======================================
| 0
| xx__-> [    9.743762][  T227] ------------[ cut here ]------------
| [ 9.744199][ T227] WARNING: CPU: 3 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [    9.744695][  T227] Modules linked in: netdevsim
[    9.745327][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.745592][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.745860][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[    9.746587][  T227] RSP: 0018:ffffc90000b37520 EFLAGS: 00010246
[    9.746852][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.747165][  T227] RDX: 0000000000000000 RSI: ffff888009852c98 RDI: ffff88800a3b2e38
[    9.747480][  T227] RBP: ffffffffb4d23440 R08: 0000000000000000 R09: fffffbfff657d83c
[    9.747797][  T227] R10: ffffffffb2bec1e7 R11: ffff88800a3b2300 R12: 0000000000000000
[    9.748107][  T227] R13: ffff888009852128 R14: ffff888009852008 R15: ffff888009852000
[    9.748433][  T227] FS:  00007f4156f7b740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[    9.748811][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.749077][  T227] CR2: 000055d5642cbb58 CR3: 0000000005154002 CR4: 0000000000772ef0
[    9.749400][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.749713][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.750025][  T227] PKRU: 55555554
[    9.750194][  T227] Call Trace:
[    9.750356][  T227]  <TASK>
[ 9.750469][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.750687][ T227] ? __warn (kernel/panic.c:748) 
[ 9.750849][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.751058][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.751283][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.751447][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.751661][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.751885][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.752107][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.752381][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 9.752596][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.752809][ T227] register_netdevice (net/core/dev.c:11003) 
[ 9.753028][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.753257][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.753486][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.753755][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.753917][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.754201][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.754475][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.754741][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.754959][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.755230][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.755444][ T227] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 9.755604][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.755818][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.756038][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.756256][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 9.756465][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.756674][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.756929][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.757136][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.757349][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.757560][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.757767][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.757980][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 9.758195][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.758401][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.758608][ T227] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 9.758823][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 9.759039][ T227] device_add (drivers/base/core.c:3672) 
[ 9.759264][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.759472][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.759692][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.759962][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.760241][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.760449][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.760666][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.760871][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.761083][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.761258][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.761472][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.761687][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.761915][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.762138][ T227] ksys_write (fs/read_write.c:731) 
[ 9.762309][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.762521][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.762745][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.762962][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.763228][  T227] RIP: 0033:0x7f41570bcb77
[ 9.763448][ T227] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[    9.764182][  T227] RSP: 002b:00007ffd2bb0ca28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.764501][  T227] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f41570bcb77
[    9.764812][  T227] RDX: 0000000000000007 RSI: 000055d5642cab50 RDI: 0000000000000001
[    9.765126][  T227] RBP: 000055d5642cab50 R08: 0000000000000003 R09: 0000000000000000
[    9.765590][  T227] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000007
[    9.765899][  T227] R13: 00007f4157178760 R14: 0000000000000007 R15: 00007f41571739c0
| [    9.828691][  T227] ------------[ cut here ]------------
| [ 9.829100][ T227] WARNING: CPU: 0 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [    9.829574][  T227] Modules linked in: netdevsim
| [    9.830276][  T227] Tainted: [W]=WARN
[    9.830468][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.830776][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.831070][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[    9.831923][  T227] RSP: 0018:ffffc90000b37520 EFLAGS: 00010246
[    9.832217][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.832545][  T227] RDX: 0000000000000000 RSI: ffff88800a77ac98 RDI: ffff88800a3b2e38
[    9.832876][  T227] RBP: ffffffffb4d23440 R08: 0000000000000000 R09: fffffbfff657d83c
[    9.833225][  T227] R10: ffffffffb2bec1e7 R11: ffff88800a3b2300 R12: 0000000000000000
[    9.833569][  T227] R13: ffff88800a77a128 R14: ffff88800a77a008 R15: ffff88800a77a000
[    9.833902][  T227] FS:  00007f4156f7b740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[    9.834303][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.834589][  T227] CR2: 000055d564153288 CR3: 0000000005154002 CR4: 0000000000772ef0
[    9.834961][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.835308][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.835647][  T227] PKRU: 55555554
[    9.835819][  T227] Call Trace:
[    9.835986][  T227]  <TASK>
[ 9.836112][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.836351][ T227] ? __warn (kernel/panic.c:748) 
[ 9.836526][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.836762][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.836998][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.837180][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.837413][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.837658][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.837897][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.838192][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 9.838424][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.838655][ T227] register_netdevice (net/core/dev.c:11003) 
