======================================
| [ 4686.221200][T25684] Initializing XFRM netlink socket
| [ 4688.729722][T22457] ------------[ cut here ]------------
| [4688.730288][T22457] WARNING: CPU: 0 PID: 22457 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) 
| [ 4688.730710][T22457] Modules linked in: netdevsim psample xfrm_user macsec vxlan ip_gre cls_u32 sch_htb dccp_ipv6 dccp_ipv4 dccp sch_etf sch_fq act_mirred cls_matchall ip6_gre gre sch_ingress pktgen 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: test_bpf]
[ 4688.732318][T22457] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[4688.732582][T22457] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4688.732848][T22457] 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
[ 4688.733587][T22457] RSP: 0018:ffffc90000c67528 EFLAGS: 00010246
[ 4688.733881][T22457] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4688.734214][T22457] RDX: 0000000000000000 RSI: ffff88800e3bacd0 RDI: ffff88801cd72e38
[ 4688.734532][T22457] RBP: ffffffff97053580 R08: 0000000000000000 R09: fffffbfff29c2504
[ 4688.734851][T22457] R10: ffffffff94e12827 R11: ffff88801cd72300 R12: 0000000000000000
[ 4688.735201][T22457] R13: ffff88800e3ba130 R14: ffff88800e3ba008 R15: ffff88800e3ba000
[ 4688.735671][T22457] FS:  00007f2010cfc740(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
[ 4688.736036][T22457] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4688.736298][T22457] CR2: 0000561024579760 CR3: 0000000011726004 CR4: 0000000000772ef0
[ 4688.736601][T22457] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4688.736900][T22457] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4688.737252][T22457] PKRU: 55555554
[ 4688.737417][T22457] Call Trace:
[ 4688.737578][T22457]  <TASK>
[4688.737694][T22457] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[4688.737908][T22457] ? __warn (kernel/panic.c:748) 
[4688.738081][T22457] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[4688.738291][T22457] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[4688.738505][T22457] ? handle_bug (arch/x86/kernel/traps.c:285) 
[4688.738665][T22457] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[4688.738871][T22457] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[4688.739102][T22457] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[4688.739327][T22457] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[4688.739536][T22457] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[4688.739791][T22457] ? _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) 
[4688.740008][T22457] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[4688.740218][T22457] register_netdevice (net/core/dev.c:11003) 
[4688.740451][T22457] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[4688.740659][T22457] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[4688.740882][T22457] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[4688.741123][T22457] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[4688.741397][T22457] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[4688.741559][T22457] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[4688.741830][T22457] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[4688.742112][T22457] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[4688.742384][T22457] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[4688.742603][T22457] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[4688.742863][T22457] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[4688.743084][T22457] ? 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)) 
[4688.743244][T22457] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[4688.743471][T22457] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[4688.743684][T22457] __driver_probe_device (drivers/base/dd.c:800) 
[4688.743888][T22457] driver_probe_device (drivers/base/dd.c:830) 
[4688.744099][T22457] __device_attach_driver (drivers/base/dd.c:959) 
[4688.744304][T22457] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[4688.744549][T22457] bus_for_each_drv (drivers/base/bus.c:462) 
[4688.744752][T22457] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[4688.744957][T22457] ? bus_to_subsys (drivers/base/bus.c:85) 
[4688.745162][T22457] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4688.745362][T22457] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[4688.745568][T22457] __device_attach (drivers/base/dd.c:1030) 
[4688.745767][T22457] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[4688.745984][T22457] ? bus_to_subsys (drivers/base/bus.c:85) 
[4688.746212][T22457] ? 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) 
[4688.746425][T22457] bus_probe_device (drivers/base/bus.c:537) 
[4688.746640][T22457] device_add (drivers/base/core.c:3672) 
[4688.746850][T22457] ? __pfx_device_add (drivers/base/core.c:3548) 
