======================================
| 0
| xx__-> [   28.720010][  T253] ------------[ cut here ]------------
| [ 28.720817][ T253] WARNING: CPU: 3 PID: 253 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:10596) 
| [   28.721300][  T253] Modules linked in: netdevsim psample
[   28.721881][  T253] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 28.722158][ T253] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 28.722458][ T253] Code: 00 e8 13 47 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 5f 99 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 5f 99 00       	call   0x995fb9
  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
[   28.723235][  T253] RSP: 0018:ffffc90000bd7528 EFLAGS: 00010246
[   28.723519][  T253] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   28.723850][  T253] RDX: 0000000000000000 RSI: ffff88800b7dacd0 RDI: ffff88800b9cd0f8
[   28.724185][  T253] RBP: ffffffff8ac53580 R08: 0000000000000000 R09: fffffbfff1142504
[   28.724530][  T253] R10: ffffffff88a12827 R11: ffff88800b9cc5c0 R12: 0000000000000000
[   28.724874][  T253] R13: ffff88800b7da130 R14: ffff88800b7da008 R15: ffff88800b7da000
[   28.725210][  T253] FS:  00007f9a037a21c0(0000) GS:ffff88806cf80000(0000) knlGS:0000000000000000
[   28.725604][  T253] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   28.726063][  T253] CR2: 000056511649a278 CR3: 000000000adbe001 CR4: 0000000000772ef0
[   28.726420][  T253] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   28.726765][  T253] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   28.727106][  T253] PKRU: 55555554
[   28.727290][  T253] Call Trace:
[   28.727467][  T253]  <TASK>
[ 28.727587][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 28.727835][ T253] ? __warn (kernel/panic.c:748) 
[ 28.728011][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 28.728267][ T253] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 28.728509][ T253] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 28.728693][ T253] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 28.728920][ T253] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 28.729169][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 28.729411][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[ 28.729644][ T253] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 28.729930][ T253] ? _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) 
[ 28.730162][ T253] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 28.730404][ T253] register_netdevice (net/core/dev.c:11033) 
[ 28.730645][ T253] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 28.730910][ T253] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 28.731150][ T253] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 28.731404][ T253] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 28.731689][ T253] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 28.731866][ T253] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 28.732190][ T253] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 28.732490][ T253] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 28.732785][ T253] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 28.733029][ T253] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 28.733337][ T253] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 28.733570][ T253] ? 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)) 
[ 28.733745][ T253] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 28.733979][ T253] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 28.734213][ T253] __driver_probe_device (drivers/base/dd.c:800) 
[ 28.734458][ T253] driver_probe_device (drivers/base/dd.c:830) 
[ 28.734686][ T253] __device_attach_driver (drivers/base/dd.c:959) 
[ 28.734913][ T253] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 28.735188][ T253] bus_for_each_drv (drivers/base/bus.c:462) 
[ 28.735423][ T253] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 28.735673][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 28.735907][ T253] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 28.736149][ T253] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 28.736390][ T253] __device_attach (drivers/base/dd.c:1030) 
[ 28.736630][ T253] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 28.736854][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 28.737078][ T253] ? 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) 
[ 28.737354][ T253] bus_probe_device (drivers/base/bus.c:537) 
[ 28.737582][ T253] device_add (drivers/base/core.c:3672) 
[ 28.737812][ T253] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 28.738040][ T253] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 28.738322][ T253] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 28.738624][ T253] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 28.738915][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 28.739136][ T253] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 28.739374][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 28.739594][ T253] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 28.739822][ T253] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 28.740007][ T253] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 28.740244][ T253] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 28.740466][ T253] ? 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) 
[ 28.740697][ T253] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 28.740930][ T253] ksys_write (fs/read_write.c:731) 
[ 28.741103][ T253] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 28.741538][ T253] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 28.741780][ T253] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 28.742007][ T253] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   28.742290][  T253] RIP: 0033:0x7f9a039bcb77
[ 28.742523][ T253] 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
[   28.743438][  T253] RSP: 002b:00007ffcb6a01b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   28.743790][  T253] RAX: ffffffffffffffda RBX: 00007f9a037a2140 RCX: 00007f9a039bcb77
[   28.744120][  T253] RDX: 0000000000000009 RSI: 000055b92f0a3440 RDI: 0000000000000005
[   28.744458][  T253] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[   28.744793][  T253] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f99f563f700
[   28.745132][  T253] R13: 000055b92f0a3440 R14: 0000000000000005 R15: 000055b92ebda910
| [   43.600762][  T253] ------------[ cut here ]------------
| [ 43.601294][ T253] WARNING: CPU: 3 PID: 253 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:10596) 
| [   43.601755][  T253] Modules linked in: netdevsim psample
| [   43.602396][  T253] Tainted: [W]=WARN
[   43.602605][  T253] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 43.602877][ T253] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 43.603156][ T253] Code: 00 e8 13 47 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 5f 99 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 5f 99 00       	call   0x995fb9
  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
[   43.604022][  T253] RSP: 0018:ffffc90000bd7528 EFLAGS: 00010246
[   43.604310][  T253] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   43.604737][  T253] RDX: 0000000000000000 RSI: ffff888005e7acd0 RDI: ffff88800b9cd0f8
[   43.605060][  T253] RBP: ffffffff8ac53580 R08: 0000000000000000 R09: fffffbfff1142504
[   43.605407][  T253] R10: ffffffff88a12827 R11: ffff88800b9cc5c0 R12: 0000000000000000
[   43.605747][  T253] R13: ffff888005e7a130 R14: ffff888005e7a008 R15: ffff888005e7a000
[   43.606155][  T253] FS:  00007f9a037a21c0(0000) GS:ffff88806cf80000(0000) knlGS:0000000000000000
[   43.606624][  T253] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   43.606928][  T253] CR2: 00007fc42efdc960 CR3: 000000000adbe005 CR4: 0000000000772ef0
[   43.607306][  T253] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   43.607651][  T253] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   43.607972][  T253] PKRU: 55555554
[   43.608339][  T253] Call Trace:
[   43.608520][  T253]  <TASK>
[ 43.608642][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 43.608899][ T253] ? __warn (kernel/panic.c:748) 
[ 43.609071][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 43.609310][ T253] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 43.609555][ T253] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 43.609725][ T253] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 43.609946][ T253] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 43.610184][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 43.610422][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[ 43.610657][ T253] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 43.610934][ T253] ? _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) 
[ 43.611162][ T253] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 43.611404][ T253] register_netdevice (net/core/dev.c:11033) 
[ 43.611802][ T253] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 43.612084][ T253] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 43.612330][ T253] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 43.612575][ T253] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 43.612852][ T253] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 43.613021][ T253] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 43.613331][ T253] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 43.613633][ T253] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 43.613923][ T253] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 43.614167][ T253] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 43.614476][ T253] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 43.614752][ T253] ? 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)) 
[ 43.615016][ T253] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 43.615258][ T253] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 43.615516][ T253] __driver_probe_device (drivers/base/dd.c:800) 
[ 43.615770][ T253] driver_probe_device (drivers/base/dd.c:830) 
[ 43.616006][ T253] __device_attach_driver (drivers/base/dd.c:959) 
[ 43.616305][ T253] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 43.616594][ T253] bus_for_each_drv (drivers/base/bus.c:462) 
[ 43.616812][ T253] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 43.617085][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 43.617324][ T253] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 43.617559][ T253] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 43.617861][ T253] __device_attach (drivers/base/dd.c:1030) 
[ 43.618138][ T253] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 43.618381][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 43.618668][ T253] ? 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) 
[ 43.618900][ T253] bus_probe_device (drivers/base/bus.c:537) 
[ 43.619193][ T253] device_add (drivers/base/core.c:3672) 
[ 43.619475][ T253] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 43.619831][ T253] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 43.620065][ T253] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 43.620374][ T253] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 43.620718][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 43.620958][ T253] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 43.621255][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 43.621477][ T253] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 43.621705][ T253] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 43.621973][ T253] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 43.622281][ T253] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 43.622527][ T253] ? 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) 
[ 43.622806][ T253] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 43.623028][ T253] ksys_write (fs/read_write.c:731) 
[ 43.623202][ T253] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 43.623426][ T253] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 43.623663][ T253] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 43.623878][ T253] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   43.624229][  T253] RIP: 0033:0x7f9a039bcb77
[ 43.624456][ T253] 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
[   43.625165][  T253] RSP: 002b:00007ffcb6a01b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   43.625512][  T253] RAX: ffffffffffffffda RBX: 00007f9a037a2140 RCX: 00007f9a039bcb77
[   43.625841][  T253] RDX: 0000000000000009 RSI: 000055b92f0a3440 RDI: 0000000000000005
[   43.626172][  T253] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[   43.626520][  T253] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f99f563f700
[   43.626849][  T253] R13: 000055b92f0a3440 R14: 0000000000000005 R15: 000055b92ebda910
| [   98.120261][  T253] ------------[ cut here ]------------
