======================================
| [  987.185149][T11703] Initializing XFRM netlink socket
| [  989.628911][ T8495] ------------[ cut here ]------------
| [ 989.629477][ T8495] WARNING: CPU: 1 PID: 8495 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) 
| [  989.629904][ T8495] Modules linked in: netdevsim psample xfrm_user macsec ip6_gre ip_gre gre sch_htb dccp_ipv6 dccp_ipv4 dccp sch_etf sch_fq ipt_rpfilter xt_conntrack nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables act_gact cls_flower vxlan act_mirred cls_u32 sch_ingress ifb unix_diag
[  989.631466][ T8495] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 989.631730][ T8495] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 989.631996][ T8495] 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
[  989.632731][ T8495] RSP: 0018:ffffc90000f47528 EFLAGS: 00010246
[  989.633001][ T8495] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  989.633317][ T8495] RDX: 0000000000000000 RSI: ffff8880103facd0 RDI: ffff88800500d0f8
[  989.633635][ T8495] RBP: ffffffffbb453580 R08: 0000000000000000 R09: fffffbfff7242504
[  989.633946][ T8495] R10: ffffffffb9212827 R11: ffff88800500c5c0 R12: 0000000000000000
[  989.634260][ T8495] R13: ffff8880103fa130 R14: ffff8880103fa008 R15: ffff8880103fa000
[  989.634564][ T8495] FS:  00007f7543c90740(0000) GS:ffff888065a80000(0000) knlGS:0000000000000000
[  989.634919][ T8495] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  989.635183][ T8495] CR2: 000056266264d760 CR3: 00000000112ca006 CR4: 0000000000772ef0
[  989.635485][ T8495] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  989.635789][ T8495] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  989.636104][ T8495] PKRU: 55555554
[  989.636263][ T8495] Call Trace:
[  989.636418][ T8495]  <TASK>
[ 989.636527][ T8495] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 989.636736][ T8495] ? __warn (kernel/panic.c:748) 
[ 989.636894][ T8495] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 989.637114][ T8495] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 989.637321][ T8495] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 989.637476][ T8495] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 989.637677][ T8495] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 989.637892][ T8495] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 989.638104][ T8495] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 989.638312][ T8495] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 989.638591][ T8495] ? _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) 
[ 989.638809][ T8495] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 989.639021][ T8495] register_netdevice (net/core/dev.c:11003) 
[ 989.639245][ T8495] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 989.639450][ T8495] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 989.639670][ T8495] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 989.639905][ T8495] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 989.640173][ T8495] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 989.640329][ T8495] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 989.640594][ T8495] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 989.640851][ T8495] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 989.641120][ T8495] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 989.641336][ T8495] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 989.641593][ T8495] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 989.641796][ T8495] ? 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)) 
[ 989.641950][ T8495] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 989.642172][ T8495] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 989.642380][ T8495] __driver_probe_device (drivers/base/dd.c:800) 
[ 989.642585][ T8495] driver_probe_device (drivers/base/dd.c:830) 
[ 989.642787][ T8495] __device_attach_driver (drivers/base/dd.c:959) 
[ 989.642996][ T8495] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 989.643251][ T8495] bus_for_each_drv (drivers/base/bus.c:462) 
[ 989.643454][ T8495] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 989.643673][ T8495] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 989.643878][ T8495] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 989.644094][ T8495] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 989.644312][ T8495] __device_attach (drivers/base/dd.c:1030) 
[ 989.644518][ T8495] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 989.644722][ T8495] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 989.644936][ T8495] ? 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) 
[ 989.645153][ T8495] bus_probe_device (drivers/base/bus.c:537) 
[ 989.645358][ T8495] device_add (drivers/base/core.c:3672) 
[ 989.645561][ T8495] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 989.645760][ T8495] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 989.645979][ T8495] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 989.646251][ T8495] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 989.646514][ T8495] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 989.646713][ T8495] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 989.646921][ T8495] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 989.647148][ T8495] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 989.647367][ T8495] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 989.647533][ T8495] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 989.647744][ T8495] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 989.647949][ T8495] ? 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) 
[ 989.648185][ T8495] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 989.648393][ T8495] ksys_write (fs/read_write.c:731) 
[ 989.648554][ T8495] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 989.648774][ T8495] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 989.648997][ T8495] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 989.649217][ T8495] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  989.649473][ T8495] RIP: 0033:0x7f7543dd1b77
[ 989.649690][ T8495] 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
[  989.650420][ T8495] RSP: 002b:00007ffd5c9beda8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  989.650749][ T8495] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f7543dd1b77
[  989.651058][ T8495] RDX: 0000000000000002 RSI: 000056266264d760 RDI: 0000000000000001
[  989.651375][ T8495] RBP: 000056266264d760 R08: 0000000000000000 R09: 00007f7543e444e0
[  989.651683][ T8495] R10: 00007f7543e443e0 R11: 0000000000000246 R12: 0000000000000002
