======================================
| 0
| xx__-> [  526.312853][ T4385] ------------[ cut here ]------------
| [ 526.313323][ T4385] WARNING: CPU: 2 PID: 4385 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) 
| [  526.313882][ T4385] Modules linked in: netdevsim psample sctp_diag sctp vxcan can_dev xfrm_interface ip6_gre ip_gre gre macsec ipvlan act_mirred cls_u32 ifb act_gact cls_flower sch_ingress vxlan
[  526.314983][ T4385] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 526.315356][ T4385] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 526.315696][ T4385] 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
[  526.316442][ T4385] RSP: 0018:ffffc900004c7528 EFLAGS: 00010246
[  526.316721][ T4385] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  526.317039][ T4385] RDX: 0000000000000000 RSI: ffff888012c82cd0 RDI: ffff88800fe00b78
[  526.317373][ T4385] RBP: ffff888009c2b8c0 R08: 0000000000000000 R09: fffffbfff6ec2504
[  526.317699][ T4385] R10: ffffffffb7612827 R11: ffff88800fe00040 R12: 0000000000000000
[  526.318035][ T4385] R13: ffff888012c82130 R14: ffff888012c82008 R15: ffff888012c82000
[  526.318384][ T4385] FS:  00007fd2d3405740(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
[  526.318756][ T4385] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  526.319029][ T4385] CR2: 000055c30ae412f8 CR3: 0000000010b4a005 CR4: 0000000000772ef0
[  526.319370][ T4385] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  526.319693][ T4385] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  526.320013][ T4385] PKRU: 55555554
[  526.320187][ T4385] Call Trace:
[  526.320372][ T4385]  <TASK>
[ 526.320497][ T4385] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 526.320721][ T4385] ? __warn (kernel/panic.c:748) 
[ 526.320897][ T4385] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 526.321120][ T4385] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 526.321356][ T4385] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 526.321531][ T4385] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 526.321751][ T4385] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 526.321984][ T4385] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 526.322206][ T4385] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 526.322460][ T4385] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 526.322747][ T4385] ? _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) 
[ 526.322973][ T4385] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 526.323200][ T4385] register_netdevice (net/core/dev.c:11003) 
[ 526.323443][ T4385] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 526.323662][ T4385] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 526.323899][ T4385] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 526.324136][ T4385] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 526.324424][ T4385] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 526.324599][ T4385] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 526.324882][ T4385] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 526.325161][ T4385] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 526.325450][ T4385] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 526.325689][ T4385] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 526.325961][ T4385] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 526.326185][ T4385] ? 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)) 
[ 526.326378][ T4385] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 526.326611][ T4385] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 526.326835][ T4385] __driver_probe_device (drivers/base/dd.c:800) 
[ 526.327064][ T4385] driver_probe_device (drivers/base/dd.c:830) 
[ 526.327298][ T4385] __device_attach_driver (drivers/base/dd.c:959) 
[ 526.327524][ T4385] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 526.327790][ T4385] bus_for_each_drv (drivers/base/bus.c:462) 
[ 526.328021][ T4385] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 526.328237][ T4385] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 526.328470][ T4385] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 526.328695][ T4385] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 526.328921][ T4385] __device_attach (drivers/base/dd.c:1030) 
[ 526.329140][ T4385] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 526.329370][ T4385] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 526.329589][ T4385] ? 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) 
[ 526.329815][ T4385] bus_probe_device (drivers/base/bus.c:537) 
[ 526.330039][ T4385] device_add (drivers/base/core.c:3672) 
[ 526.330283][ T4385] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 526.330510][ T4385] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 526.330740][ T4385] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 526.331024][ T4385] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 526.331322][ T4385] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 526.331543][ T4385] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 526.331767][ T4385] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 526.331990][ T4385] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 526.332216][ T4385] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 526.332405][ T4385] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 526.332632][ T4385] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 526.332852][ T4385] ? 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) 
[ 526.333078][ T4385] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 526.333315][ T4385] ksys_write (fs/read_write.c:731) 
[ 526.333487][ T4385] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 526.333718][ T4385] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 526.333949][ T4385] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 526.334169][ T4385] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  526.334457][ T4385] RIP: 0033:0x7fd2d3546b77
[ 526.334688][ T4385] 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
[  526.335428][ T4385] RSP: 002b:00007ffe6cf31008 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  526.335761][ T4385] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fd2d3546b77
[  526.336083][ T4385] RDX: 0000000000000007 RSI: 000055c30ae402f0 RDI: 0000000000000001
[  526.336416][ T4385] RBP: 000055c30ae402f0 R08: 0000000000000006 R09: 0000000000000077
[  526.336741][ T4385] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000007