| [ 98.120839][ T253] WARNING: CPU: 3 PID: 253 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:10596) 
| [   98.121764][  T253] Modules linked in: cls_bpf sch_ingress netdevsim psample
| [   98.123001][  T253] Tainted: [W]=WARN
[   98.123338][  T253] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 98.123784][ T253] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 98.124257][ T253] Code: 00 e8 13 47 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 5f 99 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 5f 99 00       	call   0x995fb9
  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
[   98.125512][  T253] RSP: 0018:ffffc90000bd7528 EFLAGS: 00010246
[   98.126058][  T253] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   98.126619][  T253] RDX: 0000000000000000 RSI: ffff88800df62cd0 RDI: ffff88800b9cd0f8
[   98.127165][  T253] RBP: ffffffff8ac53580 R08: 0000000000000000 R09: fffffbfff1142504
[   98.127729][  T253] R10: ffffffff88a12827 R11: ffff88800b9cc5c0 R12: 0000000000000000
[   98.128296][  T253] R13: ffff88800df62130 R14: ffff88800df62008 R15: ffff88800df62000
[   98.128755][  T253] FS:  00007f9a037a21c0(0000) GS:ffff88806cf80000(0000) knlGS:0000000000000000
[   98.129137][  T253] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   98.129447][  T253] CR2: 00007fc42efdc7d0 CR3: 000000000adbe005 CR4: 0000000000772ef0
[   98.129780][  T253] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   98.130109][  T253] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   98.130722][  T253] PKRU: 55555554
[   98.130896][  T253] Call Trace:
[   98.131063][  T253]  <TASK>
[ 98.131177][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 98.131440][ T253] ? __warn (kernel/panic.c:748) 
[ 98.131633][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 98.131855][ T253] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 98.132079][ T253] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 98.132265][ T253] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 98.132503][ T253] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 98.132740][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 98.132960][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[ 98.133184][ T253] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 98.133491][ T253] ? _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) 
[ 98.133718][ T253] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 98.133951][ T253] register_netdevice (net/core/dev.c:11033) 
[ 98.134177][ T253] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 98.134423][ T253] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 98.134660][ T253] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 98.134903][ T253] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 98.135183][ T253] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 98.135378][ T253] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 98.135876][ T253] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 98.136373][ T253] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 98.136866][ T253] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 98.137287][ T253] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 98.137760][ T253] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 98.138139][ T253] ? 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)) 
[ 98.138447][ T253] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 98.138832][ T253] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 98.139211][ T253] __driver_probe_device (drivers/base/dd.c:800) 
[ 98.139594][ T253] driver_probe_device (drivers/base/dd.c:830) 
[ 98.139962][ T253] __device_attach_driver (drivers/base/dd.c:959) 
[ 98.140338][ T253] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 98.140633][ T253] bus_for_each_drv (drivers/base/bus.c:462) 
[ 98.140890][ T253] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 98.141145][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 98.141406][ T253] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 98.141692][ T253] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 98.141919][ T253] __device_attach (drivers/base/dd.c:1030) 
[ 98.142136][ T253] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 98.142371][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 98.142595][ T253] ? 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) 
[ 98.142822][ T253] bus_probe_device (drivers/base/bus.c:537) 
[ 98.143057][ T253] device_add (drivers/base/core.c:3672) 
[ 98.143302][ T253] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 98.143606][ T253] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 98.143846][ T253] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 98.144142][ T253] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 98.144516][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 98.144892][ T253] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 98.145174][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 98.145429][ T253] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 98.145689][ T253] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 98.145873][ T253] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 98.146106][ T253] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 98.146334][ T253] ? 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) 
[ 98.146570][ T253] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 98.146785][ T253] ksys_write (fs/read_write.c:731) 
[ 98.146946][ T253] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 98.147156][ T253] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 98.147412][ T253] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 98.147631][ T253] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   98.147894][  T253] RIP: 0033:0x7f9a039bcb77
[ 98.148122][ T253] 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
[   98.149189][  T253] RSP: 002b:00007ffcb6a01b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   98.149559][  T253] RAX: ffffffffffffffda RBX: 00007f9a037a2140 RCX: 00007f9a039bcb77
[   98.149895][  T253] RDX: 0000000000000009 RSI: 000055b92f0a8160 RDI: 0000000000000005
[   98.150239][  T253] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[   98.150597][  T253] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f99f563f700
[   98.150929][  T253] R13: 000055b92f0a8160 R14: 0000000000000005 R15: 000055b92ebda910
| [  112.758211][  T253] ------------[ cut here ]------------
| [ 112.758600][ T253] WARNING: CPU: 0 PID: 253 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:10596) 
| [  112.759036][  T253] Modules linked in: cls_bpf sch_ingress netdevsim psample
| [  112.759857][  T253] Tainted: [W]=WARN
[  112.760024][  T253] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 112.760337][ T253] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 112.760601][ T253] Code: 00 e8 13 47 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 5f 99 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 5f 99 00       	call   0x995fb9
  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
[  112.761384][  T253] RSP: 0018:ffffc90000bd7528 EFLAGS: 00010246
[  112.761675][  T253] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  112.762197][  T253] RDX: 0000000000000000 RSI: ffff88800d712cd0 RDI: ffff88800b9cd0f8
[  112.762543][  T253] RBP: ffffffff8ac53580 R08: 0000000000000000 R09: fffffbfff1142504
[  112.762870][  T253] R10: ffffffff88a12827 R11: ffff88800b9cc5c0 R12: 0000000000000000
[  112.763208][  T253] R13: ffff88800d712130 R14: ffff88800d712008 R15: ffff88800d712000
[  112.763569][  T253] FS:  00007f9a037a21c0(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
[  112.763963][  T253] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  112.764259][  T253] CR2: 00007f99f616fc20 CR3: 000000000adbe006 CR4: 0000000000772ef0
[  112.764594][  T253] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  112.764929][  T253] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  112.765274][  T253] PKRU: 55555554
[  112.765444][  T253] Call Trace:
[  112.765630][  T253]  <TASK>
[ 112.765747][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 112.765986][ T253] ? __warn (kernel/panic.c:748) 
[ 112.766164][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 112.766406][ T253] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 112.766637][ T253] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 112.766809][ T253] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 112.767047][ T253] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 112.767299][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 112.767527][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[ 112.767756][ T253] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 112.768056][ T253] ? _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) 
[ 112.768306][ T253] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 112.768533][ T253] register_netdevice (net/core/dev.c:11033) 
[ 112.768759][ T253] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 112.768988][ T253] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 112.769232][ T253] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 112.769475][ T253] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 112.769760][ T253] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 112.769936][ T253] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 112.770242][ T253] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 112.770535][ T253] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 112.770827][ T253] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 112.771068][ T253] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 112.771364][ T253] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 112.771591][ T253] ? 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)) 
[ 112.771764][ T253] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 112.772007][ T253] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 112.772248][ T253] __driver_probe_device (drivers/base/dd.c:800) 
[ 112.772477][ T253] driver_probe_device (drivers/base/dd.c:830) 
[ 112.772701][ T253] __device_attach_driver (drivers/base/dd.c:959) 
[ 112.772925][ T253] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 112.773206][ T253] bus_for_each_drv (drivers/base/bus.c:462) 
[ 112.773439][ T253] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 112.773660][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 112.773885][ T253] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 112.774114][ T253] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 112.774349][ T253] __device_attach (drivers/base/dd.c:1030) 
[ 112.774570][ T253] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 112.774788][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 112.775012][ T253] ? 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) 
[ 112.775252][ T253] bus_probe_device (drivers/base/bus.c:537) 
[ 112.775484][ T253] device_add (drivers/base/core.c:3672) 
[ 112.775722][ T253] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 112.775947][ T253] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 112.776181][ T253] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 112.776486][ T253] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 112.776776][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 112.777007][ T253] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 112.777246][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 112.777467][ T253] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 112.777695][ T253] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 112.777877][ T253] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 112.778181][ T253] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 112.778415][ T253] ? 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) 
[ 112.778651][ T253] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 112.778886][ T253] ksys_write (fs/read_write.c:731) 
[ 112.779068][ T253] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 112.779297][ T253] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 112.779533][ T253] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 112.779770][ T253] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  112.780058][  T253] RIP: 0033:0x7f9a039bcb77
[ 112.780304][ T253] 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
[  112.781071][  T253] RSP: 002b:00007ffcb6a01b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  112.781419][  T253] RAX: ffffffffffffffda RBX: 00007f9a037a2140 RCX: 00007f9a039bcb77
[  112.781746][  T253] RDX: 0000000000000009 RSI: 000055b92f0a8160 RDI: 0000000000000005
[  112.782075][  T253] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[  112.782412][  T253] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f99f563f700
[  112.782744][  T253] R13: 000055b92f0a8160 R14: 0000000000000005 R15: 000055b92ebda910
| [  148.532080][  T253] ------------[ cut here ]------------
