list_del corruption. prev->next should be ffff8881118f55e0, but was ffff8881119381a0
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:61!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 1282 Comm: syz.5.211 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59
Code: 48 89 de e8 d6 cc 56 02 0f 0b 48 c7 c7 00 8c 63 85 48 89 de e8 c5 cc 56 02 0f 0b 48 c7 c7 60 8c 63 85 48 89 de e8 b4 cc 56 02 <0f> 0b 48 c7 c7 c0 8c 63 85 48 89 de e8 a3 cc 56 02 0f 0b 00 55 48
RSP: 0018:ffffc90000ba7b38 EFLAGS: 00010246
RAX: 0000000000000054 RBX: ffff8881118f55e0 RCX: 069697f35cb5a600
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90000ba7b58 R08: ffff8881f7132f3f R09: 1ffff1103ee265e7
R10: dffffc0000000000 R11: ffffed103ee265e8 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff8881119381a0 R15: ffff88810d2a21b0
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f664f005000 CR3: 000000013d139000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_del_entry include/linux/list.h:132 [inline]
 dentry_unlist fs/dcache.c:529 [inline]
 __dentry_kill+0x248/0x660 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+0x1af/0x210 fs/incfs/vfs.c:1997
 deactivate_locked_super+0xa0/0x100 fs/super.c:335
 deactivate_super+0xaf/0xe0 fs/super.c:366
 cleanup_mnt+0x44f/0x500 fs/namespace.c:1149
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1156
 task_work_run+0x127/0x190 kernel/task_work.c:188
 exit_task_work include/linux/task_work.h:33 [inline]
 do_exit+0xb70/0x29a0 kernel/exit.c:890
 __do_sys_exit kernel/exit.c:973 [inline]
 __se_sys_exit kernel/exit.c:971 [inline]
 __x64_sys_exit+0x40/0x40 kernel/exit.c:971
 x64_sys_call+0x44/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:61
 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: 0033:0x7fa6c2221159
Code: Unable to access opcode bytes at RIP 0x7fa6c222112f.
RSP: 002b:00007fa6b87f5fd8 EFLAGS: 00000246 ORIG_RAX: 000000000000003c
RAX: ffffffffffffffda RBX: 00007fa6c24a9360 RCX: 00007fa6c2221159
RDX: 00007fa6b87f69c8 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fa6c22b8024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa6c24a93f8 R14: 00007fa6c24a9360 R15: 00007ffdb3188cd8
 </TASK>
Modules linked in:
---[ end trace 1debe9b8aa472a10 ]---
RIP: 0010:__list_del_entry_valid+0x10c/0x120 lib/list_debug.c:59
Code: 48 89 de e8 d6 cc 56 02 0f 0b 48 c7 c7 00 8c 63 85 48 89 de e8 c5 cc 56 02 0f 0b 48 c7 c7 60 8c 63 85 48 89 de e8 b4 cc 56 02 <0f> 0b 48 c7 c7 c0 8c 63 85 48 89 de e8 a3 cc 56 02 0f 0b 00 55 48
RSP: 0018:ffffc90000ba7b38 EFLAGS: 00010246
RAX: 0000000000000054 RBX: ffff8881118f55e0 RCX: 069697f35cb5a600
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90000ba7b58 R08: ffff8881f7132f3f R09: 1ffff1103ee265e7
R10: dffffc0000000000 R11: ffffed103ee265e8 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff8881119381a0 R15: ffff88810d2a21b0
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f664f005000 CR3: 000000013d139000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400