======================================
| 0
| xx__-> [ 1423.878870][T17183] drop_monitor: Initializing network drop monitor service
| [ 1437.984630][T17199] BUG: using smp_processor_id() in preemptible [00000000] code: echo/17199
| [1437.985578][T17199] 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 
[ 1437.986055][T17199] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1437.986060][T17199] Call Trace:
[ 1437.986065][T17199]  <TASK>
[1437.986068][T17199] dump_stack_lvl (lib/dump_stack.c:123) 
[1437.986092][T17199] check_preemption_disabled (lib/smp_processor_id.c:52) 
[1437.986105][T17199] 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 
[1437.986125][T17199] ? nsim_destroy (drivers/net/netdevsim/netdev.c:1062) netdevsim 
[1437.986144][T17199] nsim_destroy (drivers/net/netdevsim/netdev.c:1062) netdevsim 
[1437.986164][T17199] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:426 drivers/net/netdevsim/dev.c:1429) netdevsim 
[1437.986182][T17199] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1438 drivers/net/netdevsim/dev.c:1661) netdevsim 
[1437.986201][T17199] nsim_drv_remove (drivers/net/netdevsim/dev.c:1678) netdevsim 
[1437.986219][T17199] device_release_driver_internal (drivers/base/dd.c:1274 drivers/base/dd.c:1295) 
[1437.986240][T17199] ? klist_put (lib/klist.c:220) 
[1437.986247][T17199] bus_remove_device (./include/linux/kobject.h:193 drivers/base/base.h:73 drivers/base/bus.c:586) 
[1437.986256][T17199] device_del (drivers/base/core.c:3882) 
[1437.986266][T17199] ? __pfx_device_del (drivers/base/core.c:3836) 
[1437.986283][T17199] device_unregister (drivers/base/core.c:3799 drivers/base/core.c:3923) 
[1437.986287][T17199] del_device_store (drivers/net/netdevsim/bus.c:230) netdevsim 
[1437.986306][T17199] ? __pfx_del_device_store (drivers/net/netdevsim/bus.c:197) netdevsim 
[1437.986320][T17199] ? sysfs_file_kobj (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/linux/rcupdate.h:1155 fs/sysfs/file.c:24) 
[1437.986337][T17199] ? sysfs_file_kobj (fs/sysfs/file.c:26) 
[1437.986346][T17199] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:138) 
[1437.986349][T17199] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[1437.986358][T17199] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[1437.986381][T17199] ? __pfx_vfs_write (fs/read_write.c:667) 
[1437.986390][T17199] ? __pfx_lock_vma_under_rcu (mm/mmap_lock.c:137) 
[1437.986406][T17199] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[1437.986429][T17199] ksys_write (fs/read_write.c:738) 
[1437.986434][T17199] ? __pfx_ksys_write (fs/read_write.c:728) 
[1437.986437][T17199] ? 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) 
[1437.986459][T17199] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[1437.986467][T17199] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1437.986476][T17199] RIP: 0033:0x7fcd7f396b77
[ 1437.986482][T17199] 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
[ 1437.986486][T17199] RSP: 002b:00007fff0bf36af8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 1437.986493][T17199] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fcd7f396b77
[ 1437.986495][T17199] RDX: 0000000000000005 RSI: 0000564a30d8d2f0 RDI: 0000000000000001
[ 1437.986497][T17199] RBP: 0000564a30d8d2f0 R08: 0000000000000004 R09: 0000000000000077
[ 1437.986499][T17199] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[ 1437.986501][T17199] R13: 00007fcd7f452760 R14: 0000000000000005 R15: 00007fcd7f44d9c0
| [ 1437.986501][T17199] R13: 00007fcd7f452760 R14: 0000000000000005 R15: 00007fcd7f44d9c0
| [ 1437.986519][T17199]  </TASK>
| [ 1455.514973][T17244] BUG: using smp_processor_id() in preemptible [00000000] code: echo/17244
| [1455.515701][T17244] 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 
[ 1455.516255][T17244] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1455.516258][T17244] Call Trace:
[ 1455.516260][T17244]  <TASK>
[1455.516263][T17244] dump_stack_lvl (lib/dump_stack.c:123) 
[1455.516279][T17244] check_preemption_disabled (lib/smp_processor_id.c:52) 
[1455.516289][T17244] 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 
[1455.516309][T17244] ? nsim_destroy (drivers/net/netdevsim/netdev.c:1062) netdevsim 
[1455.516329][T17244] nsim_destroy (drivers/net/netdevsim/netdev.c:1062) netdevsim 
[1455.516349][T17244] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:426 drivers/net/netdevsim/dev.c:1429) netdevsim 
[1455.516367][T17244] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1438 drivers/net/netdevsim/dev.c:1661) netdevsim 
[1455.516387][T17244] nsim_drv_remove (drivers/net/netdevsim/dev.c:1678) netdevsim 
[1455.516404][T17244] device_release_driver_internal (drivers/base/dd.c:1274 drivers/base/dd.c:1295) 
[1455.516412][T17244] ? klist_put (lib/klist.c:220) 
[1455.516420][T17244] bus_remove_device (./include/linux/kobject.h:193 drivers/base/base.h:73 drivers/base/bus.c:586) 
[1455.516429][T17244] device_del (drivers/base/core.c:3882) 
[1455.516437][T17244] ? __pfx_device_del (drivers/base/core.c:3836) 
[1455.516451][T17244] device_unregister (drivers/base/core.c:3799 drivers/base/core.c:3923) 
[1455.516455][T17244] del_device_store (drivers/net/netdevsim/bus.c:230) netdevsim 
[1455.516474][T17244] ? __pfx_del_device_store (drivers/net/netdevsim/bus.c:197) netdevsim 
[1455.516488][T17244] ? sysfs_file_kobj (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/linux/rcupdate.h:1155 fs/sysfs/file.c:24) 
[1455.516496][T17244] ? sysfs_file_kobj (fs/sysfs/file.c:26) 
[1455.516504][T17244] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:138) 
[1455.516507][T17244] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[1455.516516][T17244] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[1455.516530][T17244] ? __pfx_vfs_write (fs/read_write.c:667) 
[1455.516538][T17244] ? __pfx_lock_vma_under_rcu (mm/mmap_lock.c:137) 
[1455.516552][T17244] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[1455.516566][T17244] ksys_write (fs/read_write.c:738) 
[1455.516572][T17244] ? __pfx_ksys_write (fs/read_write.c:728) 
[1455.516575][T17244] ? 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) 
[1455.516590][T17244] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[1455.516598][T17244] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 1455.516602][T17244] RIP: 0033:0x7f4953b32b77
[ 1455.516607][T17244] 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
[ 1455.516609][T17244] RSP: 002b:00007ffd4bcf3938 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 1455.516613][T17244] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f4953b32b77
[ 1455.516615][T17244] RDX: 0000000000000005 RSI: 000055babdce02f0 RDI: 0000000000000001
[ 1455.516617][T17244] RBP: 000055babdce02f0 R08: 0000000000000004 R09: 0000000000000077
[ 1455.516619][T17244] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005


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