======================================
| 0
| xx__-> [   10.037827][  T227] ------------[ cut here ]------------
| [ 10.038225][ T227] WARNING: CPU: 3 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   10.038699][  T227] Modules linked in: netdevsim
[   10.039403][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.039678][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.039963][ 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
[   10.040752][  T227] RSP: 0018:ffffc90000b47520 EFLAGS: 00010246
[   10.041037][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.041380][  T227] RDX: 0000000000000000 RSI: ffff88800a7a2c98 RDI: ffff888009ea50f8
[   10.041714][  T227] RBP: ffffffff95923440 R08: 0000000000000000 R09: fffffbfff26fd83c
[   10.042046][  T227] R10: ffffffff937ec1e7 R11: ffff888009ea45c0 R12: 0000000000000000
[   10.042386][  T227] R13: ffff88800a7a2128 R14: ffff88800a7a2008 R15: ffff88800a7a2000
[   10.042721][  T227] FS:  00007f8de23e2740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   10.043109][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.043409][  T227] CR2: 000056128caeeb58 CR3: 00000000029b0006 CR4: 0000000000772ef0
[   10.043743][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.044102][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.044449][  T227] PKRU: 55555554
[   10.044619][  T227] Call Trace:
[   10.044789][  T227]  <TASK>
[ 10.044906][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.045145][ T227] ? __warn (kernel/panic.c:748) 
[ 10.045322][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.045547][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.045776][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.045947][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.046177][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.046414][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.046644][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.046922][ 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) 
[ 10.047158][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.047412][ T227] register_netdevice (net/core/dev.c:11003) 
[ 10.047649][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.047890][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.048143][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.048425][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 10.048602][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.048893][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.049188][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 10.049474][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 10.049707][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 10.049990][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 10.050224][ 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)) 
[ 10.050392][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 10.050626][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 10.050853][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 10.051084][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 10.051316][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 10.051545][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 10.051829][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 10.052054][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 10.052279][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.052504][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.052732][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 10.052962][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 10.053195][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 10.053420][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.053642][ 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) 
[ 10.053870][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 10.054092][ T227] device_add (drivers/base/core.c:3672) 
[ 10.054336][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 10.054555][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 10.054787][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 10.055072][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 10.055372][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.055593][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.055819][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.056042][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.056280][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.056457][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.056682][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 10.056899][ 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) 
[ 10.057140][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 10.057370][ T227] ksys_write (fs/read_write.c:731) 
[ 10.057543][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.057763][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.057993][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.058229][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.058511][  T227] RIP: 0033:0x7f8de2523b77
[ 10.058746][ 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