[4688.747067][T22457] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[4688.747293][T22457] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[4688.747563][T22457] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[4688.747831][T22457] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4688.748043][T22457] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[4688.748261][T22457] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4688.748477][T22457] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[4688.748702][T22457] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[4688.748893][T22457] ? __pfx_vfs_write (fs/read_write.c:660) 
[4688.749115][T22457] ? __lock_release (kernel/locking/lockdep.c:5527) 
[4688.749320][T22457] ? 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) 
[4688.749536][T22457] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[4688.749755][T22457] ksys_write (fs/read_write.c:731) 
[4688.749914][T22457] ? __pfx_ksys_write (fs/read_write.c:721) 
[4688.750138][T22457] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[4688.750358][T22457] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4688.750570][T22457] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4688.750827][T22457] RIP: 0033:0x7f2010e3db77
[ 4688.751060][T22457] 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
[ 4688.751776][T22457] RSP: 002b:00007fff7b779a08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4688.752098][T22457] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f2010e3db77
[ 4688.752439][T22457] RDX: 0000000000000002 RSI: 0000561024579760 RDI: 0000000000000001
[ 4688.752744][T22457] RBP: 0000561024579760 R08: 0000000000000000 R09: 00007f2010eb04e0
[ 4688.753054][T22457] R10: 00007f2010eb03e0 R11: 0000000000000246 R12: 0000000000000002
[ 4688.753355][T22457] R13: 00007f2010ef9760 R14: 0000000000000002 R15: 00007f2010ef49c0
| [ 4695.340882][T22457] ------------[ cut here ]------------
| [4695.342023][T22457] WARNING: CPU: 0 PID: 22457 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) 
| [ 4695.342456][T22457] Modules linked in: netdevsim psample xfrm_user macsec vxlan ip_gre cls_u32 sch_htb dccp_ipv6 dccp_ipv4 dccp sch_etf sch_fq act_mirred cls_matchall ip6_gre gre sch_ingress pktgen 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]
| [ 4695.344121][T22457] Tainted: [W]=WARN
[ 4695.344305][T22457] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[4695.344561][T22457] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4695.344831][T22457] 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
[ 4695.345562][T22457] RSP: 0018:ffffc90000c67528 EFLAGS: 00010246
[ 4695.345828][T22457] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4695.346151][T22457] RDX: 0000000000000000 RSI: ffff88801700acd0 RDI: ffff88801cd72e38
[ 4695.346463][T22457] RBP: ffffffff97053580 R08: 0000000000000000 R09: fffffbfff29c2504
[ 4695.346769][T22457] R10: ffffffff94e12827 R11: ffff88801cd72300 R12: 0000000000000000
[ 4695.347097][T22457] R13: ffff88801700a130 R14: ffff88801700a008 R15: ffff88801700a000
[ 4695.347428][T22457] FS:  00007f2010cfc740(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
[ 4695.347785][T22457] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4695.348059][T22457] CR2: 00007fb26d2de000 CR3: 0000000011726005 CR4: 0000000000772ef0
[ 4695.348369][T22457] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4695.348848][T22457] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4695.349177][T22457] PKRU: 55555554
[ 4695.349347][T22457] Call Trace:
[ 4695.349502][T22457]  <TASK>
[4695.349611][T22457] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[4695.349819][T22457] ? __warn (kernel/panic.c:748) 
[4695.349990][T22457] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[4695.350200][T22457] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[4695.350437][T22457] ? handle_bug (arch/x86/kernel/traps.c:285) 
[4695.350601][T22457] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[4695.350812][T22457] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[4695.351051][T22457] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[4695.351272][T22457] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[4695.351491][T22457] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[4695.351757][T22457] ? _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) 
[4695.351991][T22457] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[4695.352210][T22457] register_netdevice (net/core/dev.c:11003) 
[4695.352432][T22457] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[4695.352634][T22457] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[4695.352854][T22457] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[4695.353082][T22457] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[4695.353344][T22457] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[4695.353509][T22457] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[4695.353776][T22457] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[4695.354050][T22457] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[4695.354315][T22457] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[4695.354533][T22457] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[4695.354792][T22457] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[4695.355017][T22457] ? 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)) 
