======================================
| 0
| xx__-> [   10.586790][  T228] ------------[ cut here ]------------
| [ 10.587587][ T228] WARNING: CPU: 2 PID: 228 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) 
| [   10.588470][  T228] Modules linked in: netdevsim
[   10.589624][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.590145][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.590652][ T228] 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
[   10.591973][  T228] RSP: 0000:ffffc90000b57520 EFLAGS: 00010246
[   10.592480][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.593059][  T228] RDX: 0000000000000000 RSI: ffff88800ad5ac98 RDI: ffff88800a442e38
[   10.593652][  T228] RBP: ffffffffbe723440 R08: 0000000000000000 R09: fffffbfff78bd83c
[   10.594242][  T228] R10: ffffffffbc5ec1e7 R11: ffff88800a442300 R12: 0000000000000000
[   10.594816][  T228] R13: ffff88800ad5a128 R14: ffff88800ad5a008 R15: ffff88800ad5a000
[   10.595417][  T228] FS:  00007fea4a959740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   10.596115][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.596610][  T228] CR2: 00007fea4a9aa180 CR3: 000000000adea003 CR4: 0000000000772ef0
[   10.597203][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.597776][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.598379][  T228] PKRU: 55555554
[   10.598736][  T228] Call Trace:
[   10.599047][  T228]  <TASK>
[ 10.599294][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.599707][ T228] ? __warn (kernel/panic.c:748) 
[ 10.600019][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.600436][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.600847][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.601157][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.601554][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.601968][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.602406][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.602915][ T228] ? _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) 
[ 10.603340][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.603743][ T228] register_netdevice (net/core/dev.c:11003) 
[ 10.604177][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.604598][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.605020][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.605540][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 10.605845][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.606362][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.606861][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 10.607382][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 10.607813][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 10.608311][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 10.608697][ T228] ? 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)) 
[ 10.608998][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 10.609423][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 10.609826][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 10.610271][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 10.610665][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 10.611069][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 10.611543][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 10.611942][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 10.612344][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.612772][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.613029][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 10.613289][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 10.613535][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 10.613794][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.614048][ T228] ? 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) 
[ 10.614317][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 10.614576][ T228] device_add (drivers/base/core.c:3672) 
[ 10.614836][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 10.615099][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 10.615364][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 10.615667][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 10.615987][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.616233][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.616480][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.616719][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.616972][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.617183][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.617430][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 10.617674][ T228] ? 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) 
[ 10.617941][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 10.618208][ T228] ksys_write (fs/read_write.c:731) 
[ 10.618395][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.618646][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.618896][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.619148][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.619438][  T228] RIP: 0033:0x7fea4aa9ab77
[ 10.619704][ T228] 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
