======================================
| 0
| xx__-> [   12.761137][  T218] ------------[ cut here ]------------
| [ 12.761644][ T218] WARNING: CPU: 1 PID: 218 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) 
| [   12.762145][  T218] Modules linked in: netdevsim
[   12.762776][  T218] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 12.763076][ T218] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 12.763451][ T218] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 90 0c 00 00 be ff ff ff ff e8 08 e9 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 90 0c 00 00 	lea    0xc90(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 08 e9 78 00       	call   0x78e929
  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
[   12.764275][  T218] RSP: 0018:ffffc90000ab7548 EFLAGS: 00010246
[   12.764599][  T218] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   12.765184][  T218] RDX: 0000000000000000 RSI: ffff888005072c90 RDI: ffff88800bcb8b78
[   12.765600][  T218] RBP: ffffffff8db28600 R08: 0000000000000000 R09: fffffbfff173d944
[   12.765967][  T218] R10: ffffffff8b9eca27 R11: ffff88800bcb8040 R12: 0000000000000000
[   12.766302][  T218] R13: ffff888005072128 R14: ffff888005072008 R15: ffff888005072000
[   12.766671][  T218] FS:  00007f4585ec21c0(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   12.767055][  T218] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   12.767333][  T218] CR2: 00007f4586542618 CR3: 000000000b9ce003 CR4: 0000000000772ef0
[   12.767704][  T218] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   12.768071][  T218] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   12.768438][  T218] PKRU: 55555554
[   12.768685][  T218] Call Trace:
[   12.768871][  T218]  <TASK>
[ 12.769006][ T218] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 12.769275][ T218] ? __warn (kernel/panic.c:748) 
[ 12.769477][ T218] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 12.769737][ T218] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 12.769986][ T218] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 12.770177][ T218] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 12.770429][ T218] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 12.770700][ T218] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 12.770935][ T218] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 12.771171][ T218] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 12.771482][ T218] ? _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) 
[ 12.771745][ T218] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 12.771995][ T218] register_netdevice (net/core/dev.c:11003) 
[ 12.772243][ T218] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 12.772518][ T218] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 12.772768][ T218] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 12.773065][ T218] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 12.773384][ T218] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 12.773713][ T218] nsim_drv_probe (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 12.773961][ T218] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 12.774255][ T218] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 12.774513][ T218] ? 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)) 
[ 12.774693][ T218] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 12.774936][ T218] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 12.775174][ T218] __driver_probe_device (drivers/base/dd.c:800) 
[ 12.775426][ T218] driver_probe_device (drivers/base/dd.c:830) 
[ 12.775669][ T218] __device_attach_driver (drivers/base/dd.c:959) 
[ 12.775905][ T218] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 12.776188][ T218] bus_for_each_drv (drivers/base/bus.c:462) 
[ 12.776429][ T218] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 12.776675][ T218] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 12.776908][ T218] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 12.777142][ T218] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 12.777391][ T218] __device_attach (drivers/base/dd.c:1030) 
[ 12.777683][ T218] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 12.777915][ T218] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 12.778147][ T218] ? 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) 
[ 12.778394][ T218] bus_probe_device (drivers/base/bus.c:537) 
[ 12.778631][ T218] device_add (drivers/base/core.c:3672) 
[ 12.778854][ T218] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 12.779064][ T218] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 12.779319][ T218] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 12.779629][ T218] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 12.779907][ T218] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 12.780118][ T218] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 12.780336][ T218] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 12.780579][ T218] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 12.780804][ T218] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 12.780974][ T218] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 12.781227][ T218] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 12.781459][ T218] ? 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) 
