======================================
| 0
| xx__-> [   14.617876][  T246] netdevsim netdevsim1337 eni1337np1: renamed from eth0
| [   14.725871][  T248] BUG: using smp_processor_id() in preemptible [00000000] code: devlink/248
| [ 14.727092][ T248] caller is nsim_queue_uninit (./include/linux/netdevice.h:3023 (discriminator 3) drivers/net/netdevsim/netdev.c:638 (discriminator 3) drivers/net/netdevsim/netdev.c:917 (discriminator 3)) netdevsim 
[   14.727603][  T248] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.727605][  T248] Call Trace:
[   14.727607][  T248]  <TASK>
[ 14.727610][ T248] dump_stack_lvl (lib/dump_stack.c:123) 
[ 14.727628][ T248] check_preemption_disabled (lib/smp_processor_id.c:52) 
[ 14.727639][ T248] nsim_queue_uninit (./include/linux/netdevice.h:3023 (discriminator 3) drivers/net/netdevsim/netdev.c:638 (discriminator 3) drivers/net/netdevsim/netdev.c:917 (discriminator 3)) netdevsim 
[ 14.727658][ T248] ? nsim_destroy (drivers/net/netdevsim/netdev.c:1062) netdevsim 
[ 14.727675][ T248] nsim_destroy (drivers/net/netdevsim/netdev.c:1062) netdevsim 
[ 14.727694][ T248] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:426 drivers/net/netdevsim/dev.c:1429) netdevsim 
[ 14.727711][ T248] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1438 drivers/net/netdevsim/dev.c:1661) netdevsim 
[ 14.727730][ T248] nsim_dev_reload_down (drivers/net/netdevsim/dev.c:969) netdevsim 
[ 14.727745][ T248] devlink_reload (net/devlink/dev.c:462) 
[ 14.727758][ T248] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 14.727766][ T248] ? cap_capable (security/commoncap.c:132) 
[ 14.727774][ T248] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1152 fs/file.c:1166) 
[ 14.727787][ T248] devlink_nl_reload_doit (net/devlink/dev.c:584) 
[ 14.727795][ T248] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 14.727802][ T248] ? __nla_parse (lib/nlattr.c:732) 
[ 14.727816][ T248] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1117) 
[ 14.727824][ T248] ? __pfx_genl_family_rcv_msg_doit (net/netlink/genetlink.c:1088) 
[ 14.727841][ T248] ? cap_capable (security/commoncap.c:132) 
[ 14.727844][ T248] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 14.727857][ T248] genl_family_rcv_msg (net/netlink/genetlink.c:1195) 
[ 14.727866][ T248] ? __pfx_genl_family_rcv_msg (net/netlink/genetlink.c:1160) 
[ 14.727870][ T248] ? __pfx_devlink_nl_pre_doit_dev_lock (net/devlink/netlink.c:257) 
[ 14.727874][ T248] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 14.727877][ T248] ? __pfx_devlink_nl_post_doit_dev_lock (net/devlink/netlink.c:288) 
[ 14.727892][ T248] genl_rcv_msg (net/netlink/genetlink.c:65 net/netlink/genetlink.c:1211) 
[ 14.727898][ T248] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 14.727902][ T248] ? __pfx_genl_rcv_msg (net/netlink/genetlink.c:1201) 
[ 14.727909][ T248] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 14.727927][ T248] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 14.727936][ T248] genl_rcv (net/netlink/genetlink.c:1220) 
[ 14.727940][ T248] netlink_unicast (net/netlink/af_netlink.c:1314 net/netlink/af_netlink.c:1339) 
[ 14.727948][ T248] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 14.727953][ T248] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 14.727966][ T248] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 14.727975][ T248] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 14.727984][ T248] ? __might_fault (mm/memory.c:6991 mm/memory.c:6985) 
[ 14.727995][ T248] __sys_sendto (net/socket.c:712 net/socket.c:727 net/socket.c:2180) 
[ 14.728006][ T248] ? __pfx___sys_sendto (net/socket.c:2147) 
[ 14.728021][ T248] ? rseq_update_cpu_node_id (kernel/rseq.c:189 (discriminator 10)) 
[ 14.728029][ T248] ? __rseq_handle_notify_resume (kernel/rseq.c:442) 
[ 14.728031][ T248] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 14.728037][ T248] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:425) 
[ 14.728044][ T248] ? exc_page_fault (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:151 arch/x86/mm/fault.c:1484 arch/x86/mm/fault.c:1532) 
[ 14.728049][ T248] ? __pfx___x64_sys_openat (fs/open.c:1463) 
[ 14.728058][ T248] __x64_sys_sendto (net/socket.c:2183) 
[ 14.728062][ T248] ? do_syscall_64 (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 ./include/linux/entry-common.h:199 arch/x86/entry/syscall_64.c:90) 
[ 14.728067][ T248] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 14.728072][ T248] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 14.728080][ T248] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   14.728087][  T248] RIP: 0033:0x7fb7bc808a4a
