======================================
| 0
| xx__-> [ 4422.731152][ T8539] ------------[ cut here ]------------
| [ 4422.731536][ T8539] WARNING: CPU: 0 PID: 8539 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) 
| [ 4422.732115][ T8539] Modules linked in: netdevsim psample act_tunnel_key bareudp xt_length act_ct nf_flow_table nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 sctp_diag sctp act_gact cls_flower xt_mark sch_ingress act_mirred cls_basic sch_fq_codel xt_HL amt ip6t_rpfilter nft_compat nf_tables vxlan mpls_gso mpls_iptunnel mpls_router
[ 4422.733639][ T8539] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4422.733913][ T8539] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4422.734182][ T8539] 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
[ 4422.734915][ T8539] RSP: 0018:ffffc90000e07528 EFLAGS: 00010246
[ 4422.735186][ T8539] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4422.735495][ T8539] RDX: 0000000000000000 RSI: ffff888017312cd0 RDI: ffff88800c908b78
[ 4422.735819][ T8539] RBP: ffffffffaf853580 R08: 0000000000000000 R09: fffffbfff5ac2504
[ 4422.736134][ T8539] R10: ffffffffad612827 R11: ffff88800c908040 R12: 0000000000000000
[ 4422.736442][ T8539] R13: ffff888017312130 R14: ffff888017312008 R15: ffff888017312000
[ 4422.736762][ T8539] FS:  00007fda7e4c41c0(0000) GS:ffff888065a00000(0000) knlGS:0000000000000000
[ 4422.737121][ T8539] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4422.737383][ T8539] CR2: 00007fda70e917c0 CR3: 000000000ef96006 CR4: 0000000000772ef0
[ 4422.737716][ T8539] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4422.738027][ T8539] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4422.738336][ T8539] PKRU: 55555554
[ 4422.738498][ T8539] Call Trace:
[ 4422.738671][ T8539]  <TASK>
[ 4422.738783][ T8539] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4422.738999][ T8539] ? __warn (kernel/panic.c:748) 
[ 4422.739160][ T8539] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4422.739367][ T8539] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 4422.739589][ T8539] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 4422.739749][ T8539] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 4422.739957][ T8539] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 4422.740177][ T8539] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4422.740386][ T8539] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 4422.740611][ T8539] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 4422.740873][ T8539] ? _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) 
[ 4422.741090][ T8539] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 4422.741302][ T8539] register_netdevice (net/core/dev.c:11003) 
[ 4422.741527][ T8539] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 4422.741733][ T8539] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 4422.741958][ T8539] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 4422.742179][ T8539] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 4422.742442][ T8539] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 4422.742614][ T8539] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 4422.742886][ T8539] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 4422.743150][ T8539] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 4422.743420][ T8539] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 4422.743653][ T8539] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 4422.743915][ T8539] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 4422.744124][ T8539] ? 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)) 
[ 4422.744281][ T8539] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 4422.744495][ T8539] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 4422.744717][ T8539] __driver_probe_device (drivers/base/dd.c:800) 
[ 4422.744935][ T8539] driver_probe_device (drivers/base/dd.c:830) 
[ 4422.745142][ T8539] __device_attach_driver (drivers/base/dd.c:959) 
[ 4422.745351][ T8539] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 4422.745613][ T8539] bus_for_each_drv (drivers/base/bus.c:462) 
[ 4422.745823][ T8539] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 4422.746031][ T8539] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 4422.746236][ T8539] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 4422.746449][ T8539] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 4422.746671][ T8539] __device_attach (drivers/base/dd.c:1030) 
[ 4422.746877][ T8539] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 4422.747081][ T8539] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 4422.747288][ T8539] ? 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) 
[ 4422.747509][ T8539] bus_probe_device (drivers/base/bus.c:537) 
[ 4422.747720][ T8539] device_add (drivers/base/core.c:3672) 