[   10.620559][  T228] RSP: 002b:00007ffd9097afc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.620927][  T228] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fea4aa9ab77
[   10.621304][  T228] RDX: 0000000000000007 RSI: 0000561a838beb50 RDI: 0000000000000001
[   10.621647][  T228] RBP: 0000561a838beb50 R08: 0000000000000003 R09: 0000000000000000
[   10.621998][  T228] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000007
[   10.622370][  T228] R13: 00007fea4ab56760 R14: 0000000000000007 R15: 00007fea4ab519c0
| [   10.682760][  T228] ------------[ cut here ]------------
| [ 10.683104][ T228] WARNING: CPU: 3 PID: 228 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) 
| [   10.683544][  T228] Modules linked in: netdevsim
| [   10.684195][  T228] Tainted: [W]=WARN
[   10.684459][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.684717][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.684982][ T228] 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
[   10.685711][  T228] RSP: 0018:ffffc90000b57520 EFLAGS: 00010246
[   10.685972][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.686290][  T228] RDX: 0000000000000000 RSI: ffff8880051a2c98 RDI: ffff88800a442e38
[   10.686627][  T228] RBP: ffffffffbe723440 R08: 0000000000000000 R09: fffffbfff78bd83c
[   10.686989][  T228] R10: ffffffffbc5ec1e7 R11: ffff88800a442300 R12: 0000000000000000
[   10.687362][  T228] R13: ffff8880051a2128 R14: ffff8880051a2008 R15: ffff8880051a2000
[   10.687674][  T228] FS:  00007fea4a959740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   10.688036][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.688303][  T228] CR2: 00007ffed261bfd8 CR3: 000000000adea004 CR4: 0000000000772ef0
[   10.688609][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.688923][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.689237][  T228] PKRU: 55555554
[   10.689402][  T228] Call Trace:
[   10.689560][  T228]  <TASK>
[ 10.689667][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.689879][ T228] ? __warn (kernel/panic.c:748) 
[ 10.690045][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.690264][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.690480][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.690643][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.690848][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.691111][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.691343][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.691603][ T228] ? _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) 
[ 10.691816][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.692039][ T228] register_netdevice (net/core/dev.c:11003) 
[ 10.692259][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.692486][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.692756][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.693073][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 10.693251][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.693525][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.693792][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 10.694086][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 10.694311][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 10.694592][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 10.694807][ T228] ? 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)) 
[ 10.694971][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 10.695240][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 10.695469][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 10.695696][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 10.695912][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 10.696144][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 10.696408][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 10.696625][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 10.696841][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.697058][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.697303][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 10.697535][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 10.697747][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 10.697976][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.698200][ T228] ? 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) 
[ 10.698425][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 10.698645][ T228] device_add (drivers/base/core.c:3672) 
[ 10.698867][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 10.699108][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 10.699348][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 10.699626][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 10.699893][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.700113][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.700363][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.700593][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.700838][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.701022][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.701384][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 10.701733][ T228] ? 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) 
[ 10.702133][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 10.702462][ T228] ksys_write (fs/read_write.c:731) 
