diff --git a/qwen3_6_scripts/mamba_cache.py b/qwen3_6_scripts/mamba_cache.py
index 696bc493..3fcb739b 100644
--- a/qwen3_6_scripts/mamba_cache.py
+++ b/qwen3_6_scripts/mamba_cache.py
@@ -10,7 +10,7 @@ class MambaCacheManager:
     def __init__(self, dtype, num_mamba_layers, max_batch_size,
                  conv_state_shape, temporal_state_shape):
 
-        conv_state = torch.empty(size=(num_mamba_layers, max_batch_size) +
+        conv_state = torch.zeros(size=(num_mamba_layers, max_batch_size) +
                                  conv_state_shape,
                                  dtype=dtype,
                                  device="cuda")
@@ -209,10 +209,6 @@ class MambaCacheManager:
         for req_id in finished_seq_groups_req_ids:
             if req_id in self.mamba_cache_indices_mapping:
                 seq_mapping = self.mamba_cache_indices_mapping.pop(req_id)
-                # Zero out released cache slots so new requests start from
-                # clean state.  Without this, a new prefill reuses the stale
-                # temporal_state of the previous (unrelated) request, causing
-                # the GDN delta-rule to diverge → NaN → GPU memory corruption.
                 for cache_idx in seq_mapping.values():
                     for cache_t in self.mamba_cache:
                         cache_t[:, cache_idx].zero_()