======================================
| 0
| xx__-> [   11.743191][  T217] ------------[ cut here ]------------
| [ 11.743616][ T217] WARNING: CPU: 1 PID: 217 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) 
| [   11.744093][  T217] Modules linked in: netdevsim
[   11.744858][  T217] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 11.745114][ T217] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.745483][ T217] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 90 0c 00 00 be ff ff ff ff e8 08 e9 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 90 0c 00 00 	lea    0xc90(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 08 e9 78 00       	call   0x78e929
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   11.746294][  T217] RSP: 0018:ffffc90000a57548 EFLAGS: 00010246
[   11.746634][  T217] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   11.746948][  T217] RDX: 0000000000000000 RSI: ffff888008c32c90 RDI: ffff888009c950f8
[   11.747287][  T217] RBP: ffffffff8b128600 R08: 0000000000000000 R09: fffffbfff11fd944
[   11.747591][  T217] R10: ffffffff88feca27 R11: ffff888009c945c0 R12: 0000000000000000
[   11.747905][  T217] R13: ffff888008c32128 R14: ffff888008c32008 R15: ffff888008c32000
[   11.748222][  T217] FS:  00007f9b1399b1c0(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   11.748577][  T217] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   11.748842][  T217] CR2: 00007f9b063a65b0 CR3: 000000000a658002 CR4: 0000000000772ef0
[   11.749169][  T217] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   11.749471][  T217] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   11.749852][  T217] PKRU: 55555554
[   11.750072][  T217] Call Trace:
[   11.750249][  T217]  <TASK>
[ 11.750356][ T217] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.750568][ T217] ? __warn (kernel/panic.c:748) 
[ 11.750736][ T217] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.750943][ T217] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 11.751165][ T217] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 11.751321][ T217] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 11.751521][ T217] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 11.751749][ T217] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 11.751953][ T217] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 11.752173][ T217] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 11.752431][ T217] ? _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) 
[ 11.752640][ T217] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 11.752881][ T217] register_netdevice (net/core/dev.c:11003) 
[ 11.753101][ T217] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 11.753329][ T217] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 11.753545][ T217] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 11.753837][ T217] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 11.754109][ T217] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 11.754393][ T217] nsim_drv_probe (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 11.754609][ T217] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 11.754904][ T217] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 11.755130][ T217] ? 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)) 
[ 11.755321][ T217] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 11.755533][ T217] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 11.755795][ T217] __driver_probe_device (drivers/base/dd.c:800) 
[ 11.756013][ T217] driver_probe_device (drivers/base/dd.c:830) 
[ 11.756228][ T217] __device_attach_driver (drivers/base/dd.c:959) 
[ 11.756433][ T217] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 11.756690][ T217] bus_for_each_drv (drivers/base/bus.c:462) 
[ 11.756919][ T217] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 11.757123][ T217] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 11.757340][ T217] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 11.757546][ T217] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 11.757755][ T217] __device_attach (drivers/base/dd.c:1030) 
[ 11.757955][ T217] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 11.758164][ T217] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 11.758367][ T217] ? 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) 
[ 11.758579][ T217] bus_probe_device (drivers/base/bus.c:537) 
[ 11.758785][ T217] device_add (drivers/base/core.c:3672) 
[ 11.759029][ T217] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 11.759249][ T217] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 11.759464][ T217] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 11.759723][ T217] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 11.759983][ T217] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 11.760193][ T217] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 11.760399][ T217] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 11.760603][ T217] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 11.760810][ T217] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 11.760988][ T217] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 11.761206][ T217] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 11.761409][ T217] ? 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) 
