======================================
| 0
| xx__-> [   10.161941][  T227] ------------[ cut here ]------------
| [ 10.162346][ T227] WARNING: CPU: 1 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   10.162837][  T227] Modules linked in: netdevsim
[   10.163427][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.163700][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.163965][ 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
[   10.164683][  T227] RSP: 0018:ffffc90000b17520 EFLAGS: 00010246
[   10.164944][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.165357][  T227] RDX: 0000000000000000 RSI: ffff88800b5cac98 RDI: ffff8880026e50f8
[   10.165673][  T227] RBP: ffffffffa7d23440 R08: 0000000000000000 R09: fffffbfff4b7d83c
[   10.166053][  T227] R10: ffffffffa5bec1e7 R11: ffff8880026e45c0 R12: 0000000000000000
[   10.166363][  T227] R13: ffff88800b5ca128 R14: ffff88800b5ca008 R15: ffff88800b5ca000
[   10.166668][  T227] FS:  00007f29984c0740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   10.167037][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.167296][  T227] CR2: 0000560289bf0b58 CR3: 000000000a914003 CR4: 0000000000772ef0
[   10.167601][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.167905][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.168218][  T227] PKRU: 55555554
[   10.168377][  T227] Call Trace:
[   10.168540][  T227]  <TASK>
[ 10.168650][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.168858][ T227] ? __warn (kernel/panic.c:748) 
[ 10.169030][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.169239][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.169454][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.169610][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.169812][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.170042][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.170258][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.170520][ 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) 
[ 10.170730][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.170938][ T227] register_netdevice (net/core/dev.c:11003) 
[ 10.171162][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.171379][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.171607][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.171867][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 10.172035][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.172300][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.172577][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 10.172839][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 10.173068][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 10.173329][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 10.173539][ 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)) 
[ 10.173694][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 10.173908][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 10.174130][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 10.174337][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 10.174540][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 10.174750][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 10.175008][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 10.175212][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 10.175416][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.175625][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.175825][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 10.176047][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 10.176252][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 10.176454][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.176658][ 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) 
[ 10.176871][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 10.177094][ T227] device_add (drivers/base/core.c:3672) 
[ 10.177304][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 10.177503][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 10.177727][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 10.178000][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 10.178261][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.178462][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.178671][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.178871][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.179097][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.179261][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.179469][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 10.179670][ 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) 
[ 10.179882][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 10.180103][ T227] ksys_write (fs/read_write.c:731) 
[ 10.180259][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.180461][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.180680][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.180889][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.181149][  T227] RIP: 0033:0x7f2998601b77
[ 10.181364][ 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