[  989.652009][ T8495] R13: 00007f7543e8d760 R14: 0000000000000002 R15: 00007f7543e889c0
| [  996.228494][ T8495] ------------[ cut here ]------------
| [ 996.228916][ T8495] WARNING: CPU: 2 PID: 8495 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) 
| [  996.229521][ T8495] Modules linked in: netdevsim psample xfrm_user macsec ip6_gre ip_gre gre sch_htb dccp_ipv6 dccp_ipv4 dccp sch_etf sch_fq ipt_rpfilter xt_conntrack nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables act_gact cls_flower vxlan act_mirred cls_u32 sch_ingress ifb unix_diag [last unloaded: netdevsim]
| [  996.231269][ T8495] Tainted: [W]=WARN
[  996.231467][ T8495] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 996.231739][ T8495] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 996.232019][ T8495] 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
[  996.232763][ T8495] RSP: 0018:ffffc90000f47528 EFLAGS: 00010246
[  996.233033][ T8495] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  996.233355][ T8495] RDX: 0000000000000000 RSI: ffff88802074acd0 RDI: ffff88800500d0f8
[  996.233678][ T8495] RBP: ffffffffbb453580 R08: 0000000000000000 R09: fffffbfff7242504
[  996.233991][ T8495] R10: ffffffffb9212827 R11: ffff88800500c5c0 R12: 0000000000000000
[  996.234316][ T8495] R13: ffff88802074a130 R14: ffff88802074a008 R15: ffff88802074a000
[  996.234648][ T8495] FS:  00007f7543c90740(0000) GS:ffff888065b00000(0000) knlGS:0000000000000000
[  996.235020][ T8495] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  996.235311][ T8495] CR2: 000056266264d760 CR3: 00000000112ca001 CR4: 0000000000772ef0
[  996.235631][ T8495] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  996.235951][ T8495] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  996.236281][ T8495] PKRU: 55555554
[  996.236459][ T8495] Call Trace:
[  996.236646][ T8495]  <TASK>
[ 996.236766][ T8495] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 996.236982][ T8495] ? __warn (kernel/panic.c:748) 
[ 996.237163][ T8495] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 996.237384][ T8495] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 996.237609][ T8495] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 996.237779][ T8495] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 996.238014][ T8495] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 996.238267][ T8495] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 996.238492][ T8495] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 996.238739][ T8495] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 996.239018][ T8495] ? _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) 
[ 996.239383][ T8495] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 996.239617][ T8495] register_netdevice (net/core/dev.c:11003) 
[ 996.239856][ T8495] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 996.240090][ T8495] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 996.240365][ T8495] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 996.240604][ T8495] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 996.240898][ T8495] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 996.241087][ T8495] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 996.241384][ T8495] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 996.241667][ T8495] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 996.241957][ T8495] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 996.242203][ T8495] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 996.242507][ T8495] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 996.242734][ T8495] ? 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)) 
[ 996.242912][ T8495] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 996.243159][ T8495] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 996.243395][ T8495] __driver_probe_device (drivers/base/dd.c:800) 
[ 996.243621][ T8495] driver_probe_device (drivers/base/dd.c:830) 
[ 996.243847][ T8495] __device_attach_driver (drivers/base/dd.c:959) 
[ 996.244085][ T8495] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 996.244359][ T8495] bus_for_each_drv (drivers/base/bus.c:462) 
[ 996.244584][ T8495] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 996.244814][ T8495] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 996.245042][ T8495] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 996.245272][ T8495] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 996.245505][ T8495] __device_attach (drivers/base/dd.c:1030) 
[ 996.245726][ T8495] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 996.245948][ T8495] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 996.246178][ T8495] ? 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) 
[ 996.246414][ T8495] bus_probe_device (drivers/base/bus.c:537) 
[ 996.246641][ T8495] device_add (drivers/base/core.c:3672) 
[ 996.246870][ T8495] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 996.247101][ T8495] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 996.247339][ T8495] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 996.247626][ T8495] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 996.247915][ T8495] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 996.248154][ T8495] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 996.248406][ T8495] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 996.248643][ T8495] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 996.248873][ T8495] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 996.249052][ T8495] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 996.249291][ T8495] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 996.249513][ T8495] ? 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) 
[ 996.249741][ T8495] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 996.249981][ T8495] ksys_write (fs/read_write.c:731) 
[ 996.250167][ T8495] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 996.250387][ T8495] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 996.250617][ T8495] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 996.250845][ T8495] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  996.251120][ T8495] RIP: 0033:0x7f7543dd1b77
[ 996.251346][ T8495] 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
[  996.252084][ T8495] RSP: 002b:00007ffd5c9bf988 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  996.252410][ T8495] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f7543dd1b77
[  996.252730][ T8495] RDX: 0000000000000005 RSI: 000056266264d760 RDI: 0000000000000001
[  996.253056][ T8495] RBP: 000056266264d760 R08: 0000000000000000 R09: 00007f7543e444e0
[  996.253384][ T8495] R10: 00007f7543e443e0 R11: 0000000000000246 R12: 0000000000000005
