list_del corruption, ffffea0002544608->next is LIST_POISON1 (dead000000000100)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:45!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 23806 Comm: kworker/0:1 Not tainted 5.2.0-rc1+ #4
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events cache_reap
RIP: 0010:__list_del_entry_valid.cold+0x23/0x4f lib/list_debug.c:45
Code: e8 45 53 25 fe 0f 0b 4c 89 f6 48 c7 c7 e0 b7 a4 87 e8 34 53 25 fe 0f 0b 4c 89 ea 4c 89 f6 48 c7 c7 20 b7 a4 87 e8 20 53 25 fe <0f> 0b 4c 89 e2 4c 89 f6 48 c7 c7 80 b7 a4 87 e8 0c 53 25 fe 0f 0b
RSP: 0018:ffff88809b517bd8 EFLAGS: 00010086
RAX: 000000000000004e RBX: ffffe8ffffc762e0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815ac7e6 RDI: ffffed10136a2f6d
RBP: ffff88809b517bf0 R08: 000000000000004e R09: ffffed1015d06011
R10: ffffed1015d06010 R11: ffff8880ae830087 R12: dead000000000200
R13: dead000000000100 R14: ffffea0002544608 R15: ffffea0002544608
FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f211d4fc000 CR3: 00000000a881c000 CR4: 00000000001406f0
Call Trace:
 __list_del_entry include/linux/list.h:117 [inline]
 list_del include/linux/list.h:125 [inline]
 free_block+0xd8/0x250 mm/slab.c:3350
 drain_array_locked+0x36/0x90 mm/slab.c:2142
 drain_array+0x8c/0xb0 mm/slab.c:3960
 cache_reap+0xf4/0x280 mm/slab.c:4001
 process_one_work+0x989/0x1790 kernel/workqueue.c:2269
 worker_thread+0x98/0xe40 kernel/workqueue.c:2415
 kthread+0x354/0x420 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Modules linked in:

======================================================