syzbot

 </TASK>
---[ end trace 359b54edbdf89bb3 ]---
list_del corruption. prev->next should be ffff8881118ca3c0, but was ffff88811186d1a0
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:61!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 8799 Comm: syz-executor 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 80 97 63 85 48 89 de e8 05 70 56 02 0f 0b 48 c7 c7 e0 97 63 85 48 89 de e8 f4 6f 56 02 <0f> 0b 48 c7 c7 40 98 63 85 48 89 de e8 e3 6f 56 02 0f 0b 00 55 48
RSP: 0018:ffffc90002be7c38 EFLAGS: 00010246
RAX: 0000000000000054 RBX: ffff8881118ca3c0 RCX: 0522862ee3645100
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90002be7c58 R08: ffff8881f7132f3f R09: 1ffff1103ee265e7
R10: dffffc0000000000 R11: ffffed103ee265e8 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88811186d1a0 R15: ffff888111968b30
FS:  0000555561278500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000030006ff CR3: 000000013d284000 CR4: 00000000003506a0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: 0000000000000030 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
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0xd0/0xe0 kernel/entry/common.c:181
 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: 0033:0x7efe3adddf17
Code: a2 c7 05 7c 96 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:00007ffff16b7e68 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007efe3adddf17
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffff16b7f20
RBP: 00007ffff16b7f20 R08: 00007ffff16b8f20 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffff16b8fb0
R13: 00007efe3ae4671f R14: 00000000000695c1 R15: 00007ffff16b8ff0
 </TASK>
Modules linked in:
---[ end trace 359b54edbdf89bb4 ]---
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 80 97 63 85 48 89 de e8 05 70 56 02 0f 0b 48 c7 c7 e0 97 63 85 48 89 de e8 f4 6f 56 02 <0f> 0b 48 c7 c7 40 98 63 85 48 89 de e8 e3 6f 56 02 0f 0b 00 55 48
RSP: 0018:ffffc90002be7c38 EFLAGS: 00010246
RAX: 0000000000000054 RBX: ffff8881118ca3c0 RCX: 0522862ee3645100
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90002be7c58 R08: ffff8881f7132f3f R09: 1ffff1103ee265e7
R10: dffffc0000000000 R11: ffffed103ee265e8 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88811186d1a0 R15: ffff888111968b30
FS:  0000555561278500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000030006ff CR3: 000000013d284000 CR4: 00000000003526a0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: 0000000000000030 DR6: 00000000ffff0ff0 DR7: 0000000000000400