======================================
| [ 4661.039061][T25341] Initializing XFRM netlink socket
| [ 4663.584950][T22132] ------------[ cut here ]------------
| [4663.585463][T22132] WARNING: CPU: 3 PID: 22132 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [ 4663.585878][T22132] Modules linked in: netdevsim psample xfrm_user macsec vxlan ip6_gre ip_gre gre cls_u32 sch_htb sch_fq ip6t_rpfilter ipt_rpfilter nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_REJECT ipt_REJECT nft_compat nf_tables
[ 4663.587362][T22132] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[4663.587624][T22132] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4663.587891][T22132] Code: 00 e8 d3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 3b 99 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	d3 48 fe             	rorl   %cl,-0x2(%rax)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 3b 99 00       	call   0x993bb9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4663.588709][T22132] RSP: 0018:ffffc900022c7528 EFLAGS: 00010246
[ 4663.588974][T22132] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4663.589293][T22132] RDX: 0000000000000000 RSI: ffff88800c92acd0 RDI: ffff8880111350f8
[ 4663.589605][T22132] RBP: ffffffff93c53580 R08: 0000000000000000 R09: fffffbfff2342504
[ 4663.589912][T22132] R10: ffffffff91a12827 R11: ffff8880111345c0 R12: 0000000000000000
[ 4663.590217][T22132] R13: ffff88800c92a130 R14: ffff88800c92a008 R15: ffff88800c92a000
[ 4663.590537][T22132] FS:  00007f1037d3d740(0000) GS:ffff88806cf80000(0000) knlGS:0000000000000000
[ 4663.590897][T22132] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4663.591156][T22132] CR2: 000055837beaa760 CR3: 0000000017650004 CR4: 0000000000772ef0
[ 4663.591476][T22132] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4663.591781][T22132] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4663.592085][T22132] PKRU: 55555554
[ 4663.592250][T22132] Call Trace:
[ 4663.592432][T22132]  <TASK>
[4663.592545][T22132] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[4663.592754][T22132] ? __warn (kernel/panic.c:748) 
[4663.592913][T22132] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[4663.593120][T22132] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[4663.593342][T22132] ? handle_bug (arch/x86/kernel/traps.c:285) 
[4663.593500][T22132] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[4663.593708][T22132] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[4663.593931][T22132] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[4663.594137][T22132] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[4663.594360][T22132] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[4663.594619][T22132] ? _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) 
[4663.594829][T22132] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[4663.595041][T22132] register_netdevice (net/core/dev.c:11003) 
[4663.595261][T22132] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[4663.595473][T22132] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[4663.595692][T22132] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[4663.595911][T22132] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[4663.596174][T22132] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[4663.596343][T22132] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[4663.596618][T22132] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[4663.596881][T22132] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[4663.597145][T22132] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[4663.597376][T22132] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[4663.597637][T22132] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[4663.597845][T22132] ? 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)) 
[4663.598003][T22132] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[4663.598222][T22132] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[4663.598446][T22132] __driver_probe_device (drivers/base/dd.c:800) 
[4663.598660][T22132] driver_probe_device (drivers/base/dd.c:830) 
[4663.598867][T22132] __device_attach_driver (drivers/base/dd.c:959) 
[4663.599078][T22132] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[4663.599343][T22132] bus_for_each_drv (drivers/base/bus.c:462) 
[4663.599554][T22132] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[4663.599763][T22132] ? bus_to_subsys (drivers/base/bus.c:85) 
[4663.599968][T22132] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4663.600172][T22132] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[4663.600394][T22132] __device_attach (drivers/base/dd.c:1030) 
[4663.600601][T22132] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[4663.600807][T22132] ? bus_to_subsys (drivers/base/bus.c:85) 
[4663.601013][T22132] ? 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) 
[4663.601230][T22132] bus_probe_device (drivers/base/bus.c:537) 
[4663.601448][T22132] device_add (drivers/base/core.c:3672) 
[4663.601659][T22132] ? __pfx_device_add (drivers/base/core.c:3548) 
