list_del corruption. next->prev should be ffff88808d37d010, but was ffff888094abd950
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:56!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 17 Comm: kworker/1:0 Not tainted 4.20.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_power_efficient neigh_periodic_work
RIP: 0010:__list_del_entry_valid.cold.1+0x37/0x4a lib/list_debug.c:54
Code: e8 11 a9 1e fe 0f 0b 4c 89 ea 48 89 de 48 c7 c7 a0 1b 67 87 e8 fd a8 1e fe 0f 0b 48 89 de 48 c7 c7 00 1d 67 87 e8 ec a8 1e fe <0f> 0b 48 89 de 48 c7 c7 a0 1c 67 87 e8 db a8 1e fe 0f 0b 48 89 d9
RSP: 0018:ffff8880a9867c88 EFLAGS: 00010282
RAX: 0000000000000054 RBX: ffff88808d37d010 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff87671aa0 RDI: ffffffff8a146c60
RBP: ffff8880a9867ca0 R08: ffffed1015d65029 R09: ffffed1015d65028
R10: ffffed1015d65028 R11: ffff8880aeb28147 R12: ffff888095c27490
R13: ffffffff8903aa60 R14: ffff88808d37cda8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000090f7d000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_del_entry include/linux/list.h:117 [inline]
 list_del_init include/linux/list.h:159 [inline]
 neigh_mark_dead+0x86/0x210 net/core/neighbour.c:125
 neigh_periodic_work+0x56f/0x870 net/core/neighbour.c:905
 process_one_work+0x7b9/0x15a0 kernel/workqueue.c:2153
 worker_thread+0x85/0xb60 kernel/workqueue.c:2296
 kthread+0x324/0x3e0 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Modules linked in:
---[ end trace 7bab0a0af802de1c ]---
RIP: 0010:__list_del_entry_valid.cold.1+0x37/0x4a lib/list_debug.c:54
Code: e8 11 a9 1e fe 0f 0b 4c 89 ea 48 89 de 48 c7 c7 a0 1b 67 87 e8 fd a8 1e fe 0f 0b 48 89 de 48 c7 c7 00 1d 67 87 e8 ec a8 1e fe <0f> 0b 48 89 de 48 c7 c7 a0 1c 67 87 e8 db a8 1e fe 0f 0b 48 89 d9
RSP: 0018:ffff8880a9867c88 EFLAGS: 00010282
RAX: 0000000000000054 RBX: ffff88808d37d010 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff87671aa0 RDI: ffffffff8a146c60
RBP: ffff8880a9867ca0 R08: ffffed1015d65029 R09: ffffed1015d65028
R10: ffffed1015d65028 R11: ffff8880aeb28147 R12: ffff888095c27490
R13: ffffffff8903aa60 R14: ffff88808d37cda8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000000846a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400