[ 4422.747934][ T8539] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 4422.748140][ T8539] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 4422.748358][ T8539] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 4422.748633][ T8539] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 4422.748906][ T8539] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 4422.749110][ T8539] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 4422.749323][ T8539] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 4422.749542][ T8539] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 4422.749756][ T8539] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 4422.749921][ T8539] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 4422.750133][ T8539] ? __lock_release (kernel/locking/lockdep.c:5527) 
[ 4422.750341][ T8539] ? 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) 
[ 4422.750571][ T8539] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 4422.750785][ T8539] ksys_write (fs/read_write.c:731) 
[ 4422.750948][ T8539] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 4422.751154][ T8539] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1339) 
[ 4422.751371][ T8539] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 4422.751589][ T8539] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4422.751847][ T8539] RIP: 0033:0x7fda7e6deb77
[ 4422.752064][ T8539] 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
[ 4422.752788][ T8539] RSP: 002b:00007ffd7b769178 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4422.753102][ T8539] RAX: ffffffffffffffda RBX: 00007fda7e4c4140 RCX: 00007fda7e6deb77
[ 4422.753409][ T8539] RDX: 0000000000000008 RSI: 0000558935a40290 RDI: 0000000000000006
[ 4422.753731][ T8539] RBP: 0000000000000008 R08: 0000000000000000 R09: 0000000000000000
[ 4422.754044][ T8539] R10: 0000000000000002 R11: 0000000000000246 R12: 00007fda7057b340
[ 4422.754354][ T8539] R13: 0000558935a40290 R14: 0000000000000006 R15: 0000558935817900
| [ 4425.867140][ T8539] ------------[ cut here ]------------
| [ 4425.867711][ T8539] WARNING: CPU: 1 PID: 8539 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) 
| [ 4425.868141][ T8539] Modules linked in: netdevsim psample act_tunnel_key bareudp xt_length act_ct nf_flow_table nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 sctp_diag sctp act_gact cls_flower xt_mark sch_ingress act_mirred cls_basic sch_fq_codel xt_HL amt ip6t_rpfilter nft_compat nf_tables vxlan mpls_gso mpls_iptunnel mpls_router
| [ 4425.869873][ T8539] Tainted: [W]=WARN
[ 4425.870073][ T8539] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4425.870336][ T8539] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4425.870613][ T8539] 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
[ 4425.871326][ T8539] RSP: 0018:ffffc90000e07528 EFLAGS: 00010246
[ 4425.871788][ T8539] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4425.872103][ T8539] RDX: 0000000000000000 RSI: ffff888017362cd0 RDI: ffff88800c908b78
[ 4425.872412][ T8539] RBP: ffffffffaf853580 R08: 0000000000000000 R09: fffffbfff5ac2504
[ 4425.872740][ T8539] R10: ffffffffad612827 R11: ffff88800c908040 R12: 0000000000000000
[ 4425.873053][ T8539] R13: ffff888017362130 R14: ffff888017362008 R15: ffff888017362000
[ 4425.873365][ T8539] FS:  00007fda7e4c41c0(0000) GS:ffff888065a80000(0000) knlGS:0000000000000000
[ 4425.873747][ T8539] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4425.874008][ T8539] CR2: 00007fda70f02d60 CR3: 000000000ef96002 CR4: 0000000000772ef0
[ 4425.874320][ T8539] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4425.874630][ T8539] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4425.874934][ T8539] PKRU: 55555554
[ 4425.875091][ T8539] Call Trace:
[ 4425.875248][ T8539]  <TASK>
[ 4425.875355][ T8539] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4425.875577][ T8539] ? __warn (kernel/panic.c:748) 
[ 4425.875741][ T8539] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4425.875953][ T8539] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 4425.876165][ T8539] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 4425.876326][ T8539] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 4425.876548][ T8539] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 4425.876773][ T8539] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4425.876981][ T8539] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 4425.877194][ T8539] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 4425.877455][ T8539] ? _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) 
[ 4425.877677][ T8539] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 4425.877894][ T8539] register_netdevice (net/core/dev.c:11003) 
[ 4425.878110][ T8539] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 4425.878317][ T8539] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 4425.878546][ T8539] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 4425.878771][ T8539] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 4425.879037][ T8539] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 4425.879198][ T8539] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 4425.879471][ T8539] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 4425.879744][ T8539] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 4425.880010][ T8539] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 4425.880233][ T8539] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 4425.880497][ T8539] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 4425.880721][ T8539] ? 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)) 