[ 11.761624][ T217] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 11.761868][ T217] ksys_write (fs/read_write.c:731) 
[ 11.762040][ T217] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 11.762264][ T217] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 11.762493][ T217] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 11.762709][ T217] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   11.763010][  T217] RIP: 0033:0x7f9b13bb5b77
[ 11.763254][ T217] 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
[   11.764022][  T217] RSP: 002b:00007ffd2c288bc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   11.764366][  T217] RAX: ffffffffffffffda RBX: 00007f9b1399b140 RCX: 00007f9b13bb5b77
[   11.764693][  T217] RDX: 0000000000000009 RSI: 000055dc926bef80 RDI: 0000000000000005
[   11.765022][  T217] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[   11.765356][  T217] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f9b059a7400
[   11.765684][  T217] R13: 000055dc926bef80 R14: 0000000000000005 R15: 000055dc92415980
| [   12.708719][  T217] ------------[ cut here ]------------
| [ 12.709063][ T217] WARNING: CPU: 1 PID: 217 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   12.709525][  T217] Modules linked in: netdevsim
| [   12.710354][  T217] Tainted: [W]=WARN
[   12.710550][  T217] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 12.710826][ T217] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 12.711105][ T217] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 90 0c 00 00 be ff ff ff ff e8 08 e9 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 90 0c 00 00 	lea    0xc90(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 08 e9 78 00       	call   0x78e929
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   12.711894][  T217] RSP: 0018:ffffc90000a57548 EFLAGS: 00010246
[   12.712191][  T217] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   12.712546][  T217] RDX: 0000000000000000 RSI: ffff88800a73ac90 RDI: ffff888009c950f8
[   12.712870][  T217] RBP: ffffffff8b128600 R08: 0000000000000000 R09: fffffbfff11fd944
[   12.713198][  T217] R10: ffffffff88feca27 R11: ffff888009c945c0 R12: 0000000000000000
[   12.713512][  T217] R13: ffff88800a73a128 R14: ffff88800a73a008 R15: ffff88800a73a000
[   12.713860][  T217] FS:  00007f9b1399b1c0(0000) GS:ffff888036080000(0000) knlGS:0000000000000000
[   12.714248][  T217] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   12.714522][  T217] CR2: 00007f9b140329a0 CR3: 000000000a658002 CR4: 0000000000772ef0
[   12.714841][  T217] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   12.715171][  T217] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   12.715498][  T217] PKRU: 55555554
[   12.715665][  T217] Call Trace:
[   12.715829][  T217]  <TASK>
[ 12.715939][ T217] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 12.716166][ T217] ? __warn (kernel/panic.c:748) 
[ 12.716337][ T217] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 12.716590][ T217] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 12.716818][ T217] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 12.716983][ T217] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 12.717212][ T217] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 12.717448][ T217] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 12.717666][ T217] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 12.717889][ T217] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 12.718179][ T217] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 12.718438][ T217] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 12.718671][ T217] register_netdevice (net/core/dev.c:11003) 
[ 12.718885][ T217] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 12.719112][ T217] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 12.719351][ T217] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 12.719625][ T217] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 12.719913][ T217] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 12.720225][ T217] nsim_drv_probe (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 12.720458][ T217] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 12.720763][ T217] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 12.720981][ T217] ? kernfs_put (./arch/x86/include/asm/atomic.h:67 (discriminator 1) ./include/linux/atomic/atomic-arch-fallback.h:2278 (discriminator 1) ./include/linux/atomic/atomic-instrumented.h:1384 (discriminator 1) fs/kernfs/dir.c:557 (discriminator 1)) 
[ 12.721156][ T217] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 12.721386][ T217] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 12.721613][ T217] __driver_probe_device (drivers/base/dd.c:800) 
[ 12.721832][ T217] driver_probe_device (drivers/base/dd.c:830) 
[ 12.722048][ T217] __device_attach_driver (drivers/base/dd.c:959) 
