⬢ DragonFlyBSD Kernel Audit
DF-4047 / manifest.json
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{
  "finding_id": "DF-4047",
  "title": "NULL command_table_helper callbacks called via BIOS-controlled command revisions on DCE10/11/11.2 (assign_control_parameter / transmitter_bp_to_atom / clock_source_id_to_ref_clk_src) + uninit crev steering",
  "verdict": "inconclusive",
  "impact": "panic",
  "reproduce": {
    "build": "cc -O2 -Wall -o null_helper_dispatch null_helper_dispatch.c",
    "run": "./null_helper_dispatch",
    "expected": "crafted-revision rows print the exact NULL helper the kernel would call (assign_control_parameter / transmitter_bp_to_atom / clock_source_id_to_ref_clk_src); honest-DCE11 and DCE8.0 rows print 'safe'"
  },
  "kernel_refs": [
    "sys/dev/drm/amd/display/dc/bios/command_table.c:204",
    "sys/dev/drm/amd/display/dc/bios/command_table.c:219",
    "sys/dev/drm/amd/display/dc/bios/command_table.c:367",
    "sys/dev/drm/amd/display/dc/bios/command_table.c:507",
    "sys/dev/drm/amd/display/dc/bios/command_table.c:678",
    "sys/dev/drm/amd/display/dc/bios/dce110/command_table_helper_dce110.c",
    "sys/dev/drm/amd/display/dc/bios/dce112/command_table_helper_dce112.c",
    "sys/dev/drm/amd/amdgpu/atom.c:1405",
    "sys/dev/drm/amd/display/dc/bios/bios_parser_interface.c:35"
  ],
  "artifacts": [
    "README.md",
    "VERDICT.md",
    "null_helper_dispatch.c",
    "build.log",
    "run.log",
    "env.txt",
    "fix.diff",
    "manifest.json",
    "verdict.json"
  ]
}