[ 9.838917][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.839169][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.839424][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.839708][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.839888][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.840198][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.840488][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.840779][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.841027][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.841325][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.841563][ T227] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 9.841742][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.841980][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.842227][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.842463][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 9.842696][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.842964][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.843259][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.843492][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.843715][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.843944][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.844185][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.844423][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 9.844647][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.844874][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.845094][ T227] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 9.845342][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 9.845574][ T227] device_add (drivers/base/core.c:3672) 
[ 9.845804][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.846024][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.846271][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.846573][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.846892][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.847121][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.847370][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.847597][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.847880][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.848058][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.848299][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.848514][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.848741][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.848970][ T227] ksys_write (fs/read_write.c:731) 
[ 9.849142][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.849367][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.849597][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.849815][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.850084][  T227] RIP: 0033:0x7f41570bcb77
[ 9.850322][ T227] Code: Unable to access opcode bytes at 0x7f41570bcb4d.

Code starting with the faulting instruction
===========================================
[    9.850602][  T227] RSP: 002b:00007ffd2bb0cb58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.850971][  T227] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f41570bcb77
[    9.851313][  T227] RDX: 0000000000000007 RSI: 000055d5642cab50 RDI: 0000000000000001
[    9.851637][  T227] RBP: 000055d5642cab50 R08: 0000000000000000 R09: 00007f415712f4e0
[    9.851972][  T227] R10: 00007f415712f3e0 R11: 0000000000000246 R12: 0000000000000007
[    9.852308][  T227] R13: 00007f4157178760 R14: 0000000000000007 R15: 00007f41571739c0
| [    9.948949][  T227] ------------[ cut here ]------------
| [ 9.949398][ T227] WARNING: CPU: 2 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [    9.949830][  T227] Modules linked in: netdevsim
| [    9.950671][  T227] Tainted: [W]=WARN
[    9.950842][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.951122][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.951410][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[    9.952131][  T227] RSP: 0000:ffffc90000b37520 EFLAGS: 00010246
[    9.952417][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.952740][  T227] RDX: 0000000000000000 RSI: ffff88800269ac98 RDI: ffff88800a3b2e38
[    9.953062][  T227] RBP: ffffffffb4d23440 R08: 0000000000000000 R09: fffffbfff657d83c
[    9.953388][  T227] R10: ffffffffb2bec1e7 R11: ffff88800a3b2300 R12: 0000000000000000
[    9.953706][  T227] R13: ffff88800269a128 R14: ffff88800269a008 R15: ffff88800269a000
[    9.954027][  T227] FS:  00007f4156f7b740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.954404][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.954671][  T227] CR2: 00007f22d641c840 CR3: 0000000005154005 CR4: 0000000000772ef0
[    9.954999][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.955333][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.955650][  T227] PKRU: 55555554
[    9.955820][  T227] Call Trace:
[    9.956002][  T227]  <TASK>
[ 9.956123][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.956355][ T227] ? __warn (kernel/panic.c:748) 
[ 9.956530][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.956765][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.956993][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.957173][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.957392][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.957627][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.957858][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.958131][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 9.958374][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.958598][ T227] register_netdevice (net/core/dev.c:11003) 
[ 9.958823][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.959051][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.959295][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.959569][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.959746][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.960031][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.960319][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.960597][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.960831][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.961101][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.961358][ T227] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 9.961535][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.961774][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.962003][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.962235][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 9.962457][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.962683][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.962953][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.963185][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.963401][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.963618][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.963839][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.964062][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 9.964290][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.964517][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.964738][ T227] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 9.964960][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 9.965190][ T227] device_add (drivers/base/core.c:3672) 
[ 9.965409][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.965631][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.965860][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.966156][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.966441][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.966660][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.966884][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.967101][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.967351][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.967533][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.967760][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.967973][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.968217][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.968455][ T227] ksys_write (fs/read_write.c:731) 
[ 9.968631][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.968844][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.969075][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.969304][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.969577][  T227] RIP: 0033:0x7f41570bcb77
[ 9.969805][ T227] Code: Unable to access opcode bytes at 0x7f41570bcb4d.

