======================================
| 0
| xx__-> [   13.102986][  T251] netdevsim netdevsim1337 eni1337np1: renamed from eth0
| [   13.186089][  T256] BUG: using smp_processor_id() in preemptible [00000000] code: devlink/256
| [ 13.186793][ T256] 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 
[   13.187227][  T256] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.187229][  T256] Call Trace:
[   13.187231][  T256]  <TASK>
[ 13.187234][ T256] dump_stack_lvl (lib/dump_stack.c:123) 
[ 13.187244][ T256] check_preemption_disabled (lib/smp_processor_id.c:52) 
[ 13.187253][ T256] 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 
[ 13.187271][ T256] ? nsim_destroy (drivers/net/netdevsim/netdev.c:1062) netdevsim 
[ 13.187289][ T256] nsim_destroy (drivers/net/netdevsim/netdev.c:1062) netdevsim 
[ 13.187308][ T256] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:426 drivers/net/netdevsim/dev.c:1429) netdevsim 
[ 13.187325][ T256] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1438 drivers/net/netdevsim/dev.c:1661) netdevsim 
[ 13.187344][ T256] nsim_dev_reload_down (drivers/net/netdevsim/dev.c:969) netdevsim 
[ 13.187360][ T256] devlink_reload (net/devlink/dev.c:462) 
[ 13.187371][ T256] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 13.187379][ T256] ? cap_capable (security/commoncap.c:132) 
[ 13.187384][ T256] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1152 fs/file.c:1166) 
[ 13.187395][ T256] devlink_nl_reload_doit (net/devlink/dev.c:584) 
[ 13.187403][ T256] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 13.187411][ T256] ? __nla_parse (lib/nlattr.c:732) 
[ 13.187423][ T256] genl_family_rcv_msg_doit (net/netlink/genetlink.c:1117) 
[ 13.187431][ T256] ? __pfx_genl_family_rcv_msg_doit (net/netlink/genetlink.c:1088) 
[ 13.187447][ T256] ? cap_capable (security/commoncap.c:132) 
[ 13.187450][ T256] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 13.187463][ T256] genl_family_rcv_msg (net/netlink/genetlink.c:1195) 
[ 13.187469][ T256] ? __pfx_genl_family_rcv_msg (net/netlink/genetlink.c:1160) 
[ 13.187474][ T256] ? __pfx_devlink_nl_pre_doit_dev_lock (net/devlink/netlink.c:257) 
[ 13.187477][ T256] ? __pfx_devlink_nl_reload_doit (net/devlink/dev.c:520) 
[ 13.187481][ T256] ? __pfx_devlink_nl_post_doit_dev_lock (net/devlink/netlink.c:288) 
[ 13.187496][ T256] genl_rcv_msg (net/netlink/genetlink.c:65 net/netlink/genetlink.c:1211) 
[ 13.187502][ T256] netlink_rcv_skb (net/netlink/af_netlink.c:2534) 
[ 13.187506][ T256] ? __pfx_genl_rcv_msg (net/netlink/genetlink.c:1201) 
[ 13.187513][ T256] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2511) 
[ 13.187531][ T256] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 13.187540][ T256] genl_rcv (net/netlink/genetlink.c:1220) 
[ 13.187543][ T256] netlink_unicast (net/netlink/af_netlink.c:1314 net/netlink/af_netlink.c:1339) 
[ 13.187551][ T256] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1324) 
[ 13.187556][ T256] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 13.187568][ T256] netlink_sendmsg (net/netlink/af_netlink.c:1883) 
[ 13.187577][ T256] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1802) 
[ 13.187586][ T256] ? __might_fault (mm/memory.c:6991 mm/memory.c:6985) 
[ 13.187596][ T256] __sys_sendto (net/socket.c:712 net/socket.c:727 net/socket.c:2180) 
[ 13.187603][ T256] ? __pfx___sys_sendto (net/socket.c:2147) 
[ 13.187618][ T256] ? rseq_update_cpu_node_id (kernel/rseq.c:189 (discriminator 10)) 
[ 13.187626][ T256] ? __rseq_handle_notify_resume (kernel/rseq.c:442) 
[ 13.187628][ T256] ? rseq_update_cpu_node_id (kernel/rseq.c:189 (discriminator 10)) 
[ 13.187634][ T256] ? __pfx___rseq_handle_notify_resume (kernel/rseq.c:425) 
