list_del corruption. prev->next should be ffff8881ce7c0b70, but was ffff8881c3d24730
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:53!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 4.20.0-rc4+ #335
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+0x48/0x4a lib/list_debug.c:51
Code: d6 60 88 e8 b2 fd d1 fd 0f 0b 48 89 de 48 c7 c7 40 d8 60 88 e8 a1 fd d1 fd 0f 0b 48 89 de 48 c7 c7 e0 d7 60 88 e8 90 fd d1 fd <0f> 0b 48 89 d9 48 c7 c7 a0 d8 60 88 e8 7f fd d1 fd 0f 0b 48 89 f1
kobject: 'loop1' (00000000579e6d20): kobject_uevent_env
RSP: 0018:ffff8881d9b1f440 EFLAGS: 00010282
RAX: 0000000000000054 RBX: ffff8881ce7c0b70 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8165eae5 RDI: 0000000000000005
RBP: ffff8881d9b1f458 R08: ffff8881d9b12300 R09: ffffed103b5c5020
R10: ffffed103b5c5020 R11: ffff8881dae28107 R12: ffff8881c3d24730
R13: ffffffff89fd0da0 R14: ffff8881d9b1f560 R15: 1ffff1103b363e94
FS:  0000000000000000(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kobject: 'loop1' (00000000579e6d20): fill_kobj_path: path = '/devices/virtual/block/loop1'
CR2: 0000000001a007d0 CR3: 00000001c1933000 CR4: 00000000001406f0
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+0x13b/0x410 net/core/neighbour.c:125
kobject: 'loop3' (0000000061416dba): kobject_uevent_env
kobject: 'loop3' (0000000061416dba): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop3' (0000000061416dba): kobject_uevent_env
 neigh_periodic_work+0x89a/0xc30 net/core/neighbour.c:905
kobject: 'loop3' (0000000061416dba): fill_kobj_path: path = '/devices/virtual/block/loop3'
 process_one_work+0xc90/0x1c40 kernel/workqueue.c:2153
kobject: 'loop3' (0000000061416dba): kobject_uevent_env
kobject: 'loop3' (0000000061416dba): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop2' (000000000161f0bf): kobject_uevent_env
kobject: 'loop2' (000000000161f0bf): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop5' (000000006658dc3a): kobject_uevent_env
kobject: 'loop5' (000000006658dc3a): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop0' (00000000a4f9104a): kobject_uevent_env
kobject: 'loop0' (00000000a4f9104a): fill_kobj_path: path = '/devices/virtual/block/loop0'
kobject: 'loop2' (000000000161f0bf): kobject_uevent_env
 worker_thread+0x17f/0x1390 kernel/workqueue.c:2296
kobject: 'loop2' (000000000161f0bf): fill_kobj_path: path = '/devices/virtual/block/loop2'
kobject: 'loop4' (0000000073a2607d): kobject_uevent_env
 kthread+0x35a/0x440 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Modules linked in:
kobject: 'loop4' (0000000073a2607d): fill_kobj_path: path = '/devices/virtual/block/loop4'
---[ end trace b3c6b582b0f7a631 ]---
kobject: 'loop1' (00000000579e6d20): kobject_uevent_env
RIP: 0010:__list_del_entry_valid.cold.1+0x48/0x4a lib/list_debug.c:51
Code: d6 60 88 e8 b2 fd d1 fd 0f 0b 48 89 de 48 c7 c7 40 d8 60 88 e8 a1 fd d1 fd 0f 0b 48 89 de 48 c7 c7 e0 d7 60 88 e8 90 fd d1 fd <0f> 0b 48 89 d9 48 c7 c7 a0 d8 60 88 e8 7f fd d1 fd 0f 0b 48 89 f1
kobject: 'loop1' (00000000579e6d20): fill_kobj_path: path = '/devices/virtual/block/loop1'
RSP: 0018:ffff8881d9b1f440 EFLAGS: 00010282
RAX: 0000000000000054 RBX: ffff8881ce7c0b70 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8165eae5 RDI: 0000000000000005
RBP: ffff8881d9b1f458 R08: ffff8881d9b12300 R09: ffffed103b5c5020
kobject: 'loop4' (0000000073a2607d): kobject_uevent_env
R10: ffffed103b5c5020 R11: ffff8881dae28107 R12: ffff8881c3d24730
R13: ffffffff89fd0da0 R14: ffff8881d9b1f560 R15: 1ffff1103b363e94
FS:  0000000000000000(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000
kobject: 'loop4' (0000000073a2607d): fill_kobj_path: path = '/devices/virtual/block/loop4'
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001a007d0 CR3: 00000001c1933000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
kobject: 'loop4' (0000000073a2607d): kobject_uevent_env
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400