| [ 148.532449][ T253] WARNING: CPU: 3 PID: 253 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:10596) 
| [  148.532903][  T253] Modules linked in: cls_bpf sch_ingress netdevsim psample
| [  148.533625][  T253] Tainted: [W]=WARN
[  148.533788][  T253] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 148.534044][ T253] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 148.534314][ T253] Code: 00 e8 13 47 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 5f 99 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 5f 99 00       	call   0x995fb9
  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
[  148.535056][  T253] RSP: 0018:ffffc90000bd7528 EFLAGS: 00010246
[  148.535328][  T253] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  148.535884][  T253] RDX: 0000000000000000 RSI: ffff888015052cd0 RDI: ffff88800b9cd0f8
[  148.536229][  T253] RBP: ffffffff8ac53580 R08: 0000000000000000 R09: fffffbfff1142504
[  148.536561][  T253] R10: ffffffff88a12827 R11: ffff88800b9cc5c0 R12: 0000000000000000
[  148.536902][  T253] R13: ffff888015052130 R14: ffff888015052008 R15: ffff888015052000
[  148.537256][  T253] FS:  00007f9a037a21c0(0000) GS:ffff88806cf80000(0000) knlGS:0000000000000000
[  148.537622][  T253] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  148.537893][  T253] CR2: 00007f9a03e25090 CR3: 000000000adbe001 CR4: 0000000000772ef0
[  148.538207][  T253] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  148.538537][  T253] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  148.538864][  T253] PKRU: 55555554
[  148.539053][  T253] Call Trace:
[  148.539247][  T253]  <TASK>
[ 148.539359][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 148.539584][ T253] ? __warn (kernel/panic.c:748) 
[ 148.539748][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 148.539966][ T253] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 148.540195][ T253] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 148.540361][ T253] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 148.540575][ T253] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 148.540803][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 148.541015][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[ 148.541250][ T253] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 148.541529][ T253] ? _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) 
[ 148.541748][ T253] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 148.541981][ T253] register_netdevice (net/core/dev.c:11033) 
[ 148.542201][ T253] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 148.542420][ T253] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 148.542656][ T253] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 148.542892][ T253] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 148.543159][ T253] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 148.543389][ T253] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 148.543694][ T253] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 148.543969][ T253] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 148.544296][ T253] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 148.544525][ T253] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 148.544787][ T253] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 148.545021][ T253] ? 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)) 
[ 148.545182][ T253] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 148.545420][ T253] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 148.545643][ T253] __driver_probe_device (drivers/base/dd.c:800) 
[ 148.545862][ T253] driver_probe_device (drivers/base/dd.c:830) 
[ 148.546074][ T253] __device_attach_driver (drivers/base/dd.c:959) 
[ 148.546297][ T253] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 148.546557][ T253] bus_for_each_drv (drivers/base/bus.c:462) 
[ 148.546794][ T253] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 148.547017][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 148.547250][ T253] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 148.547484][ T253] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 148.547699][ T253] __device_attach (drivers/base/dd.c:1030) 
[ 148.547923][ T253] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 148.548140][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 148.548366][ T253] ? 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) 
[ 148.548600][ T253] bus_probe_device (drivers/base/bus.c:537) 
[ 148.548813][ T253] device_add (drivers/base/core.c:3672) 
[ 148.549030][ T253] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 148.549245][ T253] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 148.549472][ T253] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 148.549746][ T253] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 148.550031][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 148.550246][ T253] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 148.550494][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 148.550705][ T253] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 148.550933][ T253] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 148.551136][ T253] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 148.551420][ T253] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 148.551626][ T253] ? 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) 
[ 148.551844][ T253] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 148.552063][ T253] ksys_write (fs/read_write.c:731) 
[ 148.552234][ T253] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 148.552440][ T253] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 148.552659][ T253] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 148.552918][ T253] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  148.553174][  T253] RIP: 0033:0x7f9a039bcb77
[ 148.553395][ T253] 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
[  148.554289][  T253] RSP: 002b:00007ffcb6a01b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  148.554611][  T253] RAX: ffffffffffffffda RBX: 00007f9a037a2140 RCX: 00007f9a039bcb77
[  148.554931][  T253] RDX: 0000000000000008 RSI: 000055b92f0aa8f0 RDI: 0000000000000005
[  148.555285][  T253] RBP: 0000000000000008 R08: 0000000000000000 R09: 0000000000000000
[  148.555628][  T253] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f99f563f700
[  148.556111][  T253] R13: 000055b92f0aa8f0 R14: 0000000000000005 R15: 000055b92ebda910
| [  168.936678][  T253] ------------[ cut here ]------------
| [ 168.937100][ T253] WARNING: CPU: 3 PID: 253 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:10596) 
| [  168.937654][  T253] Modules linked in: cls_bpf sch_ingress netdevsim psample
| [  168.938549][  T253] Tainted: [W]=WARN
[  168.938712][  T253] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 168.938978][ T253] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 168.939336][ T253] Code: 00 e8 13 47 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 5f 99 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 5f 99 00       	call   0x995fb9
  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
[  168.940145][  T253] RSP: 0018:ffffc90000bd7528 EFLAGS: 00010246
[  168.940455][  T253] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  168.940795][  T253] RDX: 0000000000000000 RSI: ffff88800a19acd0 RDI: ffff88800b9cd0f8
[  168.941132][  T253] RBP: ffffffff8ac53580 R08: 0000000000000000 R09: fffffbfff1142504
[  168.941536][  T253] R10: ffffffff88a12827 R11: ffff88800b9cc5c0 R12: 0000000000000000
[  168.941890][  T253] R13: ffff88800a19a130 R14: ffff88800a19a008 R15: ffff88800a19a000
[  168.942452][  T253] FS:  00007f9a037a21c0(0000) GS:ffff88806cf80000(0000) knlGS:0000000000000000
[  168.942850][  T253] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  168.943127][  T253] CR2: 00007f99f61e0d60 CR3: 000000000adbe001 CR4: 0000000000772ef0
[  168.943504][  T253] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  168.943840][  T253] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  168.944172][  T253] PKRU: 55555554
[  168.944357][  T253] Call Trace:
[  168.944536][  T253]  <TASK>
[ 168.944652][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 168.944886][ T253] ? __warn (kernel/panic.c:748) 
[ 168.945061][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 168.945314][ T253] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 168.945558][ T253] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 168.945730][ T253] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 168.945953][ T253] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 168.946197][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 168.946442][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[ 168.946680][ T253] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 168.946966][ T253] ? _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) 
[ 168.947197][ T253] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 168.947444][ T253] register_netdevice (net/core/dev.c:11033) 
[ 168.947678][ T253] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 168.947898][ T253] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 168.948147][ T253] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 168.948408][ T253] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 168.948701][ T253] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 168.948880][ T253] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 168.949172][ T253] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 168.949483][ T253] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 168.949779][ T253] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 168.950061][ T253] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 168.950481][ T253] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 168.950714][ T253] ? 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)) 
[ 168.950884][ T253] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 168.951117][ T253] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 168.951401][ T253] __driver_probe_device (drivers/base/dd.c:800) 
[ 168.951718][ T253] driver_probe_device (drivers/base/dd.c:830) 
[ 168.952055][ T253] __device_attach_driver (drivers/base/dd.c:959) 
[ 168.952442][ T253] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 168.952878][ T253] bus_for_each_drv (drivers/base/bus.c:462) 
[ 168.953269][ T253] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 168.953636][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 168.954004][ T253] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 168.954403][ T253] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 168.954781][ T253] __device_attach (drivers/base/dd.c:1030) 
[ 168.955116][ T253] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 168.955515][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 168.955882][ T253] ? 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) 
[ 168.956281][ T253] bus_probe_device (drivers/base/bus.c:537) 
[ 168.956655][ T253] device_add (drivers/base/core.c:3672) 
[ 168.957021][ T253] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 168.957416][ T253] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 168.957706][ T253] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 168.958122][ T253] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 168.958457][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 168.958710][ T253] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 168.959008][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 168.959344][ T253] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 168.959709][ T253] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 168.959999][ T253] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 168.960386][ T253] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 168.960786][ T253] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:885) 
[ 168.961278][ T253] ksys_write (fs/read_write.c:731) 
[ 168.961560][ T253] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 168.961945][ T253] ? kernfs_fop_llseek (fs/kernfs/file.c:891) 
[ 168.962344][ T253] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 168.962719][ T253] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  168.963165][  T253] RIP: 0033:0x7f9a039bcb77
[ 168.963569][ T253] 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
[  168.964791][  T253] RSP: 002b:00007ffcb6a01988 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  168.965332][  T253] RAX: ffffffffffffffda RBX: 00007f9a037a2140 RCX: 00007f9a039bcb77
[  168.965841][  T253] RDX: 0000000000000008 RSI: 000055b92f0ade80 RDI: 0000000000000005
[  168.966371][  T253] RBP: 0000000000000008 R08: 0000000000000000 R09: 0000000000000000
[  168.966893][  T253] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f99f563f940
[  168.967422][  T253] R13: 000055b92f0ade80 R14: 0000000000000005 R15: 000055b92ebda910
| [  185.921324][  T253] ------------[ cut here ]------------
