======================================
| 0
| xx__-> [ 4173.849764][ T4965] ------------[ cut here ]------------
| [ 4173.850205][ T4965] WARNING: CPU: 2 PID: 4965 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) 
| [ 4173.850812][ T4965] Modules linked in: netdevsim psample cls_matchall geneve ip6_gre ip_gre gre sha1_generic xfrm_user xt_policy nft_compat nf_tables act_gact cls_flower sch_ingress vxlan
[ 4173.851901][ T4965] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4173.852199][ T4965] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4173.852487][ T4965] 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
[ 4173.853219][ T4965] RSP: 0018:ffffc90000477528 EFLAGS: 00010246
[ 4173.853505][ T4965] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4173.853828][ T4965] RDX: 0000000000000000 RSI: ffff88801405acd0 RDI: ffff8880099cd0f8
[ 4173.854170][ T4965] RBP: ffff88800cb30040 R08: 0000000000000000 R09: fffffbfff4e82504
[ 4173.854492][ T4965] R10: ffffffffa7412827 R11: ffff8880099cc5c0 R12: 0000000000000000
[ 4173.854820][ T4965] R13: ffff88801405a130 R14: ffff88801405a008 R15: ffff88801405a000
[ 4173.855154][ T4965] FS:  00007f9a621c9740(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
[ 4173.855529][ T4965] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4173.855803][ T4965] CR2: 00007fdf407fa960 CR3: 0000000013dde005 CR4: 0000000000772ef0
[ 4173.856140][ T4965] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4173.856470][ T4965] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4173.856788][ T4965] PKRU: 55555554
[ 4173.856963][ T4965] Call Trace:
[ 4173.857171][ T4965]  <TASK>
[ 4173.857300][ T4965] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4173.857522][ T4965] ? __warn (kernel/panic.c:748) 
[ 4173.857695][ T4965] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4173.857923][ T4965] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 4173.858169][ T4965] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 4173.858342][ T4965] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 4173.858562][ T4965] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 4173.858798][ T4965] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4173.859032][ T4965] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 4173.859260][ T4965] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 4173.859540][ T4965] ? _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) 
[ 4173.859772][ T4965] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 4173.860014][ T4965] register_netdevice (net/core/dev.c:11003) 
[ 4173.860245][ T4965] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 4173.860459][ T4965] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 4173.860699][ T4965] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 4173.860941][ T4965] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 4173.861234][ T4965] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 4173.861408][ T4965] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 4173.861696][ T4965] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 4173.862000][ T4965] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 4173.862283][ T4965] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 4173.862520][ T4965] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 4173.862798][ T4965] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 4173.863032][ T4965] ? 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)) 
[ 4173.863206][ T4965] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 4173.863435][ T4965] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 4173.863663][ T4965] __driver_probe_device (drivers/base/dd.c:800) 
[ 4173.863887][ T4965] driver_probe_device (drivers/base/dd.c:830) 
[ 4173.864124][ T4965] __device_attach_driver (drivers/base/dd.c:959) 
[ 4173.864349][ T4965] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 4173.864618][ T4965] bus_for_each_drv (drivers/base/bus.c:462) 
[ 4173.864841][ T4965] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 4173.865068][ T4965] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 4173.865288][ T4965] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 4173.865504][ T4965] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 4173.865734][ T4965] __device_attach (drivers/base/dd.c:1030) 
[ 4173.865954][ T4965] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 4173.866190][ T4965] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 4173.866409][ T4965] ? 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) 
[ 4173.866636][ T4965] bus_probe_device (drivers/base/bus.c:537) 
[ 4173.866859][ T4965] device_add (drivers/base/core.c:3672) 
[ 4173.867099][ T4965] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 4173.867318][ T4965] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 4173.867556][ T4965] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 4173.867834][ T4965] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 4173.868130][ T4965] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 4173.868345][ T4965] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 4173.868571][ T4965] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 4173.868790][ T4965] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 4173.869035][ T4965] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 4173.869215][ T4965] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 4173.869437][ T4965] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 4173.869655][ T4965] ? 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) 
[ 4173.869883][ T4965] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 4173.870128][ T4965] ksys_write (fs/read_write.c:731) 
[ 4173.870299][ T4965] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 4173.870517][ T4965] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 4173.870749][ T4965] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 4173.870972][ T4965] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4173.871254][ T4965] RIP: 0033:0x7f9a6230ab77
[ 4173.871483][ T4965] 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
[ 4173.872229][ T4965] RSP: 002b:00007ffe47e7d5c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4173.872551][ T4965] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f9a6230ab77
[ 4173.872870][ T4965] RDX: 0000000000000007 RSI: 000055ba9733e2f0 RDI: 0000000000000001
[ 4173.873204][ T4965] RBP: 000055ba9733e2f0 R08: 0000000000000006 R09: 0000000000000077
[ 4173.873533][ T4965] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000007
[ 4173.873854][ T4965] R13: 00007f9a623c6760 R14: 0000000000000007 R15: 00007f9a623c19c0
