list_del corruption. prev->next should be ffff88812ba27b30, but was ffff88811c03dc50
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:61!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 5466 Comm: syz-executor Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2025
RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59
Code: 48 89 de e8 36 ce 31 02 0f 0b 48 c7 c7 80 21 20 85 48 89 de e8 25 ce 31 02 0f 0b 48 c7 c7 e0 21 20 85 48 89 de e8 14 ce 31 02 <0f> 0b 48 c7 c7 40 22 20 85 48 89 de e8 03 ce 31 02 0f 0b 00 55 48
RSP: 0018:ffffc90000f07af8 EFLAGS: 00010246
RAX: 0000000000000054 RBX: ffff88812ba27b30 RCX: 60ec85009e94ff00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90000f07b18 R08: dffffc0000000000 R09: ffffed103ee0a5f8
R10: ffffed103ee0a5f8 R11: 1ffff1103ee0a5f7 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88811c03dc50 R15: ffff88812ba273c0
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff44186d38 CR3: 000000011ec4c000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_del_entry include/linux/list.h:132 [inline]
 dentry_unlist fs/dcache.c:526 [inline]
 __dentry_kill+0x24c/0x650 fs/dcache.c:579
 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1
 dput+0x42/0x80 fs/dcache.c:883
 incfs_free_mount_info+0x60/0x200 fs/incfs/data_mgmt.c:166
 incfs_kill_sb+0x1aa/0x210 fs/incfs/vfs.c:1979
 deactivate_locked_super+0xa0/0x100 fs/super.c:335
 deactivate_super+0xaf/0xe0 fs/super.c:366
 cleanup_mnt+0x446/0x500 fs/namespace.c:1114
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1121
 task_work_run+0x127/0x190 kernel/task_work.c:189
 exit_task_work include/linux/task_work.h:33 [inline]
 do_exit+0xa4f/0x2480 kernel/exit.c:872
 do_group_exit+0x141/0x310 kernel/exit.c:986
 __do_sys_exit_group kernel/exit.c:997 [inline]
 __se_sys_exit_group kernel/exit.c:995 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:995
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fde8e254be9
Code: Unable to access opcode bytes at RIP 0x7fde8e254bbf.
RSP: 002b:00007ffcb3815488 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fde8e2d7c77 RCX: 00007fde8e254be9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000016 R08: 00007ffcb3813226 R09: 00007ffcb3816740
R10: 000000000000000a R11: 0000000000000246 R12: 00007ffcb3816740
R13: 00007fde8e2d7c05 R14: 000055558946d4a8 R15: 00007ffcb3818900
Modules linked in:
---[ end trace 840a4f9ccb9473a4 ]---
RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59
Code: 48 89 de e8 36 ce 31 02 0f 0b 48 c7 c7 80 21 20 85 48 89 de e8 25 ce 31 02 0f 0b 48 c7 c7 e0 21 20 85 48 89 de e8 14 ce 31 02 <0f> 0b 48 c7 c7 40 22 20 85 48 89 de e8 03 ce 31 02 0f 0b 00 55 48
RSP: 0018:ffffc90000f07af8 EFLAGS: 00010246
RAX: 0000000000000054 RBX: ffff88812ba27b30 RCX: 60ec85009e94ff00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90000f07b18 R08: dffffc0000000000 R09: ffffed103ee0a5f8
R10: ffffed103ee0a5f8 R11: 1ffff1103ee0a5f7 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88811c03dc50 R15: ffff88812ba273c0
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff44186d38 CR3: 000000011ec4c000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400