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>
76 lines
2.5 KiB
Python
76 lines
2.5 KiB
Python
"""count_one_pid.py <pid>
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Quick scan of a single PID for all leak-class vtable counts.
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"""
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import ctypes, ctypes.wintypes as wt, struct, sys
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VTABLES = {
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"uiitem": 0x007c0498,
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"palette": 0x007caa08,
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"cphysicsobj": 0x007c78ec,
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"renderSurf": 0x0079a67c,
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"renderSurfD3D": 0x00801a94,
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"renderTexD3D": 0x00801a18,
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"csurface": 0x007ca4dc,
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"imgtex": 0x007cab04,
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"cgfxobj": 0x007ca418,
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"d3dxmesh": 0x007ed3b0,
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}
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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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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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('PartitionId', wt.WORD),
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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 = 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.CloseHandle.argtypes = [wt.HANDLE]; k.CloseHandle.restype = wt.BOOL
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k.ReadProcessMemory.argtypes = [wt.HANDLE, wt.LPCVOID, wt.LPVOID, ctypes.c_size_t,
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ctypes.POINTER(ctypes.c_size_t)]
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k.ReadProcessMemory.restype = wt.BOOL
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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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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:
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print(f"OpenProcess({pid}) failed err={ctypes.get_last_error()}"); sys.exit(2)
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counts = {n: 0 for n in VTABLES}
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vt_to_name = {vt: name for name, vt in VTABLES.items()}
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mbi = MBI()
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addr = 0
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while k.VirtualQueryEx(h, addr, ctypes.byref(mbi), ctypes.sizeof(mbi)):
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pr = mbi.Protect & 0xff
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if (mbi.State == MEM_COMMIT and mbi.Type == MEM_PRIVATE and pr in (0x04, 0x40)):
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buf = (ctypes.c_ubyte * mbi.RegionSize)()
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sz = ctypes.c_size_t(0)
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if k.ReadProcessMemory(h, mbi.BaseAddress, buf, mbi.RegionSize, ctypes.byref(sz)):
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data = bytes(buf[:sz.value])
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end = (len(data) // 4) * 4
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for off in range(0, end, 4):
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v = struct.unpack_from("<I", data, off)[0]
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if v in vt_to_name:
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counts[vt_to_name[v]] += 1
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addr = (mbi.BaseAddress or 0) + mbi.RegionSize
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if addr >= 0x80000000: break
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print(f"PID {pid}")
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for n in VTABLES:
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print(f" {n:14s} = {counts[n]:6d}")
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k.CloseHandle(h)
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