[   10.182076][  T227] RSP: 002b:00007ffc3d2fcf18 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.182394][  T227] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f2998601b77
[   10.182695][  T227] RDX: 0000000000000007 RSI: 0000560289befb50 RDI: 0000000000000001
[   10.183009][  T227] RBP: 0000560289befb50 R08: 0000000000000003 R09: 0000000000000000
[   10.183311][  T227] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000007
[   10.183619][  T227] R13: 00007f29986bd760 R14: 0000000000000007 R15: 00007f29986b89c0
| [   10.235272][  T227] ------------[ cut here ]------------
| [ 10.235637][ T227] WARNING: CPU: 1 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   10.236141][  T227] Modules linked in: netdevsim
| [   10.236784][  T227] Tainted: [W]=WARN
[   10.236957][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.237236][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.237499][ 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
[   10.238229][  T227] RSP: 0018:ffffc90000b17520 EFLAGS: 00010246
[   10.238489][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.238791][  T227] RDX: 0000000000000000 RSI: ffff88800ab4ac98 RDI: ffff8880026e50f8
[   10.239108][  T227] RBP: ffffffffa7d23440 R08: 0000000000000000 R09: fffffbfff4b7d83c
[   10.239411][  T227] R10: ffffffffa5bec1e7 R11: ffff8880026e45c0 R12: 0000000000000000
[   10.239716][  T227] R13: ffff88800ab4a128 R14: ffff88800ab4a008 R15: ffff88800ab4a000
[   10.240131][  T227] FS:  00007f29984c0740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   10.240483][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.240742][  T227] CR2: 0000560289a78288 CR3: 000000000a914003 CR4: 0000000000772ef0
[   10.241072][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.241376][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.241679][  T227] PKRU: 55555554
[   10.241839][  T227] Call Trace:
[   10.242006][  T227]  <TASK>
[ 10.242116][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.242335][ T227] ? __warn (kernel/panic.c:748) 
[ 10.242498][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.242707][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.242918][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.243089][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.243302][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.243522][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.243741][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.244104][ 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) 
[ 10.244324][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.244539][ T227] register_netdevice (net/core/dev.c:11003) 
[ 10.244760][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.244990][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.245217][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.245491][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 10.245655][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.245927][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.246209][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 10.246481][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 10.246701][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 10.246985][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 10.247204][ 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)) 
[ 10.247364][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 10.247578][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 10.247798][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 10.248023][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 10.248236][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 10.248453][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 10.248715][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 10.248927][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 10.249146][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.249360][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.249570][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 10.249786][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 10.250012][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 10.250225][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.250439][ 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) 
[ 10.250660][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 10.250876][ T227] device_add (drivers/base/core.c:3672) 
[ 10.251103][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 10.251311][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 10.251694][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 10.251966][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 10.252253][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.252480][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.252701][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.252915][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.253148][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.253327][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.253553][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 10.253767][ 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) 
[ 10.254334][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 10.254572][ T227] ksys_write (fs/read_write.c:731) 