[ 14.728092][ T248] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89
All code
========
   0:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   4:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   b:	eb b8                	jmp    0xffffffffffffffc5
   d:	0f 1f 00             	nopl   (%rax)
  10:	f3 0f 1e fa          	endbr64
  14:	41 89 ca             	mov    %ecx,%r10d
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 15                	jne    0x38
  23:	b8 2c 00 00 00       	mov    $0x2c,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 7e                	ja     0xb0
  32:	c3                   	ret
  33:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  38:	41 54                	push   %r12
  3a:	48 83 ec 30          	sub    $0x30,%rsp
  3e:	44                   	rex.R
  3f:	89                   	.byte 0x89

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 7e                	ja     0x86
   8:	c3                   	ret
   9:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
   e:	41 54                	push   %r12
  10:	48 83 ec 30          	sub    $0x30,%rsp
  14:	44                   	rex.R
  15:	89                   	.byte 0x89
[   14.728095][  T248] RSP: 002b:00007ffc0a789248 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   14.728101][  T248] RAX: ffffffffffffffda RBX: 000000001d182b00 RCX: 00007fb7bc808a4a
[   14.728103][  T248] RDX: 0000000000000040 RSI: 000000001d182b00 RDI: 0000000000000005
[   14.728105][  T248] RBP: 000000001d182910 R08: 00007fb7bc9af200 R09: 000000000000000c
[   14.728107][  T248] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000040f200
[   14.728109][  T248] R13: 000000001d182910 R14: 0000000000000000 R15: 0000000000000001
| [   14.728109][  T248] R13: 000000001d182910 R14: 0000000000000000 R15: 0000000000000001
| [   14.728125][  T248]  </TASK>
| [   92.599446][   T66] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u16:1/66
| [ 92.600131][ T66] caller is nsim_queue_uninit (./include/linux/netdevice.h:3023 (discriminator 3) drivers/net/netdevsim/netdev.c:638 (discriminator 3) drivers/net/netdevsim/netdev.c:917 (discriminator 3)) netdevsim 
[   92.600825][   T66] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   92.600827][   T66] Workqueue: netns cleanup_net
[   92.600850][   T66] Call Trace:
[   92.600852][   T66]  <TASK>
[ 92.600855][ T66] dump_stack_lvl (lib/dump_stack.c:123) 
[ 92.600867][ T66] check_preemption_disabled (lib/smp_processor_id.c:52) 
[ 92.600878][ T66] nsim_queue_uninit (./include/linux/netdevice.h:3023 (discriminator 3) drivers/net/netdevsim/netdev.c:638 (discriminator 3) drivers/net/netdevsim/netdev.c:917 (discriminator 3)) netdevsim 
[ 92.600898][ T66] ? nsim_destroy (drivers/net/netdevsim/netdev.c:1062) netdevsim 
[ 92.600917][ T66] nsim_destroy (drivers/net/netdevsim/netdev.c:1062) netdevsim 
[ 92.600936][ T66] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:426 drivers/net/netdevsim/dev.c:1429) netdevsim 
[ 92.600953][ T66] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1438 drivers/net/netdevsim/dev.c:1661) netdevsim 
[ 92.600972][ T66] nsim_dev_reload_down (drivers/net/netdevsim/dev.c:969) netdevsim 
[ 92.600988][ T66] devlink_reload (net/devlink/dev.c:462) 
[ 92.601002][ T66] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 92.601019][ T66] devlink_pernet_pre_exit (net/devlink/core.c:288 net/devlink/devl_internal.h:114 net/devlink/core.c:513) 
[ 92.601025][ T66] ? __pfx_devlink_pernet_pre_exit (net/devlink/core.c:496) 
[ 92.601028][ T66] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 92.601036][ T66] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 92.601054][ T66] ops_undo_list (net/core/net_namespace.c:162 net/core/net_namespace.c:235) 
[ 92.601064][ T66] ? __pfx_ops_undo_list (net/core/net_namespace.c:224) 
[ 92.601072][ T66] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 92.601086][ T66] cleanup_net (net/core/net_namespace.c:688) 
[ 92.601092][ T66] ? __pfx_cleanup_net (net/core/net_namespace.c:652) 
[ 92.601100][ T66] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 92.601109][ T66] process_one_work (kernel/workqueue.c:3243) 
[ 92.601126][ T66] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 92.601139][ T66] ? assign_work (kernel/workqueue.c:1200) 
[ 92.601148][ T66] worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 92.601161][ T66] ? __pfx_worker_thread (kernel/workqueue.c:3348) 
[ 92.601168][ T66] kthread (kernel/kthread.c:464) 
