======================================
| 0
| xx__-> [   10.804233][  T227] ------------[ cut here ]------------
| [ 10.804633][ T227] WARNING: CPU: 1 PID: 227 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) 
| [   10.805287][  T227] Modules linked in: netdevsim
[   10.806179][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.806453][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.806826][ T227] 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
[   10.807761][  T227] RSP: 0018:ffffc90000b07520 EFLAGS: 00010246
[   10.808111][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.808525][  T227] RDX: 0000000000000000 RSI: ffff8880023e2c98 RDI: ffff8880061c0b78
[   10.808965][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[   10.809392][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[   10.809842][  T227] R13: ffff8880023e2128 R14: ffff8880023e2008 R15: ffff8880023e2000
[   10.810189][  T227] FS:  00007f56531fd740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   10.810636][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.810902][  T227] CR2: 000055c5d0600338 CR3: 000000000b8ea006 CR4: 0000000000772ef0
[   10.811346][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.811815][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.812316][  T227] PKRU: 55555554
[   10.812600][  T227] Call Trace:
[   10.812875][  T227]  <TASK>
[ 10.813073][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.813422][ T227] ? __warn (kernel/panic.c:748) 
[ 10.813682][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.813917][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.814135][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.814370][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.814693][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.814971][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.815237][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.815636][ T227] ? _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) 
[ 10.815859][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.816073][ T227] register_netdevice (net/core/dev.c:11003) 
[ 10.816310][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.816587][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.816884][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.817164][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 10.817327][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.817608][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.817925][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 10.818246][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 10.818473][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 10.818764][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 10.818978][ T227] ? 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)) 
[ 10.819136][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 10.819364][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 10.819640][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 10.819888][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 10.820163][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 10.820375][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 10.820695][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 10.820901][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 10.821146][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.821371][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.821664][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 10.822002][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 10.822242][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 10.822498][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.822758][ T227] ? 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) 
[ 10.822979][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 10.823203][ T227] device_add (drivers/base/core.c:3672) 
[ 10.823502][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 10.823716][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 10.823934][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 10.824279][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 10.824584][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.824792][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.825008][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.825229][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.825489][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.825730][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.825949][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 10.826231][ T227] ? 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) 
[ 10.826446][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 10.826674][ T227] ksys_write (fs/read_write.c:731) 
[ 10.826833][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.827041][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.827267][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.827490][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.827745][  T227] RIP: 0033:0x7f565333eb77
[ 10.828027][ T227] 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
[   10.828889][  T227] RSP: 002b:00007fff8f7eb2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.829297][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f565333eb77
[   10.829660][  T227] RDX: 0000000000000004 RSI: 000055c5d05ff330 RDI: 0000000000000001
[   10.829968][  T227] RBP: 000055c5d05ff330 R08: 0000000000000003 R09: 0000000000000077
[   10.830527][  T227] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000004
[   10.830840][  T227] R13: 00007f56533fa760 R14: 0000000000000004 R15: 00007f56533f59c0
| [   16.746464][  T227] ------------[ cut here ]------------
| [ 16.746816][ T227] WARNING: CPU: 0 PID: 227 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) 
| [   16.747459][  T227] Modules linked in: netdevsim [last unloaded: ip6_udp_tunnel]
| [   16.748381][  T227] Tainted: [W]=WARN
[   16.748596][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 16.748875][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 16.749172][ T227] 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
[   16.749953][  T227] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[   16.750251][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   16.750575][  T227] RDX: 0000000000000000 RSI: ffff8880025b2c98 RDI: ffff8880061c0b28
[   16.750905][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[   16.751259][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[   16.751599][  T227] R13: ffff8880025b2128 R14: ffff8880025b2008 R15: ffff8880025b2000
[   16.751939][  T227] FS:  00007f56531fd740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   16.752338][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   16.752620][  T227] CR2: 000055c5d05ff330 CR3: 000000000b8ea003 CR4: 0000000000772ef0
[   16.752947][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   16.753288][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   16.753629][  T227] PKRU: 55555554
[   16.753797][  T227] Call Trace:
[   16.753969][  T227]  <TASK>
[ 16.754084][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 16.754319][ T227] ? __warn (kernel/panic.c:748) 
[ 16.754496][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 16.754718][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 16.754953][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 16.755126][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 16.755370][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 16.755610][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 16.755850][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 16.756138][ T227] ? _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) 
[ 16.756385][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 16.756616][ T227] register_netdevice (net/core/dev.c:11003) 
[ 16.756880][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 16.757113][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 16.757364][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 16.757654][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 16.757959][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 16.758270][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 16.758545][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 16.758798][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 16.759136][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 16.759403][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 16.759659][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 16.759913][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 16.760176][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 16.760386][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 16.760633][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 16.760892][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 16.761144][ T227] ksys_write (fs/read_write.c:731) 
[ 16.761342][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 16.761615][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 16.761869][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   16.762220][  T227] RIP: 0033:0x7f565333eb77
[ 16.762505][ T227] 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
[   16.763333][  T227] RSP: 002b:00007fff8f7eb1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   16.763734][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f565333eb77
[   16.764105][  T227] RDX: 0000000000000002 RSI: 000055c5d05ff330 RDI: 0000000000000001
[   16.764511][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[   16.764951][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000002
[   16.765360][  T227] R13: 00007f56533fa760 R14: 0000000000000002 R15: 00007f56533f59c0
| [   22.780627][  T227] ------------[ cut here ]------------
| [ 22.781116][ T227] WARNING: CPU: 2 PID: 227 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) 
| [   22.781715][  T227] Modules linked in: netdevsim [last unloaded: netdevsim]
| [   22.782503][  T227] Tainted: [W]=WARN
[   22.782714][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.783001][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 22.783314][ T227] 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
[   22.784078][  T227] RSP: 0018:ffffc90000b07520 EFLAGS: 00010246
[   22.784388][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   22.784727][  T227] RDX: 0000000000000000 RSI: ffff88800255ac98 RDI: ffff8880061c0b78
[   22.785064][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[   22.785417][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[   22.785759][  T227] R13: ffff88800255a128 R14: ffff88800255a008 R15: ffff88800255a000
[   22.786101][  T227] FS:  00007f56531fd740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   22.786501][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.786786][  T227] CR2: 00007f56533b1733 CR3: 000000000b8ea002 CR4: 0000000000772ef0
[   22.787131][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   22.787482][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   22.787821][  T227] PKRU: 55555554
[   22.788001][  T227] Call Trace:
[   22.788191][  T227]  <TASK>
[ 22.788321][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 22.788573][ T227] ? __warn (kernel/panic.c:748) 
[ 22.788765][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 22.789001][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 22.789257][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 22.789440][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 22.789675][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 22.789919][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 22.790188][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 22.790486][ T227] ? _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) 
[ 22.790732][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 22.790971][ T227] register_netdevice (net/core/dev.c:11003) 
[ 22.791226][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 22.791471][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 22.791723][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 22.792020][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 22.792221][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 22.792523][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 22.792819][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 22.793113][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 22.793383][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 22.793674][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 22.793922][ T227] ? 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)) 
[ 22.794100][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 22.794355][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 22.794594][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 22.794829][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 22.795062][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 22.795310][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 22.795598][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 22.795830][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 22.796061][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 22.796304][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 22.796539][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 22.796776][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 22.797013][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 22.797258][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 22.797496][ T227] ? 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) 
[ 22.797735][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 22.797973][ T227] device_add (drivers/base/core.c:3672) 
[ 22.798218][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 22.798450][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 22.798701][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 22.799003][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 22.799311][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 22.799543][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 22.799782][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 22.800015][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 22.800263][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 22.800461][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 22.800704][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 22.800932][ T227] ? 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) 
[ 22.801185][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 22.801425][ T227] ksys_write (fs/read_write.c:731) 
[ 22.801607][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 22.801835][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 22.802080][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 22.802327][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.802618][  T227] RIP: 0033:0x7f565333eb77
[ 22.802857][ T227] 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
[   22.803634][  T227] RSP: 002b:00007fff8f7eea98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   22.803980][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f565333eb77
[   22.804330][  T227] RDX: 0000000000000004 RSI: 000055c5d05ff330 RDI: 0000000000000001
[   22.804669][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[   22.805006][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000004
[   22.805350][  T227] R13: 00007f56533fa760 R14: 0000000000000004 R15: 00007f56533f59c0
| [   22.860022][  T227] ------------[ cut here ]------------
| [ 22.860503][ T227] WARNING: CPU: 0 PID: 227 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) 
| [   22.861095][  T227] Modules linked in: netdevsim [last unloaded: netdevsim]
| [   22.862092][  T227] Tainted: [W]=WARN
[   22.862308][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.862672][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 22.863066][ T227] 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
[   22.864181][  T227] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[   22.864589][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   22.865056][  T227] RDX: 0000000000000000 RSI: ffff88800d432c98 RDI: ffff8880061c0b28
[   22.865548][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[   22.866025][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[   22.866505][  T227] R13: ffff88800d432128 R14: ffff88800d432008 R15: ffff88800d432000
[   22.866905][  T227] FS:  00007f56531fd740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   22.867264][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.867515][  T227] CR2: 00007fc76635c1b4 CR3: 000000000b8ea001 CR4: 0000000000772ef0
[   22.867832][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   22.868123][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   22.868668][  T227] PKRU: 55555554
[   22.868839][  T227] Call Trace:
[   22.868989][  T227]  <TASK>
[ 22.869097][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 22.869325][ T227] ? __warn (kernel/panic.c:748) 
[ 22.869483][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 22.869686][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 22.869921][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 22.870075][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 22.870289][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 22.870503][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 22.870723][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 22.870976][ T227] ? _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) 
[ 22.871200][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 22.871407][ T227] register_netdevice (net/core/dev.c:11003) 
[ 22.871615][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 22.871837][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 22.872061][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 22.872336][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 22.872607][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 22.872882][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 22.873087][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 22.873307][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 22.873574][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 22.873778][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 22.873978][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 22.874190][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 22.874396][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 22.874556][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 22.874775][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 22.874984][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 22.875208][ T227] ksys_write (fs/read_write.c:731) 
[ 22.875365][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 22.875573][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 22.875782][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.876027][  T227] RIP: 0033:0x7f565333eb77
[ 22.876249][ T227] Code: Unable to access opcode bytes at 0x7f565333eb4d.

