======================================
| [ 3658.351085][T26400] Initializing XFRM netlink socket
| [ 3661.028035][T23189] ------------[ cut here ]------------
| [3661.028514][T23189] WARNING: CPU: 3 PID: 23189 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) 
| [ 3661.028936][T23189] Modules linked in: netdevsim psample xfrm_user macsec ip6_gre ip_gre gre cls_u32 sch_htb xt_mark sch_ingress act_mirred cls_basic sch_fq_codel xt_HL amt ip6t_rpfilter nft_compat nf_tables vxlan mpls_gso mpls_iptunnel mpls_router
[ 3661.030496][T23189] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[3661.030757][T23189] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 3661.031025][T23189] 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
[ 3661.031749][T23189] RSP: 0018:ffffc900021ef528 EFLAGS: 00010246
[ 3661.032019][T23189] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 3661.032327][T23189] RDX: 0000000000000000 RSI: ffff888012822cd0 RDI: ffff888009ecae38
[ 3661.032651][T23189] RBP: ffffffffb9053580 R08: 0000000000000000 R09: fffffbfff6dc2504
[ 3661.032960][T23189] R10: ffffffffb6e12827 R11: ffff888009eca300 R12: 0000000000000000
[ 3661.033276][T23189] R13: ffff888012822130 R14: ffff888012822008 R15: ffff888012822000
[ 3661.033595][T23189] FS:  00007fbaf917c740(0000) GS:ffff88806cf80000(0000) knlGS:0000000000000000
[ 3661.033951][T23189] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3661.034211][T23189] CR2: 00007f423619f7a0 CR3: 0000000012cc4003 CR4: 0000000000772ef0
[ 3661.034539][T23189] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3661.034855][T23189] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3661.035161][T23189] PKRU: 55555554
[ 3661.035322][T23189] Call Trace:
[ 3661.035492][T23189]  <TASK>
[3661.035604][T23189] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[3661.035813][T23189] ? __warn (kernel/panic.c:748) 
[3661.035975][T23189] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[3661.036184][T23189] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[3661.036395][T23189] ? handle_bug (arch/x86/kernel/traps.c:285) 
[3661.036564][T23189] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[3661.036771][T23189] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[3661.036991][T23189] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[3661.037197][T23189] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[3661.037410][T23189] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[3661.037689][T23189] ? _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) 
[3661.037902][T23189] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[3661.038114][T23189] register_netdevice (net/core/dev.c:11003) 
[3661.038331][T23189] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[3661.038545][T23189] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[3661.038765][T23189] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[3661.038988][T23189] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[3661.039253][T23189] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[3661.039413][T23189] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[3661.039693][T23189] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[3661.039960][T23189] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[3661.040228][T23189] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[3661.040474][T23189] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[3661.040752][T23189] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[3661.040961][T23189] ? 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)) 
[3661.041118][T23189] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[3661.041332][T23189] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[3661.041557][T23189] __driver_probe_device (drivers/base/dd.c:800) 
[3661.041766][T23189] driver_probe_device (drivers/base/dd.c:830) 
[3661.041979][T23189] __device_attach_driver (drivers/base/dd.c:959) 
[3661.042189][T23189] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[3661.042455][T23189] bus_for_each_drv (drivers/base/bus.c:462) 
[3661.042665][T23189] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[3661.042871][T23189] ? bus_to_subsys (drivers/base/bus.c:85) 
[3661.043079][T23189] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[3661.043285][T23189] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[3661.043511][T23189] __device_attach (drivers/base/dd.c:1030) 
[3661.043721][T23189] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[3661.043927][T23189] ? bus_to_subsys (drivers/base/bus.c:85) 
[3661.044132][T23189] ? 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) 
[3661.044345][T23189] bus_probe_device (drivers/base/bus.c:537) 
[3661.044563][T23189] device_add (drivers/base/core.c:3672) 
[3661.044774][T23189] ? __pfx_device_add (drivers/base/core.c:3548) 
