list_del corruption. prev->next should be ffff888111a56e60, but was ffff888111a566f0
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:61!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 2254 Comm: syz.2.558 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59
Code: 48 89 de e8 16 70 56 02 0f 0b 48 c7 c7 00 98 63 85 48 89 de e8 05 70 56 02 0f 0b 48 c7 c7 60 98 63 85 48 89 de e8 f4 6f 56 02 <0f> 0b 48 c7 c7 c0 98 63 85 48 89 de e8 e3 6f 56 02 0f 0b 00 55 48
RSP: 0018:ffffc90001167778 EFLAGS: 00010246
RAX: 0000000000000054 RBX: ffff888111a56e60 RCX: 925888cffc393600
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90001167798 R08: ffff8881f7032f3f R09: 1ffff1103ee065e7
R10: dffffc0000000000 R11: ffffed103ee065e8 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888111a566f0 R15: ffff8881004c9b30
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5210083ec0 CR3: 000000010d6cd000 CR4: 00000000003506b0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_del_entry include/linux/list.h:132 [inline]
 dentry_unlist fs/dcache.c:529 [inline]
 __dentry_kill+0x24c/0x650 fs/dcache.c:582
 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1
 dput+0x47/0x90 fs/dcache.c:893
 incfs_free_mount_info+0x60/0x200 fs/incfs/data_mgmt.c:166
 incfs_kill_sb+0x1b8/0x220 fs/incfs/vfs.c:1997
 deactivate_locked_super+0xa0/0x100 fs/super.c:335
 deactivate_super+0xaf/0xe0 fs/super.c:366
 cleanup_mnt+0x45b/0x510 fs/namespace.c:1148
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1155
 task_work_run+0x127/0x190 kernel/task_work.c:188
 exit_task_work include/linux/task_work.h:33 [inline]
 do_exit+0xa9e/0x27e0 kernel/exit.c:889
 do_group_exit+0x141/0x310 kernel/exit.c:1003
 get_signal+0x66a/0x1480 kernel/signal.c:2907
 arch_do_signal_or_restart+0xdf/0x11c0 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0xa7/0xe0 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fda31f8758e
Code: Unable to access opcode bytes at RIP 0x7fda31f87564.
RSP: 002b:00007fda30a01f58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007fda30a026c0 RCX: 00007fda31f8758e
RDX: 00007fda30a01fb0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fda32034bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fda32242128 R14: 00007fda32242090 R15: 00007ffe57d3afe8
 </TASK>
Modules linked in:
---[ end trace d343c7d248e34bab ]---
RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59
Code: 48 89 de e8 16 70 56 02 0f 0b 48 c7 c7 00 98 63 85 48 89 de e8 05 70 56 02 0f 0b 48 c7 c7 60 98 63 85 48 89 de e8 f4 6f 56 02 <0f> 0b 48 c7 c7 c0 98 63 85 48 89 de e8 e3 6f 56 02 0f 0b 00 55 48
RSP: 0018:ffffc90001167778 EFLAGS: 00010246
RAX: 0000000000000054 RBX: ffff888111a56e60 RCX: 925888cffc393600
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90001167798 R08: ffff8881f7032f3f R09: 1ffff1103ee065e7
R10: dffffc0000000000 R11: ffffed103ee065e8 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888111a566f0 R15: ffff8881004c9b30
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5210083ec0 CR3: 000000010d6cd000 CR4: 00000000003506b0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400