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[BugFix] Potential Fix to CUDA Illegal Memory Error #7142

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2 changes: 2 additions & 0 deletions vllm/attention/backends/flash_attn.py
Original file line number Diff line number Diff line change
Expand Up @@ -260,6 +260,8 @@ def _add_seq_group(
elif ((chunked_prefill_enabled or not is_prompt)
and block_tables is not None):
block_table = block_tables[seq_id][-curr_sliding_window_block:]
elif block_tables is not None:
block_table = block_tables[seq_id]
self.block_tables.append(block_table)

# Compute slot mapping.
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