Code starting with the faulting instruction
===========================================
[   22.876538][  T227] RSP: 002b:00007fff8f7eea98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   22.876851][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f565333eb77
[   22.877144][  T227] RDX: 0000000000000002 RSI: 000055c5d05ff330 RDI: 0000000000000001
[   22.877463][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[   22.877764][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000002
[   22.878069][  T227] R13: 00007f56533fa760 R14: 0000000000000002 R15: 00007f56533f59c0
| [   29.429785][  T227] ------------[ cut here ]------------
| [ 29.430125][ T227] WARNING: CPU: 1 PID: 227 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) 
| [   29.430553][  T227] Modules linked in: netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   29.431484][  T227] Tainted: [W]=WARN
[   29.431644][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 29.431902][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 29.432341][ T227] 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
[   29.433068][  T227] RSP: 0018:ffffc90000b07520 EFLAGS: 00010246
[   29.433433][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   29.433738][  T227] RDX: 0000000000000000 RSI: ffff88800b5eac98 RDI: ffff8880061c0b78
[   29.434052][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[   29.434363][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[   29.434795][  T227] R13: ffff88800b5ea128 R14: ffff88800b5ea008 R15: ffff88800b5ea000
[   29.435100][  T227] FS:  00007f56531fd740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   29.435494][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   29.435752][  T227] CR2: 00007f56533b1733 CR3: 000000000b8ea006 CR4: 0000000000772ef0
[   29.436053][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   29.436366][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   29.436680][  T227] PKRU: 55555554
[   29.436835][  T227] Call Trace:
[   29.437024][  T227]  <TASK>
[ 29.437140][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 29.437379][ T227] ? __warn (kernel/panic.c:748) 
[ 29.437550][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 29.437778][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 29.438012][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 29.438194][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 29.438431][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 29.438686][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 29.438922][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 29.439219][ T227] ? _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) 
[ 29.439453][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 29.439680][ T227] register_netdevice (net/core/dev.c:11003) 
[ 29.439910][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 29.440167][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 29.440411][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 29.440695][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 29.440868][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 29.441173][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 29.441459][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 29.441756][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 29.441993][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 29.442285][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 29.442497][ T227] ? 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)) 
[ 29.442653][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 29.442868][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 29.443080][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 29.443305][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 29.443514][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 29.443725][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 29.443975][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 29.444190][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 29.444393][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 29.444598][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 29.444816][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 29.445028][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 29.445242][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 29.445446][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 29.445654][ T227] ? 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) 
[ 29.445868][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 29.446076][ T227] device_add (drivers/base/core.c:3672) 
[ 29.446308][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 29.446515][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 29.446767][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 29.447038][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 29.447317][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 29.447522][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 29.447741][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 29.447961][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 29.448182][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 29.448347][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 29.448585][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 29.448795][ T227] ? 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) 
[ 29.449019][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 29.449242][ T227] ksys_write (fs/read_write.c:731) 
[ 29.449412][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 29.449622][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 29.449845][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 29.450052][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   29.450318][  T227] RIP: 0033:0x7f565333eb77
[ 29.450532][ T227] 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
[   29.451258][  T227] RSP: 002b:00007fff8f7eea98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   29.451576][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f565333eb77
[   29.451886][  T227] RDX: 0000000000000004 RSI: 000055c5d05ff330 RDI: 0000000000000001
[   29.452213][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[   29.452545][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000004
[   29.452853][  T227] R13: 00007f56533fa760 R14: 0000000000000004 R15: 00007f56533f59c0
| [   29.493582][  T227] ------------[ cut here ]------------
| [ 29.493922][ T227] WARNING: CPU: 0 PID: 227 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) 
| [   29.495581][  T227] Modules linked in: netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   29.496338][  T227] Tainted: [W]=WARN
[   29.496484][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 29.496719][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 29.496962][ T227] 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
[   29.497617][  T227] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[   29.497855][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   29.498136][  T227] RDX: 0000000000000000 RSI: ffff88800990ac98 RDI: ffff8880061c0b28
[   29.498426][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[   29.498763][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[   29.499041][  T227] R13: ffff88800990a128 R14: ffff88800990a008 R15: ffff88800990a000
[   29.499334][  T227] FS:  00007f56531fd740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   29.499762][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   29.500089][  T227] CR2: 00007fff8f7ebf40 CR3: 000000000b8ea004 CR4: 0000000000772ef0
[   29.500512][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   29.500958][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   29.501430][  T227] PKRU: 55555554
[   29.501666][  T227] Call Trace:
[   29.501930][  T227]  <TASK>
[ 29.502092][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 29.502428][ T227] ? __warn (kernel/panic.c:748) 
[ 29.502904][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 29.503235][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 29.503554][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 29.503795][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 29.504107][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 29.504459][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 29.504793][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 29.505200][ T227] ? _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) 
[ 29.505524][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 29.505868][ T227] register_netdevice (net/core/dev.c:11003) 
[ 29.506233][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 29.506587][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 29.506945][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 29.507369][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 29.507800][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 29.508213][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 29.508528][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 29.508852][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 29.509278][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 29.509605][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 29.509856][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 29.510090][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 29.510317][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 29.510480][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 29.510705][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 29.510899][ T227] ? 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) 
[ 29.511094][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 29.511303][ T227] ksys_write (fs/read_write.c:731) 
[ 29.511453][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 29.511635][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 29.511838][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 29.512028][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   29.512268][  T227] RIP: 0033:0x7f565333eb77
[ 29.512462][ T227] 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
[   29.513115][  T227] RSP: 002b:00007fff8f7ec4c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   29.513405][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f565333eb77
[   29.513683][  T227] RDX: 0000000000000002 RSI: 000055c5d05ff330 RDI: 0000000000000001
[   29.513976][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[   29.514280][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000002
[   29.514561][  T227] R13: 00007f56533fa760 R14: 0000000000000002 R15: 00007f56533f59c0
| [   44.269319][  T227] ------------[ cut here ]------------
| [ 44.269657][ T227] WARNING: CPU: 0 PID: 227 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) 
| [   44.270108][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   44.271048][  T227] Tainted: [W]=WARN
[   44.271214][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 44.271479][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 44.271777][ T227] 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
[   44.272701][  T227] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[   44.272987][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   44.273300][  T227] RDX: 0000000000000000 RSI: ffff8880025f2c98 RDI: ffff8880061c0b28
[   44.273611][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[   44.273921][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[   44.274237][  T227] R13: ffff8880025f2128 R14: ffff8880025f2008 R15: ffff8880025f2000
[   44.274556][  T227] FS:  00007f56531fd740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   44.274931][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   44.275199][  T227] CR2: 00007f5653343670 CR3: 000000000b8ea003 CR4: 0000000000772ef0
[   44.275507][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   44.275820][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   44.276127][  T227] PKRU: 55555554
[   44.276297][  T227] Call Trace:
[   44.276457][  T227]  <TASK>
[ 44.276569][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 44.276784][ T227] ? __warn (kernel/panic.c:748) 
[ 44.276948][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 44.277172][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 44.277392][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 44.277556][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 44.277767][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 44.277989][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 44.278215][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 44.278492][ T227] ? _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) 
[ 44.278704][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 44.278922][ T227] register_netdevice (net/core/dev.c:11003) 
[ 44.279141][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 44.279373][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 44.279631][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 44.279907][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 44.280205][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 44.280485][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 44.280706][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 44.280959][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 44.281254][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 44.281473][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 44.281691][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 44.281907][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 44.282133][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 44.282311][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 44.282533][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 44.282765][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 44.282992][ T227] ksys_write (fs/read_write.c:731) 
[ 44.283174][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 44.283407][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 44.283624][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   44.283916][  T227] RIP: 0033:0x7f565333eb77
[ 44.284162][ T227] 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
[   44.284975][  T227] RSP: 002b:00007fff8f7ec4c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   44.285280][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f565333eb77
[   44.285571][  T227] RDX: 0000000000000002 RSI: 000055c5d05ff330 RDI: 0000000000000001
[   44.285870][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[   44.286173][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000002
[   44.286471][  T227] R13: 00007f56533fa760 R14: 0000000000000002 R15: 00007f56533f59c0
| [   58.178684][  T227] ------------[ cut here ]------------
| [ 58.179118][ T227] WARNING: CPU: 0 PID: 227 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) 
| [   58.179621][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   58.180713][  T227] Tainted: [W]=WARN
[   58.180940][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 58.181327][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 58.181635][ T227] 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
[   58.182485][  T227] RSP: 0018:ffffc90000b07520 EFLAGS: 00010246
[   58.182873][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   58.183303][  T227] RDX: 0000000000000000 RSI: ffff88800d432c98 RDI: ffff8880061c0b78
[   58.183718][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[   58.184141][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[   58.184597][  T227] R13: ffff88800d432128 R14: ffff88800d432008 R15: ffff88800d432000
[   58.184995][  T227] FS:  00007f56531fd740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   58.185492][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   58.185840][  T227] CR2: 00007f5653343670 CR3: 000000000b8ea004 CR4: 0000000000772ef0
[   58.186269][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   58.186983][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   58.187392][  T227] PKRU: 55555554
[   58.187598][  T227] Call Trace:
[   58.187783][  T227]  <TASK>
[ 58.187938][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 58.188212][ T227] ? __warn (kernel/panic.c:748) 
[ 58.188489][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 58.188786][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 58.189084][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 58.189294][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 58.189534][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 58.189786][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 58.190040][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 58.190358][ T227] ? _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) 
[ 58.190602][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 58.190852][ T227] register_netdevice (net/core/dev.c:11003) 
