======================================
| 0
| xx__-> [   10.918908][  T229] ------------[ cut here ]------------
| [ 10.919369][ T229] WARNING: CPU: 0 PID: 229 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:10596) 
| [   10.919936][  T229] Modules linked in: netdevsim
[   10.920705][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.921010][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 10.921347][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   10.922194][  T229] RSP: 0018:ffffc90000af7520 EFLAGS: 00010246
[   10.922495][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.922858][  T229] RDX: 0000000000000000 RSI: ffff88800b4b2c98 RDI: ffff888009a02e38
[   10.923236][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[   10.923599][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[   10.923958][  T229] R13: ffff88800b4b2128 R14: ffff88800b4b2008 R15: ffff88800b4b2000
[   10.924337][  T229] FS:  00007f880969e740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[   10.924752][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.925052][  T229] CR2: 0000562a071fa338 CR3: 000000000933a001 CR4: 0000000000772ef0
[   10.925427][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.925791][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.926172][  T229] PKRU: 55555554
[   10.926359][  T229] Call Trace:
[   10.926546][  T229]  <TASK>
[ 10.926681][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 10.926927][ T229] ? __warn (kernel/panic.c:748) 
[ 10.927114][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 10.927374][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.927627][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.927810][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.928049][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.928327][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 10.928592][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 10.928913][ T229] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 10.929172][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.929414][ T229] register_netdevice (net/core/dev.c:11033) 
[ 10.929665][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 10.929918][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.930191][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.930507][ T229] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 10.930691][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.931002][ T229] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.931321][ T229] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 10.931636][ T229] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 10.931887][ T229] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 10.932196][ T229] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 10.932450][ T229] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 10.932630][ T229] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 10.932876][ T229] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 10.933122][ T229] __driver_probe_device (drivers/base/dd.c:800) 
[ 10.933377][ T229] driver_probe_device (drivers/base/dd.c:830) 
[ 10.933615][ T229] __device_attach_driver (drivers/base/dd.c:959) 
[ 10.933856][ T229] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 10.934168][ T229] bus_for_each_drv (drivers/base/bus.c:462) 
[ 10.934409][ T229] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 10.934646][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.934887][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.935123][ T229] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 10.935381][ T229] __device_attach (drivers/base/dd.c:1030) 
[ 10.935624][ T229] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 10.935870][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.936115][ T229] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 10.936380][ T229] bus_probe_device (drivers/base/bus.c:537) 
[ 10.936627][ T229] device_add (drivers/base/core.c:3672) 
[ 10.936865][ T229] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 10.937101][ T229] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 10.937359][ T229] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 10.937676][ T229] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 10.937984][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.938229][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.938476][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.938713][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.938970][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.939177][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.939428][ T229] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 10.939665][ T229] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.939910][ T229] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 10.940173][ T229] ksys_write (fs/read_write.c:731) 
[ 10.940356][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.940593][ T229] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.940842][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.941090][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.941391][  T229] RIP: 0033:0x7f88097dfb77
[ 10.941639][ T229] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   10.942479][  T229] RSP: 002b:00007ffdcf64e718 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.942842][  T229] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f88097dfb77
[   10.943207][  T229] RDX: 0000000000000004 RSI: 0000562a071f9330 RDI: 0000000000000001
[   10.943568][  T229] RBP: 0000562a071f9330 R08: 0000000000000003 R09: 0000000000000077
[   10.943925][  T229] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000004
[   10.944296][  T229] R13: 00007f880989b760 R14: 0000000000000004 R15: 00007f88098969c0
| [   16.511873][  T229] ------------[ cut here ]------------
| [ 16.512366][ T229] WARNING: CPU: 2 PID: 229 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:10596) 
| [   16.512985][  T229] Modules linked in: netdevsim [last unloaded: ip6_udp_tunnel]
| [   16.514040][  T229] Tainted: [W]=WARN
[   16.514272][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 16.514584][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 16.514904][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   16.515777][  T229] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[   16.516100][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   16.516478][  T229] RDX: 0000000000000000 RSI: ffff88800eea2c98 RDI: ffff888009a02de8
[   16.516851][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[   16.517233][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[   16.517602][  T229] R13: ffff88800eea2128 R14: ffff88800eea2008 R15: ffff88800eea2000
[   16.517982][  T229] FS:  00007f880969e740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[   16.518478][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   16.518795][  T229] CR2: 00007f726edcba00 CR3: 000000000933a006 CR4: 0000000000772ef0
[   16.519201][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   16.519573][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   16.519961][  T229] PKRU: 55555554
[   16.520175][  T229] Call Trace:
[   16.520380][  T229]  <TASK>
[ 16.520524][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 16.520775][ T229] ? __warn (kernel/panic.c:748) 
[ 16.520971][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 16.521236][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 16.521494][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 16.521704][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 16.521956][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 16.522232][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 16.522498][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 16.522811][ T229] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 16.523068][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 16.523337][ T229] register_netdevice (net/core/dev.c:11033) 
[ 16.523606][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 16.523875][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 16.524165][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 16.524503][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 16.524836][ T229] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 16.525184][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 16.525455][ T229] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 16.525719][ T229] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 16.526033][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 16.526296][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 16.526542][ T229] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 16.526801][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 16.527076][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 16.527292][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 16.527549][ T229] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 16.527816][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 16.528078][ T229] ksys_write (fs/read_write.c:731) 
[ 16.528291][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 16.528553][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 16.528821][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   16.529181][  T229] RIP: 0033:0x7f88097dfb77
[ 16.529449][ T229] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   16.530299][  T229] RSP: 002b:00007ffdcf64e618 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   16.530672][  T229] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f88097dfb77
[   16.531064][  T229] RDX: 0000000000000002 RSI: 0000562a071f9330 RDI: 0000000000000001
[   16.531442][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[   16.531821][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000002
[   16.532194][  T229] R13: 00007f880989b760 R14: 0000000000000002 R15: 00007f88098969c0
| [   22.344026][  T229] ------------[ cut here ]------------
| [ 22.344545][ T229] WARNING: CPU: 1 PID: 229 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:10596) 
| [   22.345007][  T229] Modules linked in: netdevsim [last unloaded: netdevsim]
| [   22.345812][  T229] Tainted: [W]=WARN
[   22.345983][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.346266][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 22.346547][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   22.347327][  T229] RSP: 0018:ffffc90000af7520 EFLAGS: 00010246
[   22.347607][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   22.347933][  T229] RDX: 0000000000000000 RSI: ffff88800b49ac98 RDI: ffff888009a02e38
[   22.348280][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[   22.348610][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[   22.348960][  T229] R13: ffff88800b49a128 R14: ffff88800b49a008 R15: ffff88800b49a000
[   22.349296][  T229] FS:  00007f880969e740(0000) GS:ffff88802f480000(0000) knlGS:0000000000000000
[   22.349846][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.350156][  T229] CR2: 00007f8809852733 CR3: 000000000933a001 CR4: 0000000000772ef0
[   22.350494][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   22.350836][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   22.351190][  T229] PKRU: 55555554
[   22.351453][  T229] Call Trace:
[   22.351639][  T229]  <TASK>
[ 22.351757][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 22.351994][ T229] ? __warn (kernel/panic.c:748) 
[ 22.352179][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 22.352409][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 22.352639][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 22.352825][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 22.353058][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 22.353309][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 22.353542][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 22.353824][ T229] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 22.354053][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 22.354293][ T229] register_netdevice (net/core/dev.c:11033) 
[ 22.354527][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 22.354770][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 22.355019][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 22.355314][ T229] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 22.355486][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 22.355857][ T229] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 22.356124][ T229] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 22.356414][ T229] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 22.356638][ T229] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 22.356901][ T229] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 22.357116][ T229] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 22.357283][ T229] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 22.357516][ T229] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 22.357742][ T229] __driver_probe_device (drivers/base/dd.c:800) 
[ 22.357969][ T229] driver_probe_device (drivers/base/dd.c:830) 
[ 22.358208][ T229] __device_attach_driver (drivers/base/dd.c:959) 
[ 22.358422][ T229] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 22.358695][ T229] bus_for_each_drv (drivers/base/bus.c:462) 
[ 22.358929][ T229] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 22.359159][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 22.359384][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 22.359613][ T229] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 22.359835][ T229] __device_attach (drivers/base/dd.c:1030) 
[ 22.360069][ T229] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 22.360286][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 22.360495][ T229] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 22.360713][ T229] bus_probe_device (drivers/base/bus.c:537) 
[ 22.360924][ T229] device_add (drivers/base/core.c:3672) 
[ 22.361171][ T229] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 22.361384][ T229] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 22.361603][ T229] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 22.361879][ T229] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 22.362160][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 22.362370][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 22.362585][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 22.362801][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 22.363013][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 22.363190][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 22.363406][ T229] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 22.363610][ T229] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 22.363826][ T229] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 22.364039][ T229] ksys_write (fs/read_write.c:731) 
[ 22.364216][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 22.364425][ T229] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 22.364643][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 22.364855][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.365109][  T229] RIP: 0033:0x7f88097dfb77
[ 22.365337][ T229] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   22.366054][  T229] RSP: 002b:00007ffdcf651eb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   22.366374][  T229] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f88097dfb77
[   22.366680][  T229] RDX: 0000000000000004 RSI: 0000562a071f9330 RDI: 0000000000000001
[   22.367001][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[   22.367324][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000004
[   22.367656][  T229] R13: 00007f880989b760 R14: 0000000000000004 R15: 00007f88098969c0
| [   22.407017][  T229] ------------[ cut here ]------------
| [ 22.407454][ T229] WARNING: CPU: 0 PID: 229 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:10596) 
| [   22.407831][  T229] Modules linked in: netdevsim [last unloaded: netdevsim]
| [   22.408476][  T229] Tainted: [W]=WARN
[   22.408649][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.408891][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 22.409131][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   22.409786][  T229] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[   22.410032][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   22.410324][  T229] RDX: 0000000000000000 RSI: ffff888004f42c98 RDI: ffff888009a02de8
[   22.410642][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[   22.410943][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[   22.411253][  T229] R13: ffff888004f42128 R14: ffff888004f42008 R15: ffff888004f42000
[   22.411553][  T229] FS:  00007f880969e740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[   22.411902][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.412167][  T229] CR2: 00007f91742171b4 CR3: 000000000933a006 CR4: 0000000000772ef0
[   22.412483][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   22.412765][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   22.413041][  T229] PKRU: 55555554
[   22.413194][  T229] Call Trace:
[   22.413487][  T229]  <TASK>
[ 22.413581][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 22.413772][ T229] ? __warn (kernel/panic.c:748) 
[ 22.413950][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 22.414170][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 22.414383][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 22.414537][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 22.414737][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 22.414949][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 22.415172][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 22.415427][ T229] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 22.415643][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 22.415853][ T229] register_netdevice (net/core/dev.c:11033) 
[ 22.416062][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 22.416283][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 22.416513][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 22.416780][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 22.417237][ T229] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 22.417626][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 22.417828][ T229] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 22.418167][ T229] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 22.418426][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 22.418624][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 22.418848][ T229] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 22.419176][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 22.419383][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 22.419546][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 22.419752][ T229] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 22.420075][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 22.420297][ T229] ksys_write (fs/read_write.c:731) 
