list_del corruption, ffff88808d9515a0->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: 22691 Comm: syz-executor.0 Not tainted 6.8.0-rc3-syzkaller-00005-g99bd3cb0d12e #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 e1 12 bc 06 90 0f 0b 48 c7 c7 20 6b fe 8b 4c 89 fe e8 cf 12 bc 06 90 0f 0b 48 c7 c7 80 6b fe 8b 4c 89 fe e8 bd 12 bc 06 90 <0f> 0b 48 c7 c7 e0 6b fe 8b 4c 89 fe e8 ab 12 bc 06 90 0f 0b 48 c7
RSP: 0018:ffffc900046d77f0 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000122 RCX: c0da60849e408900
RDX: ffffc90009bf9000 RSI: 000000000002340c RDI: 000000000002340d
RBP: ffff88808d9514e0 R08: ffffffff81753a0c R09: 1ffff920008dae9c
R10: dffffc0000000000 R11: fffff520008dae9d R12: dffffc0000000000
R13: ffff888030640c00 R14: dead000000000100 R15: ffff88808d9515a0
FS:  00007fcafe4336c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc2366d66e4 CR3: 000000002e460000 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_stat+0x10e/0x280 net/9p/client.c:1680
 v9fs_mount+0x79b/0xc70 fs/9p/vfs_super.c:169
 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: 0033:0x7fcafd67dda9
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:00007fcafe4330c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fcafd7ac120 RCX: 00007fcafd67dda9
RDX: 0000000020000040 RSI: 0000000020000180 RDI: 0000000000000000
RBP: 00007fcafd6ca47a R08: 0000000020000300 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fcafd7ac120 R15: 00007fffd6545458
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0xf4/0x140 lib/list_debug.c:56
Code: e8 e1 12 bc 06 90 0f 0b 48 c7 c7 20 6b fe 8b 4c 89 fe e8 cf 12 bc 06 90 0f 0b 48 c7 c7 80 6b fe 8b 4c 89 fe e8 bd 12 bc 06 90 <0f> 0b 48 c7 c7 e0 6b fe 8b 4c 89 fe e8 ab 12 bc 06 90 0f 0b 48 c7
RSP: 0018:ffffc900046d77f0 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000122 RCX: c0da60849e408900
RDX: ffffc90009bf9000 RSI: 000000000002340c RDI: 000000000002340d
RBP: ffff88808d9514e0 R08: ffffffff81753a0c R09: 1ffff920008dae9c
R10: dffffc0000000000 R11: fffff520008dae9d R12: dffffc0000000000
R13: ffff888030640c00 R14: dead000000000100 R15: ffff88808d9515a0
FS:  00007fcafe4336c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc2366d66e4 CR3: 000000002e460000 CR4: 0000000000350ef0