[ 58.191106][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 58.191375][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 58.191722][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 58.192015][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 58.192203][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 58.192571][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 58.192913][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 58.193246][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 58.193540][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 58.193845][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 58.194087][ T227] ? 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)) 
[ 58.194353][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 58.194659][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 58.194934][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 58.195228][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 58.195481][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 58.195745][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 58.196177][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 58.196447][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 58.196685][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 58.196922][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 58.197176][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 58.197405][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 58.197660][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 58.197908][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 58.198162][ T227] ? 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) 
[ 58.198432][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 58.198692][ T227] device_add (drivers/base/core.c:3672) 
[ 58.198969][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 58.199265][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 58.199589][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 58.199906][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 58.200228][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 58.200536][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 58.200788][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 58.201022][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 58.201279][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 58.201477][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 58.201760][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 58.202042][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 58.202305][ T227] ksys_write (fs/read_write.c:731) 
[ 58.202508][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 58.202752][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 58.203007][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   58.203345][  T227] RIP: 0033:0x7f565333eb77
[ 58.203602][ T227] 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
[   58.204406][  T227] RSP: 002b:00007fff8f7eea98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   58.204739][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f565333eb77
[   58.205089][  T227] RDX: 0000000000000004 RSI: 000055c5d05ff330 RDI: 0000000000000001
[   58.205426][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[   58.205760][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000004
[   58.206084][  T227] R13: 00007f56533fa760 R14: 0000000000000004 R15: 00007f56533f59c0
| [   58.249503][  T227] ------------[ cut here ]------------
| [ 58.249822][ T227] WARNING: CPU: 0 PID: 227 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) 
| [   58.250397][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   58.251236][  T227] Tainted: [W]=WARN
[   58.251384][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 58.251623][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 58.251866][ T227] 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
[   58.252536][  T227] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[   58.252778][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   58.253062][  T227] RDX: 0000000000000000 RSI: ffff8880023e2c98 RDI: ffff8880061c0b28
[   58.253359][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[   58.253647][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[   58.253937][  T227] R13: ffff8880023e2128 R14: ffff8880023e2008 R15: ffff8880023e2000
[   58.254232][  T227] FS:  00007f56531fd740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   58.254573][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   58.254811][  T227] CR2: 00007fff8f7ebf40 CR3: 000000000b8ea004 CR4: 0000000000772ef0
[   58.255097][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   58.255397][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   58.255684][  T227] PKRU: 55555554
[   58.255846][  T227] Call Trace:
[   58.255993][  T227]  <TASK>
[ 58.256093][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 58.256297][ T227] ? __warn (kernel/panic.c:748) 
[ 58.256612][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 58.256968][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 58.257199][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 58.257349][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 58.257657][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 58.257867][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 58.258068][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 58.258353][ T227] ? _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) 
[ 58.258674][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 58.258869][ T227] register_netdevice (net/core/dev.c:11003) 
[ 58.259076][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 58.259295][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 58.259619][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 58.259917][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 58.260388][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 58.260751][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 58.261078][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 58.261357][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 58.261626][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 58.261823][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 58.262030][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 58.262243][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 58.262444][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 58.262849][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 58.263062][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 58.263269][ T227] ? 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) 
[ 58.263489][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 58.263831][ T227] ksys_write (fs/read_write.c:731) 
[ 58.264045][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 58.264255][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 58.264491][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 58.264692][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   58.264960][  T227] RIP: 0033:0x7f565333eb77
[ 58.265176][ T227] 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
[   58.265974][  T227] RSP: 002b:00007fff8f7ec4c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   58.266280][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f565333eb77
[   58.266576][  T227] RDX: 0000000000000002 RSI: 000055c5d05ff330 RDI: 0000000000000001
[   58.266856][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[   58.267270][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000002
[   58.267686][  T227] R13: 00007f56533fa760 R14: 0000000000000002 R15: 00007f56533f59c0
| [   73.127597][  T227] ------------[ cut here ]------------
| [ 73.127883][ T227] WARNING: CPU: 0 PID: 227 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) 
| [   73.128402][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   73.129448][  T227] Tainted: [W]=WARN
[   73.129640][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 73.129959][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 73.130301][ T227] 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
[   73.131144][  T227] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[   73.131441][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   73.131796][  T227] RDX: 0000000000000000 RSI: ffff88800255ac98 RDI: ffff8880061c0b28
[   73.132165][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[   73.132521][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[   73.132862][  T227] R13: ffff88800255a128 R14: ffff88800255a008 R15: ffff88800255a000
[   73.133559][  T227] FS:  00007f56531fd740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   73.133958][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   73.134275][  T227] CR2: 00007f5653343670 CR3: 000000000b8ea005 CR4: 0000000000772ef0
[   73.134622][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   73.134982][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   73.135373][  T227] PKRU: 55555554
[   73.135558][  T227] Call Trace:
[   73.135730][  T227]  <TASK>
[ 73.135844][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 73.136074][ T227] ? __warn (kernel/panic.c:748) 
[ 73.136269][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 73.136497][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 73.136726][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 73.136885][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 73.137073][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 73.137312][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 73.137533][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 73.137844][ T227] ? _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) 
[ 73.138059][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 73.138314][ T227] register_netdevice (net/core/dev.c:11003) 
[ 73.138513][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 73.138713][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 73.138942][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 73.139227][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 73.139575][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 73.139899][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 73.140107][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 73.140333][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 73.140595][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 73.140796][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 73.141005][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 73.141224][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 73.141524][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 73.141700][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 73.141933][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 73.142203][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 73.142462][ T227] ksys_write (fs/read_write.c:731) 
[ 73.142652][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 73.142905][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 73.143186][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   73.143521][  T227] RIP: 0033:0x7f565333eb77
[ 73.143810][ T227] 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
[   73.144725][  T227] RSP: 002b:00007fff8f7ec4c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   73.145096][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f565333eb77
[   73.145466][  T227] RDX: 0000000000000002 RSI: 000055c5d05ff330 RDI: 0000000000000001
[   73.145833][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[   73.146211][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000002
[   73.146584][  T227] R13: 00007f56533fa760 R14: 0000000000000002 R15: 00007f56533f59c0
| [   88.207796][  T227] ------------[ cut here ]------------
| [ 88.208256][ T227] WARNING: CPU: 3 PID: 227 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) 
| [   88.208810][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   88.209730][  T227] Tainted: [W]=WARN
[   88.209895][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 88.210195][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 88.210509][ T227] 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
[   88.211245][  T227] RSP: 0018:ffffc90000b07520 EFLAGS: 00010246
[   88.211516][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   88.211843][  T227] RDX: 0000000000000000 RSI: ffff88800d42ac98 RDI: ffff8880061c0b78
[   88.212171][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[   88.212489][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[   88.212864][  T227] R13: ffff88800d42a128 R14: ffff88800d42a008 R15: ffff88800d42a000
[   88.213239][  T227] FS:  00007f56531fd740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   88.213640][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   88.213910][  T227] CR2: 00007fdee7c4e000 CR3: 000000000b8ea004 CR4: 0000000000772ef0
[   88.214632][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   88.214954][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   88.215275][  T227] PKRU: 55555554
[   88.215454][  T227] Call Trace:
[   88.215622][  T227]  <TASK>
[ 88.215737][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 88.215951][ T227] ? __warn (kernel/panic.c:748) 
[ 88.216114][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 88.216339][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 88.216568][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 88.216730][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 88.216968][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 88.217202][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 88.217439][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 88.217750][ T227] ? _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) 
[ 88.217973][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 88.218242][ T227] register_netdevice (net/core/dev.c:11003) 
[ 88.218563][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 88.218940][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 88.219338][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 88.219823][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 88.220091][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 88.220599][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 88.221067][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 88.221591][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 88.221989][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 88.222448][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 88.222804][ T227] ? 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)) 
[ 88.223107][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 88.223531][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 88.223903][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 88.224255][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 88.224620][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 88.224856][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 88.225112][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 88.225347][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 88.225560][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 88.225768][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 88.225985][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 88.226221][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 88.226446][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 88.226725][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 88.226936][ T227] ? 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) 
[ 88.227168][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 88.227413][ T227] device_add (drivers/base/core.c:3672) 
[ 88.227631][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 88.227835][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 88.228059][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 88.228376][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 88.228649][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 88.228863][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 88.229076][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 88.229310][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 88.229525][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 88.229724][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 88.229958][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 88.230189][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 88.230506][ T227] ksys_write (fs/read_write.c:731) 
[ 88.230778][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 88.231169][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 88.231539][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   88.231822][  T227] RIP: 0033:0x7f565333eb77
[ 88.232045][ T227] 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
[   88.232790][  T227] RSP: 002b:00007fff8f7eea98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   88.233109][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f565333eb77
[   88.233441][  T227] RDX: 0000000000000004 RSI: 000055c5d05ff330 RDI: 0000000000000001
[   88.233754][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[   88.234070][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000004
[   88.234400][  T227] R13: 00007f56533fa760 R14: 0000000000000004 R15: 00007f56533f59c0
| [   88.305085][  T227] ------------[ cut here ]------------
| [ 88.305547][ T227] WARNING: CPU: 1 PID: 227 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) 