[ 10.254739][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.254951][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.255198][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.255419][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.255680][  T227] RIP: 0033:0x7f2998601b77
[ 10.255898][ 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
[   10.256641][  T227] RSP: 002b:00007ffc3d2fd048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.256981][  T227] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f2998601b77
[   10.257299][  T227] RDX: 0000000000000007 RSI: 0000560289befb50 RDI: 0000000000000001
[   10.257617][  T227] RBP: 0000560289befb50 R08: 0000000000000000 R09: 00007f29986744e0
[   10.257931][  T227] R10: 00007f29986743e0 R11: 0000000000000246 R12: 0000000000000007
[   10.258269][  T227] R13: 00007f29986bd760 R14: 0000000000000007 R15: 00007f29986b89c0
| [   10.334643][  T227] ------------[ cut here ]------------
| [ 10.335019][ T227] WARNING: CPU: 1 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   10.335533][  T227] Modules linked in: netdevsim
| [   10.336365][  T227] Tainted: [W]=WARN
[   10.336525][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.336787][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.337153][ 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
[   10.337863][  T227] RSP: 0018:ffffc90000b17520 EFLAGS: 00010246
[   10.338221][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.338529][  T227] RDX: 0000000000000000 RSI: ffff88800aabac98 RDI: ffff8880026e50f8
[   10.338834][  T227] RBP: ffffffffa7d23440 R08: 0000000000000000 R09: fffffbfff4b7d83c
[   10.339238][  T227] R10: ffffffffa5bec1e7 R11: ffff8880026e45c0 R12: 0000000000000000
[   10.339541][  T227] R13: ffff88800aaba128 R14: ffff88800aaba008 R15: ffff88800aaba000
[   10.339846][  T227] FS:  00007f29984c0740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   10.340264][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.340519][  T227] CR2: 0000560289b51368 CR3: 000000000a914003 CR4: 0000000000772ef0
[   10.340825][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.341141][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.341446][  T227] PKRU: 55555554
[   10.341603][  T227] Call Trace:
[   10.341759][  T227]  <TASK>
[ 10.341868][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.342095][ T227] ? __warn (kernel/panic.c:748) 
[ 10.342257][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.342506][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.342719][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.342875][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.343090][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.343309][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.343525][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.343782][ 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) 
[ 10.344007][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.344219][ T227] register_netdevice (net/core/dev.c:11003) 
[ 10.344431][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.344647][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.344868][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.345140][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 10.345299][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.345568][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.345829][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 10.346105][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 10.346324][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 10.346584][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 10.346793][ 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)) 
[ 10.346956][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 10.347182][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 10.347396][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 10.347604][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 10.347812][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 10.348033][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 10.348286][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 10.348496][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 10.348697][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.348902][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.349119][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 10.349329][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 10.349533][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 10.349738][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.349944][ 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) 
[ 10.350171][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 10.350383][ T227] device_add (drivers/base/core.c:3672) 
[ 10.350591][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 10.350793][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 10.351022][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 10.351288][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 10.351562][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.351764][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.351988][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.352192][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.352415][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.352580][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.352791][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 10.353008][ 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) 
