======================================
| 0
| xx__-> [   12.526547][  T228] ------------[ cut here ]------------
| [ 12.526989][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   12.527418][  T228] Modules linked in: netdevsim
[   12.528058][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 12.528328][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 12.528636][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   12.529329][  T228] RSP: 0018:ffffc90000a77910 EFLAGS: 00010246
[   12.529610][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   12.529953][  T228] RDX: 0000000000000000 RSI: ffff88800a5eac98 RDI: ffff88800905ade8
[   12.530298][  T228] RBP: ffffffffa0523440 R08: 0000000000000000 R09: fffffbfff3c7d83c
[   12.530599][  T228] R10: ffffffff9e3ec1e7 R11: ffff88800905a300 R12: 0000000000000000
[   12.531132][  T228] R13: ffff88800a5ea128 R14: ffff88800a5ea008 R15: ffff88800a5ea000
[   12.531456][  T228] FS:  00007fc16411d740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[   12.531864][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   12.532142][  T228] CR2: 0000556e8abf547c CR3: 000000000a460003 CR4: 0000000000772ef0
[   12.532468][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   12.532830][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   12.533172][  T228] PKRU: 55555554
[   12.533336][  T228] Call Trace:
[   12.533507][  T228]  <TASK>
[ 12.533660][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 12.533903][ T228] ? __warn (kernel/panic.c:748) 
[ 12.534083][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 12.534299][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 12.534601][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 12.534913][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 12.535158][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 12.535410][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 12.535668][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 12.535963][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 12.536212][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 12.536458][ T228] register_netdevice (net/core/dev.c:11003) 
[ 12.536724][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 12.536976][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 12.537243][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 12.537542][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 12.537879][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 12.538184][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 12.538434][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 12.538701][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 12.539007][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 12.539239][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 12.539479][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 12.539736][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 12.539990][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 12.540167][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 12.540388][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 12.540626][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 12.540853][ T228] ksys_write (fs/read_write.c:731) 
[ 12.541019][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 12.541236][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 12.541461][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   12.541734][  T228] RIP: 0033:0x7fc16425eb77
[ 12.542197][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   12.542954][  T228] RSP: 002b:00007fff9357d578 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   12.543279][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc16425eb77
[   12.543582][  T228] RDX: 0000000000000002 RSI: 0000556e8adde130 RDI: 0000000000000001
[   12.543956][  T228] RBP: 0000556e8adde130 R08: 0000000000000000 R09: 00007fc1642d14e0
[   12.544300][  T228] R10: 00007fc1642d13e0 R11: 0000000000000246 R12: 0000000000000002
[   12.544635][  T228] R13: 00007fc16431a760 R14: 0000000000000002 R15: 00007fc1643159c0
| [  162.376080][  T228] ------------[ cut here ]------------
| [ 162.376336][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  162.376892][  T228] Modules linked in: netdevsim
| [  162.377522][  T228] Tainted: [W]=WARN
[  162.377770][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 162.378106][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 162.378379][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  162.379099][  T228] RSP: 0018:ffffc90000a77910 EFLAGS: 00010246
[  162.379417][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  162.379744][  T228] RDX: 0000000000000000 RSI: ffff88800d522c98 RDI: ffff88800905ade8
[  162.380070][  T228] RBP: ffffffffa0523440 R08: 0000000000000000 R09: fffffbfff3c7d83c
[  162.380386][  T228] R10: ffffffff9e3ec1e7 R11: ffff88800905a300 R12: 0000000000000000
[  162.380717][  T228] R13: ffff88800d522128 R14: ffff88800d522008 R15: ffff88800d522000
[  162.381058][  T228] FS:  00007fc16411d740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[  162.381406][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  162.381685][  T228] CR2: 0000556e8ac1a4f8 CR3: 000000000a460001 CR4: 0000000000772ef0
[  162.381996][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  162.382291][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  162.382590][  T228] PKRU: 55555554
[  162.382761][  T228] Call Trace:
[  162.382935][  T228]  <TASK>
[ 162.383050][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 162.383256][ T228] ? __warn (kernel/panic.c:748) 
[ 162.383421][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 162.383671][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 162.383896][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 162.384080][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 162.384285][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 162.384520][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 162.384804][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 162.385136][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 162.385408][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 162.385714][ T228] register_netdevice (net/core/dev.c:11003) 
[ 162.386046][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 162.386325][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 162.386593][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 162.386960][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 162.387304][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 162.387718][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 162.388054][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 162.388404][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 162.388848][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 162.389190][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 162.389518][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 162.389751][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 162.389979][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 162.390147][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 162.390349][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 162.390572][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 162.390813][ T228] ksys_write (fs/read_write.c:731) 
[ 162.390966][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 162.391185][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 162.391427][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  162.391700][  T228] RIP: 0033:0x7fc16425eb77
[ 162.391990][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  162.392724][  T228] RSP: 002b:00007fff9357c208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  162.393036][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc16425eb77
[  162.393327][  T228] RDX: 0000000000000002 RSI: 0000556e8adde130 RDI: 0000000000000001
[  162.393666][  T228] RBP: 0000556e8adde130 R08: 0000000000000000 R09: 00007fc1642d14e0
[  162.393978][  T228] R10: 00007fc1642d13e0 R11: 0000000000000246 R12: 0000000000000002
[  162.394275][  T228] R13: 00007fc16431a760 R14: 0000000000000002 R15: 00007fc1643159c0
| [  164.063254][  T228] ------------[ cut here ]------------
| [ 164.063540][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  164.064056][  T228] Modules linked in: netdevsim
| [  164.064878][  T228] Tainted: [W]=WARN
[  164.065073][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 164.065317][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 164.065730][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  164.066566][  T228] RSP: 0018:ffffc90000a77910 EFLAGS: 00010246
[  164.066971][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  164.067301][  T228] RDX: 0000000000000000 RSI: ffff88800f222c98 RDI: ffff88800905ade8
[  164.067754][  T228] RBP: ffffffffa0523440 R08: 0000000000000000 R09: fffffbfff3c7d83c
[  164.068040][  T228] R10: ffffffff9e3ec1e7 R11: ffff88800905a300 R12: 0000000000000000
[  164.068409][  T228] R13: ffff88800f222128 R14: ffff88800f222008 R15: ffff88800f222000
[  164.068856][  T228] FS:  00007fc16411d740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[  164.069225][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  164.069510][  T228] CR2: 0000556e8abf547c CR3: 000000000a460001 CR4: 0000000000772ef0
[  164.069945][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  164.070339][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  164.070727][  T228] PKRU: 55555554
[  164.070879][  T228] Call Trace:
[  164.071122][  T228]  <TASK>
[ 164.071228][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 164.071417][ T228] ? __warn (kernel/panic.c:748) 
[ 164.071748][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 164.071964][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 164.072240][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 164.072391][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 164.072591][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 164.073002][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 164.073212][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 164.073516][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 164.073727][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 164.073983][ T228] register_netdevice (net/core/dev.c:11003) 
