======================================
| 0
| xx__-> [ 4585.178843][T22607] ------------[ cut here ]------------
| [4585.179293][T22607] WARNING: CPU: 0 PID: 22607 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:10596) 
| [ 4585.179790][T22607] Modules linked in: netdevsim psample dccp_ipv6 dccp_ipv4 dccp act_gact cls_flower sch_ingress sch_fq vxlan ip6t_rpfilter xfrm_user l2tp_ip6 l2tp_eth l2tp_ip l2tp_netlink l2tp_core pktgen nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_REJECT ipt_REJECT nft_compat nf_tables
[ 4585.181352][T22607] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[4585.181645][T22607] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 4585.181923][T22607] Code: 00 e8 13 47 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 5f 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   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 5f 99 00       	call   0x995fb9
  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
[ 4585.182681][T22607] RSP: 0018:ffffc90000d47528 EFLAGS: 00010246
[ 4585.182957][T22607] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4585.183459][T22607] RDX: 0000000000000000 RSI: ffff888010ae2cd0 RDI: ffff888010d350f8
[ 4585.183783][T22607] RBP: ffffffffb4453580 R08: 0000000000000000 R09: fffffbfff6442504
[ 4585.184117][T22607] R10: ffffffffb2212827 R11: ffff888010d345c0 R12: 0000000000000000
[ 4585.184446][T22607] R13: ffff888010ae2130 R14: ffff888010ae2008 R15: ffff888010ae2000
[ 4585.184770][T22607] FS:  00007f18666ca1c0(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
[ 4585.185195][T22607] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4585.185476][T22607] CR2: 00007f185910d0b0 CR3: 0000000009ee2005 CR4: 0000000000772ef0
[ 4585.185815][T22607] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4585.186162][T22607] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4585.186486][T22607] PKRU: 55555554
[ 4585.186652][T22607] Call Trace:
[ 4585.186818][T22607]  <TASK>
[4585.186936][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4585.187170][T22607] ? __warn (kernel/panic.c:748) 
[4585.187362][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4585.187583][T22607] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[4585.187810][T22607] ? handle_bug (arch/x86/kernel/traps.c:285) 
[4585.187981][T22607] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[4585.188213][T22607] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[4585.188450][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4585.188677][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[4585.188907][T22607] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[4585.189191][T22607] ? _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) 
[4585.189433][T22607] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[4585.189663][T22607] register_netdevice (net/core/dev.c:11033) 
[4585.189894][T22607] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[4585.190123][T22607] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[4585.190365][T22607] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[4585.190606][T22607] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[4585.190888][T22607] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[4585.191061][T22607] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[4585.191364][T22607] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[4585.191648][T22607] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[4585.191928][T22607] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[4585.192184][T22607] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[4585.192463][T22607] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[4585.192685][T22607] ? 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)) 
[4585.192855][T22607] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[4585.193099][T22607] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[4585.193328][T22607] __driver_probe_device (drivers/base/dd.c:800) 
[4585.193558][T22607] driver_probe_device (drivers/base/dd.c:830) 
[4585.193781][T22607] __device_attach_driver (drivers/base/dd.c:959) 
[4585.194006][T22607] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[4585.194289][T22607] bus_for_each_drv (drivers/base/bus.c:462) 
[4585.194515][T22607] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[4585.194732][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4585.194957][T22607] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4585.195190][T22607] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[4585.195417][T22607] __device_attach (drivers/base/dd.c:1030) 
[4585.195637][T22607] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[4585.195857][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4585.196093][T22607] ? 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) 
[4585.196323][T22607] bus_probe_device (drivers/base/bus.c:537) 
[4585.196548][T22607] device_add (drivers/base/core.c:3672) 
[4585.196773][T22607] ? __pfx_device_add (drivers/base/core.c:3548) 
[4585.196998][T22607] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[4585.197245][T22607] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[4585.197533][T22607] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[4585.197822][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4585.198040][T22607] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[4585.198276][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4585.198504][T22607] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[4585.198730][T22607] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[4585.198907][T22607] ? __pfx_vfs_write (fs/read_write.c:660) 
[4585.199141][T22607] ? __lock_release (kernel/locking/lockdep.c:5527) 
[4585.199361][T22607] ? 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) 
[4585.199589][T22607] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[4585.199815][T22607] ksys_write (fs/read_write.c:731) 
[4585.199985][T22607] ? __pfx_ksys_write (fs/read_write.c:721) 
[4585.200229][T22607] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[4585.200463][T22607] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4585.200688][T22607] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4585.200960][T22607] RIP: 0033:0x7f18668e4b77
[ 4585.201207][T22607] 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
[ 4585.201973][T22607] RSP: 002b:00007ffedd8a40c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4585.202315][T22607] RAX: ffffffffffffffda RBX: 00007f18666ca140 RCX: 00007f18668e4b77
[ 4585.202646][T22607] RDX: 0000000000000009 RSI: 000055f53af880c0 RDI: 0000000000000005
[ 4585.202975][T22607] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[ 4585.203320][T22607] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f1858566700
[ 4585.203651][T22607] R13: 000055f53af880c0 R14: 0000000000000005 R15: 000055f53aac2910
| [ 4597.064125][T22607] ------------[ cut here ]------------
| [4597.064520][T22607] WARNING: CPU: 3 PID: 22607 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:10596) 
| [ 4597.064955][T22607] Modules linked in: netdevsim psample dccp_ipv6 dccp_ipv4 dccp act_gact cls_flower sch_ingress sch_fq vxlan ip6t_rpfilter xfrm_user l2tp_ip6 l2tp_eth l2tp_ip l2tp_netlink l2tp_core pktgen nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_REJECT ipt_REJECT nft_compat nf_tables
| [ 4597.066516][T22607] Tainted: [W]=WARN
[ 4597.066692][T22607] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[4597.066945][T22607] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 4597.067215][T22607] Code: 00 e8 13 47 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 5f 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   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 5f 99 00       	call   0x995fb9
  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
[ 4597.067934][T22607] RSP: 0018:ffffc90000d47528 EFLAGS: 00010246
[ 4597.068218][T22607] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4597.068533][T22607] RDX: 0000000000000000 RSI: ffff88800db9acd0 RDI: ffff888010d350f8
[ 4597.068838][T22607] RBP: ffffffffb4453580 R08: 0000000000000000 R09: fffffbfff6442504
[ 4597.069150][T22607] R10: ffffffffb2212827 R11: ffff888010d345c0 R12: 0000000000000000
[ 4597.069463][T22607] R13: ffff88800db9a130 R14: ffff88800db9a008 R15: ffff88800db9a000
[ 4597.069763][T22607] FS:  00007f18666ca1c0(0000) GS:ffff88806cf80000(0000) knlGS:0000000000000000
[ 4597.070120][T22607] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4597.070528][T22607] CR2: 0000557ddab23a91 CR3: 0000000009ee2001 CR4: 0000000000772ef0
[ 4597.070826][T22607] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4597.071136][T22607] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4597.071431][T22607] PKRU: 55555554
[ 4597.071586][T22607] Call Trace:
[ 4597.071740][T22607]  <TASK>
[4597.071861][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4597.072078][T22607] ? __warn (kernel/panic.c:748) 
[4597.072240][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4597.072452][T22607] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[4597.072668][T22607] ? handle_bug (arch/x86/kernel/traps.c:285) 
[4597.072825][T22607] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[4597.073033][T22607] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[4597.073268][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4597.073493][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[4597.073706][T22607] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[4597.073969][T22607] ? _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) 
[4597.074193][T22607] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[4597.074410][T22607] register_netdevice (net/core/dev.c:11033) 
[4597.074623][T22607] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[4597.074840][T22607] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[4597.075062][T22607] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[4597.075349][T22607] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[4597.075612][T22607] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[4597.075775][T22607] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[4597.076047][T22607] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[4597.076328][T22607] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[4597.076596][T22607] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[4597.076820][T22607] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[4597.077100][T22607] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[4597.077306][T22607] ? 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)) 
[4597.077460][T22607] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[4597.077669][T22607] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[4597.077878][T22607] __driver_probe_device (drivers/base/dd.c:800) 
[4597.078093][T22607] driver_probe_device (drivers/base/dd.c:830) 
[4597.078300][T22607] __device_attach_driver (drivers/base/dd.c:959) 
[4597.078504][T22607] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[4597.078751][T22607] bus_for_each_drv (drivers/base/bus.c:462) 
[4597.078954][T22607] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[4597.079166][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4597.079367][T22607] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4597.079568][T22607] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[4597.079781][T22607] __device_attach (drivers/base/dd.c:1030) 
[4597.079983][T22607] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[4597.080190][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4597.080416][T22607] ? 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) 
[4597.080629][T22607] bus_probe_device (drivers/base/bus.c:537) 
[4597.080841][T22607] device_add (drivers/base/core.c:3672) 
[4597.081054][T22607] ? __pfx_device_add (drivers/base/core.c:3548) 
[4597.081268][T22607] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[4597.081502][T22607] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[4597.081762][T22607] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[4597.082026][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4597.082235][T22607] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[4597.082460][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4597.082664][T22607] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[4597.082882][T22607] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[4597.083048][T22607] ? __pfx_vfs_write (fs/read_write.c:660) 
[4597.083281][T22607] ? __lock_release (kernel/locking/lockdep.c:5527) 
[4597.083488][T22607] ? 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) 
[4597.083702][T22607] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[4597.083913][T22607] ksys_write (fs/read_write.c:731) 
[4597.084082][T22607] ? __pfx_ksys_write (fs/read_write.c:721) 
[4597.084287][T22607] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[4597.084509][T22607] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4597.084717][T22607] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4597.084981][T22607] RIP: 0033:0x7f18668e4b77
[ 4597.085200][T22607] 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
[ 4597.085929][T22607] RSP: 002b:00007ffedd8a40c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4597.086246][T22607] RAX: ffffffffffffffda RBX: 00007f18666ca140 RCX: 00007f18668e4b77
[ 4597.086550][T22607] RDX: 0000000000000009 RSI: 000055f53af880c0 RDI: 0000000000000005
[ 4597.086852][T22607] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[ 4597.087180][T22607] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f1858566700
[ 4597.087475][T22607] R13: 000055f53af880c0 R14: 0000000000000005 R15: 000055f53aac2910