[ 12.781720][ T218] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 12.781941][ T218] ksys_write (fs/read_write.c:731) 
[ 12.782107][ T218] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 12.782347][ T218] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 12.782616][ T218] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 12.782857][ T218] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   12.783123][  T218] RIP: 0033:0x7f45860dcb77
[ 12.783357][ T218] 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
[   12.784173][  T218] RSP: 002b:00007ffea4dfccb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   12.784523][  T218] RAX: ffffffffffffffda RBX: 00007f4585ec2140 RCX: 00007f45860dcb77
[   12.784847][  T218] RDX: 0000000000000009 RSI: 0000561184b65f80 RDI: 0000000000000005
[   12.785213][  T218] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[   12.785569][  T218] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f4577ece400
[   12.785903][  T218] R13: 0000561184b65f80 R14: 0000000000000005 R15: 00005611848bc980
| [   13.872495][  T218] ------------[ cut here ]------------
| [ 13.872892][ T218] WARNING: CPU: 3 PID: 218 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) 
| [   13.873554][  T218] Modules linked in: netdevsim
| [   13.874164][  T218] Tainted: [W]=WARN
[   13.874356][  T218] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 13.874641][ T218] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 13.874918][ T218] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 90 0c 00 00 be ff ff ff ff e8 08 e9 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 90 0c 00 00 	lea    0xc90(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 08 e9 78 00       	call   0x78e929
  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
[   13.875716][  T218] RSP: 0018:ffffc90000ab7548 EFLAGS: 00010246
[   13.875984][  T218] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   13.876300][  T218] RDX: 0000000000000000 RSI: ffff88800e5b2c90 RDI: ffff88800bcb8b78
[   13.876657][  T218] RBP: ffffffff8db28600 R08: 0000000000000000 R09: fffffbfff173d944
[   13.877017][  T218] R10: ffffffff8b9eca27 R11: ffff88800bcb8040 R12: 0000000000000000
[   13.877497][  T218] R13: ffff88800e5b2128 R14: ffff88800e5b2008 R15: ffff88800e5b2000
[   13.877988][  T218] FS:  00007f4585ec21c0(0000) GS:ffff888036180000(0000) knlGS:0000000000000000
[   13.878594][  T218] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   13.879052][  T218] CR2: 00007f7cd32b8a00 CR3: 000000000b9ce001 CR4: 0000000000772ef0
[   13.879620][  T218] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   13.880167][  T218] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   13.880721][  T218] PKRU: 55555554
[   13.880995][  T218] Call Trace:
[   13.881249][  T218]  <TASK>
[ 13.881455][ T218] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 13.881815][ T218] ? __warn (kernel/panic.c:748) 
[ 13.882094][ T218] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 13.882489][ T218] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 13.882870][ T218] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 13.883144][ T218] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 13.883516][ T218] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 13.883896][ T218] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 13.884210][ T218] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 13.884507][ T218] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 13.884922][ T218] ? _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) 
[ 13.885273][ T218] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 13.885682][ T218] register_netdevice (net/core/dev.c:11003) 
[ 13.886068][ T218] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 13.886460][ T218] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 13.886880][ T218] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 13.887347][ T218] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 13.887828][ T218] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 13.888273][ T218] nsim_drv_probe (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 13.888699][ T218] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 13.889176][ T218] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 13.889553][ T218] ? 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)) 
[ 13.889824][ T218] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 13.890182][ T218] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 13.890572][ T218] __driver_probe_device (drivers/base/dd.c:800) 
[ 13.890947][ T218] driver_probe_device (drivers/base/dd.c:830) 
[ 13.891307][ T218] __device_attach_driver (drivers/base/dd.c:959) 
[ 13.891687][ T218] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 13.892123][ T218] bus_for_each_drv (drivers/base/bus.c:462) 
[ 13.892501][ T218] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 13.892839][ T218] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 13.893157][ T218] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 13.893513][ T218] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 13.893853][ T218] __device_attach (drivers/base/dd.c:1030) 