[ 164.074196][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 164.074406][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 164.074685][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 164.074937][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 164.075228][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 164.075474][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 164.075714][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 164.075929][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 164.076252][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 164.076452][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 164.076663][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 164.076914][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 164.077188][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 164.077387][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 164.077674][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 164.077880][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 164.078084][ T228] ksys_write (fs/read_write.c:731) 
[ 164.078234][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 164.078431][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 164.078634][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  164.078866][  T228] RIP: 0033:0x7fc16425eb77
[ 164.079074][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  164.079926][  T228] RSP: 002b:00007fff9357c208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  164.080321][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc16425eb77
[  164.080722][  T228] RDX: 0000000000000002 RSI: 0000556e8adde130 RDI: 0000000000000001
[  164.081119][  T228] RBP: 0000556e8adde130 R08: 0000000000000000 R09: 00007fc1642d14e0
[  164.081467][  T228] R10: 00007fc1642d13e0 R11: 0000000000000246 R12: 0000000000000002
[  164.081804][  T228] R13: 00007fc16431a760 R14: 0000000000000002 R15: 00007fc1643159c0
| [  165.652892][  T228] ------------[ cut here ]------------
| [ 165.653153][ T228] WARNING: CPU: 3 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  165.654798][  T228] Modules linked in: netdevsim
| [  165.655416][  T228] Tainted: [W]=WARN
[  165.655562][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 165.655976][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 165.656320][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  165.657269][  T228] RSP: 0018:ffffc90000a77910 EFLAGS: 00010246
[  165.657570][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  165.658055][  T228] RDX: 0000000000000000 RSI: ffff888005152c98 RDI: ffff88800905ade8
[  165.658367][  T228] RBP: ffffffffa0523440 R08: 0000000000000000 R09: fffffbfff3c7d83c
[  165.658793][  T228] R10: ffffffff9e3ec1e7 R11: ffff88800905a300 R12: 0000000000000000
[  165.659095][  T228] R13: ffff888005152128 R14: ffff888005152008 R15: ffff888005152000
[  165.659448][  T228] FS:  00007fc16411d740(0000) GS:ffff88802f580000(0000) knlGS:0000000000000000
[  165.659815][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  165.660069][  T228] CR2: 0000556e8abf547c CR3: 000000000a460002 CR4: 0000000000772ef0
[  165.660379][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  165.660703][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  165.661020][  T228] PKRU: 55555554
[  165.661183][  T228] Call Trace:
[  165.661336][  T228]  <TASK>
[ 165.661443][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 165.661685][ T228] ? __warn (kernel/panic.c:748) 
[ 165.661849][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 165.662059][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 165.662272][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 165.662429][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 165.662656][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 165.662882][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 165.663105][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 165.663414][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 165.663689][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 165.663907][ T228] register_netdevice (net/core/dev.c:11003) 
[ 165.664117][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 165.664332][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 165.664555][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 165.664844][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 165.665123][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 165.665389][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 165.665596][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 165.665822][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 165.666089][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 165.666292][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 165.666495][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 165.666723][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 165.666933][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 165.667101][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 165.667313][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 165.667524][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 165.667748][ T228] ksys_write (fs/read_write.c:731) 
[ 165.667906][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 165.668140][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 165.668367][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  165.668636][  T228] RIP: 0033:0x7fc16425eb77
[ 165.668851][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  165.669576][  T228] RSP: 002b:00007fff9357c208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  165.669901][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc16425eb77
[  165.670267][  T228] RDX: 0000000000000002 RSI: 0000556e8adde130 RDI: 0000000000000001
[  165.670606][  T228] RBP: 0000556e8adde130 R08: 0000000000000000 R09: 00007fc1642d14e0
[  165.670910][  T228] R10: 00007fc1642d13e0 R11: 0000000000000246 R12: 0000000000000002
[  165.671251][  T228] R13: 00007fc16431a760 R14: 0000000000000002 R15: 00007fc1643159c0
| [  167.322945][  T228] ------------[ cut here ]------------
| [ 167.323359][ T228] WARNING: CPU: 3 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  167.323995][  T228] Modules linked in: netdevsim
| [  167.324934][  T228] Tainted: [W]=WARN
[  167.325162][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 167.325548][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 167.325955][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  167.327183][  T228] RSP: 0018:ffffc90000a77910 EFLAGS: 00010246
[  167.327656][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  167.328187][  T228] RDX: 0000000000000000 RSI: ffff88800d63ac98 RDI: ffff88800905ade8
[  167.329708][  T228] RBP: ffffffffa0523440 R08: 0000000000000000 R09: fffffbfff3c7d83c
[  167.330235][  T228] R10: ffffffff9e3ec1e7 R11: ffff88800905a300 R12: 0000000000000000
[  167.330735][  T228] R13: ffff88800d63a128 R14: ffff88800d63a008 R15: ffff88800d63a000
[  167.331239][  T228] FS:  00007fc16411d740(0000) GS:ffff88802f580000(0000) knlGS:0000000000000000
[  167.331818][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  167.332223][  T228] CR2: 0000556e8ac27018 CR3: 000000000a460002 CR4: 0000000000772ef0
[  167.332729][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  167.333301][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  167.333800][  T228] PKRU: 55555554
[  167.334046][  T228] Call Trace:
[  167.334292][  T228]  <TASK>
[ 167.334466][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 167.334803][ T228] ? __warn (kernel/panic.c:748) 
[ 167.335064][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 167.335405][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 167.335807][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 167.336055][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 167.336379][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 167.336749][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 167.337088][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 167.337501][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 167.337862][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 167.338189][ T228] register_netdevice (net/core/dev.c:11003) 
[ 167.338521][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 167.338992][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 167.339360][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 167.339809][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 167.340289][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 167.340822][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 167.341159][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 167.341497][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 167.341928][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 167.342242][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 167.342561][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 167.342909][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 167.343246][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 167.343520][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 167.343923][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 167.344271][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 167.344609][ T228] ksys_write (fs/read_write.c:731) 
[ 167.344924][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 167.345279][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 167.345653][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  167.346055][  T228] RIP: 0033:0x7fc16425eb77
[ 167.346395][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  167.347549][  T228] RSP: 002b:00007fff9357c208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  167.348054][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc16425eb77
[  167.348539][  T228] RDX: 0000000000000002 RSI: 0000556e8adde130 RDI: 0000000000000001
[  167.349035][  T228] RBP: 0000556e8adde130 R08: 0000000000000000 R09: 00007fc1642d14e0
[  167.349502][  T228] R10: 00007fc1642d13e0 R11: 0000000000000246 R12: 0000000000000002
[  167.349999][  T228] R13: 00007fc16431a760 R14: 0000000000000002 R15: 00007fc1643159c0
| [  168.979114][  T228] ------------[ cut here ]------------
| [ 168.979467][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  168.980010][  T228] Modules linked in: netdevsim
| [  168.980805][  T228] Tainted: [W]=WARN
[  168.981023][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 168.981329][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 168.981667][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  168.982510][  T228] RSP: 0018:ffffc90000a77910 EFLAGS: 00010246
[  168.982860][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  168.983261][  T228] RDX: 0000000000000000 RSI: ffff88800f22ac98 RDI: ffff88800905ade8
[  168.983664][  T228] RBP: ffffffffa0523440 R08: 0000000000000000 R09: fffffbfff3c7d83c
[  168.984063][  T228] R10: ffffffff9e3ec1e7 R11: ffff88800905a300 R12: 0000000000000000
[  168.984452][  T228] R13: ffff88800f22a128 R14: ffff88800f22a008 R15: ffff88800f22a000
[  168.984890][  T228] FS:  00007fc16411d740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  168.985331][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  168.985644][  T228] CR2: 0000556e8ac1a5e8 CR3: 000000000a460006 CR4: 0000000000772ef0
