⬢ DragonFlyBSD Kernel Audit
DF-5672 / manifest.json
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{
  "finding_id": "DF-5672",
  "verdict": "reproduced",
  "impact": "none",
  "confidence": "certain",
  "twin_of": "DF-5671 (sys/platform/vkernel64/platform/ipl_funcs.c)",
  "reproduce": {
    "build": "none — pure objdump/nm inspection of the running guest kernel image",
    "run": "findings/poc/DF-5672/run.sh",
    "expected": "Every setsoft*/schedsofttty/setdelayed shows an UNLOCKED 'orl $bit,0x42cc(%rax)' (gd_spending) or 'orl $0x1,0x42d0(%rax)' (gd_sdelayed), followed by a LOCKED 'lock orl $0x2,0x18(%rax)' (gd_reqflags RQF_INTPEND) — contradicting the comment at ipl_funcs.c:42 ('setbits uses a locked or, making simple cases MP safe'). splz entry shows 'incl 0xd4(%rbx)' (TD_CRITCOUNT self-guard)."
  },
  "kernel_refs": [
    "sys/platform/pc64/x86_64/ipl_funcs.c:37-43",
    "sys/platform/pc64/x86_64/ipl_funcs.c:44-51",
    "sys/cpu/x86_64/include/atomic.h:72-74",
    "sys/cpu/x86_64/include/atomic.h:110-115",
    "sys/platform/pc64/include/globaldata.h:76-77",
    "sys/platform/pc64/x86_64/ipl.s:275",
    "sys/platform/pc64/x86_64/ipl.s:431",
    "sys/kern/lwkt_ipiq.c:308-315"
  ],
  "artifacts": [
    "README.md",
    "VERDICT.md",
    "disasm_live.sh",
    "run.sh",
    "run.log",
    "env.txt",
    "fix.diff",
    "manifest.json",
    "verdict.json"
  ]
}