======================================
| 0
| xx__-> [   72.159410][ T1483] ------------[ cut here ]------------
| [ 72.159859][ T1483] WARNING: CPU: 1 PID: 1483 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) 
| [   72.160445][ T1483] Modules linked in: netdevsim psample dccp_ipv6 dccp_ipv4 dccp vxlan sch_etf sch_fq
[   72.161267][ T1483] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 72.161582][ T1483] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 72.161895][ T1483] 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
[   72.162675][ T1483] RSP: 0018:ffffc90000517528 EFLAGS: 00010246
[   72.162966][ T1483] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   72.163311][ T1483] RDX: 0000000000000000 RSI: ffff88800c83acd0 RDI: ffff88800b560b78
[   72.163650][ T1483] RBP: ffff88800fc6b8c0 R08: 0000000000000000 R09: fffffbfff5382504
[   72.164006][ T1483] R10: ffffffffa9c12827 R11: ffff88800b560040 R12: 0000000000000000
[   72.164350][ T1483] R13: ffff88800c83a130 R14: ffff88800c83a008 R15: ffff88800c83a000
[   72.164695][ T1483] FS:  00007fcf0c666740(0000) GS:ffff88806ce80000(0000) knlGS:0000000000000000
[   72.165094][ T1483] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   72.165374][ T1483] CR2: 000056411e2cef88 CR3: 00000000029ee004 CR4: 0000000000772ef0
[   72.165732][ T1483] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   72.166078][ T1483] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   72.166431][ T1483] PKRU: 55555554
[   72.166621][ T1483] Call Trace:
[   72.166818][ T1483]  <TASK>
[ 72.166940][ T1483] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 72.167182][ T1483] ? __warn (kernel/panic.c:748) 
[ 72.167354][ T1483] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 72.167593][ T1483] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 72.167834][ T1483] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 72.168003][ T1483] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 72.168227][ T1483] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 72.168460][ T1483] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 72.168682][ T1483] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 72.168918][ T1483] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 72.169209][ T1483] ? _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) 
[ 72.169452][ T1483] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 72.169679][ T1483] register_netdevice (net/core/dev.c:11003) 
[ 72.169935][ T1483] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 72.170174][ T1483] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 72.170421][ T1483] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 72.170658][ T1483] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 72.170976][ T1483] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 72.171149][ T1483] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 72.171446][ T1483] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 72.171729][ T1483] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 72.172026][ T1483] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 72.172273][ T1483] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 72.172572][ T1483] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 72.172819][ T1483] ? 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)) 
[ 72.173000][ T1483] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 72.173244][ T1483] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 72.173474][ T1483] __driver_probe_device (drivers/base/dd.c:800) 
[ 72.173721][ T1483] driver_probe_device (drivers/base/dd.c:830) 
[ 72.173975][ T1483] __device_attach_driver (drivers/base/dd.c:959) 
[ 72.174210][ T1483] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 72.174508][ T1483] bus_for_each_drv (drivers/base/bus.c:462) 
[ 72.174742][ T1483] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 72.174972][ T1483] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 72.175204][ T1483] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 72.175436][ T1483] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 72.175663][ T1483] __device_attach (drivers/base/dd.c:1030) 
[ 72.175896][ T1483] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 72.176127][ T1483] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 72.176358][ T1483] ? 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) 
[ 72.176601][ T1483] bus_probe_device (drivers/base/bus.c:537) 
[ 72.176847][ T1483] device_add (drivers/base/core.c:3672) 
[ 72.177083][ T1483] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 72.177313][ T1483] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 72.177547][ T1483] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 72.177849][ T1483] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 72.178138][ T1483] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 72.178364][ T1483] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 72.178588][ T1483] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 72.178827][ T1483] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 72.179068][ T1483] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 72.179261][ T1483] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 72.179507][ T1483] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 72.179739][ T1483] ? 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) 
[ 72.179989][ T1483] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 72.180232][ T1483] ksys_write (fs/read_write.c:731) 
[ 72.180401][ T1483] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 72.180618][ T1483] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 72.180860][ T1483] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 72.181098][ T1483] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   72.181372][ T1483] RIP: 0033:0x7fcf0c7a7b77
[ 72.181609][ T1483] 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
[   72.182417][ T1483] RSP: 002b:00007fff55bb5b98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   72.182776][ T1483] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fcf0c7a7b77
[   72.183135][ T1483] RDX: 0000000000000007 RSI: 00005588e12da2f0 RDI: 0000000000000001
[   72.183482][ T1483] RBP: 00005588e12da2f0 R08: 0000000000000006 R09: 0000000000000077
[   72.183827][ T1483] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000007
[   72.184165][ T1483] R13: 00007fcf0c863760 R14: 0000000000000007 R15: 00007fcf0c85e9c0
