Baseline kernel (RUN 1 canary + RUN 2 crash):
  DragonFly dfbsd 6.5-DEVELOPMENT #0: Sat Oct  3 07:28:45 UTC 2026
      root@dfbsd:/usr/obj/usr/src/sys/X86_64_NOINV  x86_64
  = sys/config/X86_64_GENERIC (INVARIANTS kernel config of the audit guest)
    with "options INVARIANTS" commented out and ident X86_64_NOINV,
    built on the guest with: make -j6 nativekernel KERNCONF=X86_64_NOINV
  Stock GENERIC (production) also ships WITHOUT INVARIANTS:
    sys/config/GENERIC has no INVARIANTS line (only X86_64_GENERIC does).

DF-5352 production-kernel panic run used the second identical build:
  DragonFly dfbsd 6.5-DEVELOPMENT #0: Sat Oct  3 08:13:01 UTC 2026 ... X86_64_NOINV

Fix-validation kernel:
  DragonFly dfbsd 6.5-DEVELOPMENT #1: Sat Oct  3 08:38:15 UTC 2026 ... X86_64_NOINV
  (same + fix1.diff + fix2.diff applied to ioapic_abi.c, incremental rebuild)

Guest: QEMU/KVM, 6 vCPUs, 4GB, virtio-blk/net, ioapic + local apic enabled,
hw.ncpu=6.  qemu cmdline from dfbsd-qemu/vm.sh.