======================================
| xx__-> [   31.291228][  T612] ip (612) used greatest stack depth: 23800 bytes left
| [   31.498238][  T614] ------------[ cut here ]------------
| [ 31.498606][ T614] WARNING: CPU: 2 PID: 614 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) 
| [   31.499698][  T614] Modules linked in: netdevsim psample unix_diag
[   31.500342][  T614] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 31.500614][ T614] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 31.500901][ T614] 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
[   31.501615][  T614] RSP: 0018:ffffc90000567528 EFLAGS: 00010246
[   31.501899][  T614] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   31.502218][  T614] RDX: 0000000000000000 RSI: ffff888009b3acd0 RDI: ffff88800c202e38
[   31.502537][  T614] RBP: ffff88800a9f9c80 R08: 0000000000000000 R09: fffffbfff6902504
[   31.502871][  T614] R10: ffffffffb4812827 R11: ffff88800c202300 R12: 0000000000000000
[   31.503187][  T614] R13: ffff888009b3a130 R14: ffff888009b3a008 R15: ffff888009b3a000
[   31.503505][  T614] FS:  00007fd5f0552740(0000) GS:ffff888065b00000(0000) knlGS:0000000000000000
[   31.503881][  T614] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   31.504155][  T614] CR2: 00007f9c25cb6960 CR3: 000000000e7e2004 CR4: 0000000000772ef0
[   31.504474][  T614] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   31.504800][  T614] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   31.505119][  T614] PKRU: 55555554
[   31.505289][  T614] Call Trace:
[   31.505464][  T614]  <TASK>
[ 31.505586][ T614] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 31.505820][ T614] ? __warn (kernel/panic.c:748) 
[ 31.505990][ T614] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 31.506209][ T614] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 31.506540][ T614] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 31.506725][ T614] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 31.506945][ T614] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 31.507188][ T614] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 31.507408][ T614] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 31.507630][ T614] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 31.507916][ T614] ? _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) 
[ 31.508137][ T614] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 31.508361][ T614] register_netdevice (net/core/dev.c:11003) 
[ 31.508587][ T614] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 31.508820][ T614] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 31.509051][ T614] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 31.509284][ T614] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 31.509555][ T614] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 31.509739][ T614] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 31.510019][ T614] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 31.510297][ T614] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 31.510570][ T614] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 31.510811][ T614] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 31.511082][ T614] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 31.511301][ T614] ? 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)) 
[ 31.511469][ T614] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 31.511696][ T614] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 31.511933][ T614] __driver_probe_device (drivers/base/dd.c:800) 
[ 31.512153][ T614] driver_probe_device (drivers/base/dd.c:830) 
[ 31.512371][ T614] __device_attach_driver (drivers/base/dd.c:959) 
[ 31.512589][ T614] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 31.512862][ T614] bus_for_each_drv (drivers/base/bus.c:462) 
[ 31.513080][ T614] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 31.513304][ T614] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 31.513520][ T614] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 31.513749][ T614] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 31.513972][ T614] __device_attach (drivers/base/dd.c:1030) 
[ 31.514191][ T614] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 31.514405][ T614] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 31.514623][ T614] ? 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) 
[ 31.514860][ T614] bus_probe_device (drivers/base/bus.c:537) 
[ 31.515082][ T614] device_add (drivers/base/core.c:3672) 
[ 31.515301][ T614] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 31.515515][ T614] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 31.515754][ T614] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 31.516028][ T614] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 31.516305][ T614] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 31.516523][ T614] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 31.516756][ T614] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 31.516969][ T614] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 31.517210][ T614] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 31.517387][ T614] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 31.517611][ T614] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 31.517837][ T614] ? 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) 
[ 31.518064][ T614] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 31.518291][ T614] ksys_write (fs/read_write.c:731) 
[ 31.518463][ T614] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 31.518678][ T614] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 31.518918][ T614] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 31.519140][ T614] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   31.519400][  T614] RIP: 0033:0x7fd5f0693b77
[ 31.519633][ T614] 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
[   31.520354][  T614] RSP: 002b:00007fffb4db6478 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   31.520691][  T614] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fd5f0693b77
[   31.521017][  T614] RDX: 0000000000000007 RSI: 00005576ee9bc2f0 RDI: 0000000000000001
[   31.521340][  T614] RBP: 00005576ee9bc2f0 R08: 0000000000000006 R09: 0000000000000077
[   31.521656][  T614] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000007
[   31.521986][  T614] R13: 00007fd5f074f760 R14: 0000000000000007 R15: 00007fd5f074a9c0