| [ 4636.971157][T22607] ------------[ cut here ]------------
| [4636.971578][T22607] WARNING: CPU: 0 PID: 22607 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:10596) 
| [ 4636.971995][T22607] Modules linked in: cls_bpf netdevsim psample dccp_ipv6 dccp_ipv4 dccp act_gact cls_flower sch_ingress sch_fq vxlan ip6t_rpfilter xfrm_user l2tp_ip6 l2tp_eth l2tp_ip l2tp_netlink l2tp_core pktgen nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_REJECT ipt_REJECT nft_compat nf_tables
| [ 4636.973594][T22607] Tainted: [W]=WARN
[ 4636.973758][T22607] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[4636.974016][T22607] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 4636.974299][T22607] Code: 00 e8 13 47 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 5f 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   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 5f 99 00       	call   0x995fb9
  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
[ 4636.975063][T22607] RSP: 0018:ffffc90000d47528 EFLAGS: 00010246
[ 4636.975338][T22607] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4636.975643][T22607] RDX: 0000000000000000 RSI: ffff88800bd12cd0 RDI: ffff888010d350f8
[ 4636.975949][T22607] RBP: ffffffffb4453580 R08: 0000000000000000 R09: fffffbfff6442504
[ 4636.976279][T22607] R10: ffffffffb2212827 R11: ffff888010d345c0 R12: 0000000000000000
[ 4636.976595][T22607] R13: ffff88800bd12130 R14: ffff88800bd12008 R15: ffff88800bd12000
[ 4636.976901][T22607] FS:  00007f18666ca1c0(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
[ 4636.977265][T22607] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4636.977521][T22607] CR2: 00007f86973e1960 CR3: 0000000009ee2003 CR4: 0000000000772ef0
[ 4636.977834][T22607] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4636.978319][T22607] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4636.978626][T22607] PKRU: 55555554
[ 4636.978783][T22607] Call Trace:
[ 4636.978942][T22607]  <TASK>
[4636.979051][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4636.979270][T22607] ? __warn (kernel/panic.c:748) 
[4636.979436][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4636.979645][T22607] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[4636.979859][T22607] ? handle_bug (arch/x86/kernel/traps.c:285) 
[4636.980018][T22607] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[4636.980239][T22607] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[4636.980464][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4636.980673][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[4636.980892][T22607] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[4636.981165][T22607] ? _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) 
[4636.981389][T22607] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[4636.981603][T22607] register_netdevice (net/core/dev.c:11033) 
[4636.981816][T22607] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[4636.982022][T22607] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[4636.982252][T22607] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[4636.982481][T22607] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[4636.982746][T22607] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[4636.982911][T22607] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[4636.983191][T22607] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[4636.983456][T22607] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[4636.983721][T22607] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[4636.983945][T22607] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[4636.984217][T22607] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[4636.984428][T22607] ? 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)) 
[4636.984593][T22607] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[4636.984821][T22607] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[4636.985036][T22607] __driver_probe_device (drivers/base/dd.c:800) 
[4636.985258][T22607] driver_probe_device (drivers/base/dd.c:830) 
[4636.985471][T22607] __device_attach_driver (drivers/base/dd.c:959) 
[4636.985681][T22607] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[4636.985935][T22607] bus_for_each_drv (drivers/base/bus.c:462) 
[4636.986150][T22607] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[4636.986356][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4636.986564][T22607] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4636.986771][T22607] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[4636.986991][T22607] __device_attach (drivers/base/dd.c:1030) 
[4636.987206][T22607] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[4636.987412][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4636.987619][T22607] ? 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) 
[4636.987832][T22607] bus_probe_device (drivers/base/bus.c:537) 
[4636.988042][T22607] device_add (drivers/base/core.c:3672) 
[4636.988262][T22607] ? __pfx_device_add (drivers/base/core.c:3548) 
[4636.988475][T22607] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[4636.988694][T22607] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[4636.988963][T22607] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[4636.989238][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4636.989443][T22607] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[4636.989656][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4636.989861][T22607] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[4636.990091][T22607] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[4636.990260][T22607] ? __pfx_vfs_write (fs/read_write.c:660) 
[4636.990472][T22607] ? __lock_release (kernel/locking/lockdep.c:5527) 
[4636.990676][T22607] ? 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) 
[4636.990891][T22607] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[4636.991117][T22607] ksys_write (fs/read_write.c:731) 
[4636.991277][T22607] ? __pfx_ksys_write (fs/read_write.c:721) 
[4636.991486][T22607] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[4636.991703][T22607] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4636.991913][T22607] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4636.992185][T22607] RIP: 0033:0x7f18668e4b77
[ 4636.992397][T22607] 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
[ 4636.993127][T22607] RSP: 002b:00007ffedd8a40c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4636.993435][T22607] RAX: ffffffffffffffda RBX: 00007f18666ca140 RCX: 00007f18668e4b77
[ 4636.993740][T22607] RDX: 0000000000000009 RSI: 000055f53af8e820 RDI: 0000000000000005
[ 4636.994044][T22607] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[ 4636.994368][T22607] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f1858566700
[ 4636.994678][T22607] R13: 000055f53af8e820 R14: 0000000000000005 R15: 000055f53aac2910
| [ 4649.026598][T22607] ------------[ cut here ]------------
| [4649.026987][T22607] WARNING: CPU: 3 PID: 22607 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:10596) 
| [ 4649.027458][T22607] Modules linked in: cls_bpf netdevsim psample dccp_ipv6 dccp_ipv4 dccp act_gact cls_flower sch_ingress sch_fq vxlan ip6t_rpfilter xfrm_user l2tp_ip6 l2tp_eth l2tp_ip l2tp_netlink l2tp_core pktgen nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_REJECT ipt_REJECT nft_compat nf_tables
| [ 4649.029193][T22607] Tainted: [W]=WARN
[ 4649.029371][T22607] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[4649.029653][T22607] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 4649.029943][T22607] Code: 00 e8 13 47 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 5f 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   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 5f 99 00       	call   0x995fb9
  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
[ 4649.030710][T22607] RSP: 0018:ffffc90000d47528 EFLAGS: 00010246
[ 4649.031219][T22607] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4649.031532][T22607] RDX: 0000000000000000 RSI: ffff888012512cd0 RDI: ffff888010d350f8
[ 4649.031847][T22607] RBP: ffffffffb4453580 R08: 0000000000000000 R09: fffffbfff6442504
[ 4649.032175][T22607] R10: ffffffffb2212827 R11: ffff888010d345c0 R12: 0000000000000000
[ 4649.032491][T22607] R13: ffff888012512130 R14: ffff888012512008 R15: ffff888012512000
[ 4649.032803][T22607] FS:  00007f18666ca1c0(0000) GS:ffff88806cf80000(0000) knlGS:0000000000000000
[ 4649.033179][T22607] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4649.033445][T22607] CR2: 00007f185910d0b0 CR3: 0000000009ee2003 CR4: 0000000000772ef0
[ 4649.033764][T22607] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4649.034087][T22607] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4649.034422][T22607] PKRU: 55555554
[ 4649.034617][T22607] Call Trace:
[ 4649.034781][T22607]  <TASK>
[4649.034891][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4649.035121][T22607] ? __warn (kernel/panic.c:748) 
[4649.035286][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4649.035503][T22607] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[4649.035726][T22607] ? handle_bug (arch/x86/kernel/traps.c:285) 
[4649.035895][T22607] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[4649.036121][T22607] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[4649.036354][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4649.036574][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[4649.036793][T22607] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[4649.037062][T22607] ? _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) 
[4649.037310][T22607] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[4649.037548][T22607] register_netdevice (net/core/dev.c:11033) 
[4649.037785][T22607] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[4649.038022][T22607] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[4649.038310][T22607] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[4649.038556][T22607] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[4649.038844][T22607] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[4649.039023][T22607] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[4649.039329][T22607] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[4649.039623][T22607] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[4649.039921][T22607] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[4649.040168][T22607] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[4649.040454][T22607] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[4649.040682][T22607] ? 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)) 
[4649.040856][T22607] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[4649.041109][T22607] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[4649.041347][T22607] __driver_probe_device (drivers/base/dd.c:800) 
[4649.041585][T22607] driver_probe_device (drivers/base/dd.c:830) 
[4649.041813][T22607] __device_attach_driver (drivers/base/dd.c:959) 
[4649.042040][T22607] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[4649.042325][T22607] bus_for_each_drv (drivers/base/bus.c:462) 
[4649.042554][T22607] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[4649.042779][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4649.043005][T22607] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4649.043247][T22607] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[4649.043474][T22607] __device_attach (drivers/base/dd.c:1030) 
[4649.043699][T22607] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[4649.043922][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4649.044159][T22607] ? 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) 
[4649.044392][T22607] bus_probe_device (drivers/base/bus.c:537) 
[4649.044632][T22607] device_add (drivers/base/core.c:3672) 
[4649.044868][T22607] ? __pfx_device_add (drivers/base/core.c:3548) 
[4649.045094][T22607] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[4649.045331][T22607] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[4649.045622][T22607] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[4649.045898][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4649.046125][T22607] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[4649.046355][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4649.046580][T22607] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[4649.046811][T22607] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[4649.046991][T22607] ? __pfx_vfs_write (fs/read_write.c:660) 
[4649.047234][T22607] ? __lock_release (kernel/locking/lockdep.c:5527) 
[4649.047451][T22607] ? 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) 
[4649.047681][T22607] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[4649.047916][T22607] ksys_write (fs/read_write.c:731) 
[4649.048103][T22607] ? __pfx_ksys_write (fs/read_write.c:721) 
[4649.048332][T22607] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[4649.048568][T22607] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4649.048803][T22607] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4649.049089][T22607] RIP: 0033:0x7f18668e4b77
[ 4649.049319][T22607] 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
[ 4649.050113][T22607] RSP: 002b:00007ffedd8a40c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4649.050470][T22607] RAX: ffffffffffffffda RBX: 00007f18666ca140 RCX: 00007f18668e4b77
[ 4649.050803][T22607] RDX: 0000000000000009 RSI: 000055f53af8e820 RDI: 0000000000000005
[ 4649.051157][T22607] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[ 4649.051501][T22607] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f1858566700