[  168.985965][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  168.986337][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  168.986747][  T228] PKRU: 55555554
[  168.986913][  T228] Call Trace:
[  168.987071][  T228]  <TASK>
[ 168.987185][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 168.987393][ T228] ? __warn (kernel/panic.c:748) 
[ 168.987570][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 168.987870][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 168.988096][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 168.988273][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 168.988579][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 168.988946][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 168.989285][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 168.989744][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 168.990109][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 168.990404][ T228] register_netdevice (net/core/dev.c:11003) 
[ 168.990758][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 168.991074][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 168.991377][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 168.991676][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 168.991962][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 168.992246][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 168.992476][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 168.992749][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 168.993100][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 168.993359][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 168.993660][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 168.993943][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 168.994219][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 168.994444][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 168.994734][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 168.994993][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 168.995226][ T228] ksys_write (fs/read_write.c:731) 
[ 168.995408][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 168.995707][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 168.995990][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  168.996328][  T228] RIP: 0033:0x7fc16425eb77
[ 168.996672][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  168.997441][  T228] RSP: 002b:00007fff9357c208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  168.997916][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc16425eb77
[  168.998245][  T228] RDX: 0000000000000002 RSI: 0000556e8adde130 RDI: 0000000000000001
[  168.998577][  T228] RBP: 0000556e8adde130 R08: 0000000000000000 R09: 00007fc1642d14e0
[  168.998915][  T228] R10: 00007fc1642d13e0 R11: 0000000000000246 R12: 0000000000000002
[  168.999233][  T228] R13: 00007fc16431a760 R14: 0000000000000002 R15: 00007fc1643159c0
| [  170.561328][  T228] ------------[ cut here ]------------
| [ 170.561722][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  170.562192][  T228] Modules linked in: netdevsim
| [  170.562882][  T228] Tainted: [W]=WARN
[  170.563057][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 170.563325][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 170.563633][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  170.564372][  T228] RSP: 0018:ffffc90000a77910 EFLAGS: 00010246
[  170.564728][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  170.565062][  T228] RDX: 0000000000000000 RSI: ffff88800a5eac98 RDI: ffff88800905ade8
[  170.565398][  T228] RBP: ffffffffa0523440 R08: 0000000000000000 R09: fffffbfff3c7d83c
[  170.565915][  T228] R10: ffffffff9e3ec1e7 R11: ffff88800905a300 R12: 0000000000000000
[  170.566268][  T228] R13: ffff88800a5ea128 R14: ffff88800a5ea008 R15: ffff88800a5ea000
[  170.566657][  T228] FS:  00007fc16411d740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  170.567025][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  170.567394][  T228] CR2: 0000556e8ac27018 CR3: 000000000a460006 CR4: 0000000000772ef0
[  170.567728][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  170.568046][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  170.568372][  T228] PKRU: 55555554
[  170.568591][  T228] Call Trace:
[  170.568854][  T228]  <TASK>
[ 170.569030][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 170.569338][ T228] ? __warn (kernel/panic.c:748) 
[ 170.569528][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 170.569762][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 170.569991][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 170.570166][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 170.570397][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 170.570666][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 170.570894][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 170.571195][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 170.571420][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 170.571687][ T228] register_netdevice (net/core/dev.c:11003) 
[ 170.571919][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 170.572167][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 170.572412][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 170.572728][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 170.573021][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 170.573352][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 170.573691][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 170.574052][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 170.574481][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 170.574810][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 170.575167][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 170.575519][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 170.575940][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 170.576161][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 170.576408][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 170.576697][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 170.576926][ T228] ksys_write (fs/read_write.c:731) 
[ 170.577101][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 170.577328][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 170.577633][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  170.577938][  T228] RIP: 0033:0x7fc16425eb77
[ 170.578222][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  170.579172][  T228] RSP: 002b:00007fff9357c208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  170.579560][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc16425eb77
[  170.579934][  T228] RDX: 0000000000000002 RSI: 0000556e8adde130 RDI: 0000000000000001
[  170.580269][  T228] RBP: 0000556e8adde130 R08: 0000000000000000 R09: 00007fc1642d14e0
[  170.580624][  T228] R10: 00007fc1642d13e0 R11: 0000000000000246 R12: 0000000000000002
[  170.580979][  T228] R13: 00007fc16431a760 R14: 0000000000000002 R15: 00007fc1643159c0
| [  172.219873][  T228] ------------[ cut here ]------------
| [ 172.220312][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  172.221020][  T228] Modules linked in: netdevsim
| [  172.222065][  T228] Tainted: [W]=WARN
[  172.222346][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 172.222791][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 172.223224][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  172.224364][  T228] RSP: 0018:ffffc90000a77910 EFLAGS: 00010246
[  172.224817][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  172.225301][  T228] RDX: 0000000000000000 RSI: ffff88800d522c98 RDI: ffff88800905ade8
[  172.225815][  T228] RBP: ffffffffa0523440 R08: 0000000000000000 R09: fffffbfff3c7d83c
[  172.226286][  T228] R10: ffffffff9e3ec1e7 R11: ffff88800905a300 R12: 0000000000000000
[  172.226832][  T228] R13: ffff88800d522128 R14: ffff88800d522008 R15: ffff88800d522000
[  172.227356][  T228] FS:  00007fc16411d740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  172.227953][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  172.228378][  T228] CR2: 0000556e8abf547c CR3: 000000000a460006 CR4: 0000000000772ef0
[  172.228895][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  172.229382][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  172.229903][  T228] PKRU: 55555554
[  172.230170][  T228] Call Trace:
[  172.230448][  T228]  <TASK>
[ 172.230662][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 172.231036][ T228] ? __warn (kernel/panic.c:748) 
[ 172.231300][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 172.231658][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 172.232014][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 172.232276][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 172.232635][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 172.232990][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 172.233345][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 172.233779][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 172.234136][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 172.234477][ T228] register_netdevice (net/core/dev.c:11003) 
[ 172.234842][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 172.235193][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 172.235550][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 172.235997][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 172.236447][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 172.236893][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 172.237229][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 172.237578][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 172.238022][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 172.238350][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 172.238705][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 172.239045][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 172.239454][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 172.239755][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 172.240117][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 172.240483][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 172.240872][ T228] ksys_write (fs/read_write.c:731) 
[ 172.241169][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 172.241559][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 172.241937][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  172.242366][  T228] RIP: 0033:0x7fc16425eb77
[ 172.242757][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  172.243906][  T228] RSP: 002b:00007fff9357c208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  172.244404][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc16425eb77
