======================================
| [  401.652926][ T1485] bond0 (unregistering): Released all slaves
| [  401.653313][ T1485] ------------[ cut here ]------------
| [ 401.653624][ T1485] WARNING: CPU: 0 PID: 1485 at mm/slub.c:4790 free_large_kmalloc (mm/slub.c:4790 (discriminator 1)) 
| [  401.654124][ T1485] Modules linked in:
[  401.654887][ T1485] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  401.655242][ T1485] Workqueue: netns cleanup_net
[ 401.655525][ T1485] RIP: 0010:free_large_kmalloc (mm/slub.c:4790 (discriminator 1)) 
[ 401.655964][ T1485] Code: 01 48 8b 74 24 20 4c 89 e7 49 c7 c4 00 f0 ff ff e8 0d fa 06 00 e9 62 ff ff ff 48 c7 c6 18 17 5b 89 e8 6c 5d f2 ff 90 0f 0b 90 <0f> 0b 90 48 c7 c6 08 cd 60 89 5b 48 89 ef 5d 41 5c 41 5d e9 50 5d
All code
========
   0:	01 48 8b             	add    %ecx,-0x75(%rax)
   3:	74 24                	je     0x29
   5:	20 4c 89 e7          	and    %cl,-0x19(%rcx,%rcx,4)
   9:	49 c7 c4 00 f0 ff ff 	mov    $0xfffffffffffff000,%r12
  10:	e8 0d fa 06 00       	call   0x6fa22
  15:	e9 62 ff ff ff       	jmp    0xffffffffffffff7c
  1a:	48 c7 c6 18 17 5b 89 	mov    $0xffffffff895b1718,%rsi
  21:	e8 6c 5d f2 ff       	call   0xfffffffffff25d92
  26:	90                   	nop
  27:	0f 0b                	ud2
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	48 c7 c6 08 cd 60 89 	mov    $0xffffffff8960cd08,%rsi
  34:	5b                   	pop    %rbx
  35:	48 89 ef             	mov    %rbp,%rdi
  38:	5d                   	pop    %rbp
  39:	41 5c                	pop    %r12
  3b:	41 5d                	pop    %r13
  3d:	e9                   	.byte 0xe9
  3e:	50                   	push   %rax
  3f:	5d                   	pop    %rbp

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	48 c7 c6 08 cd 60 89 	mov    $0xffffffff8960cd08,%rsi
   a:	5b                   	pop    %rbx
   b:	48 89 ef             	mov    %rbp,%rdi
   e:	5d                   	pop    %rbp
   f:	41 5c                	pop    %r12
  11:	41 5d                	pop    %r13
  13:	e9                   	.byte 0xe9
  14:	50                   	push   %rax
  15:	5d                   	pop    %rbp
[  401.656956][ T1485] RSP: 0018:ffffc90003487908 EFLAGS: 00010202
[  401.657320][ T1485] RAX: 0080000000002000 RBX: ffff88800912a000 RCX: 0000000000000000
[  401.657711][ T1485] RDX: 00000000000000ff RSI: ffffffff88089370 RDI: ffffea00006aa240
[  401.658146][ T1485] RBP: ffffea00006aa240 R08: 0000000000000000 R09: fffffbfff133db04
[  401.658538][ T1485] R10: 0000000000000003 R11: ffffffff89b588d8 R12: ffffffff88089370
[  401.658946][ T1485] R13: ffff88800912b078 R14: 1ffff92000690f27 R15: ffff88800912ad00
[  401.659352][ T1485] FS:  0000000000000000(0000) GS:ffff8880ab3ad000(0000) knlGS:0000000000000000
[  401.659825][ T1485] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  401.660186][ T1485] CR2: 000055f8af7cf2d8 CR3: 000000001c333001 CR4: 0000000000772ef0
[  401.660593][ T1485] PKRU: 55555554
[  401.660797][ T1485] Call Trace:
[  401.661009][ T1485]  <TASK>
[ 401.661182][ T1485] bond_uninit (./include/net/bonding.h:869 drivers/net/bonding/bond_main.c:6143) 
[ 401.661453][ T1485] ? bond_siocdevprivate (drivers/net/bonding/bond_main.c:6132) 
[ 401.661719][ T1485] ? notifier_call_chain (kernel/notifier.c:87 (discriminator 2)) 
[ 401.662003][ T1485] unregister_netdevice_many_notify (net/core/dev.c:12177) 
[ 401.662354][ T1485] ? unregister_netdevice_queue (net/core/dev.c:12053) 
[ 401.662677][ T1485] ? dev_ingress_queue_create (net/core/dev.c:12081) 
[ 401.662950][ T1485] ? unregister_netdevice_many (net/core/dev.c:12052) 
[ 401.663226][ T1485] ? bond_net_exit_rtnl (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 drivers/net/bonding/bond_main.c:6651) 
[ 401.663490][ T1485] ? __lock_release (kernel/locking/lockdep.c:5536) 
[ 401.663766][ T1485] ops_undo_list (net/core/net_namespace.c:188 net/core/net_namespace.c:247) 
[ 401.664050][ T1485] ? netns_get (net/core/net_namespace.c:222) 
[ 401.664328][ T1485] ? cleanup_net (./include/linux/list.h:183 net/core/net_namespace.c:679) 
[ 401.664603][ T1485] cleanup_net (net/core/net_namespace.c:684) 
[ 401.664879][ T1485] ? net_passive_dec (net/core/net_namespace.c:648) 
[ 401.665192][ T1485] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 401.665463][ T1485] process_one_work (kernel/workqueue.c:3241) 
[ 401.665741][ T1485] ? pwq_dec_nr_in_flight (kernel/workqueue.c:3138) 
[ 401.666025][ T1485] ? assign_work (kernel/workqueue.c:1204) 
[ 401.666293][ T1485] worker_thread (kernel/workqueue.c:3313 kernel/workqueue.c:3400) 
[ 401.666562][ T1485] ? rescuer_thread (kernel/workqueue.c:3346) 
[ 401.666829][ T1485] kthread (kernel/kthread.c:463) 
[ 401.667044][ T1485] ? kthread_is_per_cpu (kernel/kthread.c:412) 
[ 401.667310][ T1485] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 401.667577][ T1485] ? __lock_release (kernel/locking/lockdep.c:5536) 
[ 401.667846][ T1485] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 401.668122][ T1485] ? kthread_is_per_cpu (kernel/kthread.c:412) 
[ 401.668398][ T1485] ret_from_fork (arch/x86/kernel/process.c:154) 
[ 401.668666][ T1485] ? kthread_is_per_cpu (kernel/kthread.c:412) 


Finger prints:
free_large_kmalloc:bond_uninit:unregister_netdevice_many_notify:ops_undo_list:cleanup_net