{
  "finding_id": "DF-4293",
  "verdict": "inconclusive",
  "impact": "none",
  "confidence": "certain",
  "reproduce": {
    "build": "guest: cc -O -pthread -o /tmp/mixbattery /tmp/mixbattery.c (and mixbattery2.c)",
    "run": "guest as uid 1001: /tmp/mixbattery && /tmp/mixbattery2 (mixer0+dsp0 live via QEMU -device ES1370 + kldload snd_es137x)",
    "expected": "negative-space battery: clean errno classes (0/ENXIO/EINVAL), guest stays up, no panic; the filed defect (reinit/hwvol NULL guards) needs a mixer-less pcm device + resume event, not triggerable on this guest"
  },
  "kernel_refs": [
    "sys/dev/sound/pcm/mixer.c:828",
    "sys/dev/sound/pcm/mixer.c:881",
    "sys/dev/sound/pcm/mixer.c:915",
    "sys/dev/sound/pcm/mixer.c:955",
    "sys/dev/sound/pcm/mixer.c:117",
    "sys/dev/sound/pcm/mixer.c:776",
    "sys/dev/sound/pci/hda/hdaa.c:6576"
  ],
  "artifacts": ["README.md", "VERDICT.md", "mixbattery.c", "mixbattery2.c", "build.sh", "run.sh", "build.log", "run.log", "run.2.log", "env.txt", "fix.diff", "manifest.json", "verdict.json"]
}