======================================
| 0
| xx__-> [   10.537618][  T227] ------------[ cut here ]------------
| [ 10.537988][ T227] WARNING: CPU: 1 PID: 227 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   10.538431][  T227] Modules linked in: netdevsim
[   10.539211][  T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.539477][ T227] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.539744][ T227] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   10.540480][  T227] RSP: 0018:ffffc90000b37520 EFLAGS: 00010246
[   10.540741][  T227] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.541058][  T227] RDX: 0000000000000000 RSI: ffff888009b6ac98 RDI: ffff88800b84d0f8
[   10.541374][  T227] RBP: ffffffff89f23440 R08: 0000000000000000 R09: fffffbfff0fbd83c
[   10.541686][  T227] R10: ffffffff87dec1e7 R11: ffff88800b84c5c0 R12: 0000000000000000
[   10.541993][  T227] R13: ffff888009b6a128 R14: ffff888009b6a008 R15: ffff888009b6a000
[   10.542432][  T227] FS:  00007fd9daa62740(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   10.542802][  T227] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.543162][  T227] CR2: 0000558b3d82b598 CR3: 000000000a6e6002 CR4: 0000000000772ef0
[   10.543471][  T227] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.543797][  T227] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.544201][  T227] PKRU: 55555554
[   10.544365][  T227] Call Trace:
[   10.544524][  T227]  <TASK>
[ 10.544634][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.544845][ T227] ? __warn (kernel/panic.c:748) 
[ 10.545005][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.545307][ T227] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.545522][ T227] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.545676][ T227] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.545879][ T227] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.546173][ T227] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.546390][ T227] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.546658][ T227] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 10.546868][ T227] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.547095][ T227] register_netdevice (net/core/dev.c:11003) 
[ 10.547310][ T227] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.547530][ T227] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.547757][ T227] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.548015][ T227] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 10.548184][ T227] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.548454][ T227] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.548722][ T227] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 10.548988][ T227] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 10.549216][ T227] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 10.549474][ T227] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 10.549681][ T227] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 10.549835][ T227] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 10.550058][ T227] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 10.550271][ T227] __driver_probe_device (drivers/base/dd.c:800) 
[ 10.550478][ T227] driver_probe_device (drivers/base/dd.c:830) 
[ 10.550696][ T227] __device_attach_driver (drivers/base/dd.c:959) 
[ 10.550901][ T227] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 10.551161][ T227] bus_for_each_drv (drivers/base/bus.c:462) 
[ 10.551369][ T227] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 10.551573][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.551777][ T227] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.551979][ T227] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 10.552208][ T227] __device_attach (drivers/base/dd.c:1030) 
[ 10.552415][ T227] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 10.552622][ T227] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 10.552827][ T227] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 10.553052][ T227] bus_probe_device (drivers/base/bus.c:537) 
[ 10.553262][ T227] device_add (drivers/base/core.c:3672) 
[ 10.553475][ T227] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 10.553680][ T227] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 10.553895][ T227] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 10.554174][ T227] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 10.554442][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.554652][ T227] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 10.554888][ T227] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 10.555110][ T227] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 10.555322][ T227] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 10.555484][ T227] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 10.555692][ T227] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 10.555893][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.556115][ T227] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 10.556331][ T227] ksys_write (fs/read_write.c:731) 
[ 10.556488][ T227] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 10.556691][ T227] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 10.556905][ T227] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.557120][ T227] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.557375][  T227] RIP: 0033:0x7fd9daba3b77
[ 10.557587][ T227] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   10.558313][  T227] RSP: 002b:00007fff4ee80de8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   10.558629][  T227] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fd9daba3b77
[   10.558938][  T227] RDX: 0000000000000007 RSI: 0000558b3d82a590 RDI: 0000000000000001
[   10.559263][  T227] RBP: 0000558b3d82a590 R08: 0000000000000003 R09: 0000000000000077
[   10.559573][  T227] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000007
[   10.559878][  T227] R13: 00007fd9dac5f760 R14: 0000000000000007 R15: 00007fd9dac5a9c0
| [   10.849013][  T248] ------------[ cut here ]------------
| [ 10.849409][ T248] WARNING: CPU: 0 PID: 248 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   10.849839][  T248] Modules linked in: netdevsim
| [   10.850658][  T248] Tainted: [W]=WARN
