list_del corruption, ffff88810f9b1e08->next is LIST_POISON1 (dead000000000100)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:58!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 2429 Comm: syz-executor.1 Not tainted 6.7.0-rc4-syzkaller-00111-g5e3f5b81de80 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:__list_del_entry_valid_or_report+0xee/0x130 lib/list_debug.c:56
Code: 4c 89 fe e8 c4 70 7c 02 0f 0b 48 c7 c7 40 48 a9 85 4c 89 fe e8 b3 70 7c 02 0f 0b 48 c7 c7 a0 48 a9 85 4c 89 fe e8 a2 70 7c 02 <0f> 0b 48 c7 c7 00 49 a9 85 4c 89 fe e8 91 70 7c 02 0f 0b 48 c7 c7
RSP: 0000:ffffc900012b7440 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000122 RCX: d59015c442afb300
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: ffffc900012b7460 R08: ffffffff815d5d75 R09: 1ffff92000256e24
R10: fffff52000256e25 R11: fffff52000256e25 R12: dffffc0000000000
R13: 1ffff11021f363b0 R14: dead000000000100 R15: ffff88810f9b1e08
FS:  00007f4845dff6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f993b177978 CR3: 00000001176f2000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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+0xac/0x240 net/9p/trans_fd.c:737
 p9_client_flush+0x3ba/0x530 net/9p/client.c:615
 p9_client_rpc+0x840/0xb30 net/9p/client.c:738
 p9_client_create+0x9d2/0x1180 net/9p/client.c:1031
 v9fs_session_init+0x1f6/0x1b10 fs/9p/v9fs.c:410
 v9fs_mount+0xd4/0xb70 fs/9p/vfs_super.c:123
 legacy_get_tree+0xf2/0x190 fs/fs_context.c:662
 vfs_get_tree+0x8c/0x2a0 fs/super.c:1771
 do_new_mount+0x28f/0xad0 fs/namespace.c:3337
 path_mount+0x67b/0x1000 fs/namespace.c:3664
 do_mount fs/namespace.c:3677 [inline]
 __do_sys_mount fs/namespace.c:3886 [inline]
 __se_sys_mount+0x2c8/0x3b0 fs/namespace.c:3863
 __x64_sys_mount+0xc3/0xe0 fs/namespace.c:3863
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x44/0xe0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f484627cae9
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:00007f4845dff0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f484639c120 RCX: 00007f484627cae9
RDX: 00000000200001c0 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f48462c847a R08: 0000000020000300 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f484639c120 R15: 00007ffe14e1fb38
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0xee/0x130 lib/list_debug.c:56
Code: 4c 89 fe e8 c4 70 7c 02 0f 0b 48 c7 c7 40 48 a9 85 4c 89 fe e8 b3 70 7c 02 0f 0b 48 c7 c7 a0 48 a9 85 4c 89 fe e8 a2 70 7c 02 <0f> 0b 48 c7 c7 00 49 a9 85 4c 89 fe e8 91 70 7c 02 0f 0b 48 c7 c7
RSP: 0000:ffffc900012b7440 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000122 RCX: d59015c442afb300
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: ffffc900012b7460 R08: ffffffff815d5d75 R09: 1ffff92000256e24
R10: fffff52000256e25 R11: fffff52000256e25 R12: dffffc0000000000
R13: 1ffff11021f363b0 R14: dead000000000100 R15: ffff88810f9b1e08
FS:  00007f4845dff6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f993b177978 CR3: 00000001176f2000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400