| [ 185.921867][ T253] WARNING: CPU: 1 PID: 253 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:10596) 
| [  185.922592][  T253] Modules linked in: cls_bpf sch_ingress netdevsim psample
| [  185.923533][  T253] Tainted: [W]=WARN
[  185.923698][  T253] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 185.923972][ T253] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 185.924263][ T253] Code: 00 e8 13 47 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 5f 99 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 5f 99 00       	call   0x995fb9
  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
[  185.925263][  T253] RSP: 0018:ffffc90000bd7528 EFLAGS: 00010246
[  185.925551][  T253] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  185.925888][  T253] RDX: 0000000000000000 RSI: ffff888015052cd0 RDI: ffff88800b9cd0f8
[  185.926243][  T253] RBP: ffffffff8ac53580 R08: 0000000000000000 R09: fffffbfff1142504
[  185.926591][  T253] R10: ffffffff88a12827 R11: ffff88800b9cc5c0 R12: 0000000000000000
[  185.926915][  T253] R13: ffff888015052130 R14: ffff888015052008 R15: ffff888015052000
[  185.927278][  T253] FS:  00007f9a037a21c0(0000) GS:ffff88806ce80000(0000) knlGS:0000000000000000
[  185.927644][  T253] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  185.927921][  T253] CR2: 0000555eba14a308 CR3: 000000000adbe003 CR4: 0000000000772ef0
[  185.928247][  T253] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  185.928697][  T253] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  185.929213][  T253] PKRU: 55555554
[  185.929726][  T253] Call Trace:
[  185.930009][  T253]  <TASK>
[ 185.930205][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 185.930596][ T253] ? __warn (kernel/panic.c:748) 
[ 185.930853][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 185.931188][ T253] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 185.931557][ T253] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 185.931781][ T253] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 185.932020][ T253] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 185.932298][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 185.932563][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[ 185.932786][ T253] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 185.933144][ T253] ? _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) 
[ 185.933528][ T253] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 185.933882][ T253] register_netdevice (net/core/dev.c:11033) 
[ 185.934259][ T253] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 185.934613][ T253] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 185.934999][ T253] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 185.935427][ T253] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 185.935904][ T253] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 185.936202][ T253] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 185.936723][ T253] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 185.937204][ T253] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 185.937718][ T253] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 185.938125][ T253] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 185.938617][ T253] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 185.939008][ T253] ? 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)) 
[ 185.939303][ T253] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 185.939659][ T253] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 185.940045][ T253] __driver_probe_device (drivers/base/dd.c:800) 
[ 185.940403][ T253] driver_probe_device (drivers/base/dd.c:830) 
[ 185.940762][ T253] __device_attach_driver (drivers/base/dd.c:959) 
[ 185.941160][ T253] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 185.941600][ T253] bus_for_each_drv (drivers/base/bus.c:462) 
[ 185.941936][ T253] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 185.942352][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 185.942713][ T253] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 185.943083][ T253] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 185.943460][ T253] __device_attach (drivers/base/dd.c:1030) 
[ 185.943818][ T253] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 185.944160][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 185.944521][ T253] ? 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) 
[ 185.944867][ T253] bus_probe_device (drivers/base/bus.c:537) 
[ 185.945243][ T253] device_add (drivers/base/core.c:3672) 
[ 185.945616][ T253] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 185.946017][ T253] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 185.946422][ T253] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 185.946890][ T253] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 185.947340][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 185.947677][ T253] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 185.948046][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 185.948424][ T253] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 185.948769][ T253] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 185.949038][ T253] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 185.949422][ T253] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 185.949747][ T253] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:885) 
[ 185.950163][ T253] ksys_write (fs/read_write.c:731) 
[ 185.950344][ T253] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 185.950595][ T253] ? kernfs_fop_llseek (fs/kernfs/file.c:891) 
[ 185.950836][ T253] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 185.951166][ T253] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  185.951624][  T253] RIP: 0033:0x7f9a039bcb77
[ 185.951991][ T253] 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
[  185.952741][  T253] RSP: 002b:00007ffcb6a01988 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  185.953070][  T253] RAX: ffffffffffffffda RBX: 00007f9a037a2140 RCX: 00007f9a039bcb77
[  185.953393][  T253] RDX: 0000000000000008 RSI: 000055b92f0ade80 RDI: 0000000000000005
[  185.953714][  T253] RBP: 0000000000000008 R08: 0000000000000000 R09: 0000000000000000
[  185.954120][  T253] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f99f563f940
[  185.954457][  T253] R13: 000055b92f0ade80 R14: 0000000000000005 R15: 000055b92ebda910
| [  202.511932][  T253] ------------[ cut here ]------------
| [ 202.512350][ T253] WARNING: CPU: 3 PID: 253 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:10596) 
| [  202.512806][  T253] Modules linked in: cls_bpf sch_ingress netdevsim psample
| [  202.513568][  T253] Tainted: [W]=WARN
[  202.513740][  T253] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 202.514035][ T253] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 202.514349][ T253] Code: 00 e8 13 47 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 5f 99 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 5f 99 00       	call   0x995fb9
  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
[  202.515170][  T253] RSP: 0018:ffffc90000bd7528 EFLAGS: 00010246
[  202.515498][  T253] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  202.515833][  T253] RDX: 0000000000000000 RSI: ffff88801504acd0 RDI: ffff88800b9cd0f8
[  202.516212][  T253] RBP: ffffffff8ac53580 R08: 0000000000000000 R09: fffffbfff1142504
[  202.516597][  T253] R10: ffffffff88a12827 R11: ffff88800b9cc5c0 R12: 0000000000000000
[  202.516938][  T253] R13: ffff88801504a130 R14: ffff88801504a008 R15: ffff88801504a000
[  202.517293][  T253] FS:  00007f9a037a21c0(0000) GS:ffff88806cf80000(0000) knlGS:0000000000000000
[  202.517693][  T253] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  202.517978][  T253] CR2: 00007f99f61e0d60 CR3: 000000000adbe002 CR4: 0000000000772ef0
[  202.518317][  T253] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  202.518852][  T253] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  202.519168][  T253] PKRU: 55555554
[  202.519344][  T253] Call Trace:
[  202.519503][  T253]  <TASK>
[ 202.519613][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 202.519827][ T253] ? __warn (kernel/panic.c:748) 
[ 202.519989][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 202.520197][ T253] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 202.520424][ T253] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 202.520587][ T253] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 202.520802][ T253] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 202.521026][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 202.521251][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[ 202.521466][ T253] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 202.521740][ T253] ? _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) 
[ 202.521958][ T253] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 202.522207][ T253] register_netdevice (net/core/dev.c:11033) 
[ 202.522439][ T253] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 202.522649][ T253] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 202.522873][ T253] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 202.523123][ T253] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 202.523410][ T253] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 202.523595][ T253] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 202.523878][ T253] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 202.524159][ T253] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 202.524444][ T253] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 202.524677][ T253] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 202.524939][ T253] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 202.525168][ T253] ? 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)) 
[ 202.525353][ T253] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 202.525571][ T253] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 202.525788][ T253] __driver_probe_device (drivers/base/dd.c:800) 
[ 202.526014][ T253] driver_probe_device (drivers/base/dd.c:830) 
[ 202.526243][ T253] __device_attach_driver (drivers/base/dd.c:959) 
[ 202.526467][ T253] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 202.526731][ T253] bus_for_each_drv (drivers/base/bus.c:462) 
[ 202.527183][ T253] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 202.527405][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 202.527636][ T253] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 202.527858][ T253] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 202.528071][ T253] __device_attach (drivers/base/dd.c:1030) 
[ 202.528298][ T253] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 202.528517][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 202.528761][ T253] ? 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) 
[ 202.528982][ T253] bus_probe_device (drivers/base/bus.c:537) 
[ 202.529200][ T253] device_add (drivers/base/core.c:3672) 
[ 202.529454][ T253] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 202.529664][ T253] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 202.529898][ T253] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 202.530178][ T253] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 202.530501][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 202.530722][ T253] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 202.530954][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 202.531158][ T253] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 202.531398][ T253] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 202.531574][ T253] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 202.531802][ T253] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 202.532054][ T253] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:885) 
[ 202.532358][ T253] ksys_write (fs/read_write.c:731) 
[ 202.532537][ T253] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 202.532752][ T253] ? kernfs_fop_llseek (fs/kernfs/file.c:891) 
[ 202.532973][ T253] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 202.533204][ T253] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  202.533495][  T253] RIP: 0033:0x7f9a039bcb77
[ 202.533721][ T253] 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
[  202.534471][  T253] RSP: 002b:00007ffcb6a01988 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  202.534791][  T253] RAX: ffffffffffffffda RBX: 00007f9a037a2140 RCX: 00007f9a039bcb77
[  202.535103][  T253] RDX: 0000000000000009 RSI: 000055b92f0ade80 RDI: 0000000000000005
[  202.535454][  T253] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[  202.535831][  T253] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f99f563f940
[  202.536147][  T253] R13: 000055b92f0ade80 R14: 0000000000000005 R15: 000055b92ebda910
| [  233.828924][  T253] ------------[ cut here ]------------
