UFS bad inode, mangled entry on Alder Lake-N(100)

[Ian FREISLICH]

I recently bought one of those mini-pc firewall devices (Topton 12th gen N100 with 4x I226-V, 2x X520) and couldn't get it to install pkg or buildkernel without getting a slew of these messages, inode number changing and a panic shortly thereafter.

kernel: /: bad dir ino 4567815 at offset 0: mangled entry

I tried the FreeBSD-15.0-CURRENT-amd64-20250124 snapshot and 14.2-RELEASE, both with and without journal, trim and softupdates in every permitted permutation without success. The system has an NVME, but I experience the same problem with the install on a microsd and different known good NVME drive. Each time I had to reinstall because the filesystem was so corrupted it wouldn't boot after a fsck.

The system is now running fine with ZFS so I'm wondering if it's silently corrupting the ZFS or if there's a bug in UFS2 that's tickled by this CPU. I'll provide any debugging required.

Ian