[   10.850847][  T248] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 10.851123][ T248] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.851396][ T248] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   10.852203][  T248] RSP: 0018:ffffc90000b871e8 EFLAGS: 00010246
[   10.852468][  T248] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   10.852775][  T248] RDX: 0000000000000000 RSI: ffff88800e062c98 RDI: ffff88800250adc0
[   10.853098][  T248] RBP: ffff88800b9f8040 R08: 0000000000000000 R09: fffffbfff0fbd83c
[   10.853409][  T248] R10: ffffffff87dec1e7 R11: ffff88800250a300 R12: 0000000000000000
[   10.853723][  T248] R13: ffff88800e062128 R14: ffff88800e062008 R15: ffff88800e062000
[   10.854029][  T248] FS:  00007f0e2b66a800(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   10.854398][  T248] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   10.854659][  T248] CR2: 00007f0e2b7a9440 CR3: 000000000e208006 CR4: 0000000000772ef0
[   10.854975][  T248] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   10.855299][  T248] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   10.855601][  T248] PKRU: 55555554
[   10.855755][  T248] Call Trace:
[   10.855909][  T248]  <TASK>
[ 10.856015][ T248] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.856240][ T248] ? __warn (kernel/panic.c:748) 
[ 10.856398][ T248] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.856612][ T248] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 10.856839][ T248] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 10.857011][ T248] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 10.857250][ T248] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 10.857487][ T248] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 10.857713][ T248] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 10.857949][ T248] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 10.858242][ T248] ? _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) 
[ 10.858475][ T248] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 10.858708][ T248] register_netdevice (net/core/dev.c:11003) 
[ 10.858934][ T248] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 10.859179][ T248] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 10.859425][ T248] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 10.859716][ T248] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 10.859998][ T248] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 10.860284][ T248] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 10.860554][ T248] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 10.860816][ T248] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 10.861093][ T248] devlink_reload (net/devlink/dev.c:474) 
[ 10.861301][ T248] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 10.861508][ T248] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 10.861721][ T248] ? cap_capable (security/commoncap.c:131) 
[ 10.861929][ T248] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1146 fs/file.c:1160) 
[ 10.862114][ T248] devlink_nl_reload_doit (net/devlink/dev.c:584) 
[ 10.862335][ T248] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 10.862600][ T248] ? __nla_parse (lib/nlattr.c:732) 
[ 10.862820][ T248] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1115) 
[ 10.863051][ T248] ? __pfx_genl_family_rcv_msg_doit (net/netlink/genetlink.c:1088) 
[ 10.863322][ T248] ? cap_capable (security/commoncap.c:131) 
[ 10.863528][ T248] ? validate_chain (kernel/locking/lockdep.c:3799 kernel/locking/lockdep.c:3819 kernel/locking/lockdep.c:3874) 
[ 10.863750][ T248] genl_family_rcv_msg (net/netlink/genetlink.c:1195) 
[ 10.863962][ T248] ? __pfx_genl_family_rcv_msg (net/netlink/genetlink.c:1160) 
[ 10.864184][ T248] ? __pfx_devlink_nl_pre_doit_dev_lock (net/devlink/netlink.c:257) 
[ 10.864441][ T248] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 10.864695][ T248] ? __pfx_devlink_nl_post_doit_dev_lock (net/devlink/netlink.c:288) 
[ 10.864968][ T248] genl_rcv_msg (net/netlink/genetlink.c:65 net/netlink/genetlink.c:1211) 
[ 10.865194][ T248] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 10.865401][ T248] ? __pfx_genl_rcv_msg (net/netlink/genetlink.c:1201) 
[ 10.865615][ T248] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 10.865837][ T248] ? genl_rcv (net/netlink/genetlink.c:1219) 
[ 10.865999][ T248] ? __pfx_down_read (kernel/locking/rwsem.c:1522) 
[ 10.866224][ T248] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 10.866444][ T248] genl_rcv (net/netlink/genetlink.c:1220) 
[ 10.866604][ T248] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 10.866815][ T248] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 10.867021][ T248] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 10.867255][ T248] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 10.867468][ T248] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 10.867686][ T248] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 10.867898][ T248] ? __might_fault (mm/memory.c:6851 mm/memory.c:6844) 
[ 10.868127][ T248] __sys_sendto (net/socket.c:709 net/socket.c:724 net/socket.c:2178) 
[ 10.868344][ T248] ? __pfx___sys_sendto (net/socket.c:2145) 
[ 10.868554][ T248] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 10.868783][ T248] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 10.869021][ T248] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 10.869272][ T248] ? __rseq_handle_notify_resume (kernel/rseq.c:420) 
[ 10.869533][ T248] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 10.869747][ T248] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:403) 
[ 10.870010][ T248] ? __pfx___x64_sys_openat (fs/open.c:1454) 
[ 10.870236][ T248] __x64_sys_sendto (net/socket.c:2181) 
[ 10.870450][ T248] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 10.870742][ T248] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 10.870960][ T248] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   10.871225][  T248] RIP: 0033:0x7f0e2b876a4a
[ 10.871443][ T248] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89
All code
========
   0:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   4:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   b:	eb b8                	jmp    0xffffffffffffffc5
