list_del corruption, ffff8801bcae72e8->next is LIST_POISON1 (dead000000000100)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:47!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5717 Comm: kworker/1:4 Not tainted 4.19.0-rc8+ #64
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
kobject: 'loop1' (00000000c90feced): kobject_uevent_env
Code: d7 fd 0f 0b 4c 89 e2 48 89 de 48 c7 c7 00 91 40 88 e8 3a 95 d7 fd 0f 0b 4c 89 ea 48 89 de 48 c7 c7 a0 90 40 88 e8 26 95 d7 fd <0f> 0b 48 89 de 48 c7 c7 c0 91 40 88 e8 15 95 d7 fd 0f 0b 48 89 de
kobject: 'loop1' (00000000c90feced): fill_kobj_path: path = '/devices/virtual/block/loop1'
RSP: 0018:ffff88019985f5b8 EFLAGS: 00010282
RAX: 000000000000004e RBX: ffff8801bcae72e8 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8164d435 RDI: 0000000000000005
RBP: ffff88019985f5d0 R08: ffff880199850300 R09: 0000000000000006
R10: 0000000000000000 R11: ffff880199850300 R12: dead000000000200
R13: dead000000000100 R14: ffff8801c83b82d0 R15: ffff8801c83b8290
FS:  0000000000000000(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000930004 CR3: 00000001c886d000 CR4: 00000000001406e0
Call Trace:
 __list_del_entry include/linux/list.h:117 [inline]
 list_del include/linux/list.h:125 [inline]
 p9_read_work+0xab6/0x10e0 net/9p/trans_fd.c:379
 process_one_work+0xc90/0x1b90 kernel/workqueue.c:2153
kobject: 'loop1' (00000000c90feced): kobject_uevent_env
kobject: 'loop1' (00000000c90feced): fill_kobj_path: path = '/devices/virtual/block/loop1'
 worker_thread+0x17f/0x1390 kernel/workqueue.c:2296
 kthread+0x35a/0x420 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413
Modules linked in:
---[ end trace d6c3c294fb594434 ]---
RIP: 0010:__list_del_entry_valid.cold.1+0x26/0x58 lib/list_debug.c:45
Code: d7 fd 0f 0b 4c 89 e2 48 89 de 48 c7 c7 00 91 40 88 e8 3a 95 d7 fd 0f 0b 4c 89 ea 48 89 de 48 c7 c7 a0 90 40 88 e8 26 95 d7 fd <0f> 0b 48 89 de 48 c7 c7 c0 91 40 88 e8 15 95 d7 fd 0f 0b 48 89 de
RSP: 0018:ffff88019985f5b8 EFLAGS: 00010282
RAX: 000000000000004e RBX: ffff8801bcae72e8 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8164d435 RDI: 0000000000000005
RBP: ffff88019985f5d0 R08: ffff880199850300 R09: 0000000000000006
R10: 0000000000000000 R11: ffff880199850300 R12: dead000000000200
R13: dead000000000100 R14: ffff8801c83b82d0 R15: ffff8801c83b8290
FS:  0000000000000000(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000930004 CR3: 00000001c886d000 CR4: 00000000001406e0