[ 10.353221][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 10.353436][ T227] ksys_write (fs/read_write.c:731) 
[ 10.353594][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.353797][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.354029][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.354238][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.354489][  T227] RIP: 0033:0x7f2998601b77
[ 10.354711][ T227] Code: Unable to access opcode bytes at 0x7f2998601b4d.

Code starting with the faulting instruction
===========================================
[   10.355026][  T227] RSP: 002b:00007ffc3d2fd178 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.355332][  T227] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f2998601b77
[   10.355635][  T227] RDX: 0000000000000007 RSI: 0000560289befb50 RDI: 0000000000000001
[   10.355944][  T227] RBP: 0000560289befb50 R08: 0000000000000000 R09: 00007f29986744e0
[   10.356258][  T227] R10: 00007f29986743e0 R11: 0000000000000246 R12: 0000000000000007
[   10.356560][  T227] R13: 00007f29986bd760 R14: 0000000000000007 R15: 00007f29986b89c0
| [   10.737190][  T272] ------------[ cut here ]------------
| [ 10.737507][ T272] WARNING: CPU: 0 PID: 272 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) 
| [   10.738022][  T272] Modules linked in: netdevsim
| [   10.738591][  T272] Tainted: [W]=WARN
[   10.738747][  T272] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.739013][ T272] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.739279][ T272] 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
[   10.739986][  T272] RSP: 0018:ffffc900005e71e8 EFLAGS: 00010246
[   10.740244][  T272] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.740544][  T272] RDX: 0000000000000000 RSI: ffff88800a2bac98 RDI: ffff888009a9adc0
[   10.740846][  T272] RBP: ffff88800ab60040 R08: 0000000000000000 R09: fffffbfff4b7d83c
[   10.741153][  T272] R10: ffffffffa5bec1e7 R11: ffff888009a9a300 R12: 0000000000000000
[   10.741452][  T272] R13: ffff88800a2ba128 R14: ffff88800a2ba008 R15: ffff88800a2ba000
[   10.741749][  T272] FS:  00007f407fb4b800(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   10.742107][  T272] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.742379][  T272] CR2: 00007f0b81e0dbd0 CR3: 00000000097ac002 CR4: 0000000000772ef0
[   10.742680][  T272] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.742997][  T272] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.743300][  T272] PKRU: 55555554
[   10.743453][  T272] Call Trace:
[   10.743607][  T272]  <TASK>
[ 10.743714][ T272] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.743917][ T272] ? __warn (kernel/panic.c:748) 
[ 10.744149][ T272] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.744357][ T272] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.744577][ T272] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.744736][ T272] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.744941][ T272] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.745170][ T272] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.745404][ T272] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 10.745611][ T272] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.745868][ T272] ? _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) 
[ 10.746087][ T272] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.746294][ T272] register_netdevice (net/core/dev.c:11003) 
[ 10.746502][ T272] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.746722][ T272] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.746943][ T272] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.747215][ T272] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.747483][ T272] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 10.747747][ T272] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 10.748016][ T272] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 10.748289][ T272] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 10.748554][ T272] devlink_reload (net/devlink/dev.c:474) 
[ 10.748759][ T272] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 10.748959][ T272] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 10.749178][ T272] ? cap_capable (security/commoncap.c:131) 
[ 10.749378][ T272] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1146 fs/file.c:1160) 
[ 10.749543][ T272] devlink_nl_reload_doit (net/devlink/dev.c:584) 
[ 10.749746][ T272] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 10.750010][ T272] ? __nla_parse (lib/nlattr.c:732) 
[ 10.750222][ T272] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1115) 
[ 10.750427][ T272] ? __pfx_genl_family_rcv_msg_doit (net/netlink/genetlink.c:1088) 
[ 10.750691][ T272] ? cap_capable (security/commoncap.c:131) 
[ 10.750890][ T272] ? validate_chain (kernel/locking/lockdep.c:3799 kernel/locking/lockdep.c:3819 kernel/locking/lockdep.c:3874) 
