======================================
| 0
| xx__-> [    9.595292][  T245] ------------[ cut here ]------------
| [ 9.595620][ T245] WARNING: CPU: 3 PID: 245 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) 
| [    9.596070][  T245] Modules linked in: netdevsim
[    9.596676][  T245] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.596934][ T245] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 9.597209][ T245] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   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 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[    9.597913][  T245] RSP: 0018:ffffc900004c7520 EFLAGS: 00010246
[    9.598183][  T245] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.598489][  T245] RDX: 0000000000000000 RSI: ffff88800bde2c98 RDI: ffff88800a37ae38
[    9.598793][  T245] RBP: ffff88800b0d8040 R08: 0000000000000000 R09: fffffbfff187d844
[    9.599110][  T245] R10: ffffffff8c3ec227 R11: ffff88800a37a300 R12: 0000000000000000
[    9.599413][  T245] R13: ffff88800bde2128 R14: ffff88800bde2008 R15: ffff88800bde2000
[    9.599715][  T245] FS:  00007efc51f76740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[    9.600072][  T245] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.600328][  T245] CR2: 0000564ee1a1f2f8 CR3: 0000000008b7a002 CR4: 0000000000772ef0
[    9.600631][  T245] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.600936][  T245] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.601246][  T245] PKRU: 55555554
[    9.601402][  T245] Call Trace:
[    9.601556][  T245]  <TASK>
[ 9.601666][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 9.601871][ T245] ? __warn (kernel/panic.c:748) 
[ 9.602036][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 9.602240][ T245] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.602447][ T245] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.602601][ T245] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.602807][ T245] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.603032][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 9.603244][ T245] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 9.603503][ T245] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 9.603711][ T245] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.603918][ T245] register_netdevice (net/core/dev.c:11033) 
[ 9.604144][ T245] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 9.604359][ T245] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.604575][ T245] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.604833][ T245] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.604989][ T245] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.605264][ T245] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.605522][ T245] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.605782][ T245] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.606006][ T245] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.606270][ T245] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.606477][ T245] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 9.606630][ T245] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.606842][ T245] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.607062][ T245] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.607269][ T245] driver_probe_device (drivers/base/dd.c:830) 
[ 9.607471][ T245] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.607677][ T245] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.607923][ T245] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.608137][ T245] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.608337][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.608541][ T245] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.608743][ T245] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.608952][ T245] __device_attach (drivers/base/dd.c:1030) 
[ 9.609165][ T245] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.609368][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.609578][ T245] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 9.609795][ T245] bus_probe_device (drivers/base/bus.c:537) 
[ 9.610009][ T245] device_add (drivers/base/core.c:3672) 
[ 9.610216][ T245] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.610416][ T245] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.610628][ T245] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.610890][ T245] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.611163][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.611369][ T245] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.611577][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.611779][ T245] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.611988][ T245] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.612160][ T245] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.612370][ T245] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.612569][ T245] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.612784][ T245] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.612994][ T245] ksys_write (fs/read_write.c:731) 
[ 9.613159][ T245] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.613360][ T245] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.613572][ T245] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.613784][ T245] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.614042][  T245] RIP: 0033:0x7efc520b7b77
[ 9.614253][ T245] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[    9.614960][  T245] RSP: 002b:00007ffc272e0838 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.615274][  T245] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007efc520b7b77
[    9.615578][  T245] RDX: 0000000000000005 RSI: 0000564ee1a1e2f0 RDI: 0000000000000001
[    9.615882][  T245] RBP: 0000564ee1a1e2f0 R08: 0000000000000004 R09: 0000000000000077
[    9.616199][  T245] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.616502][  T245] R13: 00007efc52173760 R14: 0000000000000005 R15: 00007efc5216e9c0
| [    9.628360][  T245] ------------[ cut here ]------------
| [ 9.628580][ T245] WARNING: CPU: 3 PID: 245 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) 
| [    9.628975][  T245] Modules linked in: netdevsim
| [    9.630392][  T245] Tainted: [W]=WARN
[    9.630550][  T245] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.630797][ T245] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 9.631150][ T245] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   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 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[    9.631849][  T245] RSP: 0018:ffffc900004c7520 EFLAGS: 00010246
[    9.632197][  T245] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.632496][  T245] RDX: 0000000000000000 RSI: ffff88800a342c98 RDI: ffff88800a37ae38
[    9.632792][  T245] RBP: ffff88800b0d8040 R08: 0000000000000000 R09: fffffbfff187d844
[    9.633188][  T245] R10: ffffffff8c3ec227 R11: ffff88800a37a300 R12: 0000000000000000
[    9.633486][  T245] R13: ffff88800a342128 R14: ffff88800a342008 R15: ffff88800a342000
[    9.633783][  T245] FS:  00007efc51f76740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[    9.634222][  T245] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.634478][  T245] CR2: 0000564ee1a1f2f8 CR3: 0000000008b7a002 CR4: 0000000000772ef0
[    9.634777][  T245] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.635163][  T245] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.635458][  T245] PKRU: 55555554
[    9.635609][  T245] Call Trace:
[    9.635760][  T245]  <TASK>
[ 9.635869][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 9.636169][ T245] ? __warn (kernel/panic.c:748) 
[ 9.636326][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 9.636529][ T245] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.636739][ T245] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.636893][ T245] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.637186][ T245] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.637401][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 9.637619][ T245] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 9.637876][ T245] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 9.638175][ T245] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.638384][ T245] register_netdevice (net/core/dev.c:11033) 