[ 4425.880881][ T8539] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 4425.881096][ T8539] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 4425.881310][ T8539] __driver_probe_device (drivers/base/dd.c:800) 
[ 4425.881563][ T8539] driver_probe_device (drivers/base/dd.c:830) 
[ 4425.881773][ T8539] __device_attach_driver (drivers/base/dd.c:959) 
[ 4425.881984][ T8539] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 4425.882239][ T8539] bus_for_each_drv (drivers/base/bus.c:462) 
[ 4425.882447][ T8539] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 4425.882661][ T8539] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 4425.882868][ T8539] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 4425.883077][ T8539] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 4425.883293][ T8539] __device_attach (drivers/base/dd.c:1030) 
[ 4425.883509][ T8539] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 4425.883725][ T8539] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 4425.883931][ T8539] ? 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) 
[ 4425.884143][ T8539] bus_probe_device (drivers/base/bus.c:537) 
[ 4425.884352][ T8539] device_add (drivers/base/core.c:3672) 
[ 4425.884578][ T8539] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 4425.884783][ T8539] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 4425.885006][ T8539] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 4425.885271][ T8539] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 4425.885550][ T8539] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 4425.885754][ T8539] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 4425.885965][ T8539] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 4425.886173][ T8539] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 4425.886385][ T8539] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 4425.886558][ T8539] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 4425.886762][ T8539] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 4425.886983][ T8539] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:885) 
[ 4425.887248][ T8539] ksys_write (fs/read_write.c:731) 
[ 4425.887408][ T8539] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 4425.887622][ T8539] ? kernfs_fop_llseek (fs/kernfs/file.c:891) 
[ 4425.887844][ T8539] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 4425.888054][ T8539] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4425.888307][ T8539] RIP: 0033:0x7fda7e6deb77
[ 4425.888530][ T8539] 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
[ 4425.889241][ T8539] RSP: 002b:00007ffd7b769218 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4425.889558][ T8539] RAX: ffffffffffffffda RBX: 00007fda7e4c4140 RCX: 00007fda7e6deb77
[ 4425.889863][ T8539] RDX: 000000000000000b RSI: 0000558935a441a0 RDI: 0000000000000006
[ 4425.890166][ T8539] RBP: 000000000000000b R08: 0000000000000000 R09: 0000000000000000
[ 4425.890473][ T8539] R10: 0000000000000002 R11: 0000000000000246 R12: 00007fda70406280
[ 4425.890786][ T8539] R13: 0000558935a441a0 R14: 0000000000000006 R15: 0000558935817900
| [ 4428.239410][ T8539] ------------[ cut here ]------------
| [ 4428.239876][ T8539] WARNING: CPU: 0 PID: 8539 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) 
| [ 4428.240297][ T8539] Modules linked in: netdevsim psample act_tunnel_key bareudp xt_length act_ct nf_flow_table nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 sctp_diag sctp act_gact cls_flower xt_mark sch_ingress act_mirred cls_basic sch_fq_codel xt_HL amt ip6t_rpfilter nft_compat nf_tables vxlan mpls_gso mpls_iptunnel mpls_router
| [ 4428.242016][ T8539] Tainted: [W]=WARN
[ 4428.242177][ T8539] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 4428.242438][ T8539] RIP: 0010:__netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4428.242713][ T8539] 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
[ 4428.243424][ T8539] RSP: 0018:ffffc90000e07528 EFLAGS: 00010246
[ 4428.243707][ T8539] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[ 4428.244016][ T8539] RDX: 0000000000000000 RSI: ffff88800aebacd0 RDI: ffff88800c908b78
[ 4428.244323][ T8539] RBP: ffffffffaf853580 R08: 0000000000000000 R09: fffffbfff5ac2504
[ 4428.244640][ T8539] R10: ffffffffad612827 R11: ffff88800c908040 R12: 0000000000000000
[ 4428.244947][ T8539] R13: ffff88800aeba130 R14: ffff88800aeba008 R15: ffff88800aeba000
[ 4428.245254][ T8539] FS:  00007fda7e4c41c0(0000) GS:ffff888065a00000(0000) knlGS:0000000000000000
[ 4428.245620][ T8539] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4428.245883][ T8539] CR2: 00007f540eb7b7d0 CR3: 000000000ef96006 CR4: 0000000000772ef0
[ 4428.246193][ T8539] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 4428.246511][ T8539] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 4428.246821][ T8539] PKRU: 55555554
[ 4428.246978][ T8539] Call Trace:
[ 4428.247133][ T8539]  <TASK>
[ 4428.247240][ T8539] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4428.247447][ T8539] ? __warn (kernel/panic.c:748) 
