======================================
| 0
| xx__-> [    9.895335][  T227] ------------[ cut here ]------------
| [ 9.895777][ 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) 
| [    9.896316][  T227] Modules linked in: netdevsim
[    9.896939][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.897224][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.897508][ 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
[    9.898261][  T227] RSP: 0018:ffffc90000af7520 EFLAGS: 00010246
[    9.898544][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.898877][  T227] RDX: 0000000000000000 RSI: ffff888009502c98 RDI: ffff8880062a50f8
[    9.899220][  T227] RBP: ffffffffbb923440 R08: 0000000000000000 R09: fffffbfff72fd83c
[    9.899587][  T227] R10: ffffffffb97ec1e7 R11: ffff8880062a45c0 R12: 0000000000000000
[    9.899926][  T227] R13: ffff888009502128 R14: ffff888009502008 R15: ffff888009502000
[    9.900286][  T227] FS:  00007eff7dc7c740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.900679][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.900982][  T227] CR2: 00007f7afe182000 CR3: 0000000002454004 CR4: 0000000000772ef0
[    9.901348][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.901693][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.902043][  T227] PKRU: 55555554
[    9.902247][  T227] Call Trace:
[    9.902423][  T227]  <TASK>
[ 9.902580][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.902827][ T227] ? __warn (kernel/panic.c:748) 
[ 9.903005][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.903263][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.903506][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.903690][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.903917][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.904177][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.904429][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.904725][ 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) 
[ 9.904964][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.905218][ T227] register_netdevice (net/core/dev.c:11003) 
[ 9.905463][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 9.905700][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.905952][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.906268][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.906464][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.906753][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.907037][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.907335][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.907573][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.907847][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.908085][ 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)) 
[ 9.908259][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.908491][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.908718][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.908941][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 9.909171][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.909397][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.909689][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.909915][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.910152][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.910386][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.910607][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.910852][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 9.911095][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.911318][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.911567][ 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) 
[ 9.911794][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 9.912045][ T227] device_add (drivers/base/core.c:3672) 
[ 9.912289][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.912515][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.912766][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.913053][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.913351][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.913573][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.913811][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.914044][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.914283][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.914491][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.914720][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.914956][ 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) 
[ 9.915203][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.915437][ T227] ksys_write (fs/read_write.c:731) 
[ 9.915613][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.915845][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.916097][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.916325][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.916616][  T227] RIP: 0033:0x7eff7ddbdb77
[ 9.916846][ 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
[    9.917610][  T227] RSP: 002b:00007ffea93e20e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.917942][  T227] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007eff7ddbdb77
[    9.918296][  T227] RDX: 0000000000000007 RSI: 000056310b61fb50 RDI: 0000000000000001
[    9.918623][  T227] RBP: 000056310b61fb50 R08: 0000000000000003 R09: 0000000000000000
[    9.918976][  T227] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000007
[    9.919309][  T227] R13: 00007eff7de79760 R14: 0000000000000007 R15: 00007eff7de749c0
| [    9.989940][  T227] ------------[ cut here ]------------
| [ 9.990329][ 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) 
| [    9.990913][  T227] Modules linked in: netdevsim
| [    9.991624][  T227] Tainted: [W]=WARN
[    9.991825][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.992319][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.992619][ 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
[    9.993387][  T227] RSP: 0018:ffffc90000af7520 EFLAGS: 00010246
[    9.993678][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.994057][  T227] RDX: 0000000000000000 RSI: ffff88800a24ac98 RDI: ffff8880062a50f8
[    9.994385][  T227] RBP: ffffffffbb923440 R08: 0000000000000000 R09: fffffbfff72fd83c
[    9.994699][  T227] R10: ffffffffb97ec1e7 R11: ffff8880062a45c0 R12: 0000000000000000
[    9.995031][  T227] R13: ffff88800a24a128 R14: ffff88800a24a008 R15: ffff88800a24a000
[    9.995372][  T227] FS:  00007eff7dc7c740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.995750][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.996017][  T227] CR2: 000056310b4a8288 CR3: 0000000002454004 CR4: 0000000000772ef0
[    9.996383][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.996702][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.997025][  T227] PKRU: 55555554
[    9.997230][  T227] Call Trace:
[    9.997399][  T227]  <TASK>
[ 9.997517][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.997758][ T227] ? __warn (kernel/panic.c:748) 
[ 9.997935][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.998171][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.998397][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.998565][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.998781][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.999009][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 9.999248][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 9.999518][ 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) 
[ 9.999742][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.999966][ T227] register_netdevice (net/core/dev.c:11003) 
[ 10.000201][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.000429][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.000662][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.000945][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 10.001130][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.001415][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.001692][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 10.001967][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 10.002210][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 10.002482][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 10.002705][ 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)) 