[ 9.638590][ T245] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 9.638804][ T245] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.639114][ T245] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.639374][ T245] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.639530][ T245] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.639795][ T245] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.640150][ T245] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.640410][ T245] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.640636][ T245] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.640894][ T245] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.641191][ T245] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 9.641346][ T245] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.641555][ T245] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.641764][ T245] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.641969][ T245] driver_probe_device (drivers/base/dd.c:830) 
[ 9.642268][ T245] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.642474][ T245] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.642721][ T245] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.642927][ T245] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.643216][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.643421][ T245] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.643622][ T245] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.643835][ T245] __device_attach (drivers/base/dd.c:1030) 
[ 9.644131][ T245] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.644333][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.644534][ T245] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 9.644743][ T245] bus_probe_device (drivers/base/bus.c:537) 
[ 9.644950][ T245] device_add (drivers/base/core.c:3672) 
[ 9.645252][ T245] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.645457][ T245] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.645673][ T245] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.645934][ T245] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.646311][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.646513][ T245] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.646722][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.646922][ T245] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.647229][ T245] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.647394][ T245] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.647602][ T245] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.647806][ T245] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.648111][ T245] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.648321][ T245] ksys_write (fs/read_write.c:731) 
[ 9.648480][ T245] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.648679][ T245] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.648897][ T245] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.649201][ T245] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.649450][  T245] RIP: 0033:0x7efc520b7b77
[ 9.649657][ T245] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[    9.650449][  T245] RSP: 002b:00007ffc272e0838 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.650752][  T245] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007efc520b7b77
[    9.651149][  T245] RDX: 0000000000000005 RSI: 0000564ee1a1e2f0 RDI: 0000000000000001
[    9.651448][  T245] RBP: 0000564ee1a1e2f0 R08: 0000000000000004 R09: 0000000000000077
[    9.651749][  T245] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.652145][  T245] R13: 00007efc52173760 R14: 0000000000000005 R15: 00007efc5216e9c0
| [    9.663796][  T245] ------------[ cut here ]------------
| [ 9.664058][ T245] WARNING: CPU: 2 PID: 245 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) 
| [    9.664473][  T245] Modules linked in: netdevsim
| [    9.665167][  T245] Tainted: [W]=WARN
[    9.665348][  T245] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.665618][ T245] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 9.665890][ T245] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   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 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[    9.666645][  T245] RSP: 0018:ffffc900004c7520 EFLAGS: 00010246
[    9.666924][  T245] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.667252][  T245] RDX: 0000000000000000 RSI: ffff888009212c98 RDI: ffff88800a37ae38
[    9.667564][  T245] RBP: ffff88800b0d8040 R08: 0000000000000000 R09: fffffbfff187d844
[    9.667874][  T245] R10: ffffffff8c3ec227 R11: ffff88800a37a300 R12: 0000000000000000
[    9.668202][  T245] R13: ffff888009212128 R14: ffff888009212008 R15: ffff888009212000
[    9.668517][  T245] FS:  00007efc51f76740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.668875][  T245] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.669152][  T245] CR2: 00007fced1cd66f0 CR3: 0000000008b7a005 CR4: 0000000000772ef0
[    9.669465][  T245] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.669782][  T245] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.670104][  T245] PKRU: 55555554
[    9.670271][  T245] Call Trace:
[    9.670444][  T245]  <TASK>
[ 9.670561][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 9.670775][ T245] ? __warn (kernel/panic.c:748) 
[ 9.670944][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 9.671175][ T245] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.671398][ T245] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.671563][ T245] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.671779][ T245] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.672015][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 9.672242][ T245] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 9.672515][ T245] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 9.672741][ T245] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.672960][ T245] register_netdevice (net/core/dev.c:11033) 
[ 9.673192][ T245] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 9.673423][ T245] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.673655][ T245] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.673925][ T245] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.674105][ T245] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.674387][ T245] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.674660][ T245] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.674932][ T245] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.675170][ T245] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.675436][ T245] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.675656][ T245] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 9.675827][ T245] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.676059][ T245] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.676298][ T245] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.676515][ T245] driver_probe_device (drivers/base/dd.c:830) 
[ 9.676729][ T245] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.676946][ T245] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.677217][ T245] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.677437][ T245] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.677650][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.677864][ T245] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.678087][ T245] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.678307][ T245] __device_attach (drivers/base/dd.c:1030) 
[ 9.678524][ T245] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.678735][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.678956][ T245] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 9.679188][ T245] bus_probe_device (drivers/base/bus.c:537) 
