list_del corruption. prev->next should be ffff88811183cd50, but was ffff888111ab8e60
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:61!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 1062 Comm: syz-executor Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59
Code: 48 89 de e8 f6 bd 56 02 0f 0b 48 c7 c7 40 a4 63 85 48 89 de e8 e5 bd 56 02 0f 0b 48 c7 c7 a0 a4 63 85 48 89 de e8 d4 bd 56 02 <0f> 0b 48 c7 c7 00 a5 63 85 48 89 de e8 c3 bd 56 02 0f 0b 00 55 48
RSP: 0018:ffffc90000fe7ab8 EFLAGS: 00010246
RAX: 0000000000000054 RBX: ffff88811183cd50 RCX: 11e0d3d41c79ac00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90000fe7ad8 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520001fceb8 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888111ab8e60 R15: ffff88810d095b40
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd778a6d70 CR3: 000000012a038000 CR4: 00000000003506b0
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
 __do_sys_exit_group kernel/exit.c:1014 [inline]
 __se_sys_exit_group kernel/exit.c:1012 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1012
 x64_sys_call+0x832/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fd955434819
Code: Unable to access opcode bytes at RIP 0x7fd9554347ef.
RSP: 002b:00007ffed7aa1db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fd9554ca0a8 RCX: 00007fd955434819
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000009 R08: 0000000000000000 R09: 00007fd9554ca048
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffed7aa3070
R13: 00007fd9554ca048 R14: 000055558c6b04e8 R15: 00007ffed7aa4140
 </TASK>
Modules linked in:
---[ end trace af2c5c78596f0e56 ]---
RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59
Code: 48 89 de e8 f6 bd 56 02 0f 0b 48 c7 c7 40 a4 63 85 48 89 de e8 e5 bd 56 02 0f 0b 48 c7 c7 a0 a4 63 85 48 89 de e8 d4 bd 56 02 <0f> 0b 48 c7 c7 00 a5 63 85 48 89 de e8 c3 bd 56 02 0f 0b 00 55 48
RSP: 0018:ffffc90000fe7ab8 EFLAGS: 00010246

RAX: 0000000000000054 RBX: ffff88811183cd50 RCX: 11e0d3d41c79ac00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90000fe7ad8 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520001fceb8 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff888111ab8e60 R15: ffff88810d095b40
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd778a6d70 CR3: 000000012a038000 CR4: 00000000003506b0