diff --git a/slime/rollout/sglang_rollout.py b/slime/rollout/sglang_rollout.py
index c7f86b98ca..828a228172 100644
--- a/slime/rollout/sglang_rollout.py
+++ b/slime/rollout/sglang_rollout.py
@@ -163,6 +163,15 @@ async def generate(args: Namespace, sample: Sample, sampling_params: dict[str, A
 
     prompt_ids = _prepare_prompt_ids(sample, state.tokenizer, state.processor)
 
+    # Clamp on retry: ABORTED samples carry response_length from prior attempts.
+    sampling_params = dict(sampling_params)
+    if args.rollout_max_response_len is not None:
+        remaining = args.rollout_max_response_len - sample.response_length
+        if remaining <= 0:
+            sample.status = Sample.Status.TRUNCATED
+            return sample
+        sampling_params["max_new_tokens"] = min(sampling_params["max_new_tokens"], remaining)
+
     assert (
         sampling_params["max_new_tokens"] >= 0
     ), f"max_new_tokens: {sampling_params['max_new_tokens']} should not be less than 0"