Code starting with the faulting instruction
===========================================
[    9.970079][  T227] RSP: 002b:00007ffd2bb0cc88 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.970414][  T227] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f41570bcb77
[    9.970735][  T227] RDX: 0000000000000007 RSI: 000055d5642cab50 RDI: 0000000000000001
[    9.971057][  T227] RBP: 000055d5642cab50 R08: 0000000000000000 R09: 00007f415712f4e0
[    9.971383][  T227] R10: 00007f415712f3e0 R11: 0000000000000246 R12: 0000000000000007
[    9.971713][  T227] R13: 00007f4157178760 R14: 0000000000000007 R15: 00007f41571739c0
| [   10.339852][  T270] ------------[ cut here ]------------
| [ 10.340237][ T270] WARNING: CPU: 1 PID: 270 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   10.340623][  T270] Modules linked in: netdevsim
| [   10.341254][  T270] Tainted: [W]=WARN
[   10.341400][  T270] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.341641][ T270] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.341893][ T270] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   10.342577][  T270] RSP: 0018:ffffc900006a71e8 EFLAGS: 00010246
[   10.342825][  T270] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.343117][  T270] RDX: 0000000000000000 RSI: ffff888009292c98 RDI: ffff88800986d080
[   10.343416][  T270] RBP: ffff888009820040 R08: 0000000000000000 R09: fffffbfff657d83c
[   10.343701][  T270] R10: ffffffffb2bec1e7 R11: ffff88800986c5c0 R12: 0000000000000000
[   10.343985][  T270] R13: ffff888009292128 R14: ffff888009292008 R15: ffff888009292000
[   10.344300][  T270] FS:  00007f8ff3ee9800(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   10.344632][  T270] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.344870][  T270] CR2: 00007f8ff4028440 CR3: 00000000055ca004 CR4: 0000000000772ef0
[   10.345169][  T270] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.345452][  T270] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.345737][  T270] PKRU: 55555554
[   10.345880][  T270] Call Trace:
[   10.346025][  T270]  <TASK>
[ 10.346123][ T270] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.346327][ T270] ? __warn (kernel/panic.c:748) 
[ 10.346478][ T270] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.346671][ T270] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.346870][ T270] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.347016][ T270] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.347214][ T270] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.347418][ T270] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.347608][ T270] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 10.347802][ T270] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.348044][ T270] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 10.348250][ T270] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.348443][ T270] register_netdevice (net/core/dev.c:11003) 
[ 10.348640][ T270] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.348842][ T270] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.349053][ T270] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.349312][ T270] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.349567][ T270] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 10.349816][ T270] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 10.350060][ T270] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 10.350313][ T270] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 10.350564][ T270] devlink_reload (net/devlink/dev.c:474) 
[ 10.350758][ T270] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 10.350944][ T270] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 10.351139][ T270] ? cap_capable (security/commoncap.c:131) 
[ 10.351338][ T270] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1146 fs/file.c:1160) 
[ 10.351493][ T270] devlink_nl_reload_doit (net/devlink/dev.c:584) 
[ 10.351696][ T270] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 10.351936][ T270] ? __nla_parse (lib/nlattr.c:732) 
[ 10.352133][ T270] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1115) 
[ 10.352355][ T270] ? __pfx_genl_family_rcv_msg_doit (net/netlink/genetlink.c:1088) 
[ 10.352606][ T270] ? cap_capable (security/commoncap.c:131) 
[ 10.352794][ T270] ? validate_chain (kernel/locking/lockdep.c:3799 kernel/locking/lockdep.c:3819 kernel/locking/lockdep.c:3874) 
[ 10.352993][ T270] genl_family_rcv_msg (net/netlink/genetlink.c:1195) 
[ 10.353206][ T270] ? __pfx_genl_family_rcv_msg (net/netlink/genetlink.c:1160) 
[ 10.353423][ T270] ? __pfx_devlink_nl_pre_doit_dev_lock (net/devlink/netlink.c:257) 
[ 10.353654][ T270] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 10.353886][ T270] ? __pfx_devlink_nl_post_doit_dev_lock (net/devlink/netlink.c:288) 