[ 4428.247615][ T8539] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4428.247827][ T8539] ? report_bug (lib/bug.c:201 lib/bug.c:219) 
[ 4428.248041][ T8539] ? handle_bug (arch/x86/kernel/traps.c:285) 
[ 4428.248199][ T8539] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1)) 
[ 4428.248405][ T8539] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621) 
[ 4428.248636][ T8539] ? __netdev_update_features (./include/net/netdev_lock.h:52 ./include/net/netdev_lock.h:49 net/core/dev.c:10566) 
[ 4428.248845][ T8539] ? __netdev_update_features (./include/net/netdev_lock.h:52 net/core/dev.c:10566) 
[ 4428.249057][ T8539] ? __pfx___netdev_update_features (net/core/dev.c:10559) 
[ 4428.249317][ T8539] ? _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) 
[ 4428.249538][ T8539] ? netdev_register_kobject (net/core/net-sysfs.c:2344) 
[ 4428.249752][ T8539] register_netdevice (net/core/dev.c:11003) 
[ 4428.249968][ T8539] ? __pfx_register_netdevice (net/core/dev.c:10881) 
[ 4428.250177][ T8539] ? __debugfs_create_file (fs/debugfs/inode.c:466) 
[ 4428.250404][ T8539] nsim_create (drivers/net/netdevsim/netdev.c:958 drivers/net/netdevsim/netdev.c:1018) netdevsim 
[ 4428.250639][ T8539] __nsim_dev_port_add (drivers/net/netdevsim/dev.c:1393) netdevsim 
[ 4428.250907][ T8539] ? mark_lock (kernel/locking/lockdep.c:4729 (discriminator 3)) 
[ 4428.251069][ T8539] ? __pfx___nsim_dev_port_add (drivers/net/netdevsim/dev.c:1357) netdevsim 
[ 4428.251339][ T8539] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4349 kernel/locking/lockdep.c:4408) 
[ 4428.251612][ T8539] nsim_dev_port_add_all (drivers/net/netdevsim/dev.c:1449) netdevsim 
[ 4428.251879][ T8539] nsim_drv_probe (drivers/net/netdevsim/dev.c:1607) netdevsim 
[ 4428.252098][ T8539] ? __pfx_nsim_drv_probe (drivers/net/netdevsim/dev.c:1528) netdevsim 
[ 4428.252361][ T8539] ? kernfs_create_link (fs/kernfs/symlink.c:48) 
[ 4428.252581][ T8539] ? 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)) 
[ 4428.252742][ T8539] ? sysfs_do_create_link_sd (fs/sysfs/symlink.c:48) 
[ 4428.252958][ T8539] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658) 
[ 4428.253175][ T8539] __driver_probe_device (drivers/base/dd.c:800) 
[ 4428.253389][ T8539] driver_probe_device (drivers/base/dd.c:830) 
[ 4428.253614][ T8539] __device_attach_driver (drivers/base/dd.c:959) 
[ 4428.253827][ T8539] ? __pfx___device_attach_driver (drivers/base/dd.c:922) 
[ 4428.254082][ T8539] bus_for_each_drv (drivers/base/bus.c:462) 
[ 4428.254294][ T8539] ? __pfx_bus_for_each_drv (drivers/base/bus.c:450) 
[ 4428.254509][ T8539] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 4428.254717][ T8539] ? __pfx___lock_release (kernel/locking/lockdep.c:5503) 
[ 4428.254927][ T8539] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5816) 
[ 4428.255141][ T8539] __device_attach (drivers/base/dd.c:1030) 
[ 4428.255351][ T8539] ? __pfx___device_attach (drivers/base/dd.c:1001) 
[ 4428.255565][ T8539] ? bus_to_subsys (drivers/base/bus.c:85) 
[ 4428.255772][ T8539] ? 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) 
[ 4428.255986][ T8539] bus_probe_device (drivers/base/bus.c:537) 
[ 4428.256200][ T8539] device_add (drivers/base/core.c:3672) 
[ 4428.256411][ T8539] ? __pfx_device_add (drivers/base/core.c:3548) 
[ 4428.256690][ T8539] ? __init_waitqueue_head (./include/linux/list.h:37 kernel/sched/wait.c:12) 
[ 4428.256911][ T8539] new_device_store (drivers/net/netdevsim/bus.c:443 drivers/net/netdevsim/bus.c:173) netdevsim 
[ 4428.257179][ T8539] ? __pfx_new_device_store (drivers/net/netdevsim/bus.c:142) netdevsim 
[ 4428.257449][ T8539] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 4428.257668][ T8539] ? sysfs_file_ops (fs/sysfs/file.c:31 (discriminator 1)) 
[ 4428.257882][ T8539] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:132) 
[ 4428.258087][ T8539] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 4428.258310][ T8539] vfs_write (fs/read_write.c:586 fs/read_write.c:679) 
[ 4428.258475][ T8539] ? __pfx_vfs_write (fs/read_write.c:660) 
[ 4428.258689][ T8539] ? find_held_lock (kernel/locking/lockdep.c:5341) 
[ 4428.258912][ T8539] ? __pfx___mutex_unlock_slowpath (kernel/locking/mutex.c:885) 
[ 4428.259179][ T8539] ksys_write (fs/read_write.c:731) 
[ 4428.259338][ T8539] ? __pfx_ksys_write (fs/read_write.c:721) 
[ 4428.259556][ T8539] ? kernfs_fop_llseek (fs/kernfs/file.c:891) 
[ 4428.259780][ T8539] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 4428.259990][ T8539] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 4428.260247][ T8539] RIP: 0033:0x7fda7e6deb77
[ 4428.260461][ T8539] 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
[ 4428.261181][ T8539] RSP: 002b:00007ffd7b769218 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 4428.261487][ T8539] RAX: ffffffffffffffda RBX: 00007fda7e4c4140 RCX: 00007fda7e6deb77
[ 4428.261800][ T8539] RDX: 0000000000000009 RSI: 0000558935a441a0 RDI: 0000000000000006
[ 4428.262105][ T8539] RBP: 0000000000000009 R08: 0000000000000000 R09: 0000000000000000
[ 4428.262407][ T8539] R10: 0000000000000002 R11: 0000000000000246 R12: 00007fda70406280


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