======================================
| 0
| xx__-> [  164.956963][ T2343] ------------[ cut here ]------------
| [ 164.957421][ T2343] WARNING: CPU: 0 PID: 2343 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  164.957878][ T2343] Modules linked in: netdevsim psample act_mirred act_tunnel_key cls_flower bareudp mpls_gso mpls_iptunnel mpls_router sch_ingress pktgen xt_conntrack nf_conntrack nf_defrag_ipv4 nft_compat nf_tables nf_defrag_ipv6
[  164.959147][ T2343] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 164.959428][ T2343] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 164.959715][ T2343] Code: 00 e8 d3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 3b 99 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:	d3 48 fe             	rorl   %cl,-0x2(%rax)
   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 d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 3b 99 00       	call   0x993bb9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  164.960512][ T2343] RSP: 0018:ffffc90000b77528 EFLAGS: 00010246
[  164.960795][ T2343] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  164.961135][ T2343] RDX: 0000000000000000 RSI: ffff888009a52cd0 RDI: ffff88800de9d0f8
[  164.961469][ T2343] RBP: ffffffffaa253580 R08: 0000000000000000 R09: fffffbfff5002504
[  164.961804][ T2343] R10: ffffffffa8012827 R11: ffff88800de9c5c0 R12: 0000000000000000
[  164.962144][ T2343] R13: ffff888009a52130 R14: ffff888009a52008 R15: ffff888009a52000
[  164.962473][ T2343] FS:  00007f5282e7b1c0(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
[  164.962856][ T2343] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  164.963149][ T2343] CR2: 00007f212bd0f6f0 CR3: 000000000be4a003 CR4: 0000000000772ef0
[  164.963495][ T2343] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  164.963970][ T2343] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  164.964304][ T2343] PKRU: 55555554
[  164.964475][ T2343] Call Trace:
[  164.964643][ T2343]  <TASK>
[ 164.964764][ T2343] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 164.964996][ T2343] ? __warn (kernel/panic.c:748) 
[ 164.965165][ T2343] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 164.965398][ T2343] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 164.965624][ T2343] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 164.965796][ T2343] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 164.966030][ T2343] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 164.966265][ T2343] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 164.966493][ T2343] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 164.966728][ T2343] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 164.967013][ T2343] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 164.967235][ T2343] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 164.967458][ T2343] register_netdevice (net/core/dev.c:11003) 
[ 164.967687][ T2343] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 164.967904][ T2343] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 164.968142][ T2343] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 164.968377][ T2343] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 164.968653][ T2343] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 164.968819][ T2343] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 164.969112][ T2343] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 164.969396][ T2343] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 164.969674][ T2343] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 164.969903][ T2343] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 164.970209][ T2343] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 164.970433][ T2343] ? 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)) 
[ 164.970600][ T2343] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 164.970832][ T2343] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 164.971071][ T2343] __driver_probe_device (drivers/base/dd.c:800) 
[ 164.971296][ T2343] driver_probe_device (drivers/base/dd.c:830) 
[ 164.971518][ T2343] __device_attach_driver (drivers/base/dd.c:959) 
[ 164.971742][ T2343] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 164.972020][ T2343] bus_for_each_drv (drivers/base/bus.c:462) 
[ 164.972245][ T2343] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 164.972463][ T2343] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 164.972689][ T2343] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 164.972910][ T2343] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 164.973150][ T2343] __device_attach (drivers/base/dd.c:1030) 
[ 164.973373][ T2343] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 164.973591][ T2343] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 164.973811][ T2343] ? 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) 
[ 164.974050][ T2343] bus_probe_device (drivers/base/bus.c:537) 
[ 164.974277][ T2343] device_add (drivers/base/core.c:3672) 
[ 164.974500][ T2343] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 164.974718][ T2343] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 164.974953][ T2343] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 164.975247][ T2343] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 164.975535][ T2343] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 164.975753][ T2343] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 164.975993][ T2343] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 164.976210][ T2343] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 164.976436][ T2343] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 164.976612][ T2343] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 164.976836][ T2343] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 164.977060][ T2343] ? 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) 
[ 164.977288][ T2343] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 164.977520][ T2343] ksys_write (fs/read_write.c:731) 
[ 164.977688][ T2343] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 164.977907][ T2343] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 164.978147][ T2343] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 164.978373][ T2343] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  164.978643][ T2343] RIP: 0033:0x7f5283095b77
[ 164.978873][ T2343] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  164.979652][ T2343] RSP: 002b:00007ffd8e8e3f58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  164.979996][ T2343] RAX: ffffffffffffffda RBX: 00007f5282e7b140 RCX: 00007f5283095b77
[  164.980337][ T2343] RDX: 0000000000000009 RSI: 000055590927f1d0 RDI: 0000000000000006
[  164.980670][ T2343] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[  164.981008][ T2343] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f5274f32340