[4663.601864][T22132] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[4663.602081][T22132] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[4663.602366][T22132] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[4663.602638][T22132] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4663.602846][T22132] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[4663.603060][T22132] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4663.603264][T22132] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[4663.603488][T22132] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[4663.603654][T22132] ? __pfx_vfs_write (fs/read_write.c:660) 
[4663.603865][T22132] ? __lock_release (kernel/locking/lockdep.c:5527) 
[4663.604067][T22132] ? 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) 
[4663.604296][T22132] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[4663.604509][T22132] ksys_write (fs/read_write.c:731) 
[4663.604667][T22132] ? __pfx_ksys_write (fs/read_write.c:721) 
[4663.604873][T22132] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[4663.605091][T22132] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4663.605308][T22132] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4663.605560][T22132] RIP: 0033:0x7f1037e7eb77
[ 4663.605780][T22132] 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
[ 4663.606504][T22132] RSP: 002b:00007ffd1da38ec8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4663.606820][T22132] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f1037e7eb77
[ 4663.607130][T22132] RDX: 0000000000000002 RSI: 000055837beaa760 RDI: 0000000000000001
[ 4663.607446][T22132] RBP: 000055837beaa760 R08: 0000000000000000 R09: 00007f1037ef14e0
[ 4663.607753][T22132] R10: 00007f1037ef13e0 R11: 0000000000000246 R12: 0000000000000002
[ 4663.608059][T22132] R13: 00007f1037f3a760 R14: 0000000000000002 R15: 00007f1037f359c0
| [ 4670.643684][T22132] ------------[ cut here ]------------
| [4670.644109][T22132] WARNING: CPU: 0 PID: 22132 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [ 4670.644938][T22132] Modules linked in: netdevsim psample xfrm_user macsec vxlan ip6_gre ip_gre gre cls_u32 sch_htb sch_fq ip6t_rpfilter ipt_rpfilter nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_REJECT ipt_REJECT nft_compat nf_tables [last unloaded: netdevsim]
| [ 4670.646506][T22132] Tainted: [W]=WARN
[ 4670.646740][T22132] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[4670.647033][T22132] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4670.647333][T22132] Code: 00 e8 d3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 3b 99 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	d3 48 fe             	rorl   %cl,-0x2(%rax)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 3b 99 00       	call   0x993bb9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4670.648112][T22132] RSP: 0018:ffffc900022c7528 EFLAGS: 00010246
[ 4670.648417][T22132] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4670.648743][T22132] RDX: 0000000000000000 RSI: ffff88800a19acd0 RDI: ffff8880111350f8
[ 4670.649073][T22132] RBP: ffffffff93c53580 R08: 0000000000000000 R09: fffffbfff2342504
[ 4670.649404][T22132] R10: ffffffff91a12827 R11: ffff8880111345c0 R12: 0000000000000000
[ 4670.649733][T22132] R13: ffff88800a19a130 R14: ffff88800a19a008 R15: ffff88800a19a000
[ 4670.650056][T22132] FS:  00007f1037d3d740(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
[ 4670.650442][T22132] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4670.650716][T22132] CR2: 00007f1037dd9f00 CR3: 0000000017650006 CR4: 0000000000772ef0
[ 4670.651040][T22132] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4670.651374][T22132] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4670.651697][T22132] PKRU: 55555554
[ 4670.651867][T22132] Call Trace:
[ 4670.652031][T22132]  <TASK>
[4670.652153][T22132] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[4670.652388][T22132] ? __warn (kernel/panic.c:748) 
[4670.652557][T22132] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[4670.652800][T22132] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[4670.653030][T22132] ? handle_bug (arch/x86/kernel/traps.c:285) 
[4670.653204][T22132] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[4670.653440][T22132] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[4670.653682][T22132] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[4670.653914][T22132] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[4670.654139][T22132] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[4670.654425][T22132] ? _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) 
[4670.654649][T22132] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[4670.654874][T22132] register_netdevice (net/core/dev.c:11003) 
[4670.655097][T22132] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[4670.655321][T22132] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[4670.655553][T22132] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[4670.655796][T22132] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[4670.656072][T22132] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[4670.656242][T22132] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[4670.656535][T22132] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[4670.656809][T22132] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[4670.657083][T22132] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[4670.657328][T22132] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[4670.657600][T22132] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[4670.657822][T22132] ? 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)) 