[ 12.722283][ T217] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 12.722559][ T217] bus_for_each_drv (drivers/base/bus.c:462) 
[ 12.722782][ T217] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 12.722998][ T217] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 12.723225][ T217] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 12.723442][ T217] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 12.723662][ T217] __device_attach (drivers/base/dd.c:1030) 
[ 12.723897][ T217] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 12.724113][ T217] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 12.724340][ T217] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) 
[ 12.724591][ T217] bus_probe_device (drivers/base/bus.c:537) 
[ 12.724816][ T217] device_add (drivers/base/core.c:3672) 
[ 12.725037][ T217] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 12.725265][ T217] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 12.725493][ T217] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 12.725779][ T217] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 12.726060][ T217] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 12.726295][ T217] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 12.726517][ T217] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 12.726731][ T217] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 12.726955][ T217] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 12.727130][ T217] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 12.727367][ T217] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 12.727580][ T217] ? do_user_addr_fault (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 12.727807][ T217] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 12.728033][ T217] ksys_write (fs/read_write.c:731) 
[ 12.728253][ T217] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 12.728470][ T217] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 12.728722][ T217] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 12.728942][ T217] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   12.729219][  T217] RIP: 0033:0x7f9b13bb5b77
[ 12.729438][ T217] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0b 00                	or     (%rax),%eax
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[   12.730201][  T217] RSP: 002b:00007ffd2c288b88 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   12.730527][  T217] RAX: ffffffffffffffda RBX: 00007f9b1399b140 RCX: 00007f9b13bb5b77
[   12.730845][  T217] RDX: 0000000000000009 RSI: 000055dc926bef80 RDI: 0000000000000005
[   12.731182][  T217] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[   12.731501][  T217] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f9b059a7400
[   12.731817][  T217] R13: 000055dc926bef80 R14: 0000000000000005 R15: 000055dc92415980
| [   13.178669][  T234] ------------[ cut here ]------------
| [ 13.179098][ T234] WARNING: CPU: 2 PID: 234 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [   13.179733][  T234] Modules linked in: netdevsim
| [   13.180376][  T234] Tainted: [W]=WARN
[   13.180569][  T234] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 13.180906][ T234] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 13.181279][ T234] Code: 00 e8 a3 4a fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf 90 0c 00 00 be ff ff ff ff e8 08 e9 78 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	a3 4a fe ff 48 8b 5c 	movabs %eax,0x58245c8b48fffe4a
   9:	24 58 
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf 90 0c 00 00 	lea    0xc90(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 08 e9 78 00       	call   0x78e929
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[   13.182188][  T234] RSP: 0018:ffffc900007171f0 EFLAGS: 00010246
[   13.182512][  T234] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   13.182920][  T234] RDX: 0000000000000000 RSI: ffff888008a72c90 RDI: ffff888009bc2dc0
[   13.183324][  T234] RBP: ffff888005068040 R08: 0000000000000000 R09: fffffbfff11fd944
[   13.183696][  T234] R10: ffffffff88feca27 R11: ffff888009bc2300 R12: 0000000000000000
[   13.184015][  T234] R13: ffff888008a72128 R14: ffff888008a72008 R15: ffff888008a72000
[   13.184325][  T234] FS:  00007f6e9b0fe800(0000) GS:ffff888036100000(0000) knlGS:0000000000000000
[   13.184713][  T234] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   13.185011][  T234] CR2: 00007f6e9b23d440 CR3: 000000000b9b4003 CR4: 0000000000772ef0
[   13.185371][  T234] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   13.185718][  T234] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   13.186036][  T234] PKRU: 55555554
[   13.186204][  T234] Call Trace:
[   13.186393][  T234]  <TASK>
[ 13.186520][ T234] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 13.186760][ T234] ? __warn (kernel/panic.c:748) 
[ 13.186942][ T234] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 13.187229][ T234] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 13.187482][ T234] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 13.187697][ T234] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 13.187948][ T234] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 13.188181][ T234] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 13.188393][ T234] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 13.188663][ T234] ? _raw_spin_unlock_irq (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 ./include/linux/spinlock_api_smp.h:159 kernel/locking/spinlock.c:202) 