[ 13.187643][ T256] ? __pfx___x64_sys_openat (fs/open.c:1463) 
[ 13.187652][ T256] __x64_sys_sendto (net/socket.c:2183) 
[ 13.187656][ T256] ? 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) 
[ 13.187662][ T256] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 13.187666][ T256] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 13.187672][ T256] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   13.187676][  T256] RIP: 0033:0x7f2e8feb7a4a
[ 13.187680][ T256] 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
[   13.187683][  T256] RSP: 002b:00007ffdd2f6d538 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[   13.187687][  T256] RAX: ffffffffffffffda RBX: 0000000022e1cb00 RCX: 00007f2e8feb7a4a
[   13.187689][  T256] RDX: 0000000000000040 RSI: 0000000022e1cb00 RDI: 0000000000000005
[   13.187691][  T256] RBP: 0000000022e1c910 R08: 00007f2e9005e200 R09: 000000000000000c
[   13.187693][  T256] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000040f200
[   13.187694][  T256] R13: 0000000022e1c910 R14: 0000000000000000 R15: 0000000000000001
| [   13.187694][  T256] R13: 0000000022e1c910 R14: 0000000000000000 R15: 0000000000000001
| [   13.187711][  T256]  </TASK>
| [   40.286044][   T12] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u16:0/12
| [ 40.286691][ T12] 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 
[   40.287096][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   40.287098][   T12] Workqueue: netns cleanup_net
[   40.287106][   T12] Call Trace:
[   40.287108][   T12]  <TASK>
[ 40.287111][ T12] dump_stack_lvl (lib/dump_stack.c:123) 
[ 40.287120][ T12] check_preemption_disabled (lib/smp_processor_id.c:52) 
[ 40.287129][ T12] 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 
[ 40.287147][ T12] ? nsim_destroy (drivers/net/netdevsim/netdev.c:1062) netdevsim 
[ 40.287165][ T12] nsim_destroy (drivers/net/netdevsim/netdev.c:1062) netdevsim 
[ 40.287185][ T12] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:426 drivers/net/netdevsim/dev.c:1429) netdevsim 
[ 40.287202][ T12] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1438 drivers/net/netdevsim/dev.c:1661) netdevsim 
[ 40.287221][ T12] nsim_dev_reload_down (drivers/net/netdevsim/dev.c:969) netdevsim 
[ 40.287237][ T12] devlink_reload (net/devlink/dev.c:462) 
[ 40.287248][ T12] ? __pfx_devlink_reload (net/devlink/dev.c:446) 
[ 40.287265][ T12] devlink_pernet_pre_exit (net/devlink/core.c:288 net/devlink/devl_internal.h:114 net/devlink/core.c:513) 
[ 40.287272][ T12] ? __pfx_devlink_pernet_pre_exit (net/devlink/core.c:496) 
[ 40.287275][ T12] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 40.287281][ T12] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 40.287298][ T12] ops_undo_list (net/core/net_namespace.c:162 net/core/net_namespace.c:235) 
[ 40.287309][ T12] ? __pfx_ops_undo_list (net/core/net_namespace.c:224) 
[ 40.287316][ T12] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:119 kernel/softirq.c:412) 
[ 40.287327][ T12] cleanup_net (net/core/net_namespace.c:688) 
[ 40.287334][ T12] ? __pfx_cleanup_net (net/core/net_namespace.c:652) 
[ 40.287341][ T12] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.287351][ T12] process_one_work (kernel/workqueue.c:3243) 
[ 40.287368][ T12] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 40.287381][ T12] ? assign_work (kernel/workqueue.c:1200) 
[ 40.287389][ T12] worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 40.287403][ T12] ? __pfx_worker_thread (kernel/workqueue.c:3348) 
[ 40.287409][ T12] kthread (kernel/kthread.c:464) 
[ 40.287415][ T12] ? __pfx_kthread (kernel/kthread.c:413) 
