======================================
| 0
| xx__-> [ 4152.568200][ T4395] ------------[ cut here ]------------
| [ 4152.568701][ T4395] WARNING: CPU: 2 PID: 4395 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) 
| [ 4152.569365][ T4395] Modules linked in: netdevsim psample vxcan can_dev xfrm_interface macsec ipvlan nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 cls_matchall act_gact cls_flower sch_ingress geneve ip6_gre ip_gre gre xt_HL amt ip6t_rpfilter nft_compat nf_tables vxlan mpls_gso mpls_iptunnel mpls_router
[ 4152.570847][ T4395] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4152.571117][ T4395] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4152.571410][ T4395] 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
[ 4152.572183][ T4395] RSP: 0018:ffffc9000036f528 EFLAGS: 00010246
[ 4152.572479][ T4395] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4152.572806][ T4395] RDX: 0000000000000000 RSI: ffff88801bdf2cd0 RDI: ffff888014fc50f8
[ 4152.573118][ T4395] RBP: ffff8880024a5500 R08: 0000000000000000 R09: fffffbfff2d42504
[ 4152.573446][ T4395] R10: ffffffff96a12827 R11: ffff888014fc45c0 R12: 0000000000000000
[ 4152.573762][ T4395] R13: ffff88801bdf2130 R14: ffff88801bdf2008 R15: ffff88801bdf2000
[ 4152.574074][ T4395] FS:  00007f6b04d2b740(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
[ 4152.574446][ T4395] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4152.574742][ T4395] CR2: 00007f6bc3483960 CR3: 0000000015b64006 CR4: 0000000000772ef0
[ 4152.575070][ T4395] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4152.575398][ T4395] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4152.575726][ T4395] PKRU: 55555554
[ 4152.575901][ T4395] Call Trace:
[ 4152.576077][ T4395]  <TASK>
[ 4152.576200][ T4395] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4152.576450][ T4395] ? __warn (kernel/panic.c:748) 
[ 4152.576627][ T4395] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4152.576846][ T4395] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 4152.577077][ T4395] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 4152.577276][ T4395] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 4152.577499][ T4395] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 4152.577734][ T4395] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4152.577957][ T4395] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 4152.578187][ T4395] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 4152.578487][ T4395] ? _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) 
[ 4152.578706][ T4395] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 4152.578953][ T4395] register_netdevice (net/core/dev.c:11003) 
[ 4152.579182][ T4395] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 4152.579407][ T4395] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 4152.579645][ T4395] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 4152.579879][ T4395] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 4152.580158][ T4395] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 4152.580341][ T4395] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 4152.580625][ T4395] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 4152.580901][ T4395] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 4152.581187][ T4395] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 4152.581430][ T4395] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 4152.581742][ T4395] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 4152.581965][ T4395] ? 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)) 
[ 4152.582138][ T4395] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 4152.582378][ T4395] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 4152.582608][ T4395] __driver_probe_device (drivers/base/dd.c:800) 
[ 4152.582837][ T4395] driver_probe_device (drivers/base/dd.c:830) 
[ 4152.583059][ T4395] __device_attach_driver (drivers/base/dd.c:959) 
[ 4152.583289][ T4395] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 4152.583558][ T4395] bus_for_each_drv (drivers/base/bus.c:462) 
[ 4152.583779][ T4395] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 4152.583998][ T4395] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 4152.584216][ T4395] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 4152.584454][ T4395] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 4152.584680][ T4395] __device_attach (drivers/base/dd.c:1030) 
[ 4152.584898][ T4395] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 4152.585115][ T4395] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 4152.585344][ T4395] ? 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) 
[ 4152.585573][ T4395] bus_probe_device (drivers/base/bus.c:537) 
[ 4152.585794][ T4395] device_add (drivers/base/core.c:3672) 
[ 4152.586022][ T4395] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 4152.586239][ T4395] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 4152.586483][ T4395] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 4152.586764][ T4395] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 4152.587049][ T4395] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 4152.587275][ T4395] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 4152.587503][ T4395] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 4152.587725][ T4395] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 4152.587951][ T4395] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 4152.588130][ T4395] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 4152.588364][ T4395] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 4152.588574][ T4395] ? 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) 
[ 4152.588800][ T4395] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 4152.589028][ T4395] ksys_write (fs/read_write.c:731) 
[ 4152.589206][ T4395] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 4152.589437][ T4395] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 4152.589667][ T4395] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 4152.589891][ T4395] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4152.590155][ T4395] RIP: 0033:0x7f6b04e6cb77
[ 4152.590394][ T4395] 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
[ 4152.591116][ T4395] RSP: 002b:00007ffca5217d58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4152.591457][ T4395] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f6b04e6cb77
[ 4152.591808][ T4395] RDX: 0000000000000007 RSI: 000055de059442f0 RDI: 0000000000000001
[ 4152.592129][ T4395] RBP: 000055de059442f0 R08: 0000000000000006 R09: 0000000000000077
[ 4152.592462][ T4395] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000007
[ 4152.592825][ T4395] R13: 00007f6b04f28760 R14: 0000000000000007 R15: 00007f6b04f239c0
