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>
83 lines
2.9 KiB
Python
83 lines
2.9 KiB
Python
"""count_uiitem_live.py <pid>
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Count UIElement_UIItem instances in a live process by scanning RW heap
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for the primary vtable pointer 0x007c0498.
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"""
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import argparse, ctypes, ctypes.wintypes as wt, struct, sys, time
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UIITEM_VTABLE = 0x007c0498
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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.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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ap = argparse.ArgumentParser()
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ap.add_argument("pid", type=int)
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args = ap.parse_args()
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h = k.OpenProcess(PROCESS_VM_READ | PROCESS_QUERY_INFORMATION, False, args.pid)
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if not h:
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print(f"OpenProcess({args.pid}) failed err={ctypes.get_last_error()}"); sys.exit(2)
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# Count UIITEM_VTABLE pointers AND count cleared cells (item-GUID == 0 at +0x5fc)
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all_instances = []
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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
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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 == UIITEM_VTABLE:
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all_instances.append(mbi.BaseAddress + off)
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addr = (mbi.BaseAddress or 0) + mbi.RegionSize
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if addr >= 0x80000000:
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break
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# For each instance, read +0x5fc (item GUID)
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zero_guid = 0
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nonzero_guid = 0
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for inst_addr in all_instances:
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guid_addr = inst_addr + 0x5fc
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buf4 = (ctypes.c_ubyte * 4)()
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sz4 = ctypes.c_size_t(0)
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if k.ReadProcessMemory(h, guid_addr, buf4, 4, ctypes.byref(sz4)):
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guid = struct.unpack("<I", bytes(buf4))[0]
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if guid == 0:
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zero_guid += 1
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else:
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nonzero_guid += 1
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ts = time.strftime("%H:%M:%S")
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print(f"PID {args.pid} @ {ts}")
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print(f" UIElement_UIItem instances: {len(all_instances)}")
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print(f" cleared (item-GUID = 0): {zero_guid} <- leak signature")
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print(f" active (item-GUID != 0): {nonzero_guid}")
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