[ 22.420453][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 22.420674][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 22.420996][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.421261][  T229] RIP: 0033:0x7f88097dfb77
[ 22.421468][ T229] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   22.422318][  T229] RSP: 002b:00007ffdcf651eb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   22.422605][  T229] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f88097dfb77
[   22.423021][  T229] RDX: 0000000000000002 RSI: 0000562a071f9330 RDI: 0000000000000001
[   22.423330][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[   22.423644][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000002
[   22.423940][  T229] R13: 00007f880989b760 R14: 0000000000000002 R15: 00007f88098969c0
| [   28.660205][  T229] ------------[ cut here ]------------
| [ 28.660576][ T229] WARNING: CPU: 0 PID: 229 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:10596) 
| [   28.660988][  T229] Modules linked in: netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   28.661819][  T229] Tainted: [W]=WARN
[   28.661977][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 28.662258][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 28.662528][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  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
[   28.663268][  T229] RSP: 0018:ffffc90000af7520 EFLAGS: 00010246
[   28.663534][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   28.663843][  T229] RDX: 0000000000000000 RSI: ffff88800b32ac98 RDI: ffff888009a02e38
[   28.664172][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[   28.664483][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[   28.664893][  T229] R13: ffff88800b32a128 R14: ffff88800b32a008 R15: ffff88800b32a000
[   28.665225][  T229] FS:  00007f880969e740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[   28.665586][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   28.665847][  T229] CR2: 00007f8809852733 CR3: 000000000933a006 CR4: 0000000000772ef0
[   28.666296][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   28.666613][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   28.666920][  T229] PKRU: 55555554
[   28.667078][  T229] Call Trace:
[   28.667267][  T229]  <TASK>
[ 28.667381][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 28.667596][ T229] ? __warn (kernel/panic.c:748) 
[ 28.667758][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 28.667966][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 28.668216][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 28.668392][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 28.668619][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 28.668879][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 28.669150][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 28.669443][ T229] ? _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) 
[ 28.669664][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 28.669878][ T229] register_netdevice (net/core/dev.c:11033) 
[ 28.670105][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 28.670374][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 28.670622][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 28.670905][ T229] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 28.671077][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 28.671373][ T229] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 28.671660][ T229] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 28.671933][ T229] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 28.672179][ T229] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 28.672445][ T229] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 28.672656][ T229] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 28.672813][ T229] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 28.673026][ T229] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 28.673259][ T229] __driver_probe_device (drivers/base/dd.c:800) 
[ 28.673477][ T229] driver_probe_device (drivers/base/dd.c:830) 
[ 28.673691][ T229] __device_attach_driver (drivers/base/dd.c:959) 
[ 28.673899][ T229] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 28.674191][ T229] bus_for_each_drv (drivers/base/bus.c:462) 
[ 28.674402][ T229] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 28.674608][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 28.674815][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 28.675022][ T229] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 28.675262][ T229] __device_attach (drivers/base/dd.c:1030) 
[ 28.675474][ T229] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 28.675678][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 28.675887][ T229] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 28.676102][ T229] bus_probe_device (drivers/base/bus.c:537) 
[ 28.676329][ T229] device_add (drivers/base/core.c:3672) 
[ 28.676551][ T229] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 28.676756][ T229] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 28.676983][ T229] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 28.677272][ T229] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 28.677544][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 28.677750][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 28.677962][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 28.678197][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 28.678422][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 28.678587][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 28.678809][ T229] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 28.679015][ T229] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 28.679252][ T229] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 28.679472][ T229] ksys_write (fs/read_write.c:731) 
[ 28.679632][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 28.679838][ T229] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 28.680063][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 28.680293][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   28.680559][  T229] RIP: 0033:0x7f88097dfb77
[ 28.680770][ T229] 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
[   28.681515][  T229] RSP: 002b:00007ffdcf651eb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   28.681826][  T229] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f88097dfb77
[   28.682131][  T229] RDX: 0000000000000004 RSI: 0000562a071f9330 RDI: 0000000000000001
[   28.682468][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[   28.682777][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000004
[   28.683079][  T229] R13: 00007f880989b760 R14: 0000000000000004 R15: 00007f88098969c0
| [   28.722743][  T229] ------------[ cut here ]------------
| [ 28.723297][ T229] WARNING: CPU: 2 PID: 229 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:10596) 
| [   28.723896][  T229] Modules linked in: netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   28.724747][  T229] Tainted: [W]=WARN
[   28.724915][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 28.725239][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 28.725587][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  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
[   28.726582][  T229] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[   28.727024][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   28.727554][  T229] RDX: 0000000000000000 RSI: ffff88800b2bac98 RDI: ffff888009a02de8
[   28.728050][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[   28.728584][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[   28.729109][  T229] R13: ffff88800b2ba128 R14: ffff88800b2ba008 R15: ffff88800b2ba000
[   28.729639][  T229] FS:  00007f880969e740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[   28.730247][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   28.730819][  T229] CR2: 000055f1067cae38 CR3: 000000000933a001 CR4: 0000000000772ef0
[   28.731162][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   28.731577][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   28.732192][  T229] PKRU: 55555554
[   28.732377][  T229] Call Trace:
[   28.732544][  T229]  <TASK>
[ 28.732712][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 28.732942][ T229] ? __warn (kernel/panic.c:748) 
[ 28.733239][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 28.733492][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 28.733714][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 28.733952][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 28.734230][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 28.734522][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 28.734749][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 28.735023][ T229] ? _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) 
[ 28.735302][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 28.735598][ T229] register_netdevice (net/core/dev.c:11033) 
[ 28.735873][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 28.736172][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 28.736420][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 28.736698][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 28.737055][ T229] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 28.737366][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 28.737614][ T229] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 28.737842][ T229] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 28.738225][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 28.738648][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 28.738879][ T229] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 28.739102][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 28.739423][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 28.739970][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 28.740237][ T229] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 28.740529][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 28.740757][ T229] ksys_write (fs/read_write.c:731) 
[ 28.740926][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 28.741172][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 28.741428][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   28.741943][  T229] RIP: 0033:0x7f88097dfb77
[ 28.742418][ T229] 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
[   28.743312][  T229] RSP: 002b:00007ffdcf64f8e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   28.743763][  T229] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f88097dfb77
[   28.744079][  T229] RDX: 0000000000000002 RSI: 0000562a071f9330 RDI: 0000000000000001
[   28.744532][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[   28.744966][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000002
[   28.745535][  T229] R13: 00007f880989b760 R14: 0000000000000002 R15: 00007f88098969c0
| [   41.068608][  T229] ------------[ cut here ]------------
| [ 41.068878][ T229] WARNING: CPU: 2 PID: 229 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:10596) 
| [   41.069298][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   41.070084][  T229] Tainted: [W]=WARN
[   41.070257][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 41.070512][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 41.070768][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  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
[   41.071453][  T229] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[   41.071704][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   41.072001][  T229] RDX: 0000000000000000 RSI: ffff88800c22ac98 RDI: ffff888009a02de8
[   41.072306][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[   41.072602][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[   41.072896][  T229] R13: ffff88800c22a128 R14: ffff88800c22a008 R15: ffff88800c22a000
[   41.073202][  T229] FS:  00007f880969e740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[   41.073545][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   41.073795][  T229] CR2: 00007f88097e0000 CR3: 000000000933a003 CR4: 0000000000772ef0
[   41.074091][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   41.074398][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   41.074695][  T229] PKRU: 55555554
[   41.074853][  T229] Call Trace:
[   41.075010][  T229]  <TASK>
[ 41.075121][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 41.075338][ T229] ? __warn (kernel/panic.c:748) 
[ 41.075499][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 41.075706][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 41.075917][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 41.076079][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 41.076346][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 41.076565][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 41.076782][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 41.077037][ T229] ? _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) 
[ 41.077255][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 41.077461][ T229] register_netdevice (net/core/dev.c:11033) 
[ 41.077668][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 41.077881][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 41.078106][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 41.078373][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 41.078645][ T229] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 41.078918][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 41.079122][ T229] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 41.079346][ T229] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 41.079604][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 41.079805][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 41.080010][ T229] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 41.080224][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 41.080433][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 41.080598][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 41.080807][ T229] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 41.081017][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 41.081243][ T229] ksys_write (fs/read_write.c:731) 
[ 41.081399][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 41.081614][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 41.081818][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   41.082063][  T229] RIP: 0033:0x7f88097dfb77
[ 41.082279][ T229] 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
[   41.082943][  T229] RSP: 002b:00007ffdcf64f8e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   41.083248][  T229] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f88097dfb77
[   41.083537][  T229] RDX: 0000000000000002 RSI: 0000562a071f9330 RDI: 0000000000000001
[   41.083830][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[   41.084122][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000002
[   41.084420][  T229] R13: 00007f880989b760 R14: 0000000000000002 R15: 00007f88098969c0
| [   53.390262][  T229] ------------[ cut here ]------------
| [ 53.390693][ T229] WARNING: CPU: 3 PID: 229 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:10596) 
| [   53.391128][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   53.392261][  T229] Tainted: [W]=WARN
[   53.392436][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 53.392704][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 53.392988][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  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
[   53.393744][  T229] RSP: 0018:ffffc90000af7520 EFLAGS: 00010246
[   53.394015][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   53.394341][  T229] RDX: 0000000000000000 RSI: ffff888004f42c98 RDI: ffff888009a02e38
[   53.394655][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[   53.394968][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[   53.395302][  T229] R13: ffff888004f42128 R14: ffff888004f42008 R15: ffff888004f42000
[   53.395627][  T229] FS:  00007f880969e740(0000) GS:ffff88802f580000(0000) knlGS:0000000000000000
[   53.395991][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   53.396269][  T229] CR2: 00007f726edcba00 CR3: 000000000933a002 CR4: 0000000000772ef0
[   53.396588][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   53.396904][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   53.397225][  T229] PKRU: 55555554
[   53.397386][  T229] Call Trace:
[   53.397555][  T229]  <TASK>
[ 53.397665][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 53.397893][ T229] ? __warn (kernel/panic.c:748) 
[ 53.398056][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 53.398283][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 53.398501][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 53.398676][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 53.398893][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 53.399117][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 53.399370][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 53.399644][ T229] ? _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) 
[ 53.399861][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 53.400074][ T229] register_netdevice (net/core/dev.c:11033) 
[ 53.400301][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 53.400531][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 53.400789][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 53.401055][ T229] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 53.401228][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 53.401501][ T229] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 53.401843][ T229] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 53.402135][ T229] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 53.402370][ T229] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 53.402632][ T229] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 53.402853][ T229] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 53.403011][ T229] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 53.403248][ T229] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 53.403472][ T229] __driver_probe_device (drivers/base/dd.c:800) 
