======================================
| xx__-> [ 5872.030259][T26750] GACT probability NOT on
| [ 5872.336953][T26754] drop_monitor: Initializing network drop monitor service
| [ 5886.735001][T26769] BUG: using smp_processor_id() in preemptible [00000000] code: echo/26769
| [5886.735793][T26769] 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 
[ 5886.736405][T26769] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5886.736408][T26769] Call Trace:
[ 5886.736410][T26769]  <TASK>
[5886.736413][T26769] dump_stack_lvl (lib/dump_stack.c:123) 
[5886.736425][T26769] check_preemption_disabled (lib/smp_processor_id.c:52) 
[5886.736432][T26769] 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 
[5886.736451][T26769] ? nsim_destroy (drivers/net/netdevsim/netdev.c:1062) netdevsim 
[5886.736467][T26769] nsim_destroy (drivers/net/netdevsim/netdev.c:1062) netdevsim 
[5886.736485][T26769] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:426 drivers/net/netdevsim/dev.c:1429) netdevsim 
[5886.736501][T26769] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1438 drivers/net/netdevsim/dev.c:1661) netdevsim 
[5886.736519][T26769] nsim_drv_remove (drivers/net/netdevsim/dev.c:1678) netdevsim 
[5886.736535][T26769] device_release_driver_internal (drivers/base/dd.c:1274 drivers/base/dd.c:1295) 
[5886.736546][T26769] ? klist_put (lib/klist.c:220) 
[5886.736554][T26769] bus_remove_device (./include/linux/kobject.h:193 drivers/base/base.h:73 drivers/base/bus.c:586) 
[5886.736563][T26769] device_del (drivers/base/core.c:3882) 
[5886.736570][T26769] ? __pfx_device_del (drivers/base/core.c:3836) 
[5886.736585][T26769] device_unregister (drivers/base/core.c:3799 drivers/base/core.c:3923) 
[5886.736588][T26769] del_device_store (drivers/net/netdevsim/bus.c:230) netdevsim 
[5886.736606][T26769] ? __pfx_del_device_store (drivers/net/netdevsim/bus.c:197) netdevsim 
[5886.736619][T26769] ? sysfs_file_kobj (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/linux/rcupdate.h:1155 fs/sysfs/file.c:24) 
[5886.736631][T26769] ? sysfs_file_kobj (fs/sysfs/file.c:26) 
[5886.736639][T26769] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:138) 
[5886.736642][T26769] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[5886.736651][T26769] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[5886.736665][T26769] ? __pfx_vfs_write (fs/read_write.c:667) 
[5886.736674][T26769] ? __pfx_lock_vma_under_rcu (mm/mmap_lock.c:137) 
[5886.736685][T26769] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[5886.736702][T26769] ksys_write (fs/read_write.c:738) 
[5886.736708][T26769] ? __pfx_ksys_write (fs/read_write.c:728) 
[5886.736711][T26769] ? 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) 
[5886.736727][T26769] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[5886.736733][T26769] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5886.736742][T26769] RIP: 0033:0x7f80cd117b77
[ 5886.736747][T26769] 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
[ 5886.736750][T26769] RSP: 002b:00007ffe9869d758 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5886.736754][T26769] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f80cd117b77
[ 5886.736756][T26769] RDX: 0000000000000005 RSI: 0000558a06c562f0 RDI: 0000000000000001
[ 5886.736758][T26769] RBP: 0000558a06c562f0 R08: 0000000000000004 R09: 0000000000000077
[ 5886.736760][T26769] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005
[ 5886.736761][T26769] R13: 00007f80cd1d3760 R14: 0000000000000005 R15: 00007f80cd1ce9c0
| [ 5886.736761][T26769] R13: 00007f80cd1d3760 R14: 0000000000000005 R15: 00007f80cd1ce9c0
| [ 5886.736779][T26769]  </TASK>
| [ 5904.245810][T26812] BUG: using smp_processor_id() in preemptible [00000000] code: echo/26812
| [5904.246664][T26812] 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 
[ 5904.247112][T26812] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 5904.247114][T26812] Call Trace:
[ 5904.247116][T26812]  <TASK>
[5904.247118][T26812] dump_stack_lvl (lib/dump_stack.c:123) 
[5904.247128][T26812] check_preemption_disabled (lib/smp_processor_id.c:52) 
[5904.247135][T26812] 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 
[5904.247154][T26812] ? nsim_destroy (drivers/net/netdevsim/netdev.c:1062) netdevsim 
[5904.247171][T26812] nsim_destroy (drivers/net/netdevsim/netdev.c:1062) netdevsim 
[5904.247189][T26812] __nsim_dev_port_del (drivers/net/netdevsim/dev.c:426 drivers/net/netdevsim/dev.c:1429) netdevsim 
[5904.247205][T26812] nsim_dev_reload_destroy (drivers/net/netdevsim/dev.c:1438 drivers/net/netdevsim/dev.c:1661) netdevsim 
[5904.247222][T26812] nsim_drv_remove (drivers/net/netdevsim/dev.c:1678) netdevsim 
[5904.247238][T26812] device_release_driver_internal (drivers/base/dd.c:1274 drivers/base/dd.c:1295) 
[5904.247245][T26812] ? klist_put (lib/klist.c:220) 
[5904.247253][T26812] bus_remove_device (./include/linux/kobject.h:193 drivers/base/base.h:73 drivers/base/bus.c:586) 
[5904.247262][T26812] device_del (drivers/base/core.c:3882) 
[5904.247270][T26812] ? __pfx_device_del (drivers/base/core.c:3836) 
[5904.247284][T26812] device_unregister (drivers/base/core.c:3799 drivers/base/core.c:3923) 
[5904.247288][T26812] del_device_store (drivers/net/netdevsim/bus.c:230) netdevsim 
[5904.247306][T26812] ? __pfx_del_device_store (drivers/net/netdevsim/bus.c:197) netdevsim 
[5904.247319][T26812] ? sysfs_file_kobj (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/linux/rcupdate.h:1155 fs/sysfs/file.c:24) 
[5904.247326][T26812] ? sysfs_file_kobj (fs/sysfs/file.c:26) 
[5904.247334][T26812] ? __pfx_sysfs_kf_write (fs/sysfs/file.c:138) 
[5904.247337][T26812] kernfs_fop_write_iter (fs/kernfs/file.c:334) 
[5904.247345][T26812] vfs_write (fs/read_write.c:594 fs/read_write.c:686) 
[5904.247357][T26812] ? __pfx_vfs_write (fs/read_write.c:667) 
[5904.247366][T26812] ? __pfx_lock_vma_under_rcu (mm/mmap_lock.c:137) 
[5904.247377][T26812] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[5904.247390][T26812] ksys_write (fs/read_write.c:738) 
[5904.247395][T26812] ? __pfx_ksys_write (fs/read_write.c:728) 
[5904.247398][T26812] ? 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) 
[5904.247412][T26812] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[5904.247419][T26812] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 5904.247422][T26812] RIP: 0033:0x7f3ef3da4b77
[ 5904.247427][T26812] 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
[ 5904.247429][T26812] RSP: 002b:00007ffebf605a18 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 5904.247433][T26812] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f3ef3da4b77
[ 5904.247435][T26812] RDX: 0000000000000005 RSI: 0000559650def2f0 RDI: 0000000000000001
[ 5904.247437][T26812] RBP: 0000559650def2f0 R08: 0000000000000004 R09: 0000000000000077
[ 5904.247439][T26812] R10: 0000000000000063 R11: 0000000000000246 R12: 0000000000000005


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