| [ 233.829405][ T253] WARNING: CPU: 3 PID: 253 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:10596) 
| [  233.829861][  T253] Modules linked in: cls_bpf sch_ingress netdevsim psample
| [  233.830684][  T253] Tainted: [W]=WARN
[  233.830859][  T253] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 233.831193][ T253] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 233.831529][ T253] Code: 00 e8 13 47 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 5f 99 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 5f 99 00       	call   0x995fb9
  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
[  233.832397][  T253] RSP: 0018:ffffc90000bd7528 EFLAGS: 00010246
[  233.832666][  T253] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  233.833043][  T253] RDX: 0000000000000000 RSI: ffff88800b4b2cd0 RDI: ffff88800b9cd0f8
[  233.833384][  T253] RBP: ffffffff8ac53580 R08: 0000000000000000 R09: fffffbfff1142504
[  233.833734][  T253] R10: ffffffff88a12827 R11: ffff88800b9cc5c0 R12: 0000000000000000
[  233.834064][  T253] R13: ffff88800b4b2130 R14: ffff88800b4b2008 R15: ffff88800b4b2000
[  233.834399][  T253] FS:  00007f9a037a21c0(0000) GS:ffff88806cf80000(0000) knlGS:0000000000000000
[  233.834803][  T253] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  233.835134][  T253] CR2: 00007fc42efdc960 CR3: 000000000adbe001 CR4: 0000000000772ef0
[  233.835477][  T253] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  233.835801][  T253] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  233.836498][  T253] PKRU: 55555554
[  233.836666][  T253] Call Trace:
[  233.836828][  T253]  <TASK>
[ 233.836945][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 233.837176][ T253] ? __warn (kernel/panic.c:748) 
[ 233.837382][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 233.837598][ T253] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 233.837817][ T253] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 233.838001][ T253] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 233.838251][ T253] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 233.838499][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 233.838730][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[ 233.838966][ T253] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 233.839308][ T253] ? _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) 
[ 233.839552][ T253] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 233.839785][ T253] register_netdevice (net/core/dev.c:11033) 
[ 233.840027][ T253] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 233.840275][ T253] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 233.840523][ T253] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 233.840780][ T253] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 233.841104][ T253] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 233.841294][ T253] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 233.841592][ T253] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 233.841883][ T253] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 233.842170][ T253] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 233.842409][ T253] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 233.842680][ T253] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 233.842944][ T253] ? 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)) 
[ 233.843156][ T253] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 233.843399][ T253] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 233.843654][ T253] __driver_probe_device (drivers/base/dd.c:800) 
[ 233.843871][ T253] driver_probe_device (drivers/base/dd.c:830) 
[ 233.844109][ T253] __device_attach_driver (drivers/base/dd.c:959) 
[ 233.844349][ T253] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 233.844618][ T253] bus_for_each_drv (drivers/base/bus.c:462) 
[ 233.844845][ T253] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 233.845069][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 233.845299][ T253] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 233.845578][ T253] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 233.845801][ T253] __device_attach (drivers/base/dd.c:1030) 
[ 233.846035][ T253] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 233.846256][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 233.846469][ T253] ? 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) 
[ 233.846686][ T253] bus_probe_device (drivers/base/bus.c:537) 
[ 233.846903][ T253] device_add (drivers/base/core.c:3672) 
[ 233.847160][ T253] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 233.847386][ T253] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 233.847610][ T253] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 233.847892][ T253] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 233.848167][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 233.848391][ T253] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 233.848609][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 233.848828][ T253] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 233.849049][ T253] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 233.849238][ T253] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 233.849458][ T253] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 233.849671][ T253] ? 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) 
[ 233.849889][ T253] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 233.850122][ T253] ksys_write (fs/read_write.c:731) 
[ 233.850314][ T253] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 233.850540][ T253] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 233.850775][ T253] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 233.850997][ T253] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  233.851297][  T253] RIP: 0033:0x7f9a039bcb77
[ 233.851516][ T253] 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
[  233.852259][  T253] RSP: 002b:00007ffcb6a01b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  233.852578][  T253] RAX: ffffffffffffffda RBX: 00007f9a037a2140 RCX: 00007f9a039bcb77
[  233.852890][  T253] RDX: 0000000000000009 RSI: 000055b92f0ade80 RDI: 0000000000000005
[  233.853207][  T253] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[  233.853538][  T253] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f99f563f940
[  233.853851][  T253] R13: 000055b92f0ade80 R14: 0000000000000005 R15: 000055b92ebda910
| [  269.039029][  T253] ------------[ cut here ]------------
| [ 269.039515][ T253] WARNING: CPU: 0 PID: 253 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:10596) 
| [  269.040054][  T253] Modules linked in: cls_bpf sch_ingress netdevsim psample
| [  269.041010][  T253] Tainted: [W]=WARN
[  269.041187][  T253] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 269.041517][ T253] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 269.041797][ T253] Code: 00 e8 13 47 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 5f 99 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 5f 99 00       	call   0x995fb9
  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
[  269.042585][  T253] RSP: 0018:ffffc90000bd7528 EFLAGS: 00010246
[  269.042855][  T253] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  269.043460][  T253] RDX: 0000000000000000 RSI: ffff888009ad2cd0 RDI: ffff88800b9cd0f8
[  269.043841][  T253] RBP: ffffffff8ac53580 R08: 0000000000000000 R09: fffffbfff1142504
[  269.044171][  T253] R10: ffffffff88a12827 R11: ffff88800b9cc5c0 R12: 0000000000000000
[  269.044510][  T253] R13: ffff888009ad2130 R14: ffff888009ad2008 R15: ffff888009ad2000
[  269.044882][  T253] FS:  00007f9a037a21c0(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
[  269.045308][  T253] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  269.045612][  T253] CR2: 00007f99f616fc20 CR3: 000000000adbe003 CR4: 0000000000772ef0
[  269.045984][  T253] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  269.046398][  T253] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  269.046775][  T253] PKRU: 55555554
[  269.046965][  T253] Call Trace:
[  269.047149][  T253]  <TASK>
[ 269.047291][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 269.047529][ T253] ? __warn (kernel/panic.c:748) 
[ 269.047724][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 269.047988][ T253] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 269.048253][ T253] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 269.048441][ T253] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 269.048694][ T253] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 269.048954][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 269.049203][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[ 269.049487][ T253] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 269.049801][ T253] ? _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) 
[ 269.050047][ T253] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 269.050337][ T253] register_netdevice (net/core/dev.c:11033) 
[ 269.050587][ T253] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 269.050831][ T253] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 269.051089][ T253] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 269.051363][ T253] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 269.051697][ T253] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 269.051891][ T253] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 269.052252][ T253] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 269.052552][ T253] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 269.052881][ T253] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 269.053169][ T253] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 269.053531][ T253] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 269.053767][ T253] ? 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)) 
[ 269.053947][ T253] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 269.054211][ T253] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 269.054491][ T253] __driver_probe_device (drivers/base/dd.c:800) 
[ 269.054783][ T253] driver_probe_device (drivers/base/dd.c:830) 
[ 269.055042][ T253] __device_attach_driver (drivers/base/dd.c:959) 
[ 269.055342][ T253] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 269.055637][ T253] bus_for_each_drv (drivers/base/bus.c:462) 
[ 269.055902][ T253] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 269.056136][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 269.056425][ T253] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 269.056676][ T253] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 269.056933][ T253] __device_attach (drivers/base/dd.c:1030) 
[ 269.057161][ T253] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 269.057398][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 269.057643][ T253] ? 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) 
[ 269.057877][ T253] bus_probe_device (drivers/base/bus.c:537) 
[ 269.058096][ T253] device_add (drivers/base/core.c:3672) 
[ 269.058340][ T253] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 269.058574][ T253] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 269.058844][ T253] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 269.059123][ T253] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 269.059412][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 269.059650][ T253] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 269.059872][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 269.060124][ T253] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 269.060362][ T253] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 269.060541][ T253] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 269.060759][ T253] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 269.060962][ T253] ? 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) 
[ 269.061188][ T253] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 269.061420][ T253] ksys_write (fs/read_write.c:731) 
[ 269.061590][ T253] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 269.061798][ T253] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 269.062035][ T253] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 269.062380][ T253] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  269.062755][  T253] RIP: 0033:0x7f9a039bcb77
[ 269.062974][ T253] 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
[  269.064060][  T253] RSP: 002b:00007ffcb6a01b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  269.064948][  T253] RAX: ffffffffffffffda RBX: 00007f9a037a2140 RCX: 00007f9a039bcb77
[  269.065504][  T253] RDX: 0000000000000008 RSI: 000055b92f0ade80 RDI: 0000000000000005
[  269.066018][  T253] RBP: 0000000000000008 R08: 0000000000000000 R09: 0000000000000000
[  269.066552][  T253] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f99f563f940
[  269.067331][  T253] R13: 000055b92f0ade80 R14: 0000000000000005 R15: 000055b92ebda910