[   10.059524][  T227] RSP: 002b:00007ffefe4aba88 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.059856][  T227] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f8de2523b77
[   10.060198][  T227] RDX: 0000000000000007 RSI: 000056128caedb50 RDI: 0000000000000001
[   10.060532][  T227] RBP: 000056128caedb50 R08: 0000000000000003 R09: 0000000000000000
[   10.060870][  T227] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000007
[   10.061210][  T227] R13: 00007f8de25df760 R14: 0000000000000007 R15: 00007f8de25da9c0
| [   10.122066][  T227] ------------[ cut here ]------------
| [ 10.122472][ T227] WARNING: CPU: 3 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   10.122923][  T227] Modules linked in: netdevsim
| [   10.123689][  T227] Tainted: [W]=WARN
[   10.123873][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.124171][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.124453][ 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
[   10.125215][  T227] RSP: 0018:ffffc90000b47520 EFLAGS: 00010246
[   10.125490][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.125816][  T227] RDX: 0000000000000000 RSI: ffff88800891ac98 RDI: ffff888009ea50f8
[   10.126148][  T227] RBP: ffffffff95923440 R08: 0000000000000000 R09: fffffbfff26fd83c
[   10.126466][  T227] R10: ffffffff937ec1e7 R11: ffff888009ea45c0 R12: 0000000000000000
[   10.126784][  T227] R13: ffff88800891a128 R14: ffff88800891a008 R15: ffff88800891a000
[   10.127111][  T227] FS:  00007f8de23e2740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   10.127502][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.127775][  T227] CR2: 000056128c976288 CR3: 00000000029b0006 CR4: 0000000000772ef0
[   10.128104][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.128445][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.128778][  T227] PKRU: 55555554
[   10.128943][  T227] Call Trace:
[   10.129109][  T227]  <TASK>
[ 10.129232][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.129455][ T227] ? __warn (kernel/panic.c:748) 
[ 10.129626][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.129866][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.130101][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.130280][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.130499][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.130733][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.130963][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.131256][ 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) 
[ 10.131482][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.131713][ T227] register_netdevice (net/core/dev.c:11003) 
[ 10.131942][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.132464][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.132713][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.132995][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 10.133179][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.133477][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.133755][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 10.134034][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 10.134268][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 10.134544][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 10.134766][ 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)) 
[ 10.134934][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 10.135168][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 10.135397][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 10.135613][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 10.135833][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 10.136057][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 10.136341][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 10.136563][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 10.136779][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.136998][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.137223][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 10.137452][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 10.137671][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 10.137890][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.138112][ 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) 
[ 10.138353][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 10.138584][ T227] device_add (drivers/base/core.c:3672) 
[ 10.138808][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 10.139024][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 10.139271][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 10.139554][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 10.139852][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.140074][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.140310][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.140525][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.140750][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.140926][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.141156][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 10.141376][ 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) 
[ 10.141604][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 10.141834][ T227] ksys_write (fs/read_write.c:731) 