[ 4649.051833][T22607] R13: 000055f53af8e820 R14: 0000000000000005 R15: 000055f53aac2910
| [ 4678.923290][T22607] ------------[ cut here ]------------
| [4678.923686][T22607] WARNING: CPU: 2 PID: 22607 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:10596) 
| [ 4678.924148][T22607] Modules linked in: cls_bpf netdevsim psample dccp_ipv6 dccp_ipv4 dccp act_gact cls_flower sch_ingress sch_fq vxlan ip6t_rpfilter xfrm_user l2tp_ip6 l2tp_eth l2tp_ip l2tp_netlink l2tp_core pktgen nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_REJECT ipt_REJECT nft_compat nf_tables
| [ 4678.925786][T22607] Tainted: [W]=WARN
[ 4678.925962][T22607] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[4678.926256][T22607] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 4678.926543][T22607] Code: 00 e8 13 47 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 5f 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   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 5f 99 00       	call   0x995fb9
  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
[ 4678.927316][T22607] RSP: 0018:ffffc90000d47528 EFLAGS: 00010246
[ 4678.927598][T22607] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4678.927923][T22607] RDX: 0000000000000000 RSI: ffff88800bd12cd0 RDI: ffff888010d350f8
[ 4678.928266][T22607] RBP: ffffffffb4453580 R08: 0000000000000000 R09: fffffbfff6442504
[ 4678.928592][T22607] R10: ffffffffb2212827 R11: ffff888010d345c0 R12: 0000000000000000
[ 4678.928916][T22607] R13: ffff88800bd12130 R14: ffff88800bd12008 R15: ffff88800bd12000
[ 4678.929261][T22607] FS:  00007f18666ca1c0(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
[ 4678.929852][T22607] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4678.930152][T22607] CR2: 000055f53af9c8a8 CR3: 0000000009ee2006 CR4: 0000000000772ef0
[ 4678.930483][T22607] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4678.930804][T22607] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4678.931143][T22607] PKRU: 55555554
[ 4678.931317][T22607] Call Trace:
[ 4678.931493][T22607]  <TASK>
[4678.931621][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4678.931849][T22607] ? __warn (kernel/panic.c:748) 
[4678.932027][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4678.932270][T22607] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[4678.932513][T22607] ? handle_bug (arch/x86/kernel/traps.c:285) 
[4678.932692][T22607] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[4678.932916][T22607] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[4678.933171][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4678.933397][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[4678.933665][T22607] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[4678.933947][T22607] ? _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) 
[4678.934195][T22607] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[4678.934436][T22607] register_netdevice (net/core/dev.c:11033) 
[4678.934668][T22607] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[4678.934887][T22607] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[4678.935140][T22607] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[4678.935387][T22607] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[4678.935669][T22607] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[4678.935848][T22607] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[4678.936150][T22607] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[4678.936436][T22607] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[4678.936723][T22607] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[4678.936967][T22607] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[4678.937257][T22607] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[4678.937485][T22607] ? 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)) 
[4678.937660][T22607] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[4678.937893][T22607] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[4678.938137][T22607] __driver_probe_device (drivers/base/dd.c:800) 
[4678.938365][T22607] driver_probe_device (drivers/base/dd.c:830) 
[4678.938596][T22607] __device_attach_driver (drivers/base/dd.c:959) 
[4678.938823][T22607] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[4678.939107][T22607] bus_for_each_drv (drivers/base/bus.c:462) 
[4678.939335][T22607] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[4678.939555][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4678.939779][T22607] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4678.940000][T22607] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[4678.940247][T22607] __device_attach (drivers/base/dd.c:1030) 
[4678.940469][T22607] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[4678.940690][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4678.940910][T22607] ? 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) 
[4678.941151][T22607] bus_probe_device (drivers/base/bus.c:537) 
[4678.941376][T22607] device_add (drivers/base/core.c:3672) 
[4678.941600][T22607] ? __pfx_device_add (drivers/base/core.c:3548) 
[4678.941832][T22607] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[4678.942078][T22607] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[4678.942365][T22607] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[4678.942650][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4678.942867][T22607] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[4678.943106][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4678.943331][T22607] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[4678.943557][T22607] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[4678.943739][T22607] ? __pfx_vfs_write (fs/read_write.c:660) 
[4678.943964][T22607] ? __lock_release (kernel/locking/lockdep.c:5527) 
[4678.944194][T22607] ? 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) 
[4678.944429][T22607] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[4678.944658][T22607] ksys_write (fs/read_write.c:731) 
[4678.944832][T22607] ? __pfx_ksys_write (fs/read_write.c:721) 
[4678.945127][T22607] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[4678.945362][T22607] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4678.945587][T22607] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4678.945856][T22607] RIP: 0033:0x7f18668e4b77
[ 4678.946093][T22607] 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
[ 4678.946825][T22607] RSP: 002b:00007ffedd8a40c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4678.947159][T22607] RAX: ffffffffffffffda RBX: 00007f18666ca140 RCX: 00007f18668e4b77
[ 4678.947481][T22607] RDX: 0000000000000009 RSI: 000055f53af924a0 RDI: 0000000000000005
[ 4678.947796][T22607] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[ 4678.948129][T22607] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f1858566700
[ 4678.948451][T22607] R13: 000055f53af924a0 R14: 0000000000000005 R15: 000055f53aac2910
| [ 4695.186802][T22607] ------------[ cut here ]------------
| [4695.187217][T22607] WARNING: CPU: 3 PID: 22607 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:10596) 
| [ 4695.187645][T22607] Modules linked in: cls_bpf netdevsim psample dccp_ipv6 dccp_ipv4 dccp act_gact cls_flower sch_ingress sch_fq vxlan ip6t_rpfilter xfrm_user l2tp_ip6 l2tp_eth l2tp_ip l2tp_netlink l2tp_core pktgen nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_REJECT ipt_REJECT nft_compat nf_tables
| [ 4695.189365][T22607] Tainted: [W]=WARN
[ 4695.189526][T22607] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[4695.189787][T22607] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 4695.190062][T22607] Code: 00 e8 13 47 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 5f 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   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 5f 99 00       	call   0x995fb9
  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
[ 4695.190824][T22607] RSP: 0018:ffffc90000d47528 EFLAGS: 00010246
[ 4695.191099][T22607] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4695.191408][T22607] RDX: 0000000000000000 RSI: ffff888011522cd0 RDI: ffff888010d350f8
[ 4695.191719][T22607] RBP: ffffffffb4453580 R08: 0000000000000000 R09: fffffbfff6442504
[ 4695.192035][T22607] R10: ffffffffb2212827 R11: ffff888010d345c0 R12: 0000000000000000
[ 4695.192353][T22607] R13: ffff888011522130 R14: ffff888011522008 R15: ffff888011522000
[ 4695.192664][T22607] FS:  00007f18666ca1c0(0000) GS:ffff88806cf80000(0000) knlGS:0000000000000000
[ 4695.193023][T22607] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4695.193295][T22607] CR2: 0000560e7a7d3830 CR3: 0000000009ee2004 CR4: 0000000000772ef0
[ 4695.193607][T22607] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4695.193915][T22607] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4695.194233][T22607] PKRU: 55555554
[ 4695.194408][T22607] Call Trace:
[ 4695.194569][T22607]  <TASK>
[4695.194678][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4695.194899][T22607] ? __warn (kernel/panic.c:748) 
[4695.195074][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4695.195286][T22607] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[4695.195503][T22607] ? handle_bug (arch/x86/kernel/traps.c:285) 
[4695.195667][T22607] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[4695.195878][T22607] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[4695.196111][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4695.196328][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[4695.196544][T22607] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[4695.196810][T22607] ? _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) 
[4695.197027][T22607] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[4695.197251][T22607] register_netdevice (net/core/dev.c:11033) 
[4695.197467][T22607] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[4695.197677][T22607] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[4695.197903][T22607] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[4695.198141][T22607] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[4695.198411][T22607] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[4695.198576][T22607] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[4695.198854][T22607] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[4695.199136][T22607] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[4695.199411][T22607] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[4695.199632][T22607] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[4695.199895][T22607] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[4695.200114][T22607] ? 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)) 
[4695.200278][T22607] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[4695.200501][T22607] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[4695.200727][T22607] __driver_probe_device (drivers/base/dd.c:800) 
[4695.200938][T22607] driver_probe_device (drivers/base/dd.c:830) 
[4695.201154][T22607] __device_attach_driver (drivers/base/dd.c:959) 
[4695.201365][T22607] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[4695.201621][T22607] bus_for_each_drv (drivers/base/bus.c:462) 
[4695.201836][T22607] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[4695.202043][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4695.202262][T22607] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4695.202470][T22607] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[4695.202686][T22607] __device_attach (drivers/base/dd.c:1030) 
[4695.202901][T22607] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[4695.203123][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4695.203331][T22607] ? 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) 
[4695.203548][T22607] bus_probe_device (drivers/base/bus.c:537) 
[4695.203764][T22607] device_add (drivers/base/core.c:3672) 
[4695.203980][T22607] ? __pfx_device_add (drivers/base/core.c:3548) 
[4695.204194][T22607] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[4695.204426][T22607] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[4695.204699][T22607] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[4695.204970][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4695.205183][T22607] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[4695.205399][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4695.205604][T22607] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[4695.205817][T22607] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[4695.205988][T22607] ? __pfx_vfs_write (fs/read_write.c:660) 
[4695.206200][T22607] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[4695.206423][T22607] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:885) 
[4695.206690][T22607] ksys_write (fs/read_write.c:731) 
[4695.206853][T22607] ? __pfx_ksys_write (fs/read_write.c:721) 
[4695.207060][T22607] ? kernfs_fop_llseek (fs/kernfs/file.c:891) 
[4695.207285][T22607] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4695.207500][T22607] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4695.207755][T22607] RIP: 0033:0x7f18668e4b77
[ 4695.207964][T22607] 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
[ 4695.208681][T22607] RSP: 002b:00007ffedd8a3f28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4695.208992][T22607] RAX: ffffffffffffffda RBX: 00007f18666ca140 RCX: 00007f18668e4b77
[ 4695.209303][T22607] RDX: 0000000000000009 RSI: 000055f53af924a0 RDI: 0000000000000005
[ 4695.209605][T22607] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[ 4695.209913][T22607] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f1858566940
[ 4695.210226][T22607] R13: 000055f53af924a0 R14: 0000000000000005 R15: 000055f53aac2910
