======================================
| 0
| xx__-> [   11.412107][  T228] ------------[ cut here ]------------
| [ 11.412717][ T228] WARNING: CPU: 1 PID: 228 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) 
| [   11.413631][  T228] Modules linked in: netdevsim
[   11.414732][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 11.415211][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.415688][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[   11.416986][  T228] RSP: 0018:ffffc90000ad7520 EFLAGS: 00010246
[   11.417502][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   11.418095][  T228] RDX: 0000000000000000 RSI: ffff88800b742c98 RDI: ffff88800b84ae38
[   11.418652][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[   11.419204][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[   11.419769][  T228] R13: ffff88800b742128 R14: ffff88800b742008 R15: ffff88800b742000
[   11.420292][  T228] FS:  00007fa815070740(0000) GS:ffff88802f480000(0000) knlGS:0000000000000000
[   11.420935][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   11.421444][  T228] CR2: 00007fe3a1350960 CR3: 00000000089ba006 CR4: 0000000000772ef0
[   11.421997][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   11.422546][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   11.423116][  T228] PKRU: 55555554
[   11.423399][  T228] Call Trace:
[   11.423682][  T228]  <TASK>
[ 11.423879][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.424272][ T228] ? __warn (kernel/panic.c:748) 
[ 11.424567][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.424936][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 11.425342][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 11.425628][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 11.425993][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 11.426431][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.426828][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 11.427316][ T228] ? _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) 
[ 11.427709][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 11.428110][ T228] register_netdevice (net/core/dev.c:11003) 
[ 11.428501][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 11.428909][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 11.429333][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 11.429808][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 11.430116][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 11.430601][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 11.431103][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 11.431598][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 11.431995][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 11.432483][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 11.432863][ T228] ? 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)) 
[ 11.433157][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 11.433536][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 11.433934][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 11.434330][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 11.434702][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 11.435105][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 11.435571][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 11.435924][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 11.436331][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 11.436593][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 11.436801][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 11.437014][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 11.437236][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 11.437440][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 11.437645][ T228] ? 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) 
[ 11.437859][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 11.438087][ T228] device_add (drivers/base/core.c:3672) 
[ 11.438301][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 11.438506][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 11.438724][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 11.438992][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 11.439274][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 11.439482][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 11.439702][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 11.439905][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 11.440129][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 11.440297][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 11.440510][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 11.440714][ T228] ? 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) 
[ 11.440933][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 11.441160][ T228] ksys_write (fs/read_write.c:731) 
[ 11.441326][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 11.441530][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 11.441752][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 11.441962][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   11.442253][  T228] RIP: 0033:0x7fa8151b1b77
[ 11.442475][ T228] 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
[   11.443204][  T228] RSP: 002b:00007ffc43bc47a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   11.443524][  T228] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fa8151b1b77
[   11.443844][  T228] RDX: 0000000000000005 RSI: 00005560b505f340 RDI: 0000000000000001
[   11.444175][  T228] RBP: 00005560b505f340 R08: 0000000000000003 R09: 0000000000000077
[   11.444482][  T228] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[   11.444789][  T228] R13: 00007fa81526d760 R14: 0000000000000005 R15: 00007fa8152689c0
| [   17.225588][  T228] ------------[ cut here ]------------
| [ 17.225944][ T228] WARNING: CPU: 3 PID: 228 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) 
| [   17.226381][  T228] Modules linked in: netdevsim [last unloaded: ip6_udp_tunnel]
| [   17.227084][  T228] Tainted: [W]=WARN
[   17.227256][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 17.227505][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 17.227777][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[   17.228548][  T228] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[   17.228816][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   17.229123][  T228] RDX: 0000000000000000 RSI: ffff88800b8c2c98 RDI: ffff88800b84ade8
[   17.229435][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[   17.229735][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[   17.230029][  T228] R13: ffff88800b8c2128 R14: ffff88800b8c2008 R15: ffff88800b8c2000
[   17.230343][  T228] FS:  00007fa815070740(0000) GS:ffff88802f580000(0000) knlGS:0000000000000000
[   17.230906][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.231169][  T228] CR2: 00005560b505f340 CR3: 00000000089ba003 CR4: 0000000000772ef0
[   17.231483][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   17.231795][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   17.232106][  T228] PKRU: 55555554
[   17.232253][  T228] Call Trace:
[   17.232404][  T228]  <TASK>
[ 17.232511][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 17.232716][ T228] ? __warn (kernel/panic.c:748) 
[ 17.232869][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 17.233078][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 17.233289][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 17.233440][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 17.233642][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 17.233888][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 17.234098][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 17.234351][ T228] ? _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) 
[ 17.234556][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 17.234758][ T228] register_netdevice (net/core/dev.c:11003) 
[ 17.234953][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 17.235168][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 17.235397][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 17.235648][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 17.235917][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 17.236175][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 17.236384][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 17.236599][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 17.236856][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 17.237087][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 17.237284][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 17.237492][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 17.237692][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 17.237860][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 17.238081][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 17.238302][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 17.238504][ T228] ksys_write (fs/read_write.c:731) 
[ 17.238651][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 17.238874][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 17.239082][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   17.239331][  T228] RIP: 0033:0x7fa8151b1b77
[ 17.239530][ T228] 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
[   17.240231][  T228] RSP: 002b:00007ffc43bc46a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   17.240525][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fa8151b1b77
[   17.240819][  T228] RDX: 0000000000000002 RSI: 00005560b505f340 RDI: 0000000000000001
[   17.241126][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[   17.241414][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000002
[   17.241712][  T228] R13: 00007fa81526d760 R14: 0000000000000002 R15: 00007fa8152689c0
| [   23.522462][  T228] ------------[ cut here ]------------
| [ 23.522907][ T228] WARNING: CPU: 2 PID: 228 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) 
| [   23.523414][  T228] Modules linked in: netdevsim [last unloaded: netdevsim]
| [   23.524222][  T228] Tainted: [W]=WARN
[   23.524414][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.524737][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 23.525091][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[   23.525891][  T228] RSP: 0018:ffffc90000ad7520 EFLAGS: 00010246
[   23.526271][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   23.526636][  T228] RDX: 0000000000000000 RSI: ffff88800a412c98 RDI: ffff88800b84ae38
[   23.526986][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[   23.527379][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[   23.527761][  T228] R13: ffff88800a412128 R14: ffff88800a412008 R15: ffff88800a412000
[   23.528153][  T228] FS:  00007fa815070740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[   23.528561][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.528884][  T228] CR2: 00007fa815224733 CR3: 00000000089ba002 CR4: 0000000000772ef0
[   23.529248][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   23.529799][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   23.530180][  T228] PKRU: 55555554
[   23.530372][  T228] Call Trace:
[   23.530553][  T228]  <TASK>
[ 23.530678][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 23.530937][ T228] ? __warn (kernel/panic.c:748) 
[ 23.531133][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 23.531368][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 23.531625][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 23.531802][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 23.532024][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 23.532283][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 23.532544][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 23.532827][ T228] ? _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) 
[ 23.533092][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 23.533330][ T228] register_netdevice (net/core/dev.c:11003) 
[ 23.533559][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 23.533827][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 23.534099][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 23.534419][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 23.534710][ T228] ? queue_delayed_work_on (kernel/workqueue.c:2565 (discriminator 1)) 
[ 23.534966][ T228] ? queue_delayed_work_on (kernel/workqueue.c:2567) 
[ 23.535213][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 23.535496][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 23.535735][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 23.536016][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 23.536306][ T228] ? 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)) 
[ 23.536493][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 23.536745][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 23.537015][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 23.537258][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 23.537492][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 23.537748][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 23.538028][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 23.538296][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 23.538522][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 23.538750][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 23.538976][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 23.539215][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 23.539447][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 23.539669][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 23.539931][ T228] ? 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) 
[ 23.540189][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 23.540428][ T228] device_add (drivers/base/core.c:3672) 
[ 23.540665][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 23.540895][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 23.541145][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 23.541433][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 23.541732][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 23.541973][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 23.542269][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 23.542501][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 23.542758][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 23.542953][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 23.543200][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 23.543430][ T228] ? 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) 
[ 23.543667][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 23.543929][ T228] ksys_write (fs/read_write.c:731) 
[ 23.544131][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 23.544369][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 23.544622][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 23.544869][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.545172][  T228] RIP: 0033:0x7fa8151b1b77
[ 23.545423][ T228] 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
[   23.546268][  T228] RSP: 002b:00007ffc43bc7f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   23.546643][  T228] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fa8151b1b77
[   23.546994][  T228] RDX: 0000000000000005 RSI: 00005560b505f340 RDI: 0000000000000001
[   23.547352][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[   23.547699][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000005
[   23.548067][  T228] R13: 00007fa81526d760 R14: 0000000000000005 R15: 00007fa8152689c0
| [   23.607526][  T228] ------------[ cut here ]------------
| [ 23.608075][ T228] WARNING: CPU: 2 PID: 228 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) 
| [   23.608756][  T228] Modules linked in: netdevsim [last unloaded: netdevsim]
| [   23.609879][  T228] Tainted: [W]=WARN
[   23.610518][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 23.610966][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 23.611418][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[   23.612552][  T228] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[   23.612977][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   23.613481][  T228] RDX: 0000000000000000 RSI: ffff888008822c98 RDI: ffff88800b84ade8
[   23.613982][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[   23.614488][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[   23.614983][  T228] R13: ffff888008822128 R14: ffff888008822008 R15: ffff888008822000
[   23.615505][  T228] FS:  00007fa815070740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[   23.616108][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   23.616563][  T228] CR2: 00007fa815224733 CR3: 00000000089ba002 CR4: 0000000000772ef0
[   23.617044][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   23.617550][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   23.618041][  T228] PKRU: 55555554
[   23.618632][  T228] Call Trace:
[   23.619091][  T228]  <TASK>
[ 23.619298][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 23.619640][ T228] ? __warn (kernel/panic.c:748) 
[ 23.619903][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 23.620272][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 23.620626][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 23.620899][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 23.621263][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 23.621628][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 23.621992][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 23.622439][ T228] ? _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) 
[ 23.622797][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 23.623164][ T228] register_netdevice (net/core/dev.c:11003) 
[ 23.623525][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 23.623890][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 23.624280][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 23.624765][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 23.625274][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 23.625732][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 23.626121][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 23.626451][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 23.626834][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 23.627108][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 23.627335][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 23.627559][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 23.627809][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 23.627976][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 23.628197][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 23.628408][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 23.628622][ T228] ksys_write (fs/read_write.c:731) 
[ 23.628780][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 23.628995][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 23.629212][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   23.629491][  T228] RIP: 0033:0x7fa8151b1b77
[ 23.629705][ T228] Code: Unable to access opcode bytes at 0x7fa8151b1b4d.