[  172.244920][  T228] RDX: 0000000000000002 RSI: 0000556e8adde130 RDI: 0000000000000001
[  172.245412][  T228] RBP: 0000556e8adde130 R08: 0000000000000000 R09: 00007fc1642d14e0
[  172.245928][  T228] R10: 00007fc1642d13e0 R11: 0000000000000246 R12: 0000000000000002
[  172.246404][  T228] R13: 00007fc16431a760 R14: 0000000000000002 R15: 00007fc1643159c0
| [  173.885393][  T228] ------------[ cut here ]------------
| [ 173.885740][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  173.886207][  T228] Modules linked in: netdevsim
| [  173.886899][  T228] Tainted: [W]=WARN
[  173.887072][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 173.887334][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 173.887593][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  173.888328][  T228] RSP: 0018:ffffc90000a77910 EFLAGS: 00010246
[  173.888594][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  173.888917][  T228] RDX: 0000000000000000 RSI: ffff88800f222c98 RDI: ffff88800905ade8
[  173.889237][  T228] RBP: ffffffffa0523440 R08: 0000000000000000 R09: fffffbfff3c7d83c
[  173.889527][  T228] R10: ffffffff9e3ec1e7 R11: ffff88800905a300 R12: 0000000000000000
[  173.889826][  T228] R13: ffff88800f222128 R14: ffff88800f222008 R15: ffff88800f222000
[  173.890112][  T228] FS:  00007fc16411d740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  173.890441][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  173.890698][  T228] CR2: 0000556e8adb4de8 CR3: 000000000a460004 CR4: 0000000000772ef0
[  173.891005][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  173.891325][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  173.891609][  T228] PKRU: 55555554
[  173.891778][  T228] Call Trace:
[  173.891930][  T228]  <TASK>
[ 173.892044][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 173.892280][ T228] ? __warn (kernel/panic.c:748) 
[ 173.892438][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 173.892665][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 173.892878][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 173.893031][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 173.893236][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 173.893446][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 173.893668][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 173.893913][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 173.894125][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 173.894332][ T228] register_netdevice (net/core/dev.c:11003) 
[ 173.894538][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 173.895317][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 173.895556][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 173.895850][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 173.896178][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 173.896447][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 173.896702][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 173.896945][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 173.897215][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 173.897418][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 173.897657][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 173.897882][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 173.898095][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 173.898268][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 173.898486][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 173.898802][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 173.899043][ T228] ksys_write (fs/read_write.c:731) 
[ 173.899252][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 173.899497][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 173.899744][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  173.900004][  T228] RIP: 0033:0x7fc16425eb77
[ 173.900299][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  173.901093][  T228] RSP: 002b:00007fff9357c208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  173.901439][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc16425eb77
[  173.901758][  T228] RDX: 0000000000000002 RSI: 0000556e8adde130 RDI: 0000000000000001
[  173.902064][  T228] RBP: 0000556e8adde130 R08: 0000000000000000 R09: 00007fc1642d14e0
[  173.902387][  T228] R10: 00007fc1642d13e0 R11: 0000000000000246 R12: 0000000000000002
[  173.902720][  T228] R13: 00007fc16431a760 R14: 0000000000000002 R15: 00007fc1643159c0
| [  175.544397][  T228] ------------[ cut here ]------------
| [ 175.544720][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  175.545213][  T228] Modules linked in: netdevsim
| [  175.545927][  T228] Tainted: [W]=WARN
[  175.546136][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 175.546405][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 175.546756][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  175.547568][  T228] RSP: 0018:ffffc90000a77910 EFLAGS: 00010246
[  175.547924][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  175.548298][  T228] RDX: 0000000000000000 RSI: ffff888005152c98 RDI: ffff88800905ade8
[  175.548651][  T228] RBP: ffffffffa0523440 R08: 0000000000000000 R09: fffffbfff3c7d83c
[  175.549026][  T228] R10: ffffffff9e3ec1e7 R11: ffff88800905a300 R12: 0000000000000000
[  175.549433][  T228] R13: ffff888005152128 R14: ffff888005152008 R15: ffff888005152000
[  175.549849][  T228] FS:  00007fc16411d740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  175.550326][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  175.550749][  T228] CR2: 0000556e8abf547c CR3: 000000000a460004 CR4: 0000000000772ef0
[  175.551289][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  175.551827][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  175.552349][  T228] PKRU: 55555554
[  175.552655][  T228] Call Trace:
[  175.552939][  T228]  <TASK>
[ 175.553155][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 175.553539][ T228] ? __warn (kernel/panic.c:748) 
[ 175.553854][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 175.554233][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 175.554639][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 175.554926][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 175.555277][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 175.555693][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 175.556069][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 175.556513][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 175.556900][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 175.557261][ T228] register_netdevice (net/core/dev.c:11003) 
[ 175.557641][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 175.558004][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 175.558288][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 175.558578][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 175.558886][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 175.559161][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 175.559447][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 175.559735][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 175.560010][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 175.560303][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 175.560592][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 175.560870][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 175.561159][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 175.561393][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 175.561694][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 175.561936][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 175.562224][ T228] ksys_write (fs/read_write.c:731) 
[ 175.562403][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 175.562667][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 175.563324][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  175.563731][  T228] RIP: 0033:0x7fc16425eb77
[ 175.563978][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  175.564989][  T228] RSP: 002b:00007fff9357c208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  175.565310][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc16425eb77
[  175.565656][  T228] RDX: 0000000000000002 RSI: 0000556e8adde130 RDI: 0000000000000001
[  175.565971][  T228] RBP: 0000556e8adde130 R08: 0000000000000000 R09: 00007fc1642d14e0
[  175.566361][  T228] R10: 00007fc1642d13e0 R11: 0000000000000246 R12: 0000000000000002
[  175.566707][  T228] R13: 00007fc16431a760 R14: 0000000000000002 R15: 00007fc1643159c0
| [  177.148833][  T228] ------------[ cut here ]------------
| [ 177.149180][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  177.149641][  T228] Modules linked in: netdevsim
| [  177.150324][  T228] Tainted: [W]=WARN
[  177.150496][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 177.150900][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 177.151216][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  177.152071][  T228] RSP: 0018:ffffc90000a77910 EFLAGS: 00010246
[  177.152358][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  177.152701][  T228] RDX: 0000000000000000 RSI: ffff88800d63ac98 RDI: ffff88800905ade8
[  177.153009][  T228] RBP: ffffffffa0523440 R08: 0000000000000000 R09: fffffbfff3c7d83c
[  177.153308][  T228] R10: ffffffff9e3ec1e7 R11: ffff88800905a300 R12: 0000000000000000
[  177.153604][  T228] R13: ffff88800d63a128 R14: ffff88800d63a008 R15: ffff88800d63a000
[  177.153937][  T228] FS:  00007fc16411d740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  177.154288][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  177.154558][  T228] CR2: 0000556e8abf547c CR3: 000000000a460006 CR4: 0000000000772ef0
[  177.154868][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  177.155163][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  177.155480][  T228] PKRU: 55555554
[  177.155652][  T228] Call Trace:
[  177.155812][  T228]  <TASK>
[ 177.155924][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 177.156137][ T228] ? __warn (kernel/panic.c:748) 
[ 177.156304][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 177.156527][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 177.156779][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 177.156943][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 177.157153][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 177.157384][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 177.157624][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 177.157913][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 177.158141][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 177.158384][ T228] register_netdevice (net/core/dev.c:11003) 