| [   88.305959][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   88.306766][  T227] Tainted: [W]=WARN
[   88.306937][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 88.307195][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 88.307470][ T227] 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
[   88.308125][  T227] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[   88.308403][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   88.308690][  T227] RDX: 0000000000000000 RSI: ffff88800babac98 RDI: ffff8880061c0b28
[   88.308973][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[   88.309257][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[   88.309535][  T227] R13: ffff88800baba128 R14: ffff88800baba008 R15: ffff88800baba000
[   88.309821][  T227] FS:  00007f56531fd740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   88.310166][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   88.310398][  T227] CR2: 00007fb5c4687a00 CR3: 000000000b8ea004 CR4: 0000000000772ef0
[   88.310678][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   88.311271][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   88.311556][  T227] PKRU: 55555554
[   88.311698][  T227] Call Trace:
[   88.311849][  T227]  <TASK>
[ 88.311948][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 88.312140][ T227] ? __warn (kernel/panic.c:748) 
[ 88.312302][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 88.312489][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 88.312684][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 88.312841][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 88.313028][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 88.313240][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 88.313437][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 88.313675][ T227] ? _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) 
[ 88.313902][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 88.314146][ T227] register_netdevice (net/core/dev.c:11003) 
[ 88.314388][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 88.314610][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 88.314843][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 88.315255][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 88.315671][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 88.316069][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 88.316401][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 88.316733][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 88.317124][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 88.317456][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 88.317769][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 88.318085][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 88.318424][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 88.318688][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 88.319000][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 88.319349][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 88.319675][ T227] ksys_write (fs/read_write.c:731) 
[ 88.319912][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 88.320263][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 88.320568][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   88.320950][  T227] RIP: 0033:0x7f565333eb77
[ 88.321277][ T227] 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
[   88.322327][  T227] RSP: 002b:00007fff8f7eddb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   88.322789][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f565333eb77
[   88.323266][  T227] RDX: 0000000000000002 RSI: 000055c5d05ff330 RDI: 0000000000000001
[   88.323707][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[   88.324143][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000002
[   88.324612][  T227] R13: 00007f56533fa760 R14: 0000000000000002 R15: 00007f56533f59c0
| [   96.969422][  T227] ------------[ cut here ]------------
| [ 96.969686][ T227] WARNING: CPU: 1 PID: 227 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) 
| [   96.970096][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   96.970931][  T227] Tainted: [W]=WARN
[   96.971089][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 96.971342][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 96.971593][ T227] 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
[   96.972752][  T227] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[   96.973019][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   96.973355][  T227] RDX: 0000000000000000 RSI: ffff88800b5eac98 RDI: ffff8880061c0b28
[   96.973664][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[   96.973991][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[   96.974287][  T227] R13: ffff88800b5ea128 R14: ffff88800b5ea008 R15: ffff88800b5ea000
[   96.974592][  T227] FS:  00007f56531fd740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   96.974927][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   96.975186][  T227] CR2: 00007f5653343670 CR3: 000000000b8ea005 CR4: 0000000000772ef0
[   96.975490][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   96.975841][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   96.976134][  T227] PKRU: 55555554
[   96.976294][  T227] Call Trace:
[   96.976444][  T227]  <TASK>
[ 96.976547][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 96.976749][ T227] ? __warn (kernel/panic.c:748) 
[ 96.976903][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 96.977101][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 96.977315][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 96.977501][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 96.977699][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 96.977918][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 96.978135][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 96.978400][ T227] ? _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) 
[ 96.978608][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 96.978816][ T227] register_netdevice (net/core/dev.c:11003) 
[ 96.979017][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 96.979232][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 96.979449][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 96.979703][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 96.979986][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 96.980253][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 96.980458][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 96.980666][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 96.980924][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 96.981120][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 96.981324][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 96.981530][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 96.981739][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 96.981900][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 96.982107][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 96.982326][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 96.982568][ T227] ksys_write (fs/read_write.c:731) 
[ 96.982744][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 96.982954][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 96.983144][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   96.983396][  T227] RIP: 0033:0x7f565333eb77
[ 96.983588][ T227] 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
[   96.984255][  T227] RSP: 002b:00007fff8f7eddb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   96.984543][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f565333eb77
[   96.984821][  T227] RDX: 0000000000000002 RSI: 000055c5d05ff330 RDI: 0000000000000001
[   96.985097][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[   96.985397][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000002
[   96.985680][  T227] R13: 00007f56533fa760 R14: 0000000000000002 R15: 00007f56533f59c0
| [  105.308127][  T227] ------------[ cut here ]------------
| [ 105.308543][ T227] WARNING: CPU: 1 PID: 227 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) 
| [  105.308987][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  105.309864][  T227] Tainted: [W]=WARN
[  105.310027][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 105.310313][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 105.310595][ T227] 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
[  105.311533][  T227] RSP: 0018:ffffc90000b07520 EFLAGS: 00010246
[  105.311800][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  105.312119][  T227] RDX: 0000000000000000 RSI: ffff88800990ac98 RDI: ffff8880061c0b78
[  105.312438][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[  105.312759][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[  105.313072][  T227] R13: ffff88800990a128 R14: ffff88800990a008 R15: ffff88800990a000
[  105.313394][  T227] FS:  00007f56531fd740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  105.313767][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  105.314030][  T227] CR2: 00007fb5c44975a0 CR3: 000000000b8ea005 CR4: 0000000000772ef0
[  105.314364][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  105.314692][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  105.314997][  T227] PKRU: 55555554
[  105.315167][  T227] Call Trace:
[  105.315325][  T227]  <TASK>
[ 105.315433][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 105.315653][ T227] ? __warn (kernel/panic.c:748) 
[ 105.315819][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 105.316040][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 105.316286][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 105.316449][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 105.316664][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 105.316891][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 105.317126][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 105.317405][ T227] ? _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) 
[ 105.317653][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 105.317876][ T227] register_netdevice (net/core/dev.c:11003) 
[ 105.318126][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 105.318382][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 105.318621][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 105.318899][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 105.319087][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 105.319374][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 105.319655][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 105.319931][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 105.320162][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 105.320431][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 105.320660][ T227] ? 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)) 
[ 105.320834][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 105.321051][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 105.321292][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 105.321504][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 105.321738][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 105.321957][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 105.322259][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 105.322477][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 105.322782][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 105.322999][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 105.323223][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 105.323447][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 105.323657][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 105.323863][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 105.324072][ T227] ? 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) 
[ 105.324312][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 105.324526][ T227] device_add (drivers/base/core.c:3672) 
[ 105.324743][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 105.324989][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 105.325234][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 105.325518][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 105.325798][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 105.326032][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 105.326270][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 105.326493][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 105.326707][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 105.326874][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 105.327085][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 105.327317][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 105.327559][ T227] ksys_write (fs/read_write.c:731) 
[ 105.327729][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 105.327959][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 105.328200][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  105.328469][  T227] RIP: 0033:0x7f565333eb77
[ 105.328698][ T227] 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
[  105.329446][  T227] RSP: 002b:00007fff8f7eea98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  105.329760][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f565333eb77
[  105.330064][  T227] RDX: 0000000000000004 RSI: 000055c5d05ff330 RDI: 0000000000000001
[  105.330405][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[  105.330745][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000004
[  105.331054][  T227] R13: 00007f56533fa760 R14: 0000000000000004 R15: 00007f56533f59c0
| [  105.397319][  T227] ------------[ cut here ]------------
| [ 105.397821][ T227] WARNING: CPU: 3 PID: 227 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) 
| [  105.398475][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  105.399812][  T227] Tainted: [W]=WARN
[  105.400050][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 105.400454][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 105.400854][ T227] 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
[  105.401946][  T227] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[  105.402359][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  105.402824][  T227] RDX: 0000000000000000 RSI: ffff8880025f2c98 RDI: ffff8880061c0b28
[  105.403304][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[  105.403778][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[  105.404305][  T227] R13: ffff8880025f2128 R14: ffff8880025f2008 R15: ffff8880025f2000
[  105.404765][  T227] FS:  00007f56531fd740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  105.405299][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  105.405691][  T227] CR2: 00007fff8f7ebfe8 CR3: 000000000b8ea003 CR4: 0000000000772ef0
[  105.406136][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  105.406596][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  105.407431][  T227] PKRU: 55555554
[  105.407649][  T227] Call Trace:
[  105.407857][  T227]  <TASK>
[ 105.408004][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 105.408321][ T227] ? __warn (kernel/panic.c:748) 
[ 105.408476][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 105.408677][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 105.408877][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 105.409022][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 105.409227][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 105.409453][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 105.409673][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 105.409910][ T227] ? _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) 
[ 105.410109][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 105.410314][ T227] register_netdevice (net/core/dev.c:11003) 
[ 105.410523][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 105.410726][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 105.410944][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 105.411201][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 105.411466][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 105.411730][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 105.411924][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 105.412124][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 105.412391][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 105.412581][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 105.412773][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 105.412982][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 105.413191][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 105.413345][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 105.413547][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 105.413746][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 105.413956][ T227] ksys_write (fs/read_write.c:731) 
[ 105.414106][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 105.414324][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 105.414523][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  105.414759][  T227] RIP: 0033:0x7f565333eb77
[ 105.414957][ T227] Code: Unable to access opcode bytes at 0x7f565333eb4d.