| [ 4708.438148][T22607] ------------[ cut here ]------------
| [4708.438566][T22607] WARNING: CPU: 1 PID: 22607 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:10596) 
| [ 4708.439149][T22607] Modules linked in: cls_bpf netdevsim psample dccp_ipv6 dccp_ipv4 dccp act_gact cls_flower sch_ingress sch_fq vxlan ip6t_rpfilter xfrm_user l2tp_ip6 l2tp_eth l2tp_ip l2tp_netlink l2tp_core pktgen nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_REJECT ipt_REJECT nft_compat nf_tables
| [ 4708.440780][T22607] Tainted: [W]=WARN
[ 4708.441012][T22607] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[4708.441433][T22607] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 4708.441732][T22607] Code: 00 e8 13 47 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 5f 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   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 5f 99 00       	call   0x995fb9
  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
[ 4708.442559][T22607] RSP: 0018:ffffc90000d47528 EFLAGS: 00010246
[ 4708.442840][T22607] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4708.443164][T22607] RDX: 0000000000000000 RSI: ffff88800bd12cd0 RDI: ffff888010d350f8
[ 4708.443487][T22607] RBP: ffffffffb4453580 R08: 0000000000000000 R09: fffffbfff6442504
[ 4708.443805][T22607] R10: ffffffffb2212827 R11: ffff888010d345c0 R12: 0000000000000000
[ 4708.444131][T22607] R13: ffff88800bd12130 R14: ffff88800bd12008 R15: ffff88800bd12000
[ 4708.444467][T22607] FS:  00007f18666ca1c0(0000) GS:ffff88806ce80000(0000) knlGS:0000000000000000
[ 4708.444828][T22607] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4708.445126][T22607] CR2: 0000560e7a815c48 CR3: 0000000009ee2003 CR4: 0000000000772ef0
[ 4708.445450][T22607] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4708.445772][T22607] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4708.446101][T22607] PKRU: 55555554
[ 4708.446261][T22607] Call Trace:
[ 4708.446426][T22607]  <TASK>
[4708.446543][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4708.446758][T22607] ? __warn (kernel/panic.c:748) 
[4708.446934][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4708.447171][T22607] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[4708.447393][T22607] ? handle_bug (arch/x86/kernel/traps.c:285) 
[4708.447563][T22607] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[4708.447778][T22607] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[4708.448011][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4708.448247][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[4708.448468][T22607] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[4708.448743][T22607] ? _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) 
[4708.448971][T22607] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[4708.449204][T22607] register_netdevice (net/core/dev.c:11033) 
[4708.449432][T22607] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[4708.449644][T22607] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[4708.449876][T22607] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[4708.450128][T22607] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[4708.450416][T22607] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[4708.450590][T22607] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[4708.450871][T22607] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[4708.451165][T22607] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[4708.451449][T22607] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[4708.451686][T22607] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[4708.451956][T22607] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[4708.452194][T22607] ? 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)) 
[4708.452355][T22607] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[4708.452574][T22607] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[4708.452793][T22607] __driver_probe_device (drivers/base/dd.c:800) 
[4708.453011][T22607] driver_probe_device (drivers/base/dd.c:830) 
[4708.453254][T22607] __device_attach_driver (drivers/base/dd.c:959) 
[4708.453474][T22607] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[4708.453738][T22607] bus_for_each_drv (drivers/base/bus.c:462) 
[4708.453958][T22607] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[4708.454183][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4708.454418][T22607] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4708.454626][T22607] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[4708.454855][T22607] __device_attach (drivers/base/dd.c:1030) 
[4708.455088][T22607] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[4708.455302][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4708.455517][T22607] ? 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) 
[4708.455733][T22607] bus_probe_device (drivers/base/bus.c:537) 
[4708.455943][T22607] device_add (drivers/base/core.c:3672) 
[4708.456174][T22607] ? __pfx_device_add (drivers/base/core.c:3548) 
[4708.456394][T22607] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[4708.456613][T22607] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[4708.456884][T22607] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[4708.457204][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4708.457421][T22607] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[4708.457648][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4708.457864][T22607] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[4708.458110][T22607] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[4708.458291][T22607] ? __pfx_vfs_write (fs/read_write.c:660) 
[4708.458497][T22607] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[4708.458719][T22607] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:885) 
[4708.458997][T22607] ksys_write (fs/read_write.c:731) 
[4708.459173][T22607] ? __pfx_ksys_write (fs/read_write.c:721) 
[4708.459384][T22607] ? kernfs_fop_llseek (fs/kernfs/file.c:891) 
[4708.459616][T22607] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4708.459842][T22607] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4708.460123][T22607] RIP: 0033:0x7f18668e4b77
[ 4708.460335][T22607] 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
[ 4708.461105][T22607] RSP: 002b:00007ffedd8a3f28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4708.461432][T22607] RAX: ffffffffffffffda RBX: 00007f18666ca140 RCX: 00007f18668e4b77
[ 4708.461737][T22607] RDX: 0000000000000009 RSI: 000055f53af924a0 RDI: 0000000000000005
[ 4708.462043][T22607] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[ 4708.462363][T22607] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f1858566940
[ 4708.462678][T22607] R13: 000055f53af924a0 R14: 0000000000000005 R15: 000055f53aac2910
| [ 4721.786503][T22607] ------------[ cut here ]------------
| [4721.786948][T22607] WARNING: CPU: 2 PID: 22607 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:10596) 
| [ 4721.787419][T22607] Modules linked in: cls_bpf netdevsim psample dccp_ipv6 dccp_ipv4 dccp act_gact cls_flower sch_ingress sch_fq vxlan ip6t_rpfilter xfrm_user l2tp_ip6 l2tp_eth l2tp_ip l2tp_netlink l2tp_core pktgen nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_REJECT ipt_REJECT nft_compat nf_tables
| [ 4721.789214][T22607] Tainted: [W]=WARN
[ 4721.789391][T22607] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[4721.789663][T22607] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 4721.789951][T22607] Code: 00 e8 13 47 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 5f 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   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 5f 99 00       	call   0x995fb9
  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
[ 4721.790704][T22607] RSP: 0018:ffffc90000d47528 EFLAGS: 00010246
[ 4721.790976][T22607] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4721.791321][T22607] RDX: 0000000000000000 RSI: ffff8880108dacd0 RDI: ffff888010d350f8
[ 4721.791642][T22607] RBP: ffffffffb4453580 R08: 0000000000000000 R09: fffffbfff6442504
[ 4721.791956][T22607] R10: ffffffffb2212827 R11: ffff888010d345c0 R12: 0000000000000000
[ 4721.792289][T22607] R13: ffff8880108da130 R14: ffff8880108da008 R15: ffff8880108da000
[ 4721.792610][T22607] FS:  00007f18666ca1c0(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
[ 4721.792984][T22607] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4721.793285][T22607] CR2: 00007f185871d870 CR3: 0000000009ee2004 CR4: 0000000000772ef0
[ 4721.793606][T22607] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4721.793926][T22607] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4721.794275][T22607] PKRU: 55555554
[ 4721.794447][T22607] Call Trace:
[ 4721.794619][T22607]  <TASK>
[4721.794740][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4721.794961][T22607] ? __warn (kernel/panic.c:748) 
[4721.795151][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4721.795374][T22607] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[4721.795604][T22607] ? handle_bug (arch/x86/kernel/traps.c:285) 
[4721.795779][T22607] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[4721.796001][T22607] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[4721.796251][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4721.796472][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[4721.796698][T22607] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[4721.796973][T22607] ? _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) 
[4721.797217][T22607] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[4721.797449][T22607] register_netdevice (net/core/dev.c:11033) 
[4721.797676][T22607] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[4721.797893][T22607] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[4721.798146][T22607] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[4721.798384][T22607] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[4721.798663][T22607] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[4721.798845][T22607] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[4721.799146][T22607] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[4721.799425][T22607] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[4721.799710][T22607] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[4721.799942][T22607] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[4721.800233][T22607] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[4721.800463][T22607] ? 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)) 
[4721.800636][T22607] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[4721.800866][T22607] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[4721.801115][T22607] __driver_probe_device (drivers/base/dd.c:800) 
[4721.801340][T22607] driver_probe_device (drivers/base/dd.c:830) 
[4721.801561][T22607] __device_attach_driver (drivers/base/dd.c:959) 
[4721.801784][T22607] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[4721.802058][T22607] bus_for_each_drv (drivers/base/bus.c:462) 
[4721.802308][T22607] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[4721.802531][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4721.802751][T22607] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4721.802970][T22607] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[4721.803209][T22607] __device_attach (drivers/base/dd.c:1030) 
[4721.803431][T22607] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[4721.803654][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4721.803875][T22607] ? 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) 
[4721.804115][T22607] bus_probe_device (drivers/base/bus.c:537) 
[4721.804347][T22607] device_add (drivers/base/core.c:3672) 
[4721.804572][T22607] ? __pfx_device_add (drivers/base/core.c:3548) 
[4721.804793][T22607] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[4721.805029][T22607] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[4721.805324][T22607] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[4721.805618][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4721.805835][T22607] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[4721.806064][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4721.806297][T22607] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[4721.806526][T22607] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[4721.806707][T22607] ? __pfx_vfs_write (fs/read_write.c:660) 
[4721.806927][T22607] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[4721.807179][T22607] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:885) 
[4721.807464][T22607] ksys_write (fs/read_write.c:731) 
[4721.807636][T22607] ? __pfx_ksys_write (fs/read_write.c:721) 
[4721.807857][T22607] ? kernfs_fop_llseek (fs/kernfs/file.c:891) 
[4721.808099][T22607] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4721.808327][T22607] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4721.808595][T22607] RIP: 0033:0x7f18668e4b77
[ 4721.808826][T22607] 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
[ 4721.809563][T22607] RSP: 002b:00007ffedd8a3f28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4721.809883][T22607] RAX: ffffffffffffffda RBX: 00007f18666ca140 RCX: 00007f18668e4b77
[ 4721.810223][T22607] RDX: 0000000000000009 RSI: 000055f53af924a0 RDI: 0000000000000005
[ 4721.810540][T22607] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[ 4721.810860][T22607] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f1858566940
[ 4721.811194][T22607] R13: 000055f53af924a0 R14: 0000000000000005 R15: 000055f53aac2910
| [ 4746.875298][T22607] ------------[ cut here ]------------
