list_del corruption, ffff880191302728->next is LIST_POISON1 (dead000000000100)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:47!
invalid opcode: 0000 [#1] SMP KASAN
CPU: 1 PID: 18840 Comm: kworker/1:5 Not tainted 4.18.0-rc8+ #184
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 20 67 3a 87 e8 0a 90 02 fe 0f 0b 4c 89 ea 48 89 de 48 c7 c7 c0 66 3a 87 e8 f6 8f 02 fe <0f> 0b 48 89 de 48 c7 c7 e0 67 3a 87 e8 e5 8f 02 fe 0f 0b 48 89 de 
RSP: 0018:ffff88018e59f388 EFLAGS: 00010282
RAX: 000000000000004e RBX: ffff880191302728 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81632481 RDI: 0000000000000001
RBP: ffff88018e59f3a0 R08: ffff88018b9b6140 R09: ffffed003b624fc0
R10: ffffed003b624fc0 R11: ffff8801db127e07 R12: dead000000000200
R13: dead000000000100 R14: ffff88018e59f3f8 R15: 1ffff10031cb3eac
FS:  0000000000000000(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffda61a3000 CR3: 0000000198d6e000 CR4: 00000000001406e0
Call Trace:
 __list_del_entry include/linux/list.h:117 [inline]
 list_del include/linux/list.h:125 [inline]
 p9_conn_cancel+0x8d6/0xd30 net/9p/trans_fd.c:224
 p9_read_work+0x568/0x1060 net/9p/trans_fd.c:401
 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 e2215bf00bf2e933 ]---
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 20 67 3a 87 e8 0a 90 02 fe 0f 0b 4c 89 ea 48 89 de 48 c7 c7 c0 66 3a 87 e8 f6 8f 02 fe <0f> 0b 48 89 de 48 c7 c7 e0 67 3a 87 e8 e5 8f 02 fe 0f 0b 48 89 de 
RSP: 0018:ffff88018e59f388 EFLAGS: 00010282
RAX: 000000000000004e RBX: ffff880191302728 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81632481 RDI: 0000000000000001
RBP: ffff88018e59f3a0 R08: ffff88018b9b6140 R09: ffffed003b624fc0
R10: ffffed003b624fc0 R11: ffff8801db127e07 R12: dead000000000200
R13: dead000000000100 R14: ffff88018e59f3f8 R15: 1ffff10031cb3eac
FS:  0000000000000000(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffda61a3000 CR3: 0000000007e6a000 CR4: 00000000001406e0