[  164.981337][ T2343] R13: 000055590927f1d0 R14: 0000000000000006 R15: 0000555909056900
| [  168.127853][ T2343] ------------[ cut here ]------------
| [ 168.128328][ T2343] WARNING: CPU: 0 PID: 2343 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  168.128771][ T2343] Modules linked in: netdevsim psample act_mirred act_tunnel_key cls_flower bareudp mpls_gso mpls_iptunnel mpls_router sch_ingress pktgen xt_conntrack nf_conntrack nf_defrag_ipv4 nft_compat nf_tables nf_defrag_ipv6
| [  168.130041][ T2343] Tainted: [W]=WARN
[  168.130262][ T2343] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 168.130539][ T2343] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 168.130822][ T2343] Code: 00 e8 d3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 3b 99 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:	d3 48 fe             	rorl   %cl,-0x2(%rax)
   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 d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 3b 99 00       	call   0x993bb9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[  168.131594][ T2343] RSP: 0018:ffffc90000b77528 EFLAGS: 00010246
[  168.131873][ T2343] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  168.132527][ T2343] RDX: 0000000000000000 RSI: ffff888010292cd0 RDI: ffff88800de9d0f8
[  168.132861][ T2343] RBP: ffffffffaa253580 R08: 0000000000000000 R09: fffffbfff5002504
[  168.133199][ T2343] R10: ffffffffa8012827 R11: ffff88800de9c5c0 R12: 0000000000000000
[  168.133525][ T2343] R13: ffff888010292130 R14: ffff888010292008 R15: ffff888010292000
[  168.133855][ T2343] FS:  00007f5282e7b1c0(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
[  168.134262][ T2343] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  168.134540][ T2343] CR2: 00007f212bc20a00 CR3: 000000000be4a003 CR4: 0000000000772ef0
[  168.134867][ T2343] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  168.135208][ T2343] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  168.135533][ T2343] PKRU: 55555554
[  168.135701][ T2343] Call Trace:
[  168.135867][ T2343]  <TASK>
[ 168.135993][ T2343] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 168.136214][ T2343] ? __warn (kernel/panic.c:748) 
[ 168.136384][ T2343] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 168.136607][ T2343] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 168.136833][ T2343] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 168.137013][ T2343] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 168.137238][ T2343] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 168.137475][ T2343] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 168.137705][ T2343] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 168.137938][ T2343] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 168.138231][ T2343] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 168.138459][ T2343] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 168.138685][ T2343] register_netdevice (net/core/dev.c:11003) 
[ 168.138913][ T2343] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 168.139144][ T2343] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 168.139385][ T2343] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 168.139628][ T2343] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 168.139915][ T2343] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 168.140100][ T2343] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 168.140398][ T2343] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 168.140684][ T2343] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 168.140971][ T2343] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 168.141217][ T2343] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 168.141496][ T2343] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 168.141729][ T2343] ? 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)) 
[ 168.141901][ T2343] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 168.142143][ T2343] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 168.142373][ T2343] __driver_probe_device (drivers/base/dd.c:800) 
[ 168.142606][ T2343] driver_probe_device (drivers/base/dd.c:830) 
[ 168.142832][ T2343] __device_attach_driver (drivers/base/dd.c:959) 
[ 168.143066][ T2343] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 168.143335][ T2343] bus_for_each_drv (drivers/base/bus.c:462) 
[ 168.143559][ T2343] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 168.143777][ T2343] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 168.144007][ T2343] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 168.144229][ T2343] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 168.144458][ T2343] __device_attach (drivers/base/dd.c:1030) 
[ 168.144676][ T2343] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 168.144893][ T2343] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 168.145125][ T2343] ? 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) 
[ 168.145355][ T2343] bus_probe_device (drivers/base/bus.c:537) 
[ 168.145577][ T2343] device_add (drivers/base/core.c:3672) 
[ 168.145798][ T2343] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 168.146026][ T2343] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 168.146261][ T2343] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 168.146543][ T2343] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 168.146834][ T2343] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 168.147062][ T2343] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 168.147288][ T2343] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 168.147506][ T2343] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 168.147732][ T2343] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 168.147908][ T2343] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 168.148138][ T2343] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 168.148376][ T2343] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:885) 
[ 168.148657][ T2343] ksys_write (fs/read_write.c:731) 
[ 168.148827][ T2343] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 168.149060][ T2343] ? kernfs_fop_llseek (fs/kernfs/file.c:891) 
[ 168.149289][ T2343] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 168.149510][ T2343] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  168.149782][ T2343] RIP: 0033:0x7f5283095b77
[ 168.150032][ T2343] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[  168.150791][ T2343] RSP: 002b:00007ffd8e8e3ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  168.151130][ T2343] RAX: ffffffffffffffda RBX: 00007f5282e7b140 RCX: 00007f5283095b77
[  168.151466][ T2343] RDX: 000000000000000b RSI: 00005559092830e0 RDI: 0000000000000006
[  168.151791][ T2343] RBP: 000000000000000b R08: 0000000000000000 R09: 0000000000000000
[  168.152131][ T2343] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f5274dbd280