Code starting with the faulting instruction
===========================================
[   23.630005][  T228] RSP: 002b:00007ffc43bc7f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   23.630319][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fa8151b1b77
[   23.630614][  T228] RDX: 0000000000000002 RSI: 00005560b505f340 RDI: 0000000000000001
[   23.630914][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[   23.631222][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000002
[   23.631512][  T228] R13: 00007fa81526d760 R14: 0000000000000002 R15: 00007fa8152689c0
| [   30.058129][  T228] ------------[ cut here ]------------
| [ 30.058606][ T228] WARNING: CPU: 2 PID: 228 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) 
| [   30.059110][  T228] Modules linked in: netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   30.060036][  T228] Tainted: [W]=WARN
[   30.060257][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 30.060576][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 30.060893][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[   30.061820][  T228] RSP: 0018:ffffc90000ad7520 EFLAGS: 00010246
[   30.062166][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   30.062521][  T228] RDX: 0000000000000000 RSI: ffff888008bf2c98 RDI: ffff88800b84ae38
[   30.062886][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[   30.063256][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[   30.063613][  T228] R13: ffff888008bf2128 R14: ffff888008bf2008 R15: ffff888008bf2000
[   30.063982][  T228] FS:  00007fa815070740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[   30.064422][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   30.064743][  T228] CR2: 00007fa815224733 CR3: 00000000089ba004 CR4: 0000000000772ef0
[   30.065117][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   30.065799][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   30.066147][  T228] PKRU: 55555554
[   30.066357][  T228] Call Trace:
[   30.066581][  T228]  <TASK>
[ 30.066738][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 30.066993][ T228] ? __warn (kernel/panic.c:748) 
[ 30.067211][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 30.067469][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 30.067738][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 30.067928][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 30.068196][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 30.068462][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 30.068710][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 30.069007][ T228] ? _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) 
[ 30.069270][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 30.069518][ T228] register_netdevice (net/core/dev.c:11003) 
[ 30.069784][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 30.070125][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 30.070382][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 30.070683][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 30.070872][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 30.071191][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 30.071493][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 30.071795][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 30.072063][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 30.072358][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 30.072601][ T228] ? 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)) 
[ 30.072786][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 30.073030][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 30.073283][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 30.073534][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 30.073774][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 30.074014][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 30.074307][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 30.074544][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 30.074776][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 30.075015][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 30.075267][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 30.075511][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 30.075742][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 30.075975][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 30.076234][ T228] ? 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) 
[ 30.076504][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 30.076756][ T228] device_add (drivers/base/core.c:3672) 
[ 30.076999][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 30.077253][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 30.077504][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 30.077806][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 30.078144][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 30.078382][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 30.078631][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 30.078871][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 30.079126][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 30.079319][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 30.079561][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 30.079800][ T228] ? 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) 
[ 30.080047][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 30.080305][ T228] ksys_write (fs/read_write.c:731) 
[ 30.080486][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 30.080726][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 30.080977][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 30.081232][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   30.081520][  T228] RIP: 0033:0x7fa8151b1b77
[ 30.081770][ T228] 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
[   30.082556][  T228] RSP: 002b:00007ffc43bc7f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   30.082906][  T228] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fa8151b1b77
[   30.083259][  T228] RDX: 0000000000000005 RSI: 00005560b505f340 RDI: 0000000000000001
[   30.083604][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[   30.083953][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000005
[   30.084311][  T228] R13: 00007fa81526d760 R14: 0000000000000005 R15: 00007fa8152689c0
| [   30.125872][  T228] ------------[ cut here ]------------
| [ 30.126356][ T228] WARNING: CPU: 2 PID: 228 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) 
| [   30.126757][  T228] Modules linked in: netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   30.127575][  T228] Tainted: [W]=WARN
[   30.127735][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 30.127983][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 30.128256][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[   30.128923][  T228] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[   30.129189][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   30.129488][  T228] RDX: 0000000000000000 RSI: ffff888009192c98 RDI: ffff88800b84ade8
[   30.129784][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[   30.130127][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[   30.130423][  T228] R13: ffff888009192128 R14: ffff888009192008 R15: ffff888009192000
[   30.130733][  T228] FS:  00007fa815070740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[   30.131089][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   30.131343][  T228] CR2: 00007fa8151d04c0 CR3: 00000000089ba004 CR4: 0000000000772ef0
[   30.131653][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   30.132175][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   30.132477][  T228] PKRU: 55555554
[   30.132640][  T228] Call Trace:
[   30.132802][  T228]  <TASK>
[ 30.132934][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 30.133179][ T228] ? __warn (kernel/panic.c:748) 
[ 30.133343][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 30.133542][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 30.133790][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 30.133954][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 30.134171][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 30.134387][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 30.134597][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 30.134851][ T228] ? _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) 
[ 30.135069][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 30.135275][ T228] register_netdevice (net/core/dev.c:11003) 
[ 30.135480][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 30.135695][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 30.135932][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 30.136216][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 30.136497][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 30.136752][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 30.136958][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 30.137184][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 30.137440][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 30.137638][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 30.137846][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 30.138067][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 30.138277][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 30.138443][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 30.138644][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 30.138860][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 30.139090][ T228] ksys_write (fs/read_write.c:731) 
[ 30.139432][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 30.139667][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 30.139880][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   30.140139][  T228] RIP: 0033:0x7fa8151b1b77
[ 30.140351][ T228] 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
[   30.141147][  T228] RSP: 002b:00007ffc43bc5978 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   30.141443][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fa8151b1b77
[   30.141740][  T228] RDX: 0000000000000002 RSI: 00005560b505f340 RDI: 0000000000000001
[   30.142039][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[   30.142340][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000002
[   30.142745][  T228] R13: 00007fa81526d760 R14: 0000000000000002 R15: 00007fa8152689c0
| [   44.350223][  T228] ------------[ cut here ]------------
| [ 44.350584][ T228] WARNING: CPU: 0 PID: 228 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) 
| [   44.351227][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   44.352557][  T228] Tainted: [W]=WARN
[   44.352808][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 44.353209][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 44.353634][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[   44.354755][  T228] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[   44.355176][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   44.355656][  T228] RDX: 0000000000000000 RSI: ffff88800d9aac98 RDI: ffff88800b84ade8
[   44.356153][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[   44.356626][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[   44.357139][  T228] R13: ffff88800d9aa128 R14: ffff88800d9aa008 R15: ffff88800d9aa000
[   44.357631][  T228] FS:  00007fa815070740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[   44.358204][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   44.358600][  T228] CR2: 00007fa8151cecb0 CR3: 00000000089ba005 CR4: 0000000000772ef0
[   44.359131][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   44.359654][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   44.360173][  T228] PKRU: 55555554
[   44.360434][  T228] Call Trace:
[   44.360705][  T228]  <TASK>
[ 44.360884][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 44.361221][ T228] ? __warn (kernel/panic.c:748) 
[ 44.361468][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 44.361750][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 44.362121][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 44.362384][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 44.362727][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 44.363130][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 44.363483][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 44.363901][ T228] ? _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) 
[ 44.364277][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 44.364629][ T228] register_netdevice (net/core/dev.c:11003) 
[ 44.364983][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 44.365236][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 44.365462][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 44.365738][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 44.366064][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 44.366354][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 44.366558][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 44.366786][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 44.367047][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 44.367284][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 44.367497][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 44.367727][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 44.368121][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 44.368390][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 44.368725][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 44.369088][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 44.369312][ T228] ksys_write (fs/read_write.c:731) 
[ 44.369476][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 44.369698][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 44.369912][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   44.370178][  T228] RIP: 0033:0x7fa8151b1b77
[ 44.370388][ T228] 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
[   44.371127][  T228] RSP: 002b:00007ffc43bc5978 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   44.371434][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fa8151b1b77
[   44.371753][  T228] RDX: 0000000000000002 RSI: 00005560b505f340 RDI: 0000000000000001
[   44.372067][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[   44.372385][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000002
[   44.372696][  T228] R13: 00007fa81526d760 R14: 0000000000000002 R15: 00007fa8152689c0
| [   58.795417][  T228] ------------[ cut here ]------------
| [ 58.795801][ T228] WARNING: CPU: 3 PID: 228 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) 
| [   58.796413][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   58.797390][  T228] Tainted: [W]=WARN
[   58.797566][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 58.797853][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 58.798145][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[   58.798944][  T228] RSP: 0018:ffffc90000ad7520 EFLAGS: 00010246
[   58.799238][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   58.799598][  T228] RDX: 0000000000000000 RSI: ffff88800a432c98 RDI: ffff88800b84ae38
[   58.799929][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[   58.800287][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[   58.800630][  T228] R13: ffff88800a432128 R14: ffff88800a432008 R15: ffff88800a432000
[   58.800934][  T228] FS:  00007fa815070740(0000) GS:ffff88802f580000(0000) knlGS:0000000000000000
[   58.801530][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   58.801810][  T228] CR2: 00007fa8151cecb0 CR3: 00000000089ba005 CR4: 0000000000772ef0
[   58.802160][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   58.802510][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   58.802840][  T228] PKRU: 55555554
[   58.803012][  T228] Call Trace:
[   58.803191][  T228]  <TASK>
[ 58.803321][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 58.803547][ T228] ? __warn (kernel/panic.c:748) 
[ 58.803718][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 58.803946][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 58.804193][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 58.804401][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 58.804625][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 58.804860][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 58.805102][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 58.805411][ T228] ? _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) 
[ 58.805714][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 58.805945][ T228] register_netdevice (net/core/dev.c:11003) 
[ 58.806201][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 58.806433][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 58.806659][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 58.806953][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 58.807128][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 58.807407][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 58.807694][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 58.807966][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 58.808200][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 58.808480][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 58.808731][ T228] ? 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)) 
[ 58.808916][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 58.809146][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 58.809383][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 58.809592][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 58.809798][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 58.810006][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 58.810303][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 58.810522][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 58.810726][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 58.810948][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 58.811198][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 58.811462][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 58.811686][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 58.811900][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 58.812139][ T228] ? 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) 
[ 58.812434][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 58.812666][ T228] device_add (drivers/base/core.c:3672) 
