list_del corruption, ffff88811f6d39d8->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: 1031 Comm: syz-executor.0 Not tainted 5.15.148-syzkaller-1069047-g993bed180178 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:__list_del_entry_valid+0xea/0x120 lib/list_debug.c:53
Code: 4c 89 f6 e8 cd fe 58 02 0f 0b 48 c7 c7 60 00 83 85 4c 89 f6 e8 bc fe 58 02 0f 0b 48 c7 c7 c0 00 83 85 4c 89 f6 e8 ab fe 58 02 <0f> 0b 48 c7 c7 20 01 83 85 4c 89 f6 e8 9a fe 58 02 0f 0b 48 c7 c7
RSP: 0018:ffffc90002df7440 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000100 RCX: baa08e3a6c058600
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: ffffc90002df7460 R08: ffffffff81575f25 R09: ffffed103ee265e8
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff11023eda72c R14: ffff88811f6d39d8 R15: dead000000000122
FS:  00007f8bc24836c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8820a7e1f8 CR3: 000000011fd8d000 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: 0033:0x7f8bc2942da9
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:00007f8bc24830c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f8bc2a72120 RCX: 00007f8bc2942da9
RDX: 00000000200001c0 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f8bc298f47a R08: 0000000020000300 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f8bc2a72120 R15: 00007ffc4aa378c8
 </TASK>
Modules linked in:
---[ end trace f8857d4291cd21b7 ]---
RIP: 0010:__list_del_entry_valid+0xea/0x120 lib/list_debug.c:53
Code: 4c 89 f6 e8 cd fe 58 02 0f 0b 48 c7 c7 60 00 83 85 4c 89 f6 e8 bc fe 58 02 0f 0b 48 c7 c7 c0 00 83 85 4c 89 f6 e8 ab fe 58 02 <0f> 0b 48 c7 c7 20 01 83 85 4c 89 f6 e8 9a fe 58 02 0f 0b 48 c7 c7
RSP: 0018:ffffc90002df7440 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000100 RCX: baa08e3a6c058600
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: ffffc90002df7460 R08: ffffffff81575f25 R09: ffffed103ee265e8
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff11023eda72c R14: ffff88811f6d39d8 R15: dead000000000122
FS:  00007f8bc24836c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8820a7e1f8 CR3: 000000011fd8d000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400