[ 10.002879][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 10.003117][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 10.003341][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 10.003562][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 10.003779][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 10.003998][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 10.004274][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 10.004495][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 10.004712][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.004950][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.005181][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 10.005403][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 10.005625][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 10.005870][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.006107][ 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) 
[ 10.006334][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 10.006557][ T227] device_add (drivers/base/core.c:3672) 
[ 10.006778][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 10.006993][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 10.007233][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 10.007539][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 10.007844][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.008064][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.008320][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.008540][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.008790][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.008967][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.009230][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 10.009446][ 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) 
[ 10.009680][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 10.009916][ T227] ksys_write (fs/read_write.c:731) 
[ 10.010099][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.010346][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.010578][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.010822][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.011099][  T227] RIP: 0033:0x7eff7ddbdb77
[ 10.011333][ T227] Code: Unable to access opcode bytes at 0x7eff7ddbdb4d.

Code starting with the faulting instruction
===========================================
[   10.011624][  T227] RSP: 002b:00007ffea93e2218 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.011941][  T227] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007eff7ddbdb77
[   10.012280][  T227] RDX: 0000000000000007 RSI: 000056310b61fb50 RDI: 0000000000000001
[   10.012606][  T227] RBP: 000056310b61fb50 R08: 0000000000000000 R09: 00007eff7de304e0
[   10.012953][  T227] R10: 00007eff7de303e0 R11: 0000000000000246 R12: 0000000000000007
[   10.013293][  T227] R13: 00007eff7de79760 R14: 0000000000000007 R15: 00007eff7de749c0
| [   10.092704][  T227] ------------[ cut here ]------------
| [ 10.093069][ 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) 
| [   10.093574][  T227] Modules linked in: netdevsim
| [   10.094201][  T227] Tainted: [W]=WARN
[   10.094357][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.094612][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.094890][ 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
[   10.095725][  T227] RSP: 0000:ffffc90000af7520 EFLAGS: 00010246
[   10.095983][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.096393][  T227] RDX: 0000000000000000 RSI: ffff888002a1ac98 RDI: ffff8880062a50f8
[   10.096698][  T227] RBP: ffffffffbb923440 R08: 0000000000000000 R09: fffffbfff72fd83c
[   10.096999][  T227] R10: ffffffffb97ec1e7 R11: ffff8880062a45c0 R12: 0000000000000000
[   10.097392][  T227] R13: ffff888002a1a128 R14: ffff888002a1a008 R15: ffff888002a1a000
[   10.097693][  T227] FS:  00007eff7dc7c740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   10.098043][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.098390][  T227] CR2: 00007fd9af5fbaba CR3: 0000000002454004 CR4: 0000000000772ef0
[   10.098690][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.098985][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.099379][  T227] PKRU: 55555554
[   10.099533][  T227] Call Trace:
[   10.099683][  T227]  <TASK>
[ 10.099788][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.099991][ T227] ? __warn (kernel/panic.c:748) 
[ 10.100244][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.100452][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.100663][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.100837][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.101043][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.101312][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.101526][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.101786][ 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) 
[ 10.101996][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.102214][ T227] register_netdevice (net/core/dev.c:11003) 
[ 10.102432][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.102646][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.102864][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.103140][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 10.103298][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.103566][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.103832][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 10.104109][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 10.104327][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 10.104583][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 10.104800][ 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)) 
[ 10.104956][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 10.105179][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 10.105393][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 10.105600][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 10.105802][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 10.106010][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 10.106273][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 10.106481][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 10.106683][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.106892][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.107109][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 10.107322][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 10.107524][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 10.107727][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.107934][ 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) 
[ 10.108159][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 10.108372][ T227] device_add (drivers/base/core.c:3672) 
[ 10.108585][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 10.108787][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 10.109006][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 10.109282][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 10.109549][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.109753][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.109968][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.110183][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.110396][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.110560][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.110777][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 10.110981][ 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) 
[ 10.111205][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 10.111423][ T227] ksys_write (fs/read_write.c:731) 
[ 10.111581][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.111783][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.111998][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.112217][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.112472][  T227] RIP: 0033:0x7eff7ddbdb77
[ 10.112686][ T227] Code: Unable to access opcode bytes at 0x7eff7ddbdb4d.