[4695.355196][T22457] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[4695.355415][T22457] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[4695.355633][T22457] __driver_probe_device (drivers/base/dd.c:800) 
[4695.355852][T22457] driver_probe_device (drivers/base/dd.c:830) 
[4695.356074][T22457] __device_attach_driver (drivers/base/dd.c:959) 
[4695.356300][T22457] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[4695.356557][T22457] bus_for_each_drv (drivers/base/bus.c:462) 
[4695.356765][T22457] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[4695.356995][T22457] ? bus_to_subsys (drivers/base/bus.c:85) 
[4695.357217][T22457] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4695.357428][T22457] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[4695.357642][T22457] __device_attach (drivers/base/dd.c:1030) 
[4695.357852][T22457] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[4695.358075][T22457] ? bus_to_subsys (drivers/base/bus.c:85) 
[4695.358287][T22457] ? 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) 
[4695.358511][T22457] bus_probe_device (drivers/base/bus.c:537) 
[4695.358718][T22457] device_add (drivers/base/core.c:3672) 
[4695.358926][T22457] ? __pfx_device_add (drivers/base/core.c:3548) 
[4695.359141][T22457] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[4695.359381][T22457] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[4695.359661][T22457] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[4695.359937][T22457] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4695.360157][T22457] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[4695.360389][T22457] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4695.360590][T22457] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[4695.360801][T22457] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[4695.360978][T22457] ? __pfx_vfs_write (fs/read_write.c:660) 
[4695.361195][T22457] ? __lock_release (kernel/locking/lockdep.c:5527) 
[4695.361397][T22457] ? 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) 
[4695.361612][T22457] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[4695.361823][T22457] ksys_write (fs/read_write.c:731) 
[4695.361994][T22457] ? __pfx_ksys_write (fs/read_write.c:721) 
[4695.362197][T22457] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[4695.362412][T22457] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4695.362624][T22457] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4695.362877][T22457] RIP: 0033:0x7f2010e3db77
[ 4695.363098][T22457] 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
[ 4695.363834][T22457] RSP: 002b:00007fff7b77a5e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4695.364165][T22457] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f2010e3db77
[ 4695.364482][T22457] RDX: 0000000000000005 RSI: 0000561024579760 RDI: 0000000000000001
[ 4695.364783][T22457] RBP: 0000561024579760 R08: 0000000000000000 R09: 00007f2010eb04e0
[ 4695.365124][T22457] R10: 00007f2010eb03e0 R11: 0000000000000246 R12: 0000000000000005
[ 4695.365437][T22457] R13: 00007f2010ef9760 R14: 0000000000000005 R15: 00007f2010ef49c0
| [ 4695.385644][T22457] ------------[ cut here ]------------
| [4695.386000][T22457] WARNING: CPU: 2 PID: 22457 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) 
| [ 4695.386441][T22457] Modules linked in: netdevsim psample xfrm_user macsec vxlan ip_gre cls_u32 sch_htb dccp_ipv6 dccp_ipv4 dccp sch_etf sch_fq act_mirred cls_matchall ip6_gre gre sch_ingress pktgen 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]
| [ 4695.388266][T22457] Tainted: [W]=WARN
[ 4695.388443][T22457] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[4695.388711][T22457] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4695.389000][T22457] 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
[ 4695.389735][T22457] RSP: 0018:ffffc90000c67528 EFLAGS: 00010246
[ 4695.390026][T22457] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4695.390340][T22457] RDX: 0000000000000000 RSI: ffff88800ae92cd0 RDI: ffff88801cd72e38
[ 4695.390654][T22457] RBP: ffffffff97053580 R08: 0000000000000000 R09: fffffbfff29c2504
[ 4695.390982][T22457] R10: ffffffff94e12827 R11: ffff88801cd72300 R12: 0000000000000000
[ 4695.391298][T22457] R13: ffff88800ae92130 R14: ffff88800ae92008 R15: ffff88800ae92000
[ 4695.391611][T22457] FS:  00007f2010cfc740(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
[ 4695.391986][T22457] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4695.392261][T22457] CR2: 00007f2010e9dc8c CR3: 0000000011726004 CR4: 0000000000772ef0
