DragonFly dfbsd 6.5-DEVELOPMENT #0: Thu Jul  2 06:02:54 UTC 2026  root@dfbsd:/usr/obj/usr/src/sys/X86_64_GENERIC  x86_64
QEMU/KVM, 6.5-DEVELOPMENT X86_64_GENERIC kernel (snapshot with-src, 2026-07-02)
USB rig: qemu-xhci (usbus0, root hub only; downstream devices failed enum ->
exercised usb_alloc_device error path) + usb-ehci (usbus1) with usb-storage
(ugen1.2, QEMU USB MSD) and usb-tablet (ugen1.3).
cc: DragonFly cc (GCC 5.4.1-based)