Code starting with the faulting instruction
===========================================
[  105.415224][  T227] RSP: 002b:00007fff8f7ec138 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  105.415522][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f565333eb77
[  105.415819][  T227] RDX: 0000000000000002 RSI: 000055c5d05ff330 RDI: 0000000000000001
[  105.416113][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[  105.416427][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000002
[  105.416737][  T227] R13: 00007f56533fa760 R14: 0000000000000002 R15: 00007f56533f59c0
| [  108.620301][  T227] ------------[ cut here ]------------
| [ 108.620650][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  108.621345][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  108.622932][  T227] Tainted: [W]=WARN
[  108.623248][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 108.623677][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 108.624121][ T227] 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
[  108.625247][  T227] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[  108.625693][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  108.626246][  T227] RDX: 0000000000000000 RSI: ffff88800d432c98 RDI: ffff8880061c0b28
[  108.626768][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[  108.627370][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[  108.627903][  T227] R13: ffff88800d432128 R14: ffff88800d432008 R15: ffff88800d432000
[  108.628456][  T227] FS:  00007f56531fd740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  108.629103][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  108.629579][  T227] CR2: 000055c5d05de1e8 CR3: 000000000b8ea004 CR4: 0000000000772ef0
[  108.630074][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  108.630612][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  108.631176][  T227] PKRU: 55555554
[  108.631465][  T227] Call Trace:
[  108.631751][  T227]  <TASK>
[ 108.631958][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 108.632347][ T227] ? __warn (kernel/panic.c:748) 
[ 108.632638][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 108.632999][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 108.633398][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 108.633683][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 108.634095][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 108.634534][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 108.634923][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 108.635472][ T227] ? _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) 
[ 108.635874][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 108.636291][ T227] register_netdevice (net/core/dev.c:11003) 
[ 108.636667][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 108.637059][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 108.637467][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 108.637981][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 108.638503][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 108.638963][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 108.639217][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 108.639515][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 108.639861][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 108.640088][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 108.640398][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 108.640656][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 108.641005][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 108.641304][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 108.641693][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 108.642089][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 108.642510][ T227] ksys_write (fs/read_write.c:731) 
[ 108.642813][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 108.643231][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 108.643544][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  108.643925][  T227] RIP: 0033:0x7f565333eb77
[ 108.644297][ T227] 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
[  108.645479][  T227] RSP: 002b:00007fff8f7ec138 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  108.646021][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f565333eb77
[  108.646593][  T227] RDX: 0000000000000002 RSI: 000055c5d05ff330 RDI: 0000000000000001
[  108.647120][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[  108.647668][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000002
[  108.648227][  T227] R13: 00007f56533fa760 R14: 0000000000000002 R15: 00007f56533f59c0
| [  111.475932][  T227] ------------[ cut here ]------------
| [ 111.476416][ T227] WARNING: CPU: 0 PID: 227 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) 
| [  111.476876][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  111.477798][  T227] Tainted: [W]=WARN
[  111.477970][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 111.478279][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.478575][ T227] 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
[  111.479372][  T227] RSP: 0018:ffffc90000b07520 EFLAGS: 00010246
[  111.479659][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  111.479991][  T227] RDX: 0000000000000000 RSI: ffff8880023e2c98 RDI: ffff8880061c0b78
[  111.480336][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[  111.480680][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[  111.481053][  T227] R13: ffff8880023e2128 R14: ffff8880023e2008 R15: ffff8880023e2000
[  111.481401][  T227] FS:  00007f56531fd740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  111.481791][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  111.482083][  T227] CR2: 00007fb5c47766f0 CR3: 000000000b8ea006 CR4: 0000000000772ef0
[  111.482639][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  111.482987][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  111.483327][  T227] PKRU: 55555554
[  111.483505][  T227] Call Trace:
[  111.483679][  T227]  <TASK>
[ 111.483797][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.484027][ T227] ? __warn (kernel/panic.c:748) 
[ 111.484216][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.484446][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 111.484679][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 111.484852][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 111.485085][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 111.485341][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.485575][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 111.485856][ T227] ? _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) 
[ 111.486087][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 111.486327][ T227] register_netdevice (net/core/dev.c:11003) 
[ 111.486565][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 111.486806][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 111.487051][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 111.487346][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 111.487518][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 111.487812][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 111.488116][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 111.488414][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 111.488655][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 111.488952][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 111.489197][ T227] ? 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)) 
[ 111.489370][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 111.489604][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 111.489841][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 111.490069][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 111.490316][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 111.490531][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 111.490789][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 111.491003][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 111.491213][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 111.491423][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 111.491628][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 111.491883][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 111.492088][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 111.492299][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 111.492508][ T227] ? 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) 
[ 111.492724][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 111.492933][ T227] device_add (drivers/base/core.c:3672) 
[ 111.493167][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 111.493391][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 111.493629][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 111.493917][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 111.494220][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 111.494444][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 111.494678][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 111.494900][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 111.495136][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 111.495324][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 111.495555][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 111.495788][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 111.496020][ T227] ksys_write (fs/read_write.c:731) 
[ 111.496201][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 111.496438][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 111.496697][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  111.496975][  T227] RIP: 0033:0x7f565333eb77
[ 111.497236][ T227] 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
[  111.498050][  T227] RSP: 002b:00007fff8f7eea98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  111.498406][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f565333eb77
[  111.498735][  T227] RDX: 0000000000000004 RSI: 000055c5d05ff330 RDI: 0000000000000001
[  111.499070][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[  111.499410][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000004
[  111.499743][  T227] R13: 00007f56533fa760 R14: 0000000000000004 R15: 00007f56533f59c0
| [  111.541270][  T227] ------------[ cut here ]------------
| [ 111.541640][ T227] WARNING: CPU: 0 PID: 227 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) 
| [  111.542069][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  111.543102][  T227] Tainted: [W]=WARN
[  111.543290][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 111.543551][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.543818][ T227] 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
[  111.544581][  T227] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[  111.544863][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  111.545274][  T227] RDX: 0000000000000000 RSI: ffff88800255ac98 RDI: ffff8880061c0b28
[  111.545666][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[  111.545979][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[  111.546369][  T227] R13: ffff88800255a128 R14: ffff88800255a008 R15: ffff88800255a000
[  111.546676][  T227] FS:  00007f56531fd740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  111.547044][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  111.547386][  T227] CR2: 00007fb5c47766f0 CR3: 000000000b8ea006 CR4: 0000000000772ef0
[  111.547687][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  111.547994][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  111.548437][  T227] PKRU: 55555554
[  111.548595][  T227] Call Trace:
[  111.548751][  T227]  <TASK>
[ 111.548915][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.549278][ T227] ? __warn (kernel/panic.c:748) 
[ 111.549445][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.549652][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 111.549848][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 111.550004][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 111.550292][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 111.550513][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 111.550731][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 111.550984][ T227] ? _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) 
[ 111.551289][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 111.551605][ T227] register_netdevice (net/core/dev.c:11003) 
[ 111.551814][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 111.552010][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 111.552295][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 111.552582][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 111.552841][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 111.553093][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 111.553319][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 111.553525][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 111.553795][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 111.553983][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 111.554187][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 111.554409][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 111.554631][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 111.554804][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 111.555015][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 111.555258][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 111.555479][ T227] ksys_write (fs/read_write.c:731) 
[ 111.555630][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 111.555860][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 111.556081][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  111.556381][  T227] RIP: 0033:0x7f565333eb77
[ 111.556596][ T227] 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
[  111.557357][  T227] RSP: 002b:00007fff8f7ec5f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  111.557679][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f565333eb77
[  111.557988][  T227] RDX: 0000000000000002 RSI: 000055c5d05ff330 RDI: 0000000000000001
[  111.558333][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[  111.558648][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000002
[  111.558965][  T227] R13: 00007f56533fa760 R14: 0000000000000002 R15: 00007f56533f59c0
| [  114.326016][  T227] ------------[ cut here ]------------
| [ 114.326345][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  114.326869][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  114.328062][  T227] Tainted: [W]=WARN
[  114.328235][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 114.328490][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 114.328761][ T227] 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
[  114.329581][  T227] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[  114.329846][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  114.330140][  T227] RDX: 0000000000000000 RSI: ffff88800d42ac98 RDI: ffff8880061c0b28
[  114.330453][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[  114.330812][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[  114.331178][  T227] R13: ffff88800d42a128 R14: ffff88800d42a008 R15: ffff88800d42a000
[  114.331490][  T227] FS:  00007f56531fd740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  114.331931][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  114.332197][  T227] CR2: 00005560cca36170 CR3: 000000000b8ea006 CR4: 0000000000772ef0
[  114.332519][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  114.332962][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  114.333307][  T227] PKRU: 55555554
[  114.333545][  T227] Call Trace:
[  114.333714][  T227]  <TASK>
[ 114.333835][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 114.334053][ T227] ? __warn (kernel/panic.c:748) 
[ 114.334309][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 114.334600][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 114.334842][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 114.335068][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 114.335363][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 114.335616][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 114.335907][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 114.336221][ T227] ? _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) 
[ 114.336461][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 114.336767][ T227] register_netdevice (net/core/dev.c:11003) 
[ 114.336998][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 114.337311][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 114.337600][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 114.337939][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 114.338341][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 114.338687][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 114.338978][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 114.339282][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 114.339614][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 114.339906][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 114.340163][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 114.340473][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 114.340724][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 114.340918][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 114.341232][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 114.341522][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 114.341850][ T227] ksys_write (fs/read_write.c:731) 
[ 114.342038][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 114.342370][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 114.342612][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  114.342955][  T227] RIP: 0033:0x7f565333eb77
[ 114.343252][ T227] 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
[  114.344167][  T227] RSP: 002b:00007fff8f7ec5f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  114.344582][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f565333eb77
[  114.344897][  T227] RDX: 0000000000000002 RSI: 000055c5d05ff330 RDI: 0000000000000001
[  114.345281][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[  114.345634][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000002
[  114.346016][  T227] R13: 00007f56533fa760 R14: 0000000000000002 R15: 00007f56533f59c0
| [  116.981778][  T227] ------------[ cut here ]------------
| [ 116.982331][ T227] WARNING: CPU: 0 PID: 227 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) 
| [  116.983022][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  116.984580][  T227] Tainted: [W]=WARN
[  116.984891][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 116.985374][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 116.985843][ T227] 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
[  116.986676][  T227] RSP: 0018:ffffc90000b07520 EFLAGS: 00010246
[  116.986990][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  116.987331][  T227] RDX: 0000000000000000 RSI: ffff88800babac98 RDI: ffff8880061c0b78
[  116.987766][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[  116.988206][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[  116.988686][  T227] R13: ffff88800baba128 R14: ffff88800baba008 R15: ffff88800baba000
[  116.989066][  T227] FS:  00007f56531fd740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  116.989497][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  116.989799][  T227] CR2: 000055c5d05f6658 CR3: 000000000b8ea003 CR4: 0000000000772ef0
[  116.990141][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  116.990480][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  116.991073][  T227] PKRU: 55555554
[  116.991257][  T227] Call Trace:
[  116.991428][  T227]  <TASK>
[ 116.991545][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 116.991777][ T227] ? __warn (kernel/panic.c:748) 
[ 116.991954][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 116.992226][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 116.992533][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 116.992709][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 116.992937][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 116.993186][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 116.993419][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 116.993698][ T227] ? _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) 
[ 116.993934][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 116.994182][ T227] register_netdevice (net/core/dev.c:11003) 
