list_del corruption, ffff88808c77a0c0->next is LIST_POISON1 (dead000000000100)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:58!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 PID: 1708 Comm: syz-executor.0 Not tainted 6.8.0-rc5-syzkaller-00029-g39133352cbed #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:__list_del_entry_valid_or_report+0xf4/0x140 lib/list_debug.c:56
Code: e8 61 16 bc 06 90 0f 0b 48 c7 c7 20 71 fe 8b 4c 89 fe e8 4f 16 bc 06 90 0f 0b 48 c7 c7 80 71 fe 8b 4c 89 fe e8 3d 16 bc 06 90 <0f> 0b 48 c7 c7 e0 71 fe 8b 4c 89 fe e8 2b 16 bc 06 90 0f 0b 48 c7
RSP: 0018:ffffc900047b7870 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000122 RCX: 034668e2f8510900
RDX: ffffc90009a5a000 RSI: 0000000000017372 RDI: 0000000000017373
RBP: ffff88808c77a000 R08: ffffffff81753f3c R09: 1ffff920008f6eac
R10: dffffc0000000000 R11: fffff520008f6ead R12: dffffc0000000000
R13: ffff888024485800 R14: dead000000000100 R15: ffff88808c77a0c0
FS:  00007fbb6db126c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3866fd4000 CR3: 0000000040bf2000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:124 [inline]
 __list_del_entry include/linux/list.h:215 [inline]
 list_del include/linux/list.h:229 [inline]
 p9_fd_cancelled+0x99/0x220 net/9p/trans_fd.c:737
 p9_client_flush+0x3c4/0x540 net/9p/client.c:615
 p9_client_rpc+0x8d3/0xac0 net/9p/client.c:738
 p9_client_getattr_dotl+0xa9/0x1a0 net/9p/client.c:1732
 v9fs_mount+0x7cf/0xc70 fs/9p/vfs_super.c:158
 legacy_get_tree+0xf0/0x190 fs/fs_context.c:662
 vfs_get_tree+0x92/0x2a0 fs/super.c:1784
 do_new_mount+0x2be/0xb40 fs/namespace.c:3352
 do_mount fs/namespace.c:3692 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875
 do_syscall_64+0xfb/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fbb6ce7dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbb6db120c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fbb6cfac120 RCX: 00007fbb6ce7dda9
RDX: 0000000020000140 RSI: 0000000020000400 RDI: 0000000000000000
RBP: 00007fbb6ceca47a R08: 0000000020000480 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fbb6cfac120 R15: 00007ffd2d61a828
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0xf4/0x140 lib/list_debug.c:56
Code: e8 61 16 bc 06 90 0f 0b 48 c7 c7 20 71 fe 8b 4c 89 fe e8 4f 16 bc 06 90 0f 0b 48 c7 c7 80 71 fe 8b 4c 89 fe e8 3d 16 bc 06 90 <0f> 0b 48 c7 c7 e0 71 fe 8b 4c 89 fe e8 2b 16 bc 06 90 0f 0b 48 c7
RSP: 0018:ffffc900047b7870 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000122 RCX: 034668e2f8510900
RDX: ffffc90009a5a000 RSI: 0000000000017372 RDI: 0000000000017373
RBP: ffff88808c77a000 R08: ffffffff81753f3c R09: 1ffff920008f6eac
R10: dffffc0000000000 R11: fffff520008f6ead R12: dffffc0000000000
R13: ffff888024485800 R14: dead000000000100 R15: ffff88808c77a0c0
FS:  00007fbb6db126c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3866fd4000 CR3: 0000000040bf2000 CR4: 0000000000350ef0