[ 53.403689][ T229] driver_probe_device (drivers/base/dd.c:830) 
[ 53.403904][ T229] __device_attach_driver (drivers/base/dd.c:959) 
[ 53.404122][ T229] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 53.404397][ T229] bus_for_each_drv (drivers/base/bus.c:462) 
[ 53.404609][ T229] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 53.404821][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 53.405039][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 53.405263][ T229] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 53.405481][ T229] __device_attach (drivers/base/dd.c:1030) 
[ 53.405695][ T229] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 53.405906][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 53.406114][ T229] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 53.406353][ T229] bus_probe_device (drivers/base/bus.c:537) 
[ 53.406585][ T229] device_add (drivers/base/core.c:3672) 
[ 53.406804][ T229] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 53.407015][ T229] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 53.407252][ T229] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 53.407529][ T229] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 53.407814][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 53.408028][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 53.408268][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 53.408475][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 53.408703][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 53.408872][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 53.409090][ T229] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 53.409319][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 53.409538][ T229] ksys_write (fs/read_write.c:731) 
[ 53.409707][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 53.409934][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 53.410161][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   53.410423][  T229] RIP: 0033:0x7f88097dfb77
[ 53.410647][ T229] 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
[   53.411395][  T229] RSP: 002b:00007ffdcf651eb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   53.411714][  T229] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f88097dfb77
[   53.412029][  T229] RDX: 0000000000000004 RSI: 0000562a071f9330 RDI: 0000000000000001
[   53.412343][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[   53.412661][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000004
[   53.412975][  T229] R13: 00007f880989b760 R14: 0000000000000004 R15: 00007f88098969c0
| [   53.466275][  T229] ------------[ cut here ]------------
| [ 53.466868][ T229] WARNING: CPU: 2 PID: 229 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:10596) 
| [   53.467533][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   53.468916][  T229] Tainted: [W]=WARN
[   53.469151][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 53.469478][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 53.469756][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  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
[   53.470454][  T229] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[   53.470710][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   53.471003][  T229] RDX: 0000000000000000 RSI: ffff88800b4b2c98 RDI: ffff888009a02de8
[   53.471315][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[   53.471618][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[   53.471943][  T229] R13: ffff88800b4b2128 R14: ffff88800b4b2008 R15: ffff88800b4b2000
[   53.472299][  T229] FS:  00007f880969e740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[   53.472661][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   53.472911][  T229] CR2: 00007ffdcf64fff8 CR3: 000000000933a005 CR4: 0000000000772ef0
[   53.473278][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   53.473883][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   53.474223][  T229] PKRU: 55555554
[   53.474422][  T229] Call Trace:
[   53.474580][  T229]  <TASK>
[ 53.474694][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 53.474968][ T229] ? __warn (kernel/panic.c:748) 
[ 53.475155][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 53.475379][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 53.475645][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 53.475872][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 53.476095][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 53.476349][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 53.476631][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 53.476893][ T229] ? _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) 
[ 53.477188][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 53.477421][ T229] register_netdevice (net/core/dev.c:11033) 
[ 53.477653][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 53.477924][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 53.478158][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 53.478486][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 53.478814][ T229] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 53.479153][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 53.479401][ T229] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 53.479652][ T229] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 53.480186][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 53.480455][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 53.480695][ T229] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 53.480903][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 53.481194][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 53.481409][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 53.481639][ T229] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 53.481851][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 53.482061][ T229] ksys_write (fs/read_write.c:731) 
[ 53.482228][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 53.482644][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 53.482852][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   53.483175][  T229] RIP: 0033:0x7f88097dfb77
[ 53.483405][ T229] 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
[   53.484164][  T229] RSP: 002b:00007ffdcf64f8e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   53.484488][  T229] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f88097dfb77
[   53.484781][  T229] RDX: 0000000000000002 RSI: 0000562a071f9330 RDI: 0000000000000001
[   53.485270][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[   53.485663][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000002
[   53.485955][  T229] R13: 00007f880989b760 R14: 0000000000000002 R15: 00007f88098969c0
| [   66.566517][  T229] ------------[ cut here ]------------
| [ 66.566763][ T229] WARNING: CPU: 3 PID: 229 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:10596) 
| [   66.567174][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   66.567963][  T229] Tainted: [W]=WARN
[   66.568115][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 66.568415][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 66.568681][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  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
[   66.569351][  T229] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[   66.569595][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   66.569878][  T229] RDX: 0000000000000000 RSI: ffff88800b49ac98 RDI: ffff888009a02de8
[   66.570163][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[   66.570450][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[   66.570731][  T229] R13: ffff88800b49a128 R14: ffff88800b49a008 R15: ffff88800b49a000
[   66.571008][  T229] FS:  00007f880969e740(0000) GS:ffff88802f580000(0000) knlGS:0000000000000000
[   66.571342][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   66.571585][  T229] CR2: 00007f88097e0000 CR3: 000000000933a004 CR4: 0000000000772ef0
[   66.571884][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   66.572192][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   66.572488][  T229] PKRU: 55555554
[   66.572637][  T229] Call Trace:
[   66.572785][  T229]  <TASK>
[ 66.572904][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 66.573108][ T229] ? __warn (kernel/panic.c:748) 
[ 66.573274][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 66.573476][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 66.573682][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 66.573842][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 66.574064][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 66.574290][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 66.574502][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 66.574759][ T229] ? _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) 
[ 66.574977][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 66.575198][ T229] register_netdevice (net/core/dev.c:11033) 
[ 66.575410][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 66.575628][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 66.575852][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 66.576121][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 66.576412][ T229] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 66.576669][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 66.576884][ T229] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 66.577108][ T229] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 66.577376][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 66.577589][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 66.577791][ T229] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 66.577997][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 66.578212][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 66.578373][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 66.578588][ T229] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 66.578801][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 66.579033][ T229] ksys_write (fs/read_write.c:731) 
[ 66.579206][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 66.579424][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 66.579629][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   66.579881][  T229] RIP: 0033:0x7f88097dfb77
[ 66.580096][ T229] 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
[   66.580817][  T229] RSP: 002b:00007ffdcf64f8e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   66.581117][  T229] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f88097dfb77
[   66.581420][  T229] RDX: 0000000000000002 RSI: 0000562a071f9330 RDI: 0000000000000001
[   66.581727][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[   66.582213][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000002
[   66.582518][  T229] R13: 00007f880989b760 R14: 0000000000000002 R15: 00007f88098969c0
| [   79.109173][  T229] ------------[ cut here ]------------
| [ 79.109576][ T229] WARNING: CPU: 1 PID: 229 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:10596) 
| [   79.110024][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   79.110952][  T229] Tainted: [W]=WARN
[   79.111122][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 79.111410][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 79.111695][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  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
[   79.112486][  T229] RSP: 0018:ffffc90000af7520 EFLAGS: 00010246
[   79.112770][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   79.113105][  T229] RDX: 0000000000000000 RSI: ffff88800ed8ac98 RDI: ffff888009a02e38
[   79.113452][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[   79.113786][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[   79.114116][  T229] R13: ffff88800ed8a128 R14: ffff88800ed8a008 R15: ffff88800ed8a000
[   79.114462][  T229] FS:  00007f880969e740(0000) GS:ffff88802f480000(0000) knlGS:0000000000000000
[   79.114855][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   79.115705][  T229] CR2: 00007f88097e0000 CR3: 000000000933a005 CR4: 0000000000772ef0
[   79.116031][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   79.116376][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   79.116708][  T229] PKRU: 55555554
[   79.116876][  T229] Call Trace:
[   79.117047][  T229]  <TASK>
[ 79.117169][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 79.117395][ T229] ? __warn (kernel/panic.c:748) 
[ 79.117567][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 79.117795][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 79.118026][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 79.118211][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 79.118439][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 79.118687][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 79.118925][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 79.119223][ T229] ? _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) 
[ 79.119459][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 79.119690][ T229] register_netdevice (net/core/dev.c:11033) 
[ 79.119923][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 79.120179][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 79.120432][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 79.120721][ T229] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 79.120894][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 79.121200][ T229] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 79.121495][ T229] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 79.121785][ T229] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 79.122023][ T229] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 79.122318][ T229] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 79.122551][ T229] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 79.122721][ T229] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 79.122954][ T229] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 79.123195][ T229] __driver_probe_device (drivers/base/dd.c:800) 
[ 79.123422][ T229] driver_probe_device (drivers/base/dd.c:830) 
[ 79.123648][ T229] __device_attach_driver (drivers/base/dd.c:959) 
[ 79.123902][ T229] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 79.124188][ T229] bus_for_each_drv (drivers/base/bus.c:462) 
[ 79.124415][ T229] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 79.124639][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 79.124865][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 79.125088][ T229] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 79.125326][ T229] __device_attach (drivers/base/dd.c:1030) 
[ 79.125558][ T229] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 79.125779][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 79.126004][ T229] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 79.126247][ T229] bus_probe_device (drivers/base/bus.c:537) 
[ 79.126474][ T229] device_add (drivers/base/core.c:3672) 
[ 79.126701][ T229] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 79.126925][ T229] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 79.127176][ T229] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 79.127464][ T229] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 79.127756][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 79.127979][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 79.128221][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 79.128455][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 79.128699][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 79.128881][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 79.129112][ T229] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 79.129355][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 79.129591][ T229] ksys_write (fs/read_write.c:731) 
[ 79.129763][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 79.130000][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 79.130238][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   79.130523][  T229] RIP: 0033:0x7f88097dfb77
[ 79.130754][ T229] 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
[   79.131533][  T229] RSP: 002b:00007ffdcf651eb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   79.131868][  T229] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f88097dfb77
[   79.132215][  T229] RDX: 0000000000000004 RSI: 0000562a071f9330 RDI: 0000000000000001
[   79.132545][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[   79.132881][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000004
[   79.133220][  T229] R13: 00007f880989b760 R14: 0000000000000004 R15: 00007f88098969c0
| [   79.173316][  T229] ------------[ cut here ]------------
| [ 79.173638][ T229] WARNING: CPU: 0 PID: 229 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:10596) 
| [   79.174063][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   79.174935][  T229] Tainted: [W]=WARN
[   79.175092][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 79.175361][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 79.175618][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  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
[   79.176322][  T229] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[   79.176583][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   79.176879][  T229] RDX: 0000000000000000 RSI: ffff888005972c98 RDI: ffff888009a02de8
[   79.177185][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[   79.177484][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[   79.177784][  T229] R13: ffff888005972128 R14: ffff888005972008 R15: ffff888005972000
[   79.178091][  T229] FS:  00007f880969e740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[   79.178447][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   79.178709][  T229] CR2: 00007f726ebdb5a0 CR3: 000000000933a004 CR4: 0000000000772ef0
[   79.179010][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   79.179323][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   79.179716][  T229] PKRU: 55555554
[   79.179873][  T229] Call Trace:
[   79.180026][  T229]  <TASK>
[ 79.180132][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 79.180351][ T229] ? __warn (kernel/panic.c:748) 