[ 116.994420][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 116.994655][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 116.994936][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 116.995231][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 116.995404][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 116.995692][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 116.995993][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 116.996319][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 116.996564][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 116.996860][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 116.997086][ T227] ? 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)) 
[ 116.997340][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 116.997672][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 116.998056][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 116.998308][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 116.998535][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 116.998760][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 116.999043][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 116.999277][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 116.999497][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 116.999729][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 116.999956][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 117.000213][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 117.000439][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 117.000657][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 117.000890][ T227] ? 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) 
[ 117.001119][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 117.001367][ T227] device_add (drivers/base/core.c:3672) 
[ 117.001595][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 117.001824][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 117.002061][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 117.002366][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 117.002657][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 117.002888][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 117.003125][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 117.003358][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 117.003592][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 117.003771][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 117.004005][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 117.004272][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 117.004609][ T227] ksys_write (fs/read_write.c:731) 
[ 117.004800][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 117.005047][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 117.005302][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  117.005583][  T227] RIP: 0033:0x7f565333eb77
[ 117.005815][ T227] 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
[  117.006595][  T227] RSP: 002b:00007fff8f7eea98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  117.006935][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f565333eb77
[  117.007269][  T227] RDX: 0000000000000004 RSI: 000055c5d05ff330 RDI: 0000000000000001
[  117.007596][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[  117.007936][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000004
[  117.008302][  T227] R13: 00007f56533fa760 R14: 0000000000000004 R15: 00007f56533f59c0
| [  117.058095][  T227] ------------[ cut here ]------------
| [ 117.058560][ T227] WARNING: CPU: 0 PID: 227 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) 
| [  117.059187][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  117.060107][  T227] Tainted: [W]=WARN
[  117.060274][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 117.060541][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 117.060816][ T227] 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
[  117.061596][  T227] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[  117.061864][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  117.062186][  T227] RDX: 0000000000000000 RSI: ffff88800b5eac98 RDI: ffff8880061c0b28
[  117.062491][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[  117.062810][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[  117.063123][  T227] R13: ffff88800b5ea128 R14: ffff88800b5ea008 R15: ffff88800b5ea000
[  117.063438][  T227] FS:  00007f56531fd740(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[  117.063810][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  117.064069][  T227] CR2: 00007fff8f7ebfe8 CR3: 000000000b8ea003 CR4: 0000000000772ef0
[  117.064389][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  117.064691][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  117.065258][  T227] PKRU: 55555554
[  117.065415][  T227] Call Trace:
[  117.065582][  T227]  <TASK>
[ 117.065693][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 117.065942][ T227] ? __warn (kernel/panic.c:748) 
[ 117.066107][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 117.066325][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 117.066576][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 117.066737][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 117.066966][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 117.067196][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 117.067415][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 117.067689][ T227] ? _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) 
[ 117.067925][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 117.068177][ T227] register_netdevice (net/core/dev.c:11003) 
[ 117.068390][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 117.068607][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 117.068837][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 117.069100][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 117.069405][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 117.069678][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 117.069892][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 117.070101][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 117.070373][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 117.070728][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 117.070932][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 117.071133][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 117.071348][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 117.071633][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 117.071864][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 117.072083][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 117.072403][ T227] ksys_write (fs/read_write.c:731) 
[ 117.072609][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 117.073030][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 117.073342][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  117.073694][  T227] RIP: 0033:0x7f565333eb77
[ 117.073931][ T227] 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
[  117.074659][  T227] RSP: 002b:00007fff8f7ec138 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  117.074974][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f565333eb77
[  117.075285][  T227] RDX: 0000000000000002 RSI: 000055c5d05ff330 RDI: 0000000000000001
[  117.075597][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[  117.076026][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000002
[  117.076340][  T227] R13: 00007f56533fa760 R14: 0000000000000002 R15: 00007f56533f59c0
| [  119.778738][  T227] ------------[ cut here ]------------
| [ 119.779028][ T227] WARNING: CPU: 1 PID: 227 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) 
| [  119.779541][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  119.780821][  T227] Tainted: [W]=WARN
[  119.781007][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 119.781332][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 119.781639][ T227] 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
[  119.782327][  T227] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[  119.782601][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  119.782913][  T227] RDX: 0000000000000000 RSI: ffff88800990ac98 RDI: ffff8880061c0b28
[  119.783256][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[  119.783592][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[  119.783918][  T227] R13: ffff88800990a128 R14: ffff88800990a008 R15: ffff88800990a000
[  119.784260][  T227] FS:  00007f56531fd740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[  119.784667][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  119.784955][  T227] CR2: 000055c5d05de1e8 CR3: 000000000b8ea002 CR4: 0000000000772ef0
[  119.785302][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  119.785640][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  119.786028][  T227] PKRU: 55555554
[  119.786219][  T227] Call Trace:
[  119.786393][  T227]  <TASK>
[ 119.786515][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 119.786735][ T227] ? __warn (kernel/panic.c:748) 
[ 119.786894][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 119.787101][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 119.787325][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 119.787533][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 119.787829][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 119.788200][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 119.788468][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 119.788820][ T227] ? _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) 
[ 119.789206][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 119.789562][ T227] register_netdevice (net/core/dev.c:11003) 
[ 119.789799][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 119.790030][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 119.790292][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 119.790562][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 119.790879][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 119.791142][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 119.791367][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 119.791596][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 119.791872][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 119.792087][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 119.792348][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 119.792588][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 119.792820][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 119.792991][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 119.793239][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 119.793547][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 119.793780][ T227] ksys_write (fs/read_write.c:731) 
[ 119.793953][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 119.794197][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 119.794445][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  119.794697][  T227] RIP: 0033:0x7f565333eb77
[ 119.794890][ T227] 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
[  119.795577][  T227] RSP: 002b:00007fff8f7ec138 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  119.795864][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f565333eb77
[  119.796178][  T227] RDX: 0000000000000002 RSI: 000055c5d05ff330 RDI: 0000000000000001
[  119.796523][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[  119.796906][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000002
[  119.797219][  T227] R13: 00007f56533fa760 R14: 0000000000000002 R15: 00007f56533f59c0
| [  122.168253][  T227] ------------[ cut here ]------------
| [ 122.168839][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  122.169583][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  122.171218][  T227] Tainted: [W]=WARN
[  122.171530][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 122.171999][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 122.172506][ T227] 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
[  122.173511][  T227] RSP: 0018:ffffc90000b07520 EFLAGS: 00010246
[  122.173884][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  122.174273][  T227] RDX: 0000000000000000 RSI: ffff8880025f2c98 RDI: ffff8880061c0b78
[  122.174635][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[  122.175030][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[  122.175496][  T227] R13: ffff8880025f2128 R14: ffff8880025f2008 R15: ffff8880025f2000
[  122.175881][  T227] FS:  00007f56531fd740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  122.176365][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  122.176998][  T227] CR2: 000055c5d05d6000 CR3: 000000000b8ea003 CR4: 0000000000772ef0
[  122.177453][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  122.177828][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  122.178235][  T227] PKRU: 55555554
[  122.178484][  T227] Call Trace:
[  122.178669][  T227]  <TASK>
[ 122.178798][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 122.179051][ T227] ? __warn (kernel/panic.c:748) 
[ 122.179253][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 122.179533][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 122.179873][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 122.180078][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 122.180361][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 122.180703][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 122.181042][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 122.181422][ T227] ? _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) 
[ 122.181724][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 122.182005][ T227] register_netdevice (net/core/dev.c:11003) 
[ 122.182267][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 122.182518][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 122.182843][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 122.183352][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 122.183581][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 122.183924][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 122.184244][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 122.184540][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 122.184789][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 122.185112][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 122.185422][ T227] ? 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)) 
[ 122.185612][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 122.185862][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 122.186132][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 122.186389][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 122.186633][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 122.186872][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 122.187187][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 122.187430][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 122.187732][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 122.188049][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 122.188300][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 122.188540][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 122.188775][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 122.189022][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 122.189301][ T227] ? 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) 
[ 122.189581][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 122.189837][ T227] device_add (drivers/base/core.c:3672) 
[ 122.190137][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 122.190430][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 122.190686][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 122.191067][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 122.191432][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 122.191679][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 122.191956][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 122.192202][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 122.192463][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 122.192742][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 122.193058][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 122.193416][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 122.193722][ T227] ksys_write (fs/read_write.c:731) 
[ 122.193978][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 122.194284][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 122.194545][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  122.194932][  T227] RIP: 0033:0x7f565333eb77
[ 122.195256][ T227] 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
[  122.196184][  T227] RSP: 002b:00007fff8f7eea98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  122.196597][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f565333eb77
[  122.196949][  T227] RDX: 0000000000000004 RSI: 000055c5d05ff330 RDI: 0000000000000001
[  122.197302][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[  122.197766][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000004
[  122.198204][  T227] R13: 00007f56533fa760 R14: 0000000000000004 R15: 00007f56533f59c0
| [  122.250677][  T227] ------------[ cut here ]------------
| [ 122.251226][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  122.251851][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  122.253265][  T227] Tainted: [W]=WARN
[  122.253533][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 122.254015][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 122.254438][ T227] 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
[  122.255584][  T227] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[  122.256008][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  122.256446][  T227] RDX: 0000000000000000 RSI: ffff88800d432c98 RDI: ffff8880061c0b28
[  122.256909][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[  122.257424][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[  122.258234][  T227] R13: ffff88800d432128 R14: ffff88800d432008 R15: ffff88800d432000
[  122.258720][  T227] FS:  00007f56531fd740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  122.259135][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  122.259417][  T227] CR2: 000055c5d05d6000 CR3: 000000000b8ea003 CR4: 0000000000772ef0
[  122.259876][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  122.260409][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  122.260871][  T227] PKRU: 55555554
[  122.261127][  T227] Call Trace:
[  122.261467][  T227]  <TASK>
[ 122.261660][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 122.261964][ T227] ? __warn (kernel/panic.c:748) 
[ 122.262294][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 122.262664][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 122.263038][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 122.263328][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 122.263623][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 122.263987][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 122.264295][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 122.264726][ T227] ? _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) 
[ 122.265046][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 122.265403][ T227] register_netdevice (net/core/dev.c:11003) 
[ 122.265753][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 122.266131][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 122.266524][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 122.266945][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 122.267412][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 122.267835][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 122.268245][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 122.268592][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 122.269016][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 122.269272][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 122.269495][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 122.269769][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 122.270128][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 122.270449][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 122.270804][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 122.271184][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 122.271802][ T227] ksys_write (fs/read_write.c:731) 
[ 122.272310][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 122.272660][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 122.272989][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  122.273405][  T227] RIP: 0033:0x7f565333eb77
[ 122.273765][ T227] Code: Unable to access opcode bytes at 0x7f565333eb4d.