[ 10.702729][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.703072][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.703468][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.703866][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.704289][  T228] RIP: 0033:0x7fea4aa9ab77
[ 10.704654][ T228] Code: Unable to access opcode bytes at 0x7fea4aa9ab4d.

Code starting with the faulting instruction
===========================================
[   10.705110][  T228] RSP: 002b:00007ffd9097b0f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.705626][  T228] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fea4aa9ab77
[   10.706121][  T228] RDX: 0000000000000007 RSI: 0000561a838beb50 RDI: 0000000000000001
[   10.706454][  T228] RBP: 0000561a838beb50 R08: 0000000000000000 R09: 00007fea4ab0d4e0
[   10.706900][  T228] R10: 00007fea4ab0d3e0 R11: 0000000000000246 R12: 0000000000000007
[   10.707413][  T228] R13: 00007fea4ab56760 R14: 0000000000000007 R15: 00007fea4ab519c0
| [   10.787647][  T228] ------------[ cut here ]------------
| [ 10.788026][ T228] WARNING: CPU: 2 PID: 228 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) 
| [   10.788503][  T228] Modules linked in: netdevsim
| [   10.789400][  T228] Tainted: [W]=WARN
[   10.789604][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.789900][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.790237][ T228] 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
[   10.790987][  T228] RSP: 0018:ffffc90000b57520 EFLAGS: 00010246
[   10.791282][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.791622][  T228] RDX: 0000000000000000 RSI: ffff88800b5eac98 RDI: ffff88800a442e38
[   10.791977][  T228] RBP: ffffffffbe723440 R08: 0000000000000000 R09: fffffbfff78bd83c
[   10.792348][  T228] R10: ffffffffbc5ec1e7 R11: ffff88800a442300 R12: 0000000000000000
[   10.792729][  T228] R13: ffff88800b5ea128 R14: ffff88800b5ea008 R15: ffff88800b5ea000
[   10.793096][  T228] FS:  00007fea4a959740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   10.793520][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.793822][  T228] CR2: 00007fea4a9de440 CR3: 000000000adea004 CR4: 0000000000772ef0
[   10.794189][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.794521][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.794879][  T228] PKRU: 55555554
[   10.795067][  T228] Call Trace:
[   10.795250][  T228]  <TASK>
[ 10.795374][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.795594][ T228] ? __warn (kernel/panic.c:748) 
[ 10.795767][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.795991][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.796225][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.796400][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.796622][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.796867][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.797106][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.797387][ T228] ? _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) 
[ 10.797644][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.797891][ T228] register_netdevice (net/core/dev.c:11003) 
[ 10.798127][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.798361][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.798605][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.798882][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 10.799059][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.799362][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.799641][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 10.799924][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 10.800174][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 10.800448][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 10.800675][ T228] ? 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)) 
[ 10.800847][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 10.801097][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 10.801331][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 10.801576][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 10.801803][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 10.802039][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 10.802320][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 10.802599][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 10.802824][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.803059][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.803313][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 10.803573][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 10.803812][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 10.804053][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.804305][ T228] ? 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) 
[ 10.804563][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 10.804807][ T228] device_add (drivers/base/core.c:3672) 
