======================================
| [  396.523834][ T6062] Initializing XFRM netlink socket
| [  398.982683][ T2855] ------------[ cut here ]------------
| [ 398.983164][ T2855] WARNING: CPU: 2 PID: 2855 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) 
| [  398.983710][ T2855] Modules linked in: netdevsim psample xfrm_user macsec vxlan ip6_gre ip_gre gre cls_u32 sch_htb xt_mark nft_compat nf_tables sch_ingress act_mirred cls_basic sch_fq_codel
[  398.985039][ T2855] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 398.985415][ T2855] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 398.985787][ T2855] 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
[  398.986608][ T2855] RSP: 0018:ffffc900021e7528 EFLAGS: 00010246
[  398.986940][ T2855] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  398.987273][ T2855] RDX: 0000000000000000 RSI: ffff88800cac2cd0 RDI: ffff88800c3cd0f8
[  398.987599][ T2855] RBP: ffffffffbc453580 R08: 0000000000000000 R09: fffffbfff7442504
[  398.987923][ T2855] R10: ffffffffba212827 R11: ffff88800c3cc5c0 R12: 0000000000000000
[  398.988260][ T2855] R13: ffff88800cac2130 R14: ffff88800cac2008 R15: ffff88800cac2000
[  398.988583][ T2855] FS:  00007f03576b2740(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
[  398.988965][ T2855] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  398.989250][ T2855] CR2: 00005564b5a455e0 CR3: 000000000cdae001 CR4: 0000000000772ef0
[  398.989573][ T2855] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  398.989895][ T2855] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  398.990228][ T2855] PKRU: 55555554
[  398.990402][ T2855] Call Trace:
[  398.990572][ T2855]  <TASK>
[ 398.990697][ T2855] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 398.990918][ T2855] ? __warn (kernel/panic.c:748) 
[ 398.991100][ T2855] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 398.991321][ T2855] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 398.991545][ T2855] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 398.991717][ T2855] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 398.991939][ T2855] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 398.992187][ T2855] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 398.992405][ T2855] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 398.992632][ T2855] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 398.992904][ T2855] ? _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) 
[ 398.993137][ T2855] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 398.993366][ T2855] register_netdevice (net/core/dev.c:11003) 
[ 398.993595][ T2855] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 398.993811][ T2855] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 398.994053][ T2855] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 398.994284][ T2855] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 398.994561][ T2855] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 398.994734][ T2855] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 398.995031][ T2855] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 398.995309][ T2855] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 398.995590][ T2855] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 398.995822][ T2855] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 398.996107][ T2855] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 398.996328][ T2855] ? 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)) 
[ 398.996503][ T2855] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 398.996732][ T2855] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 398.996968][ T2855] __driver_probe_device (drivers/base/dd.c:800) 
[ 398.997192][ T2855] driver_probe_device (drivers/base/dd.c:830) 
[ 398.997411][ T2855] __device_attach_driver (drivers/base/dd.c:959) 
[ 398.997634][ T2855] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 398.997897][ T2855] bus_for_each_drv (drivers/base/bus.c:462) 
[ 398.998130][ T2855] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 398.998345][ T2855] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 398.998565][ T2855] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 398.998781][ T2855] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 398.999017][ T2855] __device_attach (drivers/base/dd.c:1030) 
[ 398.999243][ T2855] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 398.999461][ T2855] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 398.999683][ T2855] ? 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) 
[ 398.999909][ T2855] bus_probe_device (drivers/base/bus.c:537) 
[ 399.000143][ T2855] device_add (drivers/base/core.c:3672) 
[ 399.000367][ T2855] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 399.000582][ T2855] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 399.000812][ T2855] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 399.001100][ T2855] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 399.001386][ T2855] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 399.001602][ T2855] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 399.001824][ T2855] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 399.002051][ T2855] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 399.002273][ T2855] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 399.002453][ T2855] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 399.002676][ T2855] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 399.002896][ T2855] ? 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) 
[ 399.003131][ T2855] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 399.003359][ T2855] ksys_write (fs/read_write.c:731) 
[ 399.003531][ T2855] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 399.003747][ T2855] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 399.003987][ T2855] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 399.004211][ T2855] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  399.004475][ T2855] RIP: 0033:0x7f03577f3b77
[ 399.004705][ T2855] 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
[  399.005531][ T2855] RSP: 002b:00007ffe1a952988 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  399.005853][ T2855] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f03577f3b77
[  399.006188][ T2855] RDX: 0000000000000002 RSI: 00005564b5a455e0 RDI: 0000000000000001
[  399.006507][ T2855] RBP: 00005564b5a455e0 R08: 0000000000000000 R09: 00007f03578664e0
[  399.006848][ T2855] R10: 00007f03578663e0 R11: 0000000000000246 R12: 0000000000000002