[ 10.142003][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.142232][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.142465][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.142690][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.142965][  T227] RIP: 0033:0x7f8de2523b77
[ 10.143210][ T227] Code: Unable to access opcode bytes at 0x7f8de2523b4d.

Code starting with the faulting instruction
===========================================
[   10.143497][  T227] RSP: 002b:00007ffefe4abbb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.143825][  T227] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f8de2523b77
[   10.144163][  T227] RDX: 0000000000000007 RSI: 000056128caedb50 RDI: 0000000000000001
[   10.144486][  T227] RBP: 000056128caedb50 R08: 0000000000000000 R09: 00007f8de25964e0
[   10.144804][  T227] R10: 00007f8de25963e0 R11: 0000000000000246 R12: 0000000000000007
[   10.145121][  T227] R13: 00007f8de25df760 R14: 0000000000000007 R15: 00007f8de25da9c0
| [   10.215011][  T227] ------------[ cut here ]------------
| [ 10.215465][ T227] WARNING: CPU: 3 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   10.215949][  T227] Modules linked in: netdevsim
| [   10.216884][  T227] Tainted: [W]=WARN
[   10.217067][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.217377][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.217696][ 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
[   10.218644][  T227] RSP: 0018:ffffc90000b47520 EFLAGS: 00010246
[   10.218955][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.219324][  T227] RDX: 0000000000000000 RSI: ffff888009b4ac98 RDI: ffff888009ea50f8
[   10.219678][  T227] RBP: ffffffff95923440 R08: 0000000000000000 R09: fffffbfff26fd83c
[   10.220039][  T227] R10: ffffffff937ec1e7 R11: ffff888009ea45c0 R12: 0000000000000000
[   10.220427][  T227] R13: ffff888009b4a128 R14: ffff888009b4a008 R15: ffff888009b4a000
[   10.220783][  T227] FS:  00007f8de23e2740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   10.221204][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.221503][  T227] CR2: 00007f8de2467440 CR3: 00000000029b0006 CR4: 0000000000772ef0
[   10.221864][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.222234][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.222587][  T227] PKRU: 55555554
[   10.222768][  T227] Call Trace:
[   10.222947][  T227]  <TASK>
[ 10.223069][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.223320][ T227] ? __warn (kernel/panic.c:748) 
[ 10.223504][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.223749][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.223987][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.224182][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.224423][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.224674][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.224921][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.225229][ 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) 
[ 10.225480][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.225719][ T227] register_netdevice (net/core/dev.c:11003) 
[ 10.225960][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.226213][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.226468][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.226764][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 10.226948][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.227272][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.227569][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 10.227870][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 10.228116][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 10.228418][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 10.228673][ 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)) 
[ 10.228874][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 10.229121][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 10.229374][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 10.229610][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 10.229844][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 10.230082][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 10.230382][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 10.230622][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 10.230864][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.231105][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.231351][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 10.231597][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 10.231833][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 10.232063][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.232308][ 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) 
[ 10.232559][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 10.232798][ T227] device_add (drivers/base/core.c:3672) 