Code starting with the faulting instruction
===========================================
[   10.112946][  T227] RSP: 002b:00007ffea93e2348 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.113273][  T227] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007eff7ddbdb77
[   10.113578][  T227] RDX: 0000000000000007 RSI: 000056310b61fb50 RDI: 0000000000000001
[   10.113881][  T227] RBP: 000056310b61fb50 R08: 0000000000000000 R09: 00007eff7de304e0
[   10.114196][  T227] R10: 00007eff7de303e0 R11: 0000000000000246 R12: 0000000000000007
[   10.114509][  T227] R13: 00007eff7de79760 R14: 0000000000000007 R15: 00007eff7de749c0
| [   10.518460][  T270] ------------[ cut here ]------------
| [ 10.518858][ T270] WARNING: CPU: 3 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) 
| [   10.519674][  T270] Modules linked in: netdevsim
| [   10.520242][  T270] Tainted: [W]=WARN
[   10.520399][  T270] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.520636][ T270] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.520897][ 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
[   10.521593][  T270] RSP: 0018:ffffc900005771e8 EFLAGS: 00010246
[   10.521850][  T270] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.522152][  T270] RDX: 0000000000000000 RSI: ffff8880060d2c98 RDI: ffff888004dcadc0
[   10.522442][  T270] RBP: ffff888009710040 R08: 0000000000000000 R09: fffffbfff72fd83c
[   10.522733][  T270] R10: ffffffffb97ec1e7 R11: ffff888004dca300 R12: 0000000000000000
[   10.523021][  T270] R13: ffff8880060d2128 R14: ffff8880060d2008 R15: ffff8880060d2000
[   10.523331][  T270] FS:  00007f507ea0b800(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   10.523667][  T270] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.523913][  T270] CR2: 00007f507eb4a440 CR3: 00000000052ea006 CR4: 0000000000772ef0
[   10.524217][  T270] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.524514][  T270] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.524803][  T270] PKRU: 55555554
[   10.524952][  T270] Call Trace:
[   10.525106][  T270]  <TASK>
[ 10.525209][ T270] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.525407][ T270] ? __warn (kernel/panic.c:748) 
[ 10.525561][ T270] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.525756][ T270] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.525961][ T270] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.526136][ T270] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.526335][ T270] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.526556][ T270] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.526755][ T270] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 10.526962][ T270] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.527236][ 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) 
[ 10.527439][ T270] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.527636][ T270] register_netdevice (net/core/dev.c:11003) 
[ 10.527850][ T270] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.528055][ T270] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.528280][ T270] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.528539][ T270] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.528803][ T270] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 10.529085][ T270] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 10.529337][ T270] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 10.529587][ T270] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 10.529850][ T270] devlink_reload (net/devlink/dev.c:474) 
[ 10.530054][ T270] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 10.530262][ T270] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 10.530458][ T270] ? cap_capable (security/commoncap.c:131) 
[ 10.530646][ 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) 
[ 10.530828][ T270] devlink_nl_reload_doit (net/devlink/dev.c:584) 
[ 10.531021][ T270] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 10.531279][ T270] ? __nla_parse (lib/nlattr.c:732) 
[ 10.531479][ T270] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1115) 
[ 10.531672][ T270] ? __pfx_genl_family_rcv_msg_doit (net/netlink/genetlink.c:1088) 
[ 10.531940][ T270] ? cap_capable (security/commoncap.c:131) 
[ 10.532145][ T270] ? validate_chain (kernel/locking/lockdep.c:3799 kernel/locking/lockdep.c:3819 kernel/locking/lockdep.c:3874) 
[ 10.532357][ T270] genl_family_rcv_msg (net/netlink/genetlink.c:1195) 
[ 10.532560][ T270] ? __pfx_genl_family_rcv_msg (net/netlink/genetlink.c:1160) 
[ 10.532762][ T270] ? __pfx_devlink_nl_pre_doit_dev_lock (net/devlink/netlink.c:257) 
[ 10.533002][ T270] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 10.533253][ T270] ? __pfx_devlink_nl_post_doit_dev_lock (net/devlink/netlink.c:288) 
[ 10.533508][ T270] genl_rcv_msg (net/netlink/genetlink.c:65 net/netlink/genetlink.c:1211) 
[ 10.533705][ T270] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 10.533901][ T270] ? __pfx_genl_rcv_msg (net/netlink/genetlink.c:1201) 