[  399.007177][ T2855] R13: 00007f03578af760 R14: 0000000000000002 R15: 00007f03578aa9c0
| [  405.710321][ T2855] ------------[ cut here ]------------
| [ 405.710970][ T2855] WARNING: CPU: 2 PID: 2855 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) 
| [  405.711553][ T2855] Modules linked in: netdevsim psample xfrm_user macsec vxlan ip6_gre ip_gre gre cls_u32 sch_htb xt_mark nft_compat nf_tables sch_ingress act_mirred cls_basic sch_fq_codel [last unloaded: netdevsim]
| [  405.713072][ T2855] Tainted: [W]=WARN
[  405.713390][ T2855] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 405.713801][ T2855] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 405.714218][ T2855] 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
[  405.715086][ T2855] RSP: 0018:ffffc900021e7528 EFLAGS: 00010246
[  405.715481][ T2855] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  405.715935][ T2855] RDX: 0000000000000000 RSI: ffff88800bf12cd0 RDI: ffff88800c3cd0f8
[  405.716571][ T2855] RBP: ffffffffbc453580 R08: 0000000000000000 R09: fffffbfff7442504
[  405.716988][ T2855] R10: ffffffffba212827 R11: ffff88800c3cc5c0 R12: 0000000000000000
[  405.717393][ T2855] R13: ffff88800bf12130 R14: ffff88800bf12008 R15: ffff88800bf12000
[  405.717795][ T2855] FS:  00007f03576b2740(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
[  405.718269][ T2855] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  405.718626][ T2855] CR2: 00005564b5a455e0 CR3: 000000000cdae003 CR4: 0000000000772ef0
[  405.719041][ T2855] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  405.719460][ T2855] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  405.719865][ T2855] PKRU: 55555554
[  405.720154][ T2855] Call Trace:
[  405.720325][ T2855]  <TASK>
[ 405.720448][ T2855] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 405.720671][ T2855] ? __warn (kernel/panic.c:748) 
[ 405.720845][ T2855] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 405.721079][ T2855] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 405.721309][ T2855] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 405.721483][ T2855] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 405.721708][ T2855] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 405.721955][ T2855] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 405.722179][ T2855] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 405.722410][ T2855] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 405.722689][ T2855] ? _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) 
[ 405.722919][ T2855] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 405.723156][ T2855] register_netdevice (net/core/dev.c:11003) 
[ 405.723389][ T2855] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 405.723609][ T2855] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 405.723843][ T2855] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 405.724098][ T2855] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 405.724382][ T2855] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 405.724557][ T2855] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 405.724847][ T2855] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 405.725138][ T2855] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 405.725422][ T2855] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 405.725656][ T2855] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 405.725933][ T2855] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 405.726167][ T2855] ? 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)) 
[ 405.726341][ T2855] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 405.726575][ T2855] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 405.726802][ T2855] __driver_probe_device (drivers/base/dd.c:800) 
[ 405.727037][ T2855] driver_probe_device (drivers/base/dd.c:830) 
[ 405.727257][ T2855] __device_attach_driver (drivers/base/dd.c:959) 
[ 405.727614][ T2855] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 405.727885][ T2855] bus_for_each_drv (drivers/base/bus.c:462) 
[ 405.728130][ T2855] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 405.728353][ T2855] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 405.728577][ T2855] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 405.728798][ T2855] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 405.729038][ T2855] __device_attach (drivers/base/dd.c:1030) 
[ 405.729275][ T2855] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 405.729496][ T2855] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 405.729721][ T2855] ? 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) 
[ 405.729962][ T2855] bus_probe_device (drivers/base/bus.c:537) 
[ 405.730187][ T2855] device_add (drivers/base/core.c:3672) 
[ 405.730412][ T2855] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 405.730631][ T2855] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 405.730866][ T2855] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 405.731158][ T2855] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 405.731450][ T2855] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 405.731672][ T2855] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 405.731902][ T2855] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 405.732134][ T2855] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 405.732366][ T2855] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 405.732545][ T2855] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 405.732771][ T2855] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 405.733000][ T2855] ? 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) 
[ 405.733234][ T2855] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 405.733465][ T2855] ksys_write (fs/read_write.c:731) 
[ 405.733638][ T2855] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 405.733860][ T2855] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 405.734100][ T2855] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 405.734327][ T2855] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  405.734595][ T2855] RIP: 0033:0x7f03577f3b77
[ 405.734826][ T2855] 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
[  405.735563][ T2855] RSP: 002b:00007ffe1a953568 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  405.735888][ T2855] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f03577f3b77
[  405.736223][ T2855] RDX: 0000000000000005 RSI: 00005564b5a455e0 RDI: 0000000000000001
[  405.736543][ T2855] RBP: 00005564b5a455e0 R08: 0000000000000000 R09: 00007f03578664e0
