list_del corruption. next->prev should be ffff88809f3d5d90, but was ffff888091cbfdd0
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:56!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 22 Comm: kworker/1:1 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 91 13 02 fe 0f 0b 4c 89 ea 48 89 de 48 c7 c7 20 eb 8a 87 e8 7d 13 02 fe 0f 0b 48 89 de 48 c7 c7 80 ec 8a 87 e8 6c 13 02 fe <0f> 0b 48 89 de 48 c7 c7 20 ec 8a 87 e8 5b 13 02 fe 0f 0b 48 89 d9
RSP: 0018:ffff8880aa3c7c88 EFLAGS: 00010282
RAX: 0000000000000054 RBX: ffff88809f3d5d90 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff878aea20 RDI: ffffffff8a386c60
RBP: ffff8880aa3c7ca0 R08: ffffed1015d25029 R09: ffffed1015d25028
R10: ffffed1015d25028 R11: ffff8880ae928147 R12: ffff88809730a750
R13: ffffffff89273d60 R14: ffff88809f3d5b28 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000746138 CR3: 00000000a0184000 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 6607e63b61a31855 ]---
RIP: 0010:__list_del_entry_valid.cold.1+0x37/0x4a lib/list_debug.c:54
Code: e8 91 13 02 fe 0f 0b 4c 89 ea 48 89 de 48 c7 c7 20 eb 8a 87 e8 7d 13 02 fe 0f 0b 48 89 de 48 c7 c7 80 ec 8a 87 e8 6c 13 02 fe <0f> 0b 48 89 de 48 c7 c7 20 ec 8a 87 e8 5b 13 02 fe 0f 0b 48 89 d9
RSP: 0018:ffff8880aa3c7c88 EFLAGS: 00010282
RAX: 0000000000000054 RBX: ffff88809f3d5d90 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff878aea20 RDI: ffffffff8a386c60
RBP: ffff8880aa3c7ca0 R08: ffffed1015d25029 R09: ffffed1015d25028
R10: ffffed1015d25028 R11: ffff8880ae928147 R12: ffff88809730a750
R13: ffffffff89273d60 R14: ffff88809f3d5b28 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000746138 CR3: 000000000866a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400