[ 10.751120][ T272] genl_family_rcv_msg (net/netlink/genetlink.c:1195) 
[ 10.751327][ T272] ? __pfx_genl_family_rcv_msg (net/netlink/genetlink.c:1160) 
[ 10.751530][ T272] ? __pfx_devlink_nl_pre_doit_dev_lock (net/devlink/netlink.c:257) 
[ 10.751778][ T272] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 10.752038][ T272] ? __pfx_devlink_nl_post_doit_dev_lock (net/devlink/netlink.c:288) 
[ 10.752310][ T272] genl_rcv_msg (net/netlink/genetlink.c:65 net/netlink/genetlink.c:1211) 
[ 10.752521][ T272] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 10.752723][ T272] ? __pfx_genl_rcv_msg (net/netlink/genetlink.c:1201) 
[ 10.752926][ T272] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 10.753152][ T272] ? genl_rcv (net/netlink/genetlink.c:1219) 
[ 10.753304][ T272] ? __pfx_down_read (kernel/locking/rwsem.c:1522) 
[ 10.753507][ T272] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 10.753714][ T272] genl_rcv (net/netlink/genetlink.c:1220) 
[ 10.753864][ T272] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 10.754084][ T272] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 10.754290][ T272] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 10.754498][ T272] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 10.754702][ T272] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 10.754902][ T272] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 10.755119][ T272] ? __might_fault (mm/memory.c:6851 mm/memory.c:6844) 
[ 10.755328][ T272] __sys_sendto (net/socket.c:709 net/socket.c:724 net/socket.c:2178) 
[ 10.755532][ T272] ? __pfx___sys_sendto (net/socket.c:2145) 
[ 10.755735][ T272] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.755938][ T272] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 10.756161][ T272] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 10.756367][ T272] ? __rseq_handle_notify_resume (kernel/rseq.c:420) 
[ 10.756622][ T272] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:403) 
[ 10.756879][ T272] ? __pfx___x64_sys_openat (fs/open.c:1454) 
[ 10.757100][ T272] __x64_sys_sendto (net/socket.c:2181) 
[ 10.757304][ T272] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.757554][ T272] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.757760][ T272] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.758023][  T272] RIP: 0033:0x7f407fd57a4a
[ 10.758231][ T272] 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
[   10.758928][  T272] RSP: 002b:00007fff001b1a08 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   10.759238][  T272] RAX: ffffffffffffffda RBX: 0000000039eadb00 RCX: 00007f407fd57a4a
[   10.759538][  T272] RDX: 0000000000000040 RSI: 0000000039eadb00 RDI: 0000000000000005
[   10.759841][  T272] RBP: 0000000039ead910 R08: 00007f407fefb200 R09: 000000000000000c
[   10.760147][  T272] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000040f200
[   10.760446][  T272] R13: 0000000039ead910 R14: 0000000000000000 R15: 0000000000000001
| [   10.949134][  T278] ------------[ cut here ]------------
| [ 10.949535][ T278] WARNING: CPU: 2 PID: 278 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) 
| [   10.949935][  T278] Modules linked in: netdevsim
| [   10.950603][  T278] Tainted: [W]=WARN
[   10.950760][  T278] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.951047][ T278] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.951305][ T278] 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
[   10.951979][  T278] RSP: 0018:ffffc900006171e8 EFLAGS: 00010246
[   10.952234][  T278] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.952563][  T278] RDX: 0000000000000000 RSI: ffff888004fa2c98 RDI: ffff888008fe2dc0
[   10.952854][  T278] RBP: ffff88800ab60040 R08: 0000000000000000 R09: fffffbfff4b7d83c
[   10.953165][  T278] R10: ffffffffa5bec1e7 R11: ffff888008fe2300 R12: 0000000000000000
[   10.953455][  T278] R13: ffff888004fa2128 R14: ffff888004fa2008 R15: ffff888004fa2000
[   10.953750][  T278] FS:  00007f443e67b800(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   10.954097][  T278] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.954351][  T278] CR2: 00007f443e7ba440 CR3: 000000000a8d6004 CR4: 0000000000772ef0
[   10.954647][  T278] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.954943][  T278] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.955245][  T278] PKRU: 55555554
[   10.955403][  T278] Call Trace:
[   10.955560][  T278]  <TASK>
[ 10.955672][ T278] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.955877][ T278] ? __warn (kernel/panic.c:748) 
[ 10.956048][ T278] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.956254][ T278] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.956464][ T278] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.956623][ T278] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.956829][ T278] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.957056][ T278] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.957261][ T278] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 10.957467][ T278] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.957725][ T278] ? _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) 
[ 10.957933][ T278] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.958149][ T278] register_netdevice (net/core/dev.c:11003) 