[ 10.534107][ T270] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 10.534321][ T270] ? genl_rcv (net/netlink/genetlink.c:1219) 
[ 10.534470][ T270] ? __pfx_down_read (kernel/locking/rwsem.c:1522) 
[ 10.534669][ T270] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 10.534875][ T270] genl_rcv (net/netlink/genetlink.c:1220) 
[ 10.535033][ T270] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 10.535240][ T270] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 10.535435][ T270] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 10.535635][ T270] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 10.535835][ T270] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 10.536028][ T270] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 10.536233][ T270] ? __might_fault (mm/memory.c:6851 mm/memory.c:6844) 
[ 10.536438][ T270] __sys_sendto (net/socket.c:709 net/socket.c:724 net/socket.c:2178) 
[ 10.536631][ T270] ? __pfx___sys_sendto (net/socket.c:2145) 
[ 10.536822][ T270] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.537017][ T270] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 10.537232][ T270] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 10.537434][ T270] ? __rseq_handle_notify_resume (kernel/rseq.c:420) 
[ 10.537698][ T270] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 10.537890][ T270] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:403) 
[ 10.538146][ T270] ? __pfx___x64_sys_openat (fs/open.c:1454) 
[ 10.538345][ T270] __x64_sys_sendto (net/socket.c:2181) 
[ 10.538538][ T270] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.538778][ T270] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.538973][ T270] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.539228][  T270] RIP: 0033:0x7f507ec17a4a
[ 10.539427][ 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
[   10.540098][  T270] RSP: 002b:00007fff75852f98 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   10.540387][  T270] RAX: ffffffffffffffda RBX: 0000000025bdab00 RCX: 00007f507ec17a4a
[   10.540702][  T270] RDX: 0000000000000040 RSI: 0000000025bdab00 RDI: 0000000000000005
[   10.541000][  T270] RBP: 0000000025bda910 R08: 00007f507edbb200 R09: 000000000000000c
[   10.541299][  T270] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000040f200
[   10.541589][  T270] R13: 0000000025bda910 R14: 0000000000000000 R15: 0000000000000001
| [   10.771528][  T275] ------------[ cut here ]------------
| [ 10.771953][ 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) 
| [   10.772410][  T275] Modules linked in: netdevsim
| [   10.773184][  T275] Tainted: [W]=WARN
[   10.773355][  T275] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.773635][ T275] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.773924][ 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
[   10.775029][  T275] RSP: 0018:ffffc90000b071e8 EFLAGS: 00010246
[   10.775467][  T275] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.775948][  T275] RDX: 0000000000000000 RSI: ffff88800a61ac98 RDI: ffff88800a5f5080
[   10.776488][  T275] RBP: ffff888009710040 R08: 0000000000000000 R09: fffffbfff72fd83c
[   10.776984][  T275] R10: ffffffffb97ec1e7 R11: ffff88800a5f45c0 R12: 0000000000000000
[   10.777473][  T275] R13: ffff88800a61a128 R14: ffff88800a61a008 R15: ffff88800a61a000
[   10.777964][  T275] FS:  00007f1e6ba6a800(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   10.778563][  T275] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.778987][  T275] CR2: 00007f1e6bba9440 CR3: 00000000052ea001 CR4: 0000000000772ef0
[   10.779510][  T275] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.780009][  T275] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.780546][  T275] PKRU: 55555554
[   10.780813][  T275] Call Trace:
[   10.781092][  T275]  <TASK>
[ 10.781264][ T275] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.781600][ T275] ? __warn (kernel/panic.c:748) 
[ 10.781859][ T275] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.782225][ T275] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.782573][ T275] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.782829][ T275] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.783181][ T275] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.783541][ T275] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.783881][ T275] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 10.784266][ T275] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.784690][ 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) 
[ 10.785043][ T275] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.785398][ T275] register_netdevice (net/core/dev.c:11003) 