[ 10.354131][ T270] genl_rcv_msg (net/netlink/genetlink.c:65 net/netlink/genetlink.c:1211) 
[ 10.354334][ T270] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 10.354522][ T270] ? __pfx_genl_rcv_msg (net/netlink/genetlink.c:1201) 
[ 10.354713][ T270] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 10.354923][ T270] ? genl_rcv (net/netlink/genetlink.c:1219) 
[ 10.355067][ T270] ? __pfx_down_read (kernel/locking/rwsem.c:1522) 
[ 10.355269][ T270] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 10.355466][ T270] genl_rcv (net/netlink/genetlink.c:1220) 
[ 10.355609][ T270] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 10.355803][ T270] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 10.355993][ T270] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 10.356205][ T270] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 10.356399][ T270] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 10.356584][ T270] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 10.356774][ T270] ? __might_fault (mm/memory.c:6851 mm/memory.c:6844) 
[ 10.356971][ T270] __sys_sendto (net/socket.c:709 net/socket.c:724 net/socket.c:2178) 
[ 10.357174][ T270] ? __pfx___sys_sendto (net/socket.c:2145) 
[ 10.357363][ T270] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.357550][ T270] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 10.357752][ T270] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 10.357944][ T270] ? __rseq_handle_notify_resume (kernel/rseq.c:420) 
[ 10.358191][ T270] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:403) 
[ 10.358429][ T270] ? __pfx___x64_sys_openat (fs/open.c:1454) 
[ 10.358625][ T270] __x64_sys_sendto (net/socket.c:2181) 
[ 10.358813][ T270] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.359049][ T270] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.359249][ T270] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.359491][  T270] RIP: 0033:0x7f8ff40f5a4a
[ 10.359684][ T270] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89
All code
========
   0:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   4:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   b:	eb b8                	jmp    0xffffffffffffffc5
   d:	0f 1f 00             	nopl   (%rax)
  10:	f3 0f 1e fa          	endbr64
  14:	41 89 ca             	mov    %ecx,%r10d
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 15                	jne    0x38
  23:	b8 2c 00 00 00       	mov    $0x2c,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 7e                	ja     0xb0
  32:	c3                   	ret
  33:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  38:	41 54                	push   %r12
  3a:	48 83 ec 30          	sub    $0x30,%rsp
  3e:	44                   	rex.R
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 7e                	ja     0x86
   8:	c3                   	ret
   9:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   e:	41 54                	push   %r12
  10:	48 83 ec 30          	sub    $0x30,%rsp
  14:	44                   	rex.R
  15:	89                   	.byte 0x89
[   10.360342][  T270] RSP: 002b:00007ffc5a932688 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   10.360624][  T270] RAX: ffffffffffffffda RBX: 000000001de1bb00 RCX: 00007f8ff40f5a4a
[   10.360901][  T270] RDX: 0000000000000040 RSI: 000000001de1bb00 RDI: 0000000000000005
[   10.361187][  T270] RBP: 000000001de1b910 R08: 00007f8ff4299200 R09: 000000000000000c
[   10.361465][  T270] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000040f200
[   10.361755][  T270] R13: 000000001de1b910 R14: 0000000000000000 R15: 0000000000000001
| [   10.542724][  T275] ------------[ cut here ]------------
| [ 10.543123][ T275] WARNING: CPU: 0 PID: 275 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   10.543632][  T275] Modules linked in: netdevsim
| [   10.544215][  T275] Tainted: [W]=WARN
[   10.544376][  T275] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.544626][ T275] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.544884][ T275] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   10.545630][  T275] RSP: 0018:ffffc900006a71e8 EFLAGS: 00010246
[   10.545886][  T275] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.546200][  T275] RDX: 0000000000000000 RSI: ffff888004e82c98 RDI: ffff88800a000b00
[   10.546500][  T275] RBP: ffff888009820040 R08: 0000000000000000 R09: fffffbfff657d83c
[   10.546801][  T275] R10: ffffffffb2bec1e7 R11: ffff88800a000040 R12: 0000000000000000
[   10.547106][  T275] R13: ffff888004e82128 R14: ffff888004e82008 R15: ffff888004e82000
[   10.547417][  T275] FS:  00007fbb78b0e800(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   10.547767][  T275] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.548024][  T275] CR2: 00007fbb78c4d440 CR3: 000000000a544002 CR4: 0000000000772ef0