[ 10.805089][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 10.805352][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 10.805606][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 10.805925][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 10.806242][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.806475][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.806726][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.806987][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.807245][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.807445][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.807688][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 10.807919][ T228] ? 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) 
[ 10.808184][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 10.808433][ T228] ksys_write (fs/read_write.c:731) 
[ 10.808630][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.808878][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.809145][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.809390][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.809663][  T228] RIP: 0033:0x7fea4aa9ab77
[ 10.809898][ T228] Code: Unable to access opcode bytes at 0x7fea4aa9ab4d.

Code starting with the faulting instruction
===========================================
[   10.810205][  T228] RSP: 002b:00007ffd9097b228 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.810561][  T228] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fea4aa9ab77
[   10.810914][  T228] RDX: 0000000000000007 RSI: 0000561a838beb50 RDI: 0000000000000001
[   10.811268][  T228] RBP: 0000561a838beb50 R08: 0000000000000000 R09: 00007fea4ab0d4e0
[   10.811617][  T228] R10: 00007fea4ab0d3e0 R11: 0000000000000246 R12: 0000000000000007
[   10.811951][  T228] R13: 00007fea4ab56760 R14: 0000000000000007 R15: 00007fea4ab519c0
| [   11.203395][  T270] ------------[ cut here ]------------
| [ 11.203822][ T270] WARNING: CPU: 2 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) 
| [   11.204263][  T270] Modules linked in: netdevsim
| [   11.204825][  T270] Tainted: [W]=WARN
[   11.204988][  T270] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 11.205253][ T270] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.205512][ 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
[   11.206205][  T270] RSP: 0018:ffffc900005771e8 EFLAGS: 00010246
[   11.206462][  T270] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   11.206755][  T270] RDX: 0000000000000000 RSI: ffff88800a762c98 RDI: ffff888002475080
[   11.207062][  T270] RBP: ffff88800b610040 R08: 0000000000000000 R09: fffffbfff78bd83c
[   11.207367][  T270] R10: ffffffffbc5ec1e7 R11: ffff8880024745c0 R12: 0000000000000000
[   11.207666][  T270] R13: ffff88800a762128 R14: ffff88800a762008 R15: ffff88800a762000
[   11.207964][  T270] FS:  00007f3d62afc800(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   11.208310][  T270] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   11.208564][  T270] CR2: 00007f3d62c3b440 CR3: 0000000002468006 CR4: 0000000000772ef0
[   11.208859][  T270] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   11.209190][  T270] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   11.209490][  T270] PKRU: 55555554
[   11.209647][  T270] Call Trace:
[   11.209808][  T270]  <TASK>
[ 11.209920][ T270] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.210142][ T270] ? __warn (kernel/panic.c:748) 
[ 11.210313][ T270] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.210519][ T270] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 11.210730][ T270] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 11.210891][ T270] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 11.211112][ T270] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 11.211328][ T270] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.211535][ T270] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 11.211743][ T270] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 11.211996][ 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) 
[ 11.212217][ T270] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 11.212425][ T270] register_netdevice (net/core/dev.c:11003) 
[ 11.212650][ T270] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 11.212863][ T270] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 11.213093][ T270] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 11.213355][ T270] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 11.213626][ T270] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 11.213894][ T270] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 11.214171][ T270] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 11.214438][ T270] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 11.214703][ T270] devlink_reload (net/devlink/dev.c:474) 
[ 11.214913][ T270] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 11.215144][ T270] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 11.215357][ T270] ? cap_capable (security/commoncap.c:131) 
[ 11.215559][ 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) 
[ 11.215728][ T270] devlink_nl_reload_doit (net/devlink/dev.c:584) 
[ 11.215935][ T270] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 11.216202][ T270] ? __nla_parse (lib/nlattr.c:732) 
[ 11.216414][ T270] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1115) 
[ 11.216622][ T270] ? __pfx_genl_family_rcv_msg_doit (net/netlink/genetlink.c:1088) 
[ 11.216890][ T270] ? cap_capable (security/commoncap.c:131) 
[ 11.217103][ T270] ? validate_chain (kernel/locking/lockdep.c:3799 kernel/locking/lockdep.c:3819 kernel/locking/lockdep.c:3874) 
