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
(fix-validation kernel: #1: Wed Oct 14 16:41:52 UTC 2026, rebuilt after applying fix.diff)
guest: dfbsd-qemu QEMU/KVM, 6 vCPU, no DPT SmartRAID hardware (device emulated by the rig)
kernel image symbols (baseline): dpt_intr T 0xffffffff80439670 (panic site +0x2c2), no KASLR.
Trigger inputs: regpage[2..5]='DPTH', regpage[7]|=HA_SERROR(0x01), sp{EOC=1, in-range ccb_busaddr}.