list_add corruption. next->prev should be prev (ffff8881c24646f0), but was ffff8881bdd6aff0. (next=ffffffff8a1dca60).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:25!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 4.20.0-rc6-next-20181210+ #164
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__list_add_valid.cold.2+0xf/0x2a lib/list_debug.c:23
Code: e5 80 88 e8 11 1f d2 fd 0f 0b 48 89 de 48 c7 c7 60 e5 80 88 e8 00 1f d2 fd 0f 0b 48 89 d9 48 c7 c7 20 e6 80 88 e8 ef 1e d2 fd <0f> 0b 48 89 f1 48 c7 c7 a0 e6 80 88 48 89 de e8 db 1e d2 fd 0f 0b
RSP: 0018:ffff8881d9afeca0 EFLAGS: 00010282
RAX: 0000000000000075 RBX: ffffffff8a1dca60 RCX: 0000000000000000
kobject: 'loop3' (00000000f44e21d7): kobject_uevent_env
RDX: 0000000000000000 RSI: ffffffff816621c5 RDI: 0000000000000005
RBP: ffff8881d9afecb8 R08: ffff8881d9af0240 R09: ffffed103b585020
R10: ffffed103b585020 R11: ffff8881dac28107 R12: ffff8881bdd682b0
R13: ffff8881bdd68040 R14: ffffffff8a1dc820 R15: ffffffff8a1dcab0
FS:  0000000000000000(0000) GS:ffff8881dac00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'loop3' (00000000f44e21d7): fill_kobj_path: path = '/devices/virtual/block/loop3'
CR2: 0000001b2d53c000 CR3: 00000001b7864000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_add include/linux/list.h:60 [inline]
 list_add_tail include/linux/list.h:93 [inline]
 neigh_alloc net/core/neighbour.c:395 [inline]
 ___neigh_create+0x14b7/0x2600 net/core/neighbour.c:553
 __neigh_create+0x30/0x40 net/core/neighbour.c:640
 ip6_finish_output2+0xa64/0x2940 net/ipv6/ip6_output.c:117
 ip6_finish_output+0x58c/0xc60 net/ipv6/ip6_output.c:154
 NF_HOOK_COND include/linux/netfilter.h:278 [inline]
 ip6_output+0x232/0x9d0 net/ipv6/ip6_output.c:171
 dst_output include/net/dst.h:444 [inline]
 NF_HOOK include/linux/netfilter.h:289 [inline]
 ndisc_send_skb+0x1005/0x1560 net/ipv6/ndisc.c:491
 ndisc_send_rs+0x134/0x6e0 net/ipv6/ndisc.c:685
 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3840
 call_timer_fn+0x272/0x920 kernel/time/timer.c:1325
 expire_timers kernel/time/timer.c:1362 [inline]
 __run_timers+0x7e5/0xc70 kernel/time/timer.c:1681
 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1694
 __do_softirq+0x308/0xb7e kernel/softirq.c:292
 run_ksoftirqd+0x5e/0x100 kernel/softirq.c:654
 smpboot_thread_fn+0x68b/0xa00 kernel/smpboot.c:164
 kthread+0x35a/0x440 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Modules linked in:
---[ end trace ec8485471b5b6e22 ]---
RIP: 0010:__list_add_valid.cold.2+0xf/0x2a lib/list_debug.c:23
Code: e5 80 88 e8 11 1f d2 fd 0f 0b 48 89 de 48 c7 c7 60 e5 80 88 e8 00 1f d2 fd 0f 0b 48 89 d9 48 c7 c7 20 e6 80 88 e8 ef 1e d2 fd <0f> 0b 48 89 f1 48 c7 c7 a0 e6 80 88 48 89 de e8 db 1e d2 fd 0f 0b
RSP: 0018:ffff8881d9afeca0 EFLAGS: 00010282
RAX: 0000000000000075 RBX: ffffffff8a1dca60 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff816621c5 RDI: 0000000000000005
RBP: ffff8881d9afecb8 R08: ffff8881d9af0240 R09: ffffed103b585020
kobject: 'loop0' (00000000ee4928c5): kobject_uevent_env
R10: ffffed103b585020 R11: ffff8881dac28107 R12: ffff8881bdd682b0
R13: ffff8881bdd68040 R14: ffffffff8a1dc820 R15: ffffffff8a1dcab0
kobject: 'loop0' (00000000ee4928c5): fill_kobj_path: path = '/devices/virtual/block/loop0'
FS:  0000000000000000(0000) GS:ffff8881dac00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d53c000 CR3: 00000001b7864000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400