[ 177.158624][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 177.158869][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 177.159111][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 177.159387][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 177.159711][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 177.160001][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 177.160238][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 177.160479][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 177.160781][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 177.161040][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 177.161276][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 177.161511][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 177.161783][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 177.161974][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 177.162204][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 177.162451][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 177.162704][ T228] ksys_write (fs/read_write.c:731) 
[ 177.162887][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 177.163119][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 177.163351][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  177.163636][  T228] RIP: 0033:0x7fc16425eb77
[ 177.163864][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  177.164538][  T228] RSP: 002b:00007fff9357c208 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  177.164877][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc16425eb77
[  177.165206][  T228] RDX: 0000000000000002 RSI: 0000556e8adde130 RDI: 0000000000000001
[  177.165502][  T228] RBP: 0000556e8adde130 R08: 0000000000000000 R09: 00007fc1642d14e0
[  177.165833][  T228] R10: 00007fc1642d13e0 R11: 0000000000000246 R12: 0000000000000002
[  177.166135][  T228] R13: 00007fc16431a760 R14: 0000000000000002 R15: 00007fc1643159c0
| [  182.004052][  T228] ------------[ cut here ]------------
| [ 182.004397][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  182.004882][  T228] Modules linked in: netdevsim
| [  182.005494][  T228] Tainted: [W]=WARN
[  182.005665][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 182.005934][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 182.006195][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  182.007055][  T228] RSP: 0018:ffffc90000a77910 EFLAGS: 00010246
[  182.007317][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  182.007702][  T228] RDX: 0000000000000000 RSI: ffff88800a5eac98 RDI: ffff88800905ade8
[  182.008010][  T228] RBP: ffffffffa0523440 R08: 0000000000000000 R09: fffffbfff3c7d83c
[  182.008305][  T228] R10: ffffffff9e3ec1e7 R11: ffff88800905a300 R12: 0000000000000000
[  182.008609][  T228] R13: ffff88800a5ea128 R14: ffff88800a5ea008 R15: ffff88800a5ea000
[  182.008958][  T228] FS:  00007fc16411d740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  182.009301][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  182.009550][  T228] CR2: 000055789e75a898 CR3: 000000000a460001 CR4: 0000000000772ef0
[  182.009883][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  182.010174][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  182.010470][  T228] PKRU: 55555554
[  182.010639][  T228] Call Trace:
[  182.010814][  T228]  <TASK>
[ 182.010947][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 182.011161][ T228] ? __warn (kernel/panic.c:748) 
[ 182.011327][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 182.011539][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 182.011791][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 182.011953][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 182.012235][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 182.012474][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 182.012748][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 182.013013][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 182.013236][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 182.013449][ T228] register_netdevice (net/core/dev.c:11003) 
[ 182.013675][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 182.013928][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 182.014154][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 182.014420][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 182.014735][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 182.015004][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 182.015215][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 182.015433][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 182.015746][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 182.015956][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 182.016168][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 182.016428][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 182.016663][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 182.016862][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 182.017112][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 182.017385][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 182.017600][ T228] ksys_write (fs/read_write.c:731) 
[ 182.017814][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 182.018033][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 182.018253][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  182.018575][  T228] RIP: 0033:0x7fc16425eb77
[ 182.018869][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  182.019636][  T228] RSP: 002b:00007fff9357b968 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  182.020006][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc16425eb77
[  182.020305][  T228] RDX: 0000000000000002 RSI: 0000556e8adde130 RDI: 0000000000000001
[  182.020607][  T228] RBP: 0000556e8adde130 R08: 0000000000000000 R09: 00007fc1642d14e0
[  182.020937][  T228] R10: 00007fc1642d13e0 R11: 0000000000000246 R12: 0000000000000002
[  182.021230][  T228] R13: 00007fc16431a760 R14: 0000000000000002 R15: 00007fc1643159c0
| [  183.751268][  T228] ------------[ cut here ]------------
| [ 183.751610][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  183.752112][  T228] Modules linked in: netdevsim
| [  183.752803][  T228] Tainted: [W]=WARN
[  183.752976][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 183.753260][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 183.753549][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  183.754476][  T228] RSP: 0018:ffffc90000a77910 EFLAGS: 00010246
[  183.754801][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  183.755161][  T228] RDX: 0000000000000000 RSI: ffff88800f22ac98 RDI: ffff88800905ade8
[  183.755510][  T228] RBP: ffffffffa0523440 R08: 0000000000000000 R09: fffffbfff3c7d83c
[  183.755931][  T228] R10: ffffffff9e3ec1e7 R11: ffff88800905a300 R12: 0000000000000000
[  183.756289][  T228] R13: ffff88800f22a128 R14: ffff88800f22a008 R15: ffff88800f22a000
[  183.756640][  T228] FS:  00007fc16411d740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[  183.757045][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  183.757332][  T228] CR2: 0000556e8ac79408 CR3: 000000000a460006 CR4: 0000000000772ef0
[  183.757678][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  183.758020][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  183.758370][  T228] PKRU: 55555554
[  183.758547][  T228] Call Trace:
[  183.758730][  T228]  <TASK>
[ 183.758851][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 183.759085][ T228] ? __warn (kernel/panic.c:748) 
[ 183.759263][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 183.759491][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 183.759738][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 183.759921][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 183.760153][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 183.760395][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 183.760643][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 183.760951][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 183.761170][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 183.761387][ T228] register_netdevice (net/core/dev.c:11003) 
[ 183.761608][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 183.761842][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 183.762068][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 183.762337][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 183.762648][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 183.762924][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 183.763154][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 183.763372][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 183.763663][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 183.763872][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 183.764095][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 183.764312][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 183.764536][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 183.764722][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 183.764935][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 183.765174][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 183.765395][ T228] ksys_write (fs/read_write.c:731) 
[ 183.765550][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 183.765780][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 183.765994][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  183.766247][  T228] RIP: 0033:0x7fc16425eb77
[ 183.766459][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  183.767186][  T228] RSP: 002b:00007fff9357b968 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  183.767505][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc16425eb77
[  183.767819][  T228] RDX: 0000000000000002 RSI: 0000556e8adde130 RDI: 0000000000000001
[  183.768156][  T228] RBP: 0000556e8adde130 R08: 0000000000000000 R09: 00007fc1642d14e0
[  183.768457][  T228] R10: 00007fc1642d13e0 R11: 0000000000000246 R12: 0000000000000002
[  183.768777][  T228] R13: 00007fc16431a760 R14: 0000000000000002 R15: 00007fc1643159c0
| [  185.489499][  T228] ------------[ cut here ]------------
| [ 185.489891][ T228] WARNING: CPU: 1 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  185.490335][  T228] Modules linked in: netdevsim
| [  185.491020][  T228] Tainted: [W]=WARN
[  185.491193][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 185.491466][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 185.491754][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  185.492495][  T228] RSP: 0018:ffffc90000a77910 EFLAGS: 00010246
[  185.492850][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  185.493237][  T228] RDX: 0000000000000000 RSI: ffff88800d522c98 RDI: ffff88800905ade8