[ 10.233040][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 10.233283][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 10.233538][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 10.233839][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 10.234152][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.234396][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.234639][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.234875][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.235134][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.235322][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.235563][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 10.235800][ 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) 
[ 10.236053][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 10.236314][ T227] ksys_write (fs/read_write.c:731) 
[ 10.236500][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.236733][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.236985][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.237233][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.237526][  T227] RIP: 0033:0x7f8de2523b77
[ 10.237777][ T227] Code: Unable to access opcode bytes at 0x7f8de2523b4d.

Code starting with the faulting instruction
===========================================
[   10.238072][  T227] RSP: 002b:00007ffefe4abce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.238430][  T227] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f8de2523b77
[   10.238787][  T227] RDX: 0000000000000007 RSI: 000056128caedb50 RDI: 0000000000000001
[   10.239136][  T227] RBP: 000056128caedb50 R08: 0000000000000000 R09: 00007f8de25964e0
[   10.239492][  T227] R10: 00007f8de25963e0 R11: 0000000000000246 R12: 0000000000000007
[   10.239855][  T227] R13: 00007f8de25df760 R14: 0000000000000007 R15: 00007f8de25da9c0
| [   10.660582][  T271] ------------[ cut here ]------------
| [ 10.661030][ T271] WARNING: CPU: 1 PID: 271 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) 
| [   10.661512][  T271] Modules linked in: netdevsim
| [   10.662197][  T271] Tainted: [W]=WARN
[   10.662378][  T271] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.662652][ T271] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.662952][ T271] 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
[   10.663793][  T271] RSP: 0018:ffffc900005771e8 EFLAGS: 00010246
[   10.664120][  T271] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.664508][  T271] RDX: 0000000000000000 RSI: ffff88800b692c98 RDI: ffff88801448d080
[   10.664886][  T271] RBP: ffff888014440040 R08: 0000000000000000 R09: fffffbfff26fd83c
[   10.665276][  T271] R10: ffffffff937ec1e7 R11: ffff88801448c5c0 R12: 0000000000000000
[   10.665635][  T271] R13: ffff88800b692128 R14: ffff88800b692008 R15: ffff88800b692000
[   10.665997][  T271] FS:  00007f26b39f9800(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   10.666434][  T271] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.666742][  T271] CR2: 00007f26b3b38440 CR3: 0000000009f3c001 CR4: 0000000000772ef0
[   10.667080][  T271] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.667590][  T271] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.667948][  T271] PKRU: 55555554
[   10.668132][  T271] Call Trace:
[   10.668303][  T271]  <TASK>
[ 10.668418][ T271] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.668663][ T271] ? __warn (kernel/panic.c:748) 
[ 10.668836][ T271] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.669062][ T271] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.669304][ T271] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.669461][ T271] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.669684][ T271] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.669901][ T271] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.670148][ T271] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 10.670403][ T271] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.670647][ T271] ? _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) 
[ 10.670863][ T271] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.671089][ T271] register_netdevice (net/core/dev.c:11003) 
[ 10.671319][ T271] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.671554][ T271] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.671796][ T271] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.672112][ T271] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.672455][ T271] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 10.672777][ T271] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 10.673094][ T271] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 10.673423][ T271] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 10.673723][ T271] devlink_reload (net/devlink/dev.c:474) 
[ 10.673956][ T271] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 10.674209][ T271] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 10.674541][ T271] ? cap_capable (security/commoncap.c:131) 
[ 10.674773][ T271] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1146 fs/file.c:1160) 
[ 10.674969][ T271] devlink_nl_reload_doit (net/devlink/dev.c:584) 
[ 10.675193][ T271] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 10.675467][ T271] ? __nla_parse (lib/nlattr.c:732) 
[ 10.675714][ T271] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1115) 
[ 10.675941][ T271] ? __pfx_genl_family_rcv_msg_doit (net/netlink/genetlink.c:1088) 
[ 10.676248][ T271] ? cap_capable (security/commoncap.c:131) 