[  996.253704][ T8495] R13: 00007f7543e8d760 R14: 0000000000000005 R15: 00007f7543e889c0
| [  996.273273][ T8495] ------------[ cut here ]------------
| [ 996.273593][ T8495] WARNING: CPU: 1 PID: 8495 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) 
| [  996.274183][ T8495] Modules linked in: netdevsim psample xfrm_user macsec ip6_gre ip_gre gre sch_htb dccp_ipv6 dccp_ipv4 dccp sch_etf sch_fq ipt_rpfilter xt_conntrack nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat nf_tables act_gact cls_flower vxlan act_mirred cls_u32 sch_ingress ifb unix_diag [last unloaded: netdevsim]
| [  996.275871][ T8495] Tainted: [W]=WARN
[  996.276031][ T8495] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 996.276312][ T8495] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 996.276600][ T8495] 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
[  996.277342][ T8495] RSP: 0018:ffffc90000f47528 EFLAGS: 00010246
[  996.277618][ T8495] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  996.277919][ T8495] RDX: 0000000000000000 RSI: ffff88800267acd0 RDI: ffff88800500d0f8
[  996.278232][ T8495] RBP: ffffffffbb453580 R08: 0000000000000000 R09: fffffbfff7242504
[  996.278566][ T8495] R10: ffffffffb9212827 R11: ffff88800500c5c0 R12: 0000000000000000
[  996.278877][ T8495] R13: ffff88800267a130 R14: ffff88800267a008 R15: ffff88800267a000
[  996.279198][ T8495] FS:  00007f7543c90740(0000) GS:ffff888065a80000(0000) knlGS:0000000000000000
[  996.279557][ T8495] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  996.279824][ T8495] CR2: 00005645cf284e20 CR3: 00000000112ca005 CR4: 0000000000772ef0
[  996.280145][ T8495] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  996.280453][ T8495] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  996.280760][ T8495] PKRU: 55555554
[  996.280955][ T8495] Call Trace:
[  996.281128][ T8495]  <TASK>
[ 996.281240][ T8495] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 996.281446][ T8495] ? __warn (kernel/panic.c:748) 
[ 996.281604][ T8495] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 996.281813][ T8495] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 996.282023][ T8495] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 996.282191][ T8495] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 996.282406][ T8495] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 996.282621][ T8495] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 996.282829][ T8495] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 996.283036][ T8495] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 996.283302][ T8495] ? _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) 
[ 996.283510][ T8495] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 996.283718][ T8495] register_netdevice (net/core/dev.c:11003) 
[ 996.283924][ T8495] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 996.284169][ T8495] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 996.284394][ T8495] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 996.284617][ T8495] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 996.284883][ T8495] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 996.285044][ T8495] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 996.285385][ T8495] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 996.285660][ T8495] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 996.285929][ T8495] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 996.286159][ T8495] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 996.286422][ T8495] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 996.286638][ T8495] ? 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)) 
[ 996.286792][ T8495] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 996.287004][ T8495] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 996.287230][ T8495] __driver_probe_device (drivers/base/dd.c:800) 
[ 996.287435][ T8495] driver_probe_device (drivers/base/dd.c:830) 
[ 996.287638][ T8495] __device_attach_driver (drivers/base/dd.c:959) 
[ 996.287844][ T8495] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 996.288114][ T8495] bus_for_each_drv (drivers/base/bus.c:462) 
[ 996.288350][ T8495] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 996.288567][ T8495] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 996.288779][ T8495] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 996.288985][ T8495] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 996.289210][ T8495] __device_attach (drivers/base/dd.c:1030) 
[ 996.289419][ T8495] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 996.289623][ T8495] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 996.289830][ T8495] ? 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) 
[ 996.290044][ T8495] bus_probe_device (drivers/base/bus.c:537) 
[ 996.290272][ T8495] device_add (drivers/base/core.c:3672) 
[ 996.290485][ T8495] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 996.290689][ T8495] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 996.290912][ T8495] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 996.291183][ T8495] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 996.291445][ T8495] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 996.291645][ T8495] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 996.291854][ T8495] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 996.292054][ T8495] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 996.292282][ T8495] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 996.292468][ T8495] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 996.292678][ T8495] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 996.292891][ T8495] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 996.293125][ T8495] ksys_write (fs/read_write.c:731) 
[ 996.293291][ T8495] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 996.293509][ T8495] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 996.293718][ T8495] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  996.293972][ T8495] RIP: 0033:0x7f7543dd1b77
[ 996.294191][ T8495] 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
[  996.294892][ T8495] RSP: 002b:00007ffd5c9bfbe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  996.295201][ T8495] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f7543dd1b77
[  996.295498][ T8495] RDX: 0000000000000005 RSI: 000056266264d760 RDI: 0000000000000001
[  996.295813][ T8495] RBP: 000056266264d760 R08: 0000000000000000 R09: 00007f7543e444e0
[  996.296140][ T8495] R10: 00007f7543e443e0 R11: 0000000000000246 R12: 0000000000000005


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