57b5e43d0e
Five bugs identified and patched in retail Asheron's Call client: - v3b: palette refcount over-increment (3-byte NOP at two sites) - v5: RenderSurface PurgeResource no-op stub (vtable slot 2 thunk) - v11: two dangling-pointer crash guards (NULL-check + reorder) - v14: CEnvCell::Destroy ClipPlaneList leak (18-byte JMP to cleanup thunk) - v22: unpacker stale-pointer SEH guard (whole-function __try/__except) All five ship in leakfix.dll (117 KB, SHA d282f23c…) which is loaded by acclient.exe at process start via PE import table patching by tools/install_leakfix.py. Controlled 15-client fleet soak: unpatched control died at 26h with palette exhaustion; all 14 patched clients survived past that point and reached ≥5-day uptime. Residual ~15 MB/h growth traced to d3d9.dll's internal slab allocator (260KB surface backing buffers retained after Release). See REPORT.md §10 for the full investigation; conclusion is that it's unfixable from outside d3d9. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
50 lines
1.6 KiB
Python
50 lines
1.6 KiB
Python
"""find_vtable_refs.py <dump.dmp> <addr_hex>
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Scan ALL committed memory (not just RW writable) for any DWORD == addr.
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Used to verify whether an alleged vtable address is referenced anywhere
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in the dump's process memory.
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"""
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import os, struct, sys
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from collections import Counter
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from minidump.minidumpfile import MinidumpFile
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def _ei(v):
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if v is None: return 0
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if hasattr(v, 'value'): return int(v.value)
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return int(v)
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md = MinidumpFile.parse(sys.argv[1])
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target = int(sys.argv[2], 16)
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print(f"searching for 0x{target:08x} in dump {sys.argv[1]}")
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reader = md.get_reader().get_buffered_reader()
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# Scan everything committed
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hits = []
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total = 0
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for r in md.memory_info.infos:
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st = _ei(r.State); ty = _ei(r.Type); pr = _ei(r.Protect) & 0xff
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if st != 0x1000: continue # not committed
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if pr == 0x01: continue # no-access
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try:
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reader.move(r.BaseAddress)
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buf = reader.read(r.RegionSize)
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except Exception:
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continue
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if not buf: continue
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total += len(buf)
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end = (len(buf) // 4) * 4
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for off in range(0, end, 4):
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v = struct.unpack_from("<I", buf, off)[0]
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if v == target:
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type_name = {0x20000: "Private", 0x40000: "Mapped", 0x1000000: "Image"}.get(ty, hex(ty))
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hits.append((r.BaseAddress + off, type_name))
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print(f"scanned {total/(1024*1024):.1f} MB")
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print(f"hits: {len(hits)}")
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# Histogram by region type
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hist = Counter(h[1] for h in hits)
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for t, c in hist.most_common():
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print(f" {t}: {c}")
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print("first 15 hits:")
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for addr, t in hits[:15]:
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print(f" 0x{addr:08x} ({t})")
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