list_del corruption, ffff880197770128->next is LIST_POISON1 (dead000000000100)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:47!
invalid opcode: 0000 [#1] SMP KASAN
CPU: 0 PID: 25 Comm: kworker/0:1 Not tainted 4.18.0-rc6+ #168
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events p9_read_work
RIP: 0010:__list_del_entry_valid.cold.1+0x26/0x58 lib/list_debug.c:45
Code: 02 fe 0f 0b 4c 89 e2 48 89 de 48 c7 c7 a0 68 3a 87 e8 8a 94 02 fe 0f 0b 4c 89 ea 48 89 de 48 c7 c7 40 68 3a 87 e8 76 94 02 fe <0f> 0b 48 89 de 48 c7 c7 60 69 3a 87 e8 65 94 02 fe 0f 0b 48 89 de 
RSP: 0018:ffff8801d98375b0 EFLAGS: 00010286
RAX: 000000000000004e RBX: ffff880197770128 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81632531 RDI: 0000000000000001
RBP: ffff8801d98375c8 R08: ffff8801d983a680 R09: ffffed003b604fc0
R10: ffffed003b604fc0 R11: ffff8801db027e07 R12: dead000000000200
R13: dead000000000100 R14: ffff880197770100 R15: ffff8801acf55050
FS:  0000000000000000(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000706914 CR3: 00000001c4236000 CR4: 00000000001426f0
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]
 p9_read_work+0xa29/0x1060 net/9p/trans_fd.c:375
 process_one_work+0xc73/0x1ba0 kernel/workqueue.c:2153
 worker_thread+0x189/0x13c0 kernel/workqueue.c:2296
 kthread+0x345/0x410 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
---[ end trace 6311c2b3214689af ]---
RIP: 0010:__list_del_entry_valid.cold.1+0x26/0x58 lib/list_debug.c:45
Code: 02 fe 0f 0b 4c 89 e2 48 89 de 48 c7 c7 a0 68 3a 87 e8 8a 94 02 fe 0f 0b 4c 89 ea 48 89 de 48 c7 c7 40 68 3a 87 e8 76 94 02 fe <0f> 0b 48 89 de 48 c7 c7 60 69 3a 87 e8 65 94 02 fe 0f 0b 48 89 de 
RSP: 0018:ffff8801d98375b0 EFLAGS: 00010286
RAX: 000000000000004e RBX: ffff880197770128 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81632531 RDI: 0000000000000001
RBP: ffff8801d98375c8 R08: ffff8801d983a680 R09: ffffed003b604fc0
R10: ffffed003b604fc0 R11: ffff8801db027e07 R12: dead000000000200
R13: dead000000000100 R14: ffff880197770100 R15: ffff8801acf55050
FS:  0000000000000000(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000706914 CR3: 00000001c4236000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400