[   10.548341][  T275] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.548640][  T275] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.548942][  T275] PKRU: 55555554
[   10.549096][  T275] Call Trace:
[   10.549263][  T275]  <TASK>
[ 10.549370][ T275] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.549573][ T275] ? __warn (kernel/panic.c:748) 
[ 10.549731][ T275] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.549935][ T275] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.550143][ T275] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.550313][ T275] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.550516][ T275] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.550732][ T275] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.550939][ T275] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 10.551164][ T275] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.551423][ T275] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 10.551631][ T275] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.551850][ T275] register_netdevice (net/core/dev.c:11003) 
[ 10.552061][ T275] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.552289][ T275] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.552514][ T275] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.552776][ T275] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.553047][ T275] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 10.553328][ T275] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 10.553592][ T275] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 10.553850][ T275] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 10.554122][ T275] devlink_reload (net/devlink/dev.c:474) 
[ 10.554346][ T275] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 10.554552][ T275] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 10.554762][ T275] ? cap_capable (security/commoncap.c:131) 
[ 10.554962][ T275] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1146 fs/file.c:1160) 
[ 10.555127][ T275] devlink_nl_reload_doit (net/devlink/dev.c:584) 
[ 10.555354][ T275] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 10.555609][ T275] ? __nla_parse (lib/nlattr.c:732) 
[ 10.555823][ T275] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1115) 
[ 10.556038][ T275] ? __pfx_genl_family_rcv_msg_doit (net/netlink/genetlink.c:1088) 
[ 10.556319][ T275] ? cap_capable (security/commoncap.c:131) 
[ 10.556524][ T275] ? validate_chain (kernel/locking/lockdep.c:3799 kernel/locking/lockdep.c:3819 kernel/locking/lockdep.c:3874) 
[ 10.556735][ T275] genl_family_rcv_msg (net/netlink/genetlink.c:1195) 
[ 10.556949][ T275] ? __pfx_genl_family_rcv_msg (net/netlink/genetlink.c:1160) 
[ 10.557166][ T275] ? __pfx_devlink_nl_pre_doit_dev_lock (net/devlink/netlink.c:257) 
[ 10.557418][ T275] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 10.557670][ T275] ? __pfx_devlink_nl_post_doit_dev_lock (net/devlink/netlink.c:288) 
[ 10.557938][ T275] genl_rcv_msg (net/netlink/genetlink.c:65 net/netlink/genetlink.c:1211) 
[ 10.558142][ T275] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 10.558359][ T275] ? __pfx_genl_rcv_msg (net/netlink/genetlink.c:1201) 
[ 10.558569][ T275] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 10.558785][ T275] ? genl_rcv (net/netlink/genetlink.c:1219) 
[ 10.558946][ T275] ? __pfx_down_read (kernel/locking/rwsem.c:1522) 
[ 10.559170][ T275] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 10.559390][ T275] genl_rcv (net/netlink/genetlink.c:1220) 
[ 10.559543][ T275] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 10.559748][ T275] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 10.559959][ T275] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 10.560186][ T275] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 10.560393][ T275] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 10.560595][ T275] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 10.560801][ T275] ? __might_fault (mm/memory.c:6851 mm/memory.c:6844) 
[ 10.561018][ T275] __sys_sendto (net/socket.c:709 net/socket.c:724 net/socket.c:2178) 
[ 10.561236][ T275] ? __pfx___sys_sendto (net/socket.c:2145) 
[ 10.561439][ T275] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.561654][ T275] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 10.561880][ T275] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 10.562093][ T275] ? __rseq_handle_notify_resume (kernel/rseq.c:420) 
[ 10.562358][ T275] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 10.562563][ T275] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:403) 
[ 10.562819][ T275] ? __pfx___x64_sys_openat (fs/open.c:1454) 
[ 10.563043][ T275] __x64_sys_sendto (net/socket.c:2181) 