[  405.736859][ T2855] R10: 00007f03578663e0 R11: 0000000000000246 R12: 0000000000000005
[  405.737188][ T2855] R13: 00007f03578af760 R14: 0000000000000005 R15: 00007f03578aa9c0
| [  405.764344][ T2855] ------------[ cut here ]------------
| [ 405.764738][ T2855] WARNING: CPU: 3 PID: 2855 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) 
| [  405.765273][ T2855] Modules linked in: netdevsim psample xfrm_user macsec vxlan ip6_gre ip_gre gre cls_u32 sch_htb xt_mark nft_compat nf_tables sch_ingress act_mirred cls_basic sch_fq_codel [last unloaded: netdevsim]
| [  405.766607][ T2855] Tainted: [W]=WARN
[  405.766764][ T2855] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 405.767036][ T2855] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 405.767307][ T2855] 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
[  405.768033][ T2855] RSP: 0018:ffffc900021e7528 EFLAGS: 00010246
[  405.768294][ T2855] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  405.768606][ T2855] RDX: 0000000000000000 RSI: ffff888010e1acd0 RDI: ffff88800c3cd0f8
[  405.768908][ T2855] RBP: ffffffffbc453580 R08: 0000000000000000 R09: fffffbfff7442504
[  405.769231][ T2855] R10: ffffffffba212827 R11: ffff88800c3cc5c0 R12: 0000000000000000
[  405.769539][ T2855] R13: ffff888010e1a130 R14: ffff888010e1a008 R15: ffff888010e1a000
[  405.769846][ T2855] FS:  00007f03576b2740(0000) GS:ffff88806cf80000(0000) knlGS:0000000000000000
[  405.770213][ T2855] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  405.770471][ T2855] CR2: 00005564b5a4ef00 CR3: 000000000cdae001 CR4: 0000000000772ef0
[  405.770779][ T2855] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  405.771098][ T2855] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  405.771405][ T2855] PKRU: 55555554
[  405.771560][ T2855] Call Trace:
[  405.771716][ T2855]  <TASK>
[ 405.771822][ T2855] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 405.772139][ T2855] ? __warn (kernel/panic.c:748) 
[ 405.772301][ T2855] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 405.772510][ T2855] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 405.772727][ T2855] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 405.772887][ T2855] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 405.773104][ T2855] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 405.773328][ T2855] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 405.773536][ T2855] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 405.773748][ T2855] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 405.774019][ T2855] ? _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) 
[ 405.774235][ T2855] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 405.774448][ T2855] register_netdevice (net/core/dev.c:11003) 
[ 405.774665][ T2855] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 405.774887][ T2855] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 405.775117][ T2855] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 405.775336][ T2855] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 405.775603][ T2855] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 405.775762][ T2855] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 405.776047][ T2855] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 405.776310][ T2855] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 405.776575][ T2855] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 405.776793][ T2855] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 405.777064][ T2855] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 405.777277][ T2855] ? 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)) 
[ 405.777433][ T2855] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 405.777649][ T2855] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 405.777862][ T2855] __driver_probe_device (drivers/base/dd.c:800) 
[ 405.778082][ T2855] driver_probe_device (drivers/base/dd.c:830) 
[ 405.778291][ T2855] __device_attach_driver (drivers/base/dd.c:959) 
[ 405.778499][ T2855] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 405.778755][ T2855] bus_for_each_drv (drivers/base/bus.c:462) 
[ 405.778977][ T2855] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 405.779190][ T2855] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 405.779399][ T2855] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 405.779604][ T2855] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 405.779817][ T2855] __device_attach (drivers/base/dd.c:1030) 
[ 405.780035][ T2855] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 405.780240][ T2855] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 405.780447][ T2855] ? 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) 
[ 405.780659][ T2855] bus_probe_device (drivers/base/bus.c:537) 
[ 405.780869][ T2855] device_add (drivers/base/core.c:3672) 
[ 405.781089][ T2855] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 405.781295][ T2855] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 405.781515][ T2855] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 405.781786][ T2855] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 405.782073][ T2855] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 405.782280][ T2855] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 405.782492][ T2855] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 405.782700][ T2855] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 405.782916][ T2855] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 405.783091][ T2855] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 405.783304][ T2855] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 405.783527][ T2855] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 405.783744][ T2855] ksys_write (fs/read_write.c:731) 
[ 405.783903][ T2855] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 405.784135][ T2855] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 405.784346][ T2855] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  405.784599][ T2855] RIP: 0033:0x7f03577f3b77
[ 405.784809][ T2855] 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
[  405.785532][ T2855] RSP: 002b:00007ffe1a9537c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  405.785841][ T2855] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f03577f3b77
[  405.786158][ T2855] RDX: 0000000000000005 RSI: 00005564b5a455e0 RDI: 0000000000000001
[  405.786465][ T2855] RBP: 00005564b5a455e0 R08: 0000000000000000 R09: 00007f03578664e0
[  405.786773][ T2855] R10: 00007f03578663e0 R11: 0000000000000246 R12: 0000000000000005


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