[ 79.180508][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 79.180716][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 79.180929][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 79.181084][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 79.181299][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 79.181519][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 79.181733][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 79.181995][ T229] ? _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) 
[ 79.182219][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 79.182429][ T229] register_netdevice (net/core/dev.c:11033) 
[ 79.182637][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 79.182852][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 79.183072][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 79.183346][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 79.183628][ T229] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 79.183895][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 79.184103][ T229] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 79.184330][ T229] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 79.184592][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 79.184792][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 79.184996][ T229] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 79.185215][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 79.185423][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 79.185584][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 79.185790][ T229] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 79.186000][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 79.186218][ T229] ksys_write (fs/read_write.c:731) 
[ 79.186373][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 79.186591][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 79.186819][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   79.187084][  T229] RIP: 0033:0x7f88097dfb77
[ 79.187303][ T229] 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
[   79.187998][  T229] RSP: 002b:00007ffdcf6511d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   79.188314][  T229] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f88097dfb77
[   79.188630][  T229] RDX: 0000000000000002 RSI: 0000562a071f9330 RDI: 0000000000000001
[   79.188926][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[   79.189234][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000002
[   79.189531][  T229] R13: 00007f880989b760 R14: 0000000000000002 R15: 00007f88098969c0
| [   86.062666][  T229] ------------[ cut here ]------------
| [ 86.062912][ T229] WARNING: CPU: 1 PID: 229 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:10596) 
| [   86.063377][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   86.064163][  T229] Tainted: [W]=WARN
[   86.064307][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 86.064544][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 86.064788][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  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
[   86.065452][  T229] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[   86.065688][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   86.065971][  T229] RDX: 0000000000000000 RSI: ffff88800b32ac98 RDI: ffff888009a02de8
[   86.066265][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[   86.066546][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[   86.066829][  T229] R13: ffff88800b32a128 R14: ffff88800b32a008 R15: ffff88800b32a000
[   86.067111][  T229] FS:  00007f880969e740(0000) GS:ffff88802f480000(0000) knlGS:0000000000000000
[   86.067449][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   86.067689][  T229] CR2: 00007f88097e0000 CR3: 000000000933a004 CR4: 0000000000772ef0
[   86.067973][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   86.068268][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   86.068560][  T229] PKRU: 55555554
[   86.068705][  T229] Call Trace:
[   86.068850][  T229]  <TASK>
[ 86.068954][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 86.069154][ T229] ? __warn (kernel/panic.c:748) 
[ 86.069307][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 86.069499][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 86.069697][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 86.069842][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 86.070034][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 86.070249][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 86.070457][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 86.070696][ T229] ? _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) 
[ 86.070891][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 86.071086][ T229] register_netdevice (net/core/dev.c:11033) 
[ 86.071289][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 86.071488][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 86.071700][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 86.071948][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 86.072216][ T229] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 86.072463][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 86.072653][ T229] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 86.072851][ T229] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 86.073225][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 86.073415][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 86.073603][ T229] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 86.073795][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 86.073992][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 86.074151][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 86.074344][ T229] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 86.074540][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 86.074742][ T229] ksys_write (fs/read_write.c:731) 
[ 86.074888][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 86.075088][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 86.075284][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   86.075516][  T229] RIP: 0033:0x7f88097dfb77
[ 86.075711][ T229] 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
[   86.076397][  T229] RSP: 002b:00007ffdcf6511d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   86.076679][  T229] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f88097dfb77
[   86.076951][  T229] RDX: 0000000000000002 RSI: 0000562a071f9330 RDI: 0000000000000001
[   86.077237][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[   86.077513][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000002
[   86.077786][  T229] R13: 00007f880989b760 R14: 0000000000000002 R15: 00007f88098969c0
| [   93.047356][  T229] ------------[ cut here ]------------
| [ 93.047683][ T229] WARNING: CPU: 0 PID: 229 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:10596) 
| [   93.048107][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   93.048997][  T229] Tainted: [W]=WARN
[   93.049176][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 93.049434][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 93.049693][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  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
[   93.050508][  T229] RSP: 0018:ffffc90000af7520 EFLAGS: 00010246
[   93.050770][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   93.051078][  T229] RDX: 0000000000000000 RSI: ffff88800b2bac98 RDI: ffff888009a02e38
[   93.051395][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[   93.051721][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[   93.052028][  T229] R13: ffff88800b2ba128 R14: ffff88800b2ba008 R15: ffff88800b2ba000
[   93.052350][  T229] FS:  00007f880969e740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[   93.052707][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   93.052971][  T229] CR2: 00007f88097e0000 CR3: 000000000933a001 CR4: 0000000000772ef0
[   93.053294][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   93.053617][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   93.053928][  T229] PKRU: 55555554
[   93.054094][  T229] Call Trace:
[   93.054352][  T229]  <TASK>
[ 93.054465][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 93.054686][ T229] ? __warn (kernel/panic.c:748) 
[ 93.054845][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 93.055057][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 93.055283][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 93.055444][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 93.055650][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 93.055880][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 93.056098][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 93.056367][ T229] ? _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) 
[ 93.056599][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 93.056813][ T229] register_netdevice (net/core/dev.c:11033) 
[ 93.057027][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 93.057256][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 93.057479][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 93.057742][ T229] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 93.057912][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 93.058193][ T229] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 93.058466][ T229] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 93.058743][ T229] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 93.058961][ T229] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 93.059236][ T229] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 93.059455][ T229] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 93.059611][ T229] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 93.059825][ T229] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 93.060039][ T229] __driver_probe_device (drivers/base/dd.c:800) 
[ 93.060270][ T229] driver_probe_device (drivers/base/dd.c:830) 
[ 93.060482][ T229] __device_attach_driver (drivers/base/dd.c:959) 
[ 93.060695][ T229] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 93.060953][ T229] bus_for_each_drv (drivers/base/bus.c:462) 
[ 93.061175][ T229] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 93.061384][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 93.061593][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 93.061800][ T229] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 93.062012][ T229] __device_attach (drivers/base/dd.c:1030) 
[ 93.062227][ T229] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 93.062434][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 93.062642][ T229] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 93.062857][ T229] bus_probe_device (drivers/base/bus.c:537) 
[ 93.063067][ T229] device_add (drivers/base/core.c:3672) 
[ 93.063285][ T229] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 93.063491][ T229] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 93.063710][ T229] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 93.063976][ T229] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 93.064257][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 93.064465][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 93.064676][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 93.064880][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 93.065092][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 93.065268][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 93.065482][ T229] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 93.065705][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 93.065919][ T229] ksys_write (fs/read_write.c:731) 
[ 93.066079][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 93.066306][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 93.066516][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   93.066771][  T229] RIP: 0033:0x7f88097dfb77
[ 93.066985][ T229] 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
[   93.067708][  T229] RSP: 002b:00007ffdcf651eb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   93.068016][  T229] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f88097dfb77
[   93.068328][  T229] RDX: 0000000000000004 RSI: 0000562a071f9330 RDI: 0000000000000001
[   93.068673][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[   93.068978][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000004
[   93.069291][  T229] R13: 00007f880989b760 R14: 0000000000000004 R15: 00007f88098969c0
| [   93.116071][  T229] ------------[ cut here ]------------
| [ 93.116939][ T229] WARNING: CPU: 0 PID: 229 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:10596) 
| [   93.117333][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   93.118107][  T229] Tainted: [W]=WARN
[   93.118260][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 93.118512][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 93.118750][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  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
[   93.119411][  T229] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[   93.119655][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   93.119933][  T229] RDX: 0000000000000000 RSI: ffff88800c22ac98 RDI: ffff888009a02de8
[   93.120240][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[   93.120524][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[   93.120799][  T229] R13: ffff88800c22a128 R14: ffff88800c22a008 R15: ffff88800c22a000
[   93.121078][  T229] FS:  00007f880969e740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[   93.121409][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   93.121648][  T229] CR2: 00007ffdcf64efd0 CR3: 000000000933a001 CR4: 0000000000772ef0
[   93.121926][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   93.122209][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   93.122586][  T229] PKRU: 55555554
[   93.122769][  T229] Call Trace:
[   93.122915][  T229]  <TASK>
[ 93.123025][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 93.123236][ T229] ? __warn (kernel/panic.c:748) 
[ 93.123381][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 93.123573][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 93.123768][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 93.123911][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 93.124102][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 93.124326][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 93.124540][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 93.124784][ T229] ? _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) 
[ 93.124976][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 93.125178][ T229] register_netdevice (net/core/dev.c:11033) 
[ 93.125374][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 93.125570][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 93.125773][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 93.126031][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 93.126301][ T229] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 93.126545][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 93.126735][ T229] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 93.126934][ T229] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 93.127187][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 93.127377][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 93.127566][ T229] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 93.127756][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 93.127951][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 93.128104][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 93.128334][ T229] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 93.128541][ T229] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 93.128736][ T229] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 93.128937][ T229] ksys_write (fs/read_write.c:731) 
[ 93.129083][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 93.129283][ T229] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 93.129482][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 93.129674][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   93.130045][  T229] RIP: 0033:0x7f88097dfb77
[ 93.130368][ T229] 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
[   93.131023][  T229] RSP: 002b:00007ffdcf64f558 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   93.131313][  T229] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f88097dfb77
[   93.131594][  T229] RDX: 0000000000000002 RSI: 0000562a071f9330 RDI: 0000000000000001
[   93.131887][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[   93.132188][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000002
[   93.132595][  T229] R13: 00007f880989b760 R14: 0000000000000002 R15: 00007f88098969c0
| [   95.880882][  T229] ------------[ cut here ]------------
| [ 95.881254][ T229] WARNING: CPU: 2 PID: 229 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:10596) 
| [   95.881664][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   95.882535][  T229] Tainted: [W]=WARN
[   95.882705][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 95.882962][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 95.883248][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  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
[   95.883955][  T229] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[   95.884232][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   95.884544][  T229] RDX: 0000000000000000 RSI: ffff888004f42c98 RDI: ffff888009a02de8
[   95.884854][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[   95.885181][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[   95.885488][  T229] R13: ffff888004f42128 R14: ffff888004f42008 R15: ffff888004f42000
[   95.885799][  T229] FS:  00007f880969e740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[   95.886180][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   95.886447][  T229] CR2: 00007ffdcf652028 CR3: 000000000933a005 CR4: 0000000000772ef0
[   95.886774][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   95.887118][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   95.887451][  T229] PKRU: 55555554
[   95.887618][  T229] Call Trace:
[   95.887787][  T229]  <TASK>
[ 95.887905][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 95.888116][ T229] ? __warn (kernel/panic.c:748) 