[ 10.676461][ T271] ? validate_chain (kernel/locking/lockdep.c:3799 kernel/locking/lockdep.c:3819 kernel/locking/lockdep.c:3874) 
[ 10.676676][ T271] genl_family_rcv_msg (net/netlink/genetlink.c:1195) 
[ 10.676900][ T271] ? __pfx_genl_family_rcv_msg (net/netlink/genetlink.c:1160) 
[ 10.677112][ T271] ? __pfx_devlink_nl_pre_doit_dev_lock (net/devlink/netlink.c:257) 
[ 10.677385][ T271] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 10.677648][ T271] ? __pfx_devlink_nl_post_doit_dev_lock (net/devlink/netlink.c:288) 
[ 10.677935][ T271] genl_rcv_msg (net/netlink/genetlink.c:65 net/netlink/genetlink.c:1211) 
[ 10.678170][ T271] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 10.678412][ T271] ? __pfx_genl_rcv_msg (net/netlink/genetlink.c:1201) 
[ 10.678626][ T271] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 10.678858][ T271] ? genl_rcv (net/netlink/genetlink.c:1219) 
[ 10.679031][ T271] ? __pfx_down_read (kernel/locking/rwsem.c:1522) 
[ 10.679252][ T271] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 10.679476][ T271] genl_rcv (net/netlink/genetlink.c:1220) 
[ 10.679643][ T271] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 10.679878][ T271] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 10.680136][ T271] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 10.680391][ T271] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 10.680644][ T271] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 10.680888][ T271] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 10.681146][ T271] ? __might_fault (mm/memory.c:6851 mm/memory.c:6844) 
[ 10.681412][ T271] __sys_sendto (net/socket.c:709 net/socket.c:724 net/socket.c:2178) 
[ 10.681645][ T271] ? __pfx___sys_sendto (net/socket.c:2145) 
[ 10.681867][ T271] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.682083][ T271] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 10.682339][ T271] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 10.682581][ T271] ? __rseq_handle_notify_resume (kernel/rseq.c:420) 
[ 10.682888][ T271] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:403) 
[ 10.683177][ T271] ? __pfx___x64_sys_openat (fs/open.c:1454) 
[ 10.683405][ T271] __x64_sys_sendto (net/socket.c:2181) 
[ 10.683630][ T271] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.683911][ T271] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.684151][ T271] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.684435][  T271] RIP: 0033:0x7f26b3c05a4a
[ 10.684639][ T271] 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
[   10.685400][  T271] RSP: 002b:00007ffe1e7710e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   10.685729][  T271] RAX: ffffffffffffffda RBX: 000000001683eb00 RCX: 00007f26b3c05a4a
[   10.686026][  T271] RDX: 0000000000000040 RSI: 000000001683eb00 RDI: 0000000000000005
[   10.686405][  T271] RBP: 000000001683e910 R08: 00007f26b3da9200 R09: 000000000000000c
[   10.686704][  T271] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000040f200
[   10.687016][  T271] R13: 000000001683e910 R14: 0000000000000000 R15: 0000000000000001
| [   10.857616][  T276] ------------[ cut here ]------------
| [ 10.858008][ T276] WARNING: CPU: 1 PID: 276 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) 
| [   10.858522][  T276] Modules linked in: netdevsim
| [   10.859062][  T276] Tainted: [W]=WARN
[   10.859222][  T276] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.859459][ T276] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.859711][ T276] 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
[   10.860415][  T276] RSP: 0018:ffffc900005871e8 EFLAGS: 00010246
[   10.860652][  T276] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.860933][  T276] RDX: 0000000000000000 RSI: ffff88800b4aac98 RDI: ffff8880027b5080
[   10.861230][  T276] RBP: ffff888014440040 R08: 0000000000000000 R09: fffffbfff26fd83c
[   10.861524][  T276] R10: ffffffff937ec1e7 R11: ffff8880027b45c0 R12: 0000000000000000
[   10.861802][  T276] R13: ffff88800b4aa128 R14: ffff88800b4aa008 R15: ffff88800b4aa000
[   10.862090][  T276] FS:  00007fb7d3dcb800(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   10.862437][  T276] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.862682][  T276] CR2: 000056125ac14990 CR3: 0000000002060005 CR4: 0000000000772ef0
[   10.862973][  T276] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.863272][  T276] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.863553][  T276] PKRU: 55555554
[   10.863695][  T276] Call Trace:
[   10.863838][  T276]  <TASK>
[ 10.863935][ T276] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.864136][ T276] ? __warn (kernel/panic.c:748) 
[ 10.864284][ T276] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.864478][ T276] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.864687][ T276] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.864833][ T276] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.865025][ T276] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.865238][ T276] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.865427][ T276] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 10.865619][ T276] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.865868][ T276] ? _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) 