[ 10.563261][ T275] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.563513][ T275] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.563722][ T275] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.563973][  T275] RIP: 0033:0x7fbb78d1aa4a
[ 10.564195][ T275] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89
All code
========
   0:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   4:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   b:	eb b8                	jmp    0xffffffffffffffc5
   d:	0f 1f 00             	nopl   (%rax)
  10:	f3 0f 1e fa          	endbr64
  14:	41 89 ca             	mov    %ecx,%r10d
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 15                	jne    0x38
  23:	b8 2c 00 00 00       	mov    $0x2c,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 7e                	ja     0xb0
  32:	c3                   	ret
  33:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  38:	41 54                	push   %r12
  3a:	48 83 ec 30          	sub    $0x30,%rsp
  3e:	44                   	rex.R
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 7e                	ja     0x86
   8:	c3                   	ret
   9:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   e:	41 54                	push   %r12
  10:	48 83 ec 30          	sub    $0x30,%rsp
  14:	44                   	rex.R
  15:	89                   	.byte 0x89
[   10.564901][  T275] RSP: 002b:00007ffc9df53dd8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   10.565219][  T275] RAX: ffffffffffffffda RBX: 000000002a9f4b00 RCX: 00007fbb78d1aa4a
[   10.565519][  T275] RDX: 0000000000000040 RSI: 000000002a9f4b00 RDI: 0000000000000005
[   10.565815][  T275] RBP: 000000002a9f4910 R08: 00007fbb78ebe200 R09: 000000000000000c
[   10.566127][  T275] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000040f200
[   10.566437][  T275] R13: 000000002a9f4910 R14: 0000000000000000 R15: 0000000000000001
| [   10.730343][  T280] ------------[ cut here ]------------
| [ 10.730722][ T280] WARNING: CPU: 0 PID: 280 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   10.731135][  T280] Modules linked in: netdevsim
| [   10.731824][  T280] Tainted: [W]=WARN
[   10.731978][  T280] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.732410][ T280] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.732688][ T280] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   10.733410][  T280] RSP: 0018:ffffc900005671e8 EFLAGS: 00010246
[   10.733663][  T280] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.733973][  T280] RDX: 0000000000000000 RSI: ffff888005022c98 RDI: ffff888004db5080
[   10.734283][  T280] RBP: ffff888009820040 R08: 0000000000000000 R09: fffffbfff657d83c
[   10.734583][  T280] R10: ffffffffb2bec1e7 R11: ffff888004db45c0 R12: 0000000000000000
[   10.734880][  T280] R13: ffff888005022128 R14: ffff888005022008 R15: ffff888005022000
[   10.735220][  T280] FS:  00007fc3a1914800(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   10.735578][  T280] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.735829][  T280] CR2: 00007fc3a1a53440 CR3: 00000000093ba005 CR4: 0000000000772ef0
[   10.736134][  T280] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.736447][  T280] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.736750][  T280] PKRU: 55555554
[   10.736903][  T280] Call Trace:
[   10.737053][  T280]  <TASK>
[ 10.737173][ T280] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.737377][ T280] ? __warn (kernel/panic.c:748) 
[ 10.737534][ T280] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.737737][ T280] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.737945][ T280] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.738106][ T280] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.738323][ T280] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.738538][ T280] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.738741][ T280] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 10.738956][ T280] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.739243][ T280] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 10.739465][ T280] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.739678][ T280] register_netdevice (net/core/dev.c:11003) 
[ 10.739887][ T280] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.740099][ T280] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.740331][ T280] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.740595][ T280] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.740864][ T280] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 10.741143][ T280] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 10.741420][ T280] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 10.741686][ T280] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 10.741961][ T280] devlink_reload (net/devlink/dev.c:474) 