[ 40.287418][ T12] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 40.287422][ T12] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.287428][ T12] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.287433][ T12] ? __pfx_kthread (kernel/kthread.c:413) 
[ 40.287439][ T12] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 40.287442][ T12] ? __pfx_kthread (kernel/kthread.c:413) 
[ 40.287446][ T12] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [ 40.287446][ T12] ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
| [   40.287479][   T12]  </TASK>
| [   40.379271][  T228] BUG: using smp_processor_id() in preemptible [00000000] code: psample.sh/228
| [ 40.380074][ T228] 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 
[   40.380538][  T228] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   40.380539][  T228] Call Trace:
[   40.380541][  T228]  <TASK>
[ 40.380544][ T228] dump_stack_lvl (lib/dump_stack.c:123) 
[ 40.380552][ T228] check_preemption_disabled (lib/smp_processor_id.c:52) 
[ 40.380561][ T228] 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 
[ 40.380579][ T228] ? nsim_destroy (drivers/net/netdevsim/netdev.c:1062) netdevsim 
[ 40.380597][ T228] nsim_destroy (drivers/net/netdevsim/netdev.c:1062) netdevsim 
[ 40.380616][ T228] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:426 drivers/net/netdevsim/dev.c:1429) netdevsim 
[ 40.380633][ T228] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1438 drivers/net/netdevsim/dev.c:1661) netdevsim 
[ 40.380651][ T228] nsim_drv_remove (drivers/net/netdevsim/dev.c:1678) netdevsim 
[ 40.380668][ T228] device_release_driver_internal (drivers/base/dd.c:1274 drivers/base/dd.c:1295) 
[ 40.380674][ T228] ? klist_put (lib/klist.c:220) 
[ 40.380682][ T228] bus_remove_device (./include/linux/kobject.h:193 drivers/base/base.h:73 drivers/base/bus.c:586) 
[ 40.380692][ T228] device_del (drivers/base/core.c:3882) 
[ 40.380699][ T228] ? __pfx_device_del (drivers/base/core.c:3836) 
[ 40.380713][ T228] device_unregister (drivers/base/core.c:3799 drivers/base/core.c:3923) 
[ 40.380716][ T228] del_device_store (drivers/net/netdevsim/bus.c:230) netdevsim 
[ 40.380734][ T228] ? __pfx_del_device_store (drivers/net/netdevsim/bus.c:197) netdevsim 
[ 40.380747][ T228] ? sysfs_file_kobj (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/linux/rcupdate.h:1155 fs/sysfs/file.c:24) 
[ 40.380754][ T228] ? sysfs_file_kobj (fs/sysfs/file.c:26) 
[ 40.380762][ T228] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:138) 
[ 40.380764][ T228] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[ 40.380774][ T228] vfs_write (fs/read_write.c:593 fs/read_write.c:686) 
[ 40.380785][ T228] ? __pfx_vfs_write (fs/read_write.c:667) 
[ 40.380793][ T228] ? __pfx_lock_vma_under_rcu (mm/mmap_lock.c:137) 
[ 40.380804][ T228] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.380816][ T228] ksys_write (fs/read_write.c:738) 
[ 40.380821][ T228] ? __pfx_ksys_write (fs/read_write.c:728) 
[ 40.380824][ T228] ? 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) 
[ 40.380838][ T228] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 40.380846][ T228] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   40.380849][  T228] RIP: 0033:0x7f1ba72f5b77
[ 40.380854][ T228] 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
[   40.380857][  T228] RSP: 002b:00007fff4d4cf928 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[   40.380860][  T228] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f1ba72f5b77
[   40.380862][  T228] RDX: 0000000000000005 RSI: 000055f8bfea2360 RDI: 0000000000000001
[   40.380864][  T228] RBP: 000055f8bfea2360 R08: 0000000000000000 R09: 00007f1ba73684e0
[   40.380865][  T228] R10: 00007f1ba73683e0 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