[ 10.866070][ T276] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.866277][ T276] register_netdevice (net/core/dev.c:11003) 
[ 10.866485][ T276] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.866698][ T276] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.866948][ T276] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.867208][ T276] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.867465][ T276] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 10.867724][ T276] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 10.867967][ T276] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 10.868223][ T276] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 10.868498][ T276] devlink_reload (net/devlink/dev.c:474) 
[ 10.868698][ T276] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 10.868883][ T276] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 10.869096][ T276] ? cap_capable (security/commoncap.c:131) 
[ 10.869303][ T276] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1146 fs/file.c:1160) 
[ 10.869463][ T276] devlink_nl_reload_doit (net/devlink/dev.c:584) 
[ 10.869662][ T276] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 10.869911][ T276] ? __nla_parse (lib/nlattr.c:732) 
[ 10.870109][ T276] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1115) 
[ 10.870315][ T276] ? __pfx_genl_family_rcv_msg_doit (net/netlink/genetlink.c:1088) 
[ 10.870564][ T276] ? cap_capable (security/commoncap.c:131) 
[ 10.870750][ T276] ? validate_chain (kernel/locking/lockdep.c:3799 kernel/locking/lockdep.c:3819 kernel/locking/lockdep.c:3874) 
[ 10.870944][ T276] genl_family_rcv_msg (net/netlink/genetlink.c:1195) 
[ 10.871163][ T276] ? __pfx_genl_family_rcv_msg (net/netlink/genetlink.c:1160) 
[ 10.871378][ T276] ? __pfx_devlink_nl_pre_doit_dev_lock (net/devlink/netlink.c:257) 
[ 10.871619][ T276] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 10.871852][ T276] ? __pfx_devlink_nl_post_doit_dev_lock (net/devlink/netlink.c:288) 
[ 10.872097][ T276] genl_rcv_msg (net/netlink/genetlink.c:65 net/netlink/genetlink.c:1211) 
[ 10.872309][ T276] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 10.872511][ T276] ? __pfx_genl_rcv_msg (net/netlink/genetlink.c:1201) 
[ 10.872703][ T276] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 10.872914][ T276] ? genl_rcv (net/netlink/genetlink.c:1219) 
[ 10.873056][ T276] ? __pfx_down_read (kernel/locking/rwsem.c:1522) 
[ 10.873271][ T276] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 10.873467][ T276] genl_rcv (net/netlink/genetlink.c:1220) 
[ 10.873608][ T276] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 10.873813][ T276] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 10.874010][ T276] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 10.874219][ T276] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 10.874422][ T276] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 10.874611][ T276] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 10.874810][ T276] ? __might_fault (mm/memory.c:6851 mm/memory.c:6844) 
[ 10.875007][ T276] __sys_sendto (net/socket.c:709 net/socket.c:724 net/socket.c:2178) 
[ 10.875221][ T276] ? __pfx___sys_sendto (net/socket.c:2145) 
[ 10.875409][ T276] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 10.875609][ T276] ? clockevents_program_event (kernel/time/clockevents.c:326) 
[ 10.875808][ T276] ? clockevents_program_event (kernel/time/clockevents.c:334 (discriminator 3)) 
[ 10.876055][ T276] ? hrtimer_interrupt (kernel/time/hrtimer.c:1940) 
[ 10.876266][ T276] __x64_sys_sendto (net/socket.c:2181) 
[ 10.876465][ T276] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.876705][ T276] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.876906][ T276] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.877154][  T276] RIP: 0033:0x7fb7d3fd7a4a
[ 10.877349][ T276] 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
[   10.878006][  T276] RSP: 002b:00007ffca490cb38 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   10.878317][  T276] RAX: ffffffffffffffda RBX: 000000000a928b00 RCX: 00007fb7d3fd7a4a
[   10.878616][  T276] RDX: 0000000000000040 RSI: 000000000a928b00 RDI: 0000000000000005
[   10.878909][  T276] RBP: 000000000a928910 R08: 00007fb7d417b200 R09: 000000000000000c
[   10.879195][  T276] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000040f200
[   10.879476][  T276] R13: 000000000a928910 R14: 0000000000000000 R15: 0000000000000001
| [   11.062505][  T281] ------------[ cut here ]------------
| [ 11.062921][ T281] WARNING: CPU: 2 PID: 281 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) 
| [   11.063358][  T281] Modules linked in: netdevsim
| [   11.063940][  T281] Tainted: [W]=WARN
[   11.064094][  T281] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 11.064384][ T281] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.064654][ T281] 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
[   11.065341][  T281] RSP: 0018:ffffc900005b71e8 EFLAGS: 00010246
[   11.065682][  T281] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   11.065985][  T281] RDX: 0000000000000000 RSI: ffff8880128aac98 RDI: ffff8880026e2dc0
[   11.066308][  T281] RBP: ffff888014440040 R08: 0000000000000000 R09: fffffbfff26fd83c