Code starting with the faulting instruction
===========================================
[  122.274217][  T227] RSP: 002b:00007fff8f7ec398 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  122.274761][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f565333eb77
[  122.275254][  T227] RDX: 0000000000000002 RSI: 000055c5d05ff330 RDI: 0000000000000001
[  122.275730][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[  122.276479][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000002
[  122.277044][  T227] R13: 00007f56533fa760 R14: 0000000000000002 R15: 00007f56533f59c0
| [  124.916676][  T227] ------------[ cut here ]------------
| [ 124.917032][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  124.917483][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  124.918384][  T227] Tainted: [W]=WARN
[  124.918565][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 124.918831][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 124.919098][ T227] 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
[  124.920093][  T227] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[  124.920384][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  124.920718][  T227] RDX: 0000000000000000 RSI: ffff8880023e2c98 RDI: ffff8880061c0b28
[  124.921030][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[  124.921351][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[  124.921720][  T227] R13: ffff8880023e2128 R14: ffff8880023e2008 R15: ffff8880023e2000
[  124.922028][  T227] FS:  00007f56531fd740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  124.922406][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  124.922680][  T227] CR2: 00007f6deb924000 CR3: 000000000b8ea005 CR4: 0000000000772ef0
[  124.922989][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  124.923310][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  124.923642][  T227] PKRU: 55555554
[  124.923856][  T227] Call Trace:
[  124.924023][  T227]  <TASK>
[ 124.924141][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 124.924383][ T227] ? __warn (kernel/panic.c:748) 
[ 124.924605][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 124.924825][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 124.925047][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 124.925234][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 124.925446][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 124.925682][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 124.925914][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 124.926198][ T227] ? _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) 
[ 124.926418][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 124.926636][ T227] register_netdevice (net/core/dev.c:11003) 
[ 124.926854][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 124.927074][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 124.927323][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 124.927609][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 124.927951][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 124.928257][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 124.928470][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 124.928703][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 124.928980][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 124.929209][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 124.929424][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 124.929646][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 124.929865][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 124.930048][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 124.930281][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 124.930511][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 124.930732][ T227] ksys_write (fs/read_write.c:731) 
[ 124.930899][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 124.931138][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 124.931377][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  124.931648][  T227] RIP: 0033:0x7f565333eb77
[ 124.931905][ T227] 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
[  124.932619][  T227] RSP: 002b:00007fff8f7ec398 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  124.932948][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f565333eb77
[  124.933282][  T227] RDX: 0000000000000002 RSI: 000055c5d05ff330 RDI: 0000000000000001
[  124.933598][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[  124.933912][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000002
[  124.934255][  T227] R13: 00007f56533fa760 R14: 0000000000000002 R15: 00007f56533f59c0
| [  126.909273][  T227] ------------[ cut here ]------------
| [ 126.909716][ T227] WARNING: CPU: 3 PID: 227 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) 
| [  126.910219][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  126.911189][  T227] Tainted: [W]=WARN
[  126.911371][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 126.911664][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 126.911966][ T227] 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
[  126.912908][  T227] RSP: 0018:ffffc90000b07520 EFLAGS: 00010246
[  126.913306][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  126.913651][  T227] RDX: 0000000000000000 RSI: ffff88800255ac98 RDI: ffff8880061c0b78
[  126.914009][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[  126.914461][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[  126.914812][  T227] R13: ffff88800255a128 R14: ffff88800255a008 R15: ffff88800255a000
[  126.915256][  T227] FS:  00007f56531fd740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  126.915665][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  126.916230][  T227] CR2: 00005560cca62f08 CR3: 000000000b8ea003 CR4: 0000000000772ef0
[  126.916632][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  126.917030][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  126.917404][  T227] PKRU: 55555554
[  126.917584][  T227] Call Trace:
[  126.917771][  T227]  <TASK>
[ 126.917897][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 126.918172][ T227] ? __warn (kernel/panic.c:748) 
[ 126.918369][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 126.918612][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 126.918858][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 126.919043][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 126.919291][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 126.919544][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 126.919798][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 126.920096][ T227] ? _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) 
[ 126.920353][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 126.920598][ T227] register_netdevice (net/core/dev.c:11003) 
[ 126.920849][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 126.921097][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 126.921385][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 126.921693][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 126.921877][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 126.922195][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 126.922507][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 126.922815][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 126.923072][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 126.923395][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 126.923644][ T227] ? 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)) 
[ 126.923826][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 126.924083][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 126.924342][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 126.924586][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 126.924824][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 126.925069][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 126.925391][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 126.925650][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 126.925888][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 126.926133][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 126.926389][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 126.926631][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 126.926871][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 126.927104][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 126.927364][ T227] ? 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) 
[ 126.927615][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 126.927858][ T227] device_add (drivers/base/core.c:3672) 
[ 126.928116][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 126.928366][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 126.928621][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 126.928934][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 126.929266][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 126.929508][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 126.929752][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 126.929986][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 126.930243][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 126.930434][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 126.930678][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 126.931022][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 126.931279][ T227] ksys_write (fs/read_write.c:731) 
[ 126.931455][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 126.931696][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 126.931930][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  126.932230][  T227] RIP: 0033:0x7f565333eb77
[ 126.932472][ T227] 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
[  126.933271][  T227] RSP: 002b:00007fff8f7eea98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  126.933607][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f565333eb77
[  126.933938][  T227] RDX: 0000000000000004 RSI: 000055c5d05ff330 RDI: 0000000000000001
[  126.934285][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[  126.934610][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000004
[  126.934987][  T227] R13: 00007f56533fa760 R14: 0000000000000004 R15: 00007f56533f59c0
| [  127.043060][  T227] ------------[ cut here ]------------
| [ 127.043534][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  127.044017][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  127.044951][  T227] Tainted: [W]=WARN
[  127.045139][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 127.045443][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 127.045736][ T227] 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
[  127.046541][  T227] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[  127.046841][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  127.047197][  T227] RDX: 0000000000000000 RSI: ffff88800d42ac98 RDI: ffff8880061c0b28
[  127.047550][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[  127.047922][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[  127.048276][  T227] R13: ffff88800d42a128 R14: ffff88800d42a008 R15: ffff88800d42a000
[  127.048613][  T227] FS:  00007f56531fd740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  127.049000][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  127.049294][  T227] CR2: 000055c5d05ff330 CR3: 000000000b8ea006 CR4: 0000000000772ef0
[  127.049635][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  127.050129][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  127.050470][  T227] PKRU: 55555554
[  127.050647][  T227] Call Trace:
[  127.050831][  T227]  <TASK>
[ 127.050956][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 127.051192][ T227] ? __warn (kernel/panic.c:748) 
[ 127.051393][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 127.051649][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 127.051892][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 127.052075][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 127.052323][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 127.052576][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 127.052848][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 127.053182][ T227] ? _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) 
[ 127.053436][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 127.053766][ T227] register_netdevice (net/core/dev.c:11003) 
[ 127.054030][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 127.054276][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 127.054524][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 127.054805][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 127.055082][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 127.055385][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 127.055607][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 127.055826][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 127.056133][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 127.056364][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 127.056576][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 127.056841][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 127.057076][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 127.057271][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 127.057508][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 127.057742][ T227] ? 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) 
[ 127.057988][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 127.058250][ T227] ksys_write (fs/read_write.c:731) 
[ 127.058423][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 127.058669][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 127.058914][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 127.059176][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  127.059474][  T227] RIP: 0033:0x7f565333eb77
[ 127.059705][ T227] 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
[  127.060454][  T227] RSP: 002b:00007fff8f7eea98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  127.060777][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f565333eb77
[  127.061118][  T227] RDX: 0000000000000002 RSI: 000055c5d05ff330 RDI: 0000000000000001
[  127.061451][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[  127.061760][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000002
[  127.062099][  T227] R13: 00007f56533fa760 R14: 0000000000000002 R15: 00007f56533f59c0
| [  127.721129][  T227] ------------[ cut here ]------------
| [ 127.721579][ T227] WARNING: CPU: 2 PID: 227 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) 
| [  127.722250][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  127.723500][  T227] Tainted: [W]=WARN
[  127.723742][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 127.724193][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 127.724639][ T227] 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
[  127.725832][  T227] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[  127.726299][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  127.726815][  T227] RDX: 0000000000000000 RSI: ffff88800babac98 RDI: ffff8880061c0b28
[  127.727350][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[  127.727875][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[  127.728420][  T227] R13: ffff88800baba128 R14: ffff88800baba008 R15: ffff88800baba000
[  127.728933][  T227] FS:  00007f56531fd740(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[  127.729535][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  127.729992][  T227] CR2: 000055c5d05ff330 CR3: 000000000b8ea006 CR4: 0000000000772ef0
[  127.730528][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  127.731042][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  127.731571][  T227] PKRU: 55555554
[  127.731837][  T227] Call Trace:
[  127.732033][  T227]  <TASK>
[ 127.732171][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 127.732432][ T227] ? __warn (kernel/panic.c:748) 
[ 127.732648][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 127.733005][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 127.733372][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 127.733644][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 127.733983][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 127.734370][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 127.734737][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 127.735180][ T227] ? _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) 