[ 13.894197][ T218] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 13.894566][ T218] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 13.894909][ T218] ? 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) 
[ 13.895334][ T218] bus_probe_device (drivers/base/bus.c:537) 
[ 13.895685][ T218] device_add (drivers/base/core.c:3672) 
[ 13.896036][ T218] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 13.896351][ T218] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 13.896758][ T218] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 13.897210][ T218] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 13.897702][ T218] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 13.898081][ T218] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 13.898475][ T218] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 13.898827][ T218] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 13.899222][ T218] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 13.899529][ T218] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 13.899888][ T218] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 13.900231][ T218] ? 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) 
[ 13.900649][ T218] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 13.900990][ T218] ksys_write (fs/read_write.c:731) 
[ 13.901261][ T218] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 13.901634][ T218] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 13.901975][ T218] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 13.902312][ T218] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   13.902755][  T218] RIP: 0033:0x7f45860dcb77
[ 13.903137][ T218] 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
[   13.904353][  T218] RSP: 002b:00007ffea4dfcc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   13.904900][  T218] RAX: ffffffffffffffda RBX: 00007f4585ec2140 RCX: 00007f45860dcb77
[   13.905443][  T218] RDX: 0000000000000009 RSI: 0000561184b65f80 RDI: 0000000000000005
[   13.905945][  T218] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[   13.906404][  T218] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f4577ece400
[   13.906732][  T218] R13: 0000561184b65f80 R14: 0000000000000005 R15: 00005611848bc980
| [   14.433626][  T237] ------------[ cut here ]------------
| [ 14.434189][ T237] WARNING: CPU: 1 PID: 237 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) 
| [   14.434867][  T237] Modules linked in: netdevsim
| [   14.435458][  T237] Tainted: [W]=WARN
[   14.435610][  T237] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 14.435889][ T237] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 14.436151][ T237] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 90 0c 00 00 be ff ff ff ff e8 08 e9 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 90 0c 00 00 	lea    0xc90(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 08 e9 78 00       	call   0x78e929
  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
[   14.436915][  T237] RSP: 0018:ffffc900005171f0 EFLAGS: 00010246
[   14.437170][  T237] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   14.437503][  T237] RDX: 0000000000000000 RSI: ffff888005272c90 RDI: ffff88800a1cadc0
[   14.437886][  T237] RBP: ffff8880052b8040 R08: 0000000000000000 R09: fffffbfff173d944
[   14.438186][  T237] R10: ffffffff8b9eca27 R11: ffff88800a1ca300 R12: 0000000000000000
[   14.438507][  T237] R13: ffff888005272128 R14: ffff888005272008 R15: ffff888005272000
[   14.438800][  T237] FS:  00007ffb9b998800(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   14.439193][  T237] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   14.439676][  T237] CR2: 00007ffb9bad7440 CR3: 00000000095c8003 CR4: 0000000000772ef0
[   14.440010][  T237] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   14.440294][  T237] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   14.440610][  T237] PKRU: 55555554
[   14.440768][  T237] Call Trace:
[   14.440917][  T237]  <TASK>
[ 14.441027][ T237] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 14.441238][ T237] ? __warn (kernel/panic.c:748) 
[ 14.441407][ T237] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 14.441611][ T237] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 14.441820][ T237] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 14.441979][ T237] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 14.442561][ T237] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 14.442782][ T237] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 14.443018][ T237] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 14.443263][ T237] ? _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) 
[ 14.443484][ T237] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 14.443730][ T237] register_netdevice (net/core/dev.c:11003) 
[ 14.443937][ T237] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 14.444158][ T237] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 14.444434][ T237] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 14.444791][ T237] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 14.445163][ T237] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 14.445591][ T237] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 14.446026][ T237] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 14.446492][ T237] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 14.446931][ T237] devlink_reload (net/devlink/dev.c:474) 