| [  302.437533][  T253] ------------[ cut here ]------------
| [ 302.437922][ T253] WARNING: CPU: 3 PID: 253 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:10596) 
| [  302.438393][  T253] Modules linked in: cls_bpf sch_ingress netdevsim psample
| [  302.439148][  T253] Tainted: [W]=WARN
[  302.439365][  T253] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 302.439642][ T253] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 302.439960][ T253] Code: 00 e8 13 47 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 5f 99 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 5f 99 00       	call   0x995fb9
  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
[  302.440923][  T253] RSP: 0018:ffffc90000bd7528 EFLAGS: 00010246
[  302.441238][  T253] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  302.441608][  T253] RDX: 0000000000000000 RSI: ffff888015302cd0 RDI: ffff88800b9cd0f8
[  302.441974][  T253] RBP: ffffffff8ac53580 R08: 0000000000000000 R09: fffffbfff1142504
[  302.442347][  T253] R10: ffffffff88a12827 R11: ffff88800b9cc5c0 R12: 0000000000000000
[  302.442732][  T253] R13: ffff888015302130 R14: ffff888015302008 R15: ffff888015302000
[  302.443200][  T253] FS:  00007f9a037a21c0(0000) GS:ffff88806cf80000(0000) knlGS:0000000000000000
[  302.443626][  T253] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  302.443937][  T253] CR2: 00007f99f61e0d60 CR3: 000000000adbe004 CR4: 0000000000772ef0
[  302.444523][  T253] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  302.444887][  T253] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  302.445243][  T253] PKRU: 55555554
[  302.445424][  T253] Call Trace:
[  302.445585][  T253]  <TASK>
[ 302.445706][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 302.445943][ T253] ? __warn (kernel/panic.c:748) 
[ 302.446114][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 302.446357][ T253] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 302.446631][ T253] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 302.446812][ T253] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 302.447044][ T253] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 302.447284][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 302.447502][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[ 302.447715][ T253] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 302.448012][ T253] ? _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) 
[ 302.448243][ T253] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 302.448507][ T253] register_netdevice (net/core/dev.c:11033) 
[ 302.448720][ T253] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 302.448940][ T253] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 302.449178][ T253] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 302.449448][ T253] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 302.449724][ T253] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 302.449889][ T253] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 302.450177][ T253] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 302.450470][ T253] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 302.450754][ T253] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 302.450983][ T253] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 302.451264][ T253] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 302.451489][ T253] ? 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)) 
[ 302.451655][ T253] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 302.451883][ T253] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 302.452099][ T253] __driver_probe_device (drivers/base/dd.c:800) 
[ 302.452369][ T253] driver_probe_device (drivers/base/dd.c:830) 
[ 302.452627][ T253] __device_attach_driver (drivers/base/dd.c:959) 
[ 302.452857][ T253] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 302.453137][ T253] bus_for_each_drv (drivers/base/bus.c:462) 
[ 302.453402][ T253] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 302.453632][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 302.453867][ T253] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 302.454146][ T253] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 302.454396][ T253] __device_attach (drivers/base/dd.c:1030) 
[ 302.454637][ T253] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 302.454865][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 302.455100][ T253] ? 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) 
[ 302.455359][ T253] bus_probe_device (drivers/base/bus.c:537) 
[ 302.455592][ T253] device_add (drivers/base/core.c:3672) 
[ 302.455825][ T253] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 302.456048][ T253] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 302.456299][ T253] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 302.456602][ T253] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 302.456899][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 302.457142][ T253] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 302.457410][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 302.457647][ T253] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 302.457886][ T253] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 302.458070][ T253] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 302.458305][ T253] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 302.458544][ T253] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:885) 
[ 302.458815][ T253] ksys_write (fs/read_write.c:731) 
[ 302.458978][ T253] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 302.459198][ T253] ? kernfs_fop_llseek (fs/kernfs/file.c:891) 
[ 302.459436][ T253] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 302.459669][ T253] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  302.459928][  T253] RIP: 0033:0x7f9a039bcb77
[ 302.460178][ T253] 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
[  302.460920][  T253] RSP: 002b:00007ffcb6a01b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  302.461292][  T253] RAX: ffffffffffffffda RBX: 00007f9a037a2140 RCX: 00007f9a039bcb77
[  302.461659][  T253] RDX: 0000000000000008 RSI: 000055b92f0ade80 RDI: 0000000000000005
[  302.462037][  T253] RBP: 0000000000000008 R08: 0000000000000000 R09: 0000000000000000
[  302.462418][  T253] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f99f563f940
[  302.462766][  T253] R13: 000055b92f0ade80 R14: 0000000000000005 R15: 000055b92ebda910
| [  317.773345][  T253] ------------[ cut here ]------------
| [ 317.773924][ T253] WARNING: CPU: 1 PID: 253 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:10596) 
| [  317.774725][  T253] Modules linked in: cls_bpf sch_ingress netdevsim psample
| [  317.775738][  T253] Tainted: [W]=WARN
[  317.775904][  T253] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 317.776292][ T253] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 317.776563][ T253] Code: 00 e8 13 47 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 5f 99 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 5f 99 00       	call   0x995fb9
  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
[  317.777363][  T253] RSP: 0018:ffffc90000bd7528 EFLAGS: 00010246
[  317.777632][  T253] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  317.777953][  T253] RDX: 0000000000000000 RSI: ffff888015052cd0 RDI: ffff88800b9cd0f8
[  317.778305][  T253] RBP: ffffffff8ac53580 R08: 0000000000000000 R09: fffffbfff1142504
[  317.778627][  T253] R10: ffffffff88a12827 R11: ffff88800b9cc5c0 R12: 0000000000000000
[  317.778943][  T253] R13: ffff888015052130 R14: ffff888015052008 R15: ffff888015052000
[  317.779329][  T253] FS:  00007f9a037a21c0(0000) GS:ffff88806ce80000(0000) knlGS:0000000000000000
[  317.779715][  T253] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  317.779983][  T253] CR2: 00007fc42efdc7d0 CR3: 000000000adbe003 CR4: 0000000000772ef0
[  317.780335][  T253] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  317.780651][  T253] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  317.781257][  T253] PKRU: 55555554
[  317.781432][  T253] Call Trace:
[  317.781592][  T253]  <TASK>
[ 317.781702][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 317.781915][ T253] ? __warn (kernel/panic.c:748) 
[ 317.782098][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 317.782325][ T253] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 317.782552][ T253] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 317.782720][ T253] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 317.782942][ T253] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 317.783194][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 317.783444][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[ 317.783671][ T253] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 317.783947][ T253] ? _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) 
[ 317.784317][ T253] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 317.784564][ T253] register_netdevice (net/core/dev.c:11033) 
[ 317.784795][ T253] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 317.785019][ T253] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 317.785271][ T253] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 317.785517][ T253] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 317.785792][ T253] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 317.785963][ T253] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 317.786280][ T253] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 317.786638][ T253] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 317.786945][ T253] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 317.787210][ T253] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 317.787534][ T253] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 317.787826][ T253] ? 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)) 
[ 317.788119][ T253] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 317.788525][ T253] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 317.788904][ T253] __driver_probe_device (drivers/base/dd.c:800) 
[ 317.789298][ T253] driver_probe_device (drivers/base/dd.c:830) 
[ 317.789657][ T253] __device_attach_driver (drivers/base/dd.c:959) 
[ 317.790007][ T253] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 317.790491][ T253] bus_for_each_drv (drivers/base/bus.c:462) 
[ 317.790871][ T253] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 317.791299][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 317.791669][ T253] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 317.792037][ T253] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 317.792449][ T253] __device_attach (drivers/base/dd.c:1030) 
[ 317.792831][ T253] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 317.793246][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 317.793621][ T253] ? 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) 
[ 317.794008][ T253] bus_probe_device (drivers/base/bus.c:537) 
[ 317.794493][ T253] device_add (drivers/base/core.c:3672) 
[ 317.794850][ T253] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 317.795197][ T253] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 317.795652][ T253] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 317.796139][ T253] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 317.796593][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 317.796869][ T253] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 317.797184][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 317.797427][ T253] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 317.797660][ T253] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 317.797848][ T253] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 317.798093][ T253] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 317.798353][ T253] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:885) 
[ 317.798642][ T253] ksys_write (fs/read_write.c:731) 
[ 317.798816][ T253] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 317.799078][ T253] ? kernfs_fop_llseek (fs/kernfs/file.c:891) 
[ 317.799345][ T253] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 317.799577][ T253] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  317.799853][  T253] RIP: 0033:0x7f9a039bcb77
[ 317.800102][ T253] 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
[  317.800890][  T253] RSP: 002b:00007ffcb6a01b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  317.801249][  T253] RAX: ffffffffffffffda RBX: 00007f9a037a2140 RCX: 00007f9a039bcb77
[  317.801580][  T253] RDX: 0000000000000009 RSI: 000055b92f0ade80 RDI: 0000000000000005
[  317.801911][  T253] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[  317.802276][  T253] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f99f563f940
[  317.802607][  T253] R13: 000055b92f0ade80 R14: 0000000000000005 R15: 000055b92ebda910
| [  331.896523][  T253] ------------[ cut here ]------------