| [ 4188.862095][ T5007] ------------[ cut here ]------------
| [ 4188.862440][ T5007] WARNING: CPU: 0 PID: 5007 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) 
| [ 4188.863008][ T5007] Modules linked in: drop_monitor netdevsim psample cls_matchall geneve ip6_gre ip_gre gre sha1_generic xfrm_user xt_policy nft_compat nf_tables act_gact cls_flower sch_ingress vxlan
| [ 4188.864150][ T5007] Tainted: [W]=WARN
[ 4188.864355][ T5007] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4188.864614][ T5007] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4188.864886][ T5007] 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
[ 4188.865601][ T5007] RSP: 0018:ffffc900004f7528 EFLAGS: 00010246
[ 4188.865860][ T5007] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4188.866177][ T5007] RDX: 0000000000000000 RSI: ffff88800b43acd0 RDI: ffff88800c46d0f8
[ 4188.866481][ T5007] RBP: ffff88800cb338c0 R08: 0000000000000000 R09: fffffbfff4e82504
[ 4188.866783][ T5007] R10: ffffffffa7412827 R11: ffff88800c46c5c0 R12: 0000000000000000
[ 4188.867098][ T5007] R13: ffff88800b43a130 R14: ffff88800b43a008 R15: ffff88800b43a000
[ 4188.867406][ T5007] FS:  00007fef8b996740(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
[ 4188.867759][ T5007] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4188.868025][ T5007] CR2: 0000557bae1062f8 CR3: 0000000010f16006 CR4: 0000000000772ef0
[ 4188.868330][ T5007] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4188.868632][ T5007] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4188.868938][ T5007] PKRU: 55555554
[ 4188.869102][ T5007] Call Trace:
[ 4188.869258][ T5007]  <TASK>
[ 4188.869370][ T5007] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4188.869575][ T5007] ? __warn (kernel/panic.c:748) 
[ 4188.869734][ T5007] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4188.869942][ T5007] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 4188.870162][ T5007] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 4188.870326][ T5007] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 4188.870536][ T5007] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 4188.870757][ T5007] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4188.870963][ T5007] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 4188.871192][ T5007] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 4188.871456][ T5007] ? _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) 
[ 4188.871667][ T5007] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 4188.871896][ T5007] register_netdevice (net/core/dev.c:11003) 
[ 4188.872115][ T5007] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 4188.872318][ T5007] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 4188.872538][ T5007] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 4188.872758][ T5007] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 4188.873037][ T5007] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 4188.873205][ T5007] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 4188.873474][ T5007] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 4188.873738][ T5007] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 4188.874015][ T5007] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 4188.874233][ T5007] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 4188.874492][ T5007] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 4188.874703][ T5007] ? 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)) 
[ 4188.874864][ T5007] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 4188.875092][ T5007] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 4188.875306][ T5007] __driver_probe_device (drivers/base/dd.c:800) 
[ 4188.875514][ T5007] driver_probe_device (drivers/base/dd.c:830) 
[ 4188.875720][ T5007] __device_attach_driver (drivers/base/dd.c:959) 
[ 4188.875928][ T5007] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 4188.876196][ T5007] bus_for_each_drv (drivers/base/bus.c:462) 
[ 4188.876408][ T5007] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 4188.876610][ T5007] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 4188.876816][ T5007] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 4188.877028][ T5007] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 4188.877241][ T5007] __device_attach (drivers/base/dd.c:1030) 
[ 4188.877448][ T5007] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 4188.877656][ T5007] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 4188.877863][ T5007] ? 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) 
[ 4188.878090][ T5007] bus_probe_device (drivers/base/bus.c:537) 
[ 4188.878300][ T5007] device_add (drivers/base/core.c:3672) 
[ 4188.878511][ T5007] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 4188.878716][ T5007] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 4188.878934][ T5007] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 4188.879215][ T5007] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 4188.879483][ T5007] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 4188.879686][ T5007] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 4188.879898][ T5007] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 4188.880107][ T5007] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 4188.880320][ T5007] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 4188.880487][ T5007] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 4188.880701][ T5007] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 4188.880905][ T5007] ? 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) 
[ 4188.881129][ T5007] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 4188.881342][ T5007] ksys_write (fs/read_write.c:731) 
[ 4188.881501][ T5007] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 4188.881705][ T5007] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 4188.881932][ T5007] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 4188.882159][ T5007] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4188.882419][ T5007] RIP: 0033:0x7fef8bad7b77
[ 4188.882635][ T5007] 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
[ 4188.883350][ T5007] RSP: 002b:00007ffdde5be9f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4188.883666][ T5007] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fef8bad7b77
[ 4188.883968][ T5007] RDX: 0000000000000007 RSI: 0000557bae1052f0 RDI: 0000000000000001
[ 4188.884280][ T5007] RBP: 0000557bae1052f0 R08: 0000000000000006 R09: 0000000000000077
[ 4188.884583][ T5007] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000007


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