[ 10.785748][ T275] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.786124][ T275] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.786489][ T275] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.786928][ T275] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.787409][ T275] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 10.787852][ T275] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 10.788329][ T275] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 10.788758][ T275] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 10.789222][ T275] devlink_reload (net/devlink/dev.c:474) 
[ 10.789577][ T275] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 10.789914][ T275] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 10.790286][ T275] ? cap_capable (security/commoncap.c:131) 
[ 10.790620][ 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) 
[ 10.790907][ T275] devlink_nl_reload_doit (net/devlink/dev.c:584) 
[ 10.791273][ T275] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 10.791693][ T275] ? __nla_parse (lib/nlattr.c:732) 
[ 10.792054][ T275] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1115) 
[ 10.792440][ T275] ? __pfx_genl_family_rcv_msg_doit (net/netlink/genetlink.c:1088) 
[ 10.792883][ T275] ? cap_capable (security/commoncap.c:131) 
[ 10.793228][ T275] ? validate_chain (kernel/locking/lockdep.c:3799 kernel/locking/lockdep.c:3819 kernel/locking/lockdep.c:3874) 
[ 10.793459][ T275] genl_family_rcv_msg (net/netlink/genetlink.c:1195) 
[ 10.793670][ T275] ? __pfx_genl_family_rcv_msg (net/netlink/genetlink.c:1160) 
[ 10.793874][ T275] ? __pfx_devlink_nl_pre_doit_dev_lock (net/devlink/netlink.c:257) 
[ 10.794147][ T275] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 10.794414][ T275] ? __pfx_devlink_nl_post_doit_dev_lock (net/devlink/netlink.c:288) 
[ 10.794676][ T275] genl_rcv_msg (net/netlink/genetlink.c:65 net/netlink/genetlink.c:1211) 
[ 10.794880][ T275] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 10.795095][ T275] ? __pfx_genl_rcv_msg (net/netlink/genetlink.c:1201) 
[ 10.795314][ T275] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 10.795534][ T275] ? genl_rcv (net/netlink/genetlink.c:1219) 
[ 10.795695][ T275] ? __pfx_down_read (kernel/locking/rwsem.c:1522) 
[ 10.795901][ T275] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 10.796143][ T275] genl_rcv (net/netlink/genetlink.c:1220) 
[ 10.796312][ T275] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 10.796521][ T275] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 10.796726][ T275] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 10.796936][ T275] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 10.797157][ T275] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 10.797373][ T275] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 10.797579][ T275] ? __might_fault (mm/memory.c:6851 mm/memory.c:6844) 
[ 10.797792][ T275] __sys_sendto (net/socket.c:709 net/socket.c:724 net/socket.c:2178) 
[ 10.797998][ T275] ? __pfx___sys_sendto (net/socket.c:2145) 
[ 10.798214][ T275] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.798423][ T275] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 10.798638][ T275] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 10.798851][ T275] ? __rseq_handle_notify_resume (kernel/rseq.c:420) 
[ 10.799116][ T275] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 10.799332][ T275] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:403) 
[ 10.799592][ T275] ? __pfx___x64_sys_openat (fs/open.c:1454) 
[ 10.799811][ T275] __x64_sys_sendto (net/socket.c:2181) 
[ 10.800015][ T275] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.800355][ T275] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.800717][ T275] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.801157][  T275] RIP: 0033:0x7f1e6bc76a4a
[ 10.801508][ 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
[   10.802609][  T275] RSP: 002b:00007ffe3fbbf6c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   10.802926][  T275] RAX: ffffffffffffffda RBX: 000000001bf71b00 RCX: 00007f1e6bc76a4a
[   10.803236][  T275] RDX: 0000000000000040 RSI: 000000001bf71b00 RDI: 0000000000000005
[   10.803549][  T275] RBP: 000000001bf71910 R08: 00007f1e6be1a200 R09: 000000000000000c
[   10.803847][  T275] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000040f200
[   10.804185][  T275] R13: 000000001bf71910 R14: 0000000000000000 R15: 0000000000000001
| [   10.982205][  T280] ------------[ cut here ]------------
| [ 10.982553][ 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) 
| [   10.982964][  T280] Modules linked in: netdevsim
| [   10.983719][  T280] Tainted: [W]=WARN
[   10.983876][  T280] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.984163][ T280] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.984427][ 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
[   10.985183][  T280] RSP: 0018:ffffc900005a71e8 EFLAGS: 00010246
[   10.985445][  T280] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.985755][  T280] RDX: 0000000000000000 RSI: ffff88800bb92c98 RDI: ffff88800bb9adc0
[   10.986057][  T280] RBP: ffff888009710040 R08: 0000000000000000 R09: fffffbfff72fd83c