[ 4695.392573][T22457] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4695.392912][T22457] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4695.393243][T22457] PKRU: 55555554
[ 4695.393415][T22457] Call Trace:
[ 4695.393587][T22457]  <TASK>
[4695.393716][T22457] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[4695.393960][T22457] ? __warn (kernel/panic.c:748) 
[4695.394134][T22457] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[4695.394352][T22457] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[4695.394592][T22457] ? handle_bug (arch/x86/kernel/traps.c:285) 
[4695.394768][T22457] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[4695.395000][T22457] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[4695.395238][T22457] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[4695.395463][T22457] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[4695.395694][T22457] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[4695.396012][T22457] ? _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) 
[4695.396244][T22457] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[4695.396472][T22457] register_netdevice (net/core/dev.c:11003) 
[4695.396704][T22457] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[4695.396930][T22457] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[4695.397198][T22457] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[4695.397435][T22457] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[4695.397719][T22457] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[4695.397897][T22457] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[4695.398198][T22457] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[4695.398492][T22457] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[4695.398771][T22457] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[4695.399014][T22457] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[4695.399288][T22457] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[4695.399509][T22457] ? 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)) 
[4695.399683][T22457] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[4695.399909][T22457] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[4695.400151][T22457] __driver_probe_device (drivers/base/dd.c:800) 
[4695.400372][T22457] driver_probe_device (drivers/base/dd.c:830) 
[4695.400594][T22457] __device_attach_driver (drivers/base/dd.c:959) 
[4695.400817][T22457] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[4695.401090][T22457] bus_for_each_drv (drivers/base/bus.c:462) 
[4695.401327][T22457] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[4695.401549][T22457] ? bus_to_subsys (drivers/base/bus.c:85) 
[4695.401775][T22457] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4695.402007][T22457] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[4695.402237][T22457] __device_attach (drivers/base/dd.c:1030) 
[4695.402461][T22457] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[4695.402681][T22457] ? bus_to_subsys (drivers/base/bus.c:85) 
[4695.402901][T22457] ? 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) 
[4695.403144][T22457] bus_probe_device (drivers/base/bus.c:537) 
[4695.403375][T22457] device_add (drivers/base/core.c:3672) 
[4695.403603][T22457] ? __pfx_device_add (drivers/base/core.c:3548) 
[4695.403824][T22457] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[4695.404074][T22457] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[4695.404358][T22457] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[4695.404643][T22457] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4695.404867][T22457] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[4695.405110][T22457] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[4695.405329][T22457] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[4695.405556][T22457] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[4695.405738][T22457] ? __pfx_vfs_write (fs/read_write.c:660) 
[4695.405982][T22457] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[4695.406214][T22457] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[4695.406447][T22457] ksys_write (fs/read_write.c:731) 
[4695.406622][T22457] ? __pfx_ksys_write (fs/read_write.c:721) 
[4695.406855][T22457] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[4695.407098][T22457] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4695.407381][T22457] RIP: 0033:0x7f2010e3db77
[ 4695.407608][T22457] 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
[ 4695.408345][T22457] RSP: 002b:00007fff7b77a848 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4695.408669][T22457] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f2010e3db77
[ 4695.408998][T22457] RDX: 0000000000000005 RSI: 0000561024579760 RDI: 0000000000000001
[ 4695.409322][T22457] RBP: 0000561024579760 R08: 0000000000000000 R09: 00007f2010eb04e0
[ 4695.409644][T22457] R10: 00007f2010eb03e0 R11: 0000000000000246 R12: 0000000000000005


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