[ 58.812884][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 58.813149][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 58.813387][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 58.813694][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 58.813972][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 58.814207][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 58.814434][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 58.814638][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 58.814864][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 58.815030][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 58.815277][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 58.815506][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 58.815754][ T228] ksys_write (fs/read_write.c:731) 
[ 58.815921][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 58.816203][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 58.816439][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   58.816726][  T228] RIP: 0033:0x7fa8151b1b77
[ 58.816946][ T228] 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
[   58.817835][  T228] RSP: 002b:00007ffc43bc7f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   58.818170][  T228] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fa8151b1b77
[   58.818516][  T228] RDX: 0000000000000005 RSI: 00005560b505f340 RDI: 0000000000000001
[   58.818818][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[   58.819132][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000005
[   58.819443][  T228] R13: 00007fa81526d760 R14: 0000000000000005 R15: 00007fa8152689c0
| [   58.889754][  T228] ------------[ cut here ]------------
| [ 58.890281][ T228] WARNING: CPU: 0 PID: 228 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) 
| [   58.890912][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   58.892271][  T228] Tainted: [W]=WARN
[   58.892552][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 58.892935][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 58.893353][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[   58.894441][  T228] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[   58.894848][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   58.895327][  T228] RDX: 0000000000000000 RSI: ffff88800b742c98 RDI: ffff88800b84ade8
[   58.895784][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[   58.896280][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[   58.896748][  T228] R13: ffff88800b742128 R14: ffff88800b742008 R15: ffff88800b742000
[   58.897238][  T228] FS:  00007fa815070740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[   58.897767][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   58.898178][  T228] CR2: 00007ffc43bc5f88 CR3: 00000000089ba004 CR4: 0000000000772ef0
[   58.898646][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   58.899139][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   58.899858][  T228] PKRU: 55555554
[   58.900105][  T228] Call Trace:
[   58.900341][  T228]  <TASK>
[ 58.900503][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 58.900823][ T228] ? __warn (kernel/panic.c:748) 
[ 58.901085][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 58.901411][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 58.901737][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 58.901982][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 58.902337][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 58.902683][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 58.903020][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 58.903438][ T228] ? _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) 
[ 58.903760][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 58.904107][ T228] register_netdevice (net/core/dev.c:11003) 
[ 58.904424][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 58.904763][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 58.905135][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 58.905548][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 58.905978][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 58.906418][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 58.907244][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 58.907592][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 58.908006][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 58.908549][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 58.908883][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 58.909435][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 58.909798][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 58.910089][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 58.910434][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 58.910787][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 58.911145][ T228] ksys_write (fs/read_write.c:731) 
[ 58.911401][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 58.911750][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 58.912121][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   58.912522][  T228] RIP: 0033:0x7fa8151b1b77
[ 58.912863][ T228] Code: Unable to access opcode bytes at 0x7fa8151b1b4d.

Code starting with the faulting instruction
===========================================
[   58.913284][  T228] RSP: 002b:00007ffc43bc5978 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   58.913762][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fa8151b1b77
[   58.914454][  T228] RDX: 0000000000000002 RSI: 00005560b505f340 RDI: 0000000000000001
[   58.914932][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[   58.915420][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000002
[   58.915883][  T228] R13: 00007fa81526d760 R14: 0000000000000002 R15: 00007fa8152689c0
| [   73.624913][  T228] ------------[ cut here ]------------
| [ 73.625298][ T228] WARNING: CPU: 3 PID: 228 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) 
| [   73.625823][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   73.626914][  T228] Tainted: [W]=WARN
[   73.627107][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 73.627434][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 73.627749][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[   73.628800][  T228] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[   73.629173][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   73.629598][  T228] RDX: 0000000000000000 RSI: ffff88800a412c98 RDI: ffff88800b84ade8
[   73.629956][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[   73.630371][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[   73.630786][  T228] R13: ffff88800a412128 R14: ffff88800a412008 R15: ffff88800a412000
[   73.631158][  T228] FS:  00007fa815070740(0000) GS:ffff88802f580000(0000) knlGS:0000000000000000
[   73.631632][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   73.632024][  T228] CR2: 00007fa8151cecb0 CR3: 00000000089ba002 CR4: 0000000000772ef0
[   73.632422][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   73.632837][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   73.633207][  T228] PKRU: 55555554
[   73.633386][  T228] Call Trace:
[   73.633565][  T228]  <TASK>
[ 73.633685][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 73.633933][ T228] ? __warn (kernel/panic.c:748) 
[ 73.634124][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 73.634363][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 73.634608][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 73.634822][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 73.635122][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 73.635416][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 73.635733][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 73.636205][ T228] ? _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) 
[ 73.636574][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 73.636922][ T228] register_netdevice (net/core/dev.c:11003) 
[ 73.637285][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 73.637658][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 73.638072][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 73.638525][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 73.639003][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 73.639479][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 73.639831][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 73.640219][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 73.640650][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 73.640994][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 73.641372][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 73.641731][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 73.642116][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 73.642409][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 73.642765][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 73.643156][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 73.643518][ T228] ksys_write (fs/read_write.c:731) 
[ 73.643781][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 73.644151][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 73.644445][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   73.644721][  T228] RIP: 0033:0x7fa8151b1b77
[ 73.645005][ T228] 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
[   73.645835][  T228] RSP: 002b:00007ffc43bc5978 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   73.646289][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fa8151b1b77
[   73.646687][  T228] RDX: 0000000000000002 RSI: 00005560b505f340 RDI: 0000000000000001
[   73.647073][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[   73.647459][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000002
[   73.647807][  T228] R13: 00007fa81526d760 R14: 0000000000000002 R15: 00007fa8152689c0
| [   87.869028][  T228] ------------[ cut here ]------------
| [ 87.869428][ T228] WARNING: CPU: 3 PID: 228 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) 
| [   87.869886][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   87.870920][  T228] Tainted: [W]=WARN
[   87.871116][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 87.871432][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 87.871743][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[   87.872913][  T228] RSP: 0018:ffffc90000ad7520 EFLAGS: 00010246
[   87.873265][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   87.873654][  T228] RDX: 0000000000000000 RSI: ffff888005912c98 RDI: ffff88800b84ae38
[   87.874020][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[   87.874404][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[   87.874790][  T228] R13: ffff888005912128 R14: ffff888005912008 R15: ffff888005912000
[   87.875193][  T228] FS:  00007fa815070740(0000) GS:ffff88802f580000(0000) knlGS:0000000000000000
[   87.875591][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   87.875890][  T228] CR2: 00007f220a813000 CR3: 00000000089ba002 CR4: 0000000000772ef0
[   87.876256][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   87.876618][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   87.877023][  T228] PKRU: 55555554
[   87.877218][  T228] Call Trace:
[   87.877400][  T228]  <TASK>
[ 87.877531][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 87.877774][ T228] ? __warn (kernel/panic.c:748) 
[ 87.877950][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 87.878202][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 87.878439][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 87.878620][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 87.878847][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 87.879104][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 87.879364][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 87.879665][ T228] ? _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) 
[ 87.879914][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 87.880158][ T228] register_netdevice (net/core/dev.c:11003) 
[ 87.880395][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 87.880641][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 87.880885][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 87.881190][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 87.881373][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 87.881676][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 87.881974][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 87.882284][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 87.882527][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 87.882822][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 87.883068][ T228] ? 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)) 
[ 87.883252][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 87.883496][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 87.883788][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 87.884046][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 87.884321][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 87.884582][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 87.884895][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 87.885154][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 87.885406][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 87.885733][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 87.885988][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 87.886244][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 87.886502][ T228] ? 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) 
[ 87.886775][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 87.887063][ T228] device_add (drivers/base/core.c:3672) 
[ 87.887320][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 87.887573][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 87.887849][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 87.888184][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 87.888572][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 87.888823][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 87.889086][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 87.889345][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 87.889598][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 87.889788][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 87.890046][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 87.890314][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 87.890580][ T228] ksys_write (fs/read_write.c:731) 
[ 87.890769][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 87.891027][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 87.891299][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   87.891600][  T228] RIP: 0033:0x7fa8151b1b77
[ 87.891868][ T228] 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
[   87.892832][  T228] RSP: 002b:00007ffc43bc7f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   87.893284][  T228] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fa8151b1b77
[   87.893867][  T228] RDX: 0000000000000005 RSI: 00005560b505f340 RDI: 0000000000000001
[   87.894427][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[   87.894945][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000005
[   87.895519][  T228] R13: 00007fa81526d760 R14: 0000000000000005 R15: 00007fa8152689c0
| [   87.965584][  T228] ------------[ cut here ]------------
| [ 87.965976][ T228] WARNING: CPU: 1 PID: 228 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) 
| [   87.966415][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   87.967303][  T228] Tainted: [W]=WARN
[   87.967466][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 87.967725][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 87.967999][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[   87.968760][  T228] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[   87.969027][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   87.969347][  T228] RDX: 0000000000000000 RSI: ffff888008822c98 RDI: ffff88800b84ade8
[   87.969668][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[   87.969980][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[   87.970326][  T228] R13: ffff888008822128 R14: ffff888008822008 R15: ffff888008822000
[   87.970658][  T228] FS:  00007fa815070740(0000) GS:ffff88802f480000(0000) knlGS:0000000000000000
[   87.971219][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   87.971480][  T228] CR2: 00007fe3a13507d0 CR3: 00000000089ba003 CR4: 0000000000772ef0
[   87.971797][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   87.972117][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   87.972501][  T228] PKRU: 55555554
[   87.972661][  T228] Call Trace:
[   87.972818][  T228]  <TASK>
[ 87.972923][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 87.973145][ T228] ? __warn (kernel/panic.c:748) 
[ 87.973306][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 87.973510][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 87.973720][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 87.973876][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 87.974096][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 87.974318][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 87.974530][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 87.974791][ T228] ? _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) 
[ 87.975006][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 87.975226][ T228] register_netdevice (net/core/dev.c:11003) 
[ 87.975445][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 87.975662][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 87.975901][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 87.976178][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 87.976456][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 87.976718][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 87.976932][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 87.977161][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 87.977421][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 87.977625][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 87.977831][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 87.978039][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 87.978261][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 87.978432][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 87.978640][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 87.978854][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 87.979082][ T228] ksys_write (fs/read_write.c:731) 