[   10.986402][  T280] R10: ffffffffb97ec1e7 R11: ffff88800bb9a300 R12: 0000000000000000
[   10.986705][  T280] R13: ffff88800bb92128 R14: ffff88800bb92008 R15: ffff88800bb92000
[   10.987009][  T280] FS:  00007febb16fd800(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   10.987686][  T280] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.987947][  T280] CR2: 00007febb183c440 CR3: 000000000245e004 CR4: 0000000000772ef0
[   10.988261][  T280] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.988562][  T280] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.988864][  T280] PKRU: 55555554
[   10.989031][  T280] Call Trace:
[   10.989197][  T280]  <TASK>
[ 10.989309][ T280] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.989515][ T280] ? __warn (kernel/panic.c:748) 
[ 10.989672][ T280] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.989884][ T280] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.990108][ T280] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.990268][ T280] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.990472][ T280] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.990687][ T280] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.990909][ T280] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 10.991137][ T280] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.991399][ 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) 
[ 10.991608][ T280] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.991818][ T280] register_netdevice (net/core/dev.c:11003) 
[ 10.992040][ T280] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.992265][ T280] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.992490][ T280] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.992758][ T280] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.993026][ T280] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 10.993305][ T280] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 10.993570][ T280] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 10.993848][ T280] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 10.994129][ T280] devlink_reload (net/devlink/dev.c:474) 
[ 10.994342][ T280] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 10.994545][ T280] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 10.994755][ T280] ? cap_capable (security/commoncap.c:131) 
[ 10.994958][ 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) 
[ 10.995142][ T280] devlink_nl_reload_doit (net/devlink/dev.c:584) 
[ 10.995349][ T280] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 10.995603][ T280] ? __nla_parse (lib/nlattr.c:732) 
[ 10.995816][ T280] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1115) 
[ 10.996025][ T280] ? __pfx_genl_family_rcv_msg_doit (net/netlink/genetlink.c:1088) 
[ 10.996302][ T280] ? cap_capable (security/commoncap.c:131) 
[ 10.996507][ T280] ? validate_chain (kernel/locking/lockdep.c:3799 kernel/locking/lockdep.c:3819 kernel/locking/lockdep.c:3874) 
[ 10.996725][ T280] genl_family_rcv_msg (net/netlink/genetlink.c:1195) 
[ 10.996933][ T280] ? __pfx_genl_family_rcv_msg (net/netlink/genetlink.c:1160) 
[ 10.997151][ T280] ? __pfx_devlink_nl_pre_doit_dev_lock (net/devlink/netlink.c:257) 
[ 10.997404][ T280] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 10.997653][ T280] ? __pfx_devlink_nl_post_doit_dev_lock (net/devlink/netlink.c:288) 
[ 10.997919][ T280] genl_rcv_msg (net/netlink/genetlink.c:65 net/netlink/genetlink.c:1211) 
[ 10.998143][ T280] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 10.998346][ T280] ? __pfx_genl_rcv_msg (net/netlink/genetlink.c:1201) 
[ 10.998556][ T280] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 10.998770][ T280] ? genl_rcv (net/netlink/genetlink.c:1219) 
[ 10.998925][ T280] ? __pfx_down_read (kernel/locking/rwsem.c:1522) 
[ 10.999145][ T280] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 10.999357][ T280] genl_rcv (net/netlink/genetlink.c:1220) 
[ 10.999511][ T280] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 10.999721][ T280] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 10.999925][ T280] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 11.000150][ T280] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 11.000360][ T280] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 11.000561][ T280] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 11.000789][ T280] ? __might_fault (mm/memory.c:6851 mm/memory.c:6844) 
[ 11.001005][ T280] __sys_sendto (net/socket.c:709 net/socket.c:724 net/socket.c:2178) 
[ 11.001224][ T280] ? __pfx___sys_sendto (net/socket.c:2145) 
[ 11.001427][ T280] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 11.001641][ T280] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 11.001856][ T280] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 11.002065][ T280] ? __rseq_handle_notify_resume (kernel/rseq.c:420) 
[ 11.002333][ T280] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 11.002537][ T280] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:403) 
