======================================
| [   24.778598][  T243] bond0 (unregistering): Released all slaves
| [   24.778978][  T243] ------------[ cut here ]------------
| [ 24.779263][ T243] WARNING: CPU: 1 PID: 243 at mm/slub.c:4790 free_large_kmalloc (mm/slub.c:4790 (discriminator 1)) 
| [   24.779797][  T243] Modules linked in:
[   24.780576][  T243] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   24.780914][  T243] Workqueue: netns cleanup_net
[ 24.781213][ T243] RIP: 0010:free_large_kmalloc (mm/slub.c:4790 (discriminator 1)) 
[ 24.781574][ T243] 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 db 89 e8 6c 5d f2 ff 90 0f 0b 90 <0f> 0b 90 48 c7 c6 08 cd e0 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 db 89 	mov    $0xffffffff89db1718,%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 e0 89 	mov    $0xffffffff89e0cd08,%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 e0 89 	mov    $0xffffffff89e0cd08,%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
[   24.782570][  T243] RSP: 0018:ffffc90000bb7908 EFLAGS: 00010202
[   24.782910][  T243] RAX: 0080000000002000 RBX: ffff88800988a000 RCX: 0000000000000000
[   24.783439][  T243] RDX: 00000000000000ff RSI: ffffffff88889370 RDI: ffffea0000492240
[   24.783848][  T243] RBP: ffffea0000492240 R08: 0000000000000000 R09: fffffbfff143db04
[   24.784267][  T243] R10: 0000000000000003 R11: ffffffff8a3588d8 R12: ffffffff88889370
[   24.784841][  T243] R13: ffff88800988b078 R14: 1ffff92000176f27 R15: ffff88800988ad00
[   24.785258][  T243] FS:  0000000000000000(0000) GS:ffff8880aac2d000(0000) knlGS:0000000000000000
[   24.785816][  T243] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.786170][  T243] CR2: 00007f16a6070c80 CR3: 0000000013d33006 CR4: 0000000000772ef0
[   24.786590][  T243] PKRU: 55555554
[   24.786795][  T243] Call Trace:
[   24.787002][  T243]  <TASK>
[ 24.787158][ T243] bond_uninit (./include/net/bonding.h:869 drivers/net/bonding/bond_main.c:6143) 
[ 24.787448][ T243] ? bond_siocdevprivate (drivers/net/bonding/bond_main.c:6132) 
[ 24.787724][ T243] ? notifier_call_chain (kernel/notifier.c:87 (discriminator 2)) 
[ 24.787999][ T243] unregister_netdevice_many_notify (net/core/dev.c:12177) 
[ 24.788361][ T243] ? unregister_netdevice_queue (net/core/dev.c:12053) 
[ 24.788697][ T243] ? dev_ingress_queue_create (net/core/dev.c:12081) 
[ 24.788963][ T243] ? unregister_netdevice_many (net/core/dev.c:12052) 
[ 24.789243][ T243] ? 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) 
[ 24.789520][ T243] ? __lock_release (kernel/locking/lockdep.c:5536) 
[ 24.789801][ T243] ops_undo_list (net/core/net_namespace.c:188 net/core/net_namespace.c:247) 
[ 24.790088][ T243] ? netns_get (net/core/net_namespace.c:222) 
[ 24.790363][ T243] ? cleanup_net (./include/linux/list.h:183 net/core/net_namespace.c:679) 
[ 24.790654][ T243] cleanup_net (net/core/net_namespace.c:684) 
[ 24.790926][ T243] ? net_passive_dec (net/core/net_namespace.c:648) 
[ 24.791209][ T243] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 24.791500][ T243] process_one_work (kernel/workqueue.c:3241) 
[ 24.791781][ T243] ? pwq_dec_nr_in_flight (kernel/workqueue.c:3138) 
[ 24.792066][ T243] ? assign_work (kernel/workqueue.c:1204) 
[ 24.792350][ T243] worker_thread (kernel/workqueue.c:3313 kernel/workqueue.c:3400) 
[ 24.792629][ T243] ? rescuer_thread (kernel/workqueue.c:3346) 
[ 24.792896][ T243] kthread (kernel/kthread.c:463) 
[ 24.793120][ T243] ? kthread_is_per_cpu (kernel/kthread.c:412) 
[ 24.793397][ T243] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 24.793668][ T243] ? __lock_release (kernel/locking/lockdep.c:5536) 
[ 24.793937][ T243] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:751) 
[ 24.794212][ T243] ? kthread_is_per_cpu (kernel/kthread.c:412) 
[ 24.794496][ T243] ret_from_fork (arch/x86/kernel/process.c:154) 
[ 24.794762][ T243] ? kthread_is_per_cpu (kernel/kthread.c:412) 


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