[   11.066613][  T281] R10: ffffffff937ec1e7 R11: ffff8880026e2300 R12: 0000000000000000
[   11.066909][  T281] R13: ffff8880128aa128 R14: ffff8880128aa008 R15: ffff8880128aa000
[   11.067219][  T281] FS:  00007f2a56064800(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   11.067563][  T281] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   11.067821][  T281] CR2: 00007f49b572b7d0 CR3: 000000000b128005 CR4: 0000000000772ef0
[   11.068121][  T281] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   11.068445][  T281] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   11.068761][  T281] PKRU: 55555554
[   11.068914][  T281] Call Trace:
[   11.069075][  T281]  <TASK>
[ 11.069202][ T281] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.069411][ T281] ? __warn (kernel/panic.c:748) 
[ 11.069578][ T281] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.069792][ T281] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 11.070010][ T281] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 11.070188][ T281] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 11.070401][ T281] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 11.070628][ T281] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.070835][ T281] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 11.071040][ T281] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 11.071329][ T281] ? _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) 
[ 11.071546][ T281] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 11.071756][ T281] register_netdevice (net/core/dev.c:11003) 
[ 11.071964][ T281] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 11.072199][ T281] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 11.072431][ T281] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 11.072702][ T281] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 11.072970][ T281] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 11.073253][ T281] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 11.073514][ T281] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 11.073767][ T281] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 11.074034][ T281] devlink_reload (net/devlink/dev.c:474) 
[ 11.074266][ T281] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 11.074473][ T281] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 11.074688][ T281] ? cap_capable (security/commoncap.c:131) 
[ 11.074901][ T281] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1146 fs/file.c:1160) 
[ 11.075069][ T281] devlink_nl_reload_doit (net/devlink/dev.c:584) 
[ 11.075288][ T281] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 11.075537][ T281] ? __nla_parse (lib/nlattr.c:732) 
[ 11.075745][ T281] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1115) 
[ 11.075950][ T281] ? __pfx_genl_family_rcv_msg_doit (net/netlink/genetlink.c:1088) 
[ 11.076228][ T281] ? cap_capable (security/commoncap.c:131) 
[ 11.076437][ T281] ? validate_chain (kernel/locking/lockdep.c:3799 kernel/locking/lockdep.c:3819 kernel/locking/lockdep.c:3874) 
[ 11.076657][ T281] genl_family_rcv_msg (net/netlink/genetlink.c:1195) 
[ 11.076866][ T281] ? __pfx_genl_family_rcv_msg (net/netlink/genetlink.c:1160) 
[ 11.077076][ T281] ? __pfx_devlink_nl_pre_doit_dev_lock (net/devlink/netlink.c:257) 
[ 11.077334][ T281] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 11.077577][ T281] ? __pfx_devlink_nl_post_doit_dev_lock (net/devlink/netlink.c:288) 
[ 11.077845][ T281] genl_rcv_msg (net/netlink/genetlink.c:65 net/netlink/genetlink.c:1211) 
[ 11.078061][ T281] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 11.078284][ T281] ? __pfx_genl_rcv_msg (net/netlink/genetlink.c:1201) 
[ 11.078508][ T281] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 11.078741][ T281] ? genl_rcv (net/netlink/genetlink.c:1219) 
[ 11.078904][ T281] ? __pfx_down_read (kernel/locking/rwsem.c:1522) 
[ 11.079109][ T281] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 11.079339][ T281] genl_rcv (net/netlink/genetlink.c:1220) 
[ 11.079510][ T281] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 11.079717][ T281] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 11.079918][ T281] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 11.080137][ T281] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 11.080370][ T281] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 11.080573][ T281] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 11.080779][ T281] ? __might_fault (mm/memory.c:6851 mm/memory.c:6844) 
[ 11.080986][ T281] __sys_sendto (net/socket.c:709 net/socket.c:724 net/socket.c:2178) 
[ 11.081239][ T281] ? __pfx___sys_sendto (net/socket.c:2145) 
[ 11.081438][ T281] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 11.081644][ T281] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 11.081864][ T281] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 11.082086][ T281] ? __rseq_handle_notify_resume (kernel/rseq.c:420) 
[ 11.082355][ T281] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 11.082561][ T281] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:403) 
[ 11.082826][ T281] ? __pfx___x64_sys_openat (fs/open.c:1454) 
[ 11.083035][ T281] __x64_sys_sendto (net/socket.c:2181) 