[4670.657990][T22132] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[4670.658221][T22132] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[4670.658460][T22132] __driver_probe_device (drivers/base/dd.c:800) 
[4670.658681][T22132] driver_probe_device (drivers/base/dd.c:830) 
[4670.658905][T22132] __device_attach_driver (drivers/base/dd.c:959) 
[4670.659130][T22132] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[4670.659404][T22132] bus_for_each_drv (drivers/base/bus.c:462) 
[4670.659623][T22132] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[4670.659839][T22132] ? bus_to_subsys (drivers/base/bus.c:85) 
[4670.660058][T22132] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4670.660276][T22132] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[4670.660518][T22132] __device_attach (drivers/base/dd.c:1030) 
[4670.660740][T22132] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[4670.660956][T22132] ? bus_to_subsys (drivers/base/bus.c:85) 
[4670.661174][T22132] ? 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) 
[4670.661407][T22132] bus_probe_device (drivers/base/bus.c:537) 
[4670.661626][T22132] device_add (drivers/base/core.c:3672) 
[4670.661848][T22132] ? __pfx_device_add (drivers/base/core.c:3548) 
[4670.662066][T22132] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[4670.662312][T22132] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[4670.662623][T22132] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[4670.662919][T22132] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4670.663145][T22132] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[4670.663387][T22132] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4670.663611][T22132] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[4670.663850][T22132] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[4670.664028][T22132] ? __pfx_vfs_write (fs/read_write.c:660) 
[4670.664259][T22132] ? __lock_release (kernel/locking/lockdep.c:5527) 
[4670.664498][T22132] ? 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) 
[4670.664738][T22132] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[4670.664964][T22132] ksys_write (fs/read_write.c:731) 
[4670.665131][T22132] ? __pfx_ksys_write (fs/read_write.c:721) 
[4670.665356][T22132] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[4670.665586][T22132] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4670.665804][T22132] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4670.666071][T22132] RIP: 0033:0x7f1037e7eb77
[ 4670.666304][T22132] 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
[ 4670.667083][T22132] RSP: 002b:00007ffd1da39aa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4670.667428][T22132] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f1037e7eb77
[ 4670.667769][T22132] RDX: 0000000000000005 RSI: 000055837beaa760 RDI: 0000000000000001
[ 4670.668110][T22132] RBP: 000055837beaa760 R08: 0000000000000000 R09: 00007f1037ef14e0
[ 4670.668453][T22132] R10: 00007f1037ef13e0 R11: 0000000000000246 R12: 0000000000000005
[ 4670.668777][T22132] R13: 00007f1037f3a760 R14: 0000000000000005 R15: 00007f1037f359c0
| [ 4670.690679][T22132] ------------[ cut here ]------------
| [4670.691111][T22132] WARNING: CPU: 2 PID: 22132 at ./include/net/netdev_lock.h:52 __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
| [ 4670.691583][T22132] Modules linked in: netdevsim psample xfrm_user macsec vxlan ip6_gre ip_gre gre cls_u32 sch_htb sch_fq ip6t_rpfilter ipt_rpfilter nft_chain_nat xt_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_REJECT ipt_REJECT nft_compat nf_tables [last unloaded: netdevsim]
| [ 4670.693292][T22132] Tainted: [W]=WARN
[ 4670.693473][T22132] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[4670.693760][T22132] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4670.694052][T22132] Code: 00 e8 d3 48 fe ff 48 8b 5c 24 58 e9 87 fb ff ff 49 8d bf d0 0c 00 00 be ff ff ff ff e8 98 3b 99 00 85 c0 0f 85 99 00 00 00 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 20 48 c1 ea 03
All code
========
   0:	00 e8                	add    %ch,%al
   2:	d3 48 fe             	rorl   %cl,-0x2(%rax)
   5:	ff 48 8b             	decl   -0x75(%rax)
   8:	5c                   	pop    %rsp
   9:	24 58                	and    $0x58,%al
   b:	e9 87 fb ff ff       	jmp    0xfffffffffffffb97
  10:	49 8d bf d0 0c 00 00 	lea    0xcd0(%r15),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 98 3b 99 00       	call   0x993bb9
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 99 00 00 00    	jne    0xc2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  34:	fc ff df 
  37:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  3c:	48 c1 ea 03          	shr    $0x3,%rdx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   a:	fc ff df 
   d:	48 8b 54 24 20       	mov    0x20(%rsp),%rdx
  12:	48 c1 ea 03          	shr    $0x3,%rdx
[ 4670.694820][T22132] RSP: 0018:ffffc900022c7528 EFLAGS: 00010246
[ 4670.695116][T22132] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4670.695457][T22132] RDX: 0000000000000000 RSI: ffff888002402cd0 RDI: ffff8880111350f8
[ 4670.695785][T22132] RBP: ffffffff93c53580 R08: 0000000000000000 R09: fffffbfff2342504
[ 4670.696118][T22132] R10: ffffffff91a12827 R11: ffff8880111345c0 R12: 0000000000000000