[ 10.742183][ T280] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 10.742389][ T280] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 10.742595][ T280] ? cap_capable (security/commoncap.c:131) 
[ 10.742797][ T280] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1146 fs/file.c:1160) 
[ 10.742960][ T280] devlink_nl_reload_doit (net/devlink/dev.c:584) 
[ 10.743198][ T280] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 10.743454][ T280] ? __nla_parse (lib/nlattr.c:732) 
[ 10.743668][ T280] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1115) 
[ 10.743879][ T280] ? __pfx_genl_family_rcv_msg_doit (net/netlink/genetlink.c:1088) 
[ 10.744231][ T280] ? cap_capable (security/commoncap.c:131) 
[ 10.744437][ T280] ? validate_chain (kernel/locking/lockdep.c:3799 kernel/locking/lockdep.c:3819 kernel/locking/lockdep.c:3874) 
[ 10.744645][ T280] genl_family_rcv_msg (net/netlink/genetlink.c:1195) 
[ 10.744852][ T280] ? __pfx_genl_family_rcv_msg (net/netlink/genetlink.c:1160) 
[ 10.745060][ T280] ? __pfx_devlink_nl_pre_doit_dev_lock (net/devlink/netlink.c:257) 
[ 10.745325][ T280] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 10.745582][ T280] ? __pfx_devlink_nl_post_doit_dev_lock (net/devlink/netlink.c:288) 
[ 10.745846][ T280] genl_rcv_msg (net/netlink/genetlink.c:65 net/netlink/genetlink.c:1211) 
[ 10.746054][ T280] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 10.746271][ T280] ? __pfx_genl_rcv_msg (net/netlink/genetlink.c:1201) 
[ 10.746474][ T280] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 10.746693][ T280] ? genl_rcv (net/netlink/genetlink.c:1219) 
[ 10.746846][ T280] ? __pfx_down_read (kernel/locking/rwsem.c:1522) 
[ 10.747065][ T280] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 10.747303][ T280] genl_rcv (net/netlink/genetlink.c:1220) 
[ 10.747460][ T280] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 10.747668][ T280] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 10.747874][ T280] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 10.748084][ T280] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 10.748306][ T280] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 10.748506][ T280] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 10.748717][ T280] ? __might_fault (mm/memory.c:6851 mm/memory.c:6844) 
[ 10.748936][ T280] __sys_sendto (net/socket.c:709 net/socket.c:724 net/socket.c:2178) 
[ 10.749143][ T280] ? __pfx___sys_sendto (net/socket.c:2145) 
[ 10.749356][ T280] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.749561][ T280] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 10.749773][ T280] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 10.749985][ T280] ? __rseq_handle_notify_resume (kernel/rseq.c:420) 
[ 10.750253][ T280] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 10.750460][ T280] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:403) 
[ 10.750717][ T280] ? __pfx___x64_sys_openat (fs/open.c:1454) 
[ 10.750932][ T280] __x64_sys_sendto (net/socket.c:2181) 
[ 10.751144][ T280] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.751427][ T280] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.751632][ T280] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.751901][  T280] RIP: 0033:0x7fc3a1b20a4a
[ 10.752109][ T280] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89
All code
========
   0:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   4:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   b:	eb b8                	jmp    0xffffffffffffffc5
   d:	0f 1f 00             	nopl   (%rax)
  10:	f3 0f 1e fa          	endbr64
  14:	41 89 ca             	mov    %ecx,%r10d
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 15                	jne    0x38
  23:	b8 2c 00 00 00       	mov    $0x2c,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 7e                	ja     0xb0
  32:	c3                   	ret
  33:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  38:	41 54                	push   %r12
  3a:	48 83 ec 30          	sub    $0x30,%rsp
  3e:	44                   	rex.R
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 7e                	ja     0x86
   8:	c3                   	ret
   9:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   e:	41 54                	push   %r12
  10:	48 83 ec 30          	sub    $0x30,%rsp
  14:	44                   	rex.R
  15:	89                   	.byte 0x89
[   10.752817][  T280] RSP: 002b:00007ffe07106ab8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   10.753129][  T280] RAX: ffffffffffffffda RBX: 0000000026318b00 RCX: 00007fc3a1b20a4a
[   10.753445][  T280] RDX: 0000000000000040 RSI: 0000000026318b00 RDI: 0000000000000005