[  526.337063][ T4385] R13: 00007fd2d3602760 R14: 0000000000000007 R15: 00007fd2d35fd9c0
| [  541.076425][ T4426] ------------[ cut here ]------------
| [ 541.076818][ T4426] WARNING: CPU: 1 PID: 4426 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) 
| [  541.077380][ T4426] Modules linked in: drop_monitor netdevsim psample sctp_diag sctp vxcan can_dev xfrm_interface ip6_gre ip_gre gre macsec ipvlan act_mirred cls_u32 ifb act_gact cls_flower sch_ingress vxlan
| [  541.078560][ T4426] Tainted: [W]=WARN
[  541.078741][ T4426] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 541.079000][ T4426] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 541.079276][ T4426] 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
[  541.079979][ T4426] RSP: 0018:ffffc90000607528 EFLAGS: 00010246
[  541.080237][ T4426] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[  541.080555][ T4426] RDX: 0000000000000000 RSI: ffff88800d172cd0 RDI: ffff88800abb2e38
[  541.080860][ T4426] RBP: ffff888009c28040 R08: 0000000000000000 R09: fffffbfff6ec2504
[  541.081162][ T4426] R10: ffffffffb7612827 R11: ffff88800abb2300 R12: 0000000000000000
[  541.081475][ T4426] R13: ffff88800d172130 R14: ffff88800d172008 R15: ffff88800d172000
[  541.081785][ T4426] FS:  00007f66aa4a4740(0000) GS:ffff88806ce80000(0000) knlGS:0000000000000000
[  541.082137][ T4426] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  541.082506][ T4426] CR2: 000055f993a5f2f8 CR3: 00000000094a8003 CR4: 0000000000772ef0
[  541.082816][ T4426] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  541.083125][ T4426] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  541.083523][ T4426] PKRU: 55555554
[  541.083680][ T4426] Call Trace:
[  541.083835][ T4426]  <TASK>
[ 541.083941][ T4426] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 541.084147][ T4426] ? __warn (kernel/panic.c:748) 
[ 541.084403][ T4426] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 541.084612][ T4426] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 541.084830][ T4426] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 541.084995][ T4426] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 541.085200][ T4426] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 541.085522][ T4426] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 541.085732][ T4426] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 541.085943][ T4426] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 541.086205][ T4426] ? _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) 
[ 541.086530][ T4426] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 541.086744][ T4426] register_netdevice (net/core/dev.c:11003) 
[ 541.086954][ T4426] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 541.087158][ T4426] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 541.087472][ T4426] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 541.087694][ T4426] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 541.087970][ T4426] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 541.088130][ T4426] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 541.088508][ T4426] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 541.088776][ T4426] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 541.089041][ T4426] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 541.089279][ T4426] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 541.089548][ T4426] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 541.089757][ T4426] ? 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)) 
[ 541.089913][ T4426] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 541.090129][ T4426] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 541.090354][ T4426] __driver_probe_device (drivers/base/dd.c:800) 
[ 541.090564][ T4426] driver_probe_device (drivers/base/dd.c:830) 
[ 541.090769][ T4426] __device_attach_driver (drivers/base/dd.c:959) 
[ 541.090983][ T4426] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 541.091236][ T4426] bus_for_each_drv (drivers/base/bus.c:462) 
[ 541.091453][ T4426] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 541.091657][ T4426] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 541.091863][ T4426] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 541.092066][ T4426] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 541.092287][ T4426] __device_attach (drivers/base/dd.c:1030) 
[ 541.092496][ T4426] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 541.092700][ T4426] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 541.092912][ T4426] ? 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) 
[ 541.093145][ T4426] bus_probe_device (drivers/base/bus.c:537) 
[ 541.093367][ T4426] device_add (drivers/base/core.c:3672) 
[ 541.093576][ T4426] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 541.093780][ T4426] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 541.093996][ T4426] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 541.094279][ T4426] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 541.094547][ T4426] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 541.094750][ T4426] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 541.094960][ T4426] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 541.095161][ T4426] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 541.095383][ T4426] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 541.095553][ T4426] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 541.095775][ T4426] ? rseq_update_cpu_node_id (kernel/rseq.c:188 (discriminator 10)) 
[ 541.095991][ T4426] ksys_write (fs/read_write.c:731) 
[ 541.096149][ T4426] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 541.096378][ T4426] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 541.096588][ T4426] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  541.096842][ T4426] RIP: 0033:0x7f66aa5e5b77
[ 541.097049][ T4426] 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
[  541.097763][ T4426] RSP: 002b:00007ffc392eba68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[  541.098081][ T4426] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f66aa5e5b77
[  541.098395][ T4426] RDX: 0000000000000007 RSI: 000055f993a5e2f0 RDI: 0000000000000001
[  541.098704][ T4426] RBP: 000055f993a5e2f0 R08: 0000000000000006 R09: 0000000000000077
[  541.099010][ T4426] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000007


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