[ 87.979240][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 87.979475][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 87.979682][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   87.979931][  T228] RIP: 0033:0x7fa8151b1b77
[ 87.980176][ T228] 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
[   87.980881][  T228] RSP: 002b:00007ffc43bc7268 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   87.981200][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fa8151b1b77
[   87.981513][  T228] RDX: 0000000000000002 RSI: 00005560b505f340 RDI: 0000000000000001
[   87.981816][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[   87.982127][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000002
[   87.982431][  T228] R13: 00007fa81526d760 R14: 0000000000000002 R15: 00007fa8152689c0
| [   96.467203][  T228] ------------[ cut here ]------------
| [ 96.467503][ T228] WARNING: CPU: 0 PID: 228 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) 
| [   96.467918][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   96.468802][  T228] Tainted: [W]=WARN
[   96.469046][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 96.469475][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 96.469914][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[   96.471313][  T228] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[   96.471753][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   96.472276][  T228] RDX: 0000000000000000 RSI: ffff888008bf2c98 RDI: ffff88800b84ade8
[   96.472784][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[   96.473306][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[   96.473834][  T228] R13: ffff888008bf2128 R14: ffff888008bf2008 R15: ffff888008bf2000
[   96.474358][  T228] FS:  00007fa815070740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[   96.474970][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   96.475424][  T228] CR2: 00007fa8151cecb0 CR3: 00000000089ba006 CR4: 0000000000772ef0
[   96.475959][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   96.476483][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   96.476988][  T228] PKRU: 55555554
[   96.477260][  T228] Call Trace:
[   96.477518][  T228]  <TASK>
[ 96.477694][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 96.478041][ T228] ? __warn (kernel/panic.c:748) 
[ 96.478317][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 96.478670][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 96.479035][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 96.479318][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 96.479679][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 96.480078][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 96.480454][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 96.480911][ T228] ? _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) 
[ 96.481290][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 96.481663][ T228] register_netdevice (net/core/dev.c:11003) 
[ 96.482027][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 96.482410][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 96.482796][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 96.483284][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 96.483782][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 96.484266][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 96.484635][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 96.485019][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 96.485501][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 96.485882][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 96.486263][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 96.486617][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 96.486988][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 96.487287][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 96.487665][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 96.488038][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 96.488408][ T228] ksys_write (fs/read_write.c:731) 
[ 96.488685][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 96.489072][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 96.489407][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   96.489841][  T228] RIP: 0033:0x7fa8151b1b77
[ 96.490247][ T228] 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
[   96.491489][  T228] RSP: 002b:00007ffc43bc7268 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   96.492027][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fa8151b1b77
[   96.492584][  T228] RDX: 0000000000000002 RSI: 00005560b505f340 RDI: 0000000000000001
[   96.493210][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[   96.493728][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000002
[   96.494235][  T228] R13: 00007fa81526d760 R14: 0000000000000002 R15: 00007fa8152689c0
| [  104.369737][  T228] ------------[ cut here ]------------
| [ 104.370115][ T228] WARNING: CPU: 1 PID: 228 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) 
| [  104.370635][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  104.371491][  T228] Tainted: [W]=WARN
[  104.371652][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 104.371907][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 104.372179][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[  104.372906][  T228] RSP: 0018:ffffc90000ad7520 EFLAGS: 00010246
[  104.373201][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  104.373511][  T228] RDX: 0000000000000000 RSI: ffff888009192c98 RDI: ffff88800b84ae38
[  104.373843][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[  104.374160][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[  104.374463][  T228] R13: ffff888009192128 R14: ffff888009192008 R15: ffff888009192000
[  104.374776][  T228] FS:  00007fa815070740(0000) GS:ffff88802f480000(0000) knlGS:0000000000000000
[  104.375193][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  104.375457][  T228] CR2: 00007fee38d5e000 CR3: 00000000089ba004 CR4: 0000000000772ef0
[  104.375783][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  104.376106][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  104.376413][  T228] PKRU: 55555554
[  104.376570][  T228] Call Trace:
[  104.376730][  T228]  <TASK>
[ 104.376836][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 104.377044][ T228] ? __warn (kernel/panic.c:748) 
[ 104.377217][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 104.377429][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 104.377647][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 104.377806][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 104.378016][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 104.378250][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 104.378477][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 104.378744][ T228] ? _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) 
[ 104.378972][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 104.379207][ T228] register_netdevice (net/core/dev.c:11003) 
[ 104.379424][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 104.379644][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 104.379868][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 104.380148][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 104.380307][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 104.380577][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 104.380850][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 104.381138][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 104.381363][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 104.381640][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 104.381868][ T228] ? 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)) 
[ 104.382026][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 104.382267][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 104.382490][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 104.382705][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 104.382916][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 104.383144][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 104.383402][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 104.383627][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 104.383878][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 104.384099][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 104.384308][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 104.384518][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 104.384721][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 104.384922][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 104.385136][ T228] ? 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) 
[ 104.385357][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 104.385567][ T228] device_add (drivers/base/core.c:3672) 
[ 104.385785][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 104.385992][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 104.386217][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 104.386483][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 104.386749][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 104.386958][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 104.387184][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 104.387390][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 104.387600][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 104.387765][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 104.387975][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 104.388199][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 104.388412][ T228] ksys_write (fs/read_write.c:731) 
[ 104.388577][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 104.388801][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 104.389009][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  104.389269][  T228] RIP: 0033:0x7fa8151b1b77
[ 104.389481][ T228] 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
[  104.390200][  T228] RSP: 002b:00007ffc43bc7f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  104.390510][  T228] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fa8151b1b77
[  104.390810][  T228] RDX: 0000000000000005 RSI: 00005560b505f340 RDI: 0000000000000001
[  104.391126][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[  104.391441][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000005
[  104.391743][  T228] R13: 00007fa81526d760 R14: 0000000000000005 R15: 00007fa8152689c0
| [  104.424776][  T228] ------------[ cut here ]------------
| [ 104.425134][ T228] WARNING: CPU: 1 PID: 228 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) 
| [  104.425512][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  104.426324][  T228] Tainted: [W]=WARN
[  104.426469][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 104.426727][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 104.426970][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[  104.427618][  T228] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  104.427856][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  104.428149][  T228] RDX: 0000000000000000 RSI: ffff88800d9aac98 RDI: ffff88800b84ade8
[  104.428430][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[  104.428717][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[  104.428997][  T228] R13: ffff88800d9aa128 R14: ffff88800d9aa008 R15: ffff88800d9aa000
[  104.429295][  T228] FS:  00007fa815070740(0000) GS:ffff88802f480000(0000) knlGS:0000000000000000
[  104.429621][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  104.429856][  T228] CR2: 00007ffc43bc5f88 CR3: 00000000089ba004 CR4: 0000000000772ef0
[  104.430150][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  104.430439][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  104.430856][  T228] PKRU: 55555554
[  104.431010][  T228] Call Trace:
[  104.431165][  T228]  <TASK>
[ 104.431262][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 104.431449][ T228] ? __warn (kernel/panic.c:748) 
[ 104.431602][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 104.431790][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 104.431997][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 104.432151][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 104.432337][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 104.432537][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 104.432733][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 104.432980][ T228] ? _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) 
[ 104.433197][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 104.433398][ T228] register_netdevice (net/core/dev.c:11003) 
[ 104.433592][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 104.433811][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 104.434023][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 104.434288][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 104.434556][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 104.434802][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 104.435002][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 104.435210][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 104.435454][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 104.435639][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 104.435840][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 104.436033][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 104.436244][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 104.436395][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 104.436586][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 104.436782][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 104.436976][ T228] ksys_write (fs/read_write.c:731) 
[ 104.437127][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 104.437353][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 104.437543][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  104.437786][  T228] RIP: 0033:0x7fa8151b1b77
[ 104.437984][ T228] 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
[  104.438669][  T228] RSP: 002b:00007ffc43bc55e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  104.438972][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fa8151b1b77
[  104.439269][  T228] RDX: 0000000000000002 RSI: 00005560b505f340 RDI: 0000000000000001
[  104.439548][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[  104.439836][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000002
[  104.440127][  T228] R13: 00007fa81526d760 R14: 0000000000000002 R15: 00007fa8152689c0
| [  107.345348][  T228] ------------[ cut here ]------------
| [ 107.345692][ T228] WARNING: CPU: 2 PID: 228 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) 
| [  107.346140][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  107.347251][  T228] Tainted: [W]=WARN
[  107.347442][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 107.347703][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 107.347969][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[  107.348712][  T228] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  107.348983][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  107.349312][  T228] RDX: 0000000000000000 RSI: ffff88800a432c98 RDI: ffff88800b84ade8
[  107.349635][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[  107.349939][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[  107.350270][  T228] R13: ffff88800a432128 R14: ffff88800a432008 R15: ffff88800a432000
[  107.350581][  T228] FS:  00007fa815070740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  107.350926][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  107.351225][  T228] CR2: 00007ffc43bc8034 CR3: 00000000089ba006 CR4: 0000000000772ef0
[  107.351537][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  107.351845][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  107.352200][  T228] PKRU: 55555554
[  107.352372][  T228] Call Trace:
[  107.352539][  T228]  <TASK>
[ 107.352670][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 107.352881][ T228] ? __warn (kernel/panic.c:748) 
[ 107.353065][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 107.353296][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 107.353572][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 107.353804][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 107.354047][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 107.354298][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 107.354526][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 107.354799][ T228] ? _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) 
[ 107.355029][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 107.355265][ T228] register_netdevice (net/core/dev.c:11003) 
[ 107.355497][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 107.355754][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 107.355994][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 107.356289][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 107.356581][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 107.356857][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 107.357085][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 107.357318][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 107.357597][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 107.357813][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 107.358029][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 107.358263][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 107.358493][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 107.358666][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 107.358886][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 107.359128][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 107.359367][ T228] ksys_write (fs/read_write.c:731) 
[ 107.359549][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 107.359777][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 107.359999][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  107.360297][  T228] RIP: 0033:0x7fa8151b1b77
[ 107.360593][ T228] 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
[  107.361577][  T228] RSP: 002b:00007ffc43bc55e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  107.362125][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fa8151b1b77
[  107.362621][  T228] RDX: 0000000000000002 RSI: 00005560b505f340 RDI: 0000000000000001
[  107.363136][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[  107.363665][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000002