| [4746.875764][T22607] WARNING: CPU: 2 PID: 22607 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:10596) 
| [ 4746.876256][T22607] Modules linked in: cls_bpf netdevsim psample dccp_ipv6 dccp_ipv4 dccp act_gact cls_flower sch_ingress sch_fq vxlan ip6t_rpfilter xfrm_user l2tp_ip6 l2tp_eth l2tp_ip l2tp_netlink l2tp_core pktgen nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_REJECT ipt_REJECT nft_compat nf_tables
| [ 4746.877931][T22607] Tainted: [W]=WARN
[ 4746.878121][T22607] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[4746.878402][T22607] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 4746.878695][T22607] Code: 00 e8 13 47 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 5f 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   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 5f 99 00       	call   0x995fb9
  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
[ 4746.879463][T22607] RSP: 0018:ffffc90000d47528 EFLAGS: 00010246
[ 4746.879751][T22607] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4746.880093][T22607] RDX: 0000000000000000 RSI: ffff88800df12cd0 RDI: ffff888010d350f8
[ 4746.880430][T22607] RBP: ffffffffb4453580 R08: 0000000000000000 R09: fffffbfff6442504
[ 4746.880946][T22607] R10: ffffffffb2212827 R11: ffff888010d345c0 R12: 0000000000000000
[ 4746.881322][T22607] R13: ffff88800df12130 R14: ffff88800df12008 R15: ffff88800df12000
[ 4746.881686][T22607] FS:  00007f18666ca1c0(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
[ 4746.882111][T22607] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4746.882397][T22607] CR2: 00007f86973e1960 CR3: 0000000009ee2001 CR4: 0000000000772ef0
[ 4746.882773][T22607] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4746.883116][T22607] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4746.883446][T22607] PKRU: 55555554
[ 4746.883623][T22607] Call Trace:
[ 4746.883814][T22607]  <TASK>
[4746.883940][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4746.884210][T22607] ? __warn (kernel/panic.c:748) 
[4746.884402][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4746.884639][T22607] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[4746.884883][T22607] ? handle_bug (arch/x86/kernel/traps.c:285) 
[4746.885100][T22607] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[4746.885346][T22607] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[4746.885593][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4746.885822][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[4746.886065][T22607] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[4746.886367][T22607] ? _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) 
[4746.886605][T22607] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[4746.886841][T22607] register_netdevice (net/core/dev.c:11033) 
[4746.887087][T22607] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[4746.887314][T22607] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[4746.887562][T22607] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[4746.887815][T22607] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[4746.888113][T22607] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[4746.888298][T22607] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[4746.888597][T22607] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[4746.888891][T22607] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[4746.889221][T22607] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[4746.889476][T22607] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[4746.889765][T22607] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[4746.889998][T22607] ? 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)) 
[4746.890195][T22607] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[4746.890435][T22607] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[4746.890675][T22607] __driver_probe_device (drivers/base/dd.c:800) 
[4746.890909][T22607] driver_probe_device (drivers/base/dd.c:830) 
[4746.891161][T22607] __device_attach_driver (drivers/base/dd.c:959) 
[4746.891406][T22607] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[4746.891686][T22607] bus_for_each_drv (drivers/base/bus.c:462) 
[4746.891915][T22607] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[4746.892154][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4746.892383][T22607] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4746.892610][T22607] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[4746.892852][T22607] __device_attach (drivers/base/dd.c:1030) 
[4746.893106][T22607] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[4746.893336][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4746.893565][T22607] ? 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) 
[4746.893800][T22607] bus_probe_device (drivers/base/bus.c:537) 
[4746.894056][T22607] device_add (drivers/base/core.c:3672) 
[4746.894313][T22607] ? __pfx_device_add (drivers/base/core.c:3548) 
[4746.894550][T22607] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[4746.894798][T22607] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[4746.895108][T22607] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[4746.895417][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4746.895643][T22607] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[4746.895880][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4746.896115][T22607] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[4746.896357][T22607] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[4746.896541][T22607] ? __pfx_vfs_write (fs/read_write.c:660) 
[4746.896778][T22607] ? __lock_release (kernel/locking/lockdep.c:5527) 
[4746.897005][T22607] ? 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) 
[4746.897271][T22607] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[4746.897511][T22607] ksys_write (fs/read_write.c:731) 
[4746.897690][T22607] ? __pfx_ksys_write (fs/read_write.c:721) 
[4746.897923][T22607] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[4746.898180][T22607] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4746.898415][T22607] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4746.898714][T22607] RIP: 0033:0x7f18668e4b77
[ 4746.898953][T22607] 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
[ 4746.899736][T22607] RSP: 002b:00007ffedd8a40c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4746.900094][T22607] RAX: ffffffffffffffda RBX: 00007f18666ca140 RCX: 00007f18668e4b77
[ 4746.900423][T22607] RDX: 0000000000000009 RSI: 000055f53af998a0 RDI: 0000000000000005
[ 4746.900755][T22607] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[ 4746.901119][T22607] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f1858566940
[ 4746.901454][T22607] R13: 000055f53af998a0 R14: 0000000000000005 R15: 000055f53aac2910
| [ 4775.731381][T22607] ------------[ cut here ]------------
| [4775.731789][T22607] WARNING: CPU: 3 PID: 22607 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:10596) 
| [ 4775.733311][T22607] Modules linked in: cls_bpf netdevsim psample dccp_ipv6 dccp_ipv4 dccp act_gact cls_flower sch_ingress sch_fq vxlan ip6t_rpfilter xfrm_user l2tp_ip6 l2tp_eth l2tp_ip l2tp_netlink l2tp_core pktgen nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_REJECT ipt_REJECT nft_compat nf_tables
| [ 4775.735099][T22607] Tainted: [W]=WARN
[ 4775.735270][T22607] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[4775.735550][T22607] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 4775.735838][T22607] Code: 00 e8 13 47 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 5f 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   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 5f 99 00       	call   0x995fb9
  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
[ 4775.736622][T22607] RSP: 0018:ffffc90000d47528 EFLAGS: 00010246
[ 4775.736905][T22607] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4775.737252][T22607] RDX: 0000000000000000 RSI: ffff88800aa9acd0 RDI: ffff888010d350f8
[ 4775.737592][T22607] RBP: ffffffffb4453580 R08: 0000000000000000 R09: fffffbfff6442504
[ 4775.737927][T22607] R10: ffffffffb2212827 R11: ffff888010d345c0 R12: 0000000000000000
[ 4775.738270][T22607] R13: ffff88800aa9a130 R14: ffff88800aa9a008 R15: ffff88800aa9a000
[ 4775.738595][T22607] FS:  00007f18666ca1c0(0000) GS:ffff88806cf80000(0000) knlGS:0000000000000000
[ 4775.738967][T22607] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4775.739244][T22607] CR2: 0000560e7a7aa920 CR3: 0000000009ee2006 CR4: 0000000000772ef0
[ 4775.739568][T22607] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4775.739890][T22607] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4775.740220][T22607] PKRU: 55555554
[ 4775.740384][T22607] Call Trace:
[ 4775.740547][T22607]  <TASK>
[4775.740658][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4775.740877][T22607] ? __warn (kernel/panic.c:748) 
[4775.741045][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4775.741275][T22607] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[4775.741504][T22607] ? handle_bug (arch/x86/kernel/traps.c:285) 
[4775.741671][T22607] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[4775.741891][T22607] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[4775.742131][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4775.742352][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[4775.742575][T22607] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[4775.742853][T22607] ? _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) 
[4775.743088][T22607] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[4775.743312][T22607] register_netdevice (net/core/dev.c:11033) 
[4775.743569][T22607] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[4775.743785][T22607] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[4775.744038][T22607] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[4775.744284][T22607] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[4775.744566][T22607] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[4775.744737][T22607] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[4775.745029][T22607] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[4775.745326][T22607] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[4775.745613][T22607] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[4775.745851][T22607] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[4775.746146][T22607] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[4775.746373][T22607] ? 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)) 
[4775.746544][T22607] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[4775.746784][T22607] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[4775.747019][T22607] __driver_probe_device (drivers/base/dd.c:800) 
[4775.747258][T22607] driver_probe_device (drivers/base/dd.c:830) 
[4775.747487][T22607] __device_attach_driver (drivers/base/dd.c:959) 
[4775.747716][T22607] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[4775.747993][T22607] bus_for_each_drv (drivers/base/bus.c:462) 
[4775.748229][T22607] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[4775.748457][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4775.748686][T22607] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4775.748911][T22607] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[4775.749158][T22607] __device_attach (drivers/base/dd.c:1030) 
[4775.749391][T22607] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[4775.749615][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4775.749842][T22607] ? 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) 
[4775.750097][T22607] bus_probe_device (drivers/base/bus.c:537) 
[4775.750331][T22607] device_add (drivers/base/core.c:3672) 
[4775.750561][T22607] ? __pfx_device_add (drivers/base/core.c:3548) 
[4775.750787][T22607] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[4775.751027][T22607] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[4775.751328][T22607] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[4775.751622][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4775.751852][T22607] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[4775.752102][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4775.752330][T22607] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[4775.752563][T22607] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[4775.752743][T22607] ? __pfx_vfs_write (fs/read_write.c:660) 
[4775.753176][T22607] ? __lock_release (kernel/locking/lockdep.c:5527) 
[4775.753398][T22607] ? 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) 
[4775.753761][T22607] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[4775.754018][T22607] ksys_write (fs/read_write.c:731) 
[4775.754207][T22607] ? __pfx_ksys_write (fs/read_write.c:721) 
[4775.754436][T22607] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[4775.754678][T22607] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4775.755049][T22607] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4775.755353][T22607] RIP: 0033:0x7f18668e4b77
[ 4775.755588][T22607] 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
[ 4775.756380][T22607] RSP: 002b:00007ffedd8a40c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4775.756722][T22607] RAX: ffffffffffffffda RBX: 00007f18666ca140 RCX: 00007f18668e4b77
[ 4775.757059][T22607] RDX: 0000000000000009 RSI: 000055f53af998a0 RDI: 0000000000000005
[ 4775.757405][T22607] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[ 4775.757744][T22607] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f1858566940
[ 4775.758221][T22607] R13: 000055f53af998a0 R14: 0000000000000005 R15: 000055f53aac2910