[   10.753743][  T280] RBP: 0000000026318910 R08: 00007fc3a1cc4200 R09: 000000000000000c
[   10.754045][  T280] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000040f200
[   10.754356][  T280] R13: 0000000026318910 R14: 0000000000000000 R15: 0000000000000001
| [   34.168403][   T11] ------------[ cut here ]------------
| [ 34.168943][ T11] WARNING: CPU: 0 PID: 11 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) 
| [   34.169532][   T11] Modules linked in: netdevsim
| [   34.170352][   T11] Tainted: [W]=WARN
[   34.170569][   T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   34.170941][   T11] Workqueue: netns cleanup_net
[ 34.172367][ T11] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 34.172768][ T11] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   34.173764][   T11] RSP: 0018:ffffc900000b7620 EFLAGS: 00010246
[   34.174212][   T11] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   34.174688][   T11] RDX: 0000000000000000 RSI: ffff888005f7ac98 RDI: ffff888001a82e10
[   34.175115][   T11] RBP: ffffffffb4d23440 R08: 0000000000000000 R09: fffffbfff657d83c
[   34.175533][   T11] R10: ffffffffb2bec1e7 R11: ffff888001a82300 R12: 0000000000000000
[   34.175956][   T11] R13: ffff888005f7a128 R14: ffff888005f7a008 R15: ffff888005f7a000
[   34.176426][   T11] FS:  0000000000000000(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   34.176983][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   34.177370][   T11] CR2: 00007f22d60d1650 CR3: 0000000009690005 CR4: 0000000000772ef0
[   34.178222][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   34.178676][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   34.179144][   T11] PKRU: 55555554
[   34.179389][   T11] Call Trace:
[   34.179612][   T11]  <TASK>
[ 34.179767][ T11] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 34.180035][ T11] ? __warn (kernel/panic.c:748) 
[ 34.180274][ T11] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 34.180595][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 34.180938][ T11] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 34.181222][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 34.181568][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 34.181895][ T11] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 34.182208][ T11] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 34.182593][ T11] ? _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) 
[ 34.182903][ T11] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 34.183268][ T11] register_netdevice (net/core/dev.c:11003) 
[ 34.183598][ T11] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 34.183911][ T11] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 34.184263][ T11] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 34.184636][ T11] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 34.185040][ T11] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 34.185541][ T11] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 34.185952][ T11] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 34.186340][ T11] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 34.186696][ T11] devlink_reload (net/devlink/dev.c:474) 
[ 34.187009][ T11] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 34.187337][ T11] ? devlinks_xa_find_get (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/devlink/core.c:343) 
[ 34.187697][ T11] devlink_pernet_pre_exit (net/devlink/core.c:288 net/devlink/devl_internal.h:114 net/devlink/core.c:513) 
[ 34.188051][ T11] ? __pfx_devlink_pernet_pre_exit (net/devlink/core.c:496) 
[ 34.188448][ T11] cleanup_net (net/core/net_namespace.c:162 net/core/net_namespace.c:632) 
[ 34.188756][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 34.189069][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:594) 
[ 34.189350][ T11] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 34.189661][ T11] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 34.189962][ T11] ? process_one_work (kernel/workqueue.c:3214) 
[ 34.190308][ T11] process_one_work (kernel/workqueue.c:3238) 
[ 34.190634][ T11] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 34.190967][ T11] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 34.191323][ T11] ? assign_work (kernel/workqueue.c:1200) 
[ 34.191671][ T11] worker_thread (kernel/workqueue.c:3313 kernel/workqueue.c:3400) 
[ 34.192004][ T11] ? __pfx_worker_thread (kernel/workqueue.c:3346) 
[ 34.192354][ T11] kthread (kernel/kthread.c:464) 
[ 34.192613][ T11] ? __pfx_kthread (kernel/kthread.c:413) 
[ 34.192943][ T11] ? __pfx_kthread (kernel/kthread.c:413) 
[ 34.193310][ T11] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 34.193641][ T11] ? __pfx_kthread (kernel/kthread.c:413) 


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