[ 95.888586][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 95.888809][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 95.889029][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 95.889210][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 95.889428][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 95.889647][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 95.889861][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 95.890114][ T229] ? _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) 
[ 95.890343][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 95.890559][ T229] register_netdevice (net/core/dev.c:11033) 
[ 95.890793][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 95.891028][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 95.891279][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 95.891557][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 95.891848][ T229] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 95.892131][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 95.892360][ T229] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 95.892584][ T229] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 95.892855][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 95.893074][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 95.893300][ T229] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 95.893515][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 95.893744][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 95.893922][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 95.894164][ T229] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 95.894387][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 95.894608][ T229] ksys_write (fs/read_write.c:731) 
[ 95.894776][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 95.895009][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 95.895238][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   95.895502][  T229] RIP: 0033:0x7f88097dfb77
[ 95.895713][ T229] 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
[   95.896429][  T229] RSP: 002b:00007ffdcf64f558 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   95.896753][  T229] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f88097dfb77
[   95.897050][  T229] RDX: 0000000000000002 RSI: 0000562a071f9330 RDI: 0000000000000001
[   95.897356][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[   95.897649][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000002
[   95.897952][  T229] R13: 00007f880989b760 R14: 0000000000000002 R15: 00007f88098969c0
| [   98.585555][  T229] ------------[ cut here ]------------
| [ 98.585912][ T229] WARNING: CPU: 3 PID: 229 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:10596) 
| [   98.586355][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   98.587231][  T229] Tainted: [W]=WARN
[   98.587391][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 98.587645][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 98.587911][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  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
[   98.588663][  T229] RSP: 0018:ffffc90000af7520 EFLAGS: 00010246
[   98.588935][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   98.589255][  T229] RDX: 0000000000000000 RSI: ffff88800b4b2c98 RDI: ffff888009a02e38
[   98.589672][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[   98.589995][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[   98.590341][  T229] R13: ffff88800b4b2128 R14: ffff88800b4b2008 R15: ffff88800b4b2000
[   98.590688][  T229] FS:  00007f880969e740(0000) GS:ffff88802f580000(0000) knlGS:0000000000000000
[   98.591074][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   98.591409][  T229] CR2: 0000562a071d0000 CR3: 000000000933a005 CR4: 0000000000772ef0
[   98.591907][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   98.592429][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   98.592942][  T229] PKRU: 55555554
[   98.593223][  T229] Call Trace:
[   98.593492][  T229]  <TASK>
[ 98.593674][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 98.594026][ T229] ? __warn (kernel/panic.c:748) 
[ 98.594344][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 98.594708][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 98.595081][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 98.595372][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 98.595729][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 98.596111][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 98.596500][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 98.596952][ T229] ? _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) 
[ 98.597322][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 98.597666][ T229] register_netdevice (net/core/dev.c:11033) 
[ 98.597931][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 98.598188][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 98.598424][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 98.598691][ T229] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 98.598868][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 98.599156][ T229] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 98.599440][ T229] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 98.599717][ T229] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 98.600047][ T229] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 98.600326][ T229] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 98.600549][ T229] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 98.600707][ T229] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 98.600936][ T229] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 98.601172][ T229] __driver_probe_device (drivers/base/dd.c:800) 
[ 98.601382][ T229] driver_probe_device (drivers/base/dd.c:830) 
[ 98.601589][ T229] __device_attach_driver (drivers/base/dd.c:959) 
[ 98.601809][ T229] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 98.602063][ T229] bus_for_each_drv (drivers/base/bus.c:462) 
[ 98.602297][ T229] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 98.602509][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 98.602722][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 98.602945][ T229] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 98.603174][ T229] __device_attach (drivers/base/dd.c:1030) 
[ 98.603381][ T229] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 98.603584][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 98.603807][ T229] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 98.604028][ T229] bus_probe_device (drivers/base/bus.c:537) 
[ 98.604254][ T229] device_add (drivers/base/core.c:3672) 
[ 98.604465][ T229] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 98.604671][ T229] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 98.604913][ T229] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 98.605191][ T229] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 98.605459][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 98.605665][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 98.605900][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 98.606116][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 98.606351][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 98.606519][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 98.606729][ T229] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 98.606962][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 98.607192][ T229] ksys_write (fs/read_write.c:731) 
[ 98.607361][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 98.607581][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 98.607812][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   98.608077][  T229] RIP: 0033:0x7f88097dfb77
[ 98.608304][ T229] 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
[   98.609061][  T229] RSP: 002b:00007ffdcf651eb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   98.609381][  T229] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f88097dfb77
[   98.609705][  T229] RDX: 0000000000000004 RSI: 0000562a071f9330 RDI: 0000000000000001
[   98.610036][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[   98.610392][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000004
[   98.610722][  T229] R13: 00007f880989b760 R14: 0000000000000004 R15: 00007f88098969c0
| [   98.656722][  T229] ------------[ cut here ]------------
| [ 98.657061][ T229] WARNING: CPU: 0 PID: 229 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:10596) 
| [   98.657468][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [   98.658366][  T229] Tainted: [W]=WARN
[   98.658520][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 98.658758][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 98.659009][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  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
[   98.659767][  T229] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[   98.660018][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   98.660395][  T229] RDX: 0000000000000000 RSI: ffff88800b49ac98 RDI: ffff888009a02de8
[   98.660669][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[   98.661035][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[   98.661345][  T229] R13: ffff88800b49a128 R14: ffff88800b49a008 R15: ffff88800b49a000
[   98.661622][  T229] FS:  00007f880969e740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[   98.661943][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   98.662190][  T229] CR2: 00007f67c2632bc4 CR3: 000000000933a001 CR4: 0000000000772ef0
[   98.662469][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   98.662748][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   98.663026][  T229] PKRU: 55555554
[   98.663180][  T229] Call Trace:
[   98.663327][  T229]  <TASK>
[ 98.663434][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 98.663631][ T229] ? __warn (kernel/panic.c:748) 
[ 98.663780][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 98.663970][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 98.664178][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 98.664323][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 98.664513][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 98.664715][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 98.664928][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 98.665516][ T229] ? _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) 
[ 98.665712][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 98.665909][ T229] register_netdevice (net/core/dev.c:11033) 
[ 98.666103][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 98.666315][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 98.666526][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 98.666770][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 98.667030][ T229] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 98.667289][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 98.667482][ T229] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 98.667692][ T229] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 98.667944][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 98.668133][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 98.668350][ T229] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 98.668550][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 98.668771][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 98.668921][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 98.669109][ T229] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 98.669323][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 98.669521][ T229] ksys_write (fs/read_write.c:731) 
[ 98.669665][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 98.669862][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 98.670051][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   98.670293][  T229] RIP: 0033:0x7f88097dfb77
[ 98.670488][ T229] Code: Unable to access opcode bytes at 0x7f88097dfb4d.

Code starting with the faulting instruction
===========================================
[   98.670758][  T229] RSP: 002b:00007ffdcf64fa18 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   98.671048][  T229] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f88097dfb77
[   98.671332][  T229] RDX: 0000000000000002 RSI: 0000562a071f9330 RDI: 0000000000000001
[   98.671611][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[   98.671904][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000002
[   98.672204][  T229] R13: 00007f880989b760 R14: 0000000000000002 R15: 00007f88098969c0
| [  101.333895][  T229] ------------[ cut here ]------------
| [ 101.334217][ T229] WARNING: CPU: 1 PID: 229 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:10596) 
| [  101.334597][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  101.336399][  T229] Tainted: [W]=WARN
[  101.336549][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 101.336783][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 101.337033][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  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
[  101.337788][  T229] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  101.338032][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  101.338407][  T229] RDX: 0000000000000000 RSI: ffff88800ed8ac98 RDI: ffff888009a02de8
[  101.338698][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[  101.338978][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[  101.339344][  T229] R13: ffff88800ed8a128 R14: ffff88800ed8a008 R15: ffff88800ed8a000
[  101.339625][  T229] FS:  00007f880969e740(0000) GS:ffff88802f480000(0000) knlGS:0000000000000000
[  101.339961][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  101.340288][  T229] CR2: 00007ff18286b000 CR3: 000000000933a003 CR4: 0000000000772ef0
[  101.340571][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  101.340853][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  101.341233][  T229] PKRU: 55555554
[  101.341378][  T229] Call Trace:
[  101.341520][  T229]  <TASK>
[ 101.341620][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 101.341809][ T229] ? __warn (kernel/panic.c:748) 
[ 101.341959][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 101.342237][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 101.342435][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 101.342583][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 101.342773][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 101.342983][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 101.343413][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 101.343680][ T229] ? _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) 
[ 101.343881][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 101.344123][ T229] register_netdevice (net/core/dev.c:11033) 
[ 101.344626][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 101.344967][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 101.345493][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 101.345913][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 101.346513][ T229] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 101.346931][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 101.347490][ T229] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 101.347831][ T229] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 101.348436][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 101.348769][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 101.349087][ T229] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 101.349595][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 101.349928][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 101.350087][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 101.350485][ T229] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 101.350696][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 101.350959][ T229] ksys_write (fs/read_write.c:731) 
[ 101.351352][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 101.351684][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 101.352005][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  101.352464][  T229] RIP: 0033:0x7f88097dfb77
[ 101.352780][ T229] 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
[  101.353851][  T229] RSP: 002b:00007ffdcf64fa18 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  101.354348][  T229] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f88097dfb77
[  101.354811][  T229] RDX: 0000000000000002 RSI: 0000562a071f9330 RDI: 0000000000000001
[  101.355294][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[  101.355649][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000002
[  101.355947][  T229] R13: 00007f880989b760 R14: 0000000000000002 R15: 00007f88098969c0
| [  103.701258][  T229] ------------[ cut here ]------------
| [ 103.701600][ T229] WARNING: CPU: 0 PID: 229 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:10596) 
| [  103.702042][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  103.702959][  T229] Tainted: [W]=WARN
[  103.703132][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 103.703422][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 103.703709][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  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
[  103.704483][  T229] RSP: 0018:ffffc90000af7520 EFLAGS: 00010246
[  103.704760][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  103.705082][  T229] RDX: 0000000000000000 RSI: ffff888005972c98 RDI: ffff888009a02e38
[  103.705420][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[  103.705744][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[  103.706167][  T229] R13: ffff888005972128 R14: ffff888005972008 R15: ffff888005972000
[  103.706492][  T229] FS:  00007f880969e740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[  103.706876][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  103.707165][  T229] CR2: 0000562a071f0658 CR3: 000000000933a003 CR4: 0000000000772ef0
[  103.707490][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  103.707815][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  103.708150][  T229] PKRU: 55555554
[  103.708320][  T229] Call Trace:
[  103.708493][  T229]  <TASK>
[ 103.708609][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 103.708831][ T229] ? __warn (kernel/panic.c:748) 