[ 11.002805][ T280] ? __pfx___x64_sys_openat (fs/open.c:1454) 
[ 11.003015][ T280] __x64_sys_sendto (net/socket.c:2181) 
[ 11.003229][ T280] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 11.003491][ T280] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 11.003701][ T280] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   11.003948][  T280] RIP: 0033:0x7febb1909a4a
[ 11.004173][ 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
[   11.004878][  T280] RSP: 002b:00007ffc5cdd02f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   11.005209][  T280] RAX: ffffffffffffffda RBX: 000000001b1f7b00 RCX: 00007febb1909a4a
[   11.005520][  T280] RDX: 0000000000000040 RSI: 000000001b1f7b00 RDI: 0000000000000005
[   11.005825][  T280] RBP: 000000001b1f7910 R08: 00007febb1aad200 R09: 000000000000000c
[   11.006149][  T280] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000040f200
[   11.006463][  T280] R13: 000000001b1f7910 R14: 0000000000000000 R15: 0000000000000001
| [   32.089393][   T11] ------------[ cut here ]------------
| [ 32.089697][ 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) 
| [   32.090051][   T11] Modules linked in: netdevsim
| [   32.090632][   T11] Tainted: [W]=WARN
[   32.090769][   T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.090988][   T11] Workqueue: netns cleanup_net
[ 32.091208][ T11] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 32.091438][ 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
[   32.092046][   T11] RSP: 0018:ffffc900000b7620 EFLAGS: 00010246
[   32.092301][   T11] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   32.092565][   T11] RDX: 0000000000000000 RSI: ffff88800a03ac98 RDI: ffff888001a82e10
[   32.092830][   T11] RBP: ffffffffbb923440 R08: 0000000000000000 R09: fffffbfff72fd83c
[   32.093104][   T11] R10: ffffffffb97ec1e7 R11: ffff888001a82300 R12: 0000000000000000
[   32.093364][   T11] R13: ffff88800a03a128 R14: ffff88800a03a008 R15: ffff88800a03a000
[   32.093627][   T11] FS:  0000000000000000(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   32.093932][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.094168][   T11] CR2: 00000000004e5e50 CR3: 000000002a928005 CR4: 0000000000772ef0
[   32.094570][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   32.094825][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   32.095094][   T11] PKRU: 55555554
[   32.095232][   T11] Call Trace:
[   32.095363][   T11]  <TASK>
[ 32.095454][ T11] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 32.095627][ T11] ? __warn (kernel/panic.c:748) 
[ 32.095765][ T11] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 32.095942][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 32.096136][ T11] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 32.096270][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 32.096440][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 32.096630][ T11] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 32.096813][ T11] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 32.097032][ 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) 
[ 32.097225][ T11] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 32.097415][ T11] register_netdevice (net/core/dev.c:11003) 
[ 32.097601][ T11] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 32.097789][ T11] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 32.097984][ T11] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 32.098238][ T11] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 32.098474][ T11] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 32.098712][ T11] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 32.098944][ T11] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 32.099185][ T11] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 32.099426][ T11] devlink_reload (net/devlink/dev.c:474) 
[ 32.099618][ T11] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 32.099798][ T11] ? devlinks_xa_find_get (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/devlink/core.c:343) 
[ 32.099991][ T11] devlink_pernet_pre_exit (net/devlink/core.c:288 net/devlink/devl_internal.h:114 net/devlink/core.c:513) 
[ 32.100180][ T11] ? __pfx_devlink_pernet_pre_exit (net/devlink/core.c:496) 
[ 32.100415][ T11] cleanup_net (net/core/net_namespace.c:162 net/core/net_namespace.c:632) 
[ 32.100606][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 32.100792][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:594) 
[ 32.100974][ T11] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 32.101171][ T11] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 32.101346][ T11] ? process_one_work (kernel/workqueue.c:3214) 
[ 32.101534][ T11] process_one_work (kernel/workqueue.c:3238) 
[ 32.101730][ T11] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 32.101910][ T11] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 32.102111][ T11] ? assign_work (kernel/workqueue.c:1200) 
