======================================
| 0
| xx__-> [   10.376155][  T251] ------------[ cut here ]------------
| [ 10.376598][ T251] WARNING: CPU: 3 PID: 251 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   10.377211][  T251] Modules linked in: netdevsim psample
[   10.377857][  T251] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.378163][ T251] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.378448][ T251] Code: 00 e8 d3 48 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 3b 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:	d3 48 fe             	rorl   %cl,-0x2(%rax)
   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 3b 99 00       	call   0x993bb9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   10.379218][  T251] RSP: 0018:ffffc90000bc7528 EFLAGS: 00010246
[   10.379500][  T251] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.379866][  T251] RDX: 0000000000000000 RSI: ffff888005c52cd0 RDI: ffff88800a070b78
[   10.380197][  T251] RBP: ffffffffba653580 R08: 0000000000000000 R09: fffffbfff7082504
[   10.380525][  T251] R10: ffffffffb8412827 R11: ffff88800a070040 R12: 0000000000000000
[   10.380870][  T251] R13: ffff888005c52130 R14: ffff888005c52008 R15: ffff888005c52000
[   10.381206][  T251] FS:  00007f953bc49740(0000) GS:ffff88806cf80000(0000) knlGS:0000000000000000
[   10.381590][  T251] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.381898][  T251] CR2: 0000562460813f88 CR3: 00000000062f6003 CR4: 0000000000772ef0
[   10.382233][  T251] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.382569][  T251] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.382907][  T251] PKRU: 55555554
[   10.383078][  T251] Call Trace:
[   10.383247][  T251]  <TASK>
[ 10.383364][ T251] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.383588][ T251] ? __warn (kernel/panic.c:748) 
[ 10.383774][ T251] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.384000][ T251] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.384234][ T251] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.384405][ T251] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.384627][ T251] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.384876][ T251] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.385099][ T251] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 10.385327][ T251] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.385609][ T251] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 10.385854][ T251] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.386081][ T251] register_netdevice (net/core/dev.c:11003) 
[ 10.386311][ T251] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.386527][ T251] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 10.386770][ T251] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.387013][ T251] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.387305][ T251] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 10.387479][ T251] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.387773][ T251] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.388054][ T251] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 10.388338][ T251] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 10.388569][ T251] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 10.388865][ T251] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 10.389085][ T251] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 10.389254][ T251] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 10.389481][ T251] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 10.389721][ T251] __driver_probe_device (drivers/base/dd.c:800) 
[ 10.389942][ T251] driver_probe_device (drivers/base/dd.c:830) 
[ 10.390162][ T251] __device_attach_driver (drivers/base/dd.c:959) 
[ 10.390389][ T251] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 10.390658][ T251] bus_for_each_drv (drivers/base/bus.c:462) 
[ 10.390890][ T251] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 10.391107][ T251] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.391327][ T251] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.391545][ T251] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 10.391782][ T251] __device_attach (drivers/base/dd.c:1030) 
[ 10.392008][ T251] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 10.392231][ T251] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.392452][ T251] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 10.392677][ T251] bus_probe_device (drivers/base/bus.c:537) 
[ 10.392913][ T251] device_add (drivers/base/core.c:3672) 
[ 10.393137][ T251] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 10.393355][ T251] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 10.393590][ T251] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 10.393893][ T251] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 10.394181][ T251] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.394398][ T251] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.394626][ T251] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.394850][ T251] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.395077][ T251] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.395258][ T251] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.395481][ T251] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 10.395709][ T251] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.395940][ T251] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 10.396167][ T251] ksys_write (fs/read_write.c:731) 
[ 10.396339][ T251] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.396556][ T251] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.396795][ T251] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.397028][ T251] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.397300][  T251] RIP: 0033:0x7f953bd8ab77
[ 10.397531][ T251] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   10.398313][  T251] RSP: 002b:00007ffe2e218918 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.398650][  T251] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f953bd8ab77
[   10.398989][  T251] RDX: 0000000000000004 RSI: 0000562460812f80 RDI: 0000000000000001
[   10.399317][  T251] RBP: 0000562460812f80 R08: 0000000000000003 R09: 0000000000000000
[   10.399641][  T251] R10: 0000000000000020 R11: 0000000000000246 R12: 0000000000000004