[  185.493695][  T228] RBP: ffffffffa0523440 R08: 0000000000000000 R09: fffffbfff3c7d83c
[  185.494128][  T228] R10: ffffffff9e3ec1e7 R11: ffff88800905a300 R12: 0000000000000000
[  185.494635][  T228] R13: ffff88800d522128 R14: ffff88800d522008 R15: ffff88800d522000
[  185.495107][  T228] FS:  00007fc16411d740(0000) GS:ffff88802f480000(0000) knlGS:0000000000000000
[  185.495688][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  185.496099][  T228] CR2: 0000556e8ac83088 CR3: 000000000a460004 CR4: 0000000000772ef0
[  185.496587][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  185.497094][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  185.497580][  T228] PKRU: 55555554
[  185.497854][  T228] Call Trace:
[  185.498473][  T228]  <TASK>
[ 185.498677][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 185.499017][ T228] ? __warn (kernel/panic.c:748) 
[ 185.499274][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 185.499630][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 185.499970][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 185.500211][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 185.500528][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 185.500912][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 185.501158][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 185.501431][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 185.501658][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 185.501864][ T228] register_netdevice (net/core/dev.c:11003) 
[ 185.502083][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 185.502293][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 185.502511][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 185.502787][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 185.503068][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 185.503337][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 185.503534][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 185.503752][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 185.504010][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 185.504211][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 185.504401][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 185.504597][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 185.504807][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 185.504969][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 185.505168][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 185.505370][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 185.505566][ T228] ksys_write (fs/read_write.c:731) 
[ 185.505735][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 185.505940][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 185.506140][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  185.506382][  T228] RIP: 0033:0x7fc16425eb77
[ 185.506585][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  185.507269][  T228] RSP: 002b:00007fff9357b968 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  185.507569][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc16425eb77
[  185.507862][  T228] RDX: 0000000000000002 RSI: 0000556e8adde130 RDI: 0000000000000001
[  185.508157][  T228] RBP: 0000556e8adde130 R08: 0000000000000000 R09: 00007fc1642d14e0
[  185.508436][  T228] R10: 00007fc1642d13e0 R11: 0000000000000246 R12: 0000000000000002
[  185.508740][  T228] R13: 00007fc16431a760 R14: 0000000000000002 R15: 00007fc1643159c0
| [  187.198489][  T228] ------------[ cut here ]------------
| [ 187.198902][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  187.199301][  T228] Modules linked in: netdevsim
| [  187.200050][  T228] Tainted: [W]=WARN
[  187.200223][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 187.200482][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 187.200808][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  187.201489][  T228] RSP: 0018:ffffc90000a77910 EFLAGS: 00010246
[  187.201973][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  187.202295][  T228] RDX: 0000000000000000 RSI: ffff888005152c98 RDI: ffff88800905ade8
[  187.202671][  T228] RBP: ffffffffa0523440 R08: 0000000000000000 R09: fffffbfff3c7d83c
[  187.202985][  T228] R10: ffffffff9e3ec1e7 R11: ffff88800905a300 R12: 0000000000000000
[  187.203350][  T228] R13: ffff888005152128 R14: ffff888005152008 R15: ffff888005152000
[  187.203695][  T228] FS:  00007fc16411d740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  187.204044][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  187.204291][  T228] CR2: 00007fc164216890 CR3: 000000000a460001 CR4: 0000000000772ef0
[  187.204802][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  187.205192][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  187.205491][  T228] PKRU: 55555554
[  187.205687][  T228] Call Trace:
[  187.205847][  T228]  <TASK>
[ 187.205959][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 187.206217][ T228] ? __warn (kernel/panic.c:748) 
[ 187.206390][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 187.206598][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 187.206948][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 187.207112][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 187.207342][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 187.207565][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 187.207860][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 187.208115][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 187.208399][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 187.208644][ T228] register_netdevice (net/core/dev.c:11003) 
[ 187.208871][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 187.209094][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 187.209313][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 187.209573][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 187.209902][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 187.210162][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 187.210369][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 187.210598][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 187.210899][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 187.211105][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 187.211307][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 187.211566][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 187.211827][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 187.212003][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 187.212291][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 187.212553][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 187.212870][ T228] ksys_write (fs/read_write.c:731) 
[ 187.213035][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 187.213250][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 187.213459][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  187.213781][  T228] RIP: 0033:0x7fc16425eb77
[ 187.214067][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  187.214919][  T228] RSP: 002b:00007fff9357b968 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  187.215267][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc16425eb77
[  187.215652][  T228] RDX: 0000000000000002 RSI: 0000556e8adde130 RDI: 0000000000000001
[  187.216022][  T228] RBP: 0000556e8adde130 R08: 0000000000000000 R09: 00007fc1642d14e0
[  187.216366][  T228] R10: 00007fc1642d13e0 R11: 0000000000000246 R12: 0000000000000002
[  187.216800][  T228] R13: 00007fc16431a760 R14: 0000000000000002 R15: 00007fc1643159c0
| [  188.883275][  T228] ------------[ cut here ]------------
| [ 188.883698][ T228] WARNING: CPU: 0 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  188.884214][  T228] Modules linked in: netdevsim
| [  188.886136][  T228] Tainted: [W]=WARN
[  188.886310][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 188.886582][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 188.886845][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  188.887514][  T228] RSP: 0018:ffffc90000a77910 EFLAGS: 00010246
[  188.887792][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  188.888076][  T228] RDX: 0000000000000000 RSI: ffff88800f222c98 RDI: ffff88800905ade8
[  188.888376][  T228] RBP: ffffffffa0523440 R08: 0000000000000000 R09: fffffbfff3c7d83c
[  188.888715][  T228] R10: ffffffff9e3ec1e7 R11: ffff88800905a300 R12: 0000000000000000
[  188.889003][  T228] R13: ffff88800f222128 R14: ffff88800f222008 R15: ffff88800f222000
[  188.889289][  T228] FS:  00007fc16411d740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[  188.889660][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  188.889901][  T228] CR2: 0000556e8adc0258 CR3: 000000000a460006 CR4: 0000000000772ef0
[  188.890186][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  188.890491][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  188.890835][  T228] PKRU: 55555554
[  188.890993][  T228] Call Trace:
[  188.891133][  T228]  <TASK>
[ 188.891232][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 188.891425][ T228] ? __warn (kernel/panic.c:748) 
[ 188.891574][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 188.891792][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 188.891991][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 188.892134][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 188.892326][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 188.892532][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 188.892773][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 188.893011][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 188.893209][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 188.893408][ T228] register_netdevice (net/core/dev.c:11003) 
[ 188.893640][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 188.893845][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 188.894049][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 188.894294][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 188.894554][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 188.894815][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 188.895008][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 188.895211][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 188.895464][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 188.895666][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 188.895855][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 188.896048][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 188.896254][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 188.896402][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 188.896592][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 188.896802][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 188.897000][ T228] ksys_write (fs/read_write.c:731) 