[  107.364184][  T228] R13: 00007fa81526d760 R14: 0000000000000002 R15: 00007fa8152689c0
| [  110.171977][  T228] ------------[ cut here ]------------
| [ 110.174194][ T228] WARNING: CPU: 1 PID: 228 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) 
| [  110.174651][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  110.175695][  T228] Tainted: [W]=WARN
[  110.175878][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 110.176326][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 110.176609][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[  110.177389][  T228] RSP: 0018:ffffc90000ad7520 EFLAGS: 00010246
[  110.177669][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  110.178002][  T228] RDX: 0000000000000000 RSI: ffff88800b742c98 RDI: ffff88800b84ae38
[  110.178356][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[  110.178676][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[  110.179002][  T228] R13: ffff88800b742128 R14: ffff88800b742008 R15: ffff88800b742000
[  110.179362][  T228] FS:  00007fa815070740(0000) GS:ffff88802f480000(0000) knlGS:0000000000000000
[  110.179755][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  110.180035][  T228] CR2: 0000555a83169148 CR3: 00000000089ba003 CR4: 0000000000772ef0
[  110.180396][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  110.180732][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  110.181078][  T228] PKRU: 55555554
[  110.181255][  T228] Call Trace:
[  110.181423][  T228]  <TASK>
[ 110.181544][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 110.181769][ T228] ? __warn (kernel/panic.c:748) 
[ 110.181943][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 110.182412][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 110.182647][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 110.182819][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 110.183046][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 110.183313][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 110.183541][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 110.183832][ T228] ? _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) 
[ 110.184087][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 110.184322][ T228] register_netdevice (net/core/dev.c:11003) 
[ 110.184551][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 110.184783][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 110.185028][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 110.185337][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 110.185513][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 110.185818][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 110.186125][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 110.186416][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 110.186649][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 110.186931][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 110.187205][ T228] ? 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)) 
[ 110.187375][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 110.187608][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 110.187843][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 110.188079][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 110.188300][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 110.188522][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 110.188791][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 110.189013][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 110.189241][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 110.189465][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 110.189692][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 110.189970][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 110.190200][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 110.190421][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 110.190644][ T228] ? 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) 
[ 110.190875][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 110.191111][ T228] device_add (drivers/base/core.c:3672) 
[ 110.191337][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 110.191557][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 110.191797][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 110.192099][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 110.192388][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 110.192604][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 110.192831][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 110.193049][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 110.193292][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 110.193469][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 110.193695][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 110.193923][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 110.194160][ T228] ksys_write (fs/read_write.c:731) 
[ 110.194329][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 110.194564][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 110.194784][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  110.195072][  T228] RIP: 0033:0x7fa8151b1b77
[ 110.195302][ T228] 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
[  110.196085][  T228] RSP: 002b:00007ffc43bc7f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  110.196414][  T228] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fa8151b1b77
[  110.196746][  T228] RDX: 0000000000000005 RSI: 00005560b505f340 RDI: 0000000000000001
[  110.197084][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[  110.197458][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000005
[  110.197785][  T228] R13: 00007fa81526d760 R14: 0000000000000005 R15: 00007fa8152689c0
| [  110.268649][  T228] ------------[ cut here ]------------
| [ 110.269202][ T228] WARNING: CPU: 0 PID: 228 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) 
| [  110.269827][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  110.271186][  T228] Tainted: [W]=WARN
[  110.271432][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 110.271823][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 110.272241][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[  110.273343][  T228] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  110.273728][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  110.274205][  T228] RDX: 0000000000000000 RSI: ffff88800a412c98 RDI: ffff88800b84ade8
[  110.274667][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[  110.275141][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[  110.275623][  T228] R13: ffff88800a412128 R14: ffff88800a412008 R15: ffff88800a412000
[  110.276107][  T228] FS:  00007fa815070740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[  110.276644][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  110.277033][  T228] CR2: 0000555ab259b4c8 CR3: 00000000089ba005 CR4: 0000000000772ef0
[  110.277936][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  110.278410][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  110.278873][  T228] PKRU: 55555554
[  110.279134][  T228] Call Trace:
[  110.279372][  T228]  <TASK>
[ 110.279533][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 110.279902][ T228] ? __warn (kernel/panic.c:748) 
[ 110.280170][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 110.280499][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 110.280831][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 110.281091][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 110.281406][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 110.281746][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 110.282099][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 110.282512][ T228] ? _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) 
[ 110.282841][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 110.283183][ T228] register_netdevice (net/core/dev.c:11003) 
[ 110.283511][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 110.283847][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 110.284221][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 110.284655][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 110.285130][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 110.285552][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 110.285885][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 110.286231][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 110.286644][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 110.286964][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 110.287302][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 110.287627][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 110.287950][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 110.288221][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 110.288548][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 110.288883][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 110.289235][ T228] ksys_write (fs/read_write.c:731) 
[ 110.289486][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 110.289822][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 110.290161][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  110.290547][  T228] RIP: 0033:0x7fa8151b1b77
[ 110.290878][ T228] Code: Unable to access opcode bytes at 0x7fa8151b1b4d.

Code starting with the faulting instruction
===========================================
[  110.291292][  T228] RSP: 002b:00007ffc43bc5aa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  110.291769][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fa8151b1b77
[  110.292239][  T228] RDX: 0000000000000002 RSI: 00005560b505f340 RDI: 0000000000000001
[  110.292695][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[  110.293179][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000002
[  110.293642][  T228] R13: 00007fa81526d760 R14: 0000000000000002 R15: 00007fa8152689c0
| [  112.939921][  T228] ------------[ cut here ]------------
| [ 112.940208][ T228] WARNING: CPU: 3 PID: 228 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) 
| [  112.940635][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  112.941455][  T228] Tainted: [W]=WARN
[  112.941610][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 112.941855][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 112.942133][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[  112.942837][  T228] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  112.943129][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  112.943431][  T228] RDX: 0000000000000000 RSI: ffff888005912c98 RDI: ffff88800b84ade8
[  112.943750][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[  112.944066][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[  112.944366][  T228] R13: ffff888005912128 R14: ffff888005912008 R15: ffff888005912000
[  112.944684][  T228] FS:  00007fa815070740(0000) GS:ffff88802f580000(0000) knlGS:0000000000000000
[  112.945023][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  112.945283][  T228] CR2: 00007fa8151cecb0 CR3: 00000000089ba003 CR4: 0000000000772ef0
[  112.945573][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  112.945903][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  112.946222][  T228] PKRU: 55555554
[  112.946382][  T228] Call Trace:
[  112.946542][  T228]  <TASK>
[ 112.946645][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 112.946867][ T228] ? __warn (kernel/panic.c:748) 
[ 112.947022][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 112.947249][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 112.947452][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 112.947625][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 112.947840][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 112.948047][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 112.948287][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 112.948552][ T228] ? _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) 
[ 112.948759][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 112.948969][ T228] register_netdevice (net/core/dev.c:11003) 
[ 112.949206][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 112.949413][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 112.949661][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 112.949914][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 112.950192][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 112.950469][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 112.950670][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 112.950885][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 112.951177][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 112.951375][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 112.951579][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 112.951780][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 112.951987][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 112.952171][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 112.952369][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 112.952580][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 112.952783][ T228] ksys_write (fs/read_write.c:731) 
[ 112.952931][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 112.953169][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 112.953376][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  112.953614][  T228] RIP: 0033:0x7fa8151b1b77
[ 112.953825][ T228] 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
[  112.954527][  T228] RSP: 002b:00007ffc43bc5aa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  112.954823][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fa8151b1b77
[  112.955120][  T228] RDX: 0000000000000002 RSI: 00005560b505f340 RDI: 0000000000000001
[  112.955418][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[  112.955725][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000002
[  112.956023][  T228] R13: 00007fa81526d760 R14: 0000000000000002 R15: 00007fa8152689c0
| [  115.493939][  T228] ------------[ cut here ]------------
| [ 115.495600][ T228] WARNING: CPU: 3 PID: 228 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) 
| [  115.496514][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  115.498424][  T228] Tainted: [W]=WARN
[  115.498726][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 115.499397][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 115.499886][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[  115.501267][  T228] RSP: 0018:ffffc90000ad7520 EFLAGS: 00010246
[  115.501761][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  115.502362][  T228] RDX: 0000000000000000 RSI: ffff888008822c98 RDI: ffff88800b84ae38
[  115.502939][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[  115.503525][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[  115.504111][  T228] R13: ffff888008822128 R14: ffff888008822008 R15: ffff888008822000
[  115.504695][  T228] FS:  00007fa815070740(0000) GS:ffff88802f580000(0000) knlGS:0000000000000000
[  115.505381][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  115.505868][  T228] CR2: 00007fa8151cecb0 CR3: 00000000089ba003 CR4: 0000000000772ef0
[  115.506466][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  115.507041][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  115.507633][  T228] PKRU: 55555554
[  115.507933][  T228] Call Trace:
[  115.508246][  T228]  <TASK>
[ 115.508446][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 115.508826][ T228] ? __warn (kernel/panic.c:748) 
[ 115.509150][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 115.509533][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 115.510355][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 115.510660][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 115.511039][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 115.511459][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 115.511869][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 115.512393][ T228] ? _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) 
[ 115.512791][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 115.513199][ T228] register_netdevice (net/core/dev.c:11003) 
[ 115.513658][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 115.514043][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 115.514478][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 115.514958][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 115.515276][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 115.515797][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 115.516316][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 115.516790][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 115.517211][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 115.517677][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 115.518042][ T228] ? 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)) 
[ 115.518350][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 115.518759][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 115.519185][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 115.519573][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 115.519941][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 115.520369][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 115.520829][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 115.521231][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 115.521623][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 115.522034][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 115.522431][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 115.522827][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 115.523233][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 115.523612][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 115.523990][ T228] ? 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) 
[ 115.524401][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 115.524803][ T228] device_add (drivers/base/core.c:3672) 
[ 115.525213][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 115.525605][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 115.526018][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 115.526543][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 115.527043][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 115.527450][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 115.527862][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 115.528272][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 115.528674][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 115.528983][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 115.529406][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 115.529822][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 115.530249][ T228] ksys_write (fs/read_write.c:731) 
