list_del corruption. prev->next should be ffff88811dccbf50, but was ffffc90000db7b80. (prev=ffffc90000db7b80)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:61!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 16454 Comm: syz-executor.0 Not tainted 6.1.25-syzkaller-00253-gbfbebce3f712 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
RIP: 0010:__list_del_entry_valid+0x10f/0x130 lib/list_debug.c:59
Code: e8 fa 09 8e 02 0f 0b 48 c7 c7 e0 fd c8 85 4c 89 fe e8 e9 09 8e 02 0f 0b 48 c7 c7 40 fe c8 85 4c 89 fe 48 89 d9 e8 d5 09 8e 02 <0f> 0b 48 c7 c7 c0 fe c8 85 4c 89 fe 4c 89 f1 e8 c1 09 8e 02 0f 0b
RSP: 0018:ffffc900020bf740 EFLAGS: 00010246
RAX: 000000000000006d RBX: ffffc90000db7b80 RCX: 2c04bb6e6fdf0e00
RDX: ffffc900042af000 RSI: 000000000000be98 RDI: 000000000000be99
RBP: ffffc900020bf760 R08: ffffffff815967d5 R09: fffff52000417e85
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff11023b997db R14: ffffc90000db7b80 R15: ffff88811dccbf50
FS:  00007f67251de700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556a67728 CR3: 0000000162406000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000006800 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_del_entry include/linux/list.h:134 [inline]
 list_del include/linux/list.h:148 [inline]
 p9_fd_cancelled+0xa5/0x230 net/9p/trans_fd.c:734
 p9_client_flush+0x3b6/0x530 net/9p/client.c:610
 p9_client_rpc+0x802/0xaa0 net/9p/client.c:730
 p9_client_stat+0x10e/0x390 net/9p/client.c:1677
 v9fs_mount+0x71d/0xb60 fs/9p/vfs_super.c:172
 legacy_get_tree+0xee/0x190 fs/fs_context.c:610
 vfs_get_tree+0x88/0x290 fs/super.c:1555
 do_new_mount+0x28b/0xac0 fs/namespace.c:3040
 path_mount+0x671/0x1070 fs/namespace.c:3370
 do_mount fs/namespace.c:3383 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]
 __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3568
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3568
 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+0x63/0xcd
RIP: 0033:0x7f6725e8c169
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:00007f67251de168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6725fac050 RCX: 00007f6725e8c169
RDX: 0000000020000b80 RSI: 0000000020000140 RDI: 0000000000000000
RBP: 00007f6725ee7ca1 R08: 0000000020000600 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc03764caf R14: 00007f67251de300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid+0x10f/0x130 lib/list_debug.c:59
Code: e8 fa 09 8e 02 0f 0b 48 c7 c7 e0 fd c8 85 4c 89 fe e8 e9 09 8e 02 0f 0b 48 c7 c7 40 fe c8 85 4c 89 fe 48 89 d9 e8 d5 09 8e 02 <0f> 0b 48 c7 c7 c0 fe c8 85 4c 89 fe 4c 89 f1 e8 c1 09 8e 02 0f 0b
RSP: 0018:ffffc900020bf740 EFLAGS: 00010246
RAX: 000000000000006d RBX: ffffc90000db7b80 RCX: 2c04bb6e6fdf0e00
RDX: ffffc900042af000 RSI: 000000000000be98 RDI: 000000000000be99
RBP: ffffc900020bf760 R08: ffffffff815967d5 R09: fffff52000417e85
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff11023b997db R14: ffffc90000db7b80 R15: ffff88811dccbf50
FS:  00007f67251de700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556a67728 CR3: 0000000162406000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000006800 DR6: 00000000ffff0ff0 DR7: 0000000000000400