[ 11.083250][ T281] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 11.083500][ T281] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 11.083722][ T281] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   11.083975][  T281] RIP: 0033:0x7f2a56270a4a
[ 11.084196][ T281] 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
[   11.084918][  T281] RSP: 002b:00007fff590ddc18 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   11.085232][  T281] RAX: ffffffffffffffda RBX: 000000002437bb00 RCX: 00007f2a56270a4a
[   11.085530][  T281] RDX: 0000000000000040 RSI: 000000002437bb00 RDI: 0000000000000005
[   11.085819][  T281] RBP: 000000002437b910 R08: 00007f2a56414200 R09: 000000000000000c
[   11.086121][  T281] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000040f200
[   11.086435][  T281] R13: 000000002437b910 R14: 0000000000000000 R15: 0000000000000001
| [   32.009107][   T11] ------------[ cut here ]------------
| [ 32.009436][ 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) 
| [   32.009813][   T11] Modules linked in: netdevsim
| [   32.010391][   T11] Tainted: [W]=WARN
[   32.010538][   T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.010767][   T11] Workqueue: netns cleanup_net
[ 32.010981][ T11] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 32.011230][ 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
[   32.011876][   T11] RSP: 0000:ffffc900000b7620 EFLAGS: 00010246
[   32.012113][   T11] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   32.012400][   T11] RDX: 0000000000000000 RSI: ffff88800b332c98 RDI: ffff888001a82e10
[   32.012674][   T11] RBP: ffffffff95923440 R08: 0000000000000000 R09: fffffbfff26fd83c
[   32.012948][   T11] R10: ffffffff937ec1e7 R11: ffff888001a82300 R12: 0000000000000000
[   32.013240][   T11] R13: ffff88800b332128 R14: ffff88800b332008 R15: ffff88800b332000
[   32.013521][   T11] FS:  0000000000000000(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   32.013846][   T11] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.014083][   T11] CR2: 00007fa791d961b4 CR3: 000000000f528006 CR4: 0000000000772ef0
[   32.014461][   T11] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   32.014739][   T11] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   32.015015][   T11] PKRU: 55555554
[   32.015165][   T11] Call Trace:
[   32.015306][   T11]  <TASK>
[ 32.015401][ T11] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 32.015597][ T11] ? __warn (kernel/panic.c:748) 
[ 32.015742][ T11] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 32.015930][ T11] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 32.016137][ T11] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 32.016284][ T11] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 32.016470][ T11] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 32.016677][ T11] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 32.016876][ T11] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 32.017114][ 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) 
[ 32.017316][ T11] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 32.017512][ T11] register_netdevice (net/core/dev.c:11003) 
[ 32.017713][ T11] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 32.017911][ T11] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 32.018120][ T11] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 32.018388][ T11] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 32.018643][ T11] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 32.018891][ T11] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 32.019145][ T11] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 32.019387][ T11] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 32.019638][ T11] devlink_reload (net/devlink/dev.c:474) 
[ 32.019840][ T11] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 32.020030][ T11] ? devlinks_xa_find_get (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/devlink/core.c:343) 
[ 32.020239][ T11] devlink_pernet_pre_exit (net/devlink/core.c:288 net/devlink/devl_internal.h:114 net/devlink/core.c:513) 
[ 32.020434][ T11] ? __pfx_devlink_pernet_pre_exit (net/devlink/core.c:496) 
[ 32.020681][ T11] cleanup_net (net/core/net_namespace.c:162 net/core/net_namespace.c:632) 
[ 32.020871][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 32.021067][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:594) 
[ 32.021264][ T11] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 32.021458][ T11] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 32.021643][ T11] ? process_one_work (kernel/workqueue.c:3214) 
[ 32.021841][ T11] process_one_work (kernel/workqueue.c:3238) 
[ 32.022038][ T11] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 32.022238][ T11] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 32.022437][ T11] ? assign_work (kernel/workqueue.c:1200) 
[ 32.022631][ T11] worker_thread (kernel/workqueue.c:3313 kernel/workqueue.c:3400) 
[ 32.022830][ T11] ? __pfx_worker_thread (kernel/workqueue.c:3346) 
[ 32.023023][ T11] kthread (kernel/kthread.c:464) 
[ 32.023181][ T11] ? __pfx_kthread (kernel/kthread.c:413) 
[ 32.023381][ T11] ? __pfx_kthread (kernel/kthread.c:413) 
[ 32.023573][ T11] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 32.023765][ 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