[ 127.735538][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 127.735888][ T227] register_netdevice (net/core/dev.c:11003) 
[ 127.736268][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 127.736636][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 127.737004][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 127.737457][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 127.737940][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 127.738397][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 127.738738][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 127.739094][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 127.739538][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 127.739872][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 127.740247][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 127.740591][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 127.740930][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 127.741117][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 127.741365][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 127.741621][ T227] ? 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) 
[ 127.741937][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 127.742316][ T227] ksys_write (fs/read_write.c:731) 
[ 127.742578][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 127.742928][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 127.743317][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 127.743648][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  127.744052][  T227] RIP: 0033:0x7f565333eb77
[ 127.744412][ T227] 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
[  127.745525][  T227] RSP: 002b:00007fff8f7eea98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  127.746017][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f565333eb77
[  127.746505][  T227] RDX: 0000000000000002 RSI: 000055c5d05ff330 RDI: 0000000000000001
[  127.746987][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[  127.747488][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000002
[  127.747983][  T227] R13: 00007f56533fa760 R14: 0000000000000002 R15: 00007f56533f59c0
| [  136.547836][  T227] ------------[ cut here ]------------
| [ 136.548449][ T227] WARNING: CPU: 3 PID: 227 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) 
| [  136.549138][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  136.550849][  T227] Tainted: [W]=WARN
[  136.551121][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 136.551596][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 136.552069][ T227] 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
[  136.553339][  T227] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[  136.553761][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  136.554307][  T227] RDX: 0000000000000000 RSI: ffff88800b5eac98 RDI: ffff8880061c0b28
[  136.554800][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[  136.555311][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[  136.555817][  T227] R13: ffff88800b5ea128 R14: ffff88800b5ea008 R15: ffff88800b5ea000
[  136.556347][  T227] FS:  00007f56531fd740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  136.556954][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  136.557385][  T227] CR2: 000055c5d05e26c0 CR3: 000000000b8ea005 CR4: 0000000000772ef0
[  136.557905][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  136.558462][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  136.558988][  T227] PKRU: 55555554
[  136.559294][  T227] Call Trace:
[  136.559545][  T227]  <TASK>
[ 136.559730][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 136.560091][ T227] ? __warn (kernel/panic.c:748) 
[ 136.560436][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 136.560775][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 136.561126][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 136.561411][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 136.561781][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 136.562131][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 136.562498][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 136.562937][ T227] ? _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) 
[ 136.563374][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 136.563757][ T227] register_netdevice (net/core/dev.c:11003) 
[ 136.564124][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 136.564515][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 136.564902][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 136.565396][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 136.565884][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 136.566354][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 136.566690][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 136.567109][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 136.567596][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 136.567978][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 136.568352][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 136.568702][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 136.569066][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 136.569367][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 136.569726][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 136.570088][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 136.570475][ T227] ksys_write (fs/read_write.c:731) 
[ 136.570757][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 136.571127][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 136.571525][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  136.571943][  T227] RIP: 0033:0x7f565333eb77
[ 136.572329][ T227] 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
[  136.573547][  T227] RSP: 002b:00007fff8f7eea98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  136.574084][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f565333eb77
[  136.574616][  T227] RDX: 0000000000000002 RSI: 000055c5d05ff330 RDI: 0000000000000001
[  136.575112][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[  136.575651][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000002
[  136.576179][  T227] R13: 00007f56533fa760 R14: 0000000000000002 R15: 00007f56533f59c0
| [  139.469831][  T227] ------------[ cut here ]------------
| [ 139.470563][ T227] WARNING: CPU: 3 PID: 227 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) 
| [  139.471053][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  139.471973][  T227] Tainted: [W]=WARN
[  139.472183][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 139.472462][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 139.472764][ T227] 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
[  139.473541][  T227] RSP: 0018:ffffc90000b07520 EFLAGS: 00010246
[  139.473837][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  139.474186][  T227] RDX: 0000000000000000 RSI: ffff88800990ac98 RDI: ffff8880061c0b78
[  139.474520][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[  139.475041][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[  139.475408][  T227] R13: ffff88800990a128 R14: ffff88800990a008 R15: ffff88800990a000
[  139.475750][  T227] FS:  00007f56531fd740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  139.476138][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  139.476440][  T227] CR2: 000055c5d05dbcdc CR3: 000000000b8ea006 CR4: 0000000000772ef0
[  139.476780][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  139.477131][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  139.477519][  T227] PKRU: 55555554
[  139.477694][  T227] Call Trace:
[  139.477884][  T227]  <TASK>
[ 139.478004][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 139.478257][ T227] ? __warn (kernel/panic.c:748) 
[ 139.478434][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 139.478773][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 139.479186][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 139.479459][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 139.479834][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 139.480269][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 139.480637][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 139.481043][ T227] ? _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) 
[ 139.481446][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 139.481801][ T227] register_netdevice (net/core/dev.c:11003) 
[ 139.482205][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 139.482604][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 139.482994][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 139.483494][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 139.483774][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 139.484280][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 139.484758][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 139.485257][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 139.485650][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 139.486105][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 139.486493][ T227] ? 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)) 
[ 139.486772][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 139.487127][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 139.487535][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 139.487929][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 139.488324][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 139.488698][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 139.489115][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 139.489368][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 139.489654][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 139.489879][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 139.490100][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 139.490345][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 139.490580][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 139.490809][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 139.491035][ T227] ? 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) 
[ 139.491278][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 139.491491][ T227] device_add (drivers/base/core.c:3672) 
[ 139.491709][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 139.491918][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 139.492137][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 139.492418][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 139.492720][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 139.492950][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 139.493178][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 139.493386][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 139.493601][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 139.493839][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 139.494055][ T227] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 139.494290][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 139.494516][ T227] ksys_write (fs/read_write.c:731) 
[ 139.494721][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 139.495102][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 139.495487][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  139.495856][  T227] RIP: 0033:0x7f565333eb77
[ 139.496083][ T227] 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
[  139.496849][  T227] RSP: 002b:00007fff8f7eea98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  139.497171][  T227] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f565333eb77
[  139.497478][  T227] RDX: 0000000000000004 RSI: 000055c5d05ff330 RDI: 0000000000000001
[  139.497978][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[  139.498536][  T227] R10: 00007f56533b13e0 R11: 0000000000000246 R12: 0000000000000004
[  139.499061][  T227] R13: 00007f56533fa760 R14: 0000000000000004 R15: 00007f56533f59c0
| [  139.668605][  T227] ------------[ cut here ]------------
| [ 139.669169][ T227] WARNING: CPU: 3 PID: 227 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) 
| [  139.669829][  T227] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  139.671352][  T227] Tainted: [W]=WARN
[  139.671621][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 139.672047][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 139.672493][ T227] 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
[  139.673707][  T227] RSP: 0018:ffffc90000b07910 EFLAGS: 00010246
[  139.674162][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  139.674663][  T227] RDX: 0000000000000000 RSI: ffff88800d432c98 RDI: ffff8880061c0b28
[  139.675181][  T227] RBP: ffffffffb9323440 R08: 0000000000000000 R09: fffffbfff6e3d83c
[  139.675700][  T227] R10: ffffffffb71ec1e7 R11: ffff8880061c0040 R12: 0000000000000000
[  139.676233][  T227] R13: ffff88800d432128 R14: ffff88800d432008 R15: ffff88800d432000
[  139.676733][  T227] FS:  00007f56531fd740(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[  139.677328][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  139.677756][  T227] CR2: 00007f56533b1733 CR3: 000000000b8ea006 CR4: 0000000000772ef0
[  139.678310][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  139.678815][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  139.679700][  T227] PKRU: 55555554
[  139.679973][  T227] Call Trace:
[  139.680240][  T227]  <TASK>
[ 139.680416][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 139.680775][ T227] ? __warn (kernel/panic.c:748) 
[ 139.681053][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 139.681431][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 139.681790][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 139.682056][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 139.682445][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 139.682839][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 139.683230][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 139.683662][ T227] ? _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) 
[ 139.684021][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 139.684385][ T227] register_netdevice (net/core/dev.c:11003) 
[ 139.684735][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 139.685099][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 139.685493][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 139.686002][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 139.686516][ T227] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 139.686959][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 139.687312][ T227] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 139.687678][ T227] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 139.688142][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 139.688496][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 139.688846][ T227] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 139.689212][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 139.689564][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 139.689837][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 139.690208][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 139.690532][ T227] ? 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) 
[ 139.690873][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 139.691251][ T227] ksys_write (fs/read_write.c:731) 
[ 139.691517][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 139.691839][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 139.692201][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 139.692536][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  139.692939][  T227] RIP: 0033:0x7f565333eb77
[ 139.693314][ T227] 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
[  139.694474][  T227] RSP: 002b:00007fff8f7eea98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  139.694979][  T227] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f565333eb77
[  139.695513][  T227] RDX: 0000000000000002 RSI: 000055c5d05ff330 RDI: 0000000000000001
[  139.696016][  T227] RBP: 000055c5d05ff330 R08: 0000000000000000 R09: 00007f56533b14e0
[  139.696524][  T227] R10: 00007f56533b13e0 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