[3661.044983][T23189] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[3661.045201][T23189] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[3661.045477][T23189] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[3661.045749][T23189] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[3661.045953][T23189] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[3661.046167][T23189] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[3661.046371][T23189] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[3661.046601][T23189] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[3661.046768][T23189] ? __pfx_vfs_write (fs/read_write.c:660) 
[3661.046981][T23189] ? __lock_release (kernel/locking/lockdep.c:5527) 
[3661.047184][T23189] ? 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) 
[3661.047401][T23189] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[3661.047623][T23189] ksys_write (fs/read_write.c:731) 
[3661.047785][T23189] ? __pfx_ksys_write (fs/read_write.c:721) 
[3661.047989][T23189] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[3661.048212][T23189] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[3661.048422][T23189] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3661.048685][T23189] RIP: 0033:0x7fbaf92bdb77
[ 3661.048900][T23189] 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
[ 3661.049623][T23189] RSP: 002b:00007ffedc1d07d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3661.049935][T23189] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fbaf92bdb77
[ 3661.050242][T23189] RDX: 0000000000000002 RSI: 000055b63760a5e0 RDI: 0000000000000001
[ 3661.050566][T23189] RBP: 000055b63760a5e0 R08: 0000000000000000 R09: 00007fbaf93304e0
[ 3661.050879][T23189] R10: 00007fbaf93303e0 R11: 0000000000000246 R12: 0000000000000002
[ 3661.051186][T23189] R13: 00007fbaf9379760 R14: 0000000000000002 R15: 00007fbaf93749c0
| [ 3668.093047][T23189] ------------[ cut here ]------------
| [3668.094188][T23189] WARNING: CPU: 2 PID: 23189 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) 
| [ 3668.094651][T23189] Modules linked in: netdevsim psample xfrm_user macsec ip6_gre ip_gre gre cls_u32 sch_htb xt_mark sch_ingress act_mirred cls_basic sch_fq_codel xt_HL amt ip6t_rpfilter nft_compat nf_tables vxlan mpls_gso mpls_iptunnel mpls_router [last unloaded: netdevsim]
| [ 3668.096737][T23189] Tainted: [W]=WARN
[ 3668.096947][T23189] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[3668.097226][T23189] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 3668.097536][T23189] 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
[ 3668.098280][T23189] RSP: 0018:ffffc900021ef528 EFLAGS: 00010246
[ 3668.098585][T23189] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 3668.098919][T23189] RDX: 0000000000000000 RSI: ffff88800a82acd0 RDI: ffff888009ecae38
[ 3668.099249][T23189] RBP: ffffffffb9053580 R08: 0000000000000000 R09: fffffbfff6dc2504
[ 3668.099590][T23189] R10: ffffffffb6e12827 R11: ffff888009eca300 R12: 0000000000000000
[ 3668.099917][T23189] R13: ffff88800a82a130 R14: ffff88800a82a008 R15: ffff88800a82a000
[ 3668.100241][T23189] FS:  00007fbaf917c740(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
[ 3668.100672][T23189] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3668.100955][T23189] CR2: 00007f42363d126f CR3: 0000000012cc4001 CR4: 0000000000772ef0
[ 3668.101286][T23189] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3668.101621][T23189] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3668.101943][T23189] PKRU: 55555554
[ 3668.102117][T23189] Call Trace:
[ 3668.102290][T23189]  <TASK>
[3668.102418][T23189] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[3668.102659][T23189] ? __warn (kernel/panic.c:748) 
[3668.102836][T23189] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[3668.103064][T23189] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[3668.103294][T23189] ? handle_bug (arch/x86/kernel/traps.c:285) 
[3668.103480][T23189] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[3668.103709][T23189] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[3668.103949][T23189] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[3668.104177][T23189] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[3668.104408][T23189] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[3668.104697][T23189] ? _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) 
[3668.104927][T23189] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[3668.105158][T23189] register_netdevice (net/core/dev.c:11003) 
[3668.105386][T23189] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[3668.105627][T23189] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[3668.105865][T23189] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[3668.106101][T23189] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[3668.106380][T23189] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[3668.106569][T23189] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[3668.106857][T23189] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[3668.107146][T23189] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[3668.107429][T23189] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[3668.107704][T23189] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[3668.107984][T23189] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[3668.108208][T23189] ? 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)) 
