list_del corruption. prev->next should be ffff88811034e1a0, but was ffff8881102f6090
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:61!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 276 Comm: syz-executor Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59
Code: 48 89 de e8 a6 a2 38 02 0f 0b 48 c7 c7 60 86 40 85 48 89 de e8 95 a2 38 02 0f 0b 48 c7 c7 c0 86 40 85 48 89 de e8 84 a2 38 02 <0f> 0b 48 c7 c7 20 87 40 85 48 89 de e8 73 a2 38 02 0f 0b 00 55 48
RSP: 0018:ffffc90000b77c60 EFLAGS: 00010246
RAX: 0000000000000054 RBX: ffff88811034e1a0 RCX: 8eeaf27463667700
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90000b77c80 R08: ffff8881f7152fbf R09: 1ffff1103ee2a5f7
R10: dffffc0000000000 R11: ffffed103ee2a5f8 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff8881102f6090 R15: ffff88811034e800
FS:  00005555666e7500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000bbdffc CR3: 00000001231d7000 CR4: 00000000003506a0
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+0x45b/0x510 fs/namespace.c:1123
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1130
 task_work_run+0x127/0x190 kernel/task_work.c:189
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop+0xcb/0xe0 kernel/entry/common.c:172
 exit_to_user_mode_prepare+0x76/0xa0 kernel/entry/common.c:199
 syscall_exit_to_user_mode+0x1d/0x40 kernel/entry/common.c:274
 do_syscall_64+0x3d/0x40 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f5ad0ec59d7
Code: a2 c7 05 1c fd 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffe8229bc48 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f5ad0ec59d7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe8229bd00
RBP: 00007ffe8229bd00 R08: 00007ffe8229cd00 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffe8229cd90
R13: 00007f5ad0f5a050 R14: 0000000000007f7d R15: 00007ffe8229cdd0
Modules linked in:
---[ end trace e6e7ffddcfd8be7a ]---
RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59
Code: 48 89 de e8 a6 a2 38 02 0f 0b 48 c7 c7 60 86 40 85 48 89 de e8 95 a2 38 02 0f 0b 48 c7 c7 c0 86 40 85 48 89 de e8 84 a2 38 02 <0f> 0b 48 c7 c7 20 87 40 85 48 89 de e8 73 a2 38 02 0f 0b 00 55 48
RSP: 0018:ffffc90000b77c60 EFLAGS: 00010246
RAX: 0000000000000054 RBX: ffff88811034e1a0 RCX: 8eeaf27463667700
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90000b77c80 R08: ffff8881f7152fbf R09: 1ffff1103ee2a5f7
R10: dffffc0000000000 R11: ffffed103ee2a5f8 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff8881102f6090 R15: ffff88811034e800
FS:  00005555666e7500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000bbdffc CR3: 00000001231d7000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400