[ 188.897152][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 188.897372][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 188.897567][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  188.897819][  T228] RIP: 0033:0x7fc16425eb77
[ 188.898015][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  188.898696][  T228] RSP: 002b:00007fff9357b968 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  188.898982][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc16425eb77
[  188.899260][  T228] RDX: 0000000000000002 RSI: 0000556e8adde130 RDI: 0000000000000001
[  188.899545][  T228] RBP: 0000556e8adde130 R08: 0000000000000000 R09: 00007fc1642d14e0
[  188.899842][  T228] R10: 00007fc1642d13e0 R11: 0000000000000246 R12: 0000000000000002
[  188.900121][  T228] R13: 00007fc16431a760 R14: 0000000000000002 R15: 00007fc1643159c0
| [  190.589471][  T228] ------------[ cut here ]------------
| [ 190.589872][ T228] WARNING: CPU: 1 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  190.590334][  T228] Modules linked in: netdevsim
| [  190.591015][  T228] Tainted: [W]=WARN
[  190.591166][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 190.591412][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 190.591668][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  190.592321][  T228] RSP: 0018:ffffc90000a77910 EFLAGS: 00010246
[  190.592705][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  190.593047][  T228] RDX: 0000000000000000 RSI: ffff88800d63ac98 RDI: ffff88800905ade8
[  190.593326][  T228] RBP: ffffffffa0523440 R08: 0000000000000000 R09: fffffbfff3c7d83c
[  190.593626][  T228] R10: ffffffff9e3ec1e7 R11: ffff88800905a300 R12: 0000000000000000
[  190.593972][  T228] R13: ffff88800d63a128 R14: ffff88800d63a008 R15: ffff88800d63a000
[  190.594257][  T228] FS:  00007fc16411d740(0000) GS:ffff88802f480000(0000) knlGS:0000000000000000
[  190.594598][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  190.594978][  T228] CR2: 00007f4742beaa00 CR3: 000000000a460001 CR4: 0000000000772ef0
[  190.595261][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  190.595552][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  190.595842][  T228] PKRU: 55555554
[  190.595988][  T228] Call Trace:
[  190.596132][  T228]  <TASK>
[ 190.596233][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 190.596433][ T228] ? __warn (kernel/panic.c:748) 
[ 190.596585][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 190.596784][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 190.596985][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 190.597135][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 190.597326][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 190.597537][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 190.597749][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 190.597994][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 190.598188][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 190.598388][ T228] register_netdevice (net/core/dev.c:11003) 
[ 190.598580][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 190.598787][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 190.599042][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 190.599328][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 190.599600][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 190.599860][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 190.600050][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 190.600248][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 190.600520][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 190.600728][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 190.600933][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 190.601125][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 190.601342][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 190.601587][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 190.601796][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 190.602011][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 190.602211][ T228] ksys_write (fs/read_write.c:731) 
[ 190.602364][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 190.602574][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 190.602778][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  190.603013][  T228] RIP: 0033:0x7fc16425eb77
[ 190.603209][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  190.603890][  T228] RSP: 002b:00007fff9357b968 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  190.604172][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc16425eb77
[  190.604450][  T228] RDX: 0000000000000002 RSI: 0000556e8adde130 RDI: 0000000000000001
[  190.604754][  T228] RBP: 0000556e8adde130 R08: 0000000000000000 R09: 00007fc1642d14e0
[  190.605037][  T228] R10: 00007fc1642d13e0 R11: 0000000000000246 R12: 0000000000000002
[  190.605317][  T228] R13: 00007fc16431a760 R14: 0000000000000002 R15: 00007fc1643159c0
| [  192.238383][  T228] ------------[ cut here ]------------
| [ 192.238948][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  192.239405][  T228] Modules linked in: netdevsim
| [  192.240131][  T228] Tainted: [W]=WARN
[  192.240306][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 192.240578][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 192.240916][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  192.241661][  T228] RSP: 0018:ffffc90000a77910 EFLAGS: 00010246
[  192.241912][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  192.242222][  T228] RDX: 0000000000000000 RSI: ffff88800a5eac98 RDI: ffff88800905ade8
[  192.242546][  T228] RBP: ffffffffa0523440 R08: 0000000000000000 R09: fffffbfff3c7d83c
[  192.242979][  T228] R10: ffffffff9e3ec1e7 R11: ffff88800905a300 R12: 0000000000000000
[  192.243351][  T228] R13: ffff88800a5ea128 R14: ffff88800a5ea008 R15: ffff88800a5ea000
[  192.243677][  T228] FS:  00007fc16411d740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  192.244038][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  192.244330][  T228] CR2: 00007fc164216890 CR3: 000000000a460006 CR4: 0000000000772ef0
[  192.244659][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  192.245165][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  192.245530][  T228] PKRU: 55555554
[  192.245714][  T228] Call Trace:
[  192.245932][  T228]  <TASK>
[ 192.246065][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 192.246361][ T228] ? __warn (kernel/panic.c:748) 
[ 192.246603][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 192.246903][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 192.247201][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 192.247478][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 192.247778][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 192.248045][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 192.248334][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 192.248668][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 192.248937][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 192.249199][ T228] register_netdevice (net/core/dev.c:11003) 
[ 192.249459][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 192.249722][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 192.250021][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 192.250363][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 192.250821][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 192.251259][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 192.251590][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 192.251966][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 192.252400][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 192.252747][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 192.253006][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 192.253297][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 192.253514][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 192.253721][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 192.253980][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 192.254251][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 192.254543][ T228] ksys_write (fs/read_write.c:731) 
[ 192.254729][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 192.255017][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 192.255252][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  192.255506][  T228] RIP: 0033:0x7fc16425eb77
[ 192.255729][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  192.256529][  T228] RSP: 002b:00007fff9357b968 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  192.256836][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc16425eb77
[  192.257173][  T228] RDX: 0000000000000002 RSI: 0000556e8adde130 RDI: 0000000000000001
[  192.257509][  T228] RBP: 0000556e8adde130 R08: 0000000000000000 R09: 00007fc1642d14e0
[  192.257873][  T228] R10: 00007fc1642d13e0 R11: 0000000000000246 R12: 0000000000000002
[  192.258192][  T228] R13: 00007fc16431a760 R14: 0000000000000002 R15: 00007fc1643159c0
| [  193.964929][  T228] ------------[ cut here ]------------
| [ 193.965302][ T228] WARNING: CPU: 3 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  193.965843][  T228] Modules linked in: netdevsim
| [  193.966649][  T228] Tainted: [W]=WARN
[  193.966866][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 193.967224][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 193.967673][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  193.968747][  T228] RSP: 0018:ffffc90000a77910 EFLAGS: 00010246
[  193.969049][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  193.969324][  T228] RDX: 0000000000000000 RSI: ffff88800f22ac98 RDI: ffff88800905ade8
[  193.969609][  T228] RBP: ffffffffa0523440 R08: 0000000000000000 R09: fffffbfff3c7d83c
[  193.969906][  T228] R10: ffffffff9e3ec1e7 R11: ffff88800905a300 R12: 0000000000000000
[  193.970185][  T228] R13: ffff88800f22a128 R14: ffff88800f22a008 R15: ffff88800f22a000
[  193.970460][  T228] FS:  00007fc16411d740(0000) GS:ffff88802f580000(0000) knlGS:0000000000000000
[  193.970822][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  193.971081][  T228] CR2: 0000556e8ac79408 CR3: 000000000a460004 CR4: 0000000000772ef0
[  193.971367][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  193.971874][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  193.972158][  T228] PKRU: 55555554
[  193.972302][  T228] Call Trace:
[  193.972445][  T228]  <TASK>
[ 193.972546][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 193.972759][ T228] ? __warn (kernel/panic.c:748) 