[ 115.530556][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 115.530967][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 115.531378][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  115.531862][  T228] RIP: 0033:0x7fa8151b1b77
[ 115.532279][ T228] 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
[  115.533636][  T228] RSP: 002b:00007ffc43bc7f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  115.534241][  T228] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fa8151b1b77
[  115.534811][  T228] RDX: 0000000000000005 RSI: 00005560b505f340 RDI: 0000000000000001
[  115.535402][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[  115.535997][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000005
[  115.536588][  T228] R13: 00007fa81526d760 R14: 0000000000000005 R15: 00007fa8152689c0
| [  115.594493][  T228] ------------[ cut here ]------------
| [ 115.594844][ T228] WARNING: CPU: 0 PID: 228 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) 
| [  115.595279][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  115.596176][  T228] Tainted: [W]=WARN
[  115.596345][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 115.596619][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 115.596895][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[  115.597656][  T228] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  115.597924][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  115.598250][  T228] RDX: 0000000000000000 RSI: ffff88800b742c98 RDI: ffff88800b84ade8
[  115.598560][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[  115.598872][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[  115.599194][  T228] R13: ffff88800b742128 R14: ffff88800b742008 R15: ffff88800b742000
[  115.599512][  T228] FS:  00007fa815070740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[  115.599891][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  115.600174][  T228] CR2: 00007ffc43bc5f88 CR3: 00000000089ba005 CR4: 0000000000772ef0
[  115.600495][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  115.600817][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  115.601339][  T228] PKRU: 55555554
[  115.601514][  T228] Call Trace:
[  115.601678][  T228]  <TASK>
[ 115.601788][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 115.602007][ T228] ? __warn (kernel/panic.c:748) 
[ 115.602178][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 115.602386][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 115.602597][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 115.602769][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 115.603003][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 115.603229][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 115.603442][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 115.603699][ T228] ? _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) 
[ 115.603909][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 115.604130][ T228] register_netdevice (net/core/dev.c:11003) 
[ 115.604341][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 115.604574][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 115.604801][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 115.605085][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 115.605377][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 115.605650][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 115.605878][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 115.606113][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 115.606391][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 115.606603][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 115.606811][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 115.607016][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 115.607248][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 115.607416][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 115.607646][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 115.608026][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 115.608261][ T228] ksys_write (fs/read_write.c:731) 
[ 115.608421][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 115.608634][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 115.608842][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  115.609111][  T228] RIP: 0033:0x7fa8151b1b77
[ 115.609338][ T228] 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
[  115.610321][  T228] RSP: 002b:00007ffc43bc55e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  115.610644][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fa8151b1b77
[  115.610955][  T228] RDX: 0000000000000002 RSI: 00005560b505f340 RDI: 0000000000000001
[  115.611285][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[  115.611601][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000002
[  115.611902][  T228] R13: 00007fa81526d760 R14: 0000000000000002 R15: 00007fa8152689c0
| [  118.178947][  T228] ------------[ cut here ]------------
| [ 118.179325][ T228] WARNING: CPU: 2 PID: 228 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) 
| [  118.179753][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  118.180674][  T228] Tainted: [W]=WARN
[  118.180861][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 118.181152][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 118.181440][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[  118.182192][  T228] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  118.182473][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  118.182786][  T228] RDX: 0000000000000000 RSI: ffff888009192c98 RDI: ffff88800b84ade8
[  118.183120][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[  118.183444][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[  118.183762][  T228] R13: ffff888009192128 R14: ffff888009192008 R15: ffff888009192000
[  118.184089][  T228] FS:  00007fa815070740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  118.184458][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  118.184738][  T228] CR2: 00007ffc43bc4dd0 CR3: 00000000089ba006 CR4: 0000000000772ef0
[  118.185092][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  118.185440][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  118.185790][  T228] PKRU: 55555554
[  118.185970][  T228] Call Trace:
[  118.186162][  T228]  <TASK>
[ 118.186290][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 118.186534][ T228] ? __warn (kernel/panic.c:748) 
[ 118.186718][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 118.186959][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 118.187212][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 118.187404][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 118.187636][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 118.187885][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 118.188139][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 118.188439][ T228] ? _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) 
[ 118.188679][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 118.188917][ T228] register_netdevice (net/core/dev.c:11003) 
[ 118.189163][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 118.189422][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 118.189675][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 118.189985][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 118.190525][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 118.190830][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 118.191085][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 118.191339][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 118.191649][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 118.191881][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 118.192131][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 118.192374][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 118.192613][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 118.192851][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 118.193188][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 118.193483][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 118.193834][ T228] ksys_write (fs/read_write.c:731) 
[ 118.194125][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 118.194405][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 118.194642][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  118.194919][  T228] RIP: 0033:0x7fa8151b1b77
[ 118.195162][ T228] 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
[  118.195917][  T228] RSP: 002b:00007ffc43bc55e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  118.196264][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fa8151b1b77
[  118.196600][  T228] RDX: 0000000000000002 RSI: 00005560b505f340 RDI: 0000000000000001
[  118.196930][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[  118.197277][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000002
[  118.197615][  T228] R13: 00007fa81526d760 R14: 0000000000000002 R15: 00007fa8152689c0
| [  120.431368][  T228] ------------[ cut here ]------------
| [ 120.431827][ T228] WARNING: CPU: 0 PID: 228 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) 
| [  120.432481][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  120.433412][  T228] Tainted: [W]=WARN
[  120.433582][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 120.433866][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.434182][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[  120.434961][  T228] RSP: 0018:ffffc90000ad7520 EFLAGS: 00010246
[  120.435322][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  120.435718][  T228] RDX: 0000000000000000 RSI: ffff88800d9aac98 RDI: ffff88800b84ae38
[  120.436103][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[  120.436502][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[  120.436932][  T228] R13: ffff88800d9aa128 R14: ffff88800d9aa008 R15: ffff88800d9aa000
[  120.437324][  T228] FS:  00007fa815070740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[  120.437770][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  120.438082][  T228] CR2: 00007ff50a0b81b4 CR3: 00000000089ba003 CR4: 0000000000772ef0
[  120.438422][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  120.438756][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  120.439113][  T228] PKRU: 55555554
[  120.439284][  T228] Call Trace:
[  120.439454][  T228]  <TASK>
[ 120.439570][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.439800][ T228] ? __warn (kernel/panic.c:748) 
[ 120.439974][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.440325][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 120.440565][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 120.440739][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 120.440964][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 120.441239][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.441539][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 120.441828][ T228] ? _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) 
[ 120.442087][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 120.442349][ T228] register_netdevice (net/core/dev.c:11003) 
[ 120.442641][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 120.442879][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 120.443158][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 120.443513][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 120.443743][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 120.444102][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 120.444477][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 120.444827][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 120.445165][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 120.445457][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 120.445699][ T228] ? 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)) 
[ 120.445893][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 120.446143][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 120.446366][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 120.446611][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 120.446844][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 120.447154][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 120.447519][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 120.447801][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 120.448121][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 120.448501][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 120.448863][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 120.449242][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 120.449594][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 120.449949][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 120.450320][ T228] ? 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) 
[ 120.450684][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 120.451040][ T228] device_add (drivers/base/core.c:3672) 
[ 120.451416][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 120.451784][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 120.452171][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 120.452638][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 120.453112][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 120.453465][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 120.453829][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 120.454209][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 120.454571][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 120.454851][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 120.455238][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 120.455555][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 120.455845][ T228] ksys_write (fs/read_write.c:731) 
[ 120.456017][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 120.456249][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 120.456471][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  120.456829][  T228] RIP: 0033:0x7fa8151b1b77
[ 120.457121][ T228] 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
[  120.458083][  T228] RSP: 002b:00007ffc43bc7f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  120.458404][  T228] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fa8151b1b77
[  120.458779][  T228] RDX: 0000000000000005 RSI: 00005560b505f340 RDI: 0000000000000001
[  120.459177][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[  120.459583][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000005
[  120.459904][  T228] R13: 00007fa81526d760 R14: 0000000000000005 R15: 00007fa8152689c0
| [  120.506197][  T228] ------------[ cut here ]------------
| [ 120.506538][ T228] WARNING: CPU: 3 PID: 228 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) 
| [  120.506974][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  120.507855][  T228] Tainted: [W]=WARN
[  120.508039][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 120.508305][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.508574][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[  120.509298][  T228] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  120.509566][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  120.509883][  T228] RDX: 0000000000000000 RSI: ffff888008bf2c98 RDI: ffff88800b84ade8
[  120.510247][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[  120.510555][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[  120.510878][  T228] R13: ffff888008bf2128 R14: ffff888008bf2008 R15: ffff888008bf2000
[  120.511195][  T228] FS:  00007fa815070740(0000) GS:ffff88802f580000(0000) knlGS:0000000000000000
[  120.511552][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  120.511800][  T228] CR2: 00005560b5036000 CR3: 00000000089ba004 CR4: 0000000000772ef0
[  120.512116][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  120.512604][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  120.512900][  T228] PKRU: 55555554
[  120.513068][  T228] Call Trace:
[  120.513223][  T228]  <TASK>
[ 120.513326][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.513531][ T228] ? __warn (kernel/panic.c:748) 
[ 120.513690][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.513926][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 120.514202][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 120.514369][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 120.514577][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 120.514796][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 120.515023][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 120.515306][ T228] ? _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) 
[ 120.515516][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 120.515738][ T228] register_netdevice (net/core/dev.c:11003) 
[ 120.515950][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 120.516181][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 120.516408][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 120.516679][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 120.516965][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 120.517251][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 120.517460][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 120.517674][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 120.517969][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 120.518199][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 120.518412][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 120.518620][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 120.518836][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 120.519013][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 120.519237][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 120.519458][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 120.519676][ T228] ksys_write (fs/read_write.c:731) 
[ 120.520009][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 120.520351][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 120.520565][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  120.520812][  T228] RIP: 0033:0x7fa8151b1b77
[ 120.521178][ T228] Code: Unable to access opcode bytes at 0x7fa8151b1b4d.