| [ 4802.002969][T22607] ------------[ cut here ]------------
| [4802.003579][T22607] WARNING: CPU: 2 PID: 22607 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:10596) 
| [ 4802.004226][T22607] Modules linked in: cls_bpf netdevsim psample dccp_ipv6 dccp_ipv4 dccp act_gact cls_flower sch_ingress sch_fq vxlan ip6t_rpfilter xfrm_user l2tp_ip6 l2tp_eth l2tp_ip l2tp_netlink l2tp_core pktgen nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_REJECT ipt_REJECT nft_compat nf_tables
| [ 4802.006252][T22607] Tainted: [W]=WARN
[ 4802.006577][T22607] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[4802.007024][T22607] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 4802.007487][T22607] Code: 00 e8 13 47 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 5f 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   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 5f 99 00       	call   0x995fb9
  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
[ 4802.008396][T22607] RSP: 0018:ffffc90000d47528 EFLAGS: 00010246
[ 4802.008790][T22607] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4802.009229][T22607] RDX: 0000000000000000 RSI: ffff88800df12cd0 RDI: ffff888010d350f8
[ 4802.009577][T22607] RBP: ffffffffb4453580 R08: 0000000000000000 R09: fffffbfff6442504
[ 4802.009892][T22607] R10: ffffffffb2212827 R11: ffff888010d345c0 R12: 0000000000000000
[ 4802.010213][T22607] R13: ffff88800df12130 R14: ffff88800df12008 R15: ffff88800df12000
[ 4802.010709][T22607] FS:  00007f18666ca1c0(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
[ 4802.011099][T22607] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4802.011373][T22607] CR2: 00007f185871d870 CR3: 0000000009ee2005 CR4: 0000000000772ef0
[ 4802.011694][T22607] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4802.012018][T22607] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4802.012354][T22607] PKRU: 55555554
[ 4802.012530][T22607] Call Trace:
[ 4802.012719][T22607]  <TASK>
[4802.012838][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4802.013059][T22607] ? __warn (kernel/panic.c:748) 
[4802.013251][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4802.013475][T22607] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[4802.013706][T22607] ? handle_bug (arch/x86/kernel/traps.c:285) 
[4802.013911][T22607] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[4802.014146][T22607] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[4802.014385][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4802.014609][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[4802.014838][T22607] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[4802.015130][T22607] ? _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) 
[4802.015379][T22607] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[4802.015602][T22607] register_netdevice (net/core/dev.c:11033) 
[4802.015827][T22607] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[4802.016039][T22607] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[4802.016285][T22607] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[4802.016519][T22607] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[4802.016812][T22607] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[4802.016990][T22607] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[4802.017292][T22607] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[4802.017570][T22607] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[4802.017848][T22607] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[4802.018096][T22607] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[4802.018365][T22607] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[4802.018585][T22607] ? 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)) 
[4802.018750][T22607] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[4802.018977][T22607] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[4802.019237][T22607] __driver_probe_device (drivers/base/dd.c:800) 
[4802.019457][T22607] driver_probe_device (drivers/base/dd.c:830) 
[4802.019671][T22607] __device_attach_driver (drivers/base/dd.c:959) 
[4802.019890][T22607] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[4802.020156][T22607] bus_for_each_drv (drivers/base/bus.c:462) 
[4802.020393][T22607] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[4802.020608][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4802.020835][T22607] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4802.021053][T22607] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[4802.021292][T22607] __device_attach (drivers/base/dd.c:1030) 
[4802.021512][T22607] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[4802.021731][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4802.021951][T22607] ? 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) 
[4802.022189][T22607] bus_probe_device (drivers/base/bus.c:537) 
[4802.022418][T22607] device_add (drivers/base/core.c:3672) 
[4802.022640][T22607] ? __pfx_device_add (drivers/base/core.c:3548) 
[4802.022866][T22607] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[4802.023100][T22607] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[4802.023376][T22607] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[4802.023651][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4802.023889][T22607] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[4802.024129][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4802.024350][T22607] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[4802.024575][T22607] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[4802.024754][T22607] ? __pfx_vfs_write (fs/read_write.c:660) 
[4802.024971][T22607] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[4802.025219][T22607] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:885) 
[4802.025488][T22607] ksys_write (fs/read_write.c:731) 
[4802.025658][T22607] ? __pfx_ksys_write (fs/read_write.c:721) 
[4802.025894][T22607] ? kernfs_fop_llseek (fs/kernfs/file.c:891) 
[4802.026136][T22607] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4802.026358][T22607] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4802.026623][T22607] RIP: 0033:0x7f18668e4b77
[ 4802.026849][T22607] 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
[ 4802.027594][T22607] RSP: 002b:00007ffedd8a40c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4802.027916][T22607] RAX: ffffffffffffffda RBX: 00007f18666ca140 RCX: 00007f18668e4b77
[ 4802.028241][T22607] RDX: 0000000000000009 RSI: 000055f53af998a0 RDI: 0000000000000005
[ 4802.028557][T22607] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[ 4802.028881][T22607] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f1858566940
[ 4802.029199][T22607] R13: 000055f53af998a0 R14: 0000000000000005 R15: 000055f53aac2910
| [ 4813.915750][T22607] ------------[ cut here ]------------
| [4813.916171][T22607] WARNING: CPU: 0 PID: 22607 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:10596) 
| [ 4813.916592][T22607] Modules linked in: cls_bpf netdevsim psample dccp_ipv6 dccp_ipv4 dccp act_gact cls_flower sch_ingress sch_fq vxlan ip6t_rpfilter xfrm_user l2tp_ip6 l2tp_eth l2tp_ip l2tp_netlink l2tp_core pktgen nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_REJECT ipt_REJECT nft_compat nf_tables
| [ 4813.918173][T22607] Tainted: [W]=WARN
[ 4813.918335][T22607] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[4813.918594][T22607] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 4813.918860][T22607] Code: 00 e8 13 47 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 5f 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   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 5f 99 00       	call   0x995fb9
  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
[ 4813.919799][T22607] RSP: 0018:ffffc90000d47528 EFLAGS: 00010246
[ 4813.920062][T22607] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4813.920381][T22607] RDX: 0000000000000000 RSI: ffff8880108dacd0 RDI: ffff888010d350f8
[ 4813.920691][T22607] RBP: ffffffffb4453580 R08: 0000000000000000 R09: fffffbfff6442504
[ 4813.920998][T22607] R10: ffffffffb2212827 R11: ffff888010d345c0 R12: 0000000000000000
[ 4813.921315][T22607] R13: ffff8880108da130 R14: ffff8880108da008 R15: ffff8880108da000
[ 4813.921620][T22607] FS:  00007f18666ca1c0(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
[ 4813.921968][T22607] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4813.922235][T22607] CR2: 00007f185910d0b0 CR3: 0000000009ee2001 CR4: 0000000000772ef0
[ 4813.922546][T22607] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4813.922848][T22607] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4813.923163][T22607] PKRU: 55555554
[ 4813.923320][T22607] Call Trace:
[ 4813.923477][T22607]  <TASK>
[4813.923585][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4813.923820][T22607] ? __warn (kernel/panic.c:748) 
[4813.924000][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4813.924231][T22607] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[4813.924451][T22607] ? handle_bug (arch/x86/kernel/traps.c:285) 
[4813.924615][T22607] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[4813.924833][T22607] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[4813.925085][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4813.925300][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[4813.925543][T22607] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[4813.925803][T22607] ? _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) 
[4813.926013][T22607] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[4813.926236][T22607] register_netdevice (net/core/dev.c:11033) 
[4813.926449][T22607] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[4813.926651][T22607] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[4813.926876][T22607] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[4813.927107][T22607] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[4813.927373][T22607] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[4813.927531][T22607] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[4813.927797][T22607] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[4813.928060][T22607] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[4813.928364][T22607] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[4813.928586][T22607] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[4813.928859][T22607] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[4813.929093][T22607] ? 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)) 
[4813.929256][T22607] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[4813.929471][T22607] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[4813.929684][T22607] __driver_probe_device (drivers/base/dd.c:800) 
[4813.929896][T22607] driver_probe_device (drivers/base/dd.c:830) 
[4813.930113][T22607] __device_attach_driver (drivers/base/dd.c:959) 
[4813.930323][T22607] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[4813.930573][T22607] bus_for_each_drv (drivers/base/bus.c:462) 
[4813.930779][T22607] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[4813.930983][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4813.931195][T22607] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4813.931434][T22607] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[4813.931644][T22607] __device_attach (drivers/base/dd.c:1030) 
[4813.931851][T22607] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[4813.932053][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4813.932268][T22607] ? 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) 
[4813.932480][T22607] bus_probe_device (drivers/base/bus.c:537) 
[4813.932687][T22607] device_add (drivers/base/core.c:3672) 
[4813.932897][T22607] ? __pfx_device_add (drivers/base/core.c:3548) 
[4813.933113][T22607] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[4813.933330][T22607] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[4813.933594][T22607] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[4813.933899][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4813.934116][T22607] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[4813.934331][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4813.934544][T22607] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[4813.934760][T22607] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[4813.934937][T22607] ? __pfx_vfs_write (fs/read_write.c:660) 
[4813.935156][T22607] ? __lock_release (kernel/locking/lockdep.c:5527) 
[4813.935357][T22607] ? 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) 
[4813.935574][T22607] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[4813.935786][T22607] ksys_write (fs/read_write.c:731) 
[4813.935948][T22607] ? __pfx_ksys_write (fs/read_write.c:721) 
[4813.936165][T22607] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[4813.936382][T22607] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4813.936593][T22607] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4813.936843][T22607] RIP: 0033:0x7f18668e4b77
[ 4813.937053][T22607] 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
[ 4813.937772][T22607] RSP: 002b:00007ffedd8a40c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4813.938095][T22607] RAX: ffffffffffffffda RBX: 00007f18666ca140 RCX: 00007f18668e4b77
[ 4813.938397][T22607] RDX: 0000000000000009 RSI: 000055f53af998a0 RDI: 0000000000000005
[ 4813.938698][T22607] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[ 4813.939003][T22607] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f1858566940
[ 4813.939313][T22607] R13: 000055f53af998a0 R14: 0000000000000005 R15: 000055f53aac2910
| [ 4825.161136][T22607] ------------[ cut here ]------------