[3668.108378][T23189] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[3668.108622][T23189] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[3668.108855][T23189] __driver_probe_device (drivers/base/dd.c:800) 
[3668.109082][T23189] driver_probe_device (drivers/base/dd.c:830) 
[3668.109303][T23189] __device_attach_driver (drivers/base/dd.c:959) 
[3668.109543][T23189] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[3668.109815][T23189] bus_for_each_drv (drivers/base/bus.c:462) 
[3668.110042][T23189] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[3668.110260][T23189] ? bus_to_subsys (drivers/base/bus.c:85) 
[3668.110546][T23189] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[3668.110773][T23189] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[3668.111007][T23189] __device_attach (drivers/base/dd.c:1030) 
[3668.111231][T23189] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[3668.111466][T23189] ? bus_to_subsys (drivers/base/bus.c:85) 
[3668.111694][T23189] ? 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) 
[3668.111929][T23189] bus_probe_device (drivers/base/bus.c:537) 
[3668.112163][T23189] device_add (drivers/base/core.c:3672) 
[3668.112388][T23189] ? __pfx_device_add (drivers/base/core.c:3548) 
[3668.112627][T23189] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[3668.112863][T23189] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[3668.113150][T23189] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[3668.113445][T23189] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[3668.113671][T23189] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[3668.113906][T23189] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[3668.114132][T23189] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[3668.114361][T23189] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[3668.114556][T23189] ? __pfx_vfs_write (fs/read_write.c:660) 
[3668.114786][T23189] ? __lock_release (kernel/locking/lockdep.c:5527) 
[3668.115009][T23189] ? 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) 
[3668.115242][T23189] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[3668.115489][T23189] ksys_write (fs/read_write.c:731) 
[3668.115699][T23189] ? __pfx_ksys_write (fs/read_write.c:721) 
[3668.115923][T23189] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[3668.116160][T23189] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[3668.116387][T23189] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3668.116674][T23189] RIP: 0033:0x7fbaf92bdb77
[ 3668.116901][T23189] 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
[ 3668.117656][T23189] RSP: 002b:00007ffedc1d13b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3668.117985][T23189] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fbaf92bdb77
[ 3668.118315][T23189] RDX: 0000000000000005 RSI: 000055b63760a5e0 RDI: 0000000000000001
[ 3668.118650][T23189] RBP: 000055b63760a5e0 R08: 0000000000000000 R09: 00007fbaf93304e0
[ 3668.118973][T23189] R10: 00007fbaf93303e0 R11: 0000000000000246 R12: 0000000000000005
[ 3668.119295][T23189] R13: 00007fbaf9379760 R14: 0000000000000005 R15: 00007fbaf93749c0
| [ 3668.141789][T23189] ------------[ cut here ]------------
| [3668.142210][T23189] WARNING: CPU: 2 PID: 23189 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) 
| [ 3668.142706][T23189] Modules linked in: netdevsim psample xfrm_user macsec ip6_gre ip_gre gre cls_u32 sch_htb xt_mark sch_ingress act_mirred cls_basic sch_fq_codel xt_HL amt ip6t_rpfilter nft_compat nf_tables vxlan mpls_gso mpls_iptunnel mpls_router [last unloaded: netdevsim]
| [ 3668.144289][T23189] Tainted: [W]=WARN
[ 3668.144473][T23189] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[3668.144745][T23189] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 3668.145022][T23189] 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
[ 3668.145758][T23189] RSP: 0018:ffffc900021ef528 EFLAGS: 00010246
[ 3668.146033][T23189] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 3668.146348][T23189] RDX: 0000000000000000 RSI: ffff88800b402cd0 RDI: ffff888009ecae38
[ 3668.146676][T23189] RBP: ffffffffb9053580 R08: 0000000000000000 R09: fffffbfff6dc2504
[ 3668.146999][T23189] R10: ffffffffb6e12827 R11: ffff888009eca300 R12: 0000000000000000
[ 3668.147317][T23189] R13: ffff88800b402130 R14: ffff88800b402008 R15: ffff88800b402000
[ 3668.147647][T23189] FS:  00007fbaf917c740(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
[ 3668.148017][T23189] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3668.148293][T23189] CR2: 00007fbaf931dc8c CR3: 0000000012cc4001 CR4: 0000000000772ef0