[ 103.709000][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 103.709228][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 103.709454][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 103.709628][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 103.709852][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 103.710090][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 103.710332][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 103.710618][ T229] ? _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) 
[ 103.710847][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 103.711073][ T229] register_netdevice (net/core/dev.c:11033) 
[ 103.711310][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 103.711546][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 103.711782][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 103.712061][ T229] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 103.712242][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 103.712535][ T229] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 103.712836][ T229] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 103.713114][ T229] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 103.713357][ T229] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 103.713634][ T229] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 103.713855][ T229] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 103.714022][ T229] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 103.714260][ T229] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 103.714491][ T229] __driver_probe_device (drivers/base/dd.c:800) 
[ 103.714712][ T229] driver_probe_device (drivers/base/dd.c:830) 
[ 103.714931][ T229] __device_attach_driver (drivers/base/dd.c:959) 
[ 103.715167][ T229] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 103.715442][ T229] bus_for_each_drv (drivers/base/bus.c:462) 
[ 103.715664][ T229] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 103.715884][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 103.716112][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 103.716347][ T229] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 103.716578][ T229] __device_attach (drivers/base/dd.c:1030) 
[ 103.716798][ T229] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 103.717018][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 103.717249][ T229] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 103.717482][ T229] bus_probe_device (drivers/base/bus.c:537) 
[ 103.717714][ T229] device_add (drivers/base/core.c:3672) 
[ 103.717940][ T229] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 103.718170][ T229] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 103.718415][ T229] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 103.718702][ T229] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 103.718989][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 103.719216][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 103.719448][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 103.719669][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 103.719898][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 103.720074][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 103.720308][ T229] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 103.720539][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 103.720770][ T229] ksys_write (fs/read_write.c:731) 
[ 103.720945][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 103.721186][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 103.721412][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  103.721684][  T229] RIP: 0033:0x7f88097dfb77
[ 103.721908][ T229] 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
[  103.722680][  T229] RSP: 002b:00007ffdcf651eb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  103.723014][  T229] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f88097dfb77
[  103.723355][  T229] RDX: 0000000000000004 RSI: 0000562a071f9330 RDI: 0000000000000001
[  103.723685][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[  103.724021][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000004
[  103.724355][  T229] R13: 00007f880989b760 R14: 0000000000000004 R15: 00007f88098969c0
| [  103.758711][  T229] ------------[ cut here ]------------
| [ 103.759028][ T229] WARNING: CPU: 0 PID: 229 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:10596) 
| [  103.759455][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  103.760296][  T229] Tainted: [W]=WARN
[  103.760456][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 103.760711][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 103.760976][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  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
[  103.761713][  T229] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  103.761966][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  103.762277][  T229] RDX: 0000000000000000 RSI: ffff88800b32ac98 RDI: ffff888009a02de8
[  103.762585][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[  103.762883][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[  103.763191][  T229] R13: ffff88800b32a128 R14: ffff88800b32a008 R15: ffff88800b32a000
[  103.763489][  T229] FS:  00007f880969e740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[  103.763836][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  103.764095][  T229] CR2: 00007ffdcf64efd0 CR3: 000000000933a003 CR4: 0000000000772ef0
[  103.764402][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  103.764798][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  103.765095][  T229] PKRU: 55555554
[  103.765265][  T229] Call Trace:
[  103.765419][  T229]  <TASK>
[ 103.765526][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 103.765727][ T229] ? __warn (kernel/panic.c:748) 
[ 103.765880][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 103.766086][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 103.766306][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 103.766461][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 103.766664][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 103.766877][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 103.767084][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 103.767346][ T229] ? _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) 
[ 103.767551][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 103.767754][ T229] register_netdevice (net/core/dev.c:11033) 
[ 103.767959][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 103.768183][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 103.768407][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 103.768664][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 103.768939][ T229] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 103.769210][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 103.769413][ T229] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 103.769628][ T229] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 103.769886][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 103.770085][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 103.770296][ T229] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 103.770502][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 103.770708][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 103.770869][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 103.771079][ T229] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 103.771288][ T229] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 103.771499][ T229] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 103.771709][ T229] ksys_write (fs/read_write.c:731) 
[ 103.771863][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 103.772062][ T229] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 103.772283][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 103.772487][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  103.772738][  T229] RIP: 0033:0x7f88097dfb77
[ 103.772944][ T229] 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
[  103.773639][  T229] RSP: 002b:00007ffdcf64f558 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  103.773946][  T229] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f88097dfb77
[  103.774251][  T229] RDX: 0000000000000002 RSI: 0000562a071f9330 RDI: 0000000000000001
[  103.774545][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[  103.774836][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000002
[  103.775131][  T229] R13: 00007f880989b760 R14: 0000000000000002 R15: 00007f88098969c0
| [  105.969727][  T229] ------------[ cut here ]------------
| [ 105.969958][ T229] WARNING: CPU: 3 PID: 229 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:10596) 
| [  105.970364][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  105.971131][  T229] Tainted: [W]=WARN
[  105.971289][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 105.971526][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 105.971767][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  105.972446][  T229] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  105.972690][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  105.972975][  T229] RDX: 0000000000000000 RSI: ffff88800b2bac98 RDI: ffff888009a02de8
[  105.973262][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[  105.973544][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[  105.973829][  T229] R13: ffff88800b2ba128 R14: ffff88800b2ba008 R15: ffff88800b2ba000
[  105.974106][  T229] FS:  00007f880969e740(0000) GS:ffff88802f580000(0000) knlGS:0000000000000000
[  105.974442][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  105.974684][  T229] CR2: 00007ffdcf64eff8 CR3: 000000000933a004 CR4: 0000000000772ef0
[  105.974975][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  105.975267][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  105.975560][  T229] PKRU: 55555554
[  105.975702][  T229] Call Trace:
[  105.975845][  T229]  <TASK>
[ 105.975945][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 105.976173][ T229] ? __warn (kernel/panic.c:748) 
[ 105.976323][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 105.976517][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 105.976713][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 105.976859][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 105.977047][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 105.977268][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 105.977468][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 105.977711][ T229] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 105.977906][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 105.978103][ T229] register_netdevice (net/core/dev.c:11033) 
[ 105.978312][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 105.978535][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 105.978743][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 105.978988][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 105.979260][ T229] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 105.979507][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 105.979705][ T229] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 105.979903][ T229] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 105.980156][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 105.980347][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 105.980535][ T229] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 105.980728][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 105.980924][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 105.981081][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 105.981287][ T229] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 105.981489][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 105.981687][ T229] ksys_write (fs/read_write.c:731) 
[ 105.981833][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 105.982030][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 105.982260][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  105.982494][  T229] RIP: 0033:0x7f88097dfb77
[ 105.982693][ T229] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  105.983363][  T229] RSP: 002b:00007ffdcf64f558 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  105.983648][  T229] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f88097dfb77
[  105.983929][  T229] RDX: 0000000000000002 RSI: 0000562a071f9330 RDI: 0000000000000001
[  105.984219][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[  105.984501][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000002
[  105.984775][  T229] R13: 00007f880989b760 R14: 0000000000000002 R15: 00007f88098969c0
| [  107.963647][  T229] ------------[ cut here ]------------
| [ 107.964040][ T229] WARNING: CPU: 1 PID: 229 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:10596) 
| [  107.964562][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  107.965422][  T229] Tainted: [W]=WARN
[  107.965579][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 107.965840][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 107.966104][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  107.966828][  T229] RSP: 0018:ffffc90000af7520 EFLAGS: 00010246
[  107.967089][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  107.967414][  T229] RDX: 0000000000000000 RSI: ffff88800c22ac98 RDI: ffff888009a02e38
[  107.967720][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[  107.968023][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[  107.968348][  T229] R13: ffff88800c22a128 R14: ffff88800c22a008 R15: ffff88800c22a000
[  107.968662][  T229] FS:  00007f880969e740(0000) GS:ffff88802f480000(0000) knlGS:0000000000000000
[  107.969018][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  107.969290][  T229] CR2: 0000562a071f0658 CR3: 000000000933a004 CR4: 0000000000772ef0
[  107.969606][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  107.969912][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  107.970229][  T229] PKRU: 55555554
[  107.970385][  T229] Call Trace:
[  107.970540][  T229]  <TASK>
[ 107.970646][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 107.970853][ T229] ? __warn (kernel/panic.c:748) 
[ 107.971019][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 107.971240][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 107.971455][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 107.971614][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 107.971822][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 107.972049][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 107.972279][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 107.972548][ T229] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 107.972761][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 107.973003][ T229] register_netdevice (net/core/dev.c:11033) 
[ 107.973227][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 107.973448][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 107.973668][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 107.973930][ T229] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 107.974091][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 107.974379][ T229] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 107.974641][ T229] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 107.974909][ T229] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 107.975129][ T229] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 107.975403][ T229] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 107.975616][ T229] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 107.975775][ T229] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 107.975996][ T229] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 107.976225][ T229] __driver_probe_device (drivers/base/dd.c:800) 
[ 107.976437][ T229] driver_probe_device (drivers/base/dd.c:830) 
[ 107.976646][ T229] __device_attach_driver (drivers/base/dd.c:959) 
[ 107.976856][ T229] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 107.977109][ T229] bus_for_each_drv (drivers/base/bus.c:462) 
[ 107.977332][ T229] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 107.977547][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 107.977759][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 107.977968][ T229] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 107.978196][ T229] __device_attach (drivers/base/dd.c:1030) 
[ 107.978417][ T229] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 107.978623][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 107.978832][ T229] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 107.979050][ T229] bus_probe_device (drivers/base/bus.c:537) 
[ 107.979277][ T229] device_add (drivers/base/core.c:3672) 
[ 107.979494][ T229] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 107.979700][ T229] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 107.979920][ T229] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 107.980201][ T229] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 107.980473][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 107.980683][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 107.980897][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 107.981106][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 107.981332][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 107.981501][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 107.981711][ T229] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 107.981928][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 107.982163][ T229] ksys_write (fs/read_write.c:731) 
[ 107.982322][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 107.982543][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 107.982755][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  107.983011][  T229] RIP: 0033:0x7f88097dfb77
[ 107.983240][ T229] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  107.983955][  T229] RSP: 002b:00007ffdcf651eb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  107.984279][  T229] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f88097dfb77
[  107.984586][  T229] RDX: 0000000000000004 RSI: 0000562a071f9330 RDI: 0000000000000001
[  107.984894][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[  107.985211][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000004
[  107.985516][  T229] R13: 00007f880989b760 R14: 0000000000000004 R15: 00007f88098969c0
| [  108.023685][  T229] ------------[ cut here ]------------
| [ 108.024016][ T229] WARNING: CPU: 1 PID: 229 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:10596) 
| [  108.024555][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  108.025685][  T229] Tainted: [W]=WARN