[ 11.217329][ T270] genl_family_rcv_msg (net/netlink/genetlink.c:1195) 
[ 11.217539][ T270] ? __pfx_genl_family_rcv_msg (net/netlink/genetlink.c:1160) 
[ 11.217746][ T270] ? __pfx_devlink_nl_pre_doit_dev_lock (net/devlink/netlink.c:257) 
[ 11.217991][ T270] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 11.218249][ T270] ? __pfx_devlink_nl_post_doit_dev_lock (net/devlink/netlink.c:288) 
[ 11.218510][ T270] genl_rcv_msg (net/netlink/genetlink.c:65 net/netlink/genetlink.c:1211) 
[ 11.218719][ T270] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 11.218953][ T270] ? __pfx_genl_rcv_msg (net/netlink/genetlink.c:1201) 
[ 11.219175][ T270] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 11.219398][ T270] ? genl_rcv (net/netlink/genetlink.c:1219) 
[ 11.219566][ T270] ? __pfx_down_read (kernel/locking/rwsem.c:1522) 
[ 11.219780][ T270] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 11.219996][ T270] genl_rcv (net/netlink/genetlink.c:1220) 
[ 11.220163][ T270] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 11.220388][ T270] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 11.220604][ T270] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 11.220818][ T270] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 11.221035][ T270] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 11.221253][ T270] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 11.221463][ T270] ? __might_fault (mm/memory.c:6851 mm/memory.c:6844) 
[ 11.221683][ T270] __sys_sendto (net/socket.c:709 net/socket.c:724 net/socket.c:2178) 
[ 11.221898][ T270] ? __pfx___sys_sendto (net/socket.c:2145) 
[ 11.222127][ T270] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 11.222343][ T270] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 11.222588][ T270] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 11.222807][ T270] ? __rseq_handle_notify_resume (kernel/rseq.c:420) 
[ 11.223070][ T270] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:403) 
[ 11.223350][ T270] ? __pfx___x64_sys_openat (fs/open.c:1454) 
[ 11.223574][ T270] __x64_sys_sendto (net/socket.c:2181) 
[ 11.223793][ T270] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 11.224048][ T270] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 11.224280][ T270] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   11.224534][  T270] RIP: 0033:0x7f3d62d08a4a
[ 11.224744][ 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
[   11.225422][  T270] RSP: 002b:00007ffd76572418 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   11.225717][  T270] RAX: ffffffffffffffda RBX: 000000000dbeeb00 RCX: 00007f3d62d08a4a
[   11.226009][  T270] RDX: 0000000000000040 RSI: 000000000dbeeb00 RDI: 0000000000000005
[   11.226349][  T270] RBP: 000000000dbee910 R08: 00007f3d62eac200 R09: 000000000000000c
[   11.226647][  T270] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000040f200
[   11.226947][  T270] R13: 000000000dbee910 R14: 0000000000000000 R15: 0000000000000001
| [   11.420432][  T275] ------------[ cut here ]------------
| [ 11.421095][ 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) 
| [   11.421610][  T275] Modules linked in: netdevsim
| [   11.422320][  T275] Tainted: [W]=WARN
[   11.422499][  T275] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 11.422824][ T275] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.423129][ 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
[   11.423959][  T275] RSP: 0018:ffffc900005071e8 EFLAGS: 00010246
[   11.424239][  T275] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   11.424578][  T275] RDX: 0000000000000000 RSI: ffff88800adbac98 RDI: ffff888009d35080
[   11.424879][  T275] RBP: ffff88800b610040 R08: 0000000000000000 R09: fffffbfff78bd83c
[   11.425197][  T275] R10: ffffffffbc5ec1e7 R11: ffff888009d345c0 R12: 0000000000000000
[   11.425544][  T275] R13: ffff88800adba128 R14: ffff88800adba008 R15: ffff88800adba000
[   11.425915][  T275] FS:  00007f157ff16800(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   11.426324][  T275] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   11.426612][  T275] CR2: 00007f1580055440 CR3: 000000000a7da002 CR4: 0000000000772ef0
[   11.426980][  T275] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   11.427437][  T275] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   11.427824][  T275] PKRU: 55555554
[   11.428027][  T275] Call Trace:
[   11.428233][  T275]  <TASK>
[ 11.428374][ T275] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.428614][ T275] ? __warn (kernel/panic.c:748) 
[ 11.428771][ T275] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.429004][ T275] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 11.429257][ T275] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 11.429424][ T275] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 11.429651][ T275] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 11.429904][ T275] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.430154][ T275] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 11.430398][ T275] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 11.430684][ 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) 
[ 11.430911][ T275] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 11.431154][ T275] register_netdevice (net/core/dev.c:11003) 