[ 13.188905][ T234] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 13.189155][ T234] register_netdevice (net/core/dev.c:11003) 
[ 13.189410][ T234] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 13.189648][ T234] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 13.189932][ T234] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 13.190297][ T234] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 13.190665][ T234] ? nsim_dev_hwstats_init (./include/linux/workqueue.h:817 drivers/net/netdevsim/hwstats.c:442) netdevsim 
[ 13.191023][ T234] nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1450 drivers/net/netdevsim/dev.c:1501) netdevsim 
[ 13.191384][ T234] ? __pfx_nsim_dev_reload_create (drivers/net/netdevsim/dev.c:1462) netdevsim 
[ 13.191711][ T234] ? devlink_params_driverinit_load_new (net/devlink/param.c:833 (discriminator 2)) 
[ 13.191983][ T234] devlink_reload (net/devlink/dev.c:474) 
[ 13.192203][ T234] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 13.192413][ T234] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 13.192621][ T234] ? cap_capable (security/commoncap.c:131) 
[ 13.192835][ T234] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1146 fs/file.c:1160) 
[ 13.193002][ T234] devlink_nl_reload_doit (net/devlink/dev.c:584) 
[ 13.193227][ T234] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 13.193528][ T234] ? __nla_parse (lib/nlattr.c:732) 
[ 13.193765][ T234] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1115) 
[ 13.193985][ T234] ? __pfx_genl_family_rcv_msg_doit (net/netlink/genetlink.c:1088) 
[ 13.194283][ T234] ? cap_capable (security/commoncap.c:131) 
[ 13.194497][ T234] ? validate_chain (kernel/locking/lockdep.c:3799 kernel/locking/lockdep.c:3819 kernel/locking/lockdep.c:3874) 
[ 13.194719][ T234] genl_family_rcv_msg (net/netlink/genetlink.c:1195) 
[ 13.194937][ T234] ? __pfx_genl_family_rcv_msg (net/netlink/genetlink.c:1160) 
[ 13.195201][ T234] ? __pfx_devlink_nl_pre_doit_dev_lock (net/devlink/netlink.c:257) 
[ 13.195463][ T234] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 13.195726][ T234] ? __pfx_devlink_nl_post_doit_dev_lock (net/devlink/netlink.c:288) 
[ 13.196003][ T234] genl_rcv_msg (net/netlink/genetlink.c:65 net/netlink/genetlink.c:1211) 
[ 13.196237][ T234] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 13.196460][ T234] ? __pfx_genl_rcv_msg (net/netlink/genetlink.c:1201) 
[ 13.196679][ T234] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 13.196909][ T234] ? genl_rcv (net/netlink/genetlink.c:1219) 
[ 13.197073][ T234] ? __pfx_down_read (kernel/locking/rwsem.c:1522) 
[ 13.197300][ T234] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 13.197530][ T234] genl_rcv (net/netlink/genetlink.c:1220) 
[ 13.197698][ T234] netlink_unicast (net/netlink/af_netlink.c:1313 net/netlink/af_netlink.c:1339) 
[ 13.197915][ T234] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 13.198132][ T234] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 13.198364][ T234] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 13.198585][ T234] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 13.198797][ T234] ? lock_acquire (kernel/locking/lockdep.c:5824) 
[ 13.199015][ T234] ? __might_fault (mm/memory.c:6851 mm/memory.c:6844) 
[ 13.199269][ T234] __sys_sendto (net/socket.c:709 net/socket.c:724 net/socket.c:2178) 
[ 13.199491][ T234] ? __pfx___sys_sendto (net/socket.c:2145) 
[ 13.199705][ T234] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 13.199918][ T234] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 21)) 
[ 13.200155][ T234] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 13.200376][ T234] ? __rseq_handle_notify_resume (kernel/rseq.c:420) 
[ 13.200636][ T234] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 13.200856][ T234] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:403) 
[ 13.201123][ T234] ? __pfx___x64_sys_openat (fs/open.c:1454) 
[ 13.201354][ T234] __x64_sys_sendto (net/socket.c:2181) 
[ 13.201568][ T234] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 13.201826][ T234] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 13.202042][ T234] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   13.202321][  T234] RIP: 0033:0x7f6e9b30aa4a
[ 13.202542][ T234] 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
[   13.203272][  T234] RSP: 002b:00007fff7cc36b98 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   13.203589][  T234] RAX: ffffffffffffffda RBX: 000000003da77b00 RCX: 00007f6e9b30aa4a
[   13.203918][  T234] RDX: 0000000000000040 RSI: 000000003da77b00 RDI: 0000000000000003
[   13.204294][  T234] RBP: 000000003da77910 R08: 00007f6e9b4ae200 R09: 000000000000000c
[   13.204652][  T234] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000040f200


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