list_del corruption, ffff888113aa5cf8->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: 19687 Comm: syz-executor.3 Not tainted 5.15.148-syzkaller-00704-g3802b45594e1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:__list_del_entry_valid+0xea/0x120 lib/list_debug.c:53
Code: 4c 89 f6 e8 ed cf 58 02 0f 0b 48 c7 c7 a0 fd 82 85 4c 89 f6 e8 dc cf 58 02 0f 0b 48 c7 c7 00 fe 82 85 4c 89 f6 e8 cb cf 58 02 <0f> 0b 48 c7 c7 60 fe 82 85 4c 89 f6 e8 ba cf 58 02 0f 0b 48 c7 c7
RSP: 0000:ffffc9000197f440 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000100 RCX: 4cc4fa41d32f2900
RDX: ffffc900032ed000 RSI: 00000000000009a5 RDI: 00000000000009a6
RBP: ffffc9000197f460 R08: ffffffff81574d75 R09: 0000000000000003
R10: fffff5200032fde4 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff11022754b90 R14: ffff888113aa5cf8 R15: dead000000000122
FS:  00007f0f49d0c6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000203d4030 CR3: 00000001ce3d5000 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+0xa5/0x230 net/9p/trans_fd.c:736
 p9_client_flush+0x392/0x570 net/9p/client.c:679
 p9_client_rpc+0xaf0/0x13a0 net/9p/client.c:786
 p9_client_create+0x9be/0x1130 net/9p/client.c:1054
 v9fs_session_init+0x1fa/0x19b0 fs/9p/v9fs.c:409
 v9fs_mount+0x75/0x7f0 fs/9p/vfs_super.c:126
 legacy_get_tree+0xf1/0x190 fs/fs_context.c:611
 vfs_get_tree+0x88/0x290 fs/super.c:1517
 do_new_mount+0x2ba/0xb30 fs/namespace.c:3005
 path_mount+0x671/0x1070 fs/namespace.c:3335
 do_mount fs/namespace.c:3348 [inline]
 __do_sys_mount fs/namespace.c:3556 [inline]
 __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3533
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3533
 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: 0033:0x7f0f4afabda9
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:00007f0f49d0c0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f0f4b0da050 RCX: 00007f0f4afabda9
RDX: 0000000020000280 RSI: 00000000200002c0 RDI: 0000000000000000
RBP: 00007f0f4aff847a R08: 0000000020000340 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f0f4b0da050 R15: 00007ffe20107518
 </TASK>
Modules linked in:
---[ end trace a418097f30210e1e ]---
RIP: 0010:__list_del_entry_valid+0xea/0x120 lib/list_debug.c:53
Code: 4c 89 f6 e8 ed cf 58 02 0f 0b 48 c7 c7 a0 fd 82 85 4c 89 f6 e8 dc cf 58 02 0f 0b 48 c7 c7 00 fe 82 85 4c 89 f6 e8 cb cf 58 02 <0f> 0b 48 c7 c7 60 fe 82 85 4c 89 f6 e8 ba cf 58 02 0f 0b 48 c7 c7
RSP: 0000:ffffc9000197f440 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000100 RCX: 4cc4fa41d32f2900
RDX: ffffc900032ed000 RSI: 00000000000009a5 RDI: 00000000000009a6
RBP: ffffc9000197f460 R08: ffffffff81574d75 R09: 0000000000000003
R10: fffff5200032fde4 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff11022754b90 R14: ffff888113aa5cf8 R15: dead000000000122
FS:  00007f0f49d0c6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000203d4030 CR3: 00000001ce3d5000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400