[ 11.431368][ T275] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 11.431596][ T275] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 11.431819][ T275] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 11.432107][ T275] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 11.432434][ T275] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 11.432738][ T275] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 11.433037][ T275] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 11.433336][ T275] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 11.433648][ T275] devlink_reload (net/devlink/dev.c:474) 
[ 11.433913][ T275] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 11.434201][ T275] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 11.434476][ T275] ? cap_capable (security/commoncap.c:131) 
[ 11.434737][ 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) 
[ 11.434952][ T275] devlink_nl_reload_doit (net/devlink/dev.c:584) 
[ 11.435207][ T275] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 11.435497][ T275] ? __nla_parse (lib/nlattr.c:732) 
[ 11.435744][ T275] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1115) 
[ 11.435980][ T275] ? __pfx_genl_family_rcv_msg_doit (net/netlink/genetlink.c:1088) 
[ 11.436307][ T275] ? cap_capable (security/commoncap.c:131) 
[ 11.436540][ T275] ? validate_chain (kernel/locking/lockdep.c:3799 kernel/locking/lockdep.c:3819 kernel/locking/lockdep.c:3874) 
[ 11.436785][ T275] genl_family_rcv_msg (net/netlink/genetlink.c:1195) 
[ 11.437028][ T275] ? __pfx_genl_family_rcv_msg (net/netlink/genetlink.c:1160) 
[ 11.437244][ T275] ? __pfx_devlink_nl_pre_doit_dev_lock (net/devlink/netlink.c:257) 
[ 11.437548][ T275] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 11.437838][ T275] ? __pfx_devlink_nl_post_doit_dev_lock (net/devlink/netlink.c:288) 
[ 11.438157][ T275] genl_rcv_msg (net/netlink/genetlink.c:65 net/netlink/genetlink.c:1211) 
[ 11.438422][ T275] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 11.438687][ T275] ? __pfx_genl_rcv_msg (net/netlink/genetlink.c:1201) 
[ 11.438959][ T275] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 11.439254][ T275] ? genl_rcv (net/netlink/genetlink.c:1219) 
[ 11.439458][ T275] ? __pfx_down_read (kernel/locking/rwsem.c:1522) 
[ 11.439730][ T275] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 11.439956][ T275] genl_rcv (net/netlink/genetlink.c:1220) 
[ 11.440151][ T275] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 11.440385][ T275] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 11.440618][ T275] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 11.440862][ T275] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 11.441142][ T275] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 11.441357][ T275] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 11.441563][ T275] ? __might_fault (mm/memory.c:6851 mm/memory.c:6844) 
[ 11.441773][ T275] __sys_sendto (net/socket.c:709 net/socket.c:724 net/socket.c:2178) 
[ 11.442012][ T275] ? __pfx___sys_sendto (net/socket.c:2145) 
[ 11.442234][ T275] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 11.442438][ T275] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 11.442665][ T275] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 11.442880][ T275] ? __rseq_handle_notify_resume (kernel/rseq.c:420) 
[ 11.443141][ T275] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 11.443346][ T275] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:403) 
[ 11.443610][ T275] ? __pfx___x64_sys_openat (fs/open.c:1454) 
[ 11.443818][ T275] __x64_sys_sendto (net/socket.c:2181) 
[ 11.444025][ T275] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 11.444285][ T275] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 11.444497][ T275] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   11.444751][  T275] RIP: 0033:0x7f1580122a4a
[ 11.444962][ 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
[   11.445668][  T275] RSP: 002b:00007fff9bef3768 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   11.445984][  T275] RAX: ffffffffffffffda RBX: 0000000038604b00 RCX: 00007f1580122a4a
[   11.446298][  T275] RDX: 0000000000000040 RSI: 0000000038604b00 RDI: 0000000000000005
[   11.446601][  T275] RBP: 0000000038604910 R08: 00007f15802c6200 R09: 000000000000000c
[   11.446900][  T275] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000040f200
[   11.447219][  T275] R13: 0000000038604910 R14: 0000000000000000 R15: 0000000000000001
| [   11.637939][  T280] ------------[ cut here ]------------
| [ 11.638398][ T280] WARNING: CPU: 1 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) 
| [   11.639107][  T280] Modules linked in: netdevsim
| [   11.640067][  T280] Tainted: [W]=WARN
[   11.640382][  T280] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 11.640794][ T280] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.641272][ 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
[   11.642166][  T280] RSP: 0018:ffffc900005d71e8 EFLAGS: 00010246
[   11.642481][  T280] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   11.642801][  T280] RDX: 0000000000000000 RSI: ffff88800d4aac98 RDI: ffff888009bcd080
[   11.643219][  T280] RBP: ffff88800b610040 R08: 0000000000000000 R09: fffffbfff78bd83c
