list_del corruption, ffff888131161910->next is LIST_POISON1 (dead000000000100)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:55!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 10342 Comm: syz-executor.3 Not tainted 5.15.81-syzkaller-01226-gd753150bdc01 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:__list_del_entry_valid+0xf4/0x130 lib/list_debug.c:53
Code: 4d dd 5c 02 0f 0b 48 c7 c7 40 b8 87 85 4c 89 f6 31 c0 e8 3a dd 5c 02 0f 0b 48 c7 c7 a0 b8 87 85 4c 89 f6 31 c0 e8 27 dd 5c 02 <0f> 0b 48 c7 c7 00 b9 87 85 4c 89 f6 31 c0 e8 14 dd 5c 02 0f 0b 48
RSP: 0018:ffffc90000a773c0 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000100 RCX: 25175ee74af2ca00
RDX: ffffc90006182000 RSI: 0000000000000982 RDI: 0000000000000983
RBP: ffffc90000a773e0 R08: ffffffff815947d9 R09: fffff5200014edb1
R10: fffff5200014edb1 R11: 1ffff9200014edb0 R12: dffffc0000000000
R13: 1ffff1102622c313 R14: ffff888131161910 R15: dead000000000122
FS:  00007f4c26909700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020018030 CR3: 0000000138456000 CR4: 00000000003506a0
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+0xa4/0x230 net/9p/trans_fd.c:736
 p9_client_flush+0x37b/0x570 net/9p/client.c:672
 p9_client_rpc+0x81a/0xa60 net/9p/client.c:779
 p9_client_version+0x179/0x680
 p9_client_create+0x8f5/0xbb0 net/9p/client.c:1047
 v9fs_session_init+0x1ef/0x17c0 fs/9p/v9fs.c:409
 v9fs_mount+0x75/0x7e0 fs/9p/vfs_super.c:126
 legacy_get_tree+0xf0/0x190 fs/fs_context.c:610
 vfs_get_tree+0x88/0x290 fs/super.c:1499
 do_new_mount+0x289/0xad0 fs/namespace.c:2994
 path_mount+0x60b/0x1050 fs/namespace.c:3324
 do_mount fs/namespace.c:3337 [inline]
 __do_sys_mount fs/namespace.c:3545 [inline]
 __se_sys_mount+0x2d2/0x3c0 fs/namespace.c:3522
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3522
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f4c27bd80c9
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:00007f4c26909168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f4c27cf8120 RCX: 00007f4c27bd80c9
RDX: 0000000020000040 RSI: 0000000020000180 RDI: 0000000000000000
RBP: 00007f4c27c33ae9 R08: 0000000020000300 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe4008478f R14: 00007f4c26909300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 2a359036909589b9 ]---
RIP: 0010:__list_del_entry_valid+0xf4/0x130 lib/list_debug.c:53
Code: 4d dd 5c 02 0f 0b 48 c7 c7 40 b8 87 85 4c 89 f6 31 c0 e8 3a dd 5c 02 0f 0b 48 c7 c7 a0 b8 87 85 4c 89 f6 31 c0 e8 27 dd 5c 02 <0f> 0b 48 c7 c7 00 b9 87 85 4c 89 f6 31 c0 e8 14 dd 5c 02 0f 0b 48
RSP: 0018:ffffc90000a773c0 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000100 RCX: 25175ee74af2ca00
RDX: ffffc90006182000 RSI: 0000000000000982 RDI: 0000000000000983
RBP: ffffc90000a773e0 R08: ffffffff815947d9 R09: fffff5200014edb1
R10: fffff5200014edb1 R11: 1ffff9200014edb0 R12: dffffc0000000000
R13: 1ffff1102622c313 R14: ffff888131161910 R15: dead000000000122
FS:  00007f4c26909700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020018030 CR3: 0000000138456000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400