| [4825.161547][T22607] WARNING: CPU: 0 PID: 22607 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:10596) 
| [ 4825.162149][T22607] Modules linked in: cls_bpf netdevsim psample dccp_ipv6 dccp_ipv4 dccp act_gact cls_flower sch_ingress sch_fq vxlan ip6t_rpfilter xfrm_user l2tp_ip6 l2tp_eth l2tp_ip l2tp_netlink l2tp_core pktgen nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_REJECT ipt_REJECT nft_compat nf_tables
| [ 4825.163844][T22607] Tainted: [W]=WARN
[ 4825.164010][T22607] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[4825.164292][T22607] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 4825.164574][T22607] Code: 00 e8 13 47 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 5f 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   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 5f 99 00       	call   0x995fb9
  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
[ 4825.165332][T22607] RSP: 0018:ffffc90000d47528 EFLAGS: 00010246
[ 4825.165601][T22607] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4825.165917][T22607] RDX: 0000000000000000 RSI: ffff88800aa9acd0 RDI: ffff888010d350f8
[ 4825.166238][T22607] RBP: ffffffffb4453580 R08: 0000000000000000 R09: fffffbfff6442504
[ 4825.166557][T22607] R10: ffffffffb2212827 R11: ffff888010d345c0 R12: 0000000000000000
[ 4825.166870][T22607] R13: ffff88800aa9a130 R14: ffff88800aa9a008 R15: ffff88800aa9a000
[ 4825.167220][T22607] FS:  00007f18666ca1c0(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
[ 4825.167584][T22607] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4825.167853][T22607] CR2: 0000560e7a7e9868 CR3: 0000000009ee2003 CR4: 0000000000772ef0
[ 4825.168175][T22607] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4825.168484][T22607] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4825.168798][T22607] PKRU: 55555554
[ 4825.168957][T22607] Call Trace:
[ 4825.169125][T22607]  <TASK>
[4825.169236][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4825.169454][T22607] ? __warn (kernel/panic.c:748) 
[4825.169619][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4825.169835][T22607] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[4825.170054][T22607] ? handle_bug (arch/x86/kernel/traps.c:285) 
[4825.170229][T22607] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[4825.170443][T22607] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[4825.170670][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4825.170891][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[4825.171136][T22607] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[4825.171421][T22607] ? _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) 
[4825.171633][T22607] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[4825.171847][T22607] register_netdevice (net/core/dev.c:11033) 
[4825.172091][T22607] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[4825.172314][T22607] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[4825.172541][T22607] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[4825.172776][T22607] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[4825.173050][T22607] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[4825.173232][T22607] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[4825.173517][T22607] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[4825.173811][T22607] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[4825.174093][T22607] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[4825.174318][T22607] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[4825.174584][T22607] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[4825.174807][T22607] ? 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)) 
[4825.174964][T22607] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[4825.175187][T22607] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[4825.175407][T22607] __driver_probe_device (drivers/base/dd.c:800) 
[4825.175615][T22607] driver_probe_device (drivers/base/dd.c:830) 
[4825.175824][T22607] __device_attach_driver (drivers/base/dd.c:959) 
[4825.176052][T22607] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[4825.176321][T22607] bus_for_each_drv (drivers/base/bus.c:462) 
[4825.176538][T22607] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[4825.176749][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4825.176964][T22607] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4825.177204][T22607] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[4825.177417][T22607] __device_attach (drivers/base/dd.c:1030) 
[4825.177622][T22607] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[4825.177828][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4825.178035][T22607] ? 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) 
[4825.178258][T22607] bus_probe_device (drivers/base/bus.c:537) 
[4825.178478][T22607] device_add (drivers/base/core.c:3672) 
[4825.178688][T22607] ? __pfx_device_add (drivers/base/core.c:3548) 
[4825.178892][T22607] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[4825.179121][T22607] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[4825.179390][T22607] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[4825.179657][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4825.179868][T22607] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[4825.180091][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4825.180295][T22607] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[4825.180508][T22607] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[4825.180672][T22607] ? __pfx_vfs_write (fs/read_write.c:660) 
[4825.180874][T22607] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[4825.181100][T22607] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:885) 
[4825.181364][T22607] ksys_write (fs/read_write.c:731) 
[4825.181525][T22607] ? __pfx_ksys_write (fs/read_write.c:721) 
[4825.181731][T22607] ? kernfs_fop_llseek (fs/kernfs/file.c:891) 
[4825.181944][T22607] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4825.182161][T22607] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4825.182414][T22607] RIP: 0033:0x7f18668e4b77
[ 4825.182623][T22607] 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
[ 4825.183336][T22607] RSP: 002b:00007ffedd8a40c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4825.183665][T22607] RAX: ffffffffffffffda RBX: 00007f18666ca140 RCX: 00007f18668e4b77
[ 4825.183972][T22607] RDX: 0000000000000007 RSI: 000055f53af998a0 RDI: 0000000000000005
[ 4825.184293][T22607] RBP: 0000000000000007 R08: 0000000000000000 R09: 0000000000000000
[ 4825.184621][T22607] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f1858566940
[ 4825.184939][T22607] R13: 000055f53af998a0 R14: 0000000000000005 R15: 000055f53aac2910
| [ 4835.787734][T22607] ------------[ cut here ]------------
| [4835.788165][T22607] WARNING: CPU: 2 PID: 22607 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:10596) 
| [ 4835.788624][T22607] Modules linked in: cls_bpf netdevsim psample dccp_ipv6 dccp_ipv4 dccp act_gact cls_flower sch_ingress sch_fq vxlan ip6t_rpfilter xfrm_user l2tp_ip6 l2tp_eth l2tp_ip l2tp_netlink l2tp_core pktgen nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_REJECT ipt_REJECT nft_compat nf_tables
| [ 4835.790327][T22607] Tainted: [W]=WARN
[ 4835.790510][T22607] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[4835.790788][T22607] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 4835.791063][T22607] Code: 00 e8 13 47 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 5f 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   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 5f 99 00       	call   0x995fb9
  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
[ 4835.791795][T22607] RSP: 0018:ffffc90000d47528 EFLAGS: 00010246
[ 4835.792076][T22607] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4835.792402][T22607] RDX: 0000000000000000 RSI: ffff88800df12cd0 RDI: ffff888010d350f8
[ 4835.792721][T22607] RBP: ffffffffb4453580 R08: 0000000000000000 R09: fffffbfff6442504
[ 4835.793038][T22607] R10: ffffffffb2212827 R11: ffff888010d345c0 R12: 0000000000000000
[ 4835.793627][T22607] R13: ffff88800df12130 R14: ffff88800df12008 R15: ffff88800df12000
[ 4835.793981][T22607] FS:  00007f18666ca1c0(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
[ 4835.794393][T22607] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4835.794680][T22607] CR2: 00007fb89f7f4000 CR3: 0000000009ee2002 CR4: 0000000000772ef0
[ 4835.795040][T22607] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4835.795396][T22607] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4835.795722][T22607] PKRU: 55555554
[ 4835.795919][T22607] Call Trace:
[ 4835.796111][T22607]  <TASK>
[4835.796445][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4835.796686][T22607] ? __warn (kernel/panic.c:748) 
[4835.796879][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4835.797138][T22607] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[4835.797392][T22607] ? handle_bug (arch/x86/kernel/traps.c:285) 
[4835.797575][T22607] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[4835.797802][T22607] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[4835.798052][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4835.798307][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[4835.798549][T22607] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[4835.798835][T22607] ? _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) 
[4835.799082][T22607] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[4835.799333][T22607] register_netdevice (net/core/dev.c:11033) 
[4835.799588][T22607] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[4835.799813][T22607] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[4835.800060][T22607] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[4835.800320][T22607] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[4835.800607][T22607] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[4835.800791][T22607] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[4835.801100][T22607] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[4835.801396][T22607] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[4835.801692][T22607] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[4835.801934][T22607] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[4835.802234][T22607] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[4835.802465][T22607] ? 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)) 
[4835.802649][T22607] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[4835.802894][T22607] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[4835.803147][T22607] __driver_probe_device (drivers/base/dd.c:800) 
[4835.803395][T22607] driver_probe_device (drivers/base/dd.c:830) 
[4835.803635][T22607] __device_attach_driver (drivers/base/dd.c:959) 
[4835.803868][T22607] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[4835.804166][T22607] bus_for_each_drv (drivers/base/bus.c:462) 
[4835.804389][T22607] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[4835.804614][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4835.804842][T22607] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4835.805060][T22607] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[4835.805297][T22607] __device_attach (drivers/base/dd.c:1030) 
[4835.805517][T22607] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[4835.805736][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4835.805956][T22607] ? 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) 
[4835.806223][T22607] bus_probe_device (drivers/base/bus.c:537) 
[4835.806472][T22607] device_add (drivers/base/core.c:3672) 
[4835.806705][T22607] ? __pfx_device_add (drivers/base/core.c:3548) 
[4835.806934][T22607] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[4835.807200][T22607] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[4835.807498][T22607] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[4835.807783][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4835.808002][T22607] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[4835.808241][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4835.808467][T22607] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[4835.808699][T22607] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[4835.808880][T22607] ? __pfx_vfs_write (fs/read_write.c:660) 
[4835.809115][T22607] ? __lock_release (kernel/locking/lockdep.c:5527) 
[4835.809333][T22607] ? 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) 
[4835.809564][T22607] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[4835.809792][T22607] ksys_write (fs/read_write.c:731) 
[4835.809964][T22607] ? __pfx_ksys_write (fs/read_write.c:721) 
[4835.810195][T22607] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[4835.810435][T22607] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4835.810660][T22607] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4835.810925][T22607] RIP: 0033:0x7f18668e4b77
[ 4835.811246][T22607] 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
[ 4835.812549][T22607] RSP: 002b:00007ffedd8a40c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4835.812948][T22607] RAX: ffffffffffffffda RBX: 00007f18666ca140 RCX: 00007f18668e4b77
[ 4835.813300][T22607] RDX: 0000000000000009 RSI: 000055f53af998a0 RDI: 0000000000000005
[ 4835.813650][T22607] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[ 4835.813994][T22607] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f1858566940
[ 4835.814342][T22607] R13: 000055f53af998a0 R14: 0000000000000005 R15: 000055f53aac2910
| [ 4835.825015][T22607] ------------[ cut here ]------------