[   11.643600][  T280] R10: ffffffffbc5ec1e7 R11: ffff888009bcc5c0 R12: 0000000000000000
[   11.644052][  T280] R13: ffff88800d4aa128 R14: ffff88800d4aa008 R15: ffff88800d4aa000
[   11.644551][  T280] FS:  00007fcfb9d14800(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   11.644930][  T280] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   11.645295][  T280] CR2: 00007f61ba49d5a0 CR3: 00000000051fe004 CR4: 0000000000772ef0
[   11.645670][  T280] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   11.646137][  T280] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   11.646442][  T280] PKRU: 55555554
[   11.646586][  T280] Call Trace:
[   11.646727][  T280]  <TASK>
[ 11.646824][ T280] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.647016][ T280] ? __warn (kernel/panic.c:748) 
[ 11.647194][ T280] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.647392][ T280] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 11.647591][ T280] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 11.647737][ T280] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 11.647925][ T280] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 11.648220][ T280] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.648412][ T280] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 11.648606][ T280] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 11.648853][ 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) 
[ 11.649048][ T280] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 11.649345][ T280] register_netdevice (net/core/dev.c:11003) 
[ 11.649592][ T280] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 11.649792][ T280] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 11.650035][ T280] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 11.650389][ T280] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 11.650734][ T280] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 11.650998][ T280] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 11.651288][ T280] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 11.651603][ T280] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 11.651860][ T280] devlink_reload (net/devlink/dev.c:474) 
[ 11.652059][ T280] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 11.652356][ T280] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 11.652563][ T280] ? cap_capable (security/commoncap.c:131) 
[ 11.652753][ 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) 
[ 11.652941][ T280] devlink_nl_reload_doit (net/devlink/dev.c:584) 
[ 11.653265][ T280] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 11.653524][ T280] ? __nla_parse (lib/nlattr.c:732) 
[ 11.653790][ T280] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1115) 
[ 11.653990][ T280] ? __pfx_genl_family_rcv_msg_doit (net/netlink/genetlink.c:1088) 
[ 11.654270][ T280] ? cap_capable (security/commoncap.c:131) 
[ 11.654507][ T280] ? validate_chain (kernel/locking/lockdep.c:3799 kernel/locking/lockdep.c:3819 kernel/locking/lockdep.c:3874) 
[ 11.654782][ T280] genl_family_rcv_msg (net/netlink/genetlink.c:1195) 
[ 11.654979][ T280] ? __pfx_genl_family_rcv_msg (net/netlink/genetlink.c:1160) 
[ 11.655256][ T280] ? __pfx_devlink_nl_pre_doit_dev_lock (net/devlink/netlink.c:257) 
[ 11.655504][ T280] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 11.655796][ T280] ? __pfx_devlink_nl_post_doit_dev_lock (net/devlink/netlink.c:288) 
[ 11.656044][ T280] genl_rcv_msg (net/netlink/genetlink.c:65 net/netlink/genetlink.c:1211) 
[ 11.656320][ T280] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 11.656510][ T280] ? __pfx_genl_rcv_msg (net/netlink/genetlink.c:1201) 
[ 11.656711][ T280] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 11.656983][ T280] ? genl_rcv (net/netlink/genetlink.c:1219) 
[ 11.657196][ T280] ? __pfx_down_read (kernel/locking/rwsem.c:1522) 
[ 11.657409][ T280] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 11.657655][ T280] genl_rcv (net/netlink/genetlink.c:1220) 
[ 11.657801][ T280] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 11.657995][ T280] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 11.658272][ T280] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 11.658476][ T280] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 11.658739][ T280] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 11.658928][ T280] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 11.659214][ T280] ? __might_fault (mm/memory.c:6851 mm/memory.c:6844) 
[ 11.659419][ T280] __sys_sendto (net/socket.c:709 net/socket.c:724 net/socket.c:2178) 
[ 11.659676][ T280] ? __pfx___sys_sendto (net/socket.c:2145) 
[ 11.659866][ T280] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 11.660146][ T280] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 11.660415][ T280] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 11.660622][ T280] ? __rseq_handle_notify_resume (kernel/rseq.c:420) 
[ 11.660918][ T280] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 11.661159][ T280] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:403) 
[ 11.661406][ T280] ? __pfx___x64_sys_openat (fs/open.c:1454) 
[ 11.661668][ T280] __x64_sys_sendto (net/socket.c:2181) 
[ 11.661862][ T280] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 11.662179][ T280] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 11.662383][ T280] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   11.662635][  T280] RIP: 0033:0x7fcfb9f20a4a