[  168.152459][ T2343] R13: 00005559092830e0 R14: 0000000000000006 R15: 0000555909056900
| [  171.298345][ T2343] ------------[ cut here ]------------
| [ 171.298685][ T2343] WARNING: CPU: 0 PID: 2343 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [  171.299142][ T2343] Modules linked in: netdevsim psample act_mirred act_tunnel_key cls_flower bareudp mpls_gso mpls_iptunnel mpls_router sch_ingress pktgen xt_conntrack nf_conntrack nf_defrag_ipv4 nft_compat nf_tables nf_defrag_ipv6
| [  171.300519][ T2343] Tainted: [W]=WARN
[  171.300686][ T2343] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 171.300963][ T2343] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 171.301261][ T2343] Code: 00 e8 d3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 3b 99 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:	d3 48 fe             	rorl   %cl,-0x2(%rax)
   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 d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 3b 99 00       	call   0x993bb9
  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
[  171.302029][ T2343] RSP: 0018:ffffc90000b77528 EFLAGS: 00010246
[  171.302306][ T2343] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  171.302640][ T2343] RDX: 0000000000000000 RSI: ffff888010872cd0 RDI: ffff88800de9d0f8
[  171.302968][ T2343] RBP: ffffffffaa253580 R08: 0000000000000000 R09: fffffbfff5002504
[  171.303307][ T2343] R10: ffffffffa8012827 R11: ffff88800de9c5c0 R12: 0000000000000000
[  171.303634][ T2343] R13: ffff888010872130 R14: ffff888010872008 R15: ffff888010872000
[  171.303961][ T2343] FS:  00007f5282e7b1c0(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
[  171.304410][ T2343] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  171.304685][ T2343] CR2: 0000555909080900 CR3: 000000000be4a001 CR4: 0000000000772ef0
[  171.305018][ T2343] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  171.305346][ T2343] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  171.305673][ T2343] PKRU: 55555554
[  171.305844][ T2343] Call Trace:
[  171.306022][ T2343]  <TASK>
[ 171.306140][ T2343] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 171.306360][ T2343] ? __warn (kernel/panic.c:748) 
[ 171.306528][ T2343] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 171.306750][ T2343] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 171.306992][ T2343] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 171.307161][ T2343] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 171.307382][ T2343] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 171.307618][ T2343] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 171.307837][ T2343] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 171.308074][ T2343] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 171.308353][ T2343] ? _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) 
[ 171.308581][ T2343] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 171.308806][ T2343] register_netdevice (net/core/dev.c:11003) 
[ 171.309043][ T2343] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 171.309264][ T2343] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 171.309501][ T2343] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 171.309737][ T2343] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 171.310032][ T2343] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 171.310210][ T2343] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 171.310497][ T2343] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 171.310778][ T2343] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 171.311077][ T2343] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 171.311310][ T2343] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 171.311591][ T2343] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 171.311815][ T2343] ? 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)) 
[ 171.311996][ T2343] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 171.312226][ T2343] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 171.312453][ T2343] __driver_probe_device (drivers/base/dd.c:800) 
[ 171.312675][ T2343] driver_probe_device (drivers/base/dd.c:830) 
[ 171.312895][ T2343] __device_attach_driver (drivers/base/dd.c:959) 
[ 171.313132][ T2343] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 171.313402][ T2343] bus_for_each_drv (drivers/base/bus.c:462) 
[ 171.313627][ T2343] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 171.313848][ T2343] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 171.314081][ T2343] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 171.314299][ T2343] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 171.314526][ T2343] __device_attach (drivers/base/dd.c:1030) 
[ 171.314747][ T2343] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 171.314966][ T2343] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 171.315198][ T2343] ? 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) 
[ 171.315426][ T2343] bus_probe_device (drivers/base/bus.c:537) 
[ 171.315653][ T2343] device_add (drivers/base/core.c:3672) 
[ 171.315881][ T2343] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 171.316111][ T2343] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 171.316347][ T2343] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 171.316633][ T2343] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 171.316917][ T2343] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 171.317147][ T2343] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 171.317373][ T2343] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 171.317589][ T2343] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 171.317818][ T2343] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 171.318010][ T2343] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 171.318229][ T2343] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 171.318464][ T2343] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:885) 
[ 171.318748][ T2343] ksys_write (fs/read_write.c:731) 
[ 171.318918][ T2343] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 171.319150][ T2343] ? kernfs_fop_llseek (fs/kernfs/file.c:891) 
[ 171.319383][ T2343] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 171.319607][ T2343] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  171.319881][ T2343] RIP: 0033:0x7f5283095b77
[ 171.320121][ T2343] 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
[  171.320885][ T2343] RSP: 002b:00007ffd8e8e3ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  171.321227][ T2343] RAX: ffffffffffffffda RBX: 00007f5282e7b140 RCX: 00007f5283095b77
[  171.321561][ T2343] RDX: 0000000000000009 RSI: 00005559092830e0 RDI: 0000000000000006
[  171.321889][ T2343] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[  171.322232][ T2343] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f5274dbd280


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