Enabling of bearer <udp:syz0> rejected, already enabled
list_del corruption, ffffea00027b7b88->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: 5 Comm: kworker/0:0 Not tainted 5.0.0-rc2+ #12
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 85 4a d7 fd 0f 0b 4c 89 f6 48 c7 c7 c0 b4 81 88 e8 74 4a d7 fd 0f 0b 4c 89 ea 4c 89 f6 48 c7 c7 00 b4 81 88 e8 60 4a d7 fd <0f> 0b 4c 89 e2 4c 89 f6 48 c7 c7 60 b4 81 88 e8 4c 4a d7 fd 0f 0b
RSP: 0018:ffff8880a944f888 EFLAGS: 00010082
RAX: 000000000000004e RBX: ffffe8ffffc893f8 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81685456 RDI: ffffed1015289f03
RBP: ffff8880a944f8a0 R08: 000000000000004e R09: fffffbfff13332f1
R10: fffffbfff13332f0 R11: ffffffff89999783 R12: dead000000000200
R13: dead000000000100 R14: ffffea00027b7b88 R15: ffffea00027b7b88
FS:  0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000738060 CR3: 00000000984d4000 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 include/linux/list.h:125 [inline]
 free_block+0xd8/0x250 mm/slab.c:3405
 drain_array_locked+0x36/0x90 mm/slab.c:2197
 drain_array+0x8c/0xb0 mm/slab.c:4011
 cache_reap+0xf4/0x280 mm/slab.c:4052
 process_one_work+0xd0c/0x1ce0 kernel/workqueue.c:2153
 worker_thread+0x143/0x14a0 kernel/workqueue.c:2296
 kthread+0x357/0x430 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Modules linked in:

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