[ 9.679407][ T245] device_add (drivers/base/core.c:3672) 
[ 9.679626][ T245] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.679840][ T245] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.680077][ T245] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.680352][ T245] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.680632][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.680845][ T245] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.681080][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.681295][ T245] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.681516][ T245] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.681689][ T245] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.681912][ T245] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.682136][ T245] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.682362][ T245] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.682585][ T245] ksys_write (fs/read_write.c:731) 
[ 9.682757][ T245] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.682970][ T245] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.683208][ T245] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.683424][ T245] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.683692][  T245] RIP: 0033:0x7efc520b7b77
[ 9.683913][ T245] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[    9.684624][  T245] RSP: 002b:00007ffc272e0838 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.684943][  T245] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007efc520b7b77
[    9.685270][  T245] RDX: 0000000000000005 RSI: 0000564ee1a1e2f0 RDI: 0000000000000001
[    9.685582][  T245] RBP: 0000564ee1a1e2f0 R08: 0000000000000004 R09: 0000000000000077
[    9.685892][  T245] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[    9.686231][  T245] R13: 00007efc52173760 R14: 0000000000000005 R15: 00007efc5216e9c0
| [    9.699433][  T245] ------------[ cut here ]------------
| [ 9.699672][ T245] WARNING: CPU: 2 PID: 245 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) 
| [    9.700109][  T245] Modules linked in: netdevsim
| [    9.700695][  T245] Tainted: [W]=WARN
[    9.700865][  T245] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 9.701136][ T245] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 9.701407][ T245] Code: 00 e8 b3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 b8 56 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   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 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[    9.702124][  T245] RSP: 0018:ffffc900004c7520 EFLAGS: 00010246
[    9.702389][  T245] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[    9.702701][  T245] RDX: 0000000000000000 RSI: ffff88800afe2c98 RDI: ffff88800a37ae38
[    9.703028][  T245] RBP: ffff88800b0d8040 R08: 0000000000000000 R09: fffffbfff187d844
[    9.703338][  T245] R10: ffffffff8c3ec227 R11: ffff88800a37a300 R12: 0000000000000000
[    9.703649][  T245] R13: ffff88800afe2128 R14: ffff88800afe2008 R15: ffff88800afe2000
[    9.703956][  T245] FS:  00007efc51f76740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[    9.704331][  T245] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    9.704597][  T245] CR2: 00007fced1cd66f0 CR3: 0000000008b7a005 CR4: 0000000000772ef0
[    9.704904][  T245] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    9.705231][  T245] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    9.705546][  T245] PKRU: 55555554
[    9.705711][  T245] Call Trace:
[    9.705874][  T245]  <TASK>
[ 9.705993][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 9.706241][ T245] ? __warn (kernel/panic.c:748) 
[ 9.706412][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 9.706628][ T245] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 9.706853][ T245] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 9.707032][ T245] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 9.707250][ T245] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 9.707478][ T245] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 9.707703][ T245] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 9.707976][ T245] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 9.708208][ T245] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 9.708430][ T245] register_netdevice (net/core/dev.c:11033) 
[ 9.708650][ T245] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 9.708884][ T245] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 9.709125][ T245] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 9.709399][ T245] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 9.709567][ T245] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 9.709848][ T245] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 9.710129][ T245] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 9.710407][ T245] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 9.710635][ T245] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 9.710908][ T245] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 9.711144][ T245] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 9.711315][ T245] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 9.711539][ T245] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 9.711761][ T245] __driver_probe_device (drivers/base/dd.c:800) 
[ 9.711983][ T245] driver_probe_device (drivers/base/dd.c:830) 
[ 9.712215][ T245] __device_attach_driver (drivers/base/dd.c:959) 
[ 9.712437][ T245] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 9.712695][ T245] bus_for_each_drv (drivers/base/bus.c:462) 
[ 9.712912][ T245] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 9.713137][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.713354][ T245] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 9.713571][ T245] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 9.713793][ T245] __device_attach (drivers/base/dd.c:1030) 
[ 9.714018][ T245] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 9.714234][ T245] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 9.714450][ T245] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 9.714674][ T245] bus_probe_device (drivers/base/bus.c:537) 
[ 9.714896][ T245] device_add (drivers/base/core.c:3672) 
[ 9.715139][ T245] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 9.715354][ T245] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 9.715584][ T245] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 9.715859][ T245] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 9.716155][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.716372][ T245] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 9.716595][ T245] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 9.716811][ T245] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 9.717046][ T245] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 9.717220][ T245] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 9.717439][ T245] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 9.717653][ T245] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.717875][ T245] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 9.718111][ T245] ksys_write (fs/read_write.c:731) 
[ 9.718283][ T245] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 9.718497][ T245] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 9.718721][ T245] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 9.718937][ T245] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[    9.719207][  T245] RIP: 0033:0x7efc520b7b77
[ 9.719430][ T245] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[    9.720153][  T245] RSP: 002b:00007ffc272e0838 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[    9.720468][  T245] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007efc520b7b77
[    9.720780][  T245] RDX: 0000000000000005 RSI: 0000564ee1a1e2f0 RDI: 0000000000000001
[    9.721106][  T245] RBP: 0000564ee1a1e2f0 R08: 0000000000000004 R09: 0000000000000077
[    9.721416][  T245] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005


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