| [ 331.896914][ T253] WARNING: CPU: 0 PID: 253 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:10596) 
| [  331.897465][  T253] Modules linked in: cls_bpf sch_ingress netdevsim psample
| [  331.898317][  T253] Tainted: [W]=WARN
[  331.898505][  T253] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 331.898792][ T253] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 331.899116][ T253] Code: 00 e8 13 47 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 5f 99 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 5f 99 00       	call   0x995fb9
  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
[  331.899953][  T253] RSP: 0018:ffffc90000bd7528 EFLAGS: 00010246
[  331.900247][  T253] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  331.900599][  T253] RDX: 0000000000000000 RSI: ffff888009ad2cd0 RDI: ffff88800b9cd0f8
[  331.900950][  T253] RBP: ffffffff8ac53580 R08: 0000000000000000 R09: fffffbfff1142504
[  331.901368][  T253] R10: ffffffff88a12827 R11: ffff88800b9cc5c0 R12: 0000000000000000
[  331.901757][  T253] R13: ffff888009ad2130 R14: ffff888009ad2008 R15: ffff888009ad2000
[  331.902124][  T253] FS:  00007f9a037a21c0(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
[  331.902606][  T253] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  331.902920][  T253] CR2: 00007f271842c000 CR3: 000000000adbe006 CR4: 0000000000772ef0
[  331.903292][  T253] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  331.903599][  T253] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  331.904136][  T253] PKRU: 55555554
[  331.904309][  T253] Call Trace:
[  331.904516][  T253]  <TASK>
[ 331.904628][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 331.904888][ T253] ? __warn (kernel/panic.c:748) 
[ 331.905062][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 331.905289][ T253] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 331.905515][ T253] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 331.905681][ T253] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 331.905973][ T253] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 331.906291][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 331.906508][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[ 331.906747][ T253] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 331.907032][ T253] ? _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) 
[ 331.907279][ T253] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 331.907499][ T253] register_netdevice (net/core/dev.c:11033) 
[ 331.907725][ T253] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 331.907941][ T253] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 331.908179][ T253] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 331.908426][ T253] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 331.908711][ T253] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 331.908877][ T253] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 331.909164][ T253] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 331.909447][ T253] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 331.909750][ T253] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 331.909992][ T253] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 331.910318][ T253] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 331.910567][ T253] ? 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)) 
[ 331.910765][ T253] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 331.910985][ T253] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 331.911207][ T253] __driver_probe_device (drivers/base/dd.c:800) 
[ 331.911440][ T253] driver_probe_device (drivers/base/dd.c:830) 
[ 331.911654][ T253] __device_attach_driver (drivers/base/dd.c:959) 
[ 331.911878][ T253] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 331.912142][ T253] bus_for_each_drv (drivers/base/bus.c:462) 
[ 331.912380][ T253] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 331.912594][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 331.912819][ T253] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 331.913043][ T253] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 331.913276][ T253] __device_attach (drivers/base/dd.c:1030) 
[ 331.913486][ T253] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 331.913747][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 331.913994][ T253] ? 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) 
[ 331.914245][ T253] bus_probe_device (drivers/base/bus.c:537) 
[ 331.914539][ T253] device_add (drivers/base/core.c:3672) 
[ 331.914824][ T253] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 331.915111][ T253] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 331.915459][ T253] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 331.915950][ T253] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 331.916461][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 331.916832][ T253] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 331.917238][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 331.917576][ T253] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 331.917831][ T253] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 331.918012][ T253] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 331.918264][ T253] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 331.918505][ T253] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:885) 
[ 331.918811][ T253] ksys_write (fs/read_write.c:731) 
[ 331.918983][ T253] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 331.919235][ T253] ? kernfs_fop_llseek (fs/kernfs/file.c:891) 
[ 331.919474][ T253] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 331.919712][ T253] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  331.919987][  T253] RIP: 0033:0x7f9a039bcb77
[ 331.920256][ T253] 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
[  331.921052][  T253] RSP: 002b:00007ffcb6a01b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  331.921451][  T253] RAX: ffffffffffffffda RBX: 00007f9a037a2140 RCX: 00007f9a039bcb77
[  331.921805][  T253] RDX: 0000000000000008 RSI: 000055b92f0ade80 RDI: 0000000000000005
[  331.922137][  T253] RBP: 0000000000000008 R08: 0000000000000000 R09: 0000000000000000
[  331.922506][  T253] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f99f563f940
[  331.922865][  T253] R13: 000055b92f0ade80 R14: 0000000000000005 R15: 000055b92ebda910
| [  345.664614][  T253] ------------[ cut here ]------------
| [ 345.665017][ T253] WARNING: CPU: 3 PID: 253 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:10596) 
| [  345.665552][  T253] Modules linked in: cls_bpf sch_ingress netdevsim psample
| [  345.666339][  T253] Tainted: [W]=WARN
[  345.666520][  T253] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 345.666805][ T253] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 345.667110][ T253] Code: 00 e8 13 47 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 5f 99 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 5f 99 00       	call   0x995fb9
  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
[  345.667920][  T253] RSP: 0018:ffffc90000bd7528 EFLAGS: 00010246
[  345.668229][  T253] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  345.668586][  T253] RDX: 0000000000000000 RSI: ffff888015302cd0 RDI: ffff88800b9cd0f8
[  345.668942][  T253] RBP: ffffffff8ac53580 R08: 0000000000000000 R09: fffffbfff1142504
[  345.669308][  T253] R10: ffffffff88a12827 R11: ffff88800b9cc5c0 R12: 0000000000000000
[  345.669663][  T253] R13: ffff888015302130 R14: ffff888015302008 R15: ffff888015302000
[  345.670333][  T253] FS:  00007f9a037a21c0(0000) GS:ffff88806cf80000(0000) knlGS:0000000000000000
[  345.670742][  T253] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  345.671041][  T253] CR2: 00007f9a03e25090 CR3: 000000000adbe003 CR4: 0000000000772ef0
[  345.671400][  T253] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  345.671743][  T253] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  345.672063][  T253] PKRU: 55555554
[  345.672248][  T253] Call Trace:
[  345.672473][  T253]  <TASK>
[ 345.672597][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 345.672838][ T253] ? __warn (kernel/panic.c:748) 
[ 345.673023][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 345.673322][ T253] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 345.673599][ T253] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 345.673777][ T253] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 345.674037][ T253] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 345.674333][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 345.674636][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[ 345.674915][ T253] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 345.675269][ T253] ? _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) 
[ 345.675537][ T253] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 345.675795][ T253] register_netdevice (net/core/dev.c:11033) 
[ 345.676064][ T253] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 345.676339][ T253] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 345.676617][ T253] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 345.676893][ T253] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 345.677270][ T253] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 345.677469][ T253] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 345.677777][ T253] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 345.678115][ T253] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 345.678405][ T253] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 345.678692][ T253] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 345.679024][ T253] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 345.679300][ T253] ? 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)) 
[ 345.679499][ T253] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 345.679777][ T253] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 345.680038][ T253] __driver_probe_device (drivers/base/dd.c:800) 
[ 345.680306][ T253] driver_probe_device (drivers/base/dd.c:830) 
[ 345.680560][ T253] __device_attach_driver (drivers/base/dd.c:959) 
[ 345.680816][ T253] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 345.681127][ T253] bus_for_each_drv (drivers/base/bus.c:462) 
[ 345.681394][ T253] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 345.681651][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 345.681903][ T253] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 345.682155][ T253] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 345.682422][ T253] __device_attach (drivers/base/dd.c:1030) 
[ 345.682681][ T253] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 345.682931][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 345.683185][ T253] ? 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) 
[ 345.683465][ T253] bus_probe_device (drivers/base/bus.c:537) 
[ 345.683721][ T253] device_add (drivers/base/core.c:3672) 
[ 345.683976][ T253] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 345.684237][ T253] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 345.684526][ T253] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 345.684853][ T253] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 345.685183][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 345.685464][ T253] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 345.685726][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 345.685979][ T253] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 345.686249][ T253] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 345.686458][ T253] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 345.686717][ T253] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 345.686973][ T253] ? 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) 
[ 345.687257][ T253] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 345.687531][ T253] ksys_write (fs/read_write.c:731) 
[ 345.687728][ T253] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 345.687977][ T253] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 345.688252][ T253] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 345.688513][ T253] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  345.688826][  T253] RIP: 0033:0x7f9a039bcb77
[ 345.689088][ T253] 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
[  345.689980][  T253] RSP: 002b:00007ffcb6a01b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  345.690378][  T253] RAX: ffffffffffffffda RBX: 00007f9a037a2140 RCX: 00007f9a039bcb77
[  345.690754][  T253] RDX: 0000000000000009 RSI: 000055b92f0ade80 RDI: 0000000000000005
[  345.691136][  T253] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[  345.691527][  T253] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f99f563f940
[  345.691907][  T253] R13: 000055b92f0ade80 R14: 0000000000000005 R15: 000055b92ebda910
| [  345.715254][  T253] ------------[ cut here ]------------