   d:	0f 1f 00             	nopl   (%rax)
  10:	f3 0f 1e fa          	endbr64
  14:	41 89 ca             	mov    %ecx,%r10d
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 15                	jne    0x38
  23:	b8 2c 00 00 00       	mov    $0x2c,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 7e                	ja     0xb0
  32:	c3                   	ret
  33:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  38:	41 54                	push   %r12
  3a:	48 83 ec 30          	sub    $0x30,%rsp
  3e:	44                   	rex.R
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 7e                	ja     0x86
   8:	c3                   	ret
   9:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   e:	41 54                	push   %r12
  10:	48 83 ec 30          	sub    $0x30,%rsp
  14:	44                   	rex.R
  15:	89                   	.byte 0x89
[   10.872166][  T248] RSP: 002b:00007fff48595528 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   10.872484][  T248] RAX: ffffffffffffffda RBX: 00000000312f7b00 RCX: 00007f0e2b876a4a
[   10.872795][  T248] RDX: 0000000000000040 RSI: 00000000312f7b00 RDI: 0000000000000005
[   10.873112][  T248] RBP: 00000000312f7910 R08: 00007f0e2ba1a200 R09: 000000000000000c
[   10.873421][  T248] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000040f200
[   10.873736][  T248] R13: 00000000312f7910 R14: 0000000000000000 R15: 0000000000000001
| [   80.459539][   T67] ------------[ cut here ]------------
| [ 80.459819][ T67] WARNING: CPU: 0 PID: 67 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) 
| [   80.460182][   T67] Modules linked in: netdevsim
| [   80.460698][   T67] Tainted: [W]=WARN
[   80.460827][   T67] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   80.461049][   T67] Workqueue: netns cleanup_net
[ 80.461246][ T67] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 80.461464][ T67] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 98 0c 00 00 be ff ff ff ff e8 d8 33 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 98 0c 00 00 	lea    0xc98(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 d8 33 78 00       	call   0x7833f9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   80.462066][   T67] RSP: 0018:ffffc90000487620 EFLAGS: 00010246
[   80.462281][   T67] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   80.462533][   T67] RDX: 0000000000000000 RSI: ffff888004f7ac98 RDI: ffff888008b80b50
[   80.462785][   T67] RBP: ffffffff89f23440 R08: 0000000000000000 R09: fffffbfff0fbd83c
[   80.463103][   T67] R10: ffffffff87dec1e7 R11: ffff888008b80040 R12: 0000000000000000
[   80.463352][   T67] R13: ffff888004f7a128 R14: ffff888004f7a008 R15: ffff888004f7a000
[   80.463602][   T67] FS:  0000000000000000(0000) GS:ffff888036000000(0000) knlGS:0000000000000000
[   80.463887][   T67] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   80.464110][   T67] CR2: 0000558b3d7f1f28 CR3: 0000000013528001 CR4: 0000000000772ef0
[   80.464366][   T67] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   80.464715][   T67] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   80.464970][   T67] PKRU: 55555554
[   80.465111][   T67] Call Trace:
[   80.465244][   T67]  <TASK>
[ 80.465334][ T67] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 80.465505][ T67] ? __warn (kernel/panic.c:748) 
[ 80.465640][ T67] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 80.465813][ T67] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 80.465994][ T67] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 80.466136][ T67] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 80.466307][ T67] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 80.466495][ T67] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 80.466678][ T67] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 80.466907][ T67] ? _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) 
[ 80.467095][ T67] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 80.467273][ T67] register_netdevice (net/core/dev.c:11003) 
[ 80.467453][ T67] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 80.467637][ T67] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 80.467825][ T67] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 80.468056][ T67] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 80.468288][ T67] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 80.468515][ T67] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 80.468735][ T67] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 80.468953][ T67] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 80.469202][ T67] devlink_reload (net/devlink/dev.c:474) 
[ 80.469387][ T67] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 80.469561][ T67] ? devlinks_xa_find_get (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/devlink/core.c:343) 
[ 80.469743][ T67] devlink_pernet_pre_exit (net/devlink/core.c:288 net/devlink/devl_internal.h:114 net/devlink/core.c:513) 
[ 80.469919][ T67] ? __pfx_devlink_pernet_pre_exit (net/devlink/core.c:496) 
[ 80.470155][ T67] cleanup_net (net/core/net_namespace.c:162 net/core/net_namespace.c:632) 
[ 80.470331][ T67] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 80.470510][ T67] ? __pfx_cleanup_net (net/core/net_namespace.c:594) 
[ 80.470680][ T67] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 80.470862][ T67] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 80.471042][ T67] ? process_one_work (kernel/workqueue.c:3214) 
[ 80.471227][ T67] process_one_work (kernel/workqueue.c:3238) 
[ 80.471407][ T67] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 80.471576][ T67] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 80.471777][ T67] ? assign_work (kernel/workqueue.c:1200) 
[ 80.471957][ T67] worker_thread (kernel/workqueue.c:3313 kernel/workqueue.c:3400) 
[ 80.472139][ T67] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 80.472361][ T67] ? __pfx_worker_thread (kernel/workqueue.c:3346) 
[ 80.472539][ T67] kthread (kernel/kthread.c:464) 
[ 80.472671][ T67] ? __pfx_kthread (kernel/kthread.c:413) 
[ 80.472846][ T67] ? __pfx_kthread (kernel/kthread.c:413) 
[ 80.473019][ T67] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 80.473218][ T67] ? __pfx_kthread (kernel/kthread.c:413) 


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