[ 92.601174][ T66] ? __pfx_kthread (kernel/kthread.c:413) 
[ 92.601176][ T66] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 92.601184][ T66] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 92.601190][ T66] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 92.601194][ T66] ? __pfx_kthread (kernel/kthread.c:413) 
[ 92.601200][ T66] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 92.601204][ T66] ? __pfx_kthread (kernel/kthread.c:413) 
[ 92.601207][ T66] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [ 92.601207][ T66] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [   92.601228][   T66]  </TASK>
| [   92.718450][  T229] BUG: using smp_processor_id() in preemptible [00000000] code: fib_notificatio/229
| [ 92.719225][ T229] caller is nsim_queue_uninit (./include/linux/netdevice.h:3023 (discriminator 3) drivers/net/netdevsim/netdev.c:638 (discriminator 3) drivers/net/netdevsim/netdev.c:917 (discriminator 3)) netdevsim 
[   92.720958][  T229] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   92.720960][  T229] Call Trace:
[   92.720962][  T229]  <TASK>
[ 92.720965][ T229] dump_stack_lvl (lib/dump_stack.c:123) 
[ 92.720975][ T229] check_preemption_disabled (lib/smp_processor_id.c:52) 
[ 92.720984][ T229] nsim_queue_uninit (./include/linux/netdevice.h:3023 (discriminator 3) drivers/net/netdevsim/netdev.c:638 (discriminator 3) drivers/net/netdevsim/netdev.c:917 (discriminator 3)) netdevsim 
[ 92.721004][ T229] ? nsim_destroy (drivers/net/netdevsim/netdev.c:1062) netdevsim 
[ 92.721022][ T229] nsim_destroy (drivers/net/netdevsim/netdev.c:1062) netdevsim 
[ 92.721042][ T229] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:426 drivers/net/netdevsim/dev.c:1429) netdevsim 
[ 92.721059][ T229] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1438 drivers/net/netdevsim/dev.c:1661) netdevsim 
[ 92.721078][ T229] nsim_drv_remove (drivers/net/netdevsim/dev.c:1678) netdevsim 
[ 92.721098][ T229] device_release_driver_internal (drivers/base/dd.c:1274 drivers/base/dd.c:1295) 
[ 92.721108][ T229] ? klist_put (lib/klist.c:220) 
[ 92.721116][ T229] bus_remove_device (./include/linux/kobject.h:193 drivers/base/base.h:73 drivers/base/bus.c:586) 
[ 92.721126][ T229] device_del (drivers/base/core.c:3882) 
[ 92.721133][ T229] ? __pfx_device_del (drivers/base/core.c:3836) 
[ 92.721147][ T229] device_unregister (drivers/base/core.c:3799 drivers/base/core.c:3923) 
[ 92.721150][ T229] del_device_store (drivers/net/netdevsim/bus.c:230) netdevsim 
[ 92.721169][ T229] ? __pfx_del_device_store (drivers/net/netdevsim/bus.c:197) netdevsim 
[ 92.721191][ T229] ? sysfs_file_kobj (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/linux/rcupdate.h:1155 fs/sysfs/file.c:24) 
[ 92.721203][ T229] ? sysfs_file_kobj (fs/sysfs/file.c:26) 
[ 92.721211][ T229] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:138) 
[ 92.721214][ T229] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 92.721225][ T229] vfs_write (fs/read_write.c:593 fs/read_write.c:686) 
[ 92.721237][ T229] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 92.721246][ T229] ? __pfx_lock_vma_under_rcu (mm/mmap_lock.c:137) 
[ 92.721257][ T229] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 92.721270][ T229] ksys_write (fs/read_write.c:738) 
[ 92.721276][ T229] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 92.721278][ T229] ? do_user_addr_fault (./arch/x86/include/asm/atomic.h:93 ./include/linux/atomic/atomic-arch-fallback.h:949 ./include/linux/atomic/atomic-instrumented.h:401 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:142 ./include/linux/mmap_lock.h:237 arch/x86/mm/fault.c:1338) 
[ 92.721293][ T229] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 92.721301][ T229] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   92.721305][  T229] RIP: 0033:0x7f7bf7ae2b77
[ 92.721312][ T229] 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
[   92.721315][  T229] RSP: 002b:00007ffe554a3598 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   92.721322][  T229] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f7bf7ae2b77
[   92.721325][  T229] RDX: 0000000000000005 RSI: 000056408687f440 RDI: 0000000000000001
[   92.721326][  T229] RBP: 000056408687f440 R08: 0000000000000000 R09: 00007f7bf7b554e0
[   92.721328][  T229] R10: 00007f7bf7b553e0 R11: 0000000000000246 R12: 0000000000000005


Finger prints:
check_preemption_disabled:nsim_queue_uninit:nsim_destroy:__nsim_dev_port_del:nsim_dev_reload_destroy
ret_from_fork_asm:dump_stack_lvl:check_preemption_disabled:nsim_queue_uninit:nsim_destroy