| [ 4167.535446][ T4437] ------------[ cut here ]------------
| [ 4167.535823][ T4437] WARNING: CPU: 2 PID: 4437 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) 
| [ 4167.536242][ T4437] Modules linked in: drop_monitor netdevsim psample vxcan can_dev xfrm_interface macsec ipvlan nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 cls_matchall act_gact cls_flower sch_ingress geneve ip6_gre ip_gre gre xt_HL amt ip6t_rpfilter nft_compat nf_tables vxlan mpls_gso mpls_iptunnel mpls_router
| [ 4167.538000][ T4437] Tainted: [W]=WARN
[ 4167.538194][ T4437] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4167.538515][ T4437] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4167.538790][ T4437] 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
[ 4167.539507][ T4437] RSP: 0018:ffffc90000527528 EFLAGS: 00010246
[ 4167.539774][ T4437] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4167.540103][ T4437] RDX: 0000000000000000 RSI: ffff88801c112cd0 RDI: ffff88801f9fae38
[ 4167.540424][ T4437] RBP: ffff8880024a0040 R08: 0000000000000000 R09: fffffbfff2d42504
[ 4167.540733][ T4437] R10: ffffffff96a12827 R11: ffff88801f9fa300 R12: 0000000000000000
[ 4167.541039][ T4437] R13: ffff88801c112130 R14: ffff88801c112008 R15: ffff88801c112000
[ 4167.541364][ T4437] FS:  00007f4dc2726740(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
[ 4167.541799][ T4437] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4167.542067][ T4437] CR2: 00005622967f52f8 CR3: 000000001c0d2005 CR4: 0000000000772ef0
[ 4167.542402][ T4437] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4167.542727][ T4437] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4167.543067][ T4437] PKRU: 55555554
[ 4167.543235][ T4437] Call Trace:
[ 4167.543414][ T4437]  <TASK>
[ 4167.543534][ T4437] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4167.543748][ T4437] ? __warn (kernel/panic.c:748) 
[ 4167.543914][ T4437] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4167.544130][ T4437] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 4167.544367][ T4437] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 4167.544540][ T4437] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 4167.544754][ T4437] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 4167.544982][ T4437] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4167.545195][ T4437] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 4167.545428][ T4437] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 4167.545694][ T4437] ? _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) 
[ 4167.545913][ T4437] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 4167.546139][ T4437] register_netdevice (net/core/dev.c:11003) 
[ 4167.546374][ T4437] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 4167.546590][ T4437] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 4167.546817][ T4437] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 4167.547048][ T4437] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 4167.547331][ T4437] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 4167.547506][ T4437] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 4167.547780][ T4437] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 4167.548066][ T4437] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 4167.548365][ T4437] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 4167.548591][ T4437] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 4167.548855][ T4437] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 4167.549075][ T4437] ? 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)) 
[ 4167.549285][ T4437] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 4167.549509][ T4437] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 4167.549726][ T4437] __driver_probe_device (drivers/base/dd.c:800) 
[ 4167.549944][ T4437] driver_probe_device (drivers/base/dd.c:830) 
[ 4167.550158][ T4437] __device_attach_driver (drivers/base/dd.c:959) 
[ 4167.550389][ T4437] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 4167.550657][ T4437] bus_for_each_drv (drivers/base/bus.c:462) 
[ 4167.550876][ T4437] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 4167.551086][ T4437] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 4167.551314][ T4437] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 4167.551589][ T4437] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 4167.551815][ T4437] __device_attach (drivers/base/dd.c:1030) 
[ 4167.552034][ T4437] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 4167.552258][ T4437] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 4167.552497][ T4437] ? 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) 
[ 4167.552732][ T4437] bus_probe_device (drivers/base/bus.c:537) 
[ 4167.552950][ T4437] device_add (drivers/base/core.c:3672) 
[ 4167.553184][ T4437] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 4167.553421][ T4437] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 4167.553645][ T4437] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 4167.553924][ T4437] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 4167.554196][ T4437] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 4167.554424][ T4437] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 4167.554644][ T4437] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 4167.554856][ T4437] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 4167.555074][ T4437] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 4167.555248][ T4437] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 4167.555485][ T4437] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 4167.555700][ T4437] ? 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) 
[ 4167.555920][ T4437] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 4167.556141][ T4437] ksys_write (fs/read_write.c:731) 
[ 4167.556321][ T4437] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 4167.556536][ T4437] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 4167.556759][ T4437] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 4167.556974][ T4437] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4167.557241][ T4437] RIP: 0033:0x7f4dc2867b77
[ 4167.557473][ T4437] 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
[ 4167.558172][ T4437] RSP: 002b:00007ffcc1dfe0e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4167.558504][ T4437] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f4dc2867b77
[ 4167.558816][ T4437] RDX: 0000000000000007 RSI: 00005622967f42f0 RDI: 0000000000000001
[ 4167.559124][ T4437] RBP: 00005622967f42f0 R08: 0000000000000006 R09: 0000000000000077
[ 4167.559446][ T4437] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000007


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