| [4835.825423][T22607] WARNING: CPU: 2 PID: 22607 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:10596) 
| [ 4835.825867][T22607] Modules linked in: cls_bpf netdevsim psample dccp_ipv6 dccp_ipv4 dccp act_gact cls_flower sch_ingress sch_fq vxlan ip6t_rpfilter xfrm_user l2tp_ip6 l2tp_eth l2tp_ip l2tp_netlink l2tp_core pktgen nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_REJECT ipt_REJECT nft_compat nf_tables
| [ 4835.827505][T22607] Tainted: [W]=WARN
[ 4835.827680][T22607] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[4835.827962][T22607] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 4835.828392][T22607] Code: 00 e8 13 47 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 5f 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   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 5f 99 00       	call   0x995fb9
  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
[ 4835.829265][T22607] RSP: 0018:ffffc90000d47528 EFLAGS: 00010246
[ 4835.829540][T22607] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4835.829857][T22607] RDX: 0000000000000000 RSI: ffff88800e212cd0 RDI: ffff888010d350f8
[ 4835.830308][T22607] RBP: ffffffffb4453580 R08: 0000000000000000 R09: fffffbfff6442504
[ 4835.830628][T22607] R10: ffffffffb2212827 R11: ffff888010d345c0 R12: 0000000000000000
[ 4835.830946][T22607] R13: ffff88800e212130 R14: ffff88800e212008 R15: ffff88800e212000
[ 4835.831405][T22607] FS:  00007f18666ca1c0(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
[ 4835.831780][T22607] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4835.832050][T22607] CR2: 00007fb89f7f4000 CR3: 0000000009ee2002 CR4: 0000000000772ef0
[ 4835.832504][T22607] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4835.832819][T22607] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4835.833150][T22607] PKRU: 55555554
[ 4835.833322][T22607] Call Trace:
[ 4835.833491][T22607]  <TASK>
[4835.833636][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4835.833877][T22607] ? __warn (kernel/panic.c:748) 
[4835.834057][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4835.834300][T22607] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[4835.834541][T22607] ? handle_bug (arch/x86/kernel/traps.c:285) 
[4835.834720][T22607] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[4835.835024][T22607] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[4835.835337][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4835.835629][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[4835.835924][T22607] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[4835.836416][T22607] ? _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) 
[4835.836677][T22607] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[4835.836903][T22607] register_netdevice (net/core/dev.c:11033) 
[4835.837188][T22607] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[4835.837409][T22607] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[4835.837819][T22607] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[4835.838131][T22607] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[4835.838493][T22607] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[4835.838673][T22607] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[4835.839094][T22607] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[4835.839380][T22607] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[4835.839744][T22607] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[4835.840178][T22607] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[4835.840490][T22607] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[4835.840755][T22607] ? 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)) 
[4835.840974][T22607] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[4835.841282][T22607] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[4835.841540][T22607] __driver_probe_device (drivers/base/dd.c:800) 
[4835.841763][T22607] driver_probe_device (drivers/base/dd.c:830) 
[4835.841984][T22607] __device_attach_driver (drivers/base/dd.c:959) 
[4835.842296][T22607] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[4835.842654][T22607] bus_for_each_drv (drivers/base/bus.c:462) 
[4835.842969][T22607] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[4835.843664][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4835.844050][T22607] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4835.844420][T22607] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[4835.844701][T22607] __device_attach (drivers/base/dd.c:1030) 
[4835.844924][T22607] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[4835.845286][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4835.845507][T22607] ? 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) 
[4835.845775][T22607] bus_probe_device (drivers/base/bus.c:537) 
[4835.846063][T22607] device_add (drivers/base/core.c:3672) 
[4835.846480][T22607] ? __pfx_device_add (drivers/base/core.c:3548) 
[4835.846764][T22607] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[4835.847057][T22607] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[4835.847556][T22607] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[4835.847839][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4835.848055][T22607] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[4835.848296][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4835.848637][T22607] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[4835.848927][T22607] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[4835.849164][T22607] ? __pfx_vfs_write (fs/read_write.c:660) 
[4835.849420][T22607] ? __lock_release (kernel/locking/lockdep.c:5527) 
[4835.849812][T22607] ? 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) 
[4835.850117][T22607] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[4835.850396][T22607] ksys_write (fs/read_write.c:731) 
[4835.850570][T22607] ? __pfx_ksys_write (fs/read_write.c:721) 
[4835.850806][T22607] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[4835.851233][T22607] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4835.851482][T22607] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4835.851753][T22607] RIP: 0033:0x7f18668e4b77
[ 4835.852185][T22607] 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
[ 4835.853029][T22607] RSP: 002b:00007ffedd8a40c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4835.853375][T22607] RAX: ffffffffffffffda RBX: 00007f18666ca140 RCX: 00007f18668e4b77
[ 4835.853719][T22607] RDX: 0000000000000009 RSI: 000055f53af998a0 RDI: 0000000000000005
[ 4835.854250][T22607] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[ 4835.854636][T22607] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f1858566940
[ 4835.854981][T22607] R13: 000055f53af998a0 R14: 0000000000000005 R15: 000055f53aac2910
| [ 4835.866121][T22607] ------------[ cut here ]------------
| [4835.866351][T22607] WARNING: CPU: 3 PID: 22607 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:10596) 
| [ 4835.866758][T22607] Modules linked in: cls_bpf netdevsim psample dccp_ipv6 dccp_ipv4 dccp act_gact cls_flower sch_ingress sch_fq vxlan ip6t_rpfilter xfrm_user l2tp_ip6 l2tp_eth l2tp_ip l2tp_netlink l2tp_core pktgen nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_REJECT ipt_REJECT nft_compat nf_tables
| [ 4835.868314][T22607] Tainted: [W]=WARN
[ 4835.868471][T22607] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[4835.868725][T22607] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[ 4835.868983][T22607] Code: 00 e8 13 47 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 5f 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:	13 47 fe             	adc    -0x2(%rdi),%eax
   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 5f 99 00       	call   0x995fb9
  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
[ 4835.869804][T22607] RSP: 0018:ffffc90000d47528 EFLAGS: 00010246
[ 4835.870075][T22607] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4835.870401][T22607] RDX: 0000000000000000 RSI: ffff88801d9b2cd0 RDI: ffff888010d350f8
[ 4835.870717][T22607] RBP: ffffffffb4453580 R08: 0000000000000000 R09: fffffbfff6442504
[ 4835.871033][T22607] R10: ffffffffb2212827 R11: ffff888010d345c0 R12: 0000000000000000
[ 4835.871350][T22607] R13: ffff88801d9b2130 R14: ffff88801d9b2008 R15: ffff88801d9b2000
[ 4835.871657][T22607] FS:  00007f18666ca1c0(0000) GS:ffff88806cf80000(0000) knlGS:0000000000000000
[ 4835.872026][T22607] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4835.872293][T22607] CR2: 00007f1858513840 CR3: 0000000009ee2004 CR4: 0000000000772ef0
[ 4835.872597][T22607] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4835.872896][T22607] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4835.873214][T22607] PKRU: 55555554
[ 4835.873368][T22607] Call Trace:
[ 4835.873526][T22607]  <TASK>
[4835.873675][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4835.873886][T22607] ? __warn (kernel/panic.c:748) 
[4835.874049][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4835.874271][T22607] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[4835.874489][T22607] ? handle_bug (arch/x86/kernel/traps.c:285) 
[4835.874650][T22607] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[4835.874871][T22607] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[4835.875103][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10596) 
[4835.875309][T22607] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10596) 
[4835.875522][T22607] ? __pfx___netdev_update_features (net/core/dev.c:10589) 
[4835.875805][T22607] ? _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) 
[4835.876021][T22607] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[4835.876253][T22607] register_netdevice (net/core/dev.c:11033) 
[4835.876474][T22607] ? __pfx_register_netdevice (net/core/dev.c:10911) 
[4835.876683][T22607] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[4835.876913][T22607] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[4835.877146][T22607] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[4835.877409][T22607] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[4835.877567][T22607] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[4835.877834][T22607] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[4835.878112][T22607] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[4835.878375][T22607] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[4835.878592][T22607] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[4835.878853][T22607] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[4835.879058][T22607] ? 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)) 
[4835.879225][T22607] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[4835.879445][T22607] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[4835.879657][T22607] __driver_probe_device (drivers/base/dd.c:800) 
[4835.879864][T22607] driver_probe_device (drivers/base/dd.c:830) 
[4835.880081][T22607] __device_attach_driver (drivers/base/dd.c:959) 
[4835.880290][T22607] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[4835.880540][T22607] bus_for_each_drv (drivers/base/bus.c:462) 
[4835.880766][T22607] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[4835.880977][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4835.881198][T22607] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4835.881406][T22607] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[4835.881622][T22607] __device_attach (drivers/base/dd.c:1030) 
[4835.881840][T22607] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[4835.882042][T22607] ? bus_to_subsys (drivers/base/bus.c:85) 
[4835.882259][T22607] ? 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) 
[4835.882477][T22607] bus_probe_device (drivers/base/bus.c:537) 
[4835.882685][T22607] device_add (drivers/base/core.c:3672) 
[4835.882892][T22607] ? __pfx_device_add (drivers/base/core.c:3548) 
[4835.883102][T22607] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[4835.883321][T22607] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[4835.883604][T22607] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[4835.883878][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4835.884100][T22607] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[4835.884317][T22607] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4835.884525][T22607] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[4835.884743][T22607] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[4835.884912][T22607] ? __pfx_vfs_write (fs/read_write.c:660) 
[4835.885145][T22607] ? __lock_release (kernel/locking/lockdep.c:5527) 
[4835.885359][T22607] ? 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) 
[4835.885577][T22607] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[4835.885787][T22607] ksys_write (fs/read_write.c:731) 
[4835.885945][T22607] ? __pfx_ksys_write (fs/read_write.c:721) 
[4835.886158][T22607] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[4835.886399][T22607] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4835.886612][T22607] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4835.886868][T22607] RIP: 0033:0x7f18668e4b77
[ 4835.887094][T22607] 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
[ 4835.887820][T22607] RSP: 002b:00007ffedd8a40c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4835.888134][T22607] RAX: ffffffffffffffda RBX: 00007f18666ca140 RCX: 00007f18668e4b77
[ 4835.888437][T22607] RDX: 0000000000000009 RSI: 000055f53af998a0 RDI: 0000000000000005
[ 4835.888743][T22607] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[ 4835.889045][T22607] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f1858566940


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