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>
100 lines
4.2 KiB
Python
100 lines
4.2 KiB
Python
"""Count CPhysicsObj vs CPhysicsPart vs Position in given PIDs."""
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import ctypes, ctypes.wintypes as wt, struct, sys, subprocess
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from collections import Counter
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POSITION_VT = 0x00797910
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CPHYSICSOBJ_VT = 0x007c78e0 # EoR CPhysicsObj vtable
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# CPhysicsPart doesn't have its own vtable (no virtual methods); we
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# detect via its embedded Position pair at offsets 48 + 120.
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# The signature is: two Position vts 72 bytes apart, with 0x3f800000 at -4.
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PROCESS_VM_READ = 0x10
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PROCESS_QUERY_INFORMATION = 0x400
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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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def scan_pid(pid):
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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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return None
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positions = 0
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physobjs = 0
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parts_two_pos = 0 # length-2 Position arrays = CPhysicsPart signature
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parts_with_scale_1 = 0 # with 0x3f800000 in scale-z slot
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mbi = MBI(); 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 == 0x1000 and mbi.Type == 0x20000 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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pos_offs = set()
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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 == POSITION_VT:
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positions += 1
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pos_offs.add(off)
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elif v == CPHYSICSOBJ_VT:
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physobjs += 1
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# CPhysicsPart: a position at offset N AND another at N+72 AND off>=48
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for off in pos_offs:
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if (off + 72) in pos_offs and (off - 72) not in pos_offs:
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# this is the array head — is this CPhysicsPart?
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# check -4 byte = scale-z float
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if off >= 4:
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m4 = struct.unpack_from("<I", data, off - 4)[0]
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parts_two_pos += 1
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if m4 == 0x3f800000: # 1.0f
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parts_with_scale_1 += 1
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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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k.CloseHandle(h)
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return positions, physobjs, parts_two_pos, parts_with_scale_1
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# Gather PIDs + titles
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out = subprocess.check_output(
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["powershell.exe", "-NoProfile", "-Command",
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"Get-Process acclient -EA SilentlyContinue | "
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"ForEach-Object { \"$($_.Id)|$($_.MainWindowTitle)\" }"],
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text=True).strip()
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pids_with_titles = []
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for ln in out.splitlines():
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if "|" not in ln: continue
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a,b = ln.split("|",1)
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try:
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pids_with_titles.append((int(a), b))
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except ValueError: pass
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if len(sys.argv) > 1:
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want = set(int(p) for p in sys.argv[1:])
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pids_with_titles = [(p,t) for (p,t) in pids_with_titles if p in want]
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print(f"{'pid':>6} {'positions':>10} {'physobjs':>9} {'parts(2pos)':>12} {'parts(scale1)':>14} title")
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for pid, title in pids_with_titles:
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res = scan_pid(pid)
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if res is None:
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print(f"{pid:>6} NOACCESS")
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else:
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positions, physobjs, parts, parts_s1 = res
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print(f"{pid:>6} {positions:>10} {physobjs:>9} {parts:>12} {parts_s1:>14} {title}")
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