[  108.025852][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 108.026084][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 108.026452][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  108.027088][  T229] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  108.027439][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  108.027715][  T229] RDX: 0000000000000000 RSI: ffff888004f42c98 RDI: ffff888009a02de8
[  108.027990][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[  108.028355][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[  108.028634][  T229] R13: ffff888004f42128 R14: ffff888004f42008 R15: ffff888004f42000
[  108.028906][  T229] FS:  00007f880969e740(0000) GS:ffff88802f480000(0000) knlGS:0000000000000000
[  108.029353][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  108.029586][  T229] CR2: 0000562a071f0658 CR3: 000000000933a004 CR4: 0000000000772ef0
[  108.029862][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  108.030318][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  108.030592][  T229] PKRU: 55555554
[  108.030733][  T229] Call Trace:
[  108.030873][  T229]  <TASK>
[ 108.030969][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 108.031323][ T229] ? __warn (kernel/panic.c:748) 
[ 108.031470][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 108.031663][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 108.031856][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 108.031999][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 108.032374][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 108.032576][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 108.032770][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 108.033006][ T229] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 108.033331][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 108.033524][ T229] register_netdevice (net/core/dev.c:11033) 
[ 108.033714][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 108.033911][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 108.034113][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 108.034371][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 108.034630][ T229] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 108.034871][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 108.035059][ T229] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 108.035267][ T229] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 108.035508][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 108.035691][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 108.035880][ T229] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 108.036076][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 108.036279][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 108.036427][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 108.036623][ T229] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 108.036821][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 108.037016][ T229] ksys_write (fs/read_write.c:731) 
[ 108.037166][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 108.037370][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 108.037558][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  108.037786][  T229] RIP: 0033:0x7f88097dfb77
[ 108.037976][ T229] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  108.038640][  T229] RSP: 002b:00007ffdcf64f7b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  108.038922][  T229] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f88097dfb77
[  108.039208][  T229] RDX: 0000000000000002 RSI: 0000562a071f9330 RDI: 0000000000000001
[  108.039482][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[  108.039757][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000002
[  108.040033][  T229] R13: 00007f880989b760 R14: 0000000000000002 R15: 00007f88098969c0
| [  110.072862][  T229] ------------[ cut here ]------------
| [ 110.073215][ T229] WARNING: CPU: 3 PID: 229 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:10596) 
| [  110.073598][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  110.074380][  T229] Tainted: [W]=WARN
[  110.074527][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 110.074760][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 110.075003][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  110.075670][  T229] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  110.075908][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  110.076196][  T229] RDX: 0000000000000000 RSI: ffff88800b4b2c98 RDI: ffff888009a02de8
[  110.076476][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[  110.076752][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[  110.077034][  T229] R13: ffff88800b4b2128 R14: ffff88800b4b2008 R15: ffff88800b4b2000
[  110.077324][  T229] FS:  00007f880969e740(0000) GS:ffff88802f580000(0000) knlGS:0000000000000000
[  110.077651][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  110.077888][  T229] CR2: 0000562a0720e018 CR3: 000000000933a006 CR4: 0000000000772ef0
[  110.078176][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  110.078468][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  110.078752][  T229] PKRU: 55555554
[  110.078895][  T229] Call Trace:
[  110.079039][  T229]  <TASK>
[ 110.079147][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 110.079339][ T229] ? __warn (kernel/panic.c:748) 
[ 110.079485][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 110.079677][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 110.079874][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 110.080018][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 110.080221][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 110.080425][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 110.080628][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 110.080873][ T229] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 110.081071][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 110.081279][ T229] register_netdevice (net/core/dev.c:11033) 
[ 110.081477][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 110.081678][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 110.081884][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 110.082128][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 110.082401][ T229] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 110.082658][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 110.082850][ T229] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 110.083051][ T229] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 110.083304][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 110.083492][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 110.083680][ T229] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 110.083873][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 110.084075][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 110.084238][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 110.084430][ T229] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 110.084631][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 110.084829][ T229] ksys_write (fs/read_write.c:731) 
[ 110.084975][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 110.085185][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 110.085379][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  110.085611][  T229] RIP: 0033:0x7f88097dfb77
[ 110.085803][ T229] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  110.086463][  T229] RSP: 002b:00007ffdcf64f7b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  110.086750][  T229] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f88097dfb77
[  110.087030][  T229] RDX: 0000000000000002 RSI: 0000562a071f9330 RDI: 0000000000000001
[  110.087316][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[  110.087595][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000002
[  110.087914][  T229] R13: 00007f880989b760 R14: 0000000000000002 R15: 00007f88098969c0
| [  111.876968][  T229] ------------[ cut here ]------------
| [ 111.877418][ T229] WARNING: CPU: 2 PID: 229 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:10596) 
| [  111.877907][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  111.878874][  T229] Tainted: [W]=WARN
[  111.879055][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 111.879366][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 111.879662][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  111.880430][  T229] RSP: 0018:ffffc90000af7520 EFLAGS: 00010246
[  111.880719][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  111.881069][  T229] RDX: 0000000000000000 RSI: ffff88800b49ac98 RDI: ffff888009a02e38
[  111.882639][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[  111.883126][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[  111.883522][  T229] R13: ffff88800b49a128 R14: ffff88800b49a008 R15: ffff88800b49a000
[  111.883891][  T229] FS:  00007f880969e740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  111.884286][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  111.884590][  T229] CR2: 0000562a071d0000 CR3: 000000000933a002 CR4: 0000000000772ef0
[  111.884939][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  111.885293][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  111.885635][  T229] PKRU: 55555554
[  111.885817][  T229] Call Trace:
[  111.886003][  T229]  <TASK>
[ 111.886132][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 111.886385][ T229] ? __warn (kernel/panic.c:748) 
[ 111.886572][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 111.886807][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 111.887044][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 111.887368][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 111.887610][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 111.887884][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 111.888158][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 111.888466][ T229] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 111.888715][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 111.888962][ T229] register_netdevice (net/core/dev.c:11033) 
[ 111.889212][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 111.889468][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 111.889721][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 111.890015][ T229] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 111.890213][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 111.890514][ T229] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 111.890925][ T229] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 111.891226][ T229] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 111.891471][ T229] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 111.891750][ T229] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 111.891983][ T229] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 111.892167][ T229] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 111.892399][ T229] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 111.892641][ T229] __driver_probe_device (drivers/base/dd.c:800) 
[ 111.892866][ T229] driver_probe_device (drivers/base/dd.c:830) 
[ 111.893086][ T229] __device_attach_driver (drivers/base/dd.c:959) 
[ 111.893323][ T229] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 111.893591][ T229] bus_for_each_drv (drivers/base/bus.c:462) 
[ 111.893820][ T229] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 111.894037][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 111.894292][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 111.894559][ T229] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 111.894786][ T229] __device_attach (drivers/base/dd.c:1030) 
[ 111.895020][ T229] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 111.895269][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 111.895499][ T229] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 111.895732][ T229] bus_probe_device (drivers/base/bus.c:537) 
[ 111.895957][ T229] device_add (drivers/base/core.c:3672) 
[ 111.896204][ T229] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 111.896425][ T229] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 111.896658][ T229] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 111.896947][ T229] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 111.897242][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 111.897464][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 111.897699][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 111.897940][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 111.898178][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 111.898369][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 111.898595][ T229] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 111.898824][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 111.899052][ T229] ksys_write (fs/read_write.c:731) 
[ 111.899239][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 111.899483][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 111.899707][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  111.900000][  T229] RIP: 0033:0x7f88097dfb77
[ 111.900239][ T229] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  111.900994][  T229] RSP: 002b:00007ffdcf651eb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  111.901347][  T229] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f88097dfb77
[  111.901675][  T229] RDX: 0000000000000004 RSI: 0000562a071f9330 RDI: 0000000000000001
[  111.902002][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[  111.902329][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000004
[  111.902656][  T229] R13: 00007f880989b760 R14: 0000000000000004 R15: 00007f88098969c0
| [  112.017161][  T229] ------------[ cut here ]------------
| [ 112.017490][ T229] WARNING: CPU: 3 PID: 229 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:10596) 
| [  112.017928][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  112.018773][  T229] Tainted: [W]=WARN
[  112.018926][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 112.019190][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 112.019451][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  112.020195][  T229] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  112.020455][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  112.020762][  T229] RDX: 0000000000000000 RSI: ffff88800ed8ac98 RDI: ffff888009a02de8
[  112.021064][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[  112.021368][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[  112.021669][  T229] R13: ffff88800ed8a128 R14: ffff88800ed8a008 R15: ffff88800ed8a000
[  112.021973][  T229] FS:  00007f880969e740(0000) GS:ffff88802f580000(0000) knlGS:0000000000000000
[  112.022336][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  112.022589][  T229] CR2: 00007f8809852733 CR3: 000000000933a006 CR4: 0000000000772ef0
[  112.023062][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  112.023379][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  112.023681][  T229] PKRU: 55555554
[  112.023836][  T229] Call Trace:
[  112.023990][  T229]  <TASK>
[ 112.024096][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 112.024308][ T229] ? __warn (kernel/panic.c:748) 
[ 112.024465][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 112.024687][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 112.024928][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 112.025086][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 112.025304][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 112.025523][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 112.025739][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 112.026021][ T229] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 112.026250][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 112.026459][ T229] register_netdevice (net/core/dev.c:11033) 
[ 112.026674][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 112.026888][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 112.027105][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 112.027379][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 112.027665][ T229] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 112.027932][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 112.028148][ T229] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 112.028371][ T229] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 112.028633][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 112.028834][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 112.029037][ T229] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 112.029266][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 112.029475][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 112.029635][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 112.029865][ T229] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 112.030069][ T229] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 112.030288][ T229] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 112.030497][ T229] ksys_write (fs/read_write.c:731) 
[ 112.030661][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 112.030862][ T229] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 112.031078][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 112.031295][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  112.031549][  T229] RIP: 0033:0x7f88097dfb77
[ 112.031756][ T229] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  112.032466][  T229] RSP: 002b:00007ffdcf651eb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  112.032769][  T229] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f88097dfb77
[  112.033066][  T229] RDX: 0000000000000002 RSI: 0000562a071f9330 RDI: 0000000000000001
[  112.033374][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[  112.033680][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000002
[  112.034008][  T229] R13: 00007f880989b760 R14: 0000000000000002 R15: 00007f88098969c0
| [  112.624060][  T229] ------------[ cut here ]------------
| [ 112.624329][ T229] WARNING: CPU: 3 PID: 229 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:10596) 
| [  112.624743][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  112.625588][  T229] Tainted: [W]=WARN
