Guest environment (single-tenant DF audit QEMU/KVM guest) uname -a: DragonFly dfbsd 6.5-DEVELOPMENT DragonFly 6.5-DEVELOPMENT #0: Thu Jul 2 06:02:54 UTC 2026 root@dfbsd:/usr/obj/usr/src/sys/X86_64_GENERIC x86_64 kernel config: X86_64_GENERIC (has `options INVARIANTS`, sys/config/X86_64_GENERIC:56 -> KKASSERT panics) compiler: cc 8.3 [DragonFly] Release/2019-02-22 PCI devices: hostb0@pci0:0:0:0 class=0x060000 isab1@pci0:0:1:0 class=0x060100 atapci0@pci0:0:1:1 class=0x010180 Intel PIIX3 WDMA2 (IDE, not AHCI) none0@pci0:0:1:3 class=0x068000 vgapci0@pci0:0:2:0 class=0x030000 virtio_pci0@pci0:0:3:0 class=0x020000 (vtnet0) virtio_pci1@pci0:0:4:0 class=0x010000 (vtblk0) => NO SATA/AHCI controller (class 0x010601) present; ahci.ko exists in /boot/kernel but has no hardware to attach to. QEMU additionally does not emulate SATA port multipliers (or PM FBS), so ahci_pm.c runtime paths cannot be exercised on this guest. CAM: scbus0/scbus1 from ata(4); camcontrol devlist shows the QEMU DVD-ROM. Storage root: hammer2 on /dev/vbd0s1d (virtio).