kernel msg: ebtables bug: please report to author: entry offsets not in right order
==================================================================
BUG: KASAN: slab-out-of-bounds in __list_del_entry_valid+0xf1/0x100 lib/list_debug.c:51
Read of size 8 at addr ffff8881ba2fb4b0 by task kworker/0:2/2950

CPU: 0 PID: 2950 Comm: kworker/0:2 Not tainted 4.20.0-rc6-next-20181210+ #164
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_power_efficient neigh_periodic_work
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x39d lib/dump_stack.c:113
 print_address_description.cold.4+0x9/0x1ff mm/kasan/report.c:187
 kasan_report.cold.5+0x1b/0x39 mm/kasan/report.c:317
kernel msg: ebtables bug: please report to author: entry offsets not in right order
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/generic_report.c:135
 __list_del_entry_valid+0xf1/0x100 lib/list_debug.c:51
 __list_del_entry include/linux/list.h:117 [inline]
 list_del_init include/linux/list.h:159 [inline]
 neigh_mark_dead+0x13b/0x410 net/core/neighbour.c:125
 neigh_periodic_work+0x89a/0xc30 net/core/neighbour.c:905
 process_one_work+0xc90/0x1c40 kernel/workqueue.c:2153
 worker_thread+0x17f/0x1390 kernel/workqueue.c:2296
kernel msg: ebtables bug: please report to author: entries_size too small
 kthread+0x35a/0x440 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352

Allocated by task 11627:
 save_stack+0x43/0xd0 mm/kasan/common.c:73
 set_track mm/kasan/common.c:85 [inline]
 kasan_kmalloc+0xcb/0xd0 mm/kasan/common.c:482
 __do_kmalloc mm/slab.c:3709 [inline]
 __kmalloc+0x15d/0x760 mm/slab.c:3718
 kmalloc include/linux/slab.h:550 [inline]
 kzalloc include/linux/slab.h:740 [inline]
 __register_sysctl_table+0xc7/0xfb0 fs/proc/proc_sysctl.c:1307
 register_net_sysctl+0x29/0x30 net/sysctl_net.c:120
 neigh_sysctl_register+0x399/0x730 net/core/neighbour.c:3430
 addrconf_sysctl_register+0xb9/0x1e0 net/ipv6/addrconf.c:6790
 ipv6_add_dev+0xa86/0x13a0 net/ipv6/addrconf.c:446
 addrconf_notify+0x9fb/0x2770 net/ipv6/addrconf.c:3452
 notifier_call_chain+0x17e/0x380 kernel/notifier.c:93
 __raw_notifier_call_chain kernel/notifier.c:394 [inline]
 raw_notifier_call_chain+0x2d/0x40 kernel/notifier.c:401
 call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1737
 call_netdevice_notifiers_extack net/core/dev.c:1749 [inline]
 call_netdevice_notifiers net/core/dev.c:1763 [inline]
 register_netdevice+0xb7d/0x11a0 net/core/dev.c:8620
 tun_set_iff drivers/net/tun.c:2831 [inline]
 __tun_chr_ioctl+0x28f4/0x4830 drivers/net/tun.c:3065
 tun_chr_ioctl+0x2a/0x40 drivers/net/tun.c:3337
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:509 [inline]
 do_vfs_ioctl+0x1de/0x1790 fs/ioctl.c:696
 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:713
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl fs/ioctl.c:718 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 16:
 save_stack+0x43/0xd0 mm/kasan/common.c:73
 set_track mm/kasan/common.c:85 [inline]
 __kasan_slab_free+0x102/0x150 mm/kasan/common.c:444
 kasan_slab_free+0xe/0x10 mm/kasan/common.c:452
 __cache_free mm/slab.c:3485 [inline]
 kfree+0xcf/0x230 mm/slab.c:3804
 __rcu_reclaim kernel/rcu/rcu.h:233 [inline]
 rcu_do_batch kernel/rcu/tree.c:2452 [inline]
 invoke_rcu_callbacks kernel/rcu/tree.c:2773 [inline]
 rcu_process_callbacks+0xd91/0x15f0 kernel/rcu/tree.c:2754
 __do_softirq+0x308/0xb7e kernel/softirq.c:292

The buggy address belongs to the object at ffff8881ba2fb240
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 624 bytes inside of
 1024-byte region [ffff8881ba2fb240, ffff8881ba2fb640)
The buggy address belongs to the page:
page:ffffea0006e8be80 count:1 mapcount:0 mapping:ffff8881da800ac0 index:0xffff8881ba2fa040 compound_mapcount: 0
flags: 0x2fffc0000010200(slab|head)
raw: 02fffc0000010200 ffffea0006f9fa88 ffffea0006eb8188 ffff8881da800ac0
raw: ffff8881ba2fa040 ffff8881ba2fa040 0000000100000006 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881ba2fb380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff8881ba2fb400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8881ba2fb480: 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                     ^
 ffff8881ba2fb500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8881ba2fb580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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