======================================
| 0
| xx__-> [  494.185878][ T6050] ------------[ cut here ]------------
| [ 494.186213][ T6050] WARNING: CPU: 1 PID: 6050 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) 
| [  494.186750][ T6050] Modules linked in: netdevsim psample unix_diag
[  494.187339][ T6050] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 494.187611][ T6050] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 494.187937][ T6050] 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
[  494.188666][ T6050] RSP: 0018:ffffc90000597528 EFLAGS: 00010246
[  494.188926][ T6050] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  494.189231][ T6050] RDX: 0000000000000000 RSI: ffff888012a02cd0 RDI: ffff888011b9ae38
[  494.189544][ T6050] RBP: ffff88800bc70040 R08: 0000000000000000 R09: fffffbfff2782504
[  494.189849][ T6050] R10: ffffffff93c12827 R11: ffff888011b9a300 R12: 0000000000000000
[  494.190156][ T6050] R13: ffff888012a02130 R14: ffff888012a02008 R15: ffff888012a02000
[  494.190468][ T6050] FS:  00007fe5e8dd3740(0000) GS:ffff88806ce80000(0000) knlGS:0000000000000000
[  494.190819][ T6050] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  494.191076][ T6050] CR2: 00007f9cd7af9960 CR3: 000000001003a005 CR4: 0000000000772ef0
[  494.191384][ T6050] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  494.191695][ T6050] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  494.191999][ T6050] PKRU: 55555554
[  494.192157][ T6050] Call Trace:
[  494.192318][ T6050]  <TASK>
[ 494.192442][ T6050] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 494.192652][ T6050] ? __warn (kernel/panic.c:748) 
[ 494.192816][ T6050] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 494.193021][ T6050] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 494.193230][ T6050] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 494.193386][ T6050] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 494.193599][ T6050] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 494.193818][ T6050] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 494.194021][ T6050] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 494.194234][ T6050] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 494.194503][ T6050] ? _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) 
[ 494.194712][ T6050] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 494.194923][ T6050] register_netdevice (net/core/dev.c:11003) 
[ 494.195136][ T6050] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 494.195336][ T6050] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 494.195561][ T6050] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 494.195785][ T6050] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 494.196045][ T6050] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 494.196205][ T6050] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 494.196480][ T6050] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 494.196741][ T6050] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 494.197003][ T6050] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 494.197223][ T6050] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 494.197487][ T6050] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 494.197692][ T6050] ? 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)) 
[ 494.197846][ T6050] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 494.198076][ T6050] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 494.198285][ T6050] __driver_probe_device (drivers/base/dd.c:800) 
[ 494.198500][ T6050] driver_probe_device (drivers/base/dd.c:830) 
[ 494.198710][ T6050] __device_attach_driver (drivers/base/dd.c:959) 
[ 494.198916][ T6050] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 494.199163][ T6050] bus_for_each_drv (drivers/base/bus.c:462) 
[ 494.199368][ T6050] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 494.199577][ T6050] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 494.199781][ T6050] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 494.199982][ T6050] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 494.200198][ T6050] __device_attach (drivers/base/dd.c:1030) 
[ 494.200402][ T6050] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 494.200614][ T6050] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 494.200818][ T6050] ? 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) 
[ 494.201028][ T6050] bus_probe_device (drivers/base/bus.c:537) 
[ 494.201237][ T6050] device_add (drivers/base/core.c:3672) 
[ 494.201453][ T6050] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 494.201659][ T6050] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 494.201874][ T6050] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 494.202137][ T6050] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 494.202415][ T6050] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 494.202618][ T6050] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 494.202828][ T6050] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 494.203029][ T6050] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 494.203243][ T6050] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 494.203414][ T6050] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 494.203623][ T6050] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 494.203823][ T6050] ? 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) 
[ 494.204035][ T6050] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 494.204244][ T6050] ksys_write (fs/read_write.c:731) 
[ 494.204401][ T6050] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 494.204614][ T6050] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 494.204828][ T6050] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 494.205033][ T6050] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  494.205281][ T6050] RIP: 0033:0x7fe5e8f14b77
[ 494.205502][ T6050] 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
[  494.206203][ T6050] RSP: 002b:00007ffe0aa34fb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  494.206519][ T6050] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fe5e8f14b77
[  494.206822][ T6050] RDX: 0000000000000007 RSI: 000055b6e213d2f0 RDI: 0000000000000001
[  494.207130][ T6050] RBP: 000055b6e213d2f0 R08: 0000000000000006 R09: 0000000000000077
[  494.207447][ T6050] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000007
[  494.207752][ T6050] R13: 00007fe5e8fd0760 R14: 0000000000000007 R15: 00007fe5e8fcb9c0