[ 10.958360][ T278] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.958573][ T278] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.958792][ T278] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.959061][ T278] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.959327][ T278] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 10.959590][ T278] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 10.959844][ T278] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 10.960113][ T278] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 10.960373][ T278] devlink_reload (net/devlink/dev.c:474) 
[ 10.960582][ T278] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 10.960782][ T278] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 10.961007][ T278] ? cap_capable (security/commoncap.c:131) 
[ 10.961205][ T278] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1146 fs/file.c:1160) 
[ 10.961376][ T278] devlink_nl_reload_doit (net/devlink/dev.c:584) 
[ 10.961583][ T278] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 10.961837][ T278] ? __nla_parse (lib/nlattr.c:732) 
[ 10.962061][ T278] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1115) 
[ 10.962271][ T278] ? __pfx_genl_family_rcv_msg_doit (net/netlink/genetlink.c:1088) 
[ 10.962539][ T278] ? cap_capable (security/commoncap.c:131) 
[ 10.962740][ T278] ? validate_chain (kernel/locking/lockdep.c:3799 kernel/locking/lockdep.c:3819 kernel/locking/lockdep.c:3874) 
[ 10.962949][ T278] genl_family_rcv_msg (net/netlink/genetlink.c:1195) 
[ 10.963165][ T278] ? __pfx_genl_family_rcv_msg (net/netlink/genetlink.c:1160) 
[ 10.963370][ T278] ? __pfx_devlink_nl_pre_doit_dev_lock (net/devlink/netlink.c:257) 
[ 10.963625][ T278] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 10.963870][ T278] ? __pfx_devlink_nl_post_doit_dev_lock (net/devlink/netlink.c:288) 
[ 10.964142][ T278] genl_rcv_msg (net/netlink/genetlink.c:65 net/netlink/genetlink.c:1211) 
[ 10.964371][ T278] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 10.964572][ T278] ? __pfx_genl_rcv_msg (net/netlink/genetlink.c:1201) 
[ 10.964780][ T278] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 10.965004][ T278] ? genl_rcv (net/netlink/genetlink.c:1219) 
[ 10.965162][ T278] ? __pfx_down_read (kernel/locking/rwsem.c:1522) 
[ 10.965363][ T278] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 10.965575][ T278] genl_rcv (net/netlink/genetlink.c:1220) 
[ 10.965729][ T278] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 10.965941][ T278] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 10.966157][ T278] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 10.966370][ T278] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 10.966576][ T278] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 10.966773][ T278] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 10.966988][ T278] ? __might_fault (mm/memory.c:6851 mm/memory.c:6844) 
[ 10.967198][ T278] __sys_sendto (net/socket.c:709 net/socket.c:724 net/socket.c:2178) 
[ 10.967408][ T278] ? __pfx___sys_sendto (net/socket.c:2145) 
[ 10.967607][ T278] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.967809][ T278] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 10.968034][ T278] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 10.968245][ T278] ? __rseq_handle_notify_resume (kernel/rseq.c:420) 
[ 10.968488][ T278] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 10.968693][ T278] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:403) 
[ 10.968946][ T278] ? __pfx___x64_sys_openat (fs/open.c:1454) 
[ 10.969167][ T278] __x64_sys_sendto (net/socket.c:2181) 
[ 10.969369][ T278] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.969618][ T278] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.969821][ T278] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.970076][  T278] RIP: 0033:0x7f443e887a4a
[ 10.970283][ T278] 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
[   10.970941][  T278] RSP: 002b:00007ffcc26b4bc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   10.971248][  T278] RAX: ffffffffffffffda RBX: 000000001326db00 RCX: 00007f443e887a4a
[   10.971538][  T278] RDX: 0000000000000040 RSI: 000000001326db00 RDI: 0000000000000005
[   10.971831][  T278] RBP: 000000001326d910 R08: 00007f443ea2b200 R09: 000000000000000c
[   10.972130][  T278] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000040f200
[   10.972425][  T278] R13: 000000001326d910 R14: 0000000000000000 R15: 0000000000000001
| [   11.154331][  T283] ------------[ cut here ]------------
| [ 11.154763][ T283] WARNING: CPU: 2 PID: 283 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) 
| [   11.155175][  T283] Modules linked in: netdevsim
| [   11.155839][  T283] Tainted: [W]=WARN
[   11.156017][  T283] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 11.156280][ T283] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.156542][ T283] 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
[   11.157238][  T283] RSP: 0018:ffffc900006371e8 EFLAGS: 00010246
[   11.157489][  T283] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   11.157777][  T283] RDX: 0000000000000000 RSI: ffff88800b50ac98 RDI: ffff888005aeadc0
[   11.158086][  T283] RBP: ffff88800ab60040 R08: 0000000000000000 R09: fffffbfff4b7d83c