[   10.399984][  T251] R13: 00007f953be46760 R14: 0000000000000004 R15: 00007f953be419c0
| [   10.420646][  T251] ------------[ cut here ]------------
| [ 10.421099][ T251] WARNING: CPU: 1 PID: 251 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   10.421516][  T251] Modules linked in: netdevsim psample
| [   10.422165][  T251] Tainted: [W]=WARN
[   10.422345][  T251] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.422611][ T251] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.422886][ T251] Code: 00 e8 d3 48 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 3b 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:	d3 48 fe             	rorl   %cl,-0x2(%rax)
   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 3b 99 00       	call   0x993bb9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   10.423622][  T251] RSP: 0018:ffffc90000bc7528 EFLAGS: 00010246
[   10.423898][  T251] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.424203][  T251] RDX: 0000000000000000 RSI: ffff888005c5acd0 RDI: ffff88800a070b78
[   10.424511][  T251] RBP: ffffffffba653580 R08: 0000000000000000 R09: fffffbfff7082504
[   10.424834][  T251] R10: ffffffffb8412827 R11: ffff88800a070040 R12: 0000000000000000
[   10.425142][  T251] R13: ffff888005c5a130 R14: ffff888005c5a008 R15: ffff888005c5a000
[   10.425446][  T251] FS:  00007f953bc49740(0000) GS:ffff88806ce80000(0000) knlGS:0000000000000000
[   10.425811][  T251] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.426073][  T251] CR2: 000055e61471be08 CR3: 00000000062f6002 CR4: 0000000000772ef0
[   10.426379][  T251] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.426682][  T251] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.427004][  T251] PKRU: 55555554
[   10.427162][  T251] Call Trace:
[   10.427319][  T251]  <TASK>
[ 10.427430][ T251] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.427635][ T251] ? __warn (kernel/panic.c:748) 
[ 10.427808][ T251] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.428019][ T251] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.428232][ T251] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.428390][ T251] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.428594][ T251] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.428835][ T251] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.429086][ T251] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 10.429297][ T251] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.429557][ T251] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 10.429785][ T251] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.430000][ T251] register_netdevice (net/core/dev.c:11003) 
[ 10.430211][ T251] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.430419][ T251] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 10.430639][ T251] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.430870][ T251] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.431135][ T251] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 10.431295][ T251] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.431562][ T251] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.431837][ T251] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 10.432101][ T251] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 10.432316][ T251] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 10.432575][ T251] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 10.432793][ T251] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 10.432951][ T251] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 10.433166][ T251] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 10.433385][ T251] __driver_probe_device (drivers/base/dd.c:800) 
[ 10.433592][ T251] driver_probe_device (drivers/base/dd.c:830) 
[ 10.433808][ T251] __device_attach_driver (drivers/base/dd.c:959) 
[ 10.434018][ T251] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 10.434268][ T251] bus_for_each_drv (drivers/base/bus.c:462) 
[ 10.434475][ T251] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 10.434676][ T251] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.434897][ T251] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.435102][ T251] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 10.435311][ T251] __device_attach (drivers/base/dd.c:1030) 
[ 10.435515][ T251] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 10.435726][ T251] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.435930][ T251] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 10.436141][ T251] bus_probe_device (drivers/base/bus.c:537) 
[ 10.436355][ T251] device_add (drivers/base/core.c:3672) 
[ 10.436561][ T251] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 10.436776][ T251] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 10.437001][ T251] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 10.437267][ T251] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 10.437533][ T251] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.437748][ T251] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.437977][ T251] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.438179][ T251] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.438390][ T251] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.438557][ T251] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.438775][ T251] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 10.438987][ T251] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.439200][ T251] ksys_write (fs/read_write.c:731) 
[ 10.439360][ T251] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.439576][ T251] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.439797][ T251] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.440049][  T251] RIP: 0033:0x7f953bd8ab77
[ 10.440258][ T251] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   10.440964][  T251] RSP: 002b:00007ffe2e218918 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.441266][  T251] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f953bd8ab77
[   10.441565][  T251] RDX: 0000000000000004 RSI: 0000562460812f80 RDI: 0000000000000001
[   10.441874][  T251] RBP: 0000562460812f80 R08: 0000000000000000 R09: 00007f953bdfd4e0
[   10.442179][  T251] R10: 00007f953bdfd3e0 R11: 0000000000000246 R12: 0000000000000004


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