[ 32.102295][ T11] worker_thread (kernel/workqueue.c:3313 kernel/workqueue.c:3400) 
[ 32.102485][ T11] ? __pfx_worker_thread (kernel/workqueue.c:3346) 
[ 32.102670][ T11] kthread (kernel/kthread.c:464) 
[ 32.102807][ T11] ? __pfx_kthread (kernel/kthread.c:413) 
[ 32.102990][ T11] ? __pfx_kthread (kernel/kthread.c:413) 
[ 32.103188][ T11] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 32.103378][ T11] ? __pfx_kthread (kernel/kthread.c:413) 
[ 32.103552][ T11] ret_from_fork_asm (arch/x86/entry/entry_64.S:257) 
| [   32.162333][   T11] ------------[ cut here ]------------
| [ 32.162640][ T11] WARNING: CPU: 3 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) 
| [   32.163025][   T11] Modules linked in: netdevsim
| [   32.163701][   T11] Tainted: [W]=WARN
[   32.163846][   T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.164155][   T11] Workqueue: netns cleanup_net
[ 32.164348][ T11] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 32.164597][ 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
[   32.165325][   T11] RSP: 0018:ffffc900000b7620 EFLAGS: 00010246
[   32.165560][   T11] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   32.165829][   T11] RDX: 0000000000000000 RSI: ffff88800a24ac98 RDI: ffff888001a82e10
[   32.166294][   T11] RBP: ffffffffbb923440 R08: 0000000000000000 R09: fffffbfff72fd83c
[   32.166594][   T11] R10: ffffffffb97ec1e7 R11: ffff888001a82300 R12: 0000000000000000
[   32.166869][   T11] R13: ffff88800a24a128 R14: ffff88800a24a008 R15: ffff88800a24a000
[   32.167215][   T11] FS:  0000000000000000(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   32.167533][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.167773][   T11] CR2: 00007f7ae4ee0000 CR3: 000000002a928005 CR4: 0000000000772ef0
[   32.168043][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   32.168391][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   32.168662][   T11] PKRU: 55555554
[   32.168799][   T11] Call Trace:
[   32.168938][   T11]  <TASK>
[ 32.169035][ T11] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 32.169238][ T11] ? __warn (kernel/panic.c:748) 
[ 32.169384][ T11] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 32.169570][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 32.169860][ T11] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 32.170002][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 32.170193][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 32.170394][ T11] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 32.170591][ T11] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 32.170832][ 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) 
[ 32.171023][ T11] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 32.171227][ T11] register_netdevice (net/core/dev.c:11003) 
[ 32.171418][ T11] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 32.171612][ T11] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 32.171818][ T11] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 32.172063][ T11] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 32.172323][ T11] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 32.172567][ T11] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 32.172817][ T11] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 32.173058][ T11] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 32.173323][ T11] devlink_reload (net/devlink/dev.c:474) 
[ 32.173529][ T11] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 32.173724][ T11] ? devlinks_xa_find_get (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/devlink/core.c:343) 
[ 32.173929][ T11] devlink_pernet_pre_exit (net/devlink/core.c:288 net/devlink/devl_internal.h:114 net/devlink/core.c:513) 
[ 32.174356][ T11] ? __pfx_devlink_pernet_pre_exit (net/devlink/core.c:496) 
[ 32.174609][ T11] cleanup_net (net/core/net_namespace.c:162 net/core/net_namespace.c:632) 
[ 32.174807][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 32.175109][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:594) 
[ 32.175303][ T11] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 32.175503][ T11] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 32.175690][ T11] ? process_one_work (kernel/workqueue.c:3214) 
[ 32.176068][ T11] process_one_work (kernel/workqueue.c:3238) 
[ 32.176288][ T11] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 32.176476][ T11] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 32.176678][ T11] ? assign_work (kernel/workqueue.c:1200) 
[ 32.176967][ T11] worker_thread (kernel/workqueue.c:3313 kernel/workqueue.c:3400) 
[ 32.177197][ T11] ? __pfx_worker_thread (kernel/workqueue.c:3346) 
[ 32.177388][ T11] kthread (kernel/kthread.c:464) 
[ 32.177534][ T11] ? __pfx_kthread (kernel/kthread.c:413) 
[ 32.177722][ T11] ? __pfx_kthread (kernel/kthread.c:413) 
[ 32.177995][ T11] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 32.178189][ 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