[ 3668.148628][T23189] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3668.148948][T23189] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3668.149268][T23189] PKRU: 55555554
[ 3668.149447][T23189] Call Trace:
[ 3668.149624][T23189]  <TASK>
[3668.149745][T23189] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[3668.149971][T23189] ? __warn (kernel/panic.c:748) 
[3668.150146][T23189] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[3668.150367][T23189] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[3668.150647][T23189] ? handle_bug (arch/x86/kernel/traps.c:285) 
[3668.150819][T23189] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[3668.151042][T23189] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[3668.151278][T23189] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[3668.151518][T23189] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[3668.151756][T23189] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[3668.152034][T23189] ? _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) 
[3668.152258][T23189] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[3668.152499][T23189] register_netdevice (net/core/dev.c:11003) 
[3668.152725][T23189] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[3668.152947][T23189] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[3668.153188][T23189] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[3668.153422][T23189] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[3668.153718][T23189] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[3668.153890][T23189] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[3668.154175][T23189] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[3668.154466][T23189] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[3668.154750][T23189] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[3668.154981][T23189] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[3668.155257][T23189] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[3668.155504][T23189] ? 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)) 
[3668.155676][T23189] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[3668.155905][T23189] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[3668.156135][T23189] __driver_probe_device (drivers/base/dd.c:800) 
[3668.156363][T23189] driver_probe_device (drivers/base/dd.c:830) 
[3668.156603][T23189] __device_attach_driver (drivers/base/dd.c:959) 
[3668.156827][T23189] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[3668.157106][T23189] bus_for_each_drv (drivers/base/bus.c:462) 
[3668.157330][T23189] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[3668.157575][T23189] ? bus_to_subsys (drivers/base/bus.c:85) 
[3668.157800][T23189] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[3668.158022][T23189] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[3668.158250][T23189] __device_attach (drivers/base/dd.c:1030) 
[3668.158486][T23189] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[3668.158713][T23189] ? bus_to_subsys (drivers/base/bus.c:85) 
[3668.158937][T23189] ? 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) 
[3668.159168][T23189] bus_probe_device (drivers/base/bus.c:537) 
[3668.159398][T23189] device_add (drivers/base/core.c:3672) 
[3668.159637][T23189] ? __pfx_device_add (drivers/base/core.c:3548) 
[3668.159863][T23189] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[3668.160099][T23189] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[3668.160390][T23189] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[3668.160732][T23189] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[3668.160956][T23189] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[3668.161191][T23189] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[3668.161413][T23189] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[3668.161659][T23189] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[3668.161841][T23189] ? __pfx_vfs_write (fs/read_write.c:660) 
[3668.162079][T23189] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[3668.162312][T23189] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[3668.162570][T23189] ksys_write (fs/read_write.c:731) 
[3668.162747][T23189] ? __pfx_ksys_write (fs/read_write.c:721) 
[3668.162982][T23189] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[3668.163210][T23189] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 3668.163498][T23189] RIP: 0033:0x7fbaf92bdb77
[ 3668.163726][T23189] 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
[ 3668.164472][T23189] RSP: 002b:00007ffedc1d1618 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 3668.164800][T23189] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fbaf92bdb77
[ 3668.165120][T23189] RDX: 0000000000000005 RSI: 000055b63760a5e0 RDI: 0000000000000001
[ 3668.165460][T23189] RBP: 000055b63760a5e0 R08: 0000000000000000 R09: 00007fbaf93304e0
[ 3668.165783][T23189] R10: 00007fbaf93303e0 R11: 0000000000000246 R12: 0000000000000005


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