[ 14.447269][ T237] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 14.447608][ T237] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 14.447947][ T237] ? cap_capable (security/commoncap.c:131) 
[ 14.448261][ T237] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1146 fs/file.c:1160) 
[ 14.448558][ T237] devlink_nl_reload_doit (net/devlink/dev.c:584) 
[ 14.448862][ T237] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 14.449262][ T237] ? __nla_parse (lib/nlattr.c:732) 
[ 14.449644][ T237] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1115) 
[ 14.449990][ T237] ? __pfx_genl_family_rcv_msg_doit (net/netlink/genetlink.c:1088) 
[ 14.450451][ T237] ? cap_capable (security/commoncap.c:131) 
[ 14.450777][ T237] ? validate_chain (kernel/locking/lockdep.c:3799 kernel/locking/lockdep.c:3819 kernel/locking/lockdep.c:3874) 
[ 14.451110][ T237] genl_family_rcv_msg (net/netlink/genetlink.c:1195) 
[ 14.451450][ T237] ? __pfx_genl_family_rcv_msg (net/netlink/genetlink.c:1160) 
[ 14.451759][ T237] ? __pfx_devlink_nl_pre_doit_dev_lock (net/devlink/netlink.c:257) 
[ 14.452126][ T237] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 14.452517][ T237] ? __pfx_devlink_nl_post_doit_dev_lock (net/devlink/netlink.c:288) 
[ 14.452957][ T237] genl_rcv_msg (net/netlink/genetlink.c:65 net/netlink/genetlink.c:1211) 
[ 14.453306][ T237] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 14.453570][ T237] ? __pfx_genl_rcv_msg (net/netlink/genetlink.c:1201) 
[ 14.453772][ T237] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 14.453986][ T237] ? genl_rcv (net/netlink/genetlink.c:1219) 
[ 14.454134][ T237] ? __pfx_down_read (kernel/locking/rwsem.c:1522) 
[ 14.454336][ T237] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 14.454582][ T237] genl_rcv (net/netlink/genetlink.c:1220) 
[ 14.454731][ T237] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 14.454938][ T237] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 14.455147][ T237] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 14.455350][ T237] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 14.455565][ T237] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 14.455754][ T237] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 14.455957][ T237] ? __might_fault (mm/memory.c:6851 mm/memory.c:6844) 
[ 14.456162][ T237] __sys_sendto (net/socket.c:709 net/socket.c:724 net/socket.c:2178) 
[ 14.456388][ T237] ? __pfx___sys_sendto (net/socket.c:2145) 
[ 14.456586][ T237] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 14.456779][ T237] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 14.456993][ T237] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 14.457194][ T237] ? __rseq_handle_notify_resume (kernel/rseq.c:420) 
[ 14.457455][ T237] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:403) 
[ 14.457700][ T237] ? __pfx___x64_sys_openat (fs/open.c:1454) 
[ 14.457909][ T237] __x64_sys_sendto (net/socket.c:2181) 
[ 14.458147][ T237] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 14.458431][ T237] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 14.458650][ T237] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   14.458900][  T237] RIP: 0033:0x7ffb9bba4a4a
[ 14.459130][ T237] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89
All code
========
   0:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   4:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   b:	eb b8                	jmp    0xffffffffffffffc5
   d:	0f 1f 00             	nopl   (%rax)
  10:	f3 0f 1e fa          	endbr64
  14:	41 89 ca             	mov    %ecx,%r10d
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 15                	jne    0x38
  23:	b8 2c 00 00 00       	mov    $0x2c,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 7e                	ja     0xb0
  32:	c3                   	ret
  33:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  38:	41 54                	push   %r12
  3a:	48 83 ec 30          	sub    $0x30,%rsp
  3e:	44                   	rex.R
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 7e                	ja     0x86
   8:	c3                   	ret
   9:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   e:	41 54                	push   %r12
  10:	48 83 ec 30          	sub    $0x30,%rsp
  14:	44                   	rex.R
  15:	89                   	.byte 0x89
[   14.459827][  T237] RSP: 002b:00007ffeb5a9eb08 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   14.460137][  T237] RAX: ffffffffffffffda RBX: 000000003fc11b00 RCX: 00007ffb9bba4a4a
[   14.460455][  T237] RDX: 0000000000000040 RSI: 000000003fc11b00 RDI: 0000000000000003
[   14.460752][  T237] RBP: 000000003fc11910 R08: 00007ffb9bd48200 R09: 000000000000000c
[   14.461047][  T237] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000040f200


Finger prints:
__netdev_update_features:register_netdevice:nsim_create:__nsim_dev_port_add:nsim_drv_probe
__netdev_update_features:register_netdevice:nsim_create:__nsim_dev_port_add:nsim_dev_reload_create