[ 193.972917][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 193.973110][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 193.973320][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 193.973483][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 193.973703][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 193.973904][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 193.974132][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 193.974393][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 193.974642][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 193.974850][ T228] register_netdevice (net/core/dev.c:11003) 
[ 193.975050][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 193.975253][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 193.975458][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 193.975804][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 193.976092][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 193.976391][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 193.976711][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 193.976942][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 193.977200][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 193.977404][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 193.977623][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 193.977817][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 193.978010][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 193.978164][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 193.978356][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 193.978605][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 193.978819][ T228] ksys_write (fs/read_write.c:731) 
[ 193.978964][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 193.979162][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 193.979357][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  193.979600][  T228] RIP: 0033:0x7fc16425eb77
[ 193.979805][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  193.980460][  T228] RSP: 002b:00007fff9357b968 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  193.980789][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc16425eb77
[  193.981090][  T228] RDX: 0000000000000002 RSI: 0000556e8adde130 RDI: 0000000000000001
[  193.981376][  T228] RBP: 0000556e8adde130 R08: 0000000000000000 R09: 00007fc1642d14e0
[  193.981726][  T228] R10: 00007fc1642d13e0 R11: 0000000000000246 R12: 0000000000000002
[  193.982004][  T228] R13: 00007fc16431a760 R14: 0000000000000002 R15: 00007fc1643159c0
| [  195.702919][  T228] ------------[ cut here ]------------
| [ 195.703560][ T228] WARNING: CPU: 2 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  195.704253][  T228] Modules linked in: netdevsim
| [  195.705273][  T228] Tainted: [W]=WARN
[  195.705546][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 195.705908][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 195.706295][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  195.707391][  T228] RSP: 0018:ffffc90000a77910 EFLAGS: 00010246
[  195.707855][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  195.708333][  T228] RDX: 0000000000000000 RSI: ffff88800d522c98 RDI: ffff88800905ade8
[  195.708884][  T228] RBP: ffffffffa0523440 R08: 0000000000000000 R09: fffffbfff3c7d83c
[  195.709374][  T228] R10: ffffffff9e3ec1e7 R11: ffff88800905a300 R12: 0000000000000000
[  195.709891][  T228] R13: ffff88800d522128 R14: ffff88800d522008 R15: ffff88800d522000
[  195.710459][  T228] FS:  00007fc16411d740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  195.711133][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  195.711574][  T228] CR2: 0000556e8addcfe8 CR3: 000000000a460005 CR4: 0000000000772ef0
[  195.712509][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  195.713005][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  195.713494][  T228] PKRU: 55555554
[  195.713782][  T228] Call Trace:
[  195.714043][  T228]  <TASK>
[ 195.714228][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 195.714541][ T228] ? __warn (kernel/panic.c:748) 
[ 195.714833][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 195.715192][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 195.715539][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 195.715826][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 195.716235][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 195.716570][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 195.716955][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 195.717376][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 195.717782][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 195.718141][ T228] register_netdevice (net/core/dev.c:11003) 
[ 195.718498][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 195.718906][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 195.719288][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 195.719782][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 195.720270][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 195.720739][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 195.721102][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 195.721465][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 195.721939][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 195.722271][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 195.722645][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 195.723011][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 195.723368][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 195.723674][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 195.724018][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 195.724387][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 195.724777][ T228] ksys_write (fs/read_write.c:731) 
[ 195.725059][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 195.725415][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 195.725806][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  195.726226][  T228] RIP: 0033:0x7fc16425eb77
[ 195.726582][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  195.727752][  T228] RSP: 002b:00007fff9357b968 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  195.728281][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc16425eb77
[  195.728850][  T228] RDX: 0000000000000002 RSI: 0000556e8adde130 RDI: 0000000000000001
[  195.729368][  T228] RBP: 0000556e8adde130 R08: 0000000000000000 R09: 00007fc1642d14e0
[  195.729907][  T228] R10: 00007fc1642d13e0 R11: 0000000000000246 R12: 0000000000000002
[  195.730424][  T228] R13: 00007fc16431a760 R14: 0000000000000002 R15: 00007fc1643159c0
| [  197.527187][  T228] ------------[ cut here ]------------
| [ 197.527525][ T228] WARNING: CPU: 1 PID: 228 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  197.527966][  T228] Modules linked in: netdevsim
| [  197.528643][  T228] Tainted: [W]=WARN
[  197.528811][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 197.529081][ T228] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 197.529408][ T228] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  197.530561][  T228] RSP: 0018:ffffc90000a77910 EFLAGS: 00010246
[  197.531019][  T228] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  197.531410][  T228] RDX: 0000000000000000 RSI: ffff888005152c98 RDI: ffff88800905ade8
[  197.531790][  T228] RBP: ffffffffa0523440 R08: 0000000000000000 R09: fffffbfff3c7d83c
[  197.532120][  T228] R10: ffffffff9e3ec1e7 R11: ffff88800905a300 R12: 0000000000000000
[  197.532452][  T228] R13: ffff888005152128 R14: ffff888005152008 R15: ffff888005152000
[  197.532794][  T228] FS:  00007fc16411d740(0000) GS:ffff88802f480000(0000) knlGS:0000000000000000
[  197.533173][  T228] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  197.533728][  T228] CR2: 00007fc9feec91b4 CR3: 000000000a460001 CR4: 0000000000772ef0
[  197.534089][  T228] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  197.534445][  T228] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  197.534772][  T228] PKRU: 55555554
[  197.534921][  T228] Call Trace:
[  197.535128][  T228]  <TASK>
[ 197.535256][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 197.535499][ T228] ? __warn (kernel/panic.c:748) 
[ 197.535683][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 197.535888][ T228] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 197.536127][ T228] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 197.536321][ T228] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 197.536545][ T228] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 197.536780][ T228] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 197.537000][ T228] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 197.537254][ T228] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 197.537469][ T228] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 197.537712][ T228] register_netdevice (net/core/dev.c:11003) 
[ 197.537934][ T228] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 197.538220][ T228] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 197.538479][ T228] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 197.538904][ T228] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 197.539244][ T228] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 197.539510][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 197.539724][ T228] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 197.539973][ T228] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 197.540293][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 197.540505][ T228] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 197.540740][ T228] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 197.540952][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 197.541249][ T228] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 197.541467][ T228] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 197.541775][ T228] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 197.541976][ T228] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 197.542187][ T228] ksys_write (fs/read_write.c:731) 
[ 197.542409][ T228] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 197.542644][ T228] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 197.542916][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  197.543173][  T228] RIP: 0033:0x7fc16425eb77
[ 197.543377][ T228] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  197.544075][  T228] RSP: 002b:00007fff9357b968 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  197.544377][  T228] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fc16425eb77
[  197.544691][  T228] RDX: 0000000000000002 RSI: 0000556e8adde130 RDI: 0000000000000001
[  197.544989][  T228] RBP: 0000556e8adde130 R08: 0000000000000000 R09: 00007fc1642d14e0
[  197.545307][  T228] R10: 00007fc1642d13e0 R11: 0000000000000246 R12: 0000000000000002


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