| [   46.413610][  T660] ------------[ cut here ]------------
| [ 46.413997][ T660] WARNING: CPU: 3 PID: 660 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) 
| [   46.414396][  T660] Modules linked in: drop_monitor act_gact cls_flower sch_ingress netdevsim psample unix_diag
| [   46.415171][  T660] Tainted: [W]=WARN
[   46.415343][  T660] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 46.415587][ T660] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 46.415898][ T660] 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
[   46.416604][  T660] RSP: 0018:ffffc900006e7528 EFLAGS: 00010246
[   46.416871][  T660] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   46.417183][  T660] RDX: 0000000000000000 RSI: ffff888009fdacd0 RDI: ffff88800e1cd0f8
[   46.417483][  T660] RBP: ffff88800a9fb8c0 R08: 0000000000000000 R09: fffffbfff6902504
[   46.417797][  T660] R10: ffffffffb4812827 R11: ffff88800e1cc5c0 R12: 0000000000000000
[   46.418100][  T660] R13: ffff888009fda130 R14: ffff888009fda008 R15: ffff888009fda000
[   46.418399][  T660] FS:  00007f6820e35740(0000) GS:ffff888065b80000(0000) knlGS:0000000000000000
[   46.418760][  T660] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   46.419015][  T660] CR2: 000055630109e2f8 CR3: 000000000547a005 CR4: 0000000000772ef0
[   46.419440][  T660] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   46.419756][  T660] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   46.420058][  T660] PKRU: 55555554
[   46.420215][  T660] Call Trace:
[   46.420367][  T660]  <TASK>
[ 46.420471][ T660] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 46.420693][ T660] ? __warn (kernel/panic.c:748) 
[ 46.420863][ T660] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 46.421070][ T660] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 46.421277][ T660] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 46.421432][ T660] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 46.421635][ T660] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 46.421863][ T660] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 46.422069][ T660] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 46.422283][ T660] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 46.422540][ T660] ? _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) 
[ 46.422760][ T660] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 46.422969][ T660] register_netdevice (net/core/dev.c:11003) 
[ 46.423177][ T660] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 46.423379][ T660] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 46.423601][ T660] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 46.423832][ T660] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 46.424094][ T660] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 46.424253][ T660] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 46.424519][ T660] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 46.424789][ T660] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 46.425056][ T660] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 46.425271][ T660] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 46.425528][ T660] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 46.425742][ T660] ? 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)) 
[ 46.425898][ T660] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 46.426110][ T660] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 46.426320][ T660] __driver_probe_device (drivers/base/dd.c:800) 
[ 46.426530][ T660] driver_probe_device (drivers/base/dd.c:830) 
[ 46.426743][ T660] __device_attach_driver (drivers/base/dd.c:959) 
[ 46.426955][ T660] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 46.427205][ T660] bus_for_each_drv (drivers/base/bus.c:462) 
[ 46.427412][ T660] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 46.427612][ T660] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 46.427828][ T660] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 46.428033][ T660] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 46.428241][ T660] __device_attach (drivers/base/dd.c:1030) 
[ 46.428445][ T660] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 46.428648][ T660] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 46.428861][ T660] ? 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) 
[ 46.429071][ T660] bus_probe_device (drivers/base/bus.c:537) 
[ 46.429279][ T660] device_add (drivers/base/core.c:3672) 
[ 46.429488][ T660] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 46.429688][ T660] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 46.429912][ T660] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 46.430175][ T660] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 46.430438][ T660] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 46.430638][ T660] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 46.430857][ T660] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 46.431061][ T660] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 46.431270][ T660] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 46.431433][ T660] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 46.431641][ T660] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 46.431853][ T660] ? 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) 
[ 46.432066][ T660] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 46.432277][ T660] ksys_write (fs/read_write.c:731) 
[ 46.432437][ T660] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 46.432639][ T660] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 46.432864][ T660] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 46.433073][ T660] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   46.433321][  T660] RIP: 0033:0x7f6820f76b77
[ 46.433528][ T660] 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
[   46.434234][  T660] RSP: 002b:00007ffcaa4056e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   46.434540][  T660] RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f6820f76b77
[   46.434847][  T660] RDX: 0000000000000007 RSI: 000055630109d2f0 RDI: 0000000000000001
[   46.435148][  T660] RBP: 000055630109d2f0 R08: 0000000000000006 R09: 0000000000000077
[   46.435450][  T660] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000007


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