[ 11.662885][ 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
[   11.663711][  T280] RSP: 002b:00007ffdb933c2f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   11.663998][  T280] RAX: ffffffffffffffda RBX: 000000003a0e5b00 RCX: 00007fcfb9f20a4a
[   11.664342][  T280] RDX: 0000000000000040 RSI: 000000003a0e5b00 RDI: 0000000000000005
[   11.664703][  T280] RBP: 000000003a0e5910 R08: 00007fcfba0c4200 R09: 000000000000000c
[   11.665048][  T280] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000040f200
[   11.665388][  T280] R13: 000000003a0e5910 R14: 0000000000000000 R15: 0000000000000001
| [   33.720412][   T66] ------------[ cut here ]------------
| [ 33.720819][ T66] WARNING: CPU: 2 PID: 66 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) 
| [   33.721195][   T66] Modules linked in: netdevsim
| [   33.721740][   T66] Tainted: [W]=WARN
[   33.721883][   T66] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   33.722119][   T66] Workqueue: netns cleanup_net
[ 33.722331][ T66] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 33.722572][ T66] 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
[   33.723178][   T66] RSP: 0018:ffffc90000477620 EFLAGS: 00010246
[   33.723407][   T66] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   33.723672][   T66] RDX: 0000000000000000 RSI: ffff88800b8c2c98 RDI: ffff888008d050d0
[   33.723941][   T66] RBP: ffffffffbe723440 R08: 0000000000000000 R09: fffffbfff78bd83c
[   33.724217][   T66] R10: ffffffffbc5ec1e7 R11: ffff888008d045c0 R12: 0000000000000000
[   33.724489][   T66] R13: ffff88800b8c2128 R14: ffff88800b8c2008 R15: ffff88800b8c2000
[   33.724761][   T66] FS:  0000000000000000(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   33.725066][   T66] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   33.725302][   T66] CR2: 00007f61ba5ea26f CR3: 0000000023f28002 CR4: 0000000000772ef0
[   33.725725][   T66] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   33.725994][   T66] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   33.726268][   T66] PKRU: 55555554
[   33.726410][   T66] Call Trace:
[   33.726549][   T66]  <TASK>
[ 33.726649][ T66] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 33.726837][ T66] ? __warn (kernel/panic.c:748) 
[ 33.726984][ T66] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 33.727178][ T66] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 33.727370][ T66] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 33.727515][ T66] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 33.727698][ T66] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 33.727898][ T66] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 33.728098][ T66] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 33.728337][ T66] ? _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) 
[ 33.728529][ T66] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 33.728720][ T66] register_netdevice (net/core/dev.c:11003) 
[ 33.728909][ T66] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 33.729114][ T66] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 33.729313][ T66] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 33.729556][ T66] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 33.729799][ T66] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 33.730040][ T66] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 33.730282][ T66] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 33.730518][ T66] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 33.730755][ T66] devlink_reload (net/devlink/dev.c:474) 
[ 33.730945][ T66] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 33.731138][ T66] ? devlinks_xa_find_get (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/devlink/core.c:343) 
[ 33.731335][ T66] devlink_pernet_pre_exit (net/devlink/core.c:288 net/devlink/devl_internal.h:114 net/devlink/core.c:513) 
[ 33.731515][ T66] ? __pfx_devlink_pernet_pre_exit (net/devlink/core.c:496) 
[ 33.731751][ T66] cleanup_net (net/core/net_namespace.c:162 net/core/net_namespace.c:632) 
[ 33.731933][ T66] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 33.732130][ T66] ? __pfx_cleanup_net (net/core/net_namespace.c:594) 
[ 33.732308][ T66] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 33.732515][ T66] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 33.732694][ T66] ? process_one_work (kernel/workqueue.c:3214) 
[ 33.732886][ T66] process_one_work (kernel/workqueue.c:3238) 
[ 33.733129][ T66] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 33.733332][ T66] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 33.733527][ T66] ? assign_work (kernel/workqueue.c:1200) 
[ 33.733715][ T66] worker_thread (kernel/workqueue.c:3313 kernel/workqueue.c:3400) 
[ 33.733902][ T66] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 33.734150][ T66] ? __pfx_worker_thread (kernel/workqueue.c:3346) 
[ 33.734344][ T66] kthread (kernel/kthread.c:464) 
[ 33.734492][ T66] ? __pfx_kthread (kernel/kthread.c:413) 
[ 33.734684][ T66] ? __pfx_kthread (kernel/kthread.c:413) 
[ 33.734868][ T66] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 33.735053][ T66] ? __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