[Bug 282596] Kernel panics with www/lin ux-widevine-cdm and sysutils/htop: condition vp->v_type == VDIR || VN_IS_DOOMED(vp) not me t … vfs_cache.c:3472 (vn_fullpath_dir)

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=282596

--- Comment #13 from Graham Perrin <grahamperrin@gmail.com> ---
Created attachment 270691
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=270691&action=edit
Screenshot: a kernel panic

(In reply to Gleb Popov from comment #6)

> Is this still a problem?

Yes, reproducible in QEMU (Virtual Machine Manager, Kubuntu 25.10 host, UEFI,
Virtio video). I used the desktop script at
<https://gitlab.com/alfix/kde-installer-dialogs/> to configure FreeBSD.

With the video at <https://bitmovin.com/demos/drm> playing and audible: an
attempt to run htop immediately triggers a panic. Buzzing is audible until the
system restarts itself.

Dump header from device: /dev/vtbd0p2
  Architecture: amd64
  Architecture Version: 2
  Dump Length: 311283712
  Blocksize: 512
  Compression: none
  Dumptime: 2026-05-13 13:41:20 +0100
  Hostname: freebsd-16-amd64-qemu
  Magic: FreeBSD Kernel Dump
  Version String: FreeBSD 16.0-CURRENT main-n285786-0f6c880fcecd GENERIC
  Panic String: condition vp->v_type == VDIR || VN_IS_DOOMED(vp) not met at
/home/pkgbuild/worktrees/main/sys/kern/vfs_cache.c:3547 (vn_fullpath_dir)
  Dump Parity: 424939106
  Bounds: 1
  Dump Status: good

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