[   11.158379][  T283] R10: ffffffffa5bec1e7 R11: ffff888005aea300 R12: 0000000000000000
[   11.158670][  T283] R13: ffff88800b50a128 R14: ffff88800b50a008 R15: ffff88800b50a000
[   11.158962][  T283] FS:  00007fbc55c02800(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   11.159317][  T283] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   11.159569][  T283] CR2: 00007fbc55d41440 CR3: 000000000aba2002 CR4: 0000000000772ef0
[   11.159863][  T283] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   11.160167][  T283] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   11.160463][  T283] PKRU: 55555554
[   11.160619][  T283] Call Trace:
[   11.160777][  T283]  <TASK>
[ 11.160888][ T283] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.161104][ T283] ? __warn (kernel/panic.c:748) 
[ 11.161265][ T283] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.161466][ T283] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 11.161677][ T283] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 11.161834][ T283] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 11.162055][ T283] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 11.162269][ T283] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.162478][ T283] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 11.162686][ T283] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 11.162938][ T283] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 11.163156][ T283] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 11.163371][ T283] register_netdevice (net/core/dev.c:11003) 
[ 11.163583][ T283] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 11.163793][ T283] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 11.164028][ T283] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 11.164288][ T283] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 11.164554][ T283] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 11.164825][ T283] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 11.165096][ T283] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 11.165352][ T283] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 11.165612][ T283] devlink_reload (net/devlink/dev.c:474) 
[ 11.165825][ T283] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 11.166037][ T283] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 11.166252][ T283] ? cap_capable (security/commoncap.c:131) 
[ 11.166454][ T283] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1146 fs/file.c:1160) 
[ 11.166622][ T283] devlink_nl_reload_doit (net/devlink/dev.c:584) 
[ 11.166828][ T283] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 11.167089][ T283] ? __nla_parse (lib/nlattr.c:732) 
[ 11.167301][ T283] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1115) 
[ 11.167506][ T283] ? __pfx_genl_family_rcv_msg_doit (net/netlink/genetlink.c:1088) 
[ 11.167772][ T283] ? cap_capable (security/commoncap.c:131) 
[ 11.167982][ T283] ? validate_chain (kernel/locking/lockdep.c:3799 kernel/locking/lockdep.c:3819 kernel/locking/lockdep.c:3874) 
[ 11.168193][ T283] genl_family_rcv_msg (net/netlink/genetlink.c:1195) 
[ 11.168396][ T283] ? __pfx_genl_family_rcv_msg (net/netlink/genetlink.c:1160) 
[ 11.168600][ T283] ? __pfx_devlink_nl_pre_doit_dev_lock (net/devlink/netlink.c:257) 
[ 11.168842][ T283] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 11.169098][ T283] ? __pfx_devlink_nl_post_doit_dev_lock (net/devlink/netlink.c:288) 
[ 11.169359][ T283] genl_rcv_msg (net/netlink/genetlink.c:65 net/netlink/genetlink.c:1211) 
[ 11.169565][ T283] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 11.169763][ T283] ? __pfx_genl_rcv_msg (net/netlink/genetlink.c:1201) 
[ 11.169977][ T283] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 11.170192][ T283] ? genl_rcv (net/netlink/genetlink.c:1219) 
[ 11.170351][ T283] ? __pfx_down_read (kernel/locking/rwsem.c:1522) 
[ 11.170553][ T283] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 11.170768][ T283] genl_rcv (net/netlink/genetlink.c:1220) 
[ 11.170924][ T283] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 11.171141][ T283] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 11.171347][ T283] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 11.171554][ T283] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 11.171761][ T283] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 11.171959][ T283] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 11.172204][ T283] ? __might_fault (mm/memory.c:6851 mm/memory.c:6844) 
[ 11.172429][ T283] __sys_sendto (net/socket.c:709 net/socket.c:724 net/socket.c:2178) 
[ 11.172640][ T283] ? __pfx___sys_sendto (net/socket.c:2145) 
[ 11.172838][ T283] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 11.173051][ T283] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 11.173262][ T283] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 11.173471][ T283] ? __rseq_handle_notify_resume (kernel/rseq.c:420) 
[ 11.173717][ T283] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 11.173926][ T283] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:403) 
[ 11.174188][ T283] ? __pfx___x64_sys_openat (fs/open.c:1454) 
[ 11.174398][ T283] __x64_sys_sendto (net/socket.c:2181) 
