list_del corruption, ffff88812500caa0->next is LIST_POISON1 (dead000000000100)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:55!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 3159 Comm: syz-executor.3 Not tainted 5.15.91-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:__list_del_entry_valid+0xea/0x120 lib/list_debug.c:53
Code: 4c 89 f6 e8 30 a9 08 02 0f 0b 48 c7 c7 00 f2 e0 84 4c 89 f6 e8 1f a9 08 02 0f 0b 48 c7 c7 60 f2 e0 84 4c 89 f6 e8 0e a9 08 02 <0f> 0b 48 c7 c7 c0 f2 e0 84 4c 89 f6 e8 fd a8 08 02 0f 0b 48 c7 c7
RSP: 0018:ffffc90000b07420 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000100 RCX: 5c742d4841bef300
RDX: 1ffff92000160e4c RSI: ffffffff84e0ee60 RDI: 0000000000000001
RBP: ffffc90000b07440 R08: dffffc0000000000 R09: ffffed103ee465a0
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff11024a01945 R14: ffff88812500caa0 R15: dead000000000122
FS:  00007f062135f700(0000) GS:ffff8881f7200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffec001ff98 CR3: 0000000119f98000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_del_entry include/linux/list.h:132 [inline]
 list_del include/linux/list.h:146 [inline]
 p9_fd_cancelled+0x8b/0x210 net/9p/trans_fd.c:736
 p9_client_flush+0x337/0x560 net/9p/client.c:677
 p9_client_rpc+0x53f/0x10d0 net/9p/client.c:784
 p9_client_create+0x847/0xe90 net/9p/client.c:1052
 v9fs_session_init+0x207/0x1520 fs/9p/v9fs.c:409
 v9fs_mount+0x70/0x760 fs/9p/vfs_super.c:126
 legacy_get_tree+0xe8/0x180 fs/fs_context.c:610
 vfs_get_tree+0x87/0x250 fs/super.c:1499
 do_new_mount+0x1e1/0x930 fs/namespace.c:2994
 path_mount+0x612/0xc20 fs/namespace.c:3324
 do_mount fs/namespace.c:3337 [inline]
 __do_sys_mount fs/namespace.c:3545 [inline]
 __se_sys_mount+0x23e/0x2d0 fs/namespace.c:3522
 __x64_sys_mount+0xba/0xd0 fs/namespace.c:3522
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f062182e0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f062135f168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f062194e120 RCX: 00007f062182e0f9
RDX: 0000000020000140 RSI: 0000000020000400 RDI: 0000000000000000
RBP: 00007f0621889b39 R08: 0000000020000480 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffec43bdbdf R14: 00007f062135f300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 3b7e57ebe1c512c7 ]---
RIP: 0010:__list_del_entry_valid+0xea/0x120 lib/list_debug.c:53
Code: 4c 89 f6 e8 30 a9 08 02 0f 0b 48 c7 c7 00 f2 e0 84 4c 89 f6 e8 1f a9 08 02 0f 0b 48 c7 c7 60 f2 e0 84 4c 89 f6 e8 0e a9 08 02 <0f> 0b 48 c7 c7 c0 f2 e0 84 4c 89 f6 e8 fd a8 08 02 0f 0b 48 c7 c7
RSP: 0018:ffffc90000b07420 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000100 RCX: 5c742d4841bef300
RDX: 1ffff92000160e4c RSI: ffffffff84e0ee60 RDI: 0000000000000001
RBP: ffffc90000b07440 R08: dffffc0000000000 R09: ffffed103ee465a0
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff11024a01945 R14: ffff88812500caa0 R15: dead000000000122
FS:  00007f062135f700(0000) GS:ffff8881f7200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffec001ff98 CR3: 0000000119f98000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400