⬢ DragonFlyBSD Kernel Audit
DF-2834 / manifest.json
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{
  "finding_id": "DF-2834",
  "verdict": "reproduced",
  "impact": "dos",
  "confidence": "certain",
  "reproduce": {
    "build": "scp -F dfbsd-qemu/config findings/poc/DF-2834/vmsp_grow.c findings/poc/DF-2834/vmsp_cap.c dfbsd:/tmp/ && dfbsd-qemu/vm.sh run_root 'cc -O2 -Wall -o /tmp/vmsp_grow /tmp/vmsp_grow.c && cc -O2 -Wall -o /tmp/vmsp_cap /tmp/vmsp_cap.c'",
    "run": "dfbsd-qemu/vm.sh run_root \"$(cat findings/poc/DF-2834/run.sh)\"",
    "expected": "stock kernel: DONE created=120000, wire grows linearly at ~2.37 pages per create (9.7KB unswappable) plus ~9.75KB KVA per create, zero failures, grow_exit=0; fixed kernel: FAILED iter=64 rc=-1 errno=59 (ETOOMANYREFS) and wire stays at baseline"
  },
  "kernel_refs": [
    "sys/vm/vm_vmspace.c:146",
    "sys/vm/vm_vmspace.c:155",
    "sys/vm/vm_vmspace.c:182",
    "sys/vm/vm_vmspace.c:183",
    "sys/vm/vm_vmspace.c:187",
    "sys/vm/vm_vmspace.c:189-198",
    "sys/vm/vm_map.c:233",
    "sys/vm/vm_map.c:309-340",
    "sys/platform/pc64/x86_64/pmap.c:2347",
    "sys/platform/pc64/x86_64/pmap.c:2368-2370",
    "sys/platform/pc64/x86_64/pmap.c:2376-2380",
    "sys/platform/pc64/x86_64/pmap.c:2509-2512",
    "sys/platform/pc64/x86_64/pmap.c:2751-2757"
  ],
  "artifacts": [
    "README.md", "VERDICT.md", "vmsp_grow.c", "vmsp_cap.c",
    "build.sh", "run.sh", "build.log", "run.log", "run.fixed.log",
    "env.txt", "fix.diff", "manifest.json", "verdict.json"
  ]
}