[ 4670.696468][T22132] R13: ffff888002402130 R14: ffff888002402008 R15: ffff888002402000
[ 4670.696790][T22132] FS:  00007f1037d3d740(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
[ 4670.697157][T22132] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4670.697452][T22132] CR2: 0000565109bfafd8 CR3: 0000000017650001 CR4: 0000000000772ef0
[ 4670.697780][T22132] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4670.698108][T22132] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4670.698451][T22132] PKRU: 55555554
[ 4670.698625][T22132] Call Trace:
[ 4670.698807][T22132]  <TASK>
[4670.698931][T22132] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[4670.699157][T22132] ? __warn (kernel/panic.c:748) 
[4670.699343][T22132] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[4670.699571][T22132] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[4670.699825][T22132] ? handle_bug (arch/x86/kernel/traps.c:285) 
[4670.700007][T22132] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[4670.700230][T22132] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[4670.700478][T22132] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[4670.700741][T22132] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[4670.700972][T22132] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[4670.701264][T22132] ? _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) 
[4670.701509][T22132] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[4670.701748][T22132] register_netdevice (net/core/dev.c:11003) 
[4670.701980][T22132] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[4670.702206][T22132] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[4670.702475][T22132] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[4670.702727][T22132] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[4670.703013][T22132] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[4670.703194][T22132] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[4670.703497][T22132] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[4670.703784][T22132] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[4670.704074][T22132] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[4670.704326][T22132] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[4670.704612][T22132] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[4670.704841][T22132] ? 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)) 
[4670.705015][T22132] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[4670.705247][T22132] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[4670.705489][T22132] __driver_probe_device (drivers/base/dd.c:800) 
[4670.705717][T22132] driver_probe_device (drivers/base/dd.c:830) 
[4670.705945][T22132] __device_attach_driver (drivers/base/dd.c:959) 
[4670.706169][T22132] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[4670.706449][T22132] bus_for_each_drv (drivers/base/bus.c:462) 
[4670.706684][T22132] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[4670.706904][T22132] ? bus_to_subsys (drivers/base/bus.c:85) 
[4670.707119][T22132] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4670.707361][T22132] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[4670.707610][T22132] __device_attach (drivers/base/dd.c:1030) 
[4670.707834][T22132] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[4670.708053][T22132] ? bus_to_subsys (drivers/base/bus.c:85) 
[4670.708275][T22132] ? 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) 
[4670.708514][T22132] bus_probe_device (drivers/base/bus.c:537) 
[4670.708741][T22132] device_add (drivers/base/core.c:3672) 
[4670.708972][T22132] ? __pfx_device_add (drivers/base/core.c:3548) 
[4670.709193][T22132] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[4670.709441][T22132] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[4670.709724][T22132] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[4670.710007][T22132] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4670.710232][T22132] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[4670.710471][T22132] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4670.710691][T22132] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[4670.710924][T22132] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[4670.711116][T22132] ? __pfx_vfs_write (fs/read_write.c:660) 
[4670.711363][T22132] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[4670.711593][T22132] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4670.711826][T22132] ksys_write (fs/read_write.c:731) 
[4670.711998][T22132] ? __pfx_ksys_write (fs/read_write.c:721) 
[4670.712233][T22132] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4670.712479][T22132] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4670.712748][T22132] RIP: 0033:0x7f1037e7eb77
[ 4670.712974][T22132] 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
[ 4670.713716][T22132] RSP: 002b:00007ffd1da39d08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4670.714041][T22132] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f1037e7eb77
[ 4670.714369][T22132] RDX: 0000000000000005 RSI: 000055837beaa760 RDI: 0000000000000001
[ 4670.714695][T22132] RBP: 000055837beaa760 R08: 0000000000000000 R09: 00007f1037ef14e0
[ 4670.715014][T22132] R10: 00007f1037ef13e0 R11: 0000000000000246 R12: 0000000000000005


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