Code starting with the faulting instruction
===========================================
[  120.521445][  T228] RSP: 002b:00007ffc43bc5848 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  120.521761][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fa8151b1b77
[  120.522261][  T228] RDX: 0000000000000002 RSI: 00005560b505f340 RDI: 0000000000000001
[  120.522558][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[  120.522990][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000002
[  120.523320][  T228] R13: 00007fa81526d760 R14: 0000000000000002 R15: 00007fa8152689c0
| [  122.797603][  T228] ------------[ cut here ]------------
| [ 122.797888][ T228] WARNING: CPU: 2 PID: 228 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) 
| [  122.798334][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  122.799211][  T228] Tainted: [W]=WARN
[  122.799385][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 122.799660][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 122.799935][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[  122.800676][  T228] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  122.800950][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  122.801285][  T228] RDX: 0000000000000000 RSI: ffff88800a432c98 RDI: ffff88800b84ade8
[  122.801605][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[  122.801921][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[  122.802251][  T228] R13: ffff88800a432128 R14: ffff88800a432008 R15: ffff88800a432000
[  122.802567][  T228] FS:  00007fa815070740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  122.802930][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  122.804335][  T228] CR2: 00007ffc43bc8034 CR3: 00000000089ba005 CR4: 0000000000772ef0
[  122.804852][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  122.805311][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  122.805751][  T228] PKRU: 55555554
[  122.805947][  T228] Call Trace:
[  122.806129][  T228]  <TASK>
[ 122.806253][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 122.806470][ T228] ? __warn (kernel/panic.c:748) 
[ 122.806645][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 122.806864][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 122.807099][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 122.807268][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 122.807482][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 122.807711][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 122.807936][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 122.808219][ T228] ? _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) 
[ 122.808443][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 122.808663][ T228] register_netdevice (net/core/dev.c:11003) 
[ 122.808885][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 122.809126][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 122.809364][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 122.809643][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 122.809935][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 122.810220][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 122.810449][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 122.810681][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 122.810956][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 122.811190][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 122.811415][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 122.811637][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 122.811863][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 122.812047][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 122.812284][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 122.812519][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 122.812747][ T228] ksys_write (fs/read_write.c:731) 
[ 122.812918][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 122.813158][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 122.813387][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  122.813657][  T228] RIP: 0033:0x7fa8151b1b77
[ 122.813881][ T228] 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
[  122.814616][  T228] RSP: 002b:00007ffc43bc5848 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  122.814939][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fa8151b1b77
[  122.815271][  T228] RDX: 0000000000000002 RSI: 00005560b505f340 RDI: 0000000000000001
[  122.815593][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[  122.815933][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000002
[  122.816268][  T228] R13: 00007fa81526d760 R14: 0000000000000002 R15: 00007fa8152689c0
| [  124.723803][  T228] ------------[ cut here ]------------
| [ 124.724228][ T228] WARNING: CPU: 0 PID: 228 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) 
| [  124.724730][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  124.725748][  T228] Tainted: [W]=WARN
[  124.725936][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 124.726255][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 124.726569][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[  124.727437][  T228] RSP: 0018:ffffc90000ad7520 EFLAGS: 00010246
[  124.727770][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  124.728153][  T228] RDX: 0000000000000000 RSI: ffff88800a412c98 RDI: ffff88800b84ae38
[  124.728520][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[  124.728890][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[  124.729266][  T228] R13: ffff88800a412128 R14: ffff88800a412008 R15: ffff88800a412000
[  124.729635][  T228] FS:  00007fa815070740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[  124.730068][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  124.730377][  T228] CR2: 00007f2ec8180000 CR3: 00000000089ba002 CR4: 0000000000772ef0
[  124.730942][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  124.731324][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  124.731695][  T228] PKRU: 55555554
[  124.731885][  T228] Call Trace:
[  124.732083][  T228]  <TASK>
[ 124.732215][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 124.732465][ T228] ? __warn (kernel/panic.c:748) 
[ 124.732655][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 124.732904][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 124.733170][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 124.733364][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 124.733611][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 124.733872][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 124.734148][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 124.734464][ T228] ? _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) 
[ 124.734718][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 124.734970][ T228] register_netdevice (net/core/dev.c:11003) 
[ 124.735233][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 124.735492][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 124.735776][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 124.736108][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 124.736298][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 124.736617][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 124.736938][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 124.737272][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 124.737532][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 124.737845][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 124.738108][ T228] ? 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)) 
[ 124.738307][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 124.738570][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 124.738827][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 124.739088][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 124.739342][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 124.739596][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 124.739906][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 124.740171][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 124.740422][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 124.740675][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 124.740976][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 124.741241][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 124.741491][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 124.741736][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 124.741994][ T228] ? 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) 
[ 124.742261][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 124.742514][ T228] device_add (drivers/base/core.c:3672) 
[ 124.742775][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 124.743019][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 124.743290][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 124.743613][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 124.743931][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 124.744190][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 124.744442][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 124.744690][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 124.744941][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 124.745147][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 124.745400][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 124.745668][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 124.745927][ T228] ksys_write (fs/read_write.c:731) 
[ 124.746127][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 124.746389][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 124.746645][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  124.746954][  T228] RIP: 0033:0x7fa8151b1b77
[ 124.747217][ T228] 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
[  124.748082][  T228] RSP: 002b:00007ffc43bc7f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  124.748455][  T228] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fa8151b1b77
[  124.748820][  T228] RDX: 0000000000000005 RSI: 00005560b505f340 RDI: 0000000000000001
[  124.749194][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[  124.749561][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000005
[  124.749930][  T228] R13: 00007fa81526d760 R14: 0000000000000005 R15: 00007fa8152689c0
| [  124.870666][  T228] ------------[ cut here ]------------
| [ 124.871021][ T228] WARNING: CPU: 0 PID: 228 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) 
| [  124.871512][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  124.872507][  T228] Tainted: [W]=WARN
[  124.872694][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 124.872976][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 124.873277][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[  124.874079][  T228] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  124.874370][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  124.874706][  T228] RDX: 0000000000000000 RSI: ffff888005912c98 RDI: ffff88800b84ade8
[  124.875045][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[  124.875402][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[  124.875764][  T228] R13: ffff888005912128 R14: ffff888005912008 R15: ffff888005912000
[  124.876125][  T228] FS:  00007fa815070740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[  124.876704][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  124.876997][  T228] CR2: 00005560b505f340 CR3: 00000000089ba002 CR4: 0000000000772ef0
[  124.877364][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  124.877704][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  124.878085][  T228] PKRU: 55555554
[  124.878259][  T228] Call Trace:
[  124.878431][  T228]  <TASK>
[ 124.878551][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 124.878781][ T228] ? __warn (kernel/panic.c:748) 
[ 124.878956][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 124.879206][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 124.879453][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 124.879629][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 124.879873][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 124.880137][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 124.880384][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 124.880684][ T228] ? _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) 
[ 124.880931][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 124.881176][ T228] register_netdevice (net/core/dev.c:11003) 
[ 124.881418][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 124.881664][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 124.881912][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 124.882217][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 124.882526][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 124.882821][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 124.883079][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 124.883326][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 124.883638][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 124.883872][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 124.884111][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 124.884342][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 124.884580][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 124.884772][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 124.885015][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 124.885256][ T228] ? 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) 
[ 124.885494][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 124.885747][ T228] ksys_write (fs/read_write.c:731) 
[ 124.885927][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 124.886169][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 124.886419][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 124.886650][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  124.886945][  T228] RIP: 0033:0x7fa8151b1b77
[ 124.887199][ T228] 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
[  124.888022][  T228] RSP: 002b:00007ffc43bc7f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  124.888381][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fa8151b1b77
[  124.888730][  T228] RDX: 0000000000000002 RSI: 00005560b505f340 RDI: 0000000000000001
[  124.889079][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[  124.889419][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000002
[  124.889767][  T228] R13: 00007fa81526d760 R14: 0000000000000002 R15: 00007fa8152689c0
| [  125.589709][  T228] ------------[ cut here ]------------
| [ 125.590090][ T228] WARNING: CPU: 0 PID: 228 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) 
| [  125.590701][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  125.591994][  T228] Tainted: [W]=WARN
[  125.592250][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 125.592622][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 125.593009][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[  125.594111][  T228] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  125.594504][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  125.594948][  T228] RDX: 0000000000000000 RSI: ffff888008822c98 RDI: ffff88800b84ade8
[  125.595445][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[  125.595905][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[  125.596386][  T228] R13: ffff888008822128 R14: ffff888008822008 R15: ffff888008822000
[  125.596842][  T228] FS:  00007fa815070740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[  125.597395][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  125.597784][  T228] CR2: 00005560b505f340 CR3: 00000000089ba004 CR4: 0000000000772ef0
[  125.598253][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  125.598713][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  125.599201][  T228] PKRU: 55555554
[  125.599431][  T228] Call Trace:
[  125.599650][  T228]  <TASK>
[ 125.599806][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 125.600131][ T228] ? __warn (kernel/panic.c:748) 
[ 125.600376][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 125.600691][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 125.601023][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 125.601280][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 125.601592][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 125.601932][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 125.602272][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 125.602657][ T228] ? _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) 
