.278037][ T562] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 37.278341][ T562] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 37.278587][ T562] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 37.278891][ T562] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 37.279126][ T562] ? 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)) 
[ 37.279309][ T562] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 37.279552][ T562] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 37.279823][ T562] __driver_probe_device (drivers/base/dd.c:800) 
[ 37.280066][ T562] driver_probe_device (drivers/base/dd.c:830) 
[ 37.280303][ T562] __device_attach_driver (drivers/base/dd.c:959) 
[ 37.280538][ T562] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 37.280835][ T562] bus_for_each_drv (drivers/base/bus.c:462) 
[ 37.281069][ T562] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 37.281303][ T562] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 37.281536][ T562] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 37.281766][ T562] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 37.282022][ T562] __device_attach (drivers/base/dd.c:1030) 
[ 37.282254][ T562] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 37.282487][ T562] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 37.282721][ T562] ? 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) 
[ 37.282976][ T562] bus_probe_device (drivers/base/bus.c:537) 
[ 37.283212][ T562] device_add (drivers/base/core.c:3672) 
[ 37.283451][ T562] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 37.283679][ T562] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 37.283952][ T562] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 37.284252][ T562] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 37.284556][ T562] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 37.284788][ T562] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 37.285041][ T562] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 37.285271][ T562] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 37.285512][ T562] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 37.285704][ T562] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 37.285949][ T562] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 37.286206][ T562] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:885) 
[ 37.286503][ T562] ksys_write (fs/read_write.c:731) 
[ 37.286684][ T562] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 37.286928][ T562] ? kernfs_fop_llseek (fs/kernfs/file.c:891) 
[ 37.287173][ T562] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 37.287402][ T562] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   37.287685][  T562] RIP: 0033:0x7fed983e4b77
[ 37.287949][ T562] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   37.288720][  T562] RSP: 002b:00007fff338ac458 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   37.289133][  T562] RAX: ffffffffffffffda RBX: 00007fed981ca140 RCX: 00007fed983e4b77
[   37.289471][  T562] RDX: 0000000000000008 RSI: 000055f127bfb0e0 RDI: 0000000000000006
[   37.289816][  T562] RBP: 0000000000000008 R08: 0000000000000000 R09: 0000000000000000
[   37.290150][  T562] R10: 0000000000000002 R11: 0000000000000246 R12: 00007fed8a10c280


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