[  112.625747][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 112.626003][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 112.626280][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  112.626966][  T229] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  112.627232][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  112.627533][  T229] RDX: 0000000000000000 RSI: ffff888005972c98 RDI: ffff888009a02de8
[  112.627830][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[  112.628127][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[  112.628445][  T229] R13: ffff888005972128 R14: ffff888005972008 R15: ffff888005972000
[  112.628751][  T229] FS:  00007f880969e740(0000) GS:ffff88802f580000(0000) knlGS:0000000000000000
[  112.629099][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  112.629361][  T229] CR2: 0000562a071f9330 CR3: 000000000933a003 CR4: 0000000000772ef0
[  112.629659][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  112.629958][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  112.630270][  T229] PKRU: 55555554
[  112.630424][  T229] Call Trace:
[  112.630579][  T229]  <TASK>
[ 112.630683][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 112.630905][ T229] ? __warn (kernel/panic.c:748) 
[ 112.631060][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 112.631280][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 112.631498][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 112.631651][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 112.631847][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 112.632061][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 112.632285][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 112.632537][ T229] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 112.632741][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 112.632939][ T229] register_netdevice (net/core/dev.c:11033) 
[ 112.633133][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 112.633343][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 112.633559][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 112.633802][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 112.634060][ T229] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 112.634321][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 112.634510][ T229] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 112.634710][ T229] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 112.634949][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 112.635145][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 112.635334][ T229] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 112.635525][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 112.635722][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 112.635871][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 112.636061][ T229] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 112.636259][ T229] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 112.636458][ T229] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 112.636651][ T229] ksys_write (fs/read_write.c:731) 
[ 112.636795][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 112.636984][ T229] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 112.637193][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 112.637384][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  112.637614][  T229] RIP: 0033:0x7f88097dfb77
[ 112.637809][ T229] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  112.638480][  T229] RSP: 002b:00007ffdcf651eb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  112.638761][  T229] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f88097dfb77
[  112.639035][  T229] RDX: 0000000000000002 RSI: 0000562a071f9330 RDI: 0000000000000001
[  112.639324][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[  112.639607][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000002
[  112.639884][  T229] R13: 00007f880989b760 R14: 0000000000000002 R15: 00007f88098969c0
| [  119.825970][  T229] ------------[ cut here ]------------
| [ 119.826462][ T229] WARNING: CPU: 2 PID: 229 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:10596) 
| [  119.826855][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  119.827676][  T229] Tainted: [W]=WARN
[  119.827840][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 119.828106][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 119.828390][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  119.829065][  T229] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  119.829331][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  119.829625][  T229] RDX: 0000000000000000 RSI: ffff88800b32ac98 RDI: ffff888009a02de8
[  119.829919][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[  119.830274][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[  119.830610][  T229] R13: ffff88800b32a128 R14: ffff88800b32a008 R15: ffff88800b32a000
[  119.830916][  T229] FS:  00007f880969e740(0000) GS:ffff88802f500000(0000) knlGS:0000000000000000
[  119.831270][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  119.831524][  T229] CR2: 0000562a071dc6c0 CR3: 000000000933a001 CR4: 0000000000772ef0
[  119.831819][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  119.832113][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  119.832422][  T229] PKRU: 55555554
[  119.832583][  T229] Call Trace:
[  119.832737][  T229]  <TASK>
[ 119.832876][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 119.833086][ T229] ? __warn (kernel/panic.c:748) 
[ 119.833262][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 119.833484][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 119.833706][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 119.833868][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 119.834089][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 119.834360][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 119.834593][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 119.834860][ T229] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 119.835075][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 119.835311][ T229] register_netdevice (net/core/dev.c:11033) 
[ 119.835527][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 119.835740][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 119.835965][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 119.836263][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 119.836546][ T229] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 119.836827][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 119.837049][ T229] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 119.837275][ T229] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 119.837533][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 119.837735][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 119.837968][ T229] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 119.838220][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 119.838469][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 119.838647][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 119.838860][ T229] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 119.839089][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 119.839316][ T229] ksys_write (fs/read_write.c:731) 
[ 119.839474][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 119.839684][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 119.839893][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  119.840169][  T229] RIP: 0033:0x7f88097dfb77
[ 119.840400][ T229] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  119.841084][  T229] RSP: 002b:00007ffdcf651eb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  119.841397][  T229] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f88097dfb77
[  119.841697][  T229] RDX: 0000000000000002 RSI: 0000562a071f9330 RDI: 0000000000000001
[  119.841989][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[  119.842318][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000002
[  119.842608][  T229] R13: 00007f880989b760 R14: 0000000000000002 R15: 00007f88098969c0
| [  122.013845][  T229] ------------[ cut here ]------------
| [ 122.014272][ T229] WARNING: CPU: 0 PID: 229 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:10596) 
| [  122.014687][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  122.015535][  T229] Tainted: [W]=WARN
[  122.015697][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 122.015961][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 122.016236][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  122.016954][  T229] RSP: 0018:ffffc90000af7520 EFLAGS: 00010246
[  122.017225][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  122.017540][  T229] RDX: 0000000000000000 RSI: ffff88800b2bac98 RDI: ffff888009a02e38
[  122.017847][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[  122.018172][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[  122.018497][  T229] R13: ffff88800b2ba128 R14: ffff88800b2ba008 R15: ffff88800b2ba000
[  122.018923][  T229] FS:  00007f880969e740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[  122.019363][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  122.019625][  T229] CR2: 0000562a071d5cdc CR3: 000000000933a003 CR4: 0000000000772ef0
[  122.019939][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  122.020258][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  122.020570][  T229] PKRU: 55555554
[  122.020726][  T229] Call Trace:
[  122.020882][  T229]  <TASK>
[ 122.020993][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 122.021211][ T229] ? __warn (kernel/panic.c:748) 
[ 122.021373][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 122.021591][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 122.021811][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 122.021971][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 122.022194][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 122.022420][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 122.022638][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 122.022902][ T229] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 122.023120][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 122.023345][ T229] register_netdevice (net/core/dev.c:11033) 
[ 122.023559][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 122.023788][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 122.024011][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 122.024286][ T229] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 122.024450][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 122.024748][ T229] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 122.025014][ T229] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 122.025290][ T229] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 122.025510][ T229] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 122.025770][ T229] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 122.025986][ T229] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 122.026169][ T229] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 122.026392][ T229] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 122.026610][ T229] __driver_probe_device (drivers/base/dd.c:800) 
[ 122.026826][ T229] driver_probe_device (drivers/base/dd.c:830) 
[ 122.027040][ T229] __device_attach_driver (drivers/base/dd.c:959) 
[ 122.027262][ T229] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 122.027519][ T229] bus_for_each_drv (drivers/base/bus.c:462) 
[ 122.027728][ T229] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 122.027936][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 122.028158][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 122.028373][ T229] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 122.028594][ T229] __device_attach (drivers/base/dd.c:1030) 
[ 122.028801][ T229] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 122.029005][ T229] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 122.029222][ T229] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 122.029445][ T229] bus_probe_device (drivers/base/bus.c:537) 
[ 122.029655][ T229] device_add (drivers/base/core.c:3672) 
[ 122.029867][ T229] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 122.030072][ T229] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 122.030298][ T229] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 122.030569][ T229] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 122.030862][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 122.031070][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 122.031294][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 122.031513][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 122.031752][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 122.031917][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 122.032133][ T229] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 122.032367][ T229] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 122.032590][ T229] ksys_write (fs/read_write.c:731) 
[ 122.032750][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 122.032969][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 122.033190][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  122.033456][  T229] RIP: 0033:0x7f88097dfb77
[ 122.033680][ T229] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  122.034417][  T229] RSP: 002b:00007ffdcf651eb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  122.034770][  T229] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f88097dfb77
[  122.035088][  T229] RDX: 0000000000000004 RSI: 0000562a071f9330 RDI: 0000000000000001
[  122.035406][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[  122.035717][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000004
[  122.036022][  T229] R13: 00007f880989b760 R14: 0000000000000004 R15: 00007f88098969c0
| [  122.156537][  T229] ------------[ cut here ]------------
| [ 122.156842][ T229] WARNING: CPU: 0 PID: 229 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:10596) 
| [  122.157311][  T229] Modules linked in: geneve netdevsim vxlan ip6_udp_tunnel udp_tunnel [last unloaded: netdevsim]
| [  122.158074][  T229] Tainted: [W]=WARN
[  122.158228][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 122.158485][ T229] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 122.158725][ T229] Code: 00 e8 b3 48 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 b8 56 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:	b3 48                	mov    $0x48,%bl
   4:	fe                   	(bad)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 b8 56 78 00       	call   0x7856d9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  122.159392][  T229] RSP: 0018:ffffc90000af7910 EFLAGS: 00010246
[  122.159630][  T229] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  122.159909][  T229] RDX: 0000000000000000 RSI: ffff888004f42c98 RDI: ffff888009a02de8
[  122.160202][  T229] RBP: ffffffffa2124440 R08: 0000000000000000 R09: fffffbfff3ffd844
[  122.160479][  T229] R10: ffffffff9ffec227 R11: ffff888009a02300 R12: 0000000000000000
[  122.160757][  T229] R13: ffff888004f42128 R14: ffff888004f42008 R15: ffff888004f42000
[  122.161045][  T229] FS:  00007f880969e740(0000) GS:ffff88802f400000(0000) knlGS:0000000000000000
[  122.161377][  T229] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  122.161755][  T229] CR2: 00007f8809852733 CR3: 000000000933a003 CR4: 0000000000772ef0
[  122.162034][  T229] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  122.162329][  T229] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  122.162606][  T229] PKRU: 55555554
[  122.162749][  T229] Call Trace:
[  122.162889][  T229]  <TASK>
[ 122.162987][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 122.163190][ T229] ? __warn (kernel/panic.c:748) 
[ 122.163335][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 122.163529][ T229] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 122.163723][ T229] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 122.163868][ T229] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 122.164056][ T229] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 122.164263][ T229] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 122.164468][ T229] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[ 122.164707][ T229] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 122.164907][ T229] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 122.165099][ T229] register_netdevice (net/core/dev.c:11033) 
[ 122.165301][ T229] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[ 122.165501][ T229] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 122.165701][ T229] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 122.165949][ T229] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 122.166223][ T229] nsim_drv_port_add (drivers/net/netdevsim/dev.c:1714) netdevsim 
[ 122.166466][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 122.166655][ T229] new_port_store (drivers/net/netdevsim/bus.c:79) netdevsim 
[ 122.166859][ T229] ? __pfx_new_port_store (drivers/net/netdevsim/bus.c:67) netdevsim 
[ 122.167099][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 122.167294][ T229] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 122.167483][ T229] ? sysfs_kf_write (fs/sysfs/file.c:133) 
[ 122.167679][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 122.167881][ T229] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 122.168049][ T229] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 122.168267][ T229] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 122.168457][ T229] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 122.168654][ T229] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 122.168854][ T229] ksys_write (fs/read_write.c:731) 
[ 122.169008][ T229] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 122.169206][ T229] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 122.169406][ T229] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 122.169597][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  122.169830][  T229] RIP: 0033:0x7f88097dfb77
[ 122.170024][ T229] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  122.170684][  T229] RSP: 002b:00007ffdcf651eb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  122.170973][  T229] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f88097dfb77
[  122.171262][  T229] RDX: 0000000000000002 RSI: 0000562a071f9330 RDI: 0000000000000001
[  122.171549][  T229] RBP: 0000562a071f9330 R08: 0000000000000000 R09: 00007f88098524e0
[  122.171826][  T229] R10: 00007f88098523e0 R11: 0000000000000246 R12: 0000000000000002


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