[ 125.602959][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 125.603287][ T228] register_netdevice (net/core/dev.c:11003) 
[ 125.603603][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 125.603937][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 125.604290][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 125.604690][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 125.605133][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 125.605530][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 125.605848][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 125.606207][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 125.606600][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 125.606900][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 125.607219][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 125.607526][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 125.607841][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 125.608100][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 125.608420][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 125.608733][ T228] ? 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) 
[ 125.609048][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 125.609393][ T228] ksys_write (fs/read_write.c:731) 
[ 125.609638][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 125.609950][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 125.610298][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 125.610628][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  125.611076][  T228] RIP: 0033:0x7fa8151b1b77
[ 125.611383][ T228] 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
[  125.612452][  T228] RSP: 002b:00007ffc43bc7f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  125.612919][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fa8151b1b77
[  125.613386][  T228] RDX: 0000000000000002 RSI: 00005560b505f340 RDI: 0000000000000001
[  125.613801][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[  125.614215][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000002
[  125.614663][  T228] R13: 00007fa81526d760 R14: 0000000000000002 R15: 00007fa8152689c0
| [  133.453169][  T228] ------------[ cut here ]------------
| [ 133.453411][ T228] WARNING: CPU: 1 PID: 228 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) 
| [  133.453793][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  133.454593][  T228] Tainted: [W]=WARN
[  133.454740][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 133.454970][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 133.455333][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[  133.456002][  T228] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  133.456254][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  133.456534][  T228] RDX: 0000000000000000 RSI: ffff88800b742c98 RDI: ffff88800b84ade8
[  133.456813][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[  133.457101][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[  133.457385][  T228] R13: ffff88800b742128 R14: ffff88800b742008 R15: ffff88800b742000
[  133.457664][  T228] FS:  00007fa815070740(0000) GS:ffff88802f480000(0000) knlGS:0000000000000000
[  133.457986][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  133.458248][  T228] CR2: 00007fe3a13321a0 CR3: 00000000089ba004 CR4: 0000000000772ef0
[  133.458532][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  133.458807][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  133.459117][  T228] PKRU: 55555554
[  133.459262][  T228] Call Trace:
[  133.459406][  T228]  <TASK>
[ 133.459506][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 133.459703][ T228] ? __warn (kernel/panic.c:748) 
[ 133.459851][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 133.460039][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 133.460246][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 133.460394][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 133.460585][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 133.460786][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 133.460986][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 133.461236][ T228] ? _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) 
[ 133.461432][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 133.461626][ T228] register_netdevice (net/core/dev.c:11003) 
[ 133.461819][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 133.462023][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 133.462244][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 133.462494][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 133.462752][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 133.462994][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 133.463195][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 133.463402][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 133.463642][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 133.463835][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 133.464026][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 133.464232][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 133.464426][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 133.464579][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 133.464771][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 133.464967][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 133.465175][ T228] ksys_write (fs/read_write.c:731) 
[ 133.465324][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 133.465521][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 133.465718][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  133.465963][  T228] RIP: 0033:0x7fa8151b1b77
[ 133.466197][ T228] 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
[  133.466844][  T228] RSP: 002b:00007ffc43bc7f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  133.467139][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fa8151b1b77
[  133.467423][  T228] RDX: 0000000000000002 RSI: 00005560b505f340 RDI: 0000000000000001
[  133.467697][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[  133.467970][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000002
[  133.468259][  T228] R13: 00007fa81526d760 R14: 0000000000000002 R15: 00007fa8152689c0
| [  136.049177][  T228] ------------[ cut here ]------------
| [ 136.049752][ T228] WARNING: CPU: 1 PID: 228 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) 
| [  136.050512][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  136.051999][  T228] Tainted: [W]=WARN
[  136.052312][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 136.052757][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 136.053242][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[  136.054487][  T228] RSP: 0018:ffffc90000ad7520 EFLAGS: 00010246
[  136.054920][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  136.055442][  T228] RDX: 0000000000000000 RSI: ffff888009192c98 RDI: ffff88800b84ae38
[  136.056029][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[  136.056752][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[  136.057308][  T228] R13: ffff888009192128 R14: ffff888009192008 R15: ffff888009192000
[  136.057857][  T228] FS:  00007fa815070740(0000) GS:ffff88802f480000(0000) knlGS:0000000000000000
[  136.058522][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  136.058983][  T228] CR2: 00007fe3a1523a00 CR3: 00000000089ba002 CR4: 0000000000772ef0
[  136.059553][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  136.060098][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  136.060616][  T228] PKRU: 55555554
[  136.061168][  T228] Call Trace:
[  136.061457][  T228]  <TASK>
[ 136.061651][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 136.062011][ T228] ? __warn (kernel/panic.c:748) 
[ 136.062309][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 136.062672][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 136.063075][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 136.063352][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 136.063717][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 136.064140][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 136.064527][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 136.064993][ T228] ? _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) 
[ 136.065385][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 136.065771][ T228] register_netdevice (net/core/dev.c:11003) 
[ 136.066184][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 136.066575][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 136.066935][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 136.067420][ T228] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 136.067710][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 136.068232][ T228] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 136.068708][ T228] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 136.069200][ T228] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 136.069596][ T228] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 136.070019][ T228] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 136.070399][ T228] ? 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)) 
[ 136.070693][ T228] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 136.071078][ T228] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 136.071496][ T228] __driver_probe_device (drivers/base/dd.c:800) 
[ 136.071871][ T228] driver_probe_device (drivers/base/dd.c:830) 
[ 136.072273][ T228] __device_attach_driver (drivers/base/dd.c:959) 
[ 136.072644][ T228] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 136.073116][ T228] bus_for_each_drv (drivers/base/bus.c:462) 
[ 136.073453][ T228] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 136.073802][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 136.074186][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 136.074529][ T228] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 136.074905][ T228] __device_attach (drivers/base/dd.c:1030) 
[ 136.075283][ T228] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 136.075636][ T228] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 136.075997][ T228] ? 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) 
[ 136.076381][ T228] bus_probe_device (drivers/base/bus.c:537) 
[ 136.076782][ T228] device_add (drivers/base/core.c:3672) 
[ 136.077160][ T228] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 136.077518][ T228] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 136.077901][ T228] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 136.078368][ T228] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 136.078812][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 136.079156][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 136.079522][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 136.079881][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 136.080236][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 136.080502][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 136.080871][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 136.081269][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 136.081650][ T228] ksys_write (fs/read_write.c:731) 
[ 136.081927][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 136.082339][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 136.082681][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  136.083125][  T228] RIP: 0033:0x7fa8151b1b77
[ 136.083496][ T228] 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
[  136.084680][  T228] RSP: 002b:00007ffc43bc7f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  136.085219][  T228] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fa8151b1b77
[  136.085761][  T228] RDX: 0000000000000005 RSI: 00005560b505f340 RDI: 0000000000000001
[  136.086308][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[  136.086837][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000005
[  136.087384][  T228] R13: 00007fa81526d760 R14: 0000000000000005 R15: 00007fa8152689c0
| [  136.259651][  T228] ------------[ cut here ]------------
| [ 136.260003][ T228] WARNING: CPU: 3 PID: 228 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) 
| [  136.260564][  T228] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  136.261567][  T228] Tainted: [W]=WARN
[  136.261760][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 136.262095][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 136.262438][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 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:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  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
[  136.263212][  T228] RSP: 0018:ffffc90000ad7910 EFLAGS: 00010246
[  136.263504][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  136.263861][  T228] RDX: 0000000000000000 RSI: ffff888008bf2c98 RDI: ffff88800b84ade8
[  136.264182][  T228] RBP: ffffffff94123440 R08: 0000000000000000 R09: fffffbfff23fd83c
[  136.264562][  T228] R10: ffffffff91fec1e7 R11: ffff88800b84a300 R12: 0000000000000000
[  136.264931][  T228] R13: ffff888008bf2128 R14: ffff888008bf2008 R15: ffff888008bf2000
[  136.265321][  T228] FS:  00007fa815070740(0000) GS:ffff88802f580000(0000) knlGS:0000000000000000
[  136.266014][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  136.266359][  T228] CR2: 00005560b505f340 CR3: 00000000089ba006 CR4: 0000000000772ef0
[  136.266692][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  136.267108][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  136.267484][  T228] PKRU: 55555554
[  136.267653][  T228] Call Trace:
[  136.267809][  T228]  <TASK>
[ 136.267950][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 136.268224][ T228] ? __warn (kernel/panic.c:748) 
[ 136.268410][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 136.268625][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 136.268841][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 136.268999][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 136.269211][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 136.269446][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 136.269664][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 136.269934][ T228] ? _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) 
[ 136.270164][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 136.270463][ T228] register_netdevice (net/core/dev.c:11003) 
[ 136.270677][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 136.270893][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 136.271135][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 136.271425][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 136.271705][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 136.272000][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 136.272226][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 136.272454][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 136.272727][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 136.272939][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 136.273184][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 136.273422][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 136.273635][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 136.273803][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 136.274021][ T228] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 136.274240][ T228] ? 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) 
[ 136.274468][ T228] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 136.274701][ T228] ksys_write (fs/read_write.c:731) 
[ 136.274862][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 136.275085][ T228] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 136.275323][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 136.275535][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  136.275874][  T228] RIP: 0033:0x7fa8151b1b77
[ 136.276116][ T228] 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
[  136.276967][  T228] RSP: 002b:00007ffc43bc7f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  136.277365][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fa8151b1b77
[  136.277706][  T228] RDX: 0000000000000002 RSI: 00005560b505f340 RDI: 0000000000000001
[  136.278070][  T228] RBP: 00005560b505f340 R08: 0000000000000000 R09: 00007fa8152244e0
[  136.278465][  T228] R10: 00007fa8152243e0 R11: 0000000000000246 R12: 0000000000000002


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