[ 11.174601][ T283] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 11.174846][ T283] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 11.175061][ T283] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   11.175312][  T283] RIP: 0033:0x7fbc55e0ea4a
[ 11.175518][ T283] 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
[   11.176189][  T283] RSP: 002b:00007ffef6b229c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   11.176485][  T283] RAX: ffffffffffffffda RBX: 000000003fa5bb00 RCX: 00007fbc55e0ea4a
[   11.176780][  T283] RDX: 0000000000000040 RSI: 000000003fa5bb00 RDI: 0000000000000005
[   11.177084][  T283] RBP: 000000003fa5b910 R08: 00007fbc55fb2200 R09: 000000000000000c
[   11.177376][  T283] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000040f200
[   11.177663][  T283] R13: 000000003fa5b910 R14: 0000000000000000 R15: 0000000000000001
| [   32.221124][   T11] ------------[ cut here ]------------
| [ 32.221490][ T11] WARNING: CPU: 2 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) 
| [   32.221869][   T11] Modules linked in: netdevsim
| [   32.222517][   T11] Tainted: [W]=WARN
[   32.222677][   T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.222928][   T11] Workqueue: netns cleanup_net
[ 32.223193][ T11] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 32.223450][ 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
[   32.224271][   T11] RSP: 0018:ffffc900000b7620 EFLAGS: 00010246
[   32.224528][   T11] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   32.224825][   T11] RDX: 0000000000000000 RSI: ffff88800265ac98 RDI: ffff888001a82e10
[   32.225136][   T11] RBP: ffffffffa7d23440 R08: 0000000000000000 R09: fffffbfff4b7d83c
[   32.225479][   T11] R10: ffffffffa5bec1e7 R11: ffff888001a82300 R12: 0000000000000000
[   32.225807][   T11] R13: ffff88800265a128 R14: ffff88800265a008 R15: ffff88800265a000
[   32.226134][   T11] FS:  0000000000000000(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   32.226492][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.226757][   T11] CR2: 00007f29984bf258 CR3: 000000001cf28004 CR4: 0000000000772ef0
[   32.227076][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   32.227389][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   32.227691][   T11] PKRU: 55555554
[   32.227853][   T11] Call Trace:
[   32.228026][   T11]  <TASK>
[ 32.228145][ T11] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 32.228359][ T11] ? __warn (kernel/panic.c:748) 
[ 32.228527][ T11] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 32.228743][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 32.228960][ T11] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 32.229141][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 32.229354][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 32.229588][ T11] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 32.229838][ T11] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 32.230123][ 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) 
[ 32.230348][ T11] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 32.230571][ T11] register_netdevice (net/core/dev.c:11003) 
[ 32.230800][ T11] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 32.231046][ T11] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 32.231283][ T11] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 32.231564][ T11] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 32.231852][ T11] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 32.232150][ T11] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 32.232457][ T11] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 32.232741][ T11] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 32.233034][ T11] devlink_reload (net/devlink/dev.c:474) 
[ 32.233271][ T11] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 32.233500][ T11] ? devlinks_xa_find_get (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/devlink/core.c:343) 
[ 32.233730][ T11] devlink_pernet_pre_exit (net/devlink/core.c:288 net/devlink/devl_internal.h:114 net/devlink/core.c:513) 
[ 32.233954][ T11] ? __pfx_devlink_pernet_pre_exit (net/devlink/core.c:496) 
[ 32.234248][ T11] cleanup_net (net/core/net_namespace.c:162 net/core/net_namespace.c:632) 
[ 32.234471][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 32.234688][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:594) 
[ 32.234901][ T11] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 32.235140][ T11] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 32.235355][ T11] ? process_one_work (kernel/workqueue.c:3214) 
[ 32.235585][ T11] process_one_work (kernel/workqueue.c:3238) 
[ 32.235811][ T11] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 32.236048][ T11] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 32.236277][ T11] ? assign_work (kernel/workqueue.c:1200) 
[ 32.236503][ T11] worker_thread (kernel/workqueue.c:3313 kernel/workqueue.c:3400) 
[ 32.236722][ T11] ? __pfx_worker_thread (kernel/workqueue.c:3346) 
[ 32.236949][ T11] kthread (kernel/kthread.c:464) 
[ 32.237133][ T11] ? __pfx_kthread (kernel/kthread.c:413) 
[ 32.237363][ T11] ? __pfx_kthread (kernel/kthread.c:413) 
[ 32.237587][ T11] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 32.237804][ 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