| [ 345.715719][ T253] WARNING: CPU: 1 PID: 253 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:10596) 
| [  345.716462][  T253] Modules linked in: cls_bpf sch_ingress netdevsim psample
| [  345.717263][  T253] Tainted: [W]=WARN
[  345.717425][  T253] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 345.717872][ T253] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 345.718331][ T253] Code: 00 e8 13 47 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 5f 99 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 5f 99 00       	call   0x995fb9
  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
[  345.719296][  T253] RSP: 0018:ffffc90000bd7528 EFLAGS: 00010246
[  345.719769][  T253] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  345.720330][  T253] RDX: 0000000000000000 RSI: ffff88800b4bacd0 RDI: ffff88800b9cd0f8
[  345.720870][  T253] RBP: ffffffff8ac53580 R08: 0000000000000000 R09: fffffbfff1142504
[  345.721318][  T253] R10: ffffffff88a12827 R11: ffff88800b9cc5c0 R12: 0000000000000000
[  345.721856][  T253] R13: ffff88800b4ba130 R14: ffff88800b4ba008 R15: ffff88800b4ba000
[  345.722303][  T253] FS:  00007f9a037a21c0(0000) GS:ffff88806ce80000(0000) knlGS:0000000000000000
[  345.722742][  T253] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  345.723044][  T253] CR2: 00007f99f55ec840 CR3: 000000000adbe003 CR4: 0000000000772ef0
[  345.723378][  T253] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  345.723706][  T253] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  345.724055][  T253] PKRU: 55555554
[  345.724251][  T253] Call Trace:
[  345.724437][  T253]  <TASK>
[ 345.724546][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 345.724812][ T253] ? __warn (kernel/panic.c:748) 
[ 345.724998][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 345.725241][ T253] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 345.725461][ T253] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 345.725622][ T253] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 345.725856][ T253] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 345.726099][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 345.726326][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[ 345.726567][ T253] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 345.726867][ T253] ? _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) 
[ 345.727084][ T253] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 345.727307][ T253] register_netdevice (net/core/dev.c:11033) 
[ 345.727522][ T253] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 345.727764][ T253] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 345.727997][ T253] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 345.728234][ T253] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 345.728504][ T253] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 345.728670][ T253] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 345.728955][ T253] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 345.729240][ T253] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 345.729522][ T253] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 345.729773][ T253] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 345.730036][ T253] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 345.730257][ T253] ? 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)) 
[ 345.730423][ T253] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 345.730652][ T253] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 345.730900][ T253] __driver_probe_device (drivers/base/dd.c:800) 
[ 345.731120][ T253] driver_probe_device (drivers/base/dd.c:830) 
[ 345.731353][ T253] __device_attach_driver (drivers/base/dd.c:959) 
[ 345.731585][ T253] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 345.731878][ T253] bus_for_each_drv (drivers/base/bus.c:462) 
[ 345.732100][ T253] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 345.732339][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 345.732552][ T253] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 345.732804][ T253] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 345.733025][ T253] __device_attach (drivers/base/dd.c:1030) 
[ 345.733265][ T253] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 345.733493][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 345.733716][ T253] ? 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) 
[ 345.733969][ T253] bus_probe_device (drivers/base/bus.c:537) 
[ 345.734198][ T253] device_add (drivers/base/core.c:3672) 
[ 345.734441][ T253] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 345.734656][ T253] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 345.734918][ T253] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 345.735197][ T253] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 345.735486][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 345.735728][ T253] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 345.735955][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 345.736181][ T253] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 345.736423][ T253] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 345.736604][ T253] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 345.736859][ T253] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 345.737071][ T253] ? 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) 
[ 345.737308][ T253] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 345.737528][ T253] ksys_write (fs/read_write.c:731) 
[ 345.737694][ T253] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 345.737954][ T253] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 345.738189][ T253] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 345.738440][ T253] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  345.738730][  T253] RIP: 0033:0x7f9a039bcb77
[ 345.738953][ T253] 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
[  345.739734][  T253] RSP: 002b:00007ffcb6a01b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  345.740060][  T253] RAX: ffffffffffffffda RBX: 00007f9a037a2140 RCX: 00007f9a039bcb77
[  345.740400][  T253] RDX: 0000000000000009 RSI: 000055b92f0ade80 RDI: 0000000000000005
[  345.740766][  T253] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[  345.741284][  T253] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f99f563f940
[  345.741752][  T253] R13: 000055b92f0ade80 R14: 0000000000000005 R15: 000055b92ebda910
| [  345.754124][  T253] ------------[ cut here ]------------
| [ 345.754491][ T253] WARNING: CPU: 2 PID: 253 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:10596) 
| [  345.754967][  T253] Modules linked in: cls_bpf sch_ingress netdevsim psample
| [  345.755775][  T253] Tainted: [W]=WARN
[  345.755964][  T253] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 345.756264][ T253] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 345.756562][ T253] Code: 00 e8 13 47 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 5f 99 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 5f 99 00       	call   0x995fb9
  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
[  345.757366][  T253] RSP: 0018:ffffc90000bd7528 EFLAGS: 00010246
[  345.757670][  T253] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  345.758021][  T253] RDX: 0000000000000000 RSI: ffff88801504acd0 RDI: ffff88800b9cd0f8
[  345.758381][  T253] RBP: ffffffff8ac53580 R08: 0000000000000000 R09: fffffbfff1142504
[  345.758733][  T253] R10: ffffffff88a12827 R11: ffff88800b9cc5c0 R12: 0000000000000000
[  345.759090][  T253] R13: ffff88801504a130 R14: ffff88801504a008 R15: ffff88801504a000
[  345.759452][  T253] FS:  00007f9a037a21c0(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
[  345.759853][  T253] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  345.760149][  T253] CR2: 00007fc42f29dd40 CR3: 000000000adbe001 CR4: 0000000000772ef0
[  345.760514][  T253] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  345.760858][  T253] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  345.761204][  T253] PKRU: 55555554
[  345.761407][  T253] Call Trace:
[  345.761591][  T253]  <TASK>
[ 345.761722][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 345.761971][ T253] ? __warn (kernel/panic.c:748) 
[ 345.762176][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 345.762425][ T253] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 345.762660][ T253] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 345.762846][ T253] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 345.763084][ T253] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 345.763356][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 345.763599][ T253] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[ 345.763846][ T253] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 345.764140][ T253] ? _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) 
[ 345.764411][ T253] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 345.764658][ T253] register_netdevice (net/core/dev.c:11033) 
[ 345.764890][ T253] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 345.765126][ T253] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 345.765402][ T253] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 345.765647][ T253] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 345.765932][ T253] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 345.766123][ T253] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 345.766438][ T253] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 345.766724][ T253] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 345.767013][ T253] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 345.767288][ T253] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 345.767581][ T253] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 345.767825][ T253] ? 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)) 
[ 345.768015][ T253] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 345.768269][ T253] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 345.768543][ T253] __driver_probe_device (drivers/base/dd.c:800) 
[ 345.768788][ T253] driver_probe_device (drivers/base/dd.c:830) 
[ 345.769041][ T253] __device_attach_driver (drivers/base/dd.c:959) 
[ 345.769287][ T253] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 345.769580][ T253] bus_for_each_drv (drivers/base/bus.c:462) 
[ 345.769810][ T253] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 345.770029][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 345.770262][ T253] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 345.770508][ T253] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 345.770750][ T253] __device_attach (drivers/base/dd.c:1030) 
[ 345.770995][ T253] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 345.771238][ T253] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 345.771479][ T253] ? 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) 
[ 345.771730][ T253] bus_probe_device (drivers/base/bus.c:537) 
[ 345.771975][ T253] device_add (drivers/base/core.c:3672) 
[ 345.772201][ T253] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 345.772450][ T253] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 345.772756][ T253] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 345.773045][ T253] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 345.773340][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 345.773593][ T253] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 345.774049][ T253] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 345.774294][ T253] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 345.774552][ T253] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 345.774744][ T253] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 345.775113][ T253] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 345.775346][ T253] ? 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) 
[ 345.775585][ T253] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 345.775830][ T253] ksys_write (fs/read_write.c:731) 
[ 345.776182][ T253] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 345.776422][ T253] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 345.776657][ T253] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 345.776928][ T253] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  345.777342][  T253] RIP: 0033:0x7f9a039bcb77
[ 345.777587][ T253] 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
[  345.778493][  T253] RSP: 002b:00007ffcb6a01b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  345.778832][  T253] RAX: ffffffffffffffda RBX: 00007f9a037a2140 RCX: 00007f9a039bcb77
[  345.779352][  T253] RDX: 0000000000000009 RSI: 000055b92f0ade80 RDI: 0000000000000005
[  345.779681][  T253] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[  345.780039][  T253] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f99f563f940


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