Fix overflow indexing in causal_conv1d kernel (#20938)

Signed-off-by: Thomas Parnell <tpa@zurich.ibm.com>
2025-07-14 23:43:07 +02:00
parent 149f2435a5
commit 86f3ac21ce
1 changed files with 2 additions and 1 deletions
--- a/vllm/model_executor/layers/mamba/ops/causal_conv1d.py
+++ b/vllm/model_executor/layers/mamba/ops/causal_conv1d.py
@@ -92,7 +92,8 @@ def _causal_conv1d_fwd_kernel(  # continuous batching

    if IS_CONTINUOUS_BATCHING:
        # cache_idx
-        conv_state_batch_coord = tl.load(conv_state_indices_ptr + idx_seq)
+        conv_state_batch_coord = tl.load(conv_state_indices_ptr + idx_seq).to(
+            tl.int64)
    else:
        # cache_idx
        conv_state_batch_coord = idx_seq