| [   87.429108][ T1530] ------------[ cut here ]------------
| [ 87.429514][ T1530] WARNING: CPU: 3 PID: 1530 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) 
| [   87.429963][ T1530] Modules linked in: drop_monitor act_gact cls_flower sch_ingress netdevsim psample dccp_ipv6 dccp_ipv4 dccp vxlan sch_etf sch_fq
| [   87.430927][ T1530] Tainted: [W]=WARN
[   87.431147][ T1530] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 87.431403][ T1530] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 87.431666][ T1530] 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
[   87.432397][ T1530] RSP: 0018:ffffc900006a7528 EFLAGS: 00010246
[   87.432665][ T1530] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   87.432983][ T1530] RDX: 0000000000000000 RSI: ffff88800ea92cd0 RDI: ffff88800b110b78
[   87.433290][ T1530] RBP: ffff88800fc69c80 R08: 0000000000000000 R09: fffffbfff5382504
[   87.433597][ T1530] R10: ffffffffa9c12827 R11: ffff88800b110040 R12: 0000000000000000
[   87.433923][ T1530] R13: ffff88800ea92130 R14: ffff88800ea92008 R15: ffff88800ea92000
[   87.434232][ T1530] FS:  00007f96efa49740(0000) GS:ffff88806cf80000(0000) knlGS:0000000000000000
[   87.434741][ T1530] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   87.435015][ T1530] CR2: 000055b8103b32f8 CR3: 000000000b4e8004 CR4: 0000000000772ef0
[   87.435322][ T1530] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   87.435629][ T1530] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   87.435966][ T1530] PKRU: 55555554
[   87.436124][ T1530] Call Trace:
[   87.436279][ T1530]  <TASK>
[ 87.436387][ T1530] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 87.436593][ T1530] ? __warn (kernel/panic.c:748) 
[ 87.436752][ T1530] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 87.436969][ T1530] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 87.437184][ T1530] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 87.437350][ T1530] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 87.437555][ T1530] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 87.437777][ T1530] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 87.438010][ T1530] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 87.438223][ T1530] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 87.438484][ T1530] ? _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) 
[ 87.438695][ T1530] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 87.438930][ T1530] register_netdevice (net/core/dev.c:11003) 
[ 87.439143][ T1530] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 87.439347][ T1530] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 87.439569][ T1530] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 87.439796][ T1530] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 87.440071][ T1530] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 87.440240][ T1530] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 87.440511][ T1530] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 87.440777][ T1530] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 87.441053][ T1530] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 87.441271][ T1530] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 87.441532][ T1530] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 87.441749][ T1530] ? 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)) 
[ 87.441929][ T1530] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 87.442145][ T1530] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 87.442360][ T1530] __driver_probe_device (drivers/base/dd.c:800) 
[ 87.442572][ T1530] driver_probe_device (drivers/base/dd.c:830) 
[ 87.442778][ T1530] __device_attach_driver (drivers/base/dd.c:959) 
[ 87.443000][ T1530] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 87.443265][ T1530] bus_for_each_drv (drivers/base/bus.c:462) 
[ 87.443473][ T1530] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 87.443678][ T1530] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 87.443896][ T1530] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 87.444103][ T1530] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 87.444324][ T1530] __device_attach (drivers/base/dd.c:1030) 
[ 87.444532][ T1530] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 87.444743][ T1530] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 87.444960][ T1530] ? 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) 
[ 87.445176][ T1530] bus_probe_device (drivers/base/bus.c:537) 
[ 87.445387][ T1530] device_add (drivers/base/core.c:3672) 
[ 87.445599][ T1530] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 87.445824][ T1530] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 87.446049][ T1530] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 87.446326][ T1530] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 87.446594][ T1530] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 87.446799][ T1530] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 87.447028][ T1530] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 87.447232][ T1530] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 87.447445][ T1530] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 87.447611][ T1530] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 87.447839][ T1530] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 87.448044][ T1530] ? 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) 
[ 87.448259][ T1530] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 87.448472][ T1530] ksys_write (fs/read_write.c:731) 
[ 87.448631][ T1530] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 87.448844][ T1530] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 87.449058][ T1530] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 87.449271][ T1530] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   87.449528][ T1530] RIP: 0033:0x7f96efb8ab77
[ 87.449748][ T1530] 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
[   87.450479][ T1530] RSP: 002b:00007ffe7d3ece48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   87.450795][ T1530] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f96efb8ab77
[   87.451110][ T1530] RDX: 0000000000000007 RSI: 000055b8103b22f0 RDI: 0000000000000001
[   87.451418][ T1530] RBP: 000055b8103b22f0 R08: 0000000000000006 R09: 0000000000000077
[   87.451721][ T1530] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000007


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