diff --git a/src/core/algorithms/interpolation/interpolator.py b/src/core/algorithms/interpolation/interpolator.py
index 6962065..eeba159 100644
--- a/src/core/algorithms/interpolation/interpolator.py
+++ b/src/core/algorithms/interpolation/interpolator.py
@@ -508,7 +508,8 @@ def interpolate_zero_pixels_batch(
                     cpu_count = multiprocessing.cpu_count() or 1
                 except (NotImplementedError, OSError):
                     cpu_count = 1
-                effective_workers = max(1, cpu_count)
+                # 为了内存安全，强制将物理进程数限制在最高 6 个
+                effective_workers = min(6, max(1, cpu_count))
 
             n_blocks_y = (height + block_size - 1) // block_size
             n_blocks_x = (width + block_size - 1) // block_size
@@ -531,7 +532,7 @@ def interpolate_zero_pixels_batch(
                     col_offset = x0 - ex0
                     mask_segment_ext = None
                     if mask_array is not None:
-                        mask_segment_ext = mask_array[ey0:ey1, ex0:ex1]
+                        mask_segment_ext = mask_array[ey0:ey1, ex0:ex1].copy()
                     tasks.append((
                         x0, y0, ey0, ex0, ey1, ex1,
                         row_offset, col_offset, inner_h, inner_w,