list_add corruption. next->prev should be prev (ffff8880ae72d8d8), but was 0000000000000000. (next=ffff8880a94bc4f0).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:23!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 0 Comm:  Not tainted 4.20.0+ #6
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__list_add_valid.cold+0xf/0x3c lib/list_debug.c:23
Code: 35 fe eb d5 4c 89 e7 e8 fa 0f 35 fe eb a3 4c 89 f7 e8 f0 0f 35 fe e9 56 ff ff ff 4c 89 e1 48 c7 c7 40 85 81 88 e8 20 7d d7 fd <0f> 0b 48 89 f2 4c 89 e1 4c 89 ee 48 c7 c7 80 86 81 88 e8 09 7d d7
RSP: 0018:ffff8880ae707648 EFLAGS: 00010086
RAX: 0000000000000075 RBX: ffff888092a23800 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8167e5f6 RDI: ffffed1015ce0ebb
RBP: ffff8880ae707660 R08: 0000000000000075 R09: ffffed1015ce5021
R10: ffffed1015ce5020 R11: ffff8880ae728107 R12: ffff8880a94bc4f0
R13: ffff88809fc70530 R14: ffff8880ae7076e8 R15: ffff88809fc70530
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f7f38db0 CR3: 0000000081e34000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 __list_add include/linux/list.h:60 [inline]
 list_add include/linux/list.h:79 [inline]
 account_entity_enqueue+0x3a0/0x660 kernel/sched/fair.c:2678
 enqueue_entity+0x276/0x20b0 kernel/sched/fair.c:3902
 enqueue_task_fair+0x237/0x10c0 kernel/sched/fair.c:5133
 enqueue_task kernel/sched/core.c:730 [inline]
 activate_task+0x11d/0x470 kernel/sched/core.c:751
 ttwu_activate kernel/sched/core.c:1643 [inline]
 ttwu_do_activate+0xd4/0x1f0 kernel/sched/core.c:1702
 ttwu_queue kernel/sched/core.c:1847 [inline]
 try_to_wake_up+0x997/0x1480 kernel/sched/core.c:2057
 wake_up_process+0x10/0x20 kernel/sched/core.c:2129
 hrtimer_wakeup+0x48/0x60 kernel/time/hrtimer.c:1637
 __run_hrtimer kernel/time/hrtimer.c:1389 [inline]
 __hrtimer_run_queues+0x3a7/0x1050 kernel/time/hrtimer.c:1451
 hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1509
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1035 [inline]
 smp_apic_timer_interrupt+0x18d/0x760 arch/x86/kernel/apic/apic.c:1060
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
 </IRQ>
Modules linked in:
---[ end trace bdbe764aa79a81aa ]---
RIP: 0010:__list_add_valid.cold+0xf/0x3c lib/list_debug.c:23
Code: 35 fe eb d5 4c 89 e7 e8 fa 0f 35 fe eb a3 4c 89 f7 e8 f0 0f 35 fe e9 56 ff ff ff 4c 89 e1 48 c7 c7 40 85 81 88 e8 20 7d d7 fd <0f> 0b 48 89 f2 4c 89 e1 4c 89 ee 48 c7 c7 80 86 81 88 e8 09 7d d7
RSP: 0018:ffff8880ae707648 EFLAGS: 00010086
RAX: 0000000000000075 RBX: ffff888092a23800 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8167e5f6 RDI: ffffed1015ce0ebb
RBP: ffff8880ae707660 R08: 0000000000000075 R09: ffffed1015ce5021
R10: ffffed1015ce5020 R11: ffff8880ae728107 R12: ffff8880a94bc4f0
R13: ffff88809fc70530 R14: ffff8880ae7076e8 R15: ffff88809fc70530
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f7f38db0 CR3: 0000000081e34000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400