| [  509.106357][ T6098] ------------[ cut here ]------------
| [ 509.106690][ T6098] WARNING: CPU: 1 PID: 6098 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) 
| [  509.107103][ T6098] Modules linked in: drop_monitor act_gact cls_flower sch_ingress netdevsim psample unix_diag
| [  509.107923][ T6098] Tainted: [W]=WARN
[  509.108103][ T6098] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 509.108358][ T6098] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 509.108631][ T6098] 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
[  509.109489][ T6098] RSP: 0018:ffffc90000637528 EFLAGS: 00010246
[  509.109749][ T6098] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  509.110047][ T6098] RDX: 0000000000000000 RSI: ffff88800e21acd0 RDI: ffff88800ae9d0f8
[  509.110348][ T6098] RBP: ffff88800bc71c80 R08: 0000000000000000 R09: fffffbfff2782504
[  509.110664][ T6098] R10: ffffffff93c12827 R11: ffff88800ae9c5c0 R12: 0000000000000000
[  509.110968][ T6098] R13: ffff88800e21a130 R14: ffff88800e21a008 R15: ffff88800e21a000
[  509.111270][ T6098] FS:  00007f97ad5da740(0000) GS:ffff88806ce80000(0000) knlGS:0000000000000000
[  509.111643][ T6098] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  509.111897][ T6098] CR2: 000055b1497132f8 CR3: 0000000007dbc006 CR4: 0000000000772ef0
[  509.112198][ T6098] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  509.112610][ T6098] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  509.112916][ T6098] PKRU: 55555554
[  509.113071][ T6098] Call Trace:
[  509.113230][ T6098]  <TASK>
[ 509.113338][ T6098] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 509.113638][ T6098] ? __warn (kernel/panic.c:748) 
[ 509.113820][ T6098] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 509.114024][ T6098] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 509.114237][ T6098] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 509.114393][ T6098] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 509.114691][ T6098] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 509.114910][ T6098] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 509.115113][ T6098] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 509.115323][ T6098] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 509.115695][ T6098] ? _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) 
[ 509.115907][ T6098] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 509.116116][ T6098] register_netdevice (net/core/dev.c:11003) 
[ 509.116325][ T6098] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 509.116628][ T6098] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 509.116846][ T6098] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 509.117069][ T6098] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 509.117334][ T6098] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 509.117584][ T6098] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 509.117852][ T6098] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 509.118111][ T6098] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 509.118373][ T6098] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 509.118629][ T6098] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 509.118888][ T6098] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 509.119092][ T6098] ? 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)) 
[ 509.119254][ T6098] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 509.119488][ T6098] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 509.119710][ T6098] __driver_probe_device (drivers/base/dd.c:800) 
[ 509.119916][ T6098] driver_probe_device (drivers/base/dd.c:830) 
[ 509.120123][ T6098] __device_attach_driver (drivers/base/dd.c:959) 
[ 509.120330][ T6098] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 509.120590][ T6098] bus_for_each_drv (drivers/base/bus.c:462) 
[ 509.120796][ T6098] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 509.120997][ T6098] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 509.121203][ T6098] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 509.121403][ T6098] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 509.121626][ T6098] __device_attach (drivers/base/dd.c:1030) 
[ 509.121828][ T6098] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 509.122029][ T6098] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 509.122247][ T6098] ? 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) 
[ 509.122477][ T6098] bus_probe_device (drivers/base/bus.c:537) 
[ 509.122685][ T6098] device_add (drivers/base/core.c:3672) 
[ 509.122890][ T6098] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 509.123095][ T6098] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 509.123310][ T6098] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 509.123594][ T6098] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 509.123860][ T6098] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 509.124060][ T6098] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 509.124268][ T6098] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 509.124481][ T6098] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 509.124695][ T6098] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 509.124857][ T6098] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 509.125065][ T6098] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 509.125264][ T6098] ? 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) 
[ 509.125486][ T6098] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 509.125694][ T6098] ksys_write (fs/read_write.c:731) 
[ 509.125850][ T6098] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 509.126050][ T6098] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 509.126267][ T6098] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 509.126481][ T6098] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  509.126730][ T6098] RIP: 0033:0x7f97ad71bb77
[ 509.126936][ T6098] 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
[  509.127652][ T6098] RSP: 002b:00007fffce1cd588 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  509.127954][ T6098] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f97ad71bb77
[  509.128253][ T6098] RDX: 0000000000000007 RSI: 000055b1497122f0 RDI: 0000000000000001
[  509.128563][ T6098] RBP: 000055b1497122f0 R08: 0000000000000006 R09: 0000000000000077
[  509.128865][ T6098] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000007


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