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>
98 lines
3.3 KiB
Python
98 lines
3.3 KiB
Python
"""probe_rtd3d_total.py <pid>
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Full memory scan for RTD3D GR-view vtable 0x00801A18. Compare to s_Resources
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count to detect orphan shells (instances still in memory but not in s_Resources).
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Run as Admin (PROCESS_VM_READ on AC client).
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"""
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import ctypes, ctypes.wintypes as wt, sys, struct
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PROCESS_VM_READ = 0x10
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PROCESS_QUERY_INFORMATION = 0x400
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MEM_COMMIT = 0x1000
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MEM_PRIVATE = 0x20000
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PAGE_READWRITE = 0x4
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PAGE_EXECUTE_READWRITE = 0x40
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k = ctypes.windll.kernel32
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k.OpenProcess.argtypes = [wt.DWORD, wt.BOOL, wt.DWORD]; k.OpenProcess.restype = wt.HANDLE
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k.ReadProcessMemory.argtypes = [wt.HANDLE, wt.LPCVOID, wt.LPVOID, ctypes.c_size_t, ctypes.POINTER(ctypes.c_size_t)]
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k.ReadProcessMemory.restype = wt.BOOL
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class MBI(ctypes.Structure):
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_fields_ = [("BaseAddress", ctypes.c_void_p),
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("AllocationBase", ctypes.c_void_p),
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("AllocationProtect", wt.DWORD),
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("RegionSize", ctypes.c_size_t),
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("State", wt.DWORD),
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("Protect", wt.DWORD),
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("Type", wt.DWORD)]
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k.VirtualQueryEx.argtypes = [wt.HANDLE, ctypes.c_void_p, ctypes.POINTER(MBI), ctypes.c_size_t]
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k.VirtualQueryEx.restype = ctypes.c_size_t
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VTABLES = {
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'RTD3D_GR': 0x00801A18,
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'RTD3D_DBObj': 0x00801AA8,
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'RSD3D_GR': 0x00801A94,
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}
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S_RESOURCES_M_DATA = 0x008398C4
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S_RESOURCES_M_NUM = 0x008398CC
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def rd(h, va, n):
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buf = (ctypes.c_ubyte * n)(); sz = ctypes.c_size_t(0)
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if not k.ReadProcessMemory(h, va, buf, n, ctypes.byref(sz)): return None
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return bytes(buf[:sz.value])
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def rd_u32(h, va):
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b = rd(h, va, 4); return struct.unpack('<I', b)[0] if b else None
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pid = int(sys.argv[1])
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h = k.OpenProcess(PROCESS_VM_READ | PROCESS_QUERY_INFORMATION, False, pid)
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if not h: print(f"OpenProcess err={ctypes.get_last_error()}"); sys.exit(2)
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m_data = rd_u32(h, S_RESOURCES_M_DATA)
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m_num = rd_u32(h, S_RESOURCES_M_NUM)
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# In-s_Resources count via single read
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sres_rtd3d = 0
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sres_rsd3d = 0
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buf = rd(h, m_data, m_num*4)
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if buf:
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arr = struct.unpack(f"<{m_num}I", buf)
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for e in arr:
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if not e: continue
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vt = rd_u32(h, e)
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if vt == VTABLES['RTD3D_GR']: sres_rtd3d += 1
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elif vt == VTABLES['RSD3D_GR']: sres_rsd3d += 1
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counts = {name: 0 for name in VTABLES}
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addr = 0
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regions = 0
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mbi = MBI()
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while k.VirtualQueryEx(h, addr, ctypes.byref(mbi), ctypes.sizeof(mbi)):
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base = mbi.BaseAddress or 0
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size = mbi.RegionSize
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if (mbi.State == MEM_COMMIT and mbi.Type == MEM_PRIVATE and
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(mbi.Protect & 0xFF) in (PAGE_READWRITE, PAGE_EXECUTE_READWRITE)):
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regions += 1
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# Read in chunks of up to 4 MB
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off = 0
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while off < size:
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chunk = min(4*1024*1024, size - off)
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b = rd(h, base + off, chunk)
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if b:
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n_words = len(b) // 4
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arr = struct.unpack(f"<{n_words}I", b[:n_words*4])
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for v in arr:
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for name, vt in VTABLES.items():
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if v == vt:
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counts[name] += 1
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break
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off += chunk
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addr = base + size
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if addr >= 0x80000000: break
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if addr <= (mbi.BaseAddress or 0): break
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print(f"pid {pid}: regions={regions}")
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print(f" s_Resources: RTD3D={sres_rtd3d} RSD3D={sres_rsd3d}")
